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adding Tcl interface to vpr

This commit is contained in:
Manadher Kharroubi 2022-06-07 09:15:20 -07:00
parent 70e2330f17
commit 73d9b40124
2377 changed files with 1421153 additions and 10 deletions
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2
CMakeLists.txt
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@ -151,7 +151,7 @@ endif()
# Set final flags
#
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARN_FLAGS} ${SANITIZE_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARN_FLAGS} ${SANITIZE_FLAGS} -fpic")
message(STATUS "CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")

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libs/EXTERNAL/tcl8.6.12/.github/workflows/linux-build.yml vendored Normal file
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name: Linux
on: [push]
jobs:
gcc:
runs-on: ubuntu-20.04
strategy:
matrix:
cfgopt:
- ""
- "--disable-shared"
- "--enable-symbols"
- "--enable-symbols=mem"
- "CFLAGS=-DTCL_UTF_MAX=4"
- "CFLAGS=-DTCL_UTF_MAX=6"
defaults:
run:
shell: bash
working-directory: unix
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Prepare
run: |
touch tclStubInit.c tclOOStubInit.c
working-directory: generic
- name: Configure ${{ matrix.cfgopt }}
run: |
mkdir "${HOME}/install dir"
./configure ${CFGOPT} "--prefix=$HOME/install dir" || (cat config.log && exit 1)
env:
CFGOPT: ${{ matrix.cfgopt }}
- name: Build
run: |
make all
- name: Build Test Harness
run: |
make tcltest
- name: Run Tests
run: |
make test
env:
ERROR_ON_FAILURES: 1
- name: Test-Drive Installation
run: |
make install
- name: Create Distribution Package
run: |
make dist
- name: Convert Documentation to HTML
run: |
make html-tcl

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@ -0,0 +1,58 @@
name: macOS
on: [push]
jobs:
xcode:
runs-on: macos-11
defaults:
run:
shell: bash
working-directory: macosx
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Prepare
run: |
touch tclStubInit.c tclOOStubInit.c
working-directory: generic
- name: Build
run: make all
- name: Run Tests
run: make test styles=develop
env:
ERROR_ON_FAILURES: 1
MAC_CI: 1
clang:
runs-on: macos-11
strategy:
matrix:
cfgopt:
- ""
- "--disable-shared"
- "--enable-symbols"
- "--enable-symbols=mem"
defaults:
run:
shell: bash
working-directory: unix
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Prepare
run: |
touch tclStubInit.c tclOOStubInit.c
mkdir "$HOME/install dir"
working-directory: generic
- name: Configure ${{ matrix.cfgopt }}
# Note that macOS is always a 64 bit platform
run: ./configure --enable-64bit --enable-dtrace --enable-framework ${CFGOPT} "--prefix=$HOME/install" || (cat config.log && exit 1)
env:
CFGOPT: ${{ matrix.cfgopt }}
- name: Build
run: |
make all tcltest
- name: Run Tests
run: |
make test
env:
ERROR_ON_FAILURES: 1
MAC_CI: 1

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libs/EXTERNAL/tcl8.6.12/.github/workflows/win-build.yml vendored Normal file
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@ -0,0 +1,80 @@
name: Windows
on: [push]
env:
ERROR_ON_FAILURES: 1
jobs:
msvc:
runs-on: windows-latest
defaults:
run:
shell: powershell
working-directory: win
strategy:
matrix:
cfgopt:
- ""
- "OPTS=static,msvcrt"
- "OPTS=symbols"
- "OPTS=memdbg"
# Using powershell means we need to explicitly stop on failure
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Init MSVC
uses: ilammy/msvc-dev-cmd@v1
- name: Build ${{ matrix.cfgopt }}
run: |
&nmake -f makefile.vc ${{ matrix.cfgopt }} all
if ($lastexitcode -ne 0) {
throw "nmake exit code: $lastexitcode"
}
- name: Build Test Harness ${{ matrix.cfgopt }}
run: |
&nmake -f makefile.vc ${{ matrix.cfgopt }} tcltest
if ($lastexitcode -ne 0) {
throw "nmake exit code: $lastexitcode"
}
- name: Run Tests ${{ matrix.cfgopt }}
run: |
&nmake -f makefile.vc ${{ matrix.cfgopt }} test
if ($lastexitcode -ne 0) {
throw "nmake exit code: $lastexitcode"
}
gcc:
runs-on: windows-latest
defaults:
run:
shell: msys2 {0}
working-directory: win
strategy:
matrix:
cfgopt:
- ""
- "--disable-shared"
- "--enable-symbols"
- "--enable-symbols=mem"
# Using powershell means we need to explicitly stop on failure
steps:
- name: Install MSYS2
uses: msys2/setup-msys2@v2
with:
msystem: MINGW64
install: git mingw-w64-x86_64-toolchain make
- name: Checkout
uses: actions/checkout@v2
- name: Prepare
run: |
touch tclStubInit.c tclOOStubInit.c
mkdir "${HOME}/install dir"
working-directory: generic
- name: Configure ${{ matrix.cfgopt }}
run: |
./configure ${CFGOPT} "--prefix=$HOME/install dir" || (cat config.log && exit 1)
env:
CFGOPT: --enable-64bit ${{ matrix.cfgopt }}
- name: Build
run: make all
- name: Build Test Harness
run: make tcltest
- name: Run Tests
run: make test

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@ -0,0 +1,385 @@
language: c
addons:
apt:
sources:
- ubuntu-toolchain-r-test
packages:
- binutils-mingw-w64-i686
- binutils-mingw-w64-x86-64
- gcc-mingw-w64
- gcc-mingw-w64-base
- gcc-mingw-w64-i686
- gcc-mingw-w64-x86-64
- gcc-multilib
jobs:
include:
# Testing on Linux GCC
- name: "Linux/GCC/Shared"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
- name: "Linux/GCC/Shared: UTF_MAX=4"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
- CFGOPT=CFLAGS=-DTCL_UTF_MAX=4
- name: "Linux/GCC/Shared: UTF_MAX=6"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
- CFGOPT=CFLAGS=-DTCL_UTF_MAX=6
- name: "Linux/GCC/Static"
os: linux
dist: focal
compiler: gcc
env:
- CFGOPT="--disable-shared"
- BUILD_DIR=unix
- name: "Linux/GCC/Debug"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
- CFGOPT="--enable-symbols"
- name: "Linux/GCC/Mem-Debug"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
- CFGOPT="--enable-symbols=mem"
# Newer/Older versions of GCC
- name: "Linux/GCC 10/Shared"
os: linux
dist: focal
compiler: gcc-10
addons:
apt:
packages:
- g++-10
env:
- BUILD_DIR=unix
- name: "Linux/GCC 5/Shared"
os: linux
dist: bionic
compiler: gcc-5
addons:
apt:
packages:
- g++-5
env:
- BUILD_DIR=unix
# Testing on Linux Clang
- name: "Linux/Clang/Shared"
os: linux
dist: focal
compiler: clang
env:
- BUILD_DIR=unix
- name: "Linux/Clang/Static"
os: linux
dist: focal
compiler: clang
env:
- CFGOPT="--disable-shared"
- BUILD_DIR=unix
- name: "Linux/Clang/Debug"
os: linux
dist: focal
compiler: clang
env:
- BUILD_DIR=unix
- CFGOPT="--enable-symbols"
- name: "Linux/Clang/Mem-Debug"
os: linux
dist: focal
compiler: clang
env:
- BUILD_DIR=unix
- CFGOPT="--enable-symbols=mem"
# Testing on Mac, various styles
- name: "macOS/Xcode 12/Shared"
os: osx
osx_image: xcode12.2
env:
- BUILD_DIR=macosx
install: []
script: &mactest
- make all
# The styles=develop avoids some weird problems on OSX
- make test styles=develop
- name: "macOS/Xcode 12/Shared/Unix-like"
os: osx
osx_image: xcode12.2
env:
- BUILD_DIR=unix
- CFGOPT="--enable-dtrace"
# Newer MacOS versions
- name: "macOS/Xcode 12/Universal Apps/Shared"
os: osx
osx_image: xcode12u
env:
- BUILD_DIR=macosx
install: []
script: *mactest
# Older MacOS versions
- name: "macOS/Xcode 11/Shared"
os: osx
osx_image: xcode11.7
env:
- BUILD_DIR=macosx
install: []
script: *mactest
- name: "macOS/Xcode 10/Shared"
os: osx
osx_image: xcode10.3
env:
- BUILD_DIR=macosx
install: []
script: *mactest
- name: "macOS/Xcode 9/Shared"
os: osx
osx_image: xcode9.4
env:
- BUILD_DIR=macosx
install: []
script: *mactest
- name: "macOS/Xcode 8/Shared"
os: osx
osx_image: xcode8.3
env:
- BUILD_DIR=macosx
install: []
script: *mactest
# Test with mingw-w64 cross-compile
# Doesn't run tests because wine is only an imperfect Windows emulation
- name: "Linux-cross-Windows/GCC/Shared/no test"
os: linux
dist: focal
compiler: x86_64-w64-mingw32-gcc
env:
- BUILD_DIR=win
- CFGOPT="--host=x86_64-w64-mingw32 --enable-64bit"
script: &crosstest
- make all tcltest
# Include a high visibility marker that tests are skipped outright
- >
echo "`tput setaf 3`SKIPPED TEST: CROSS COMPILING`tput sgr0`"
# Test with mingw-w64 (32 bit) cross-compile
# Doesn't run tests because wine is only an imperfect Windows emulation
- name: "Linux-cross-Windows-32/GCC/Shared/no test"
os: linux
dist: focal
compiler: i686-w64-mingw32-gcc
env:
- BUILD_DIR=win
- CFGOPT=--host=i686-w64-mingw32
script: *crosstest
# Test on Windows with MSVC native
- name: "Windows/MSVC/Shared"
os: windows
compiler: cl
env: &vcenv
- BUILD_DIR=win
- VCDIR="/C/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools/VC/Auxiliary/Build"
before_install: &vcpreinst
- touch generic/tclStubInit.c generic/tclOOStubInit.c
- PATH="$PATH:$VCDIR"
- cd ${BUILD_DIR}
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake '-f' makefile.vc test
- name: "Windows/MSVC/Shared: UTF_MAX=4"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=utfmax' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=utfmax' '-f' makefile.vc test
- name: "Windows/MSVC/Static"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=static,msvcrt' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=static,msvcrt' '-f' makefile.vc test
- name: "Windows/MSVC/StaticPackage"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=static,staticpkg,msvcrt' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=static,staticpkg,msvcrt' '-f' makefile.vc test
- name: "Windows/MSVC/Debug"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=symbols' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'OPTS=symbols' '-f' makefile.vc test
- name: "Windows/MSVC/Mem-Debug"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'STATS=memdbg' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x64 '&&' nmake 'STATS=memdbg' '-f' makefile.vc test
# Test on Windows with MSVC native (32-bit)
- name: "Windows/MSVC-x86/Shared"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x86 '&&' nmake '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x86 '&&' nmake '-f' makefile.vc test
- name: "Windows/MSVC-x86/Shared: UTF_MAX=4"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=utfmax' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=utfmax' '-f' makefile.vc test
- name: "Windows/MSVC-x86/Static"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=static,msvcrt' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=static,msvcrt' '-f' makefile.vc test
- name: "Windows/MSVC-x86/Debug"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=symbols' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'OPTS=symbols' '-f' makefile.vc test
- name: "Windows/MSVC-x86/Mem-Debug"
os: windows
compiler: cl
env: *vcenv
before_install: *vcpreinst
install: []
script:
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'STATS=memdbg' '-f' makefile.vc all tcltest
- cmd.exe //C vcvarsall.bat x86 '&&' nmake 'STATS=memdbg' '-f' makefile.vc test
# Test on Windows with GCC native
- name: "Windows/GCC/Shared"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-64bit"
before_install: &makepreinst
- touch generic/tclStubInit.c generic/tclOOStubInit.c
- choco install -y make
- cd ${BUILD_DIR}
- name: "Windows/GCC/Shared: UTF_MAX=4"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-64bit CFLAGS=-DTCL_UTF_MAX=4"
before_install: *makepreinst
- name: "Windows/GCC/Static"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-64bit --disable-shared"
before_install: *makepreinst
- name: "Windows/GCC/Debug"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-64bit --enable-symbols"
before_install: *makepreinst
- name: "Windows/GCC/Mem-Debug"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-64bit --enable-symbols=mem"
before_install: *makepreinst
# Test on Windows with GCC native (32-bit)
- name: "Windows/GCC-x86/Shared"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
before_install: *makepreinst
- name: "Windows/GCC-x86/Shared: UTF_MAX=4"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="CFLAGS=-DTCL_UTF_MAX=4"
before_install: *makepreinst
- name: "Windows/GCC-x86/Static"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--disable-shared"
before_install: *makepreinst
- name: "Windows/GCC-x86/Debug"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-symbols"
before_install: *makepreinst
- name: "Windows/GCC-x86/Mem-Debug"
os: windows
compiler: gcc
env:
- BUILD_DIR=win
- CFGOPT="--enable-symbols=mem"
before_install: *makepreinst
# "make dist" only
- name: "Linux: make dist"
os: linux
dist: focal
compiler: gcc
env:
- BUILD_DIR=unix
script:
- make dist
before_install:
- touch generic/tclStubInit.c generic/tclOOStubInit.c
- cd ${BUILD_DIR}
install:
- mkdir "$HOME/install dir"
- ./configure ${CFGOPT} "--prefix=$HOME/install dir" || (cat config.log && exit 1)
before_script:
- export ERROR_ON_FAILURES=1
script:
- make all tcltest || echo "Something wrong, maybe a hickup, let's try again"
- make test
- make install

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@ -0,0 +1,150 @@
# README: Tcl
This is the **Tcl 8.6.12** source distribution.
You can get any source release of Tcl from [our distribution
site](https://sourceforge.net/projects/tcl/files/Tcl/).
[![Build Status](https://github.com/tcltk/tcl/workflows/Linux/badge.svg?branch=core-8-6-branch)](https://github.com/tcltk/tcl/actions?query=workflow%3A%22Linux%22+branch%3Acore-8-6-branch)
[![Build Status](https://github.com/tcltk/tcl/workflows/Windows/badge.svg?branch=core-8-6-branch)](https://github.com/tcltk/tcl/actions?query=workflow%3A%22Windows%22+branch%3Acore-8-6-branch)
[![Build Status](https://github.com/tcltk/tcl/workflows/macOS/badge.svg?branch=core-8-6-branch)](https://github.com/tcltk/tcl/actions?query=workflow%3A%22macOS%22+branch%3Acore-8-6-branch)
## Contents
1. [Introduction](#intro)
2. [Documentation](#doc)
3. [Compiling and installing Tcl](#build)
4. [Development tools](#devtools)
5. [Tcl newsgroup](#complangtcl)
6. [The Tcler's Wiki](#wiki)
7. [Mailing lists](#email)
8. [Support and Training](#support)
9. [Tracking Development](#watch)
10. [Thank You](#thanks)
## <a id="intro">1.</a> Introduction
Tcl provides a powerful platform for creating integration applications that
tie together diverse applications, protocols, devices, and frameworks.
When paired with the Tk toolkit, Tcl provides the fastest and most powerful
way to create GUI applications that run on PCs, Unix, and Mac OS X.
Tcl can also be used for a variety of web-related tasks and for creating
powerful command languages for applications.
Tcl is maintained, enhanced, and distributed freely by the Tcl community.
Source code development and tracking of bug reports and feature requests
take place at [core.tcl-lang.org](https://core.tcl-lang.org/).
Tcl/Tk release and mailing list services are [hosted by
SourceForge](https://sourceforge.net/projects/tcl/)
with the Tcl Developer Xchange hosted at
[www.tcl-lang.org](https://www.tcl-lang.org).
Tcl is a freely available open-source package. You can do virtually
anything you like with it, such as modifying it, redistributing it,
and selling it either in whole or in part. See the file
`license.terms` for complete information.
## <a id="doc">2.</a> Documentation
Extensive documentation is available on our website.
The home page for this release, including new features, is
[here](https://www.tcl-lang.org/software/tcltk/8.6.html).
Detailed release notes can be found at the
[file distributions page](https://sourceforge.net/projects/tcl/files/Tcl/)
by clicking on the relevant version.
Information about Tcl itself can be found at the [Developer
Xchange](https://www.tcl-lang.org/about/).
There have been many Tcl books on the market. Many are mentioned in
[the Wiki](https://wiki.tcl-lang.org/_/ref?N=25206).
The complete set of reference manual entries for Tcl 8.6 is [online,
here](https://www.tcl-lang.org/man/tcl8.6/).
### <a id="doc.unix">2a.</a> Unix Documentation
The `doc` subdirectory in this release contains a complete set of
reference manual entries for Tcl. Files with extension "`.1`" are for
programs (for example, `tclsh.1`); files with extension "`.3`" are for C
library procedures; and files with extension "`.n`" describe Tcl
commands. The file "`doc/Tcl.n`" gives a quick summary of the Tcl
language syntax. To print any of the man pages on Unix, cd to the
"doc" directory and invoke your favorite variant of troff using the
normal -man macros, for example
groff -man -Tpdf Tcl.n >output.pdf
to print Tcl.n to PDF. If Tcl has been installed correctly and your "man" program
supports it, you should be able to access the Tcl manual entries using the
normal "man" mechanisms, such as
man Tcl
### <a id="doc.win">2b.</a> Windows Documentation
The "doc" subdirectory in this release contains a complete set of Windows
help files for Tcl. Once you install this Tcl release, a shortcut to the
Windows help Tcl documentation will appear in the "Start" menu:
Start | Programs | Tcl | Tcl Help
## <a id="build">3.</a> Compiling and installing Tcl
There are brief notes in the `unix/README`, `win/README`, and `macosx/README`
about compiling on these different platforms. There is additional information
about building Tcl from sources
[online](https://www.tcl-lang.org/doc/howto/compile.html).
## <a id="devtools">4.</a> Development tools
ActiveState produces a high-quality set of commercial quality development
tools that is available to accelerate your Tcl application development.
Tcl Dev Kit builds on the earlier TclPro toolset and provides a debugger,
static code checker, single-file wrapping utility, bytecode compiler, and
more. More information can be found at
https://www.activestate.com/products/tcl/
## <a id="complangtcl">5.</a> Tcl newsgroup
There is a USENET newsgroup, "`comp.lang.tcl`", intended for the exchange of
information about Tcl, Tk, and related applications. The newsgroup is a
great place to ask general information questions. For bug reports, please
see the "Support and bug fixes" section below.
## <a id="wiki">6.</a> Tcl'ers Wiki
There is a [wiki-based open community site](https://wiki.tcl-lang.org/)
covering all aspects of Tcl/Tk.
It is dedicated to the Tcl programming language and its extensions. A
wealth of useful information can be found there. It contains code
snippets, references to papers, books, and FAQs, as well as pointers to
development tools, extensions, and applications. You can also recommend
additional URLs by editing the wiki yourself.
## <a id="email">7.</a> Mailing lists
Several mailing lists are hosted at SourceForge to discuss development or use
issues (like Macintosh and Windows topics). For more information and to
subscribe, visit [here](https://sourceforge.net/projects/tcl/) and go to the
Mailing Lists page.
## <a id="support">8.</a> Support and Training
We are very interested in receiving bug reports, patches, and suggestions for
improvements. We prefer that you send this information to us as tickets
entered into [our issue tracker](https://core.tcl-lang.org/tcl/reportlist).
We will log and follow-up on each bug, although we cannot promise a
specific turn-around time. Enhancements may take longer and may not happen
at all unless there is widespread support for them (we're trying to
slow the rate at which Tcl/Tk turns into a kitchen sink). It's very
difficult to make incompatible changes to Tcl/Tk at this point, due to
the size of the installed base.
The Tcl community is too large for us to provide much individual support for
users. If you need help we suggest that you post questions to `comp.lang.tcl`
or ask a question on [Stack
Overflow](https://stackoverflow.com/questions/tagged/tcl). We read the
newsgroup and will attempt to answer esoteric questions for which no one else
is likely to know the answer. In addition, see the wiki for [links to other
organizations](https://wiki.tcl-lang.org/training) that offer Tcl/Tk training.
## <a id="watch">9.</a> Tracking Development
Tcl is developed in public. You can keep an eye on how Tcl is changing at
[core.tcl-lang.org](https://core.tcl-lang.org/).
## <a id="thanks">10.</a> Thank You
We'd like to express our thanks to the Tcl community for all the
helpful suggestions, bug reports, and patches we have received.
Tcl/Tk has improved vastly and will continue to do so with your help.

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6
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This directory contains various header and code files that are
used make Tcl compatible with various releases of UNIX and UNIX-like
systems. Typically, files from this directory are used to compile
Tcl when a system doesn't contain the corresponding files or when
they are known to be incorrect. When the whole world becomes POSIX-
compliant this directory should be unnecessary.

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/*
* dirent.h --
*
* This file is a replacement for <dirent.h> in systems that
* support the old BSD-style <sys/dir.h> with a "struct direct".
*
* Copyright (c) 1991 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _DIRENT
#define _DIRENT
#include <sys/dir.h>
#define dirent direct
#endif /* _DIRENT */

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/*
* dirent.h --
*
* Declarations of a library of directory-reading procedures
* in the POSIX style ("struct dirent").
*
* Copyright (c) 1991 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _DIRENT
#define _DIRENT
/*
* Dirent structure, which holds information about a single
* directory entry.
*/
#define MAXNAMLEN 255
#define DIRBLKSIZ 512
struct dirent {
long d_ino; /* Inode number of entry */
short d_reclen; /* Length of this record */
short d_namlen; /* Length of string in d_name */
char d_name[MAXNAMLEN + 1]; /* Name must be no longer than this */
};
/*
* State that keeps track of the reading of a directory (clients
* should never look inside this structure; the fields should
* only be accessed by the library procedures).
*/
typedef struct _dirdesc {
int dd_fd;
long dd_loc;
long dd_size;
char dd_buf[DIRBLKSIZ];
} DIR;
/*
* Procedures defined for reading directories:
*/
extern void closedir (DIR *dirp);
extern DIR * opendir (char *name);
extern struct dirent * readdir (DIR *dirp);
#endif /* _DIRENT */

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/*
* dlfcn.h --
*
* This file provides a replacement for the header file "dlfcn.h"
* on systems where dlfcn.h is missing. It's primary use is for
* AIX, where Tcl emulates the dl library.
*
* This file is subject to the following copyright notice, which is
* different from the notice used elsewhere in Tcl but rougly
* equivalent in meaning.
*
* Copyright (c) 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
* Not derived from licensed software.
*
* Permission is granted to freely use, copy, modify, and redistribute
* this software, provided that the author is not construed to be liable
* for any results of using the software, alterations are clearly marked
* as such, and this notice is not modified.
*/
/*
* This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
* 30159 Hannover, Germany
*/
#ifndef __dlfcn_h__
#define __dlfcn_h__
#ifdef __cplusplus
extern "C" {
#endif
/*
* Mode flags for the dlopen routine.
*/
#define RTLD_LAZY 1 /* lazy function call binding */
#define RTLD_NOW 2 /* immediate function call binding */
#define RTLD_GLOBAL 0x100 /* allow symbols to be global */
/*
* To be able to intialize, a library may provide a dl_info structure
* that contains functions to be called to initialize and terminate.
*/
struct dl_info {
void (*init) (void);
void (*fini) (void);
};
void *dlopen (const char *path, int mode);
void *dlsym (void *handle, const char *symbol);
char *dlerror (void);
int dlclose (void *handle);
#ifdef __cplusplus
}
#endif
#endif /* __dlfcn_h__ */

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/*
* Copyright (C) 2000-2003 Damien Miller. All rights reserved.
* Copyright (C) 1999 WIDE Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Pseudo-implementation of RFC2553 name / address resolution functions
*
* But these functions are not implemented correctly. The minimum subset
* is implemented for ssh use only. For example, this routine assumes
* that ai_family is AF_INET. Don't use it for another purpose.
*/
#include "tclInt.h"
TCL_DECLARE_MUTEX(netdbMutex)
#ifndef HAVE_GETNAMEINFO
#ifndef HAVE_STRLCPY
static size_t
strlcpy(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0) {
do {
if ((*d++ = *s++) == 0)
break;
} while (--n != 0);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
#endif
int fake_getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
size_t hostlen, char *serv, size_t servlen, int flags)
{
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
struct hostent *hp;
char tmpserv[16];
if (sa->sa_family != AF_UNSPEC && sa->sa_family != AF_INET)
return (EAI_FAMILY);
if (serv != NULL) {
snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
if (strlcpy(serv, tmpserv, servlen) >= servlen)
return (EAI_MEMORY);
}
if (host != NULL) {
if (flags & NI_NUMERICHOST) {
size_t len;
Tcl_MutexLock(&netdbMutex);
len = strlcpy(host, inet_ntoa(sin->sin_addr), hostlen);
Tcl_MutexUnlock(&netdbMutex);
if (len >= hostlen) {
return (EAI_MEMORY);
} else {
return (0);
}
} else {
int ret;
Tcl_MutexLock(&netdbMutex);
hp = gethostbyaddr((char *)&sin->sin_addr,
sizeof(struct in_addr), AF_INET);
if (hp == NULL) {
ret = EAI_NODATA;
} else if (strlcpy(host, hp->h_name, hostlen)
>= hostlen) {
ret = EAI_MEMORY;
} else {
ret = 0;
}
Tcl_MutexUnlock(&netdbMutex);
return ret;
}
}
return (0);
}
#endif /* !HAVE_GETNAMEINFO */
#ifndef HAVE_GAI_STRERROR
const char *
fake_gai_strerror(int err)
{
switch (err) {
case EAI_NODATA:
return ("no address associated with name");
case EAI_MEMORY:
return ("memory allocation failure.");
case EAI_NONAME:
return ("nodename nor servname provided, or not known");
case EAI_FAMILY:
return ("ai_family not supported");
default:
return ("unknown/invalid error.");
}
}
#endif /* !HAVE_GAI_STRERROR */
#ifndef HAVE_FREEADDRINFO
void
fake_freeaddrinfo(struct addrinfo *ai)
{
struct addrinfo *next;
for(; ai != NULL;) {
next = ai->ai_next;
free(ai);
ai = next;
}
}
#endif /* !HAVE_FREEADDRINFO */
#ifndef HAVE_GETADDRINFO
static struct
addrinfo *malloc_ai(int port, u_long addr, const struct addrinfo *hints)
{
struct addrinfo *ai;
ai = malloc(sizeof(*ai) + sizeof(struct sockaddr_in));
if (ai == NULL)
return (NULL);
memset(ai, '\0', sizeof(*ai) + sizeof(struct sockaddr_in));
ai->ai_addr = (struct sockaddr *)(ai + 1);
/* XXX -- ssh doesn't use sa_len */
ai->ai_addrlen = sizeof(struct sockaddr_in);
ai->ai_addr->sa_family = ai->ai_family = AF_INET;
((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port;
((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr;
/* XXX: the following is not generally correct, but does what we want */
if (hints->ai_socktype)
ai->ai_socktype = hints->ai_socktype;
else
ai->ai_socktype = SOCK_STREAM;
if (hints->ai_protocol)
ai->ai_protocol = hints->ai_protocol;
return (ai);
}
int
fake_getaddrinfo(const char *hostname, const char *servname,
const struct addrinfo *hints, struct addrinfo **res)
{
struct hostent *hp;
struct servent *sp;
struct in_addr in;
int i;
long int port;
u_long addr;
port = 0;
if (hints && hints->ai_family != AF_UNSPEC &&
hints->ai_family != AF_INET)
return (EAI_FAMILY);
if (servname != NULL) {
char *cp;
port = strtol(servname, &cp, 10);
if (port > 0 && port <= 65535 && *cp == '\0')
port = htons((unsigned short)port);
else if ((sp = getservbyname(servname, NULL)) != NULL)
port = sp->s_port;
else
port = 0;
}
if (hints && hints->ai_flags & AI_PASSIVE) {
addr = htonl(0x00000000);
if (hostname && inet_aton(hostname, &in) != 0)
addr = in.s_addr;
*res = malloc_ai(port, addr, hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
if (!hostname) {
*res = malloc_ai(port, htonl(0x7F000001), hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
if (inet_aton(hostname, &in)) {
*res = malloc_ai(port, in.s_addr, hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
/* Don't try DNS if AI_NUMERICHOST is set */
if (hints && hints->ai_flags & AI_NUMERICHOST)
return (EAI_NONAME);
Tcl_MutexLock(&netdbMutex);
hp = gethostbyname(hostname);
if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
struct addrinfo *cur, *prev;
cur = prev = *res = NULL;
for (i = 0; hp->h_addr_list[i]; i++) {
struct in_addr *in = (struct in_addr *)hp->h_addr_list[i];
cur = malloc_ai(port, in->s_addr, hints);
if (cur == NULL) {
if (*res != NULL)
freeaddrinfo(*res);
Tcl_MutexUnlock(&netdbMutex);
return (EAI_MEMORY);
}
if (prev)
prev->ai_next = cur;
else
*res = cur;
prev = cur;
}
Tcl_MutexUnlock(&netdbMutex);
return (0);
}
Tcl_MutexUnlock(&netdbMutex);
return (EAI_NODATA);
}
#endif /* !HAVE_GETADDRINFO */

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/*
* Copyright (C) 2000-2003 Damien Miller. All rights reserved.
* Copyright (C) 1999 WIDE Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Pseudo-implementation of RFC2553 name / address resolution functions
*
* But these functions are not implemented correctly. The minimum subset
* is implemented for ssh use only. For example, this routine assumes
* that ai_family is AF_INET. Don't use it for another purpose.
*/
#ifndef _FAKE_RFC2553_H
#define _FAKE_RFC2553_H
/*
* First, socket and INET6 related definitions
*/
#ifndef HAVE_STRUCT_SOCKADDR_STORAGE
# define _SS_MAXSIZE 128 /* Implementation specific max size */
# define _SS_PADSIZE (_SS_MAXSIZE - sizeof (struct sockaddr))
struct sockaddr_storage {
struct sockaddr ss_sa;
char __ss_pad2[_SS_PADSIZE];
};
# define ss_family ss_sa.sa_family
#endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
#ifndef IN6_IS_ADDR_LOOPBACK
# define IN6_IS_ADDR_LOOPBACK(a) \
(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
((uint32_t *)(a))[2] == 0 && ((uint32_t *)(a))[3] == htonl(1))
#endif /* !IN6_IS_ADDR_LOOPBACK */
#ifndef HAVE_STRUCT_IN6_ADDR
struct in6_addr {
uint8_t s6_addr[16];
};
#endif /* !HAVE_STRUCT_IN6_ADDR */
#ifndef HAVE_STRUCT_SOCKADDR_IN6
struct sockaddr_in6 {
unsigned short sin6_family;
uint16_t sin6_port;
uint32_t sin6_flowinfo;
struct in6_addr sin6_addr;
uint32_t sin6_scope_id;
};
#endif /* !HAVE_STRUCT_SOCKADDR_IN6 */
#ifndef AF_INET6
/* Define it to something that should never appear */
#define AF_INET6 AF_MAX
#endif
/*
* Next, RFC2553 name / address resolution API
*/
#ifndef NI_NUMERICHOST
# define NI_NUMERICHOST (1)
#endif
#ifndef NI_NAMEREQD
# define NI_NAMEREQD (1<<1)
#endif
#ifndef NI_NUMERICSERV
# define NI_NUMERICSERV (1<<2)
#endif
#ifndef AI_PASSIVE
# define AI_PASSIVE (1)
#endif
#ifndef AI_CANONNAME
# define AI_CANONNAME (1<<1)
#endif
#ifndef AI_NUMERICHOST
# define AI_NUMERICHOST (1<<2)
#endif
#ifndef NI_MAXSERV
# define NI_MAXSERV 32
#endif /* !NI_MAXSERV */
#ifndef NI_MAXHOST
# define NI_MAXHOST 1025
#endif /* !NI_MAXHOST */
#ifndef EAI_NODATA
# define EAI_NODATA (INT_MAX - 1)
#endif
#ifndef EAI_MEMORY
# define EAI_MEMORY (INT_MAX - 2)
#endif
#ifndef EAI_NONAME
# define EAI_NONAME (INT_MAX - 3)
#endif
#ifndef EAI_SYSTEM
# define EAI_SYSTEM (INT_MAX - 4)
#endif
#ifndef EAI_FAMILY
# define EAI_FAMILY (INT_MAX - 5)
#endif
#ifndef EAI_SERVICE
# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
#endif
#ifndef HAVE_STRUCT_ADDRINFO
struct addrinfo {
int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
int ai_family; /* PF_xxx */
int ai_socktype; /* SOCK_xxx */
int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
size_t ai_addrlen; /* length of ai_addr */
char *ai_canonname; /* canonical name for hostname */
struct sockaddr *ai_addr; /* binary address */
struct addrinfo *ai_next; /* next structure in linked list */
};
#endif /* !HAVE_STRUCT_ADDRINFO */
#ifndef HAVE_GETADDRINFO
#ifdef getaddrinfo
# undef getaddrinfo
#endif
#define getaddrinfo(a,b,c,d) (fake_getaddrinfo(a,b,c,d))
int getaddrinfo(const char *, const char *,
const struct addrinfo *, struct addrinfo **);
#endif /* !HAVE_GETADDRINFO */
#ifndef HAVE_GAI_STRERROR
#define gai_strerror(a) (fake_gai_strerror(a))
const char *gai_strerror(int);
#endif /* !HAVE_GAI_STRERROR */
#ifndef HAVE_FREEADDRINFO
#define freeaddrinfo(a) (fake_freeaddrinfo(a))
void freeaddrinfo(struct addrinfo *);
#endif /* !HAVE_FREEADDRINFO */
#ifndef HAVE_GETNAMEINFO
#define getnameinfo(a,b,c,d,e,f,g) (fake_getnameinfo(a,b,c,d,e,f,g))
int getnameinfo(const struct sockaddr *, size_t, char *, size_t,
char *, size_t, int);
#endif /* !HAVE_GETNAMEINFO */
#endif /* !_FAKE_RFC2553_H */

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/*
* float.h --
*
* This is a dummy header file to #include in Tcl when there
* is no float.h in /usr/include. Right now this file is empty:
* Tcl contains #ifdefs to deal with the lack of definitions;
* all it needs is for the #include statement to work.
*
* Copyright (c) 1993 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/

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/*
* gettod.c --
*
* This file provides the gettimeofday function on systems
* that only have the System V ftime function.
*
* Copyright (c) 1995 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclPort.h"
#include <sys/timeb.h>
#undef timezone
int
gettimeofday(
struct timeval *tp,
struct timezone *tz)
{
struct timeb t;
(void)tz;
ftime(&t);
tp->tv_sec = t.time;
tp->tv_usec = t.millitm * 1000;
return 0;
}

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This software is copyrighted by the Regents of the University of
California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
Corporation and other parties. The following terms apply to all files
associated with the software unless explicitly disclaimed in
individual files.
The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
that existing copyright notices are retained in all copies and that this
notice is included verbatim in any distributions. No written agreement,
license, or royalty fee is required for any of the authorized uses.
Modifications to this software may be copyrighted by their authors
and need not follow the licensing terms described here, provided that
the new terms are clearly indicated on the first page of each file where
they apply.
IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE
IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
MODIFICATIONS.
GOVERNMENT USE: If you are acquiring this software on behalf of the
U.S. government, the Government shall have only "Restricted Rights"
in the software and related documentation as defined in the Federal
Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
are acquiring the software on behalf of the Department of Defense, the
software shall be classified as "Commercial Computer Software" and the
Government shall have only "Restricted Rights" as defined in Clause
252.227-7014 (b) (3) of DFARs. Notwithstanding the foregoing, the
authors grant the U.S. Government and others acting in its behalf
permission to use and distribute the software in accordance with the
terms specified in this license.

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/*
* memcmp.c --
*
* Source code for the "memcmp" library routine.
*
* Copyright (c) 1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclPort.h"
/*
* Here is the prototype just in case it is not included in tclPort.h.
*/
int memcmp(const void *s1, const void *s2, size_t n);
/*
*----------------------------------------------------------------------
*
* memcmp --
*
* Compares two bytes sequences.
*
* Results:
* Compares its arguments, looking at the first n bytes (each interpreted
* as an unsigned char), and returns an integer less than, equal to, or
* greater than 0, according as s1 is less than, equal to, or greater
* than s2 when taken to be unsigned 8 bit numbers.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
memcmp(
const void *s1, /* First string. */
const void *s2, /* Second string. */
size_t n) /* Length to compare. */
{
const unsigned char *ptr1 = (const unsigned char *) s1;
const unsigned char *ptr2 = (const unsigned char *) s2;
for ( ; n-- ; ptr1++, ptr2++) {
unsigned char u1 = *ptr1, u2 = *ptr2;
if (u1 != u2) {
return (u1-u2);
}
}
return 0;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/

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/*
* mkstemp.c --
*
* Source code for the "mkstemp" library routine.
*
* Copyright (c) 2009 Donal K. Fellows
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
/*
*----------------------------------------------------------------------
*
* mkstemp --
*
* Create an open temporary file from a template.
*
* Results:
* A file descriptor, or -1 (with errno set) in the case of an error.
*
* Side effects:
* The template is updated to contain the real filename.
*
*----------------------------------------------------------------------
*/
int
mkstemp(
char *template) /* Template for filename. */
{
static const char alphanumerics[] =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
char *a, *b;
int fd, count, alphanumericsLen = strlen(alphanumerics); /* == 62 */
a = template + strlen(template);
while (a > template && *(a-1) == 'X') {
a--;
}
if (a == template) {
errno = ENOENT;
return -1;
}
/*
* We'll only try up to 10 times; after that, we're suffering from enemy
* action and should let the caller know.
*/
count = 10;
do {
/*
* Replace the X's in the original template with random alphanumeric
* digits.
*/
for (b=a ; *b ; b++) {
float r = rand() / ((float) RAND_MAX);
*b = alphanumerics[(int)(r * alphanumericsLen)];
}
/*
* Template is now realized; try to open (with correct options).
*/
fd = open(template, O_RDWR|O_CREAT|O_EXCL, 0600);
} while (fd == -1 && errno == EEXIST && --count > 0);
return fd;
}

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/*
* opendir.c --
*
* This file provides dirent-style directory-reading procedures for V7
* Unix systems that don't have such procedures. The origin of this code
* is unclear, but it seems to have come originally from Larry Wall.
*/
#include "tclInt.h"
#undef DIRSIZ
#define DIRSIZ(dp) \
((sizeof(struct dirent) - (MAXNAMLEN+1)) + (((dp)->d_namlen+1 + 3) &~ 3))
/*
* open a directory.
*/
DIR *
opendir(
char *name)
{
DIR *dirp;
int fd;
const char *myname;
myname = ((*name == '\0') ? "." : name);
if ((fd = open(myname, 0, 0)) == -1) {
return NULL;
}
dirp = (DIR *) ckalloc(sizeof(DIR));
if (dirp == NULL) {
/* unreachable? */
close(fd);
return NULL;
}
dirp->dd_fd = fd;
dirp->dd_loc = 0;
return dirp;
}
/*
* read an old style directory entry and present it as a new one
*/
#ifndef pyr
#define ODIRSIZ 14
struct olddirect {
ino_t od_ino;
char od_name[ODIRSIZ];
};
#else /* a Pyramid in the ATT universe */
#define ODIRSIZ 248
struct olddirect {
long od_ino;
short od_fill1, od_fill2;
char od_name[ODIRSIZ];
};
#endif
/*
* get next entry in a directory.
*/
struct dirent *
readdir(
DIR *dirp)
{
struct olddirect *dp;
static struct dirent dir;
for (;;) {
if (dirp->dd_loc == 0) {
dirp->dd_size = read(dirp->dd_fd, dirp->dd_buf, DIRBLKSIZ);
if (dirp->dd_size <= 0) {
return NULL;
}
}
if (dirp->dd_loc >= dirp->dd_size) {
dirp->dd_loc = 0;
continue;
}
dp = (struct olddirect *)(dirp->dd_buf + dirp->dd_loc);
dirp->dd_loc += sizeof(struct olddirect);
if (dp->od_ino == 0) {
continue;
}
dir.d_ino = dp->od_ino;
strncpy(dir.d_name, dp->od_name, ODIRSIZ);
dir.d_name[ODIRSIZ] = '\0'; /* insure null termination */
dir.d_namlen = strlen(dir.d_name);
dir.d_reclen = DIRSIZ(&dir);
return &dir;
}
}
/*
* close a directory.
*/
void
closedir(
DIR *dirp)
{
close(dirp->dd_fd);
dirp->dd_fd = -1;
dirp->dd_loc = 0;
ckfree((char *)dirp);
}

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/*
* stdlib.h --
*
* Declares facilities exported by the "stdlib" portion of the C library.
* This file isn't complete in the ANSI-C sense; it only declares things
* that are needed by Tcl. This file is needed even on many systems with
* their own stdlib.h (e.g. SunOS) because not all stdlib.h files declare
* all the procedures needed here (such as strtod).
*
* Copyright (c) 1991 The Regents of the University of California.
* Copyright (c) 1994-1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _STDLIB
#define _STDLIB
extern void abort(void);
extern double atof(const char *string);
extern int atoi(const char *string);
extern long atol(const char *string);
extern char * calloc(unsigned int numElements, unsigned int size);
extern void exit(int status);
extern int free(char *blockPtr);
extern char * getenv(const char *name);
extern char * malloc(unsigned int numBytes);
extern void qsort(void *base, int n, int size, int (*compar)(
const void *element1, const void *element2));
extern char * realloc(char *ptr, unsigned int numBytes);
extern long strtol(const char *string, char **endPtr, int base);
extern unsigned long strtoul(const char *string, char **endPtr, int base);
#endif /* _STDLIB */

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/*
* string.h --
*
* Declarations of ANSI C library procedures for string handling.
*
* Copyright (c) 1991-1993 The Regents of the University of California.
* Copyright (c) 1994-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _STRING
#define _STRING
/*
* The following #include is needed to define size_t. (This used to include
* sys/stdtypes.h but that doesn't exist on older versions of SunOS, e.g.
* 4.0.2, so I'm trying sys/types.h now.... hopefully it exists everywhere)
*/
#include <sys/types.h>
#ifdef __APPLE__
extern void * memchr(const void *s, int c, size_t n);
#else
extern char * memchr(const void *s, int c, size_t n);
#endif
extern int memcmp(const void *s1, const void *s2, size_t n);
extern char * memcpy(void *t, const void *f, size_t n);
#ifdef NO_MEMMOVE
#define memmove(d,s,n) (bcopy((s), (d), (n)))
#else
extern char * memmove(void *t, const void *f, size_t n);
#endif
extern char * memset(void *s, int c, size_t n);
extern int strcasecmp(const char *s1, const char *s2);
extern char * strcat(char *dst, const char *src);
extern char * strchr(const char *string, int c);
extern int strcmp(const char *s1, const char *s2);
extern char * strcpy(char *dst, const char *src);
extern size_t strcspn(const char *string, const char *chars);
extern char * strdup(const char *string);
extern char * strerror(int error);
extern size_t strlen(const char *string);
extern int strncasecmp(const char *s1, const char *s2, size_t n);
extern char * strncat(char *dst, const char *src, size_t numChars);
extern int strncmp(const char *s1, const char *s2, size_t nChars);
extern char * strncpy(char *dst, const char *src, size_t numChars);
extern char * strpbrk(const char *string, const char *chars);
extern char * strrchr(const char *string, int c);
extern size_t strspn(const char *string, const char *chars);
extern char * strstr(const char *string, const char *substring);
extern char * strtok(char *s, const char *delim);
#endif /* _STRING */

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/*
* strncasecmp.c --
*
* Source code for the "strncasecmp" library routine.
*
* Copyright (c) 1988-1993 The Regents of the University of California.
* Copyright (c) 1995-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclPort.h"
/*
* This array is designed for mapping upper and lower case letter together for
* a case independent comparison. The mappings are based upon ASCII character
* sequences.
*/
static const unsigned char charmap[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xe1, 0xe2, 0xe3, 0xe4, 0xc5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
};
/*
* Here are the prototypes just in case they are not included in tclPort.h.
*/
int strncasecmp(const char *s1, const char *s2, size_t n);
int strcasecmp(const char *s1, const char *s2);
/*
*----------------------------------------------------------------------
*
* strcasecmp --
*
* Compares two strings, ignoring case differences.
*
* Results:
* Compares two null-terminated strings s1 and s2, returning -1, 0, or 1
* if s1 is lexicographically less than, equal to, or greater than s2.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
strcasecmp(
const char *s1, /* First string. */
const char *s2) /* Second string. */
{
unsigned char u1, u2;
for ( ; ; s1++, s2++) {
u1 = (unsigned char) *s1;
u2 = (unsigned char) *s2;
if ((u1 == '\0') || (charmap[u1] != charmap[u2])) {
break;
}
}
return charmap[u1] - charmap[u2];
}
/*
*----------------------------------------------------------------------
*
* strncasecmp --
*
* Compares two strings, ignoring case differences.
*
* Results:
* Compares up to length chars of s1 and s2, returning -1, 0, or 1 if s1
* is lexicographically less than, equal to, or greater than s2 over
* those characters.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
strncasecmp(
const char *s1, /* First string. */
const char *s2, /* Second string. */
size_t length) /* Maximum number of characters to compare
* (stop earlier if the end of either string
* is reached). */
{
unsigned char u1, u2;
for (; length != 0; length--, s1++, s2++) {
u1 = (unsigned char) *s1;
u2 = (unsigned char) *s2;
if (charmap[u1] != charmap[u2]) {
return charmap[u1] - charmap[u2];
}
if (u1 == '\0') {
return 0;
}
}
return 0;
}

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/*
* strstr.c --
*
* Source code for the "strstr" library routine.
*
* Copyright (c) 1988-1993 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tcl.h"
#ifndef NULL
#define NULL 0
#endif
/*
*----------------------------------------------------------------------
*
* strstr --
*
* Locate the first instance of a substring in a string.
*
* Results:
* If string contains substring, the return value is the location of the
* first matching instance of substring in string. If string doesn't
* contain substring, the return value is 0. Matching is done on an exact
* character-for-character basis with no wildcards or special characters.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
strstr(
const char *string, /* String to search. */
const char *substring) /* Substring to try to find in string. */
{
const char *a, *b;
/*
* First scan quickly through the two strings looking for a
* single-character match. When it's found, then compare the rest of the
* substring.
*/
b = substring;
if (*b == 0) {
return (char *)string;
}
for ( ; *string != 0; string += 1) {
if (*string != *b) {
continue;
}
a = string;
while (1) {
if (*b == 0) {
return (char *)string;
}
if (*a++ != *b++) {
break;
}
}
b = substring;
}
return NULL;
}

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/*
* strtol.c --
*
* Source code for the "strtol" library procedure.
*
* Copyright (c) 1988 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclInt.h"
/*
*----------------------------------------------------------------------
*
* strtol --
*
* Convert an ASCII string into an integer.
*
* Results:
* The return value is the integer equivalent of string. If endPtr is
* non-NULL, then *endPtr is filled in with the character after the last
* one that was part of the integer. If string doesn't contain a valid
* integer value, then zero is returned and *endPtr is set to string.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
long int
strtol(
const char *string, /* String of ASCII digits, possibly preceded
* by white space. For bases greater than 10,
* either lower- or upper-case digits may be
* used. */
char **endPtr, /* Where to store address of terminating
* character, or NULL. */
int base) /* Base for conversion. Must be less than 37.
* If 0, then the base is chosen from the
* leading characters of string: "0x" means
* hex, "0" means octal, anything else means
* decimal. */
{
const char *p;
long result;
/*
* Skip any leading blanks.
*/
p = string;
while (isspace(UCHAR(*p))) {
p += 1;
}
/*
* Check for a sign.
*/
if (*p == '-') {
p += 1;
result = -(strtoul(p, endPtr, base));
} else {
if (*p == '+') {
p += 1;
}
result = strtoul(p, endPtr, base);
}
if ((result == 0) && (endPtr != 0) && (*endPtr == p)) {
*endPtr = (char *) string;
}
return result;
}

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/*
* strtoul.c --
*
* Source code for the "strtoul" library procedure.
*
* Copyright (c) 1988 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclInt.h"
/*
* The table below is used to convert from ASCII digits to a numerical
* equivalent. It maps from '0' through 'z' to integers (100 for non-digit
* characters).
*/
static const char cvtIn[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, /* '0' - '9' */
100, 100, 100, 100, 100, 100, 100, /* punctuation */
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 'A' - 'Z' */
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35,
100, 100, 100, 100, 100, 100, /* punctuation */
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, /* 'a' - 'z' */
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35};
/*
*----------------------------------------------------------------------
*
* strtoul --
*
* Convert an ASCII string into an integer.
*
* Results:
* The return value is the integer equivalent of string. If endPtr is
* non-NULL, then *endPtr is filled in with the character after the last
* one that was part of the integer. If string doesn't contain a valid
* integer value, then zero is returned and *endPtr is set to string.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
unsigned long int
strtoul(
const char *string, /* String of ASCII digits, possibly preceded
* by white space. For bases greater than 10,
* either lower- or upper-case digits may be
* used. */
char **endPtr, /* Where to store address of terminating
* character, or NULL. */
int base) /* Base for conversion. Must be less than 37.
* If 0, then the base is chosen from the
* leading characters of string: "0x" means
* hex, "0" means octal, anything else means
* decimal. */
{
const char *p;
unsigned long int result = 0;
unsigned digit;
int anyDigits = 0;
int negative=0;
int overflow=0;
/*
* Skip any leading blanks.
*/
p = string;
while (isspace(UCHAR(*p))) {
p += 1;
}
if (*p == '-') {
negative = 1;
p += 1;
} else {
if (*p == '+') {
p += 1;
}
}
/*
* If no base was provided, pick one from the leading characters of the
* string.
*/
if (base == 0) {
if (*p == '0') {
p += 1;
if ((*p == 'x') || (*p == 'X')) {
p += 1;
base = 16;
} else {
/*
* Must set anyDigits here, otherwise "0" produces a "no
* digits" error.
*/
anyDigits = 1;
base = 8;
}
} else {
base = 10;
}
} else if (base == 16) {
/*
* Skip a leading "0x" from hex numbers.
*/
if ((p[0] == '0') && ((p[1] == 'x') || (p[1] == 'X'))) {
p += 2;
}
}
/*
* Sorry this code is so messy, but speed seems important. Do different
* things for base 8, 10, 16, and other.
*/
if (base == 8) {
unsigned long maxres = ULONG_MAX >> 3;
for ( ; ; p += 1) {
digit = *p - '0';
if (digit > 7) {
break;
}
if (result > maxres) { overflow = 1; }
result = (result << 3);
if (digit > (ULONG_MAX - result)) { overflow = 1; }
result += digit;
anyDigits = 1;
}
} else if (base == 10) {
unsigned long maxres = ULONG_MAX / 10;
for ( ; ; p += 1) {
digit = *p - '0';
if (digit > 9) {
break;
}
if (result > maxres) { overflow = 1; }
result *= 10;
if (digit > (ULONG_MAX - result)) { overflow = 1; }
result += digit;
anyDigits = 1;
}
} else if (base == 16) {
unsigned long maxres = ULONG_MAX >> 4;
for ( ; ; p += 1) {
digit = *p - '0';
if (digit > ('z' - '0')) {
break;
}
digit = cvtIn[digit];
if (digit > 15) {
break;
}
if (result > maxres) { overflow = 1; }
result = (result << 4);
if (digit > (ULONG_MAX - result)) { overflow = 1; }
result += digit;
anyDigits = 1;
}
} else if (base >= 2 && base <= 36) {
unsigned long maxres = ULONG_MAX / base;
for ( ; ; p += 1) {
digit = *p - '0';
if (digit > ('z' - '0')) {
break;
}
digit = cvtIn[digit];
if (digit >= ( (unsigned) base )) {
break;
}
if (result > maxres) { overflow = 1; }
result *= base;
if (digit > (ULONG_MAX - result)) { overflow = 1; }
result += digit;
anyDigits = 1;
}
}
/*
* See if there were any digits at all.
*/
if (!anyDigits) {
p = string;
}
if (endPtr != 0) {
/* unsafe, but required by the strtoul prototype */
*endPtr = (char *) p;
}
if (overflow) {
errno = ERANGE;
return ULONG_MAX;
}
if (negative) {
return -result;
}
return result;
}

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/*
* unistd.h --
*
* Macros, constants and prototypes for Posix conformance.
*
* Copyright 1989 Regents of the University of California Permission to use,
* copy, modify, and distribute this software and its documentation for any
* purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies. The University of California makes
* no representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*/
#ifndef _UNISTD
#define _UNISTD
#include <sys/types.h>
#ifndef NULL
#define NULL 0
#endif
/*
* Strict POSIX stuff goes here. Extensions go down below, in the ifndef
* _POSIX_SOURCE section.
*/
extern void _exit(int status);
extern int access(const char *path, int mode);
extern int chdir(const char *path);
extern int chown(const char *path, uid_t owner, gid_t group);
extern int close(int fd);
extern int dup(int oldfd);
extern int dup2(int oldfd, int newfd);
extern int execl(const char *path, ...);
extern int execle(const char *path, ...);
extern int execlp(const char *file, ...);
extern int execv(const char *path, char **argv);
extern int execve(const char *path, char **argv, char **envp);
extern int execvpw(const char *file, char **argv);
extern pid_t fork(void);
extern char * getcwd(char *buf, size_t size);
extern gid_t getegid(void);
extern uid_t geteuid(void);
extern gid_t getgid(void);
extern int getgroups(int bufSize, int *buffer);
extern pid_t getpid(void);
extern uid_t getuid(void);
extern int isatty(int fd);
extern long lseek(int fd, long offset, int whence);
extern int pipe(int *fildes);
extern int read(int fd, char *buf, size_t size);
extern int setgid(gid_t group);
extern int setuid(uid_t user);
extern unsigned sleep(unsigned seconds);
extern char * ttyname(int fd);
extern int unlink(const char *path);
extern int write(int fd, const char *buf, size_t size);
#ifndef _POSIX_SOURCE
extern char * crypt(const char *, const char *);
extern int fchown(int fd, uid_t owner, gid_t group);
extern int flock(int fd, int operation);
extern int ftruncate(int fd, unsigned long length);
extern int ioctl(int fd, int request, ...);
extern int readlink(const char *path, char *buf, int bufsize);
extern int setegid(gid_t group);
extern int seteuidw(uid_t user);
extern int setreuid(int ruid, int euid);
extern int symlink(const char *, const char *);
extern int ttyslot(void);
extern int truncate(const char *path, unsigned long length);
extern int vfork(void);
#endif /* _POSIX_SOURCE */
#endif /* _UNISTD */

168
libs/EXTERNAL/tcl8.6.12/compat/waitpid.c Normal file
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/*
* waitpid.c --
*
* This procedure emulates the POSIX waitpid kernel call on BSD systems
* that don't have waitpid but do have wait3. This code is based on a
* prototype version written by Mark Diekhans and Karl Lehenbauer.
*
* Copyright (c) 1993 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "tclPort.h"
#ifndef pid_t
#define pid_t int
#endif
/*
* A linked list of the following structures is used to keep track of
* processes for which we received notification from the kernel, but the
* application hasn't waited for them yet (this can happen because wait may
* not return the process we really want). We save the information here until
* the application finally does wait for the process.
*/
typedef struct WaitInfo {
pid_t pid; /* Pid of process that exited. */
WAIT_STATUS_TYPE status; /* Status returned when child exited or
* suspended. */
struct WaitInfo *nextPtr; /* Next in list of exited processes. */
} WaitInfo;
static WaitInfo *deadList = NULL;
/* First in list of all dead processes. */
/*
*----------------------------------------------------------------------
*
* waitpid --
*
* This procedure emulates the functionality of the POSIX waitpid kernel
* call, using the BSD wait3 kernel call. Note: it doesn't emulate
* absolutely all of the waitpid functionality, in that it doesn't
* support pid's of 0 or < -1.
*
* Results:
* -1 is returned if there is an error in the wait kernel call. Otherwise
* the pid of an exited or suspended process is returned and *statusPtr
* is set to the status value of the process.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
#ifdef waitpid
# undef waitpid
#endif
pid_t
waitpid(
pid_t pid, /* The pid to wait on. Must be -1 or greater
* than zero. */
int *statusPtr, /* Where to store wait status for the
* process. */
int options) /* OR'ed combination of WNOHANG and
* WUNTRACED. */
{
WaitInfo *waitPtr, *prevPtr;
pid_t result;
WAIT_STATUS_TYPE status;
if ((pid < -1) || (pid == 0)) {
errno = EINVAL;
return -1;
}
/*
* See if there's a suitable process that has already stopped or exited.
* If so, remove it from the list of exited processes and return its
* information.
*/
for (waitPtr = deadList, prevPtr = NULL; waitPtr != NULL;
prevPtr = waitPtr, waitPtr = waitPtr->nextPtr) {
if ((pid != waitPtr->pid) && (pid != -1)) {
continue;
}
if (!(options & WUNTRACED) && (WIFSTOPPED(waitPtr->status))) {
continue;
}
result = waitPtr->pid;
*statusPtr = *((int *) &waitPtr->status);
if (prevPtr == NULL) {
deadList = waitPtr->nextPtr;
} else {
prevPtr->nextPtr = waitPtr->nextPtr;
}
ckfree((char *) waitPtr);
return result;
}
/*
* Wait for any process to stop or exit. If it's an acceptable one then
* return it to the caller; otherwise store information about it in the
* list of exited processes and try again. On systems that have only wait
* but not wait3, there are several situations we can't handle, but we do
* the best we can (e.g. can still handle some combinations of options by
* invoking wait instead of wait3).
*/
while (1) {
#if NO_WAIT3
if (options & WNOHANG) {
return 0;
}
if (options != 0) {
errno = EINVAL;
return -1;
}
result = wait(&status);
#else
result = wait3(&status, options, 0);
#endif
if ((result == -1) && (errno == EINTR)) {
continue;
}
if (result <= 0) {
return result;
}
if ((pid != result) && (pid != -1)) {
goto saveInfo;
}
if (!(options & WUNTRACED) && (WIFSTOPPED(status))) {
goto saveInfo;
}
*statusPtr = *((int *) &status);
return result;
/*
* Can't return this info to caller. Save it in the list of stopped or
* exited processes. Tricky point: first check for an existing entry
* for the process and overwrite it if it exists (e.g. a previously
* stopped process might now be dead).
*/
saveInfo:
for (waitPtr = deadList; waitPtr != NULL; waitPtr = waitPtr->nextPtr) {
if (waitPtr->pid == result) {
waitPtr->status = status;
goto waitAgain;
}
}
waitPtr = (WaitInfo *) ckalloc(sizeof(WaitInfo));
waitPtr->pid = result;
waitPtr->status = status;
waitPtr->nextPtr = deadList;
deadList = waitPtr;
waitAgain:
continue;
}
}

249
libs/EXTERNAL/tcl8.6.12/compat/zlib/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 2.4.4)
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
project(zlib C)
set(VERSION "1.2.11")
option(ASM686 "Enable building i686 assembly implementation")
option(AMD64 "Enable building amd64 assembly implementation")
set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
include(CheckTypeSize)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckCSourceCompiles)
enable_testing()
check_include_file(sys/types.h HAVE_SYS_TYPES_H)
check_include_file(stdint.h HAVE_STDINT_H)
check_include_file(stddef.h HAVE_STDDEF_H)
#
# Check to see if we have large file support
#
set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
# We add these other definitions here because CheckTypeSize.cmake
# in CMake 2.4.x does not automatically do so and we want
# compatibility with CMake 2.4.x.
if(HAVE_SYS_TYPES_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
endif()
if(HAVE_STDINT_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
endif()
if(HAVE_STDDEF_H)
list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
endif()
check_type_size(off64_t OFF64_T)
if(HAVE_OFF64_T)
add_definitions(-D_LARGEFILE64_SOURCE=1)
endif()
set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
#
# Check for fseeko
#
check_function_exists(fseeko HAVE_FSEEKO)
if(NOT HAVE_FSEEKO)
add_definitions(-DNO_FSEEKO)
endif()
#
# Check for unistd.h
#
check_include_file(unistd.h Z_HAVE_UNISTD_H)
if(MSVC)
set(CMAKE_DEBUG_POSTFIX "d")
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
include_directories(${CMAKE_CURRENT_SOURCE_DIR})
endif()
if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
# If we're doing an out of source build and the user has a zconf.h
# in their source tree...
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
message(STATUS "Renaming")
message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
message(STATUS "to 'zconf.h.included' because this file is included with zlib")
message(STATUS "but CMake generates it automatically in the build directory.")
file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
endif()
endif()
set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
${ZLIB_PC} @ONLY)
configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
#============================================================================
# zlib
#============================================================================
set(ZLIB_PUBLIC_HDRS
${CMAKE_CURRENT_BINARY_DIR}/zconf.h
zlib.h
)
set(ZLIB_PRIVATE_HDRS
crc32.h
deflate.h
gzguts.h
inffast.h
inffixed.h
inflate.h
inftrees.h
trees.h
zutil.h
)
set(ZLIB_SRCS
adler32.c
compress.c
crc32.c
deflate.c
gzclose.c
gzlib.c
gzread.c
gzwrite.c
inflate.c
infback.c
inftrees.c
inffast.c
trees.c
uncompr.c
zutil.c
)
if(NOT MINGW)
set(ZLIB_DLL_SRCS
win32/zlib1.rc # If present will override custom build rule below.
)
endif()
if(CMAKE_COMPILER_IS_GNUCC)
if(ASM686)
set(ZLIB_ASMS contrib/asm686/match.S)
elseif (AMD64)
set(ZLIB_ASMS contrib/amd64/amd64-match.S)
endif ()
if(ZLIB_ASMS)
add_definitions(-DASMV)
set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE)
endif()
endif()
if(MSVC)
if(ASM686)
ENABLE_LANGUAGE(ASM_MASM)
set(ZLIB_ASMS
contrib/masmx86/inffas32.asm
contrib/masmx86/match686.asm
)
elseif (AMD64)
ENABLE_LANGUAGE(ASM_MASM)
set(ZLIB_ASMS
contrib/masmx64/gvmat64.asm
contrib/masmx64/inffasx64.asm
)
endif()
if(ZLIB_ASMS)
add_definitions(-DASMV -DASMINF)
endif()
endif()
# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
"\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
if(MINGW)
# This gets us DLL resource information when compiling on MinGW.
if(NOT CMAKE_RC_COMPILER)
set(CMAKE_RC_COMPILER windres.exe)
endif()
add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
COMMAND ${CMAKE_RC_COMPILER}
-D GCC_WINDRES
-I ${CMAKE_CURRENT_SOURCE_DIR}
-I ${CMAKE_CURRENT_BINARY_DIR}
-o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
-i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
endif(MINGW)
add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
set_target_properties(zlib PROPERTIES SOVERSION 1)
if(NOT CYGWIN)
# This property causes shared libraries on Linux to have the full version
# encoded into their final filename. We disable this on Cygwin because
# it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
# seems to be the default.
#
# This has no effect with MSVC, on that platform the version info for
# the DLL comes from the resource file win32/zlib1.rc
set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
endif()
if(UNIX)
# On unix-like platforms the library is almost always called libz
set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
if(NOT APPLE)
set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
endif()
elseif(BUILD_SHARED_LIBS AND WIN32)
# Creates zlib1.dll when building shared library version
set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
endif()
if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
install(TARGETS zlib zlibstatic
RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
endif()
if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
endif()
if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
endif()
#============================================================================
# Example binaries
#============================================================================
add_executable(example test/example.c)
target_link_libraries(example zlib)
add_test(example example)
add_executable(minigzip test/minigzip.c)
target_link_libraries(minigzip zlib)
if(HAVE_OFF64_T)
add_executable(example64 test/example.c)
target_link_libraries(example64 zlib)
set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
add_test(example64 example64)
add_executable(minigzip64 test/minigzip.c)
target_link_libraries(minigzip64 zlib)
set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
endif()

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libs/EXTERNAL/tcl8.6.12/compat/zlib/ChangeLog Normal file
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368
libs/EXTERNAL/tcl8.6.12/compat/zlib/FAQ Normal file
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Frequently Asked Questions about zlib
If your question is not there, please check the zlib home page
http://zlib.net/ which may have more recent information.
The lastest zlib FAQ is at http://zlib.net/zlib_faq.html
1. Is zlib Y2K-compliant?
Yes. zlib doesn't handle dates.
2. Where can I get a Windows DLL version?
The zlib sources can be compiled without change to produce a DLL. See the
file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the
precompiled DLL are found in the zlib web site at http://zlib.net/ .
3. Where can I get a Visual Basic interface to zlib?
See
* http://marknelson.us/1997/01/01/zlib-engine/
* win32/DLL_FAQ.txt in the zlib distribution
4. compress() returns Z_BUF_ERROR.
Make sure that before the call of compress(), the length of the compressed
buffer is equal to the available size of the compressed buffer and not
zero. For Visual Basic, check that this parameter is passed by reference
("as any"), not by value ("as long").
5. deflate() or inflate() returns Z_BUF_ERROR.
Before making the call, make sure that avail_in and avail_out are not zero.
When setting the parameter flush equal to Z_FINISH, also make sure that
avail_out is big enough to allow processing all pending input. Note that a
Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be
made with more input or output space. A Z_BUF_ERROR may in fact be
unavoidable depending on how the functions are used, since it is not
possible to tell whether or not there is more output pending when
strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a
heavily annotated example.
6. Where's the zlib documentation (man pages, etc.)?
It's in zlib.h . Examples of zlib usage are in the files test/example.c
and test/minigzip.c, with more in examples/ .
7. Why don't you use GNU autoconf or libtool or ...?
Because we would like to keep zlib as a very small and simple package.
zlib is rather portable and doesn't need much configuration.
8. I found a bug in zlib.
Most of the time, such problems are due to an incorrect usage of zlib.
Please try to reproduce the problem with a small program and send the
corresponding source to us at zlib@gzip.org . Do not send multi-megabyte
data files without prior agreement.
9. Why do I get "undefined reference to gzputc"?
If "make test" produces something like
example.o(.text+0x154): undefined reference to `gzputc'
check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
/usr/X11R6/lib. Remove any old versions, then do "make install".
10. I need a Delphi interface to zlib.
See the contrib/delphi directory in the zlib distribution.
11. Can zlib handle .zip archives?
Not by itself, no. See the directory contrib/minizip in the zlib
distribution.
12. Can zlib handle .Z files?
No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
the code of uncompress on your own.
13. How can I make a Unix shared library?
By default a shared (and a static) library is built for Unix. So:
make distclean
./configure
make
14. How do I install a shared zlib library on Unix?
After the above, then:
make install
However, many flavors of Unix come with a shared zlib already installed.
Before going to the trouble of compiling a shared version of zlib and
trying to install it, you may want to check if it's already there! If you
can #include <zlib.h>, it's there. The -lz option will probably link to
it. You can check the version at the top of zlib.h or with the
ZLIB_VERSION symbol defined in zlib.h .
15. I have a question about OttoPDF.
We are not the authors of OttoPDF. The real author is on the OttoPDF web
site: Joel Hainley, jhainley@myndkryme.com.
16. Can zlib decode Flate data in an Adobe PDF file?
Yes. See http://www.pdflib.com/ . To modify PDF forms, see
http://sourceforge.net/projects/acroformtool/ .
17. Why am I getting this "register_frame_info not found" error on Solaris?
After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
generates an error such as:
ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
symbol __register_frame_info: referenced symbol not found
The symbol __register_frame_info is not part of zlib, it is generated by
the C compiler (cc or gcc). You must recompile applications using zlib
which have this problem. This problem is specific to Solaris. See
http://www.sunfreeware.com for Solaris versions of zlib and applications
using zlib.
18. Why does gzip give an error on a file I make with compress/deflate?
The compress and deflate functions produce data in the zlib format, which
is different and incompatible with the gzip format. The gz* functions in
zlib on the other hand use the gzip format. Both the zlib and gzip formats
use the same compressed data format internally, but have different headers
and trailers around the compressed data.
19. Ok, so why are there two different formats?
The gzip format was designed to retain the directory information about a
single file, such as the name and last modification date. The zlib format
on the other hand was designed for in-memory and communication channel
applications, and has a much more compact header and trailer and uses a
faster integrity check than gzip.
20. Well that's nice, but how do I make a gzip file in memory?
You can request that deflate write the gzip format instead of the zlib
format using deflateInit2(). You can also request that inflate decode the
gzip format using inflateInit2(). Read zlib.h for more details.
21. Is zlib thread-safe?
Yes. However any library routines that zlib uses and any application-
provided memory allocation routines must also be thread-safe. zlib's gz*
functions use stdio library routines, and most of zlib's functions use the
library memory allocation routines by default. zlib's *Init* functions
allow for the application to provide custom memory allocation routines.
Of course, you should only operate on any given zlib or gzip stream from a
single thread at a time.
22. Can I use zlib in my commercial application?
Yes. Please read the license in zlib.h.
23. Is zlib under the GNU license?
No. Please read the license in zlib.h.
24. The license says that altered source versions must be "plainly marked". So
what exactly do I need to do to meet that requirement?
You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
particular, the final version number needs to be changed to "f", and an
identification string should be appended to ZLIB_VERSION. Version numbers
x.x.x.f are reserved for modifications to zlib by others than the zlib
maintainers. For example, if the version of the base zlib you are altering
is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
update the version strings in deflate.c and inftrees.c.
For altered source distributions, you should also note the origin and
nature of the changes in zlib.h, as well as in ChangeLog and README, along
with the dates of the alterations. The origin should include at least your
name (or your company's name), and an email address to contact for help or
issues with the library.
Note that distributing a compiled zlib library along with zlib.h and
zconf.h is also a source distribution, and so you should change
ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
in zlib.h as you would for a full source distribution.
25. Will zlib work on a big-endian or little-endian architecture, and can I
exchange compressed data between them?
Yes and yes.
26. Will zlib work on a 64-bit machine?
Yes. It has been tested on 64-bit machines, and has no dependence on any
data types being limited to 32-bits in length. If you have any
difficulties, please provide a complete problem report to zlib@gzip.org
27. Will zlib decompress data from the PKWare Data Compression Library?
No. The PKWare DCL uses a completely different compressed data format than
does PKZIP and zlib. However, you can look in zlib's contrib/blast
directory for a possible solution to your problem.
28. Can I access data randomly in a compressed stream?
No, not without some preparation. If when compressing you periodically use
Z_FULL_FLUSH, carefully write all the pending data at those points, and
keep an index of those locations, then you can start decompression at those
points. You have to be careful to not use Z_FULL_FLUSH too often, since it
can significantly degrade compression. Alternatively, you can scan a
deflate stream once to generate an index, and then use that index for
random access. See examples/zran.c .
29. Does zlib work on MVS, OS/390, CICS, etc.?
It has in the past, but we have not heard of any recent evidence. There
were working ports of zlib 1.1.4 to MVS, but those links no longer work.
If you know of recent, successful applications of zlib on these operating
systems, please let us know. Thanks.
30. Is there some simpler, easier to read version of inflate I can look at to
understand the deflate format?
First off, you should read RFC 1951. Second, yes. Look in zlib's
contrib/puff directory.
31. Does zlib infringe on any patents?
As far as we know, no. In fact, that was originally the whole point behind
zlib. Look here for some more information:
http://www.gzip.org/#faq11
32. Can zlib work with greater than 4 GB of data?
Yes. inflate() and deflate() will process any amount of data correctly.
Each call of inflate() or deflate() is limited to input and output chunks
of the maximum value that can be stored in the compiler's "unsigned int"
type, but there is no limit to the number of chunks. Note however that the
strm.total_in and strm_total_out counters may be limited to 4 GB. These
counters are provided as a convenience and are not used internally by
inflate() or deflate(). The application can easily set up its own counters
updated after each call of inflate() or deflate() to count beyond 4 GB.
compress() and uncompress() may be limited to 4 GB, since they operate in a
single call. gzseek() and gztell() may be limited to 4 GB depending on how
zlib is compiled. See the zlibCompileFlags() function in zlib.h.
The word "may" appears several times above since there is a 4 GB limit only
if the compiler's "long" type is 32 bits. If the compiler's "long" type is
64 bits, then the limit is 16 exabytes.
33. Does zlib have any security vulnerabilities?
The only one that we are aware of is potentially in gzprintf(). If zlib is
compiled to use sprintf() or vsprintf(), then there is no protection
against a buffer overflow of an 8K string space (or other value as set by
gzbuffer()), other than the caller of gzprintf() assuring that the output
will not exceed 8K. On the other hand, if zlib is compiled to use
snprintf() or vsnprintf(), which should normally be the case, then there is
no vulnerability. The ./configure script will display warnings if an
insecure variation of sprintf() will be used by gzprintf(). Also the
zlibCompileFlags() function will return information on what variant of
sprintf() is used by gzprintf().
If you don't have snprintf() or vsnprintf() and would like one, you can
find a portable implementation here:
http://www.ijs.si/software/snprintf/
Note that you should be using the most recent version of zlib. Versions
1.1.3 and before were subject to a double-free vulnerability, and versions
1.2.1 and 1.2.2 were subject to an access exception when decompressing
invalid compressed data.
34. Is there a Java version of zlib?
Probably what you want is to use zlib in Java. zlib is already included
as part of the Java SDK in the java.util.zip package. If you really want
a version of zlib written in the Java language, look on the zlib home
page for links: http://zlib.net/ .
35. I get this or that compiler or source-code scanner warning when I crank it
up to maximally-pedantic. Can't you guys write proper code?
Many years ago, we gave up attempting to avoid warnings on every compiler
in the universe. It just got to be a waste of time, and some compilers
were downright silly as well as contradicted each other. So now, we simply
make sure that the code always works.
36. Valgrind (or some similar memory access checker) says that deflate is
performing a conditional jump that depends on an uninitialized value.
Isn't that a bug?
No. That is intentional for performance reasons, and the output of deflate
is not affected. This only started showing up recently since zlib 1.2.x
uses malloc() by default for allocations, whereas earlier versions used
calloc(), which zeros out the allocated memory. Even though the code was
correct, versions 1.2.4 and later was changed to not stimulate these
checkers.
37. Will zlib read the (insert any ancient or arcane format here) compressed
data format?
Probably not. Look in the comp.compression FAQ for pointers to various
formats and associated software.
38. How can I encrypt/decrypt zip files with zlib?
zlib doesn't support encryption. The original PKZIP encryption is very
weak and can be broken with freely available programs. To get strong
encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib
compression. For PKZIP compatible "encryption", look at
http://www.info-zip.org/
39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
"gzip" is the gzip format, and "deflate" is the zlib format. They should
probably have called the second one "zlib" instead to avoid confusion with
the raw deflate compressed data format. While the HTTP 1.1 RFC 2616
correctly points to the zlib specification in RFC 1950 for the "deflate"
transfer encoding, there have been reports of servers and browsers that
incorrectly produce or expect raw deflate data per the deflate
specification in RFC 1951, most notably Microsoft. So even though the
"deflate" transfer encoding using the zlib format would be the more
efficient approach (and in fact exactly what the zlib format was designed
for), using the "gzip" transfer encoding is probably more reliable due to
an unfortunate choice of name on the part of the HTTP 1.1 authors.
Bottom line: use the gzip format for HTTP 1.1 encoding.
40. Does zlib support the new "Deflate64" format introduced by PKWare?
No. PKWare has apparently decided to keep that format proprietary, since
they have not documented it as they have previous compression formats. In
any case, the compression improvements are so modest compared to other more
modern approaches, that it's not worth the effort to implement.
41. I'm having a problem with the zip functions in zlib, can you help?
There are no zip functions in zlib. You are probably using minizip by
Giles Vollant, which is found in the contrib directory of zlib. It is not
part of zlib. In fact none of the stuff in contrib is part of zlib. The
files in there are not supported by the zlib authors. You need to contact
the authors of the respective contribution for help.
42. The match.asm code in contrib is under the GNU General Public License.
Since it's part of zlib, doesn't that mean that all of zlib falls under the
GNU GPL?
No. The files in contrib are not part of zlib. They were contributed by
other authors and are provided as a convenience to the user within the zlib
distribution. Each item in contrib has its own license.
43. Is zlib subject to export controls? What is its ECCN?
zlib is not subject to export controls, and so is classified as EAR99.
44. Can you please sign these lengthy legal documents and fax them back to us
so that we can use your software in our product?
No. Go away. Shoo.

68
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@ -0,0 +1,68 @@
CMakeLists.txt cmake build file
ChangeLog history of changes
FAQ Frequently Asked Questions about zlib
INDEX this file
Makefile dummy Makefile that tells you to ./configure
Makefile.in template for Unix Makefile
README guess what
configure configure script for Unix
make_vms.com makefile for VMS
test/example.c zlib usages examples for build testing
test/minigzip.c minimal gzip-like functionality for build testing
test/infcover.c inf*.c code coverage for build coverage testing
treebuild.xml XML description of source file dependencies
zconf.h.cmakein zconf.h template for cmake
zconf.h.in zconf.h template for configure
zlib.3 Man page for zlib
zlib.3.pdf Man page in PDF format
zlib.map Linux symbol information
zlib.pc.in Template for pkg-config descriptor
zlib.pc.cmakein zlib.pc template for cmake
zlib2ansi perl script to convert source files for C++ compilation
amiga/ makefiles for Amiga SAS C
as400/ makefiles for AS/400
doc/ documentation for formats and algorithms
msdos/ makefiles for MSDOS
nintendods/ makefile for Nintendo DS
old/ makefiles for various architectures and zlib documentation
files that have not yet been updated for zlib 1.2.x
qnx/ makefiles for QNX
watcom/ makefiles for OpenWatcom
win32/ makefiles for Windows
zlib public header files (required for library use):
zconf.h
zlib.h
private source files used to build the zlib library:
adler32.c
compress.c
crc32.c
crc32.h
deflate.c
deflate.h
gzclose.c
gzguts.h
gzlib.c
gzread.c
gzwrite.c
infback.c
inffast.c
inffast.h
inffixed.h
inflate.c
inflate.h
inftrees.c
inftrees.h
trees.c
trees.h
uncompr.c
zutil.c
zutil.h
source files for sample programs
See examples/README.examples
unsupported contributions by third parties
See contrib/README.contrib

5
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all:
-@echo "Please use ./configure first. Thank you."
distclean:
make -f Makefile.in distclean

410
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# Makefile for zlib
# Copyright (C) 1995-2017 Jean-loup Gailly, Mark Adler
# For conditions of distribution and use, see copyright notice in zlib.h
# To compile and test, type:
# ./configure; make test
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static
# To use the asm code, type:
# cp contrib/asm?86/match.S ./match.S
# make LOC=-DASMV OBJA=match.o
# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
# make install
# To install in $HOME instead of /usr/local, use:
# make install prefix=$HOME
CC=cc
CFLAGS=-O
#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
#CFLAGS=-g -DZLIB_DEBUG
#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
# -Wstrict-prototypes -Wmissing-prototypes
SFLAGS=-O
LDFLAGS=
TEST_LDFLAGS=-L. libz.a
LDSHARED=$(CC)
CPP=$(CC) -E
STATICLIB=libz.a
SHAREDLIB=libz.so
SHAREDLIBV=libz.so.1.2.11
SHAREDLIBM=libz.so.1
LIBS=$(STATICLIB) $(SHAREDLIBV)
AR=ar
ARFLAGS=rc
RANLIB=ranlib
LDCONFIG=ldconfig
LDSHAREDLIBC=-lc
TAR=tar
SHELL=/bin/sh
EXE=
prefix = /usr/local
exec_prefix = ${prefix}
libdir = ${exec_prefix}/lib
sharedlibdir = ${libdir}
includedir = ${prefix}/include
mandir = ${prefix}/share/man
man3dir = ${mandir}/man3
pkgconfigdir = ${libdir}/pkgconfig
SRCDIR=
ZINC=
ZINCOUT=-I.
OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
OBJC = $(OBJZ) $(OBJG)
PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)
# to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
OBJA =
PIC_OBJA =
OBJS = $(OBJC) $(OBJA)
PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA)
all: static shared
static: example$(EXE) minigzip$(EXE)
shared: examplesh$(EXE) minigzipsh$(EXE)
all64: example64$(EXE) minigzip64$(EXE)
check: test
test: all teststatic testshared
teststatic: static
@TMPST=tmpst_$$; \
if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
echo ' *** zlib test OK ***'; \
else \
echo ' *** zlib test FAILED ***'; false; \
fi; \
rm -f $$TMPST
testshared: shared
@LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
TMPSH=tmpsh_$$; \
if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
echo ' *** zlib shared test OK ***'; \
else \
echo ' *** zlib shared test FAILED ***'; false; \
fi; \
rm -f $$TMPSH
test64: all64
@TMP64=tmp64_$$; \
if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
echo ' *** zlib 64-bit test OK ***'; \
else \
echo ' *** zlib 64-bit test FAILED ***'; false; \
fi; \
rm -f $$TMP64
infcover.o: $(SRCDIR)test/infcover.c $(SRCDIR)zlib.h zconf.h
$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/infcover.c
infcover: infcover.o libz.a
$(CC) $(CFLAGS) -o $@ infcover.o libz.a
cover: infcover
rm -f *.gcda
./infcover
gcov inf*.c
libz.a: $(OBJS)
$(AR) $(ARFLAGS) $@ $(OBJS)
-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
match.o: match.S
$(CPP) match.S > _match.s
$(CC) -c _match.s
mv _match.o match.o
rm -f _match.s
match.lo: match.S
$(CPP) match.S > _match.s
$(CC) -c -fPIC _match.s
mv _match.o match.lo
rm -f _match.s
example.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/example.c
minigzip.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/minigzip.c
example64.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/example.c
minigzip64.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/minigzip.c
adler32.o: $(SRCDIR)adler32.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)adler32.c
crc32.o: $(SRCDIR)crc32.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)crc32.c
deflate.o: $(SRCDIR)deflate.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)deflate.c
infback.o: $(SRCDIR)infback.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)infback.c
inffast.o: $(SRCDIR)inffast.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inffast.c
inflate.o: $(SRCDIR)inflate.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inflate.c
inftrees.o: $(SRCDIR)inftrees.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inftrees.c
trees.o: $(SRCDIR)trees.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)trees.c
zutil.o: $(SRCDIR)zutil.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)zutil.c
compress.o: $(SRCDIR)compress.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)compress.c
uncompr.o: $(SRCDIR)uncompr.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)uncompr.c
gzclose.o: $(SRCDIR)gzclose.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzclose.c
gzlib.o: $(SRCDIR)gzlib.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzlib.c
gzread.o: $(SRCDIR)gzread.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzread.c
gzwrite.o: $(SRCDIR)gzwrite.c
$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzwrite.c
adler32.lo: $(SRCDIR)adler32.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/adler32.o $(SRCDIR)adler32.c
-@mv objs/adler32.o $@
crc32.lo: $(SRCDIR)crc32.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/crc32.o $(SRCDIR)crc32.c
-@mv objs/crc32.o $@
deflate.lo: $(SRCDIR)deflate.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/deflate.o $(SRCDIR)deflate.c
-@mv objs/deflate.o $@
infback.lo: $(SRCDIR)infback.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/infback.o $(SRCDIR)infback.c
-@mv objs/infback.o $@
inffast.lo: $(SRCDIR)inffast.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inffast.o $(SRCDIR)inffast.c
-@mv objs/inffast.o $@
inflate.lo: $(SRCDIR)inflate.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inflate.o $(SRCDIR)inflate.c
-@mv objs/inflate.o $@
inftrees.lo: $(SRCDIR)inftrees.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inftrees.o $(SRCDIR)inftrees.c
-@mv objs/inftrees.o $@
trees.lo: $(SRCDIR)trees.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/trees.o $(SRCDIR)trees.c
-@mv objs/trees.o $@
zutil.lo: $(SRCDIR)zutil.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/zutil.o $(SRCDIR)zutil.c
-@mv objs/zutil.o $@
compress.lo: $(SRCDIR)compress.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/compress.o $(SRCDIR)compress.c
-@mv objs/compress.o $@
uncompr.lo: $(SRCDIR)uncompr.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/uncompr.o $(SRCDIR)uncompr.c
-@mv objs/uncompr.o $@
gzclose.lo: $(SRCDIR)gzclose.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzclose.o $(SRCDIR)gzclose.c
-@mv objs/gzclose.o $@
gzlib.lo: $(SRCDIR)gzlib.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzlib.o $(SRCDIR)gzlib.c
-@mv objs/gzlib.o $@
gzread.lo: $(SRCDIR)gzread.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzread.o $(SRCDIR)gzread.c
-@mv objs/gzread.o $@
gzwrite.lo: $(SRCDIR)gzwrite.c
-@mkdir objs 2>/dev/null || test -d objs
$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzwrite.o $(SRCDIR)gzwrite.c
-@mv objs/gzwrite.o $@
placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a
$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
rm -f $(SHAREDLIB) $(SHAREDLIBM)
ln -s $@ $(SHAREDLIB)
ln -s $@ $(SHAREDLIBM)
-@rmdir objs
example$(EXE): example.o $(STATICLIB)
$(CC) $(CFLAGS) -o $@ example.o $(TEST_LDFLAGS)
minigzip$(EXE): minigzip.o $(STATICLIB)
$(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
examplesh$(EXE): example.o $(SHAREDLIBV)
$(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
$(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
example64$(EXE): example64.o $(STATICLIB)
$(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
minigzip64$(EXE): minigzip64.o $(STATICLIB)
$(CC) $(CFLAGS) -o $@ minigzip64.o $(TEST_LDFLAGS)
install-libs: $(LIBS)
-@if [ ! -d $(DESTDIR)$(exec_prefix) ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
-@if [ ! -d $(DESTDIR)$(libdir) ]; then mkdir -p $(DESTDIR)$(libdir); fi
-@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi
-@if [ ! -d $(DESTDIR)$(man3dir) ]; then mkdir -p $(DESTDIR)$(man3dir); fi
-@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
rm -f $(DESTDIR)$(libdir)/$(STATICLIB)
cp $(STATICLIB) $(DESTDIR)$(libdir)
chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
-@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
-@if test -n "$(SHAREDLIBV)"; then \
rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
($(LDCONFIG) || true) >/dev/null 2>&1; \
fi
rm -f $(DESTDIR)$(man3dir)/zlib.3
cp $(SRCDIR)zlib.3 $(DESTDIR)$(man3dir)
chmod 644 $(DESTDIR)$(man3dir)/zlib.3
rm -f $(DESTDIR)$(pkgconfigdir)/zlib.pc
cp zlib.pc $(DESTDIR)$(pkgconfigdir)
chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc
# The ranlib in install is needed on NeXTSTEP which checks file times
# ldconfig is for Linux
install: install-libs
-@if [ ! -d $(DESTDIR)$(includedir) ]; then mkdir -p $(DESTDIR)$(includedir); fi
rm -f $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
cp $(SRCDIR)zlib.h zconf.h $(DESTDIR)$(includedir)
chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
uninstall:
cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
cd $(DESTDIR)$(libdir) && rm -f libz.a; \
if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
fi
cd $(DESTDIR)$(man3dir) && rm -f zlib.3
cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc
docs: zlib.3.pdf
zlib.3.pdf: $(SRCDIR)zlib.3
groff -mandoc -f H -T ps $(SRCDIR)zlib.3 | ps2pdf - $@
zconf.h.cmakein: $(SRCDIR)zconf.h.in
-@ TEMPFILE=zconfh_$$; \
echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
sed -f $$TEMPFILE $(SRCDIR)zconf.h.in > $@ &&\
touch -r $(SRCDIR)zconf.h.in $@ &&\
rm $$TEMPFILE
zconf: $(SRCDIR)zconf.h.in
cp -p $(SRCDIR)zconf.h.in zconf.h
mostlyclean: clean
clean:
rm -f *.o *.lo *~ \
example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
example64$(EXE) minigzip64$(EXE) \
infcover \
libz.* foo.gz so_locations \
_match.s maketree contrib/infback9/*.o
rm -rf objs
rm -f *.gcda *.gcno *.gcov
rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov
maintainer-clean: distclean
distclean: clean zconf zconf.h.cmakein docs
rm -f Makefile zlib.pc configure.log
-@rm -f .DS_Store
@if [ -f Makefile.in ]; then \
printf 'all:\n\t-@echo "Please use ./configure first. Thank you."\n' > Makefile ; \
printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile ; \
touch -r $(SRCDIR)Makefile.in Makefile ; fi
@if [ ! -f zconf.h.in ]; then rm -f zconf.h zconf.h.cmakein ; fi
@if [ ! -f zlib.3 ]; then rm -f zlib.3.pdf ; fi
tags:
etags $(SRCDIR)*.[ch]
adler32.o zutil.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
gzclose.o gzlib.o gzread.o gzwrite.o: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
compress.o example.o minigzip.o uncompr.o: $(SRCDIR)zlib.h zconf.h
crc32.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
deflate.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
infback.o inflate.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
inffast.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
inftrees.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
trees.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h
adler32.lo zutil.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
gzclose.lo gzlib.lo gzread.lo gzwrite.lo: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
compress.lo example.lo minigzip.lo uncompr.lo: $(SRCDIR)zlib.h zconf.h
crc32.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
deflate.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
infback.lo inflate.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
inffast.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
inftrees.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
trees.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h

115
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ZLIB DATA COMPRESSION LIBRARY
zlib 1.2.11 is a general purpose data compression library. All the code is
thread safe. The data format used by the zlib library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
rfc1952 (gzip format).
All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
of the library is given in the file test/example.c which also tests that
the library is working correctly. Another example is given in the file
test/minigzip.c. The compression library itself is composed of all source
files in the root directory.
To compile all files and run the test program, follow the instructions given at
the top of Makefile.in. In short "./configure; make test", and if that goes
well, "make install" should work for most flavors of Unix. For Windows, use
one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use
make_vms.com.
Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
<info@winimage.com> for the Windows DLL version. The zlib home page is
http://zlib.net/ . Before reporting a problem, please check this site to
verify that you have the latest version of zlib; otherwise get the latest
version and check whether the problem still exists or not.
PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
issue of Dr. Dobb's Journal; a copy of the article is available at
http://marknelson.us/1997/01/01/zlib-engine/ .
The changes made in version 1.2.11 are documented in the file ChangeLog.
Unsupported third party contributions are provided in directory contrib/ .
zlib is available in Java using the java.util.zip package, documented at
http://java.sun.com/developer/technicalArticles/Programming/compression/ .
A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
at CPAN (Comprehensive Perl Archive Network) sites, including
http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
available in Python 1.5 and later versions, see
http://docs.python.org/library/zlib.html .
zlib is built into tcl: http://wiki.tcl.tk/4610 .
An experimental package to read and write files in .zip format, written on top
of zlib by Gilles Vollant <info@winimage.com>, is available in the
contrib/minizip directory of zlib.
Notes for some targets:
- For Windows DLL versions, please see win32/DLL_FAQ.txt
- For 64-bit Irix, deflate.c must be compiled without any optimization. With
-O, one libpng test fails. The test works in 32 bit mode (with the -n32
compiler flag). The compiler bug has been reported to SGI.
- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
when compiled with cc.
- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
necessary to get gzprintf working correctly. This is done by configure.
- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
other compilers. Use "make test" to check your compiler.
- gzdopen is not supported on RISCOS or BEOS.
- For PalmOs, see http://palmzlib.sourceforge.net/
Acknowledgments:
The deflate format used by zlib was defined by Phil Katz. The deflate and
zlib specifications were written by L. Peter Deutsch. Thanks to all the
people who reported problems and suggested various improvements in zlib; they
are too numerous to cite here.
Copyright notice:
(C) 1995-2017 Jean-loup Gailly and Mark Adler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
If you use the zlib library in a product, we would appreciate *not* receiving
lengthy legal documents to sign. The sources are provided for free but without
warranty of any kind. The library has been entirely written by Jean-loup
Gailly and Mark Adler; it does not include third-party code.
If you redistribute modified sources, we would appreciate that you include in
the file ChangeLog history information documenting your changes. Please read
the FAQ for more information on the distribution of modified source versions.

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/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-2011, 2016 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#include "zutil.h"
local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
#define BASE 65521U /* largest prime smaller than 65536 */
#define NMAX 5552
/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
#define DO16(buf) DO8(buf,0); DO8(buf,8);
/* use NO_DIVIDE if your processor does not do division in hardware --
try it both ways to see which is faster */
#ifdef NO_DIVIDE
/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
(thank you to John Reiser for pointing this out) */
# define CHOP(a) \
do { \
unsigned long tmp = a >> 16; \
a &= 0xffffUL; \
a += (tmp << 4) - tmp; \
} while (0)
# define MOD28(a) \
do { \
CHOP(a); \
if (a >= BASE) a -= BASE; \
} while (0)
# define MOD(a) \
do { \
CHOP(a); \
MOD28(a); \
} while (0)
# define MOD63(a) \
do { /* this assumes a is not negative */ \
z_off64_t tmp = a >> 32; \
a &= 0xffffffffL; \
a += (tmp << 8) - (tmp << 5) + tmp; \
tmp = a >> 16; \
a &= 0xffffL; \
a += (tmp << 4) - tmp; \
tmp = a >> 16; \
a &= 0xffffL; \
a += (tmp << 4) - tmp; \
if (a >= BASE) a -= BASE; \
} while (0)
#else
# define MOD(a) a %= BASE
# define MOD28(a) a %= BASE
# define MOD63(a) a %= BASE
#endif
/* ========================================================================= */
uLong ZEXPORT adler32_z(adler, buf, len)
uLong adler;
const Bytef *buf;
z_size_t len;
{
unsigned long sum2;
unsigned n;
/* split Adler-32 into component sums */
sum2 = (adler >> 16) & 0xffff;
adler &= 0xffff;
/* in case user likes doing a byte at a time, keep it fast */
if (len == 1) {
adler += buf[0];
if (adler >= BASE)
adler -= BASE;
sum2 += adler;
if (sum2 >= BASE)
sum2 -= BASE;
return adler | (sum2 << 16);
}
/* initial Adler-32 value (deferred check for len == 1 speed) */
if (buf == Z_NULL)
return 1L;
/* in case short lengths are provided, keep it somewhat fast */
if (len < 16) {
while (len--) {
adler += *buf++;
sum2 += adler;
}
if (adler >= BASE)
adler -= BASE;
MOD28(sum2); /* only added so many BASE's */
return adler | (sum2 << 16);
}
/* do length NMAX blocks -- requires just one modulo operation */
while (len >= NMAX) {
len -= NMAX;
n = NMAX / 16; /* NMAX is divisible by 16 */
do {
DO16(buf); /* 16 sums unrolled */
buf += 16;
} while (--n);
MOD(adler);
MOD(sum2);
}
/* do remaining bytes (less than NMAX, still just one modulo) */
if (len) { /* avoid modulos if none remaining */
while (len >= 16) {
len -= 16;
DO16(buf);
buf += 16;
}
while (len--) {
adler += *buf++;
sum2 += adler;
}
MOD(adler);
MOD(sum2);
}
/* return recombined sums */
return adler | (sum2 << 16);
}
/* ========================================================================= */
uLong ZEXPORT adler32(adler, buf, len)
uLong adler;
const Bytef *buf;
uInt len;
{
return adler32_z(adler, buf, len);
}
/* ========================================================================= */
local uLong adler32_combine_(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off64_t len2;
{
unsigned long sum1;
unsigned long sum2;
unsigned rem;
/* for negative len, return invalid adler32 as a clue for debugging */
if (len2 < 0)
return 0xffffffffUL;
/* the derivation of this formula is left as an exercise for the reader */
MOD63(len2); /* assumes len2 >= 0 */
rem = (unsigned)len2;
sum1 = adler1 & 0xffff;
sum2 = rem * sum1;
MOD(sum2);
sum1 += (adler2 & 0xffff) + BASE - 1;
sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
if (sum1 >= BASE) sum1 -= BASE;
if (sum1 >= BASE) sum1 -= BASE;
if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
if (sum2 >= BASE) sum2 -= BASE;
return sum1 | (sum2 << 16);
}
/* ========================================================================= */
uLong ZEXPORT adler32_combine(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off_t len2;
{
return adler32_combine_(adler1, adler2, len2);
}
uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
uLong adler1;
uLong adler2;
z_off64_t len2;
{
return adler32_combine_(adler1, adler2, len2);
}

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# Amiga powerUP (TM) Makefile
# makefile for libpng and SAS C V6.58/7.00 PPC compiler
# Copyright (C) 1998 by Andreas R. Kleinert
LIBNAME = libzip.a
CC = scppc
CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
AR = ppc-amigaos-ar cr
RANLIB = ppc-amigaos-ranlib
LD = ppc-amigaos-ld -r
LDFLAGS = -o
LDLIBS = LIB:scppc.a LIB:end.o
RM = delete quiet
OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
TEST_OBJS = example.o minigzip.o
all: example minigzip
check: test
test: all
example
echo hello world | minigzip | minigzip -d
$(LIBNAME): $(OBJS)
$(AR) $@ $(OBJS)
-$(RANLIB) $@
example: example.o $(LIBNAME)
$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
minigzip: minigzip.o $(LIBNAME)
$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
mostlyclean: clean
clean:
$(RM) *.o example minigzip $(LIBNAME) foo.gz
zip:
zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
descrip.mms *.[ch]
tgz:
cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
# DO NOT DELETE THIS LINE -- make depend depends on it.
adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: crc32.h zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
example.o: zlib.h zconf.h
gzclose.o: zlib.h zconf.h gzguts.h
gzlib.o: zlib.h zconf.h gzguts.h
gzread.o: zlib.h zconf.h gzguts.h
gzwrite.o: zlib.h zconf.h gzguts.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
minigzip.o: zlib.h zconf.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h

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# SMakefile for zlib
# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
# Amiga, SAS/C 6.56 & Smake
CC=sc
CFLAGS=OPT
#CFLAGS=OPT CPU=68030
#CFLAGS=DEBUG=LINE
LDFLAGS=LIB z.lib
SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
DEF=POSTINC
OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
TEST_OBJS = example.o minigzip.o
all: SCOPTIONS example minigzip
check: test
test: all
example
echo hello world | minigzip | minigzip -d
install: z.lib
copy clone zlib.h zconf.h INCLUDE:
copy clone z.lib LIB:
z.lib: $(OBJS)
oml z.lib r $(OBJS)
example: example.o z.lib
$(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)
minigzip: minigzip.o z.lib
$(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)
mostlyclean: clean
clean:
-delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS
SCOPTIONS: Makefile.sas
copy to $@ <from <
$(SCOPTIONS)
<
# DO NOT DELETE THIS LINE -- make depend depends on it.
adler32.o: zlib.h zconf.h
compress.o: zlib.h zconf.h
crc32.o: crc32.h zlib.h zconf.h
deflate.o: deflate.h zutil.h zlib.h zconf.h
example.o: zlib.h zconf.h
gzclose.o: zlib.h zconf.h gzguts.h
gzlib.o: zlib.h zconf.h gzguts.h
gzread.o: zlib.h zconf.h gzguts.h
gzwrite.o: zlib.h zconf.h gzguts.h
inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
inftrees.o: zutil.h zlib.h zconf.h inftrees.h
minigzip.o: zlib.h zconf.h
trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
uncompr.o: zlib.h zconf.h
zutil.o: zutil.h zlib.h zconf.h

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/* compress.c -- compress a memory buffer
* Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* @(#) $Id$ */
#define ZLIB_INTERNAL
#include "zlib.h"
/* ===========================================================================
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
length of the source buffer. Upon entry, destLen is the total size of the
destination buffer, which must be at least 0.1% larger than sourceLen plus
12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
int level;
{
z_stream stream;
int err;
const uInt max = (uInt)-1;
uLong left;
left = *destLen;
*destLen = 0;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
stream.opaque = (voidpf)0;
err = deflateInit(&stream, level);
if (err != Z_OK) return err;
stream.next_out = dest;
stream.avail_out = 0;
stream.next_in = (z_const Bytef *)source;
stream.avail_in = 0;
do {
if (stream.avail_out == 0) {
stream.avail_out = left > (uLong)max ? max : (uInt)left;
left -= stream.avail_out;
}
if (stream.avail_in == 0) {
stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen;
sourceLen -= stream.avail_in;
}
err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
} while (err == Z_OK);
*destLen = stream.total_out;
deflateEnd(&stream);
return err == Z_STREAM_END ? Z_OK : err;
}
/* ===========================================================================
*/
int ZEXPORT compress (dest, destLen, source, sourceLen)
Bytef *dest;
uLongf *destLen;
const Bytef *source;
uLong sourceLen;
{
return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
}
/* ===========================================================================
If the default memLevel or windowBits for deflateInit() is changed, then
this function needs to be updated.
*/
uLong ZEXPORT compressBound (sourceLen)
uLong sourceLen;
{
return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
(sourceLen >> 25) + 13;
}

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#!/bin/sh
# configure script for zlib.
#
# Normally configure builds both a static and a shared library.
# If you want to build just a static library, use: ./configure --static
#
# To impose specific compiler or flags or install directory, use for example:
# prefix=$HOME CC=cc CFLAGS="-O4" ./configure
# or for csh/tcsh users:
# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
# If you have problems, try without defining CC and CFLAGS before reporting
# an error.
# start off configure.log
echo -------------------- >> configure.log
echo $0 $* >> configure.log
date >> configure.log
# get source directory
SRCDIR=`dirname $0`
if test $SRCDIR = "."; then
ZINC=""
ZINCOUT="-I."
SRCDIR=""
else
ZINC='-include zconf.h'
ZINCOUT='-I. -I$(SRCDIR)'
SRCDIR="$SRCDIR/"
fi
# set command prefix for cross-compilation
if [ -n "${CHOST}" ]; then
uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
CROSS_PREFIX="${CHOST}-"
fi
# destination name for static library
STATICLIB=libz.a
# extract zlib version numbers from zlib.h
VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < ${SRCDIR}zlib.h`
VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < ${SRCDIR}zlib.h`
VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < ${SRCDIR}zlib.h`
# establish commands for library building
if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
AR=${AR-"${CROSS_PREFIX}ar"}
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
else
AR=${AR-"ar"}
test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
fi
ARFLAGS=${ARFLAGS-"rc"}
if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
else
RANLIB=${RANLIB-"ranlib"}
fi
if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
NM=${NM-"${CROSS_PREFIX}nm"}
test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
else
NM=${NM-"nm"}
fi
# set defaults before processing command line options
LDCONFIG=${LDCONFIG-"ldconfig"}
LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
ARCHS=
prefix=${prefix-/usr/local}
exec_prefix=${exec_prefix-'${prefix}'}
libdir=${libdir-'${exec_prefix}/lib'}
sharedlibdir=${sharedlibdir-'${libdir}'}
includedir=${includedir-'${prefix}/include'}
mandir=${mandir-'${prefix}/share/man'}
shared_ext='.so'
shared=1
solo=0
cover=0
zprefix=0
zconst=0
build64=0
gcc=0
warn=0
debug=0
old_cc="$CC"
old_cflags="$CFLAGS"
OBJC='$(OBJZ) $(OBJG)'
PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
# leave this script, optionally in a bad way
leave()
{
if test "$*" != "0"; then
echo "** $0 aborting." | tee -a configure.log
fi
rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
echo -------------------- >> configure.log
echo >> configure.log
echo >> configure.log
exit $1
}
# process command line options
while test $# -ge 1
do
case "$1" in
-h* | --help)
echo 'usage:' | tee -a configure.log
echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
exit 0 ;;
-p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
-e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
-l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
--sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
-i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
-u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
-p* | --prefix) prefix="$2"; shift; shift ;;
-e* | --eprefix) exec_prefix="$2"; shift; shift ;;
-l* | --libdir) libdir="$2"; shift; shift ;;
-i* | --includedir) includedir="$2"; shift; shift ;;
-s* | --shared | --enable-shared) shared=1; shift ;;
-t | --static) shared=0; shift ;;
--solo) solo=1; shift ;;
--cover) cover=1; shift ;;
-z* | --zprefix) zprefix=1; shift ;;
-6* | --64) build64=1; shift ;;
-a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
--sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
--localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
-c* | --const) zconst=1; shift ;;
-w* | --warn) warn=1; shift ;;
-d* | --debug) debug=1; shift ;;
*)
echo "unknown option: $1" | tee -a configure.log
echo "$0 --help for help" | tee -a configure.log
leave 1;;
esac
done
# temporary file name
test=ztest$$
# put arguments in log, also put test file in log if used in arguments
show()
{
case "$*" in
*$test.c*)
echo === $test.c === >> configure.log
cat $test.c >> configure.log
echo === >> configure.log;;
esac
echo $* >> configure.log
}
# check for gcc vs. cc and set compile and link flags based on the system identified by uname
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF
test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
cc=${CC-${CROSS_PREFIX}gcc}
cflags=${CFLAGS-"-O3"}
# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
case "$cc" in
*gcc*) gcc=1 ;;
*clang*) gcc=1 ;;
esac
case `$cc -v 2>&1` in
*gcc*) gcc=1 ;;
*clang*) gcc=1 ;;
esac
show $cc -c $test.c
if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
echo ... using gcc >> configure.log
CC="$cc"
CFLAGS="${CFLAGS--O3}"
SFLAGS="${CFLAGS--O3} -fPIC"
if test "$ARCHS"; then
CFLAGS="${CFLAGS} ${ARCHS}"
LDFLAGS="${LDFLAGS} ${ARCHS}"
fi
if test $build64 -eq 1; then
CFLAGS="${CFLAGS} -m64"
SFLAGS="${SFLAGS} -m64"
fi
if test "$warn" -eq 1; then
if test "$zconst" -eq 1; then
CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
else
CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
fi
fi
if test $debug -eq 1; then
CFLAGS="${CFLAGS} -DZLIB_DEBUG"
SFLAGS="${SFLAGS} -DZLIB_DEBUG"
fi
if test -z "$uname"; then
uname=`(uname -s || echo unknown) 2>/dev/null`
fi
case "$uname" in
Linux* | linux* | GNU | GNU/* | solaris*)
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"} ;;
*BSD | *bsd* | DragonFly)
LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,${SRCDIR}zlib.map"}
LDCONFIG="ldconfig -m" ;;
CYGWIN* | Cygwin* | cygwin* | OS/2*)
EXE='.exe' ;;
MINGW* | mingw*)
# temporary bypass
rm -f $test.[co] $test $test$shared_ext
echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
leave 1
LDSHARED=${LDSHARED-"$cc -shared"}
LDSHAREDLIBC=""
EXE='.exe' ;;
QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
# (alain.bonnefoy@icbt.com)
LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
HP-UX*)
LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
case `(uname -m || echo unknown) 2>/dev/null` in
ia64)
shared_ext='.so'
SHAREDLIB='libz.so' ;;
*)
shared_ext='.sl'
SHAREDLIB='libz.sl' ;;
esac ;;
Darwin* | darwin*)
shared_ext='.dylib'
SHAREDLIB=libz$shared_ext
SHAREDLIBV=libz.$VER$shared_ext
SHAREDLIBM=libz.$VER1$shared_ext
LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
if libtool -V 2>&1 | grep Apple > /dev/null; then
AR="libtool"
else
AR="/usr/bin/libtool"
fi
ARFLAGS="-o" ;;
*) LDSHARED=${LDSHARED-"$cc -shared"} ;;
esac
else
# find system name and corresponding cc options
CC=${CC-cc}
gcc=0
echo ... using $CC >> configure.log
if test -z "$uname"; then
uname=`(uname -sr || echo unknown) 2>/dev/null`
fi
case "$uname" in
HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
CFLAGS=${CFLAGS-"-O"}
# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
LDSHARED=${LDSHARED-"ld -b"}
case `(uname -m || echo unknown) 2>/dev/null` in
ia64)
shared_ext='.so'
SHAREDLIB='libz.so' ;;
*)
shared_ext='.sl'
SHAREDLIB='libz.sl' ;;
esac ;;
IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
CFLAGS=${CFLAGS-"-ansi -O2"}
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
CFLAGS=${CFLAGS-"-O -std1"}
LDFLAGS="${LDFLAGS} -Wl,-rpath,."
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
CFLAGS=${CFLAGS-"-O -std1"}
LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
QNX*) SFLAGS=${CFLAGS-"-4 -O"}
CFLAGS=${CFLAGS-"-4 -O"}
LDSHARED=${LDSHARED-"cc"}
RANLIB=${RANLIB-"true"}
AR="cc"
ARFLAGS="-A" ;;
SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
CFLAGS=${CFLAGS-"-O3"}
LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
SunOS\ 5* | solaris*)
LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
SFLAGS=${CFLAGS-"-fast -KPIC"}
CFLAGS=${CFLAGS-"-fast"}
if test $build64 -eq 1; then
# old versions of SunPRO/Workshop/Studio don't support -m64,
# but newer ones do. Check for it.
flag64=`$CC -flags | egrep -- '^-m64'`
if test x"$flag64" != x"" ; then
CFLAGS="${CFLAGS} -m64"
SFLAGS="${SFLAGS} -m64"
else
case `(uname -m || echo unknown) 2>/dev/null` in
i86*)
SFLAGS="$SFLAGS -xarch=amd64"
CFLAGS="$CFLAGS -xarch=amd64" ;;
*)
SFLAGS="$SFLAGS -xarch=v9"
CFLAGS="$CFLAGS -xarch=v9" ;;
esac
fi
fi
if test -n "$ZINC"; then
ZINC='-I- -I. -I$(SRCDIR)'
fi
;;
SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
CFLAGS=${CFLAGS-"-O2"}
LDSHARED=${LDSHARED-"ld"} ;;
SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
UNIX_System_V\ 4.2.0)
SFLAGS=${CFLAGS-"-KPIC -O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -G"} ;;
UNIX_SV\ 4.2MP)
SFLAGS=${CFLAGS-"-Kconform_pic -O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -G"} ;;
OpenUNIX\ 5)
SFLAGS=${CFLAGS-"-KPIC -O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -G"} ;;
AIX*) # Courtesy of dbakker@arrayasolutions.com
SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
LDSHARED=${LDSHARED-"xlc -G"} ;;
# send working options for other systems to zlib@gzip.org
*) SFLAGS=${CFLAGS-"-O"}
CFLAGS=${CFLAGS-"-O"}
LDSHARED=${LDSHARED-"cc -shared"} ;;
esac
fi
# destination names for shared library if not defined above
SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
echo >> configure.log
# define functions for testing compiler and library characteristics and logging the results
cat > $test.c <<EOF
#error error
EOF
if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
try()
{
show $*
test "`( $* ) 2>&1 | tee -a configure.log`" = ""
}
echo - using any output from compiler to indicate an error >> configure.log
else
try()
{
show $*
( $* ) >> configure.log 2>&1
ret=$?
if test $ret -ne 0; then
echo "(exit code "$ret")" >> configure.log
fi
return $ret
}
fi
tryboth()
{
show $*
got=`( $* ) 2>&1`
ret=$?
printf %s "$got" >> configure.log
if test $ret -ne 0; then
return $ret
fi
test "$got" = ""
}
cat > $test.c << EOF
int foo() { return 0; }
EOF
echo "Checking for obsessive-compulsive compiler options..." >> configure.log
if try $CC -c $CFLAGS $test.c; then
:
else
echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
leave 1
fi
echo >> configure.log
# see if shared library build supported
cat > $test.c <<EOF
extern int getchar();
int hello() {return getchar();}
EOF
if test $shared -eq 1; then
echo Checking for shared library support... | tee -a configure.log
# we must test in two steps (cc then ld), required at least on SunOS 4.x
if try $CC -w -c $SFLAGS $test.c &&
try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
elif test -z "$old_cc" -a -z "$old_cflags"; then
echo No shared library support. | tee -a configure.log
shared=0;
else
echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
shared=0;
fi
fi
if test $shared -eq 0; then
LDSHARED="$CC"
ALL="static"
TEST="all teststatic"
SHAREDLIB=""
SHAREDLIBV=""
SHAREDLIBM=""
echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
else
ALL="static shared"
TEST="all teststatic testshared"
fi
# check for underscores in external names for use by assembler code
CPP=${CPP-"$CC -E"}
case $CFLAGS in
*ASMV*)
echo >> configure.log
show "$NM $test.o | grep _hello"
if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
CPP="$CPP -DNO_UNDERLINE"
echo Checking for underline in external names... No. | tee -a configure.log
else
echo Checking for underline in external names... Yes. | tee -a configure.log
fi ;;
esac
echo >> configure.log
# check for size_t
cat > $test.c <<EOF
#include <stdio.h>
#include <stdlib.h>
size_t dummy = 0;
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for size_t... Yes." | tee -a configure.log
need_sizet=0
else
echo "Checking for size_t... No." | tee -a configure.log
need_sizet=1
fi
echo >> configure.log
# find the size_t integer type, if needed
if test $need_sizet -eq 1; then
cat > $test.c <<EOF
long long dummy = 0;
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for long long... Yes." | tee -a configure.log
cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
if (sizeof(void *) <= sizeof(int)) puts("int");
else if (sizeof(void *) <= sizeof(long)) puts("long");
else puts("z_longlong");
return 0;
}
EOF
else
echo "Checking for long long... No." | tee -a configure.log
cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
if (sizeof(void *) <= sizeof(int)) puts("int");
else puts("long");
return 0;
}
EOF
fi
if try $CC $CFLAGS -o $test $test.c; then
sizet=`./$test`
echo "Checking for a pointer-size integer type..." $sizet"." | tee -a configure.log
else
echo "Failed to find a pointer-size integer type." | tee -a configure.log
leave 1
fi
fi
if test $need_sizet -eq 1; then
CFLAGS="${CFLAGS} -DNO_SIZE_T=${sizet}"
SFLAGS="${SFLAGS} -DNO_SIZE_T=${sizet}"
fi
echo >> configure.log
# check for large file support, and if none, check for fseeko()
cat > $test.c <<EOF
#include <sys/types.h>
off64_t dummy = 0;
EOF
if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
ALL="${ALL} all64"
TEST="${TEST} test64"
echo "Checking for off64_t... Yes." | tee -a configure.log
echo "Checking for fseeko... Yes." | tee -a configure.log
else
echo "Checking for off64_t... No." | tee -a configure.log
echo >> configure.log
cat > $test.c <<EOF
#include <stdio.h>
int main(void) {
fseeko(NULL, 0, 0);
return 0;
}
EOF
if try $CC $CFLAGS -o $test $test.c; then
echo "Checking for fseeko... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_FSEEKO"
SFLAGS="${SFLAGS} -DNO_FSEEKO"
echo "Checking for fseeko... No." | tee -a configure.log
fi
fi
echo >> configure.log
# check for strerror() for use by gz* functions
cat > $test.c <<EOF
#include <string.h>
#include <errno.h>
int main() { return strlen(strerror(errno)); }
EOF
if try $CC $CFLAGS -o $test $test.c; then
echo "Checking for strerror... Yes." | tee -a configure.log
else
CFLAGS="${CFLAGS} -DNO_STRERROR"
SFLAGS="${SFLAGS} -DNO_STRERROR"
echo "Checking for strerror... No." | tee -a configure.log
fi
# copy clean zconf.h for subsequent edits
cp -p ${SRCDIR}zconf.h.in zconf.h
echo >> configure.log
# check for unistd.h and save result in zconf.h
cat > $test.c <<EOF
#include <unistd.h>
int main() { return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
mv zconf.temp.h zconf.h
echo "Checking for unistd.h... Yes." | tee -a configure.log
else
echo "Checking for unistd.h... No." | tee -a configure.log
fi
echo >> configure.log
# check for stdarg.h and save result in zconf.h
cat > $test.c <<EOF
#include <stdarg.h>
int main() { return 0; }
EOF
if try $CC -c $CFLAGS $test.c; then
sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
mv zconf.temp.h zconf.h
echo "Checking for stdarg.h... Yes." | tee -a configure.log
else
echo "Checking for stdarg.h... No." | tee -a configure.log
fi
# if the z_ prefix was requested, save that in zconf.h
if test $zprefix -eq 1; then
sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
mv zconf.temp.h zconf.h
echo >> configure.log
echo "Using z_ prefix on all symbols." | tee -a configure.log
fi
# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
if test $solo -eq 1; then
sed '/#define ZCONF_H/a\
#define Z_SOLO
' < zconf.h > zconf.temp.h
mv zconf.temp.h zconf.h
OBJC='$(OBJZ)'
PIC_OBJC='$(PIC_OBJZ)'
fi
# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
if test $cover -eq 1; then
CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
if test -n "$GCC_CLASSIC"; then
CC=$GCC_CLASSIC
fi
fi
echo >> configure.log
# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
# return value. The most secure result is vsnprintf() with a return value. snprintf() with a
# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
cat > $test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
#include "zconf.h"
int main()
{
#ifndef STDC
choke me
#endif
return 0;
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
echo >> configure.log
cat > $test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
char buf[20];
va_list ap;
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
return 0;
}
int main()
{
return (mytest("Hello%d\n", 1));
}
EOF
if try $CC $CFLAGS -o $test $test.c; then
echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
echo >> configure.log
cat >$test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
int n;
char buf[20];
va_list ap;
va_start(ap, fmt);
n = vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
return n;
}
int main()
{
return (mytest("Hello%d\n", 1));
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
else
CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
echo " can build but will be open to possible string-format security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
fi
else
CFLAGS="$CFLAGS -DNO_vsnprintf"
SFLAGS="$SFLAGS -DNO_vsnprintf"
echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
echo >> configure.log
cat >$test.c <<EOF
#include <stdio.h>
#include <stdarg.h>
int mytest(const char *fmt, ...)
{
int n;
char buf[20];
va_list ap;
va_start(ap, fmt);
n = vsprintf(buf, fmt, ap);
va_end(ap);
return n;
}
int main()
{
return (mytest("Hello%d\n", 1));
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
else
CFLAGS="$CFLAGS -DHAS_vsprintf_void"
SFLAGS="$SFLAGS -DHAS_vsprintf_void"
echo "Checking for return value of vsprintf()... No." | tee -a configure.log
echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
echo " can build but will be open to possible string-format security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
fi
fi
else
echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
echo >> configure.log
cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
char buf[20];
snprintf(buf, sizeof(buf), "%s", "foo");
return 0;
}
int main()
{
return (mytest());
}
EOF
if try $CC $CFLAGS -o $test $test.c; then
echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
echo >> configure.log
cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
char buf[20];
return snprintf(buf, sizeof(buf), "%s", "foo");
}
int main()
{
return (mytest());
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
else
CFLAGS="$CFLAGS -DHAS_snprintf_void"
SFLAGS="$SFLAGS -DHAS_snprintf_void"
echo "Checking for return value of snprintf()... No." | tee -a configure.log
echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
echo " can build but will be open to possible string-format security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
fi
else
CFLAGS="$CFLAGS -DNO_snprintf"
SFLAGS="$SFLAGS -DNO_snprintf"
echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
echo >> configure.log
cat >$test.c <<EOF
#include <stdio.h>
int mytest()
{
char buf[20];
return sprintf(buf, "%s", "foo");
}
int main()
{
return (mytest());
}
EOF
if try $CC -c $CFLAGS $test.c; then
echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
else
CFLAGS="$CFLAGS -DHAS_sprintf_void"
SFLAGS="$SFLAGS -DHAS_sprintf_void"
echo "Checking for return value of sprintf()... No." | tee -a configure.log
echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
echo " can build but will be open to possible string-format security" | tee -a configure.log
echo " vulnerabilities." | tee -a configure.log
fi
fi
fi
# see if we can hide zlib internal symbols that are linked between separate source files
if test "$gcc" -eq 1; then
echo >> configure.log
cat > $test.c <<EOF
#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
int ZLIB_INTERNAL foo;
int main()
{
return 0;
}
EOF
if tryboth $CC -c $CFLAGS $test.c; then
CFLAGS="$CFLAGS -DHAVE_HIDDEN"
SFLAGS="$SFLAGS -DHAVE_HIDDEN"
echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
else
echo "Checking for attribute(visibility) support... No." | tee -a configure.log
fi
fi
# show the results in the log
echo >> configure.log
echo ALL = $ALL >> configure.log
echo AR = $AR >> configure.log
echo ARFLAGS = $ARFLAGS >> configure.log
echo CC = $CC >> configure.log
echo CFLAGS = $CFLAGS >> configure.log
echo CPP = $CPP >> configure.log
echo EXE = $EXE >> configure.log
echo LDCONFIG = $LDCONFIG >> configure.log
echo LDFLAGS = $LDFLAGS >> configure.log
echo LDSHARED = $LDSHARED >> configure.log
echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
echo OBJC = $OBJC >> configure.log
echo PIC_OBJC = $PIC_OBJC >> configure.log
echo RANLIB = $RANLIB >> configure.log
echo SFLAGS = $SFLAGS >> configure.log
echo SHAREDLIB = $SHAREDLIB >> configure.log
echo SHAREDLIBM = $SHAREDLIBM >> configure.log
echo SHAREDLIBV = $SHAREDLIBV >> configure.log
echo STATICLIB = $STATICLIB >> configure.log
echo TEST = $TEST >> configure.log
echo VER = $VER >> configure.log
echo Z_U4 = $Z_U4 >> configure.log
echo SRCDIR = $SRCDIR >> configure.log
echo exec_prefix = $exec_prefix >> configure.log
echo includedir = $includedir >> configure.log
echo libdir = $libdir >> configure.log
echo mandir = $mandir >> configure.log
echo prefix = $prefix >> configure.log
echo sharedlibdir = $sharedlibdir >> configure.log
echo uname = $uname >> configure.log
# udpate Makefile with the configure results
sed < ${SRCDIR}Makefile.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^SFLAGS *=/s#=.*#=$SFLAGS#
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
/^LDSHARED *=/s#=.*#=$LDSHARED#
/^CPP *=/s#=.*#=$CPP#
/^STATICLIB *=/s#=.*#=$STATICLIB#
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
/^AR *=/s#=.*#=$AR#
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
/^RANLIB *=/s#=.*#=$RANLIB#
/^LDCONFIG *=/s#=.*#=$LDCONFIG#
/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
/^EXE *=/s#=.*#=$EXE#
/^SRCDIR *=/s#=.*#=$SRCDIR#
/^ZINC *=/s#=.*#=$ZINC#
/^ZINCOUT *=/s#=.*#=$ZINCOUT#
/^prefix *=/s#=.*#=$prefix#
/^exec_prefix *=/s#=.*#=$exec_prefix#
/^libdir *=/s#=.*#=$libdir#
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
/^includedir *=/s#=.*#=$includedir#
/^mandir *=/s#=.*#=$mandir#
/^OBJC *=/s#=.*#= $OBJC#
/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
/^all: */s#:.*#: $ALL#
/^test: */s#:.*#: $TEST#
" > Makefile
# create zlib.pc with the configure results
sed < ${SRCDIR}zlib.pc.in "
/^CC *=/s#=.*#=$CC#
/^CFLAGS *=/s#=.*#=$CFLAGS#
/^CPP *=/s#=.*#=$CPP#
/^LDSHARED *=/s#=.*#=$LDSHARED#
/^STATICLIB *=/s#=.*#=$STATICLIB#
/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
/^AR *=/s#=.*#=$AR#
/^ARFLAGS *=/s#=.*#=$ARFLAGS#
/^RANLIB *=/s#=.*#=$RANLIB#
/^EXE *=/s#=.*#=$EXE#
/^prefix *=/s#=.*#=$prefix#
/^exec_prefix *=/s#=.*#=$exec_prefix#
/^libdir *=/s#=.*#=$libdir#
/^sharedlibdir *=/s#=.*#=$sharedlibdir#
/^includedir *=/s#=.*#=$includedir#
/^mandir *=/s#=.*#=$mandir#
/^LDFLAGS *=/s#=.*#=$LDFLAGS#
" | sed -e "
s/\@VERSION\@/$VER/g;
" > zlib.pc
# done
leave 0

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All files under this contrib directory are UNSUPPORTED. There were
provided by users of zlib and were not tested by the authors of zlib.
Use at your own risk. Please contact the authors of the contributions
for help about these, not the zlib authors. Thanks.
ada/ by Dmitriy Anisimkov <anisimkov@yahoo.com>
Support for Ada
See http://zlib-ada.sourceforge.net/
amd64/ by Mikhail Teterin <mi@ALDAN.algebra.com>
asm code for AMD64
See patch at http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/96393
asm686/ by Brian Raiter <breadbox@muppetlabs.com>
asm code for Pentium and PPro/PII, using the AT&T (GNU as) syntax
See http://www.muppetlabs.com/~breadbox/software/assembly.html
blast/ by Mark Adler <madler@alumni.caltech.edu>
Decompressor for output of PKWare Data Compression Library (DCL)
delphi/ by Cosmin Truta <cosmint@cs.ubbcluj.ro>
Support for Delphi and C++ Builder
dotzlib/ by Henrik Ravn <henrik@ravn.com>
Support for Microsoft .Net and Visual C++ .Net
gcc_gvmat64/by Gilles Vollant <info@winimage.com>
GCC Version of x86 64-bit (AMD64 and Intel EM64t) code for x64
assembler to replace longest_match() and inflate_fast()
infback9/ by Mark Adler <madler@alumni.caltech.edu>
Unsupported diffs to infback to decode the deflate64 format
inflate86/ by Chris Anderson <christop@charm.net>
Tuned x86 gcc asm code to replace inflate_fast()
iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
A C++ I/O streams interface to the zlib gz* functions
iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
Another C++ I/O streams interface
iostream3/ by Ludwig Schwardt <schwardt@sun.ac.za>
and Kevin Ruland <kevin@rodin.wustl.edu>
Yet another C++ I/O streams interface
masmx64/ by Gilles Vollant <info@winimage.com>
x86 64-bit (AMD64 and Intel EM64t) code for x64 assembler to
replace longest_match() and inflate_fast(), also masm x86
64-bits translation of Chris Anderson inflate_fast()
masmx86/ by Gilles Vollant <info@winimage.com>
x86 asm code to replace longest_match() and inflate_fast(),
for Visual C++ and MASM (32 bits).
Based on Brian Raiter (asm686) and Chris Anderson (inflate86)
minizip/ by Gilles Vollant <info@winimage.com>
Mini zip and unzip based on zlib
Includes Zip64 support by Mathias Svensson <mathias@result42.com>
See http://www.winimage.com/zLibDll/minizip.html
pascal/ by Bob Dellaca <bobdl@xtra.co.nz> et al.
Support for Pascal
puff/ by Mark Adler <madler@alumni.caltech.edu>
Small, low memory usage inflate. Also serves to provide an
unambiguous description of the deflate format.
testzlib/ by Gilles Vollant <info@winimage.com>
Example of the use of zlib
untgz/ by Pedro A. Aranda Gutierrez <paag@tid.es>
A very simple tar.gz file extractor using zlib
vstudio/ by Gilles Vollant <info@winimage.com>
Building a minizip-enhanced zlib with Microsoft Visual Studio
Includes vc11 from kreuzerkrieg and vc12 from davispuh

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
--
-- $Id: buffer_demo.adb,v 1.3 2004/09/06 06:55:35 vagul Exp $
-- This demo program provided by Dr Steve Sangwine <sjs@essex.ac.uk>
--
-- Demonstration of a problem with Zlib-Ada (already fixed) when a buffer
-- of exactly the correct size is used for decompressed data, and the last
-- few bytes passed in to Zlib are checksum bytes.
-- This program compresses a string of text, and then decompresses the
-- compressed text into a buffer of the same size as the original text.
with Ada.Streams; use Ada.Streams;
with Ada.Text_IO;
with ZLib; use ZLib;
procedure Buffer_Demo is
EOL : Character renames ASCII.LF;
Text : constant String
:= "Four score and seven years ago our fathers brought forth," & EOL &
"upon this continent, a new nation, conceived in liberty," & EOL &
"and dedicated to the proposition that `all men are created equal'.";
Source : Stream_Element_Array (1 .. Text'Length);
for Source'Address use Text'Address;
begin
Ada.Text_IO.Put (Text);
Ada.Text_IO.New_Line;
Ada.Text_IO.Put_Line
("Uncompressed size : " & Positive'Image (Text'Length) & " bytes");
declare
Compressed_Data : Stream_Element_Array (1 .. Text'Length);
L : Stream_Element_Offset;
begin
Compress : declare
Compressor : Filter_Type;
I : Stream_Element_Offset;
begin
Deflate_Init (Compressor);
-- Compress the whole of T at once.
Translate (Compressor, Source, I, Compressed_Data, L, Finish);
pragma Assert (I = Source'Last);
Close (Compressor);
Ada.Text_IO.Put_Line
("Compressed size : "
& Stream_Element_Offset'Image (L) & " bytes");
end Compress;
-- Now we decompress the data, passing short blocks of data to Zlib
-- (because this demonstrates the problem - the last block passed will
-- contain checksum information and there will be no output, only a
-- check inside Zlib that the checksum is correct).
Decompress : declare
Decompressor : Filter_Type;
Uncompressed_Data : Stream_Element_Array (1 .. Text'Length);
Block_Size : constant := 4;
-- This makes sure that the last block contains
-- only Adler checksum data.
P : Stream_Element_Offset := Compressed_Data'First - 1;
O : Stream_Element_Offset;
begin
Inflate_Init (Decompressor);
loop
Translate
(Decompressor,
Compressed_Data
(P + 1 .. Stream_Element_Offset'Min (P + Block_Size, L)),
P,
Uncompressed_Data
(Total_Out (Decompressor) + 1 .. Uncompressed_Data'Last),
O,
No_Flush);
Ada.Text_IO.Put_Line
("Total in : " & Count'Image (Total_In (Decompressor)) &
", out : " & Count'Image (Total_Out (Decompressor)));
exit when P = L;
end loop;
Ada.Text_IO.New_Line;
Ada.Text_IO.Put_Line
("Decompressed text matches original text : "
& Boolean'Image (Uncompressed_Data = Source));
end Decompress;
end;
end Buffer_Demo;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- Continuous test for ZLib multithreading. If the test would fail
-- we should provide thread safe allocation routines for the Z_Stream.
--
-- $Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp $
with ZLib;
with Ada.Streams;
with Ada.Numerics.Discrete_Random;
with Ada.Text_IO;
with Ada.Exceptions;
with Ada.Task_Identification;
procedure MTest is
use Ada.Streams;
use ZLib;
Stop : Boolean := False;
pragma Atomic (Stop);
subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
package Random_Elements is
new Ada.Numerics.Discrete_Random (Visible_Symbols);
task type Test_Task;
task body Test_Task is
Buffer : Stream_Element_Array (1 .. 100_000);
Gen : Random_Elements.Generator;
Buffer_First : Stream_Element_Offset;
Compare_First : Stream_Element_Offset;
Deflate : Filter_Type;
Inflate : Filter_Type;
procedure Further (Item : in Stream_Element_Array);
procedure Read_Buffer
(Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset);
-------------
-- Further --
-------------
procedure Further (Item : in Stream_Element_Array) is
procedure Compare (Item : in Stream_Element_Array);
-------------
-- Compare --
-------------
procedure Compare (Item : in Stream_Element_Array) is
Next_First : Stream_Element_Offset := Compare_First + Item'Length;
begin
if Buffer (Compare_First .. Next_First - 1) /= Item then
raise Program_Error;
end if;
Compare_First := Next_First;
end Compare;
procedure Compare_Write is new ZLib.Write (Write => Compare);
begin
Compare_Write (Inflate, Item, No_Flush);
end Further;
-----------------
-- Read_Buffer --
-----------------
procedure Read_Buffer
(Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset)
is
Buff_Diff : Stream_Element_Offset := Buffer'Last - Buffer_First;
Next_First : Stream_Element_Offset;
begin
if Item'Length <= Buff_Diff then
Last := Item'Last;
Next_First := Buffer_First + Item'Length;
Item := Buffer (Buffer_First .. Next_First - 1);
Buffer_First := Next_First;
else
Last := Item'First + Buff_Diff;
Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
Buffer_First := Buffer'Last + 1;
end if;
end Read_Buffer;
procedure Translate is new Generic_Translate
(Data_In => Read_Buffer,
Data_Out => Further);
begin
Random_Elements.Reset (Gen);
Buffer := (others => 20);
Main : loop
for J in Buffer'Range loop
Buffer (J) := Random_Elements.Random (Gen);
Deflate_Init (Deflate);
Inflate_Init (Inflate);
Buffer_First := Buffer'First;
Compare_First := Buffer'First;
Translate (Deflate);
if Compare_First /= Buffer'Last + 1 then
raise Program_Error;
end if;
Ada.Text_IO.Put_Line
(Ada.Task_Identification.Image
(Ada.Task_Identification.Current_Task)
& Stream_Element_Offset'Image (J)
& ZLib.Count'Image (Total_Out (Deflate)));
Close (Deflate);
Close (Inflate);
exit Main when Stop;
end loop;
end loop Main;
exception
when E : others =>
Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
Stop := True;
end Test_Task;
Test : array (1 .. 4) of Test_Task;
pragma Unreferenced (Test);
Dummy : Character;
begin
Ada.Text_IO.Get_Immediate (Dummy);
Stop := True;
end MTest;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $
-- Test/demo program for the generic read interface.
with Ada.Numerics.Discrete_Random;
with Ada.Streams;
with Ada.Text_IO;
with ZLib;
procedure Read is
use Ada.Streams;
------------------------------------
-- Test configuration parameters --
------------------------------------
File_Size : Stream_Element_Offset := 100_000;
Continuous : constant Boolean := False;
-- If this constant is True, the test would be repeated again and again,
-- with increment File_Size for every iteration.
Header : constant ZLib.Header_Type := ZLib.Default;
-- Do not use Header other than Default in ZLib versions 1.1.4 and older.
Init_Random : constant := 8;
-- We are using the same random sequence, in case of we catch bug,
-- so we would be able to reproduce it.
-- End --
Pack_Size : Stream_Element_Offset;
Offset : Stream_Element_Offset;
Filter : ZLib.Filter_Type;
subtype Visible_Symbols
is Stream_Element range 16#20# .. 16#7E#;
package Random_Elements is new
Ada.Numerics.Discrete_Random (Visible_Symbols);
Gen : Random_Elements.Generator;
Period : constant Stream_Element_Offset := 200;
-- Period constant variable for random generator not to be very random.
-- Bigger period, harder random.
Read_Buffer : Stream_Element_Array (1 .. 2048);
Read_First : Stream_Element_Offset;
Read_Last : Stream_Element_Offset;
procedure Reset;
procedure Read
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset);
-- this procedure is for generic instantiation of
-- ZLib.Read
-- reading data from the File_In.
procedure Read is new ZLib.Read
(Read,
Read_Buffer,
Rest_First => Read_First,
Rest_Last => Read_Last);
----------
-- Read --
----------
procedure Read
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset) is
begin
Last := Stream_Element_Offset'Min
(Item'Last,
Item'First + File_Size - Offset);
for J in Item'First .. Last loop
if J < Item'First + Period then
Item (J) := Random_Elements.Random (Gen);
else
Item (J) := Item (J - Period);
end if;
Offset := Offset + 1;
end loop;
end Read;
-----------
-- Reset --
-----------
procedure Reset is
begin
Random_Elements.Reset (Gen, Init_Random);
Pack_Size := 0;
Offset := 1;
Read_First := Read_Buffer'Last + 1;
Read_Last := Read_Buffer'Last;
end Reset;
begin
Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
loop
for Level in ZLib.Compression_Level'Range loop
Ada.Text_IO.Put ("Level ="
& ZLib.Compression_Level'Image (Level));
-- Deflate using generic instantiation.
ZLib.Deflate_Init
(Filter,
Level,
Header => Header);
Reset;
Ada.Text_IO.Put
(Stream_Element_Offset'Image (File_Size) & " ->");
loop
declare
Buffer : Stream_Element_Array (1 .. 1024);
Last : Stream_Element_Offset;
begin
Read (Filter, Buffer, Last);
Pack_Size := Pack_Size + Last - Buffer'First + 1;
exit when Last < Buffer'Last;
end;
end loop;
Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
ZLib.Close (Filter);
end loop;
exit when not Continuous;
File_Size := File_Size + 1;
end loop;
end Read;

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ZLib for Ada thick binding (ZLib.Ada)
Release 1.3
ZLib.Ada is a thick binding interface to the popular ZLib data
compression library, available at http://www.gzip.org/zlib/.
It provides Ada-style access to the ZLib C library.
Here are the main changes since ZLib.Ada 1.2:
- Attension: ZLib.Read generic routine have a initialization requirement
for Read_Last parameter now. It is a bit incompartible with previous version,
but extends functionality, we could use new parameters Allow_Read_Some and
Flush now.
- Added Is_Open routines to ZLib and ZLib.Streams packages.
- Add pragma Assert to check Stream_Element is 8 bit.
- Fix extraction to buffer with exact known decompressed size. Error reported by
Steve Sangwine.
- Fix definition of ULong (changed to unsigned_long), fix regression on 64 bits
computers. Patch provided by Pascal Obry.
- Add Status_Error exception definition.
- Add pragma Assertion that Ada.Streams.Stream_Element size is 8 bit.
How to build ZLib.Ada under GNAT
You should have the ZLib library already build on your computer, before
building ZLib.Ada. Make the directory of ZLib.Ada sources current and
issue the command:
gnatmake test -largs -L<directory where libz.a is> -lz
Or use the GNAT project file build for GNAT 3.15 or later:
gnatmake -Pzlib.gpr -L<directory where libz.a is>
How to build ZLib.Ada under Aonix ObjectAda for Win32 7.2.2
1. Make a project with all *.ads and *.adb files from the distribution.
2. Build the libz.a library from the ZLib C sources.
3. Rename libz.a to z.lib.
4. Add the library z.lib to the project.
5. Add the libc.lib library from the ObjectAda distribution to the project.
6. Build the executable using test.adb as a main procedure.
How to use ZLib.Ada
The source files test.adb and read.adb are small demo programs that show
the main functionality of ZLib.Ada.
The routines from the package specifications are commented.
Homepage: http://zlib-ada.sourceforge.net/
Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
Contributors: Pascal Obry <pascal@obry.org>, Steve Sangwine <sjs@essex.ac.uk>

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: test.adb,v 1.17 2003/08/12 12:13:30 vagul Exp $
-- The program has a few aims.
-- 1. Test ZLib.Ada95 thick binding functionality.
-- 2. Show the example of use main functionality of the ZLib.Ada95 binding.
-- 3. Build this program automatically compile all ZLib.Ada95 packages under
-- GNAT Ada95 compiler.
with ZLib.Streams;
with Ada.Streams.Stream_IO;
with Ada.Numerics.Discrete_Random;
with Ada.Text_IO;
with Ada.Calendar;
procedure Test is
use Ada.Streams;
use Stream_IO;
------------------------------------
-- Test configuration parameters --
------------------------------------
File_Size : Count := 100_000;
Continuous : constant Boolean := False;
Header : constant ZLib.Header_Type := ZLib.Default;
-- ZLib.None;
-- ZLib.Auto;
-- ZLib.GZip;
-- Do not use Header other then Default in ZLib versions 1.1.4
-- and older.
Strategy : constant ZLib.Strategy_Type := ZLib.Default_Strategy;
Init_Random : constant := 10;
-- End --
In_File_Name : constant String := "testzlib.in";
-- Name of the input file
Z_File_Name : constant String := "testzlib.zlb";
-- Name of the compressed file.
Out_File_Name : constant String := "testzlib.out";
-- Name of the decompressed file.
File_In : File_Type;
File_Out : File_Type;
File_Back : File_Type;
File_Z : ZLib.Streams.Stream_Type;
Filter : ZLib.Filter_Type;
Time_Stamp : Ada.Calendar.Time;
procedure Generate_File;
-- Generate file of spetsified size with some random data.
-- The random data is repeatable, for the good compression.
procedure Compare_Streams
(Left, Right : in out Root_Stream_Type'Class);
-- The procedure compearing data in 2 streams.
-- It is for compare data before and after compression/decompression.
procedure Compare_Files (Left, Right : String);
-- Compare files. Based on the Compare_Streams.
procedure Copy_Streams
(Source, Target : in out Root_Stream_Type'Class;
Buffer_Size : in Stream_Element_Offset := 1024);
-- Copying data from one stream to another. It is for test stream
-- interface of the library.
procedure Data_In
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset);
-- this procedure is for generic instantiation of
-- ZLib.Generic_Translate.
-- reading data from the File_In.
procedure Data_Out (Item : in Stream_Element_Array);
-- this procedure is for generic instantiation of
-- ZLib.Generic_Translate.
-- writing data to the File_Out.
procedure Stamp;
-- Store the timestamp to the local variable.
procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count);
-- Print the time statistic with the message.
procedure Translate is new ZLib.Generic_Translate
(Data_In => Data_In,
Data_Out => Data_Out);
-- This procedure is moving data from File_In to File_Out
-- with compression or decompression, depend on initialization of
-- Filter parameter.
-------------------
-- Compare_Files --
-------------------
procedure Compare_Files (Left, Right : String) is
Left_File, Right_File : File_Type;
begin
Open (Left_File, In_File, Left);
Open (Right_File, In_File, Right);
Compare_Streams (Stream (Left_File).all, Stream (Right_File).all);
Close (Left_File);
Close (Right_File);
end Compare_Files;
---------------------
-- Compare_Streams --
---------------------
procedure Compare_Streams
(Left, Right : in out Ada.Streams.Root_Stream_Type'Class)
is
Left_Buffer, Right_Buffer : Stream_Element_Array (0 .. 16#FFF#);
Left_Last, Right_Last : Stream_Element_Offset;
begin
loop
Read (Left, Left_Buffer, Left_Last);
Read (Right, Right_Buffer, Right_Last);
if Left_Last /= Right_Last then
Ada.Text_IO.Put_Line ("Compare error :"
& Stream_Element_Offset'Image (Left_Last)
& " /= "
& Stream_Element_Offset'Image (Right_Last));
raise Constraint_Error;
elsif Left_Buffer (0 .. Left_Last)
/= Right_Buffer (0 .. Right_Last)
then
Ada.Text_IO.Put_Line ("ERROR: IN and OUT files is not equal.");
raise Constraint_Error;
end if;
exit when Left_Last < Left_Buffer'Last;
end loop;
end Compare_Streams;
------------------
-- Copy_Streams --
------------------
procedure Copy_Streams
(Source, Target : in out Ada.Streams.Root_Stream_Type'Class;
Buffer_Size : in Stream_Element_Offset := 1024)
is
Buffer : Stream_Element_Array (1 .. Buffer_Size);
Last : Stream_Element_Offset;
begin
loop
Read (Source, Buffer, Last);
Write (Target, Buffer (1 .. Last));
exit when Last < Buffer'Last;
end loop;
end Copy_Streams;
-------------
-- Data_In --
-------------
procedure Data_In
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset) is
begin
Read (File_In, Item, Last);
end Data_In;
--------------
-- Data_Out --
--------------
procedure Data_Out (Item : in Stream_Element_Array) is
begin
Write (File_Out, Item);
end Data_Out;
-------------------
-- Generate_File --
-------------------
procedure Generate_File is
subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
package Random_Elements is
new Ada.Numerics.Discrete_Random (Visible_Symbols);
Gen : Random_Elements.Generator;
Buffer : Stream_Element_Array := (1 .. 77 => 16#20#) & 10;
Buffer_Count : constant Count := File_Size / Buffer'Length;
-- Number of same buffers in the packet.
Density : constant Count := 30; -- from 0 to Buffer'Length - 2;
procedure Fill_Buffer (J, D : in Count);
-- Change the part of the buffer.
-----------------
-- Fill_Buffer --
-----------------
procedure Fill_Buffer (J, D : in Count) is
begin
for K in 0 .. D loop
Buffer
(Stream_Element_Offset ((J + K) mod (Buffer'Length - 1) + 1))
:= Random_Elements.Random (Gen);
end loop;
end Fill_Buffer;
begin
Random_Elements.Reset (Gen, Init_Random);
Create (File_In, Out_File, In_File_Name);
Fill_Buffer (1, Buffer'Length - 2);
for J in 1 .. Buffer_Count loop
Write (File_In, Buffer);
Fill_Buffer (J, Density);
end loop;
-- fill remain size.
Write
(File_In,
Buffer
(1 .. Stream_Element_Offset
(File_Size - Buffer'Length * Buffer_Count)));
Flush (File_In);
Close (File_In);
end Generate_File;
---------------------
-- Print_Statistic --
---------------------
procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count) is
use Ada.Calendar;
use Ada.Text_IO;
package Count_IO is new Integer_IO (ZLib.Count);
Curr_Dur : Duration := Clock - Time_Stamp;
begin
Put (Msg);
Set_Col (20);
Ada.Text_IO.Put ("size =");
Count_IO.Put
(Data_Size,
Width => Stream_IO.Count'Image (File_Size)'Length);
Put_Line (" duration =" & Duration'Image (Curr_Dur));
end Print_Statistic;
-----------
-- Stamp --
-----------
procedure Stamp is
begin
Time_Stamp := Ada.Calendar.Clock;
end Stamp;
begin
Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
loop
Generate_File;
for Level in ZLib.Compression_Level'Range loop
Ada.Text_IO.Put_Line ("Level ="
& ZLib.Compression_Level'Image (Level));
-- Test generic interface.
Open (File_In, In_File, In_File_Name);
Create (File_Out, Out_File, Z_File_Name);
Stamp;
-- Deflate using generic instantiation.
ZLib.Deflate_Init
(Filter => Filter,
Level => Level,
Strategy => Strategy,
Header => Header);
Translate (Filter);
Print_Statistic ("Generic compress", ZLib.Total_Out (Filter));
ZLib.Close (Filter);
Close (File_In);
Close (File_Out);
Open (File_In, In_File, Z_File_Name);
Create (File_Out, Out_File, Out_File_Name);
Stamp;
-- Inflate using generic instantiation.
ZLib.Inflate_Init (Filter, Header => Header);
Translate (Filter);
Print_Statistic ("Generic decompress", ZLib.Total_Out (Filter));
ZLib.Close (Filter);
Close (File_In);
Close (File_Out);
Compare_Files (In_File_Name, Out_File_Name);
-- Test stream interface.
-- Compress to the back stream.
Open (File_In, In_File, In_File_Name);
Create (File_Back, Out_File, Z_File_Name);
Stamp;
ZLib.Streams.Create
(Stream => File_Z,
Mode => ZLib.Streams.Out_Stream,
Back => ZLib.Streams.Stream_Access
(Stream (File_Back)),
Back_Compressed => True,
Level => Level,
Strategy => Strategy,
Header => Header);
Copy_Streams
(Source => Stream (File_In).all,
Target => File_Z);
-- Flushing internal buffers to the back stream.
ZLib.Streams.Flush (File_Z, ZLib.Finish);
Print_Statistic ("Write compress",
ZLib.Streams.Write_Total_Out (File_Z));
ZLib.Streams.Close (File_Z);
Close (File_In);
Close (File_Back);
-- Compare reading from original file and from
-- decompression stream.
Open (File_In, In_File, In_File_Name);
Open (File_Back, In_File, Z_File_Name);
ZLib.Streams.Create
(Stream => File_Z,
Mode => ZLib.Streams.In_Stream,
Back => ZLib.Streams.Stream_Access
(Stream (File_Back)),
Back_Compressed => True,
Header => Header);
Stamp;
Compare_Streams (Stream (File_In).all, File_Z);
Print_Statistic ("Read decompress",
ZLib.Streams.Read_Total_Out (File_Z));
ZLib.Streams.Close (File_Z);
Close (File_In);
Close (File_Back);
-- Compress by reading from compression stream.
Open (File_Back, In_File, In_File_Name);
Create (File_Out, Out_File, Z_File_Name);
ZLib.Streams.Create
(Stream => File_Z,
Mode => ZLib.Streams.In_Stream,
Back => ZLib.Streams.Stream_Access
(Stream (File_Back)),
Back_Compressed => False,
Level => Level,
Strategy => Strategy,
Header => Header);
Stamp;
Copy_Streams
(Source => File_Z,
Target => Stream (File_Out).all);
Print_Statistic ("Read compress",
ZLib.Streams.Read_Total_Out (File_Z));
ZLib.Streams.Close (File_Z);
Close (File_Out);
Close (File_Back);
-- Decompress to decompression stream.
Open (File_In, In_File, Z_File_Name);
Create (File_Back, Out_File, Out_File_Name);
ZLib.Streams.Create
(Stream => File_Z,
Mode => ZLib.Streams.Out_Stream,
Back => ZLib.Streams.Stream_Access
(Stream (File_Back)),
Back_Compressed => False,
Header => Header);
Stamp;
Copy_Streams
(Source => Stream (File_In).all,
Target => File_Z);
Print_Statistic ("Write decompress",
ZLib.Streams.Write_Total_Out (File_Z));
ZLib.Streams.Close (File_Z);
Close (File_In);
Close (File_Back);
Compare_Files (In_File_Name, Out_File_Name);
end loop;
Ada.Text_IO.Put_Line (Count'Image (File_Size) & " Ok.");
exit when not Continuous;
File_Size := File_Size + 1;
end loop;
end Test;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: zlib-streams.adb,v 1.10 2004/05/31 10:53:40 vagul Exp $
with Ada.Unchecked_Deallocation;
package body ZLib.Streams is
-----------
-- Close --
-----------
procedure Close (Stream : in out Stream_Type) is
procedure Free is new Ada.Unchecked_Deallocation
(Stream_Element_Array, Buffer_Access);
begin
if Stream.Mode = Out_Stream or Stream.Mode = Duplex then
-- We should flush the data written by the writer.
Flush (Stream, Finish);
Close (Stream.Writer);
end if;
if Stream.Mode = In_Stream or Stream.Mode = Duplex then
Close (Stream.Reader);
Free (Stream.Buffer);
end if;
end Close;
------------
-- Create --
------------
procedure Create
(Stream : out Stream_Type;
Mode : in Stream_Mode;
Back : in Stream_Access;
Back_Compressed : in Boolean;
Level : in Compression_Level := Default_Compression;
Strategy : in Strategy_Type := Default_Strategy;
Header : in Header_Type := Default;
Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
:= Default_Buffer_Size;
Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
:= Default_Buffer_Size)
is
subtype Buffer_Subtype is Stream_Element_Array (1 .. Read_Buffer_Size);
procedure Init_Filter
(Filter : in out Filter_Type;
Compress : in Boolean);
-----------------
-- Init_Filter --
-----------------
procedure Init_Filter
(Filter : in out Filter_Type;
Compress : in Boolean) is
begin
if Compress then
Deflate_Init
(Filter, Level, Strategy, Header => Header);
else
Inflate_Init (Filter, Header => Header);
end if;
end Init_Filter;
begin
Stream.Back := Back;
Stream.Mode := Mode;
if Mode = Out_Stream or Mode = Duplex then
Init_Filter (Stream.Writer, Back_Compressed);
Stream.Buffer_Size := Write_Buffer_Size;
else
Stream.Buffer_Size := 0;
end if;
if Mode = In_Stream or Mode = Duplex then
Init_Filter (Stream.Reader, not Back_Compressed);
Stream.Buffer := new Buffer_Subtype;
Stream.Rest_First := Stream.Buffer'Last + 1;
Stream.Rest_Last := Stream.Buffer'Last;
end if;
end Create;
-----------
-- Flush --
-----------
procedure Flush
(Stream : in out Stream_Type;
Mode : in Flush_Mode := Sync_Flush)
is
Buffer : Stream_Element_Array (1 .. Stream.Buffer_Size);
Last : Stream_Element_Offset;
begin
loop
Flush (Stream.Writer, Buffer, Last, Mode);
Ada.Streams.Write (Stream.Back.all, Buffer (1 .. Last));
exit when Last < Buffer'Last;
end loop;
end Flush;
-------------
-- Is_Open --
-------------
function Is_Open (Stream : Stream_Type) return Boolean is
begin
return Is_Open (Stream.Reader) or else Is_Open (Stream.Writer);
end Is_Open;
----------
-- Read --
----------
procedure Read
(Stream : in out Stream_Type;
Item : out Stream_Element_Array;
Last : out Stream_Element_Offset)
is
procedure Read
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset);
----------
-- Read --
----------
procedure Read
(Item : out Stream_Element_Array;
Last : out Stream_Element_Offset) is
begin
Ada.Streams.Read (Stream.Back.all, Item, Last);
end Read;
procedure Read is new ZLib.Read
(Read => Read,
Buffer => Stream.Buffer.all,
Rest_First => Stream.Rest_First,
Rest_Last => Stream.Rest_Last);
begin
Read (Stream.Reader, Item, Last);
end Read;
-------------------
-- Read_Total_In --
-------------------
function Read_Total_In (Stream : in Stream_Type) return Count is
begin
return Total_In (Stream.Reader);
end Read_Total_In;
--------------------
-- Read_Total_Out --
--------------------
function Read_Total_Out (Stream : in Stream_Type) return Count is
begin
return Total_Out (Stream.Reader);
end Read_Total_Out;
-----------
-- Write --
-----------
procedure Write
(Stream : in out Stream_Type;
Item : in Stream_Element_Array)
is
procedure Write (Item : in Stream_Element_Array);
-----------
-- Write --
-----------
procedure Write (Item : in Stream_Element_Array) is
begin
Ada.Streams.Write (Stream.Back.all, Item);
end Write;
procedure Write is new ZLib.Write
(Write => Write,
Buffer_Size => Stream.Buffer_Size);
begin
Write (Stream.Writer, Item, No_Flush);
end Write;
--------------------
-- Write_Total_In --
--------------------
function Write_Total_In (Stream : in Stream_Type) return Count is
begin
return Total_In (Stream.Writer);
end Write_Total_In;
---------------------
-- Write_Total_Out --
---------------------
function Write_Total_Out (Stream : in Stream_Type) return Count is
begin
return Total_Out (Stream.Writer);
end Write_Total_Out;
end ZLib.Streams;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: zlib-streams.ads,v 1.12 2004/05/31 10:53:40 vagul Exp $
package ZLib.Streams is
type Stream_Mode is (In_Stream, Out_Stream, Duplex);
type Stream_Access is access all Ada.Streams.Root_Stream_Type'Class;
type Stream_Type is
new Ada.Streams.Root_Stream_Type with private;
procedure Read
(Stream : in out Stream_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset);
procedure Write
(Stream : in out Stream_Type;
Item : in Ada.Streams.Stream_Element_Array);
procedure Flush
(Stream : in out Stream_Type;
Mode : in Flush_Mode := Sync_Flush);
-- Flush the written data to the back stream,
-- all data placed to the compressor is flushing to the Back stream.
-- Should not be used until necessary, because it is decreasing
-- compression.
function Read_Total_In (Stream : in Stream_Type) return Count;
pragma Inline (Read_Total_In);
-- Return total number of bytes read from back stream so far.
function Read_Total_Out (Stream : in Stream_Type) return Count;
pragma Inline (Read_Total_Out);
-- Return total number of bytes read so far.
function Write_Total_In (Stream : in Stream_Type) return Count;
pragma Inline (Write_Total_In);
-- Return total number of bytes written so far.
function Write_Total_Out (Stream : in Stream_Type) return Count;
pragma Inline (Write_Total_Out);
-- Return total number of bytes written to the back stream.
procedure Create
(Stream : out Stream_Type;
Mode : in Stream_Mode;
Back : in Stream_Access;
Back_Compressed : in Boolean;
Level : in Compression_Level := Default_Compression;
Strategy : in Strategy_Type := Default_Strategy;
Header : in Header_Type := Default;
Read_Buffer_Size : in Ada.Streams.Stream_Element_Offset
:= Default_Buffer_Size;
Write_Buffer_Size : in Ada.Streams.Stream_Element_Offset
:= Default_Buffer_Size);
-- Create the Comression/Decompression stream.
-- If mode is In_Stream then Write operation is disabled.
-- If mode is Out_Stream then Read operation is disabled.
-- If Back_Compressed is true then
-- Data written to the Stream is compressing to the Back stream
-- and data read from the Stream is decompressed data from the Back stream.
-- If Back_Compressed is false then
-- Data written to the Stream is decompressing to the Back stream
-- and data read from the Stream is compressed data from the Back stream.
-- !!! When the Need_Header is False ZLib-Ada is using undocumented
-- ZLib 1.1.4 functionality to do not create/wait for ZLib headers.
function Is_Open (Stream : Stream_Type) return Boolean;
procedure Close (Stream : in out Stream_Type);
private
use Ada.Streams;
type Buffer_Access is access all Stream_Element_Array;
type Stream_Type
is new Root_Stream_Type with
record
Mode : Stream_Mode;
Buffer : Buffer_Access;
Rest_First : Stream_Element_Offset;
Rest_Last : Stream_Element_Offset;
-- Buffer for Read operation.
-- We need to have this buffer in the record
-- because not all read data from back stream
-- could be processed during the read operation.
Buffer_Size : Stream_Element_Offset;
-- Buffer size for write operation.
-- We do not need to have this buffer
-- in the record because all data could be
-- processed in the write operation.
Back : Stream_Access;
Reader : Filter_Type;
Writer : Filter_Type;
end record;
end ZLib.Streams;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $
package body ZLib.Thin is
ZLIB_VERSION : constant Chars_Ptr := zlibVersion;
Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit;
--------------
-- Avail_In --
--------------
function Avail_In (Strm : in Z_Stream) return UInt is
begin
return Strm.Avail_In;
end Avail_In;
---------------
-- Avail_Out --
---------------
function Avail_Out (Strm : in Z_Stream) return UInt is
begin
return Strm.Avail_Out;
end Avail_Out;
------------------
-- Deflate_Init --
------------------
function Deflate_Init
(strm : Z_Streamp;
level : Int;
method : Int;
windowBits : Int;
memLevel : Int;
strategy : Int)
return Int is
begin
return deflateInit2
(strm,
level,
method,
windowBits,
memLevel,
strategy,
ZLIB_VERSION,
Z_Stream_Size);
end Deflate_Init;
------------------
-- Inflate_Init --
------------------
function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is
begin
return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size);
end Inflate_Init;
------------------------
-- Last_Error_Message --
------------------------
function Last_Error_Message (Strm : in Z_Stream) return String is
use Interfaces.C.Strings;
begin
if Strm.msg = Null_Ptr then
return "";
else
return Value (Strm.msg);
end if;
end Last_Error_Message;
------------
-- Set_In --
------------
procedure Set_In
(Strm : in out Z_Stream;
Buffer : in Voidp;
Size : in UInt) is
begin
Strm.Next_In := Buffer;
Strm.Avail_In := Size;
end Set_In;
------------------
-- Set_Mem_Func --
------------------
procedure Set_Mem_Func
(Strm : in out Z_Stream;
Opaque : in Voidp;
Alloc : in alloc_func;
Free : in free_func) is
begin
Strm.opaque := Opaque;
Strm.zalloc := Alloc;
Strm.zfree := Free;
end Set_Mem_Func;
-------------
-- Set_Out --
-------------
procedure Set_Out
(Strm : in out Z_Stream;
Buffer : in Voidp;
Size : in UInt) is
begin
Strm.Next_Out := Buffer;
Strm.Avail_Out := Size;
end Set_Out;
--------------
-- Total_In --
--------------
function Total_In (Strm : in Z_Stream) return ULong is
begin
return Strm.Total_In;
end Total_In;
---------------
-- Total_Out --
---------------
function Total_Out (Strm : in Z_Stream) return ULong is
begin
return Strm.Total_Out;
end Total_Out;
end ZLib.Thin;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $
with Interfaces.C.Strings;
with System;
private package ZLib.Thin is
-- From zconf.h
MAX_MEM_LEVEL : constant := 9; -- zconf.h:105
-- zconf.h:105
MAX_WBITS : constant := 15; -- zconf.h:115
-- 32K LZ77 window
-- zconf.h:115
SEEK_SET : constant := 8#0000#; -- zconf.h:244
-- Seek from beginning of file.
-- zconf.h:244
SEEK_CUR : constant := 1; -- zconf.h:245
-- Seek from current position.
-- zconf.h:245
SEEK_END : constant := 2; -- zconf.h:246
-- Set file pointer to EOF plus "offset"
-- zconf.h:246
type Byte is new Interfaces.C.unsigned_char; -- 8 bits
-- zconf.h:214
type UInt is new Interfaces.C.unsigned; -- 16 bits or more
-- zconf.h:216
type Int is new Interfaces.C.int;
type ULong is new Interfaces.C.unsigned_long; -- 32 bits or more
-- zconf.h:217
subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
type ULong_Access is access ULong;
type Int_Access is access Int;
subtype Voidp is System.Address; -- zconf.h:232
subtype Byte_Access is Voidp;
Nul : constant Voidp := System.Null_Address;
-- end from zconf
Z_NO_FLUSH : constant := 8#0000#; -- zlib.h:125
-- zlib.h:125
Z_PARTIAL_FLUSH : constant := 1; -- zlib.h:126
-- will be removed, use
-- Z_SYNC_FLUSH instead
-- zlib.h:126
Z_SYNC_FLUSH : constant := 2; -- zlib.h:127
-- zlib.h:127
Z_FULL_FLUSH : constant := 3; -- zlib.h:128
-- zlib.h:128
Z_FINISH : constant := 4; -- zlib.h:129
-- zlib.h:129
Z_OK : constant := 8#0000#; -- zlib.h:132
-- zlib.h:132
Z_STREAM_END : constant := 1; -- zlib.h:133
-- zlib.h:133
Z_NEED_DICT : constant := 2; -- zlib.h:134
-- zlib.h:134
Z_ERRNO : constant := -1; -- zlib.h:135
-- zlib.h:135
Z_STREAM_ERROR : constant := -2; -- zlib.h:136
-- zlib.h:136
Z_DATA_ERROR : constant := -3; -- zlib.h:137
-- zlib.h:137
Z_MEM_ERROR : constant := -4; -- zlib.h:138
-- zlib.h:138
Z_BUF_ERROR : constant := -5; -- zlib.h:139
-- zlib.h:139
Z_VERSION_ERROR : constant := -6; -- zlib.h:140
-- zlib.h:140
Z_NO_COMPRESSION : constant := 8#0000#; -- zlib.h:145
-- zlib.h:145
Z_BEST_SPEED : constant := 1; -- zlib.h:146
-- zlib.h:146
Z_BEST_COMPRESSION : constant := 9; -- zlib.h:147
-- zlib.h:147
Z_DEFAULT_COMPRESSION : constant := -1; -- zlib.h:148
-- zlib.h:148
Z_FILTERED : constant := 1; -- zlib.h:151
-- zlib.h:151
Z_HUFFMAN_ONLY : constant := 2; -- zlib.h:152
-- zlib.h:152
Z_DEFAULT_STRATEGY : constant := 8#0000#; -- zlib.h:153
-- zlib.h:153
Z_BINARY : constant := 8#0000#; -- zlib.h:156
-- zlib.h:156
Z_ASCII : constant := 1; -- zlib.h:157
-- zlib.h:157
Z_UNKNOWN : constant := 2; -- zlib.h:158
-- zlib.h:158
Z_DEFLATED : constant := 8; -- zlib.h:161
-- zlib.h:161
Z_NULL : constant := 8#0000#; -- zlib.h:164
-- for initializing zalloc, zfree, opaque
-- zlib.h:164
type gzFile is new Voidp; -- zlib.h:646
type Z_Stream is private;
type Z_Streamp is access all Z_Stream; -- zlib.h:89
type alloc_func is access function
(Opaque : Voidp;
Items : UInt;
Size : UInt)
return Voidp; -- zlib.h:63
type free_func is access procedure (opaque : Voidp; address : Voidp);
function zlibVersion return Chars_Ptr;
function Deflate (strm : Z_Streamp; flush : Int) return Int;
function DeflateEnd (strm : Z_Streamp) return Int;
function Inflate (strm : Z_Streamp; flush : Int) return Int;
function InflateEnd (strm : Z_Streamp) return Int;
function deflateSetDictionary
(strm : Z_Streamp;
dictionary : Byte_Access;
dictLength : UInt)
return Int;
function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
-- zlib.h:478
function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
function deflateParams
(strm : Z_Streamp;
level : Int;
strategy : Int)
return Int; -- zlib.h:506
function inflateSetDictionary
(strm : Z_Streamp;
dictionary : Byte_Access;
dictLength : UInt)
return Int; -- zlib.h:548
function inflateSync (strm : Z_Streamp) return Int; -- zlib.h:565
function inflateReset (strm : Z_Streamp) return Int; -- zlib.h:580
function compress
(dest : Byte_Access;
destLen : ULong_Access;
source : Byte_Access;
sourceLen : ULong)
return Int; -- zlib.h:601
function compress2
(dest : Byte_Access;
destLen : ULong_Access;
source : Byte_Access;
sourceLen : ULong;
level : Int)
return Int; -- zlib.h:615
function uncompress
(dest : Byte_Access;
destLen : ULong_Access;
source : Byte_Access;
sourceLen : ULong)
return Int;
function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
function gzsetparams
(file : gzFile;
level : Int;
strategy : Int)
return Int;
function gzread
(file : gzFile;
buf : Voidp;
len : UInt)
return Int;
function gzwrite
(file : in gzFile;
buf : in Voidp;
len : in UInt)
return Int;
function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
function gzgets
(file : gzFile;
buf : Chars_Ptr;
len : Int)
return Chars_Ptr;
function gzputc (file : gzFile; char : Int) return Int;
function gzgetc (file : gzFile) return Int;
function gzflush (file : gzFile; flush : Int) return Int;
function gzseek
(file : gzFile;
offset : Int;
whence : Int)
return Int;
function gzrewind (file : gzFile) return Int;
function gztell (file : gzFile) return Int;
function gzeof (file : gzFile) return Int;
function gzclose (file : gzFile) return Int;
function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
function adler32
(adler : ULong;
buf : Byte_Access;
len : UInt)
return ULong;
function crc32
(crc : ULong;
buf : Byte_Access;
len : UInt)
return ULong;
function deflateInit
(strm : Z_Streamp;
level : Int;
version : Chars_Ptr;
stream_size : Int)
return Int;
function deflateInit2
(strm : Z_Streamp;
level : Int;
method : Int;
windowBits : Int;
memLevel : Int;
strategy : Int;
version : Chars_Ptr;
stream_size : Int)
return Int;
function Deflate_Init
(strm : Z_Streamp;
level : Int;
method : Int;
windowBits : Int;
memLevel : Int;
strategy : Int)
return Int;
pragma Inline (Deflate_Init);
function inflateInit
(strm : Z_Streamp;
version : Chars_Ptr;
stream_size : Int)
return Int;
function inflateInit2
(strm : in Z_Streamp;
windowBits : in Int;
version : in Chars_Ptr;
stream_size : in Int)
return Int;
function inflateBackInit
(strm : in Z_Streamp;
windowBits : in Int;
window : in Byte_Access;
version : in Chars_Ptr;
stream_size : in Int)
return Int;
-- Size of window have to be 2**windowBits.
function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
pragma Inline (Inflate_Init);
function zError (err : Int) return Chars_Ptr;
function inflateSyncPoint (z : Z_Streamp) return Int;
function get_crc_table return ULong_Access;
-- Interface to the available fields of the z_stream structure.
-- The application must update next_in and avail_in when avail_in has
-- dropped to zero. It must update next_out and avail_out when avail_out
-- has dropped to zero. The application must initialize zalloc, zfree and
-- opaque before calling the init function.
procedure Set_In
(Strm : in out Z_Stream;
Buffer : in Voidp;
Size : in UInt);
pragma Inline (Set_In);
procedure Set_Out
(Strm : in out Z_Stream;
Buffer : in Voidp;
Size : in UInt);
pragma Inline (Set_Out);
procedure Set_Mem_Func
(Strm : in out Z_Stream;
Opaque : in Voidp;
Alloc : in alloc_func;
Free : in free_func);
pragma Inline (Set_Mem_Func);
function Last_Error_Message (Strm : in Z_Stream) return String;
pragma Inline (Last_Error_Message);
function Avail_Out (Strm : in Z_Stream) return UInt;
pragma Inline (Avail_Out);
function Avail_In (Strm : in Z_Stream) return UInt;
pragma Inline (Avail_In);
function Total_In (Strm : in Z_Stream) return ULong;
pragma Inline (Total_In);
function Total_Out (Strm : in Z_Stream) return ULong;
pragma Inline (Total_Out);
function inflateCopy
(dest : in Z_Streamp;
Source : in Z_Streamp)
return Int;
function compressBound (Source_Len : in ULong) return ULong;
function deflateBound
(Strm : in Z_Streamp;
Source_Len : in ULong)
return ULong;
function gzungetc (C : in Int; File : in gzFile) return Int;
function zlibCompileFlags return ULong;
private
type Z_Stream is record -- zlib.h:68
Next_In : Voidp := Nul; -- next input byte
Avail_In : UInt := 0; -- number of bytes available at next_in
Total_In : ULong := 0; -- total nb of input bytes read so far
Next_Out : Voidp := Nul; -- next output byte should be put there
Avail_Out : UInt := 0; -- remaining free space at next_out
Total_Out : ULong := 0; -- total nb of bytes output so far
msg : Chars_Ptr; -- last error message, NULL if no error
state : Voidp; -- not visible by applications
zalloc : alloc_func := null; -- used to allocate the internal state
zfree : free_func := null; -- used to free the internal state
opaque : Voidp; -- private data object passed to
-- zalloc and zfree
data_type : Int; -- best guess about the data type:
-- ascii or binary
adler : ULong; -- adler32 value of the uncompressed
-- data
reserved : ULong; -- reserved for future use
end record;
pragma Convention (C, Z_Stream);
pragma Import (C, zlibVersion, "zlibVersion");
pragma Import (C, Deflate, "deflate");
pragma Import (C, DeflateEnd, "deflateEnd");
pragma Import (C, Inflate, "inflate");
pragma Import (C, InflateEnd, "inflateEnd");
pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
pragma Import (C, deflateCopy, "deflateCopy");
pragma Import (C, deflateReset, "deflateReset");
pragma Import (C, deflateParams, "deflateParams");
pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
pragma Import (C, inflateSync, "inflateSync");
pragma Import (C, inflateReset, "inflateReset");
pragma Import (C, compress, "compress");
pragma Import (C, compress2, "compress2");
pragma Import (C, uncompress, "uncompress");
pragma Import (C, gzopen, "gzopen");
pragma Import (C, gzdopen, "gzdopen");
pragma Import (C, gzsetparams, "gzsetparams");
pragma Import (C, gzread, "gzread");
pragma Import (C, gzwrite, "gzwrite");
pragma Import (C, gzprintf, "gzprintf");
pragma Import (C, gzputs, "gzputs");
pragma Import (C, gzgets, "gzgets");
pragma Import (C, gzputc, "gzputc");
pragma Import (C, gzgetc, "gzgetc");
pragma Import (C, gzflush, "gzflush");
pragma Import (C, gzseek, "gzseek");
pragma Import (C, gzrewind, "gzrewind");
pragma Import (C, gztell, "gztell");
pragma Import (C, gzeof, "gzeof");
pragma Import (C, gzclose, "gzclose");
pragma Import (C, gzerror, "gzerror");
pragma Import (C, adler32, "adler32");
pragma Import (C, crc32, "crc32");
pragma Import (C, deflateInit, "deflateInit_");
pragma Import (C, inflateInit, "inflateInit_");
pragma Import (C, deflateInit2, "deflateInit2_");
pragma Import (C, inflateInit2, "inflateInit2_");
pragma Import (C, zError, "zError");
pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
pragma Import (C, get_crc_table, "get_crc_table");
-- since zlib 1.2.0:
pragma Import (C, inflateCopy, "inflateCopy");
pragma Import (C, compressBound, "compressBound");
pragma Import (C, deflateBound, "deflateBound");
pragma Import (C, gzungetc, "gzungetc");
pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
pragma Import (C, inflateBackInit, "inflateBackInit_");
-- I stopped binding the inflateBack routines, because realize that
-- it does not support zlib and gzip headers for now, and have no
-- symmetric deflateBack routines.
-- ZLib-Ada is symmetric regarding deflate/inflate data transformation
-- and has a similar generic callback interface for the
-- deflate/inflate transformation based on the regular Deflate/Inflate
-- routines.
-- pragma Import (C, inflateBack, "inflateBack");
-- pragma Import (C, inflateBackEnd, "inflateBackEnd");
end ZLib.Thin;

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----------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
-- --
-- Open source license information is in the zlib.ads file. --
----------------------------------------------------------------
-- $Id: zlib.adb,v 1.31 2004/09/06 06:53:19 vagul Exp $
with Ada.Exceptions;
with Ada.Unchecked_Conversion;
with Ada.Unchecked_Deallocation;
with Interfaces.C.Strings;
with ZLib.Thin;
package body ZLib is
use type Thin.Int;
type Z_Stream is new Thin.Z_Stream;
type Return_Code_Enum is
(OK,
STREAM_END,
NEED_DICT,
ERRNO,
STREAM_ERROR,
DATA_ERROR,
MEM_ERROR,
BUF_ERROR,
VERSION_ERROR);
type Flate_Step_Function is access
function (Strm : in Thin.Z_Streamp; Flush : in Thin.Int) return Thin.Int;
pragma Convention (C, Flate_Step_Function);
type Flate_End_Function is access
function (Ctrm : in Thin.Z_Streamp) return Thin.Int;
pragma Convention (C, Flate_End_Function);
type Flate_Type is record
Step : Flate_Step_Function;
Done : Flate_End_Function;
end record;
subtype Footer_Array is Stream_Element_Array (1 .. 8);
Simple_GZip_Header : constant Stream_Element_Array (1 .. 10)
:= (16#1f#, 16#8b#, -- Magic header
16#08#, -- Z_DEFLATED
16#00#, -- Flags
16#00#, 16#00#, 16#00#, 16#00#, -- Time
16#00#, -- XFlags
16#03# -- OS code
);
-- The simplest gzip header is not for informational, but just for
-- gzip format compatibility.
-- Note that some code below is using assumption
-- Simple_GZip_Header'Last > Footer_Array'Last, so do not make
-- Simple_GZip_Header'Last <= Footer_Array'Last.
Return_Code : constant array (Thin.Int range <>) of Return_Code_Enum
:= (0 => OK,
1 => STREAM_END,
2 => NEED_DICT,
-1 => ERRNO,
-2 => STREAM_ERROR,
-3 => DATA_ERROR,
-4 => MEM_ERROR,
-5 => BUF_ERROR,
-6 => VERSION_ERROR);
Flate : constant array (Boolean) of Flate_Type
:= (True => (Step => Thin.Deflate'Access,
Done => Thin.DeflateEnd'Access),
False => (Step => Thin.Inflate'Access,
Done => Thin.InflateEnd'Access));
Flush_Finish : constant array (Boolean) of Flush_Mode
:= (True => Finish, False => No_Flush);
procedure Raise_Error (Stream : in Z_Stream);
pragma Inline (Raise_Error);
procedure Raise_Error (Message : in String);
pragma Inline (Raise_Error);
procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int);
procedure Free is new Ada.Unchecked_Deallocation
(Z_Stream, Z_Stream_Access);
function To_Thin_Access is new Ada.Unchecked_Conversion
(Z_Stream_Access, Thin.Z_Streamp);
procedure Translate_GZip
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode);
-- Separate translate routine for make gzip header.
procedure Translate_Auto
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode);
-- translate routine without additional headers.
-----------------
-- Check_Error --
-----------------
procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int) is
use type Thin.Int;
begin
if Code /= Thin.Z_OK then
Raise_Error
(Return_Code_Enum'Image (Return_Code (Code))
& ": " & Last_Error_Message (Stream));
end if;
end Check_Error;
-----------
-- Close --
-----------
procedure Close
(Filter : in out Filter_Type;
Ignore_Error : in Boolean := False)
is
Code : Thin.Int;
begin
if not Ignore_Error and then not Is_Open (Filter) then
raise Status_Error;
end if;
Code := Flate (Filter.Compression).Done (To_Thin_Access (Filter.Strm));
if Ignore_Error or else Code = Thin.Z_OK then
Free (Filter.Strm);
else
declare
Error_Message : constant String
:= Last_Error_Message (Filter.Strm.all);
begin
Free (Filter.Strm);
Ada.Exceptions.Raise_Exception
(ZLib_Error'Identity,
Return_Code_Enum'Image (Return_Code (Code))
& ": " & Error_Message);
end;
end if;
end Close;
-----------
-- CRC32 --
-----------
function CRC32
(CRC : in Unsigned_32;
Data : in Ada.Streams.Stream_Element_Array)
return Unsigned_32
is
use Thin;
begin
return Unsigned_32 (crc32 (ULong (CRC),
Data'Address,
Data'Length));
end CRC32;
procedure CRC32
(CRC : in out Unsigned_32;
Data : in Ada.Streams.Stream_Element_Array) is
begin
CRC := CRC32 (CRC, Data);
end CRC32;
------------------
-- Deflate_Init --
------------------
procedure Deflate_Init
(Filter : in out Filter_Type;
Level : in Compression_Level := Default_Compression;
Strategy : in Strategy_Type := Default_Strategy;
Method : in Compression_Method := Deflated;
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
Memory_Level : in Memory_Level_Type := Default_Memory_Level;
Header : in Header_Type := Default)
is
use type Thin.Int;
Win_Bits : Thin.Int := Thin.Int (Window_Bits);
begin
if Is_Open (Filter) then
raise Status_Error;
end if;
-- We allow ZLib to make header only in case of default header type.
-- Otherwise we would either do header by ourselfs, or do not do
-- header at all.
if Header = None or else Header = GZip then
Win_Bits := -Win_Bits;
end if;
-- For the GZip CRC calculation and make headers.
if Header = GZip then
Filter.CRC := 0;
Filter.Offset := Simple_GZip_Header'First;
else
Filter.Offset := Simple_GZip_Header'Last + 1;
end if;
Filter.Strm := new Z_Stream;
Filter.Compression := True;
Filter.Stream_End := False;
Filter.Header := Header;
if Thin.Deflate_Init
(To_Thin_Access (Filter.Strm),
Level => Thin.Int (Level),
method => Thin.Int (Method),
windowBits => Win_Bits,
memLevel => Thin.Int (Memory_Level),
strategy => Thin.Int (Strategy)) /= Thin.Z_OK
then
Raise_Error (Filter.Strm.all);
end if;
end Deflate_Init;
-----------
-- Flush --
-----------
procedure Flush
(Filter : in out Filter_Type;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode)
is
No_Data : Stream_Element_Array := (1 .. 0 => 0);
Last : Stream_Element_Offset;
begin
Translate (Filter, No_Data, Last, Out_Data, Out_Last, Flush);
end Flush;
-----------------------
-- Generic_Translate --
-----------------------
procedure Generic_Translate
(Filter : in out ZLib.Filter_Type;
In_Buffer_Size : in Integer := Default_Buffer_Size;
Out_Buffer_Size : in Integer := Default_Buffer_Size)
is
In_Buffer : Stream_Element_Array
(1 .. Stream_Element_Offset (In_Buffer_Size));
Out_Buffer : Stream_Element_Array
(1 .. Stream_Element_Offset (Out_Buffer_Size));
Last : Stream_Element_Offset;
In_Last : Stream_Element_Offset;
In_First : Stream_Element_Offset;
Out_Last : Stream_Element_Offset;
begin
Main : loop
Data_In (In_Buffer, Last);
In_First := In_Buffer'First;
loop
Translate
(Filter => Filter,
In_Data => In_Buffer (In_First .. Last),
In_Last => In_Last,
Out_Data => Out_Buffer,
Out_Last => Out_Last,
Flush => Flush_Finish (Last < In_Buffer'First));
if Out_Buffer'First <= Out_Last then
Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
end if;
exit Main when Stream_End (Filter);
-- The end of in buffer.
exit when In_Last = Last;
In_First := In_Last + 1;
end loop;
end loop Main;
end Generic_Translate;
------------------
-- Inflate_Init --
------------------
procedure Inflate_Init
(Filter : in out Filter_Type;
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
Header : in Header_Type := Default)
is
use type Thin.Int;
Win_Bits : Thin.Int := Thin.Int (Window_Bits);
procedure Check_Version;
-- Check the latest header types compatibility.
procedure Check_Version is
begin
if Version <= "1.1.4" then
Raise_Error
("Inflate header type " & Header_Type'Image (Header)
& " incompatible with ZLib version " & Version);
end if;
end Check_Version;
begin
if Is_Open (Filter) then
raise Status_Error;
end if;
case Header is
when None =>
Check_Version;
-- Inflate data without headers determined
-- by negative Win_Bits.
Win_Bits := -Win_Bits;
when GZip =>
Check_Version;
-- Inflate gzip data defined by flag 16.
Win_Bits := Win_Bits + 16;
when Auto =>
Check_Version;
-- Inflate with automatic detection
-- of gzip or native header defined by flag 32.
Win_Bits := Win_Bits + 32;
when Default => null;
end case;
Filter.Strm := new Z_Stream;
Filter.Compression := False;
Filter.Stream_End := False;
Filter.Header := Header;
if Thin.Inflate_Init
(To_Thin_Access (Filter.Strm), Win_Bits) /= Thin.Z_OK
then
Raise_Error (Filter.Strm.all);
end if;
end Inflate_Init;
-------------
-- Is_Open --
-------------
function Is_Open (Filter : in Filter_Type) return Boolean is
begin
return Filter.Strm /= null;
end Is_Open;
-----------------
-- Raise_Error --
-----------------
procedure Raise_Error (Message : in String) is
begin
Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
end Raise_Error;
procedure Raise_Error (Stream : in Z_Stream) is
begin
Raise_Error (Last_Error_Message (Stream));
end Raise_Error;
----------
-- Read --
----------
procedure Read
(Filter : in out Filter_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode := No_Flush)
is
In_Last : Stream_Element_Offset;
Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
V_Flush : Flush_Mode := Flush;
begin
pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
loop
if Rest_Last = Buffer'First - 1 then
V_Flush := Finish;
elsif Rest_First > Rest_Last then
Read (Buffer, Rest_Last);
Rest_First := Buffer'First;
if Rest_Last < Buffer'First then
V_Flush := Finish;
end if;
end if;
Translate
(Filter => Filter,
In_Data => Buffer (Rest_First .. Rest_Last),
In_Last => In_Last,
Out_Data => Item (Item_First .. Item'Last),
Out_Last => Last,
Flush => V_Flush);
Rest_First := In_Last + 1;
exit when Stream_End (Filter)
or else Last = Item'Last
or else (Last >= Item'First and then Allow_Read_Some);
Item_First := Last + 1;
end loop;
end Read;
----------------
-- Stream_End --
----------------
function Stream_End (Filter : in Filter_Type) return Boolean is
begin
if Filter.Header = GZip and Filter.Compression then
return Filter.Stream_End
and then Filter.Offset = Footer_Array'Last + 1;
else
return Filter.Stream_End;
end if;
end Stream_End;
--------------
-- Total_In --
--------------
function Total_In (Filter : in Filter_Type) return Count is
begin
return Count (Thin.Total_In (To_Thin_Access (Filter.Strm).all));
end Total_In;
---------------
-- Total_Out --
---------------
function Total_Out (Filter : in Filter_Type) return Count is
begin
return Count (Thin.Total_Out (To_Thin_Access (Filter.Strm).all));
end Total_Out;
---------------
-- Translate --
---------------
procedure Translate
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode) is
begin
if Filter.Header = GZip and then Filter.Compression then
Translate_GZip
(Filter => Filter,
In_Data => In_Data,
In_Last => In_Last,
Out_Data => Out_Data,
Out_Last => Out_Last,
Flush => Flush);
else
Translate_Auto
(Filter => Filter,
In_Data => In_Data,
In_Last => In_Last,
Out_Data => Out_Data,
Out_Last => Out_Last,
Flush => Flush);
end if;
end Translate;
--------------------
-- Translate_Auto --
--------------------
procedure Translate_Auto
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode)
is
use type Thin.Int;
Code : Thin.Int;
begin
if not Is_Open (Filter) then
raise Status_Error;
end if;
if Out_Data'Length = 0 and then In_Data'Length = 0 then
raise Constraint_Error;
end if;
Set_Out (Filter.Strm.all, Out_Data'Address, Out_Data'Length);
Set_In (Filter.Strm.all, In_Data'Address, In_Data'Length);
Code := Flate (Filter.Compression).Step
(To_Thin_Access (Filter.Strm),
Thin.Int (Flush));
if Code = Thin.Z_STREAM_END then
Filter.Stream_End := True;
else
Check_Error (Filter.Strm.all, Code);
end if;
In_Last := In_Data'Last
- Stream_Element_Offset (Avail_In (Filter.Strm.all));
Out_Last := Out_Data'Last
- Stream_Element_Offset (Avail_Out (Filter.Strm.all));
end Translate_Auto;
--------------------
-- Translate_GZip --
--------------------
procedure Translate_GZip
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode)
is
Out_First : Stream_Element_Offset;
procedure Add_Data (Data : in Stream_Element_Array);
-- Add data to stream from the Filter.Offset till necessary,
-- used for add gzip headr/footer.
procedure Put_32
(Item : in out Stream_Element_Array;
Data : in Unsigned_32);
pragma Inline (Put_32);
--------------
-- Add_Data --
--------------
procedure Add_Data (Data : in Stream_Element_Array) is
Data_First : Stream_Element_Offset renames Filter.Offset;
Data_Last : Stream_Element_Offset;
Data_Len : Stream_Element_Offset; -- -1
Out_Len : Stream_Element_Offset; -- -1
begin
Out_First := Out_Last + 1;
if Data_First > Data'Last then
return;
end if;
Data_Len := Data'Last - Data_First;
Out_Len := Out_Data'Last - Out_First;
if Data_Len <= Out_Len then
Out_Last := Out_First + Data_Len;
Data_Last := Data'Last;
else
Out_Last := Out_Data'Last;
Data_Last := Data_First + Out_Len;
end if;
Out_Data (Out_First .. Out_Last) := Data (Data_First .. Data_Last);
Data_First := Data_Last + 1;
Out_First := Out_Last + 1;
end Add_Data;
------------
-- Put_32 --
------------
procedure Put_32
(Item : in out Stream_Element_Array;
Data : in Unsigned_32)
is
D : Unsigned_32 := Data;
begin
for J in Item'First .. Item'First + 3 loop
Item (J) := Stream_Element (D and 16#FF#);
D := Shift_Right (D, 8);
end loop;
end Put_32;
begin
Out_Last := Out_Data'First - 1;
if not Filter.Stream_End then
Add_Data (Simple_GZip_Header);
Translate_Auto
(Filter => Filter,
In_Data => In_Data,
In_Last => In_Last,
Out_Data => Out_Data (Out_First .. Out_Data'Last),
Out_Last => Out_Last,
Flush => Flush);
CRC32 (Filter.CRC, In_Data (In_Data'First .. In_Last));
end if;
if Filter.Stream_End and then Out_Last <= Out_Data'Last then
-- This detection method would work only when
-- Simple_GZip_Header'Last > Footer_Array'Last
if Filter.Offset = Simple_GZip_Header'Last + 1 then
Filter.Offset := Footer_Array'First;
end if;
declare
Footer : Footer_Array;
begin
Put_32 (Footer, Filter.CRC);
Put_32 (Footer (Footer'First + 4 .. Footer'Last),
Unsigned_32 (Total_In (Filter)));
Add_Data (Footer);
end;
end if;
end Translate_GZip;
-------------
-- Version --
-------------
function Version return String is
begin
return Interfaces.C.Strings.Value (Thin.zlibVersion);
end Version;
-----------
-- Write --
-----------
procedure Write
(Filter : in out Filter_Type;
Item : in Ada.Streams.Stream_Element_Array;
Flush : in Flush_Mode := No_Flush)
is
Buffer : Stream_Element_Array (1 .. Buffer_Size);
In_Last : Stream_Element_Offset;
Out_Last : Stream_Element_Offset;
In_First : Stream_Element_Offset := Item'First;
begin
if Item'Length = 0 and Flush = No_Flush then
return;
end if;
loop
Translate
(Filter => Filter,
In_Data => Item (In_First .. Item'Last),
In_Last => In_Last,
Out_Data => Buffer,
Out_Last => Out_Last,
Flush => Flush);
if Out_Last >= Buffer'First then
Write (Buffer (1 .. Out_Last));
end if;
exit when In_Last = Item'Last or Stream_End (Filter);
In_First := In_Last + 1;
end loop;
end Write;
end ZLib;

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------------------------------------------------------------------------------
-- ZLib for Ada thick binding. --
-- --
-- Copyright (C) 2002-2004 Dmitriy Anisimkov --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, or (at --
-- your option) any later version. --
-- --
-- This library is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
-- $Id: zlib.ads,v 1.26 2004/09/06 06:53:19 vagul Exp $
with Ada.Streams;
with Interfaces;
package ZLib is
ZLib_Error : exception;
Status_Error : exception;
type Compression_Level is new Integer range -1 .. 9;
type Flush_Mode is private;
type Compression_Method is private;
type Window_Bits_Type is new Integer range 8 .. 15;
type Memory_Level_Type is new Integer range 1 .. 9;
type Unsigned_32 is new Interfaces.Unsigned_32;
type Strategy_Type is private;
type Header_Type is (None, Auto, Default, GZip);
-- Header type usage have a some limitation for inflate.
-- See comment for Inflate_Init.
subtype Count is Ada.Streams.Stream_Element_Count;
Default_Memory_Level : constant Memory_Level_Type := 8;
Default_Window_Bits : constant Window_Bits_Type := 15;
----------------------------------
-- Compression method constants --
----------------------------------
Deflated : constant Compression_Method;
-- Only one method allowed in this ZLib version
---------------------------------
-- Compression level constants --
---------------------------------
No_Compression : constant Compression_Level := 0;
Best_Speed : constant Compression_Level := 1;
Best_Compression : constant Compression_Level := 9;
Default_Compression : constant Compression_Level := -1;
--------------------------
-- Flush mode constants --
--------------------------
No_Flush : constant Flush_Mode;
-- Regular way for compression, no flush
Partial_Flush : constant Flush_Mode;
-- Will be removed, use Z_SYNC_FLUSH instead
Sync_Flush : constant Flush_Mode;
-- All pending output is flushed to the output buffer and the output
-- is aligned on a byte boundary, so that the decompressor can get all
-- input data available so far. (In particular avail_in is zero after the
-- call if enough output space has been provided before the call.)
-- Flushing may degrade compression for some compression algorithms and so
-- it should be used only when necessary.
Block_Flush : constant Flush_Mode;
-- Z_BLOCK requests that inflate() stop
-- if and when it get to the next deflate block boundary. When decoding the
-- zlib or gzip format, this will cause inflate() to return immediately
-- after the header and before the first block. When doing a raw inflate,
-- inflate() will go ahead and process the first block, and will return
-- when it gets to the end of that block, or when it runs out of data.
Full_Flush : constant Flush_Mode;
-- All output is flushed as with SYNC_FLUSH, and the compression state
-- is reset so that decompression can restart from this point if previous
-- compressed data has been damaged or if random access is desired. Using
-- Full_Flush too often can seriously degrade the compression.
Finish : constant Flush_Mode;
-- Just for tell the compressor that input data is complete.
------------------------------------
-- Compression strategy constants --
------------------------------------
-- RLE stategy could be used only in version 1.2.0 and later.
Filtered : constant Strategy_Type;
Huffman_Only : constant Strategy_Type;
RLE : constant Strategy_Type;
Default_Strategy : constant Strategy_Type;
Default_Buffer_Size : constant := 4096;
type Filter_Type is tagged limited private;
-- The filter is for compression and for decompression.
-- The usage of the type is depend of its initialization.
function Version return String;
pragma Inline (Version);
-- Return string representation of the ZLib version.
procedure Deflate_Init
(Filter : in out Filter_Type;
Level : in Compression_Level := Default_Compression;
Strategy : in Strategy_Type := Default_Strategy;
Method : in Compression_Method := Deflated;
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
Memory_Level : in Memory_Level_Type := Default_Memory_Level;
Header : in Header_Type := Default);
-- Compressor initialization.
-- When Header parameter is Auto or Default, then default zlib header
-- would be provided for compressed data.
-- When Header is GZip, then gzip header would be set instead of
-- default header.
-- When Header is None, no header would be set for compressed data.
procedure Inflate_Init
(Filter : in out Filter_Type;
Window_Bits : in Window_Bits_Type := Default_Window_Bits;
Header : in Header_Type := Default);
-- Decompressor initialization.
-- Default header type mean that ZLib default header is expecting in the
-- input compressed stream.
-- Header type None mean that no header is expecting in the input stream.
-- GZip header type mean that GZip header is expecting in the
-- input compressed stream.
-- Auto header type mean that header type (GZip or Native) would be
-- detected automatically in the input stream.
-- Note that header types parameter values None, GZip and Auto are
-- supported for inflate routine only in ZLib versions 1.2.0.2 and later.
-- Deflate_Init is supporting all header types.
function Is_Open (Filter : in Filter_Type) return Boolean;
pragma Inline (Is_Open);
-- Is the filter opened for compression or decompression.
procedure Close
(Filter : in out Filter_Type;
Ignore_Error : in Boolean := False);
-- Closing the compression or decompressor.
-- If stream is closing before the complete and Ignore_Error is False,
-- The exception would be raised.
generic
with procedure Data_In
(Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset);
with procedure Data_Out
(Item : in Ada.Streams.Stream_Element_Array);
procedure Generic_Translate
(Filter : in out Filter_Type;
In_Buffer_Size : in Integer := Default_Buffer_Size;
Out_Buffer_Size : in Integer := Default_Buffer_Size);
-- Compress/decompress data fetch from Data_In routine and pass the result
-- to the Data_Out routine. User should provide Data_In and Data_Out
-- for compression/decompression data flow.
-- Compression or decompression depend on Filter initialization.
function Total_In (Filter : in Filter_Type) return Count;
pragma Inline (Total_In);
-- Returns total number of input bytes read so far
function Total_Out (Filter : in Filter_Type) return Count;
pragma Inline (Total_Out);
-- Returns total number of bytes output so far
function CRC32
(CRC : in Unsigned_32;
Data : in Ada.Streams.Stream_Element_Array)
return Unsigned_32;
pragma Inline (CRC32);
-- Compute CRC32, it could be necessary for make gzip format
procedure CRC32
(CRC : in out Unsigned_32;
Data : in Ada.Streams.Stream_Element_Array);
pragma Inline (CRC32);
-- Compute CRC32, it could be necessary for make gzip format
-------------------------------------------------
-- Below is more complex low level routines. --
-------------------------------------------------
procedure Translate
(Filter : in out Filter_Type;
In_Data : in Ada.Streams.Stream_Element_Array;
In_Last : out Ada.Streams.Stream_Element_Offset;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode);
-- Compress/decompress the In_Data buffer and place the result into
-- Out_Data. In_Last is the index of last element from In_Data accepted by
-- the Filter. Out_Last is the last element of the received data from
-- Filter. To tell the filter that incoming data are complete put the
-- Flush parameter to Finish.
function Stream_End (Filter : in Filter_Type) return Boolean;
pragma Inline (Stream_End);
-- Return the true when the stream is complete.
procedure Flush
(Filter : in out Filter_Type;
Out_Data : out Ada.Streams.Stream_Element_Array;
Out_Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode);
pragma Inline (Flush);
-- Flushing the data from the compressor.
generic
with procedure Write
(Item : in Ada.Streams.Stream_Element_Array);
-- User should provide this routine for accept
-- compressed/decompressed data.
Buffer_Size : in Ada.Streams.Stream_Element_Offset
:= Default_Buffer_Size;
-- Buffer size for Write user routine.
procedure Write
(Filter : in out Filter_Type;
Item : in Ada.Streams.Stream_Element_Array;
Flush : in Flush_Mode := No_Flush);
-- Compress/Decompress data from Item to the generic parameter procedure
-- Write. Output buffer size could be set in Buffer_Size generic parameter.
generic
with procedure Read
(Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset);
-- User should provide data for compression/decompression
-- thru this routine.
Buffer : in out Ada.Streams.Stream_Element_Array;
-- Buffer for keep remaining data from the previous
-- back read.
Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
-- Rest_First have to be initialized to Buffer'Last + 1
-- Rest_Last have to be initialized to Buffer'Last
-- before usage.
Allow_Read_Some : in Boolean := False;
-- Is it allowed to return Last < Item'Last before end of data.
procedure Read
(Filter : in out Filter_Type;
Item : out Ada.Streams.Stream_Element_Array;
Last : out Ada.Streams.Stream_Element_Offset;
Flush : in Flush_Mode := No_Flush);
-- Compress/Decompress data from generic parameter procedure Read to the
-- Item. User should provide Buffer and initialized Rest_First, Rest_Last
-- indicators. If Allow_Read_Some is True, Read routines could return
-- Last < Item'Last only at end of stream.
private
use Ada.Streams;
pragma Assert (Ada.Streams.Stream_Element'Size = 8);
pragma Assert (Ada.Streams.Stream_Element'Modulus = 2**8);
type Flush_Mode is new Integer range 0 .. 5;
type Compression_Method is new Integer range 8 .. 8;
type Strategy_Type is new Integer range 0 .. 3;
No_Flush : constant Flush_Mode := 0;
Partial_Flush : constant Flush_Mode := 1;
Sync_Flush : constant Flush_Mode := 2;
Full_Flush : constant Flush_Mode := 3;
Finish : constant Flush_Mode := 4;
Block_Flush : constant Flush_Mode := 5;
Filtered : constant Strategy_Type := 1;
Huffman_Only : constant Strategy_Type := 2;
RLE : constant Strategy_Type := 3;
Default_Strategy : constant Strategy_Type := 0;
Deflated : constant Compression_Method := 8;
type Z_Stream;
type Z_Stream_Access is access all Z_Stream;
type Filter_Type is tagged limited record
Strm : Z_Stream_Access;
Compression : Boolean;
Stream_End : Boolean;
Header : Header_Type;
CRC : Unsigned_32;
Offset : Stream_Element_Offset;
-- Offset for gzip header/footer output.
end record;
end ZLib;

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libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/ada/zlib.gpr Normal file
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project Zlib is
for Languages use ("Ada");
for Source_Dirs use (".");
for Object_Dir use ".";
for Main use ("test.adb", "mtest.adb", "read.adb", "buffer_demo");
package Compiler is
for Default_Switches ("ada") use ("-gnatwcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
end Compiler;
package Linker is
for Default_Switches ("ada") use ("-lz");
end Linker;
package Builder is
for Default_Switches ("ada") use ("-s", "-gnatQ");
end Builder;
end Zlib;

452
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/*
* match.S -- optimized version of longest_match()
* based on the similar work by Gilles Vollant, and Brian Raiter, written 1998
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the BSD License. Use by owners of Che Guevarra
* parafernalia is prohibited, where possible, and highly discouraged
* elsewhere.
*/
#ifndef NO_UNDERLINE
# define match_init _match_init
# define longest_match _longest_match
#endif
#define scanend ebx
#define scanendw bx
#define chainlenwmask edx /* high word: current chain len low word: s->wmask */
#define curmatch rsi
#define curmatchd esi
#define windowbestlen r8
#define scanalign r9
#define scanalignd r9d
#define window r10
#define bestlen r11
#define bestlend r11d
#define scanstart r12d
#define scanstartw r12w
#define scan r13
#define nicematch r14d
#define limit r15
#define limitd r15d
#define prev rcx
/*
* The 258 is a "magic number, not a parameter -- changing it
* breaks the hell loose
*/
#define MAX_MATCH (258)
#define MIN_MATCH (3)
#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
/* stack frame offsets */
#define LocalVarsSize (112)
#define _chainlenwmask ( 8-LocalVarsSize)(%rsp)
#define _windowbestlen (16-LocalVarsSize)(%rsp)
#define save_r14 (24-LocalVarsSize)(%rsp)
#define save_rsi (32-LocalVarsSize)(%rsp)
#define save_rbx (40-LocalVarsSize)(%rsp)
#define save_r12 (56-LocalVarsSize)(%rsp)
#define save_r13 (64-LocalVarsSize)(%rsp)
#define save_r15 (80-LocalVarsSize)(%rsp)
.globl match_init, longest_match
/*
* On AMD64 the first argument of a function (in our case -- the pointer to
* deflate_state structure) is passed in %rdi, hence our offsets below are
* all off of that.
*/
/* you can check the structure offset by running
#include <stdlib.h>
#include <stdio.h>
#include "deflate.h"
void print_depl()
{
deflate_state ds;
deflate_state *s=&ds;
printf("size pointer=%u\n",(int)sizeof(void*));
printf("#define dsWSize (%3u)(%%rdi)\n",(int)(((char*)&(s->w_size))-((char*)s)));
printf("#define dsWMask (%3u)(%%rdi)\n",(int)(((char*)&(s->w_mask))-((char*)s)));
printf("#define dsWindow (%3u)(%%rdi)\n",(int)(((char*)&(s->window))-((char*)s)));
printf("#define dsPrev (%3u)(%%rdi)\n",(int)(((char*)&(s->prev))-((char*)s)));
printf("#define dsMatchLen (%3u)(%%rdi)\n",(int)(((char*)&(s->match_length))-((char*)s)));
printf("#define dsPrevMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->prev_match))-((char*)s)));
printf("#define dsStrStart (%3u)(%%rdi)\n",(int)(((char*)&(s->strstart))-((char*)s)));
printf("#define dsMatchStart (%3u)(%%rdi)\n",(int)(((char*)&(s->match_start))-((char*)s)));
printf("#define dsLookahead (%3u)(%%rdi)\n",(int)(((char*)&(s->lookahead))-((char*)s)));
printf("#define dsPrevLen (%3u)(%%rdi)\n",(int)(((char*)&(s->prev_length))-((char*)s)));
printf("#define dsMaxChainLen (%3u)(%%rdi)\n",(int)(((char*)&(s->max_chain_length))-((char*)s)));
printf("#define dsGoodMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->good_match))-((char*)s)));
printf("#define dsNiceMatch (%3u)(%%rdi)\n",(int)(((char*)&(s->nice_match))-((char*)s)));
}
*/
/*
to compile for XCode 3.2 on MacOSX x86_64
- run "gcc -g -c -DXCODE_MAC_X64_STRUCTURE amd64-match.S"
*/
#ifndef CURRENT_LINX_XCODE_MAC_X64_STRUCTURE
#define dsWSize ( 68)(%rdi)
#define dsWMask ( 76)(%rdi)
#define dsWindow ( 80)(%rdi)
#define dsPrev ( 96)(%rdi)
#define dsMatchLen (144)(%rdi)
#define dsPrevMatch (148)(%rdi)
#define dsStrStart (156)(%rdi)
#define dsMatchStart (160)(%rdi)
#define dsLookahead (164)(%rdi)
#define dsPrevLen (168)(%rdi)
#define dsMaxChainLen (172)(%rdi)
#define dsGoodMatch (188)(%rdi)
#define dsNiceMatch (192)(%rdi)
#else
#ifndef STRUCT_OFFSET
# define STRUCT_OFFSET (0)
#endif
#define dsWSize ( 56 + STRUCT_OFFSET)(%rdi)
#define dsWMask ( 64 + STRUCT_OFFSET)(%rdi)
#define dsWindow ( 72 + STRUCT_OFFSET)(%rdi)
#define dsPrev ( 88 + STRUCT_OFFSET)(%rdi)
#define dsMatchLen (136 + STRUCT_OFFSET)(%rdi)
#define dsPrevMatch (140 + STRUCT_OFFSET)(%rdi)
#define dsStrStart (148 + STRUCT_OFFSET)(%rdi)
#define dsMatchStart (152 + STRUCT_OFFSET)(%rdi)
#define dsLookahead (156 + STRUCT_OFFSET)(%rdi)
#define dsPrevLen (160 + STRUCT_OFFSET)(%rdi)
#define dsMaxChainLen (164 + STRUCT_OFFSET)(%rdi)
#define dsGoodMatch (180 + STRUCT_OFFSET)(%rdi)
#define dsNiceMatch (184 + STRUCT_OFFSET)(%rdi)
#endif
.text
/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
longest_match:
/*
* Retrieve the function arguments. %curmatch will hold cur_match
* throughout the entire function (passed via rsi on amd64).
* rdi will hold the pointer to the deflate_state (first arg on amd64)
*/
mov %rsi, save_rsi
mov %rbx, save_rbx
mov %r12, save_r12
mov %r13, save_r13
mov %r14, save_r14
mov %r15, save_r15
/* uInt wmask = s->w_mask; */
/* unsigned chain_length = s->max_chain_length; */
/* if (s->prev_length >= s->good_match) { */
/* chain_length >>= 2; */
/* } */
movl dsPrevLen, %eax
movl dsGoodMatch, %ebx
cmpl %ebx, %eax
movl dsWMask, %eax
movl dsMaxChainLen, %chainlenwmask
jl LastMatchGood
shrl $2, %chainlenwmask
LastMatchGood:
/* chainlen is decremented once beforehand so that the function can */
/* use the sign flag instead of the zero flag for the exit test. */
/* It is then shifted into the high word, to make room for the wmask */
/* value, which it will always accompany. */
decl %chainlenwmask
shll $16, %chainlenwmask
orl %eax, %chainlenwmask
/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
movl dsNiceMatch, %eax
movl dsLookahead, %ebx
cmpl %eax, %ebx
jl LookaheadLess
movl %eax, %ebx
LookaheadLess: movl %ebx, %nicematch
/* register Bytef *scan = s->window + s->strstart; */
mov dsWindow, %window
movl dsStrStart, %limitd
lea (%limit, %window), %scan
/* Determine how many bytes the scan ptr is off from being */
/* dword-aligned. */
mov %scan, %scanalign
negl %scanalignd
andl $3, %scanalignd
/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
movl dsWSize, %eax
subl $MIN_LOOKAHEAD, %eax
xorl %ecx, %ecx
subl %eax, %limitd
cmovng %ecx, %limitd
/* int best_len = s->prev_length; */
movl dsPrevLen, %bestlend
/* Store the sum of s->window + best_len in %windowbestlen locally, and in memory. */
lea (%window, %bestlen), %windowbestlen
mov %windowbestlen, _windowbestlen
/* register ush scan_start = *(ushf*)scan; */
/* register ush scan_end = *(ushf*)(scan+best_len-1); */
/* Posf *prev = s->prev; */
movzwl (%scan), %scanstart
movzwl -1(%scan, %bestlen), %scanend
mov dsPrev, %prev
/* Jump into the main loop. */
movl %chainlenwmask, _chainlenwmask
jmp LoopEntry
.balign 16
/* do {
* match = s->window + cur_match;
* if (*(ushf*)(match+best_len-1) != scan_end ||
* *(ushf*)match != scan_start) continue;
* [...]
* } while ((cur_match = prev[cur_match & wmask]) > limit
* && --chain_length != 0);
*
* Here is the inner loop of the function. The function will spend the
* majority of its time in this loop, and majority of that time will
* be spent in the first ten instructions.
*/
LookupLoop:
andl %chainlenwmask, %curmatchd
movzwl (%prev, %curmatch, 2), %curmatchd
cmpl %limitd, %curmatchd
jbe LeaveNow
subl $0x00010000, %chainlenwmask
js LeaveNow
LoopEntry: cmpw -1(%windowbestlen, %curmatch), %scanendw
jne LookupLoop
cmpw %scanstartw, (%window, %curmatch)
jne LookupLoop
/* Store the current value of chainlen. */
movl %chainlenwmask, _chainlenwmask
/* %scan is the string under scrutiny, and %prev to the string we */
/* are hoping to match it up with. In actuality, %esi and %edi are */
/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
/* initialized to -(MAX_MATCH_8 - scanalign). */
mov $(-MAX_MATCH_8), %rdx
lea (%curmatch, %window), %windowbestlen
lea MAX_MATCH_8(%windowbestlen, %scanalign), %windowbestlen
lea MAX_MATCH_8(%scan, %scanalign), %prev
/* the prefetching below makes very little difference... */
prefetcht1 (%windowbestlen, %rdx)
prefetcht1 (%prev, %rdx)
/*
* Test the strings for equality, 8 bytes at a time. At the end,
* adjust %rdx so that it is offset to the exact byte that mismatched.
*
* It should be confessed that this loop usually does not represent
* much of the total running time. Replacing it with a more
* straightforward "rep cmpsb" would not drastically degrade
* performance -- unrolling it, for example, makes no difference.
*/
#undef USE_SSE /* works, but is 6-7% slower, than non-SSE... */
LoopCmps:
#ifdef USE_SSE
/* Preload the SSE registers */
movdqu (%windowbestlen, %rdx), %xmm1
movdqu (%prev, %rdx), %xmm2
pcmpeqb %xmm2, %xmm1
movdqu 16(%windowbestlen, %rdx), %xmm3
movdqu 16(%prev, %rdx), %xmm4
pcmpeqb %xmm4, %xmm3
movdqu 32(%windowbestlen, %rdx), %xmm5
movdqu 32(%prev, %rdx), %xmm6
pcmpeqb %xmm6, %xmm5
movdqu 48(%windowbestlen, %rdx), %xmm7
movdqu 48(%prev, %rdx), %xmm8
pcmpeqb %xmm8, %xmm7
/* Check the comparisions' results */
pmovmskb %xmm1, %rax
notw %ax
bsfw %ax, %ax
jnz LeaveLoopCmps
/* this is the only iteration of the loop with a possibility of having
incremented rdx by 0x108 (each loop iteration add 16*4 = 0x40
and (0x40*4)+8=0x108 */
add $8, %rdx
jz LenMaximum
add $8, %rdx
pmovmskb %xmm3, %rax
notw %ax
bsfw %ax, %ax
jnz LeaveLoopCmps
add $16, %rdx
pmovmskb %xmm5, %rax
notw %ax
bsfw %ax, %ax
jnz LeaveLoopCmps
add $16, %rdx
pmovmskb %xmm7, %rax
notw %ax
bsfw %ax, %ax
jnz LeaveLoopCmps
add $16, %rdx
jmp LoopCmps
LeaveLoopCmps: add %rax, %rdx
#else
mov (%windowbestlen, %rdx), %rax
xor (%prev, %rdx), %rax
jnz LeaveLoopCmps
mov 8(%windowbestlen, %rdx), %rax
xor 8(%prev, %rdx), %rax
jnz LeaveLoopCmps8
mov 16(%windowbestlen, %rdx), %rax
xor 16(%prev, %rdx), %rax
jnz LeaveLoopCmps16
add $24, %rdx
jnz LoopCmps
jmp LenMaximum
# if 0
/*
* This three-liner is tantalizingly simple, but bsf is a slow instruction,
* and the complicated alternative down below is quite a bit faster. Sad...
*/
LeaveLoopCmps: bsf %rax, %rax /* find the first non-zero bit */
shrl $3, %eax /* divide by 8 to get the byte */
add %rax, %rdx
# else
LeaveLoopCmps16:
add $8, %rdx
LeaveLoopCmps8:
add $8, %rdx
LeaveLoopCmps: testl $0xFFFFFFFF, %eax /* Check the first 4 bytes */
jnz Check16
add $4, %rdx
shr $32, %rax
Check16: testw $0xFFFF, %ax
jnz LenLower
add $2, %rdx
shrl $16, %eax
LenLower: subb $1, %al
adc $0, %rdx
# endif
#endif
/* Calculate the length of the match. If it is longer than MAX_MATCH, */
/* then automatically accept it as the best possible match and leave. */
lea (%prev, %rdx), %rax
sub %scan, %rax
cmpl $MAX_MATCH, %eax
jge LenMaximum
/* If the length of the match is not longer than the best match we */
/* have so far, then forget it and return to the lookup loop. */
cmpl %bestlend, %eax
jg LongerMatch
mov _windowbestlen, %windowbestlen
mov dsPrev, %prev
movl _chainlenwmask, %edx
jmp LookupLoop
/* s->match_start = cur_match; */
/* best_len = len; */
/* if (len >= nice_match) break; */
/* scan_end = *(ushf*)(scan+best_len-1); */
LongerMatch:
movl %eax, %bestlend
movl %curmatchd, dsMatchStart
cmpl %nicematch, %eax
jge LeaveNow
lea (%window, %bestlen), %windowbestlen
mov %windowbestlen, _windowbestlen
movzwl -1(%scan, %rax), %scanend
mov dsPrev, %prev
movl _chainlenwmask, %chainlenwmask
jmp LookupLoop
/* Accept the current string, with the maximum possible length. */
LenMaximum:
movl $MAX_MATCH, %bestlend
movl %curmatchd, dsMatchStart
/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
/* return s->lookahead; */
LeaveNow:
movl dsLookahead, %eax
cmpl %eax, %bestlend
cmovngl %bestlend, %eax
LookaheadRet:
/* Restore the registers and return from whence we came. */
mov save_rsi, %rsi
mov save_rbx, %rbx
mov save_r12, %r12
mov save_r13, %r13
mov save_r14, %r14
mov save_r15, %r15
ret
match_init: ret

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This is a patched version of zlib, modified to use
Pentium-Pro-optimized assembly code in the deflation algorithm. The
files changed/added by this patch are:
README.686
match.S
The speedup that this patch provides varies, depending on whether the
compiler used to build the original version of zlib falls afoul of the
PPro's speed traps. My own tests show a speedup of around 10-20% at
the default compression level, and 20-30% using -9, against a version
compiled using gcc 2.7.2.3. Your mileage may vary.
Note that this code has been tailored for the PPro/PII in particular,
and will not perform particuarly well on a Pentium.
If you are using an assembler other than GNU as, you will have to
translate match.S to use your assembler's syntax. (Have fun.)
Brian Raiter
breadbox@muppetlabs.com
April, 1998
Added for zlib 1.1.3:
The patches come from
http://www.muppetlabs.com/~breadbox/software/assembly.html
To compile zlib with this asm file, copy match.S to the zlib directory
then do:
CFLAGS="-O3 -DASMV" ./configure
make OBJA=match.o
Update:
I've been ignoring these assembly routines for years, believing that
gcc's generated code had caught up with it sometime around gcc 2.95
and the major rearchitecting of the Pentium 4. However, I recently
learned that, despite what I believed, this code still has some life
in it. On the Pentium 4 and AMD64 chips, it continues to run about 8%
faster than the code produced by gcc 4.1.
In acknowledgement of its continuing usefulness, I've altered the
license to match that of the rest of zlib. Share and Enjoy!
Brian Raiter
breadbox@muppetlabs.com
April, 2007

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/* match.S -- x86 assembly version of the zlib longest_match() function.
* Optimized for the Intel 686 chips (PPro and later).
*
* Copyright (C) 1998, 2007 Brian Raiter <breadbox@muppetlabs.com>
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the author be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#ifndef NO_UNDERLINE
#define match_init _match_init
#define longest_match _longest_match
#endif
#define MAX_MATCH (258)
#define MIN_MATCH (3)
#define MIN_LOOKAHEAD (MAX_MATCH + MIN_MATCH + 1)
#define MAX_MATCH_8 ((MAX_MATCH + 7) & ~7)
/* stack frame offsets */
#define chainlenwmask 0 /* high word: current chain len */
/* low word: s->wmask */
#define window 4 /* local copy of s->window */
#define windowbestlen 8 /* s->window + bestlen */
#define scanstart 16 /* first two bytes of string */
#define scanend 12 /* last two bytes of string */
#define scanalign 20 /* dword-misalignment of string */
#define nicematch 24 /* a good enough match size */
#define bestlen 28 /* size of best match so far */
#define scan 32 /* ptr to string wanting match */
#define LocalVarsSize (36)
/* saved ebx 36 */
/* saved edi 40 */
/* saved esi 44 */
/* saved ebp 48 */
/* return address 52 */
#define deflatestate 56 /* the function arguments */
#define curmatch 60
/* All the +zlib1222add offsets are due to the addition of fields
* in zlib in the deflate_state structure since the asm code was first written
* (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
* (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
* if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
*/
#define zlib1222add (8)
#define dsWSize (36+zlib1222add)
#define dsWMask (44+zlib1222add)
#define dsWindow (48+zlib1222add)
#define dsPrev (56+zlib1222add)
#define dsMatchLen (88+zlib1222add)
#define dsPrevMatch (92+zlib1222add)
#define dsStrStart (100+zlib1222add)
#define dsMatchStart (104+zlib1222add)
#define dsLookahead (108+zlib1222add)
#define dsPrevLen (112+zlib1222add)
#define dsMaxChainLen (116+zlib1222add)
#define dsGoodMatch (132+zlib1222add)
#define dsNiceMatch (136+zlib1222add)
.file "match.S"
.globl match_init, longest_match
.text
/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
.cfi_sections .debug_frame
longest_match:
.cfi_startproc
/* Save registers that the compiler may be using, and adjust %esp to */
/* make room for our stack frame. */
pushl %ebp
.cfi_def_cfa_offset 8
.cfi_offset ebp, -8
pushl %edi
.cfi_def_cfa_offset 12
pushl %esi
.cfi_def_cfa_offset 16
pushl %ebx
.cfi_def_cfa_offset 20
subl $LocalVarsSize, %esp
.cfi_def_cfa_offset LocalVarsSize+20
/* Retrieve the function arguments. %ecx will hold cur_match */
/* throughout the entire function. %edx will hold the pointer to the */
/* deflate_state structure during the function's setup (before */
/* entering the main loop). */
movl deflatestate(%esp), %edx
movl curmatch(%esp), %ecx
/* uInt wmask = s->w_mask; */
/* unsigned chain_length = s->max_chain_length; */
/* if (s->prev_length >= s->good_match) { */
/* chain_length >>= 2; */
/* } */
movl dsPrevLen(%edx), %eax
movl dsGoodMatch(%edx), %ebx
cmpl %ebx, %eax
movl dsWMask(%edx), %eax
movl dsMaxChainLen(%edx), %ebx
jl LastMatchGood
shrl $2, %ebx
LastMatchGood:
/* chainlen is decremented once beforehand so that the function can */
/* use the sign flag instead of the zero flag for the exit test. */
/* It is then shifted into the high word, to make room for the wmask */
/* value, which it will always accompany. */
decl %ebx
shll $16, %ebx
orl %eax, %ebx
movl %ebx, chainlenwmask(%esp)
/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; */
movl dsNiceMatch(%edx), %eax
movl dsLookahead(%edx), %ebx
cmpl %eax, %ebx
jl LookaheadLess
movl %eax, %ebx
LookaheadLess: movl %ebx, nicematch(%esp)
/* register Bytef *scan = s->window + s->strstart; */
movl dsWindow(%edx), %esi
movl %esi, window(%esp)
movl dsStrStart(%edx), %ebp
lea (%esi,%ebp), %edi
movl %edi, scan(%esp)
/* Determine how many bytes the scan ptr is off from being */
/* dword-aligned. */
movl %edi, %eax
negl %eax
andl $3, %eax
movl %eax, scanalign(%esp)
/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ? */
/* s->strstart - (IPos)MAX_DIST(s) : NIL; */
movl dsWSize(%edx), %eax
subl $MIN_LOOKAHEAD, %eax
subl %eax, %ebp
jg LimitPositive
xorl %ebp, %ebp
LimitPositive:
/* int best_len = s->prev_length; */
movl dsPrevLen(%edx), %eax
movl %eax, bestlen(%esp)
/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
addl %eax, %esi
movl %esi, windowbestlen(%esp)
/* register ush scan_start = *(ushf*)scan; */
/* register ush scan_end = *(ushf*)(scan+best_len-1); */
/* Posf *prev = s->prev; */
movzwl (%edi), %ebx
movl %ebx, scanstart(%esp)
movzwl -1(%edi,%eax), %ebx
movl %ebx, scanend(%esp)
movl dsPrev(%edx), %edi
/* Jump into the main loop. */
movl chainlenwmask(%esp), %edx
jmp LoopEntry
.balign 16
/* do {
* match = s->window + cur_match;
* if (*(ushf*)(match+best_len-1) != scan_end ||
* *(ushf*)match != scan_start) continue;
* [...]
* } while ((cur_match = prev[cur_match & wmask]) > limit
* && --chain_length != 0);
*
* Here is the inner loop of the function. The function will spend the
* majority of its time in this loop, and majority of that time will
* be spent in the first ten instructions.
*
* Within this loop:
* %ebx = scanend
* %ecx = curmatch
* %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
* %esi = windowbestlen - i.e., (window + bestlen)
* %edi = prev
* %ebp = limit
*/
LookupLoop:
andl %edx, %ecx
movzwl (%edi,%ecx,2), %ecx
cmpl %ebp, %ecx
jbe LeaveNow
subl $0x00010000, %edx
js LeaveNow
LoopEntry: movzwl -1(%esi,%ecx), %eax
cmpl %ebx, %eax
jnz LookupLoop
movl window(%esp), %eax
movzwl (%eax,%ecx), %eax
cmpl scanstart(%esp), %eax
jnz LookupLoop
/* Store the current value of chainlen. */
movl %edx, chainlenwmask(%esp)
/* Point %edi to the string under scrutiny, and %esi to the string we */
/* are hoping to match it up with. In actuality, %esi and %edi are */
/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is */
/* initialized to -(MAX_MATCH_8 - scanalign). */
movl window(%esp), %esi
movl scan(%esp), %edi
addl %ecx, %esi
movl scanalign(%esp), %eax
movl $(-MAX_MATCH_8), %edx
lea MAX_MATCH_8(%edi,%eax), %edi
lea MAX_MATCH_8(%esi,%eax), %esi
/* Test the strings for equality, 8 bytes at a time. At the end,
* adjust %edx so that it is offset to the exact byte that mismatched.
*
* We already know at this point that the first three bytes of the
* strings match each other, and they can be safely passed over before
* starting the compare loop. So what this code does is skip over 0-3
* bytes, as much as necessary in order to dword-align the %edi
* pointer. (%esi will still be misaligned three times out of four.)
*
* It should be confessed that this loop usually does not represent
* much of the total running time. Replacing it with a more
* straightforward "rep cmpsb" would not drastically degrade
* performance.
*/
LoopCmps:
movl (%esi,%edx), %eax
xorl (%edi,%edx), %eax
jnz LeaveLoopCmps
movl 4(%esi,%edx), %eax
xorl 4(%edi,%edx), %eax
jnz LeaveLoopCmps4
addl $8, %edx
jnz LoopCmps
jmp LenMaximum
LeaveLoopCmps4: addl $4, %edx
LeaveLoopCmps: testl $0x0000FFFF, %eax
jnz LenLower
addl $2, %edx
shrl $16, %eax
LenLower: subb $1, %al
adcl $0, %edx
/* Calculate the length of the match. If it is longer than MAX_MATCH, */
/* then automatically accept it as the best possible match and leave. */
lea (%edi,%edx), %eax
movl scan(%esp), %edi
subl %edi, %eax
cmpl $MAX_MATCH, %eax
jge LenMaximum
/* If the length of the match is not longer than the best match we */
/* have so far, then forget it and return to the lookup loop. */
movl deflatestate(%esp), %edx
movl bestlen(%esp), %ebx
cmpl %ebx, %eax
jg LongerMatch
movl windowbestlen(%esp), %esi
movl dsPrev(%edx), %edi
movl scanend(%esp), %ebx
movl chainlenwmask(%esp), %edx
jmp LookupLoop
/* s->match_start = cur_match; */
/* best_len = len; */
/* if (len >= nice_match) break; */
/* scan_end = *(ushf*)(scan+best_len-1); */
LongerMatch: movl nicematch(%esp), %ebx
movl %eax, bestlen(%esp)
movl %ecx, dsMatchStart(%edx)
cmpl %ebx, %eax
jge LeaveNow
movl window(%esp), %esi
addl %eax, %esi
movl %esi, windowbestlen(%esp)
movzwl -1(%edi,%eax), %ebx
movl dsPrev(%edx), %edi
movl %ebx, scanend(%esp)
movl chainlenwmask(%esp), %edx
jmp LookupLoop
/* Accept the current string, with the maximum possible length. */
LenMaximum: movl deflatestate(%esp), %edx
movl $MAX_MATCH, bestlen(%esp)
movl %ecx, dsMatchStart(%edx)
/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len; */
/* return s->lookahead; */
LeaveNow:
movl deflatestate(%esp), %edx
movl bestlen(%esp), %ebx
movl dsLookahead(%edx), %eax
cmpl %eax, %ebx
jg LookaheadRet
movl %ebx, %eax
LookaheadRet:
/* Restore the stack and return from whence we came. */
addl $LocalVarsSize, %esp
.cfi_def_cfa_offset 20
popl %ebx
.cfi_def_cfa_offset 16
popl %esi
.cfi_def_cfa_offset 12
popl %edi
.cfi_def_cfa_offset 8
popl %ebp
.cfi_def_cfa_offset 4
.cfi_endproc
match_init: ret

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blast: blast.c blast.h
cc -DTEST -o blast blast.c
test: blast
blast < test.pk | cmp - test.txt
clean:
rm -f blast blast.o

4
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/blast/README Normal file
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Read blast.h for purpose and usage.
Mark Adler
madler@alumni.caltech.edu

466
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/* blast.c
* Copyright (C) 2003, 2012, 2013 Mark Adler
* For conditions of distribution and use, see copyright notice in blast.h
* version 1.3, 24 Aug 2013
*
* blast.c decompresses data compressed by the PKWare Compression Library.
* This function provides functionality similar to the explode() function of
* the PKWare library, hence the name "blast".
*
* This decompressor is based on the excellent format description provided by
* Ben Rudiak-Gould in comp.compression on August 13, 2001. Interestingly, the
* example Ben provided in the post is incorrect. The distance 110001 should
* instead be 111000. When corrected, the example byte stream becomes:
*
* 00 04 82 24 25 8f 80 7f
*
* which decompresses to "AIAIAIAIAIAIA" (without the quotes).
*/
/*
* Change history:
*
* 1.0 12 Feb 2003 - First version
* 1.1 16 Feb 2003 - Fixed distance check for > 4 GB uncompressed data
* 1.2 24 Oct 2012 - Add note about using binary mode in stdio
* - Fix comparisons of differently signed integers
* 1.3 24 Aug 2013 - Return unused input from blast()
* - Fix test code to correctly report unused input
* - Enable the provision of initial input to blast()
*/
#include <stddef.h> /* for NULL */
#include <setjmp.h> /* for setjmp(), longjmp(), and jmp_buf */
#include "blast.h" /* prototype for blast() */
#define local static /* for local function definitions */
#define MAXBITS 13 /* maximum code length */
#define MAXWIN 4096 /* maximum window size */
/* input and output state */
struct state {
/* input state */
blast_in infun; /* input function provided by user */
void *inhow; /* opaque information passed to infun() */
unsigned char *in; /* next input location */
unsigned left; /* available input at in */
int bitbuf; /* bit buffer */
int bitcnt; /* number of bits in bit buffer */
/* input limit error return state for bits() and decode() */
jmp_buf env;
/* output state */
blast_out outfun; /* output function provided by user */
void *outhow; /* opaque information passed to outfun() */
unsigned next; /* index of next write location in out[] */
int first; /* true to check distances (for first 4K) */
unsigned char out[MAXWIN]; /* output buffer and sliding window */
};
/*
* Return need bits from the input stream. This always leaves less than
* eight bits in the buffer. bits() works properly for need == 0.
*
* Format notes:
*
* - Bits are stored in bytes from the least significant bit to the most
* significant bit. Therefore bits are dropped from the bottom of the bit
* buffer, using shift right, and new bytes are appended to the top of the
* bit buffer, using shift left.
*/
local int bits(struct state *s, int need)
{
int val; /* bit accumulator */
/* load at least need bits into val */
val = s->bitbuf;
while (s->bitcnt < need) {
if (s->left == 0) {
s->left = s->infun(s->inhow, &(s->in));
if (s->left == 0) longjmp(s->env, 1); /* out of input */
}
val |= (int)(*(s->in)++) << s->bitcnt; /* load eight bits */
s->left--;
s->bitcnt += 8;
}
/* drop need bits and update buffer, always zero to seven bits left */
s->bitbuf = val >> need;
s->bitcnt -= need;
/* return need bits, zeroing the bits above that */
return val & ((1 << need) - 1);
}
/*
* Huffman code decoding tables. count[1..MAXBITS] is the number of symbols of
* each length, which for a canonical code are stepped through in order.
* symbol[] are the symbol values in canonical order, where the number of
* entries is the sum of the counts in count[]. The decoding process can be
* seen in the function decode() below.
*/
struct huffman {
short *count; /* number of symbols of each length */
short *symbol; /* canonically ordered symbols */
};
/*
* Decode a code from the stream s using huffman table h. Return the symbol or
* a negative value if there is an error. If all of the lengths are zero, i.e.
* an empty code, or if the code is incomplete and an invalid code is received,
* then -9 is returned after reading MAXBITS bits.
*
* Format notes:
*
* - The codes as stored in the compressed data are bit-reversed relative to
* a simple integer ordering of codes of the same lengths. Hence below the
* bits are pulled from the compressed data one at a time and used to
* build the code value reversed from what is in the stream in order to
* permit simple integer comparisons for decoding.
*
* - The first code for the shortest length is all ones. Subsequent codes of
* the same length are simply integer decrements of the previous code. When
* moving up a length, a one bit is appended to the code. For a complete
* code, the last code of the longest length will be all zeros. To support
* this ordering, the bits pulled during decoding are inverted to apply the
* more "natural" ordering starting with all zeros and incrementing.
*/
local int decode(struct state *s, struct huffman *h)
{
int len; /* current number of bits in code */
int code; /* len bits being decoded */
int first; /* first code of length len */
int count; /* number of codes of length len */
int index; /* index of first code of length len in symbol table */
int bitbuf; /* bits from stream */
int left; /* bits left in next or left to process */
short *next; /* next number of codes */
bitbuf = s->bitbuf;
left = s->bitcnt;
code = first = index = 0;
len = 1;
next = h->count + 1;
while (1) {
while (left--) {
code |= (bitbuf & 1) ^ 1; /* invert code */
bitbuf >>= 1;
count = *next++;
if (code < first + count) { /* if length len, return symbol */
s->bitbuf = bitbuf;
s->bitcnt = (s->bitcnt - len) & 7;
return h->symbol[index + (code - first)];
}
index += count; /* else update for next length */
first += count;
first <<= 1;
code <<= 1;
len++;
}
left = (MAXBITS+1) - len;
if (left == 0) break;
if (s->left == 0) {
s->left = s->infun(s->inhow, &(s->in));
if (s->left == 0) longjmp(s->env, 1); /* out of input */
}
bitbuf = *(s->in)++;
s->left--;
if (left > 8) left = 8;
}
return -9; /* ran out of codes */
}
/*
* Given a list of repeated code lengths rep[0..n-1], where each byte is a
* count (high four bits + 1) and a code length (low four bits), generate the
* list of code lengths. This compaction reduces the size of the object code.
* Then given the list of code lengths length[0..n-1] representing a canonical
* Huffman code for n symbols, construct the tables required to decode those
* codes. Those tables are the number of codes of each length, and the symbols
* sorted by length, retaining their original order within each length. The
* return value is zero for a complete code set, negative for an over-
* subscribed code set, and positive for an incomplete code set. The tables
* can be used if the return value is zero or positive, but they cannot be used
* if the return value is negative. If the return value is zero, it is not
* possible for decode() using that table to return an error--any stream of
* enough bits will resolve to a symbol. If the return value is positive, then
* it is possible for decode() using that table to return an error for received
* codes past the end of the incomplete lengths.
*/
local int construct(struct huffman *h, const unsigned char *rep, int n)
{
int symbol; /* current symbol when stepping through length[] */
int len; /* current length when stepping through h->count[] */
int left; /* number of possible codes left of current length */
short offs[MAXBITS+1]; /* offsets in symbol table for each length */
short length[256]; /* code lengths */
/* convert compact repeat counts into symbol bit length list */
symbol = 0;
do {
len = *rep++;
left = (len >> 4) + 1;
len &= 15;
do {
length[symbol++] = len;
} while (--left);
} while (--n);
n = symbol;
/* count number of codes of each length */
for (len = 0; len <= MAXBITS; len++)
h->count[len] = 0;
for (symbol = 0; symbol < n; symbol++)
(h->count[length[symbol]])++; /* assumes lengths are within bounds */
if (h->count[0] == n) /* no codes! */
return 0; /* complete, but decode() will fail */
/* check for an over-subscribed or incomplete set of lengths */
left = 1; /* one possible code of zero length */
for (len = 1; len <= MAXBITS; len++) {
left <<= 1; /* one more bit, double codes left */
left -= h->count[len]; /* deduct count from possible codes */
if (left < 0) return left; /* over-subscribed--return negative */
} /* left > 0 means incomplete */
/* generate offsets into symbol table for each length for sorting */
offs[1] = 0;
for (len = 1; len < MAXBITS; len++)
offs[len + 1] = offs[len] + h->count[len];
/*
* put symbols in table sorted by length, by symbol order within each
* length
*/
for (symbol = 0; symbol < n; symbol++)
if (length[symbol] != 0)
h->symbol[offs[length[symbol]]++] = symbol;
/* return zero for complete set, positive for incomplete set */
return left;
}
/*
* Decode PKWare Compression Library stream.
*
* Format notes:
*
* - First byte is 0 if literals are uncoded or 1 if they are coded. Second
* byte is 4, 5, or 6 for the number of extra bits in the distance code.
* This is the base-2 logarithm of the dictionary size minus six.
*
* - Compressed data is a combination of literals and length/distance pairs
* terminated by an end code. Literals are either Huffman coded or
* uncoded bytes. A length/distance pair is a coded length followed by a
* coded distance to represent a string that occurs earlier in the
* uncompressed data that occurs again at the current location.
*
* - A bit preceding a literal or length/distance pair indicates which comes
* next, 0 for literals, 1 for length/distance.
*
* - If literals are uncoded, then the next eight bits are the literal, in the
* normal bit order in the stream, i.e. no bit-reversal is needed. Similarly,
* no bit reversal is needed for either the length extra bits or the distance
* extra bits.
*
* - Literal bytes are simply written to the output. A length/distance pair is
* an instruction to copy previously uncompressed bytes to the output. The
* copy is from distance bytes back in the output stream, copying for length
* bytes.
*
* - Distances pointing before the beginning of the output data are not
* permitted.
*
* - Overlapped copies, where the length is greater than the distance, are
* allowed and common. For example, a distance of one and a length of 518
* simply copies the last byte 518 times. A distance of four and a length of
* twelve copies the last four bytes three times. A simple forward copy
* ignoring whether the length is greater than the distance or not implements
* this correctly.
*/
local int decomp(struct state *s)
{
int lit; /* true if literals are coded */
int dict; /* log2(dictionary size) - 6 */
int symbol; /* decoded symbol, extra bits for distance */
int len; /* length for copy */
unsigned dist; /* distance for copy */
int copy; /* copy counter */
unsigned char *from, *to; /* copy pointers */
static int virgin = 1; /* build tables once */
static short litcnt[MAXBITS+1], litsym[256]; /* litcode memory */
static short lencnt[MAXBITS+1], lensym[16]; /* lencode memory */
static short distcnt[MAXBITS+1], distsym[64]; /* distcode memory */
static struct huffman litcode = {litcnt, litsym}; /* length code */
static struct huffman lencode = {lencnt, lensym}; /* length code */
static struct huffman distcode = {distcnt, distsym};/* distance code */
/* bit lengths of literal codes */
static const unsigned char litlen[] = {
11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
44, 173};
/* bit lengths of length codes 0..15 */
static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
/* bit lengths of distance codes 0..63 */
static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
static const short base[16] = { /* base for length codes */
3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
static const char extra[16] = { /* extra bits for length codes */
0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};
/* set up decoding tables (once--might not be thread-safe) */
if (virgin) {
construct(&litcode, litlen, sizeof(litlen));
construct(&lencode, lenlen, sizeof(lenlen));
construct(&distcode, distlen, sizeof(distlen));
virgin = 0;
}
/* read header */
lit = bits(s, 8);
if (lit > 1) return -1;
dict = bits(s, 8);
if (dict < 4 || dict > 6) return -2;
/* decode literals and length/distance pairs */
do {
if (bits(s, 1)) {
/* get length */
symbol = decode(s, &lencode);
len = base[symbol] + bits(s, extra[symbol]);
if (len == 519) break; /* end code */
/* get distance */
symbol = len == 2 ? 2 : dict;
dist = decode(s, &distcode) << symbol;
dist += bits(s, symbol);
dist++;
if (s->first && dist > s->next)
return -3; /* distance too far back */
/* copy length bytes from distance bytes back */
do {
to = s->out + s->next;
from = to - dist;
copy = MAXWIN;
if (s->next < dist) {
from += copy;
copy = dist;
}
copy -= s->next;
if (copy > len) copy = len;
len -= copy;
s->next += copy;
do {
*to++ = *from++;
} while (--copy);
if (s->next == MAXWIN) {
if (s->outfun(s->outhow, s->out, s->next)) return 1;
s->next = 0;
s->first = 0;
}
} while (len != 0);
}
else {
/* get literal and write it */
symbol = lit ? decode(s, &litcode) : bits(s, 8);
s->out[s->next++] = symbol;
if (s->next == MAXWIN) {
if (s->outfun(s->outhow, s->out, s->next)) return 1;
s->next = 0;
s->first = 0;
}
}
} while (1);
return 0;
}
/* See comments in blast.h */
int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
unsigned *left, unsigned char **in)
{
struct state s; /* input/output state */
int err; /* return value */
/* initialize input state */
s.infun = infun;
s.inhow = inhow;
if (left != NULL && *left) {
s.left = *left;
s.in = *in;
}
else
s.left = 0;
s.bitbuf = 0;
s.bitcnt = 0;
/* initialize output state */
s.outfun = outfun;
s.outhow = outhow;
s.next = 0;
s.first = 1;
/* return if bits() or decode() tries to read past available input */
if (setjmp(s.env) != 0) /* if came back here via longjmp(), */
err = 2; /* then skip decomp(), return error */
else
err = decomp(&s); /* decompress */
/* return unused input */
if (left != NULL)
*left = s.left;
if (in != NULL)
*in = s.left ? s.in : NULL;
/* write any leftover output and update the error code if needed */
if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
err = 1;
return err;
}
#ifdef TEST
/* Example of how to use blast() */
#include <stdio.h>
#include <stdlib.h>
#define CHUNK 16384
local unsigned inf(void *how, unsigned char **buf)
{
static unsigned char hold[CHUNK];
*buf = hold;
return fread(hold, 1, CHUNK, (FILE *)how);
}
local int outf(void *how, unsigned char *buf, unsigned len)
{
return fwrite(buf, 1, len, (FILE *)how) != len;
}
/* Decompress a PKWare Compression Library stream from stdin to stdout */
int main(void)
{
int ret;
unsigned left;
/* decompress to stdout */
left = 0;
ret = blast(inf, stdin, outf, stdout, &left, NULL);
if (ret != 0)
fprintf(stderr, "blast error: %d\n", ret);
/* count any leftover bytes */
while (getchar() != EOF)
left++;
if (left)
fprintf(stderr, "blast warning: %u unused bytes of input\n", left);
/* return blast() error code */
return ret;
}
#endif

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/* blast.h -- interface for blast.c
Copyright (C) 2003, 2012, 2013 Mark Adler
version 1.3, 24 Aug 2013
This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Mark Adler madler@alumni.caltech.edu
*/
/*
* blast() decompresses the PKWare Data Compression Library (DCL) compressed
* format. It provides the same functionality as the explode() function in
* that library. (Note: PKWare overused the "implode" verb, and the format
* used by their library implode() function is completely different and
* incompatible with the implode compression method supported by PKZIP.)
*
* The binary mode for stdio functions should be used to assure that the
* compressed data is not corrupted when read or written. For example:
* fopen(..., "rb") and fopen(..., "wb").
*/
typedef unsigned (*blast_in)(void *how, unsigned char **buf);
typedef int (*blast_out)(void *how, unsigned char *buf, unsigned len);
/* Definitions for input/output functions passed to blast(). See below for
* what the provided functions need to do.
*/
int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
unsigned *left, unsigned char **in);
/* Decompress input to output using the provided infun() and outfun() calls.
* On success, the return value of blast() is zero. If there is an error in
* the source data, i.e. it is not in the proper format, then a negative value
* is returned. If there is not enough input available or there is not enough
* output space, then a positive error is returned.
*
* The input function is invoked: len = infun(how, &buf), where buf is set by
* infun() to point to the input buffer, and infun() returns the number of
* available bytes there. If infun() returns zero, then blast() returns with
* an input error. (blast() only asks for input if it needs it.) inhow is for
* use by the application to pass an input descriptor to infun(), if desired.
*
* If left and in are not NULL and *left is not zero when blast() is called,
* then the *left bytes are *in are consumed for input before infun() is used.
*
* The output function is invoked: err = outfun(how, buf, len), where the bytes
* to be written are buf[0..len-1]. If err is not zero, then blast() returns
* with an output error. outfun() is always called with len <= 4096. outhow
* is for use by the application to pass an output descriptor to outfun(), if
* desired.
*
* If there is any unused input, *left is set to the number of bytes that were
* read and *in points to them. Otherwise *left is set to zero and *in is set
* to NULL. If left or in are NULL, then they are not set.
*
* The return codes are:
*
* 2: ran out of input before completing decompression
* 1: output error before completing decompression
* 0: successful decompression
* -1: literal flag not zero or one
* -2: dictionary size not in 4..6
* -3: distance is too far back
*
* At the bottom of blast.c is an example program that uses blast() that can be
* compiled to produce a command-line decompression filter by defining TEST.
*/

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AIAIAIAIAIAIA

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{*******************************************************}
{ }
{ Borland Delphi Supplemental Components }
{ ZLIB Data Compression Interface Unit }
{ }
{ Copyright (c) 1997,99 Borland Corporation }
{ }
{*******************************************************}
{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }
unit ZLib;
interface
uses SysUtils, Classes;
type
TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
TFree = procedure (AppData, Block: Pointer); cdecl;
// Internal structure. Ignore.
TZStreamRec = packed record
next_in: PChar; // next input byte
avail_in: Integer; // number of bytes available at next_in
total_in: Longint; // total nb of input bytes read so far
next_out: PChar; // next output byte should be put here
avail_out: Integer; // remaining free space at next_out
total_out: Longint; // total nb of bytes output so far
msg: PChar; // last error message, NULL if no error
internal: Pointer; // not visible by applications
zalloc: TAlloc; // used to allocate the internal state
zfree: TFree; // used to free the internal state
AppData: Pointer; // private data object passed to zalloc and zfree
data_type: Integer; // best guess about the data type: ascii or binary
adler: Longint; // adler32 value of the uncompressed data
reserved: Longint; // reserved for future use
end;
// Abstract ancestor class
TCustomZlibStream = class(TStream)
private
FStrm: TStream;
FStrmPos: Integer;
FOnProgress: TNotifyEvent;
FZRec: TZStreamRec;
FBuffer: array [Word] of Char;
protected
procedure Progress(Sender: TObject); dynamic;
property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
constructor Create(Strm: TStream);
end;
{ TCompressionStream compresses data on the fly as data is written to it, and
stores the compressed data to another stream.
TCompressionStream is write-only and strictly sequential. Reading from the
stream will raise an exception. Using Seek to move the stream pointer
will raise an exception.
Output data is cached internally, written to the output stream only when
the internal output buffer is full. All pending output data is flushed
when the stream is destroyed.
The Position property returns the number of uncompressed bytes of
data that have been written to the stream so far.
CompressionRate returns the on-the-fly percentage by which the original
data has been compressed: (1 - (CompressedBytes / UncompressedBytes)) * 100
If raw data size = 100 and compressed data size = 25, the CompressionRate
is 75%
The OnProgress event is called each time the output buffer is filled and
written to the output stream. This is useful for updating a progress
indicator when you are writing a large chunk of data to the compression
stream in a single call.}
TCompressionLevel = (clNone, clFastest, clDefault, clMax);
TCompressionStream = class(TCustomZlibStream)
private
function GetCompressionRate: Single;
public
constructor Create(CompressionLevel: TCompressionLevel; Dest: TStream);
destructor Destroy; override;
function Read(var Buffer; Count: Longint): Longint; override;
function Write(const Buffer; Count: Longint): Longint; override;
function Seek(Offset: Longint; Origin: Word): Longint; override;
property CompressionRate: Single read GetCompressionRate;
property OnProgress;
end;
{ TDecompressionStream decompresses data on the fly as data is read from it.
Compressed data comes from a separate source stream. TDecompressionStream
is read-only and unidirectional; you can seek forward in the stream, but not
backwards. The special case of setting the stream position to zero is
allowed. Seeking forward decompresses data until the requested position in
the uncompressed data has been reached. Seeking backwards, seeking relative
to the end of the stream, requesting the size of the stream, and writing to
the stream will raise an exception.
The Position property returns the number of bytes of uncompressed data that
have been read from the stream so far.
The OnProgress event is called each time the internal input buffer of
compressed data is exhausted and the next block is read from the input stream.
This is useful for updating a progress indicator when you are reading a
large chunk of data from the decompression stream in a single call.}
TDecompressionStream = class(TCustomZlibStream)
public
constructor Create(Source: TStream);
destructor Destroy; override;
function Read(var Buffer; Count: Longint): Longint; override;
function Write(const Buffer; Count: Longint): Longint; override;
function Seek(Offset: Longint; Origin: Word): Longint; override;
property OnProgress;
end;
{ CompressBuf compresses data, buffer to buffer, in one call.
In: InBuf = ptr to compressed data
InBytes = number of bytes in InBuf
Out: OutBuf = ptr to newly allocated buffer containing decompressed data
OutBytes = number of bytes in OutBuf }
procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
out OutBuf: Pointer; out OutBytes: Integer);
{ DecompressBuf decompresses data, buffer to buffer, in one call.
In: InBuf = ptr to compressed data
InBytes = number of bytes in InBuf
OutEstimate = zero, or est. size of the decompressed data
Out: OutBuf = ptr to newly allocated buffer containing decompressed data
OutBytes = number of bytes in OutBuf }
procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
In: InBuf = ptr to compressed data
InBytes = number of bytes in InBuf
Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
BufSize = number of bytes in OutBuf }
procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
const OutBuf: Pointer; BufSize: Integer);
const
zlib_version = '1.2.11';
type
EZlibError = class(Exception);
ECompressionError = class(EZlibError);
EDecompressionError = class(EZlibError);
implementation
uses ZLibConst;
const
Z_NO_FLUSH = 0;
Z_PARTIAL_FLUSH = 1;
Z_SYNC_FLUSH = 2;
Z_FULL_FLUSH = 3;
Z_FINISH = 4;
Z_OK = 0;
Z_STREAM_END = 1;
Z_NEED_DICT = 2;
Z_ERRNO = (-1);
Z_STREAM_ERROR = (-2);
Z_DATA_ERROR = (-3);
Z_MEM_ERROR = (-4);
Z_BUF_ERROR = (-5);
Z_VERSION_ERROR = (-6);
Z_NO_COMPRESSION = 0;
Z_BEST_SPEED = 1;
Z_BEST_COMPRESSION = 9;
Z_DEFAULT_COMPRESSION = (-1);
Z_FILTERED = 1;
Z_HUFFMAN_ONLY = 2;
Z_RLE = 3;
Z_DEFAULT_STRATEGY = 0;
Z_BINARY = 0;
Z_ASCII = 1;
Z_UNKNOWN = 2;
Z_DEFLATED = 8;
{$L adler32.obj}
{$L compress.obj}
{$L crc32.obj}
{$L deflate.obj}
{$L infback.obj}
{$L inffast.obj}
{$L inflate.obj}
{$L inftrees.obj}
{$L trees.obj}
{$L uncompr.obj}
{$L zutil.obj}
procedure adler32; external;
procedure compressBound; external;
procedure crc32; external;
procedure deflateInit2_; external;
procedure deflateParams; external;
function _malloc(Size: Integer): Pointer; cdecl;
begin
Result := AllocMem(Size);
end;
procedure _free(Block: Pointer); cdecl;
begin
FreeMem(Block);
end;
procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
begin
FillChar(P^, count, B);
end;
procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
begin
Move(source^, dest^, count);
end;
// deflate compresses data
function deflateInit_(var strm: TZStreamRec; level: Integer; version: PChar;
recsize: Integer): Integer; external;
function deflate(var strm: TZStreamRec; flush: Integer): Integer; external;
function deflateEnd(var strm: TZStreamRec): Integer; external;
// inflate decompresses data
function inflateInit_(var strm: TZStreamRec; version: PChar;
recsize: Integer): Integer; external;
function inflate(var strm: TZStreamRec; flush: Integer): Integer; external;
function inflateEnd(var strm: TZStreamRec): Integer; external;
function inflateReset(var strm: TZStreamRec): Integer; external;
function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
begin
// GetMem(Result, Items*Size);
Result := AllocMem(Items * Size);
end;
procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
begin
FreeMem(Block);
end;
{function zlibCheck(code: Integer): Integer;
begin
Result := code;
if code < 0 then
raise EZlibError.Create('error'); //!!
end;}
function CCheck(code: Integer): Integer;
begin
Result := code;
if code < 0 then
raise ECompressionError.Create('error'); //!!
end;
function DCheck(code: Integer): Integer;
begin
Result := code;
if code < 0 then
raise EDecompressionError.Create('error'); //!!
end;
procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
out OutBuf: Pointer; out OutBytes: Integer);
var
strm: TZStreamRec;
P: Pointer;
begin
FillChar(strm, sizeof(strm), 0);
strm.zalloc := zlibAllocMem;
strm.zfree := zlibFreeMem;
OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
GetMem(OutBuf, OutBytes);
try
strm.next_in := InBuf;
strm.avail_in := InBytes;
strm.next_out := OutBuf;
strm.avail_out := OutBytes;
CCheck(deflateInit_(strm, Z_BEST_COMPRESSION, zlib_version, sizeof(strm)));
try
while CCheck(deflate(strm, Z_FINISH)) <> Z_STREAM_END do
begin
P := OutBuf;
Inc(OutBytes, 256);
ReallocMem(OutBuf, OutBytes);
strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
strm.avail_out := 256;
end;
finally
CCheck(deflateEnd(strm));
end;
ReallocMem(OutBuf, strm.total_out);
OutBytes := strm.total_out;
except
FreeMem(OutBuf);
raise
end;
end;
procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
var
strm: TZStreamRec;
P: Pointer;
BufInc: Integer;
begin
FillChar(strm, sizeof(strm), 0);
strm.zalloc := zlibAllocMem;
strm.zfree := zlibFreeMem;
BufInc := (InBytes + 255) and not 255;
if OutEstimate = 0 then
OutBytes := BufInc
else
OutBytes := OutEstimate;
GetMem(OutBuf, OutBytes);
try
strm.next_in := InBuf;
strm.avail_in := InBytes;
strm.next_out := OutBuf;
strm.avail_out := OutBytes;
DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
try
while DCheck(inflate(strm, Z_NO_FLUSH)) <> Z_STREAM_END do
begin
P := OutBuf;
Inc(OutBytes, BufInc);
ReallocMem(OutBuf, OutBytes);
strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
strm.avail_out := BufInc;
end;
finally
DCheck(inflateEnd(strm));
end;
ReallocMem(OutBuf, strm.total_out);
OutBytes := strm.total_out;
except
FreeMem(OutBuf);
raise
end;
end;
procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
const OutBuf: Pointer; BufSize: Integer);
var
strm: TZStreamRec;
begin
FillChar(strm, sizeof(strm), 0);
strm.zalloc := zlibAllocMem;
strm.zfree := zlibFreeMem;
strm.next_in := InBuf;
strm.avail_in := InBytes;
strm.next_out := OutBuf;
strm.avail_out := BufSize;
DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
try
if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
raise EZlibError.CreateRes(@sTargetBufferTooSmall);
finally
DCheck(inflateEnd(strm));
end;
end;
// TCustomZlibStream
constructor TCustomZLibStream.Create(Strm: TStream);
begin
inherited Create;
FStrm := Strm;
FStrmPos := Strm.Position;
FZRec.zalloc := zlibAllocMem;
FZRec.zfree := zlibFreeMem;
end;
procedure TCustomZLibStream.Progress(Sender: TObject);
begin
if Assigned(FOnProgress) then FOnProgress(Sender);
end;
// TCompressionStream
constructor TCompressionStream.Create(CompressionLevel: TCompressionLevel;
Dest: TStream);
const
Levels: array [TCompressionLevel] of ShortInt =
(Z_NO_COMPRESSION, Z_BEST_SPEED, Z_DEFAULT_COMPRESSION, Z_BEST_COMPRESSION);
begin
inherited Create(Dest);
FZRec.next_out := FBuffer;
FZRec.avail_out := sizeof(FBuffer);
CCheck(deflateInit_(FZRec, Levels[CompressionLevel], zlib_version, sizeof(FZRec)));
end;
destructor TCompressionStream.Destroy;
begin
FZRec.next_in := nil;
FZRec.avail_in := 0;
try
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
while (CCheck(deflate(FZRec, Z_FINISH)) <> Z_STREAM_END)
and (FZRec.avail_out = 0) do
begin
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
FZRec.next_out := FBuffer;
FZRec.avail_out := sizeof(FBuffer);
end;
if FZRec.avail_out < sizeof(FBuffer) then
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer) - FZRec.avail_out);
finally
deflateEnd(FZRec);
end;
inherited Destroy;
end;
function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
begin
raise ECompressionError.CreateRes(@sInvalidStreamOp);
end;
function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
begin
FZRec.next_in := @Buffer;
FZRec.avail_in := Count;
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
while (FZRec.avail_in > 0) do
begin
CCheck(deflate(FZRec, 0));
if FZRec.avail_out = 0 then
begin
FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
FZRec.next_out := FBuffer;
FZRec.avail_out := sizeof(FBuffer);
FStrmPos := FStrm.Position;
Progress(Self);
end;
end;
Result := Count;
end;
function TCompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
begin
if (Offset = 0) and (Origin = soFromCurrent) then
Result := FZRec.total_in
else
raise ECompressionError.CreateRes(@sInvalidStreamOp);
end;
function TCompressionStream.GetCompressionRate: Single;
begin
if FZRec.total_in = 0 then
Result := 0
else
Result := (1.0 - (FZRec.total_out / FZRec.total_in)) * 100.0;
end;
// TDecompressionStream
constructor TDecompressionStream.Create(Source: TStream);
begin
inherited Create(Source);
FZRec.next_in := FBuffer;
FZRec.avail_in := 0;
DCheck(inflateInit_(FZRec, zlib_version, sizeof(FZRec)));
end;
destructor TDecompressionStream.Destroy;
begin
FStrm.Seek(-FZRec.avail_in, 1);
inflateEnd(FZRec);
inherited Destroy;
end;
function TDecompressionStream.Read(var Buffer; Count: Longint): Longint;
begin
FZRec.next_out := @Buffer;
FZRec.avail_out := Count;
if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
while (FZRec.avail_out > 0) do
begin
if FZRec.avail_in = 0 then
begin
FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
if FZRec.avail_in = 0 then
begin
Result := Count - FZRec.avail_out;
Exit;
end;
FZRec.next_in := FBuffer;
FStrmPos := FStrm.Position;
Progress(Self);
end;
CCheck(inflate(FZRec, 0));
end;
Result := Count;
end;
function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
begin
raise EDecompressionError.CreateRes(@sInvalidStreamOp);
end;
function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
var
I: Integer;
Buf: array [0..4095] of Char;
begin
if (Offset = 0) and (Origin = soFromBeginning) then
begin
DCheck(inflateReset(FZRec));
FZRec.next_in := FBuffer;
FZRec.avail_in := 0;
FStrm.Position := 0;
FStrmPos := 0;
end
else if ( (Offset >= 0) and (Origin = soFromCurrent)) or
( ((Offset - FZRec.total_out) > 0) and (Origin = soFromBeginning)) then
begin
if Origin = soFromBeginning then Dec(Offset, FZRec.total_out);
if Offset > 0 then
begin
for I := 1 to Offset div sizeof(Buf) do
ReadBuffer(Buf, sizeof(Buf));
ReadBuffer(Buf, Offset mod sizeof(Buf));
end;
end
else
raise EDecompressionError.CreateRes(@sInvalidStreamOp);
Result := FZRec.total_out;
end;
end.

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unit ZLibConst;
interface
resourcestring
sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
sInvalidStreamOp = 'Invalid stream operation';
implementation
end.

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Overview
========
This directory contains an update to the ZLib interface unit,
distributed by Borland as a Delphi supplemental component.
The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
and is based on zlib version 1.0.4. There are a series of bugs
and security problems associated with that old zlib version, and
we recommend the users to update their ZLib unit.
Summary of modifications
========================
- Improved makefile, adapted to zlib version 1.2.1.
- Some field types from TZStreamRec are changed from Integer to
Longint, for consistency with the zlib.h header, and for 64-bit
readiness.
- The zlib_version constant is updated.
- The new Z_RLE strategy has its corresponding symbolic constant.
- The allocation and deallocation functions and function types
(TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
and _malloc and _free are added as C RTL stubs. As a result,
the original C sources of zlib can be compiled out of the box,
and linked to the ZLib unit.
Suggestions for improvements
============================
Currently, the ZLib unit provides only a limited wrapper around
the zlib library, and much of the original zlib functionality is
missing. Handling compressed file formats like ZIP/GZIP or PNG
cannot be implemented without having this functionality.
Applications that handle these formats are either using their own,
duplicated code, or not using the ZLib unit at all.
Here are a few suggestions:
- Checksum class wrappers around adler32() and crc32(), similar
to the Java classes that implement the java.util.zip.Checksum
interface.
- The ability to read and write raw deflate streams, without the
zlib stream header and trailer. Raw deflate streams are used
in the ZIP file format.
- The ability to read and write gzip streams, used in the GZIP
file format, and normally produced by the gzip program.
- The ability to select a different compression strategy, useful
to PNG and MNG image compression, and to multimedia compression
in general. Besides the compression level
TCompressionLevel = (clNone, clFastest, clDefault, clMax);
which, in fact, could have used the 'z' prefix and avoided
TColor-like symbols
TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);
there could be a compression strategy
TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);
- ZIP and GZIP stream handling via TStreams.
--
Cosmin Truta <cosmint@cs.ubbcluj.ro>

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# Makefile for zlib
# For use with Delphi and C++ Builder under Win32
# Updated for zlib 1.2.x by Cosmin Truta
# ------------ Borland C++ ------------
# This project uses the Delphi (fastcall/register) calling convention:
LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
CC = bcc32
LD = bcc32
AR = tlib
# do not use "-pr" in CFLAGS
CFLAGS = -a -d -k- -O2 $(LOC)
LDFLAGS =
# variables
ZLIB_LIB = zlib.lib
OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
# targets
all: $(ZLIB_LIB) example.exe minigzip.exe
.c.obj:
$(CC) -c $(CFLAGS) $*.c
adler32.obj: adler32.c zlib.h zconf.h
compress.obj: compress.c zlib.h zconf.h
crc32.obj: crc32.c zlib.h zconf.h crc32.h
deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h
gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h
gzread.obj: gzread.c zlib.h zconf.h gzguts.h
gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h
infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
inffast.h inffixed.h
inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
inffast.h
inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
inffast.h inffixed.h
inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
uncompr.obj: uncompr.c zlib.h zconf.h
zutil.obj: zutil.c zutil.h zlib.h zconf.h
example.obj: test/example.c zlib.h zconf.h
minigzip.obj: test/minigzip.c zlib.h zconf.h
# For the sake of the old Borland make,
# the command line is cut to fit in the MS-DOS 128 byte limit:
$(ZLIB_LIB): $(OBJ1) $(OBJ2)
-del $(ZLIB_LIB)
$(AR) $(ZLIB_LIB) $(OBJP1)
$(AR) $(ZLIB_LIB) $(OBJP2)
# testing
test: example.exe minigzip.exe
example
echo hello world | minigzip | minigzip -d
example.exe: example.obj $(ZLIB_LIB)
$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
minigzip.exe: minigzip.obj $(ZLIB_LIB)
$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
# cleanup
clean:
-del *.obj
-del *.exe
-del *.lib
-del *.tds
-del zlib.bak
-del foo.gz

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<?xml version="1.0" encoding="utf-8" ?>
<project name="DotZLib" default="build" basedir="./DotZLib">
<description>A .Net wrapper library around ZLib1.dll</description>
<property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
<property name="build.root" value="bin" />
<property name="debug" value="true" />
<property name="nunit" value="true" />
<property name="build.folder" value="${build.root}/debug/" if="${debug}" />
<property name="build.folder" value="${build.root}/release/" unless="${debug}" />
<target name="clean" description="Remove all generated files">
<delete dir="${build.root}" failonerror="false" />
</target>
<target name="build" description="compiles the source code">
<mkdir dir="${build.folder}" />
<csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
<references basedir="${nunit.location}">
<includes if="${nunit}" name="nunit.framework.dll" />
</references>
<sources>
<includes name="*.cs" />
<excludes name="UnitTests.cs" unless="${nunit}" />
</sources>
<arg value="/d:nunit" if="${nunit}" />
</csc>
</target>
</project>

BIN
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/dotzlib/DotZLib.chm Normal file
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Microsoft Visual Studio Solution File, Format Version 8.00
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
ProjectSection(ProjectDependencies) = postProject
EndProjectSection
EndProject
Global
GlobalSection(SolutionConfiguration) = preSolution
Debug = Debug
Release = Release
EndGlobalSection
GlobalSection(ProjectConfiguration) = postSolution
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
EndGlobalSection
GlobalSection(ExtensibilityAddIns) = postSolution
EndGlobalSection
EndGlobal

58
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using System.Reflection;
using System.Runtime.CompilerServices;
//
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
//
[assembly: AssemblyTitle("DotZLib")]
[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("Henrik Ravn")]
[assembly: AssemblyProduct("")]
[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
//
// Version information for an assembly consists of the following four values:
//
// Major Version
// Minor Version
// Build Number
// Revision
//
// You can specify all the values or you can default the Revision and Build Numbers
// by using the '*' as shown below:
[assembly: AssemblyVersion("1.0.*")]
//
// In order to sign your assembly you must specify a key to use. Refer to the
// Microsoft .NET Framework documentation for more information on assembly signing.
//
// Use the attributes below to control which key is used for signing.
//
// Notes:
// (*) If no key is specified, the assembly is not signed.
// (*) KeyName refers to a key that has been installed in the Crypto Service
// Provider (CSP) on your machine. KeyFile refers to a file which contains
// a key.
// (*) If the KeyFile and the KeyName values are both specified, the
// following processing occurs:
// (1) If the KeyName can be found in the CSP, that key is used.
// (2) If the KeyName does not exist and the KeyFile does exist, the key
// in the KeyFile is installed into the CSP and used.
// (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
// When specifying the KeyFile, the location of the KeyFile should be
// relative to the project output directory which is
// %Project Directory%\obj\<configuration>. For example, if your KeyFile is
// located in the project directory, you would specify the AssemblyKeyFile
// attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
// (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
// documentation for more information on this.
//
[assembly: AssemblyDelaySign(false)]
[assembly: AssemblyKeyFile("")]
[assembly: AssemblyKeyName("")]

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Runtime.InteropServices;
using System.Text;
namespace DotZLib
{
#region ChecksumGeneratorBase
/// <summary>
/// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s
/// </summary>
/// <example></example>
public abstract class ChecksumGeneratorBase : ChecksumGenerator
{
/// <summary>
/// The value of the current checksum
/// </summary>
protected uint _current;
/// <summary>
/// Initializes a new instance of the checksum generator base - the current checksum is
/// set to zero
/// </summary>
public ChecksumGeneratorBase()
{
_current = 0;
}
/// <summary>
/// Initializes a new instance of the checksum generator basewith a specified value
/// </summary>
/// <param name="initialValue">The value to set the current checksum to</param>
public ChecksumGeneratorBase(uint initialValue)
{
_current = initialValue;
}
/// <summary>
/// Resets the current checksum to zero
/// </summary>
public void Reset() { _current = 0; }
/// <summary>
/// Gets the current checksum value
/// </summary>
public uint Value { get { return _current; } }
/// <summary>
/// Updates the current checksum with part of an array of bytes
/// </summary>
/// <param name="data">The data to update the checksum with</param>
/// <param name="offset">Where in <c>data</c> to start updating</param>
/// <param name="count">The number of bytes from <c>data</c> to use</param>
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
/// <remarks>All the other <c>Update</c> methods are implmeneted in terms of this one.
/// This is therefore the only method a derived class has to implement</remarks>
public abstract void Update(byte[] data, int offset, int count);
/// <summary>
/// Updates the current checksum with an array of bytes.
/// </summary>
/// <param name="data">The data to update the checksum with</param>
public void Update(byte[] data)
{
Update(data, 0, data.Length);
}
/// <summary>
/// Updates the current checksum with the data from a string
/// </summary>
/// <param name="data">The string to update the checksum with</param>
/// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
public void Update(string data)
{
Update(Encoding.UTF8.GetBytes(data));
}
/// <summary>
/// Updates the current checksum with the data from a string, using a specific encoding
/// </summary>
/// <param name="data">The string to update the checksum with</param>
/// <param name="encoding">The encoding to use</param>
public void Update(string data, Encoding encoding)
{
Update(encoding.GetBytes(data));
}
}
#endregion
#region CRC32
/// <summary>
/// Implements a CRC32 checksum generator
/// </summary>
public sealed class CRC32Checksum : ChecksumGeneratorBase
{
#region DLL imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern uint crc32(uint crc, int data, uint length);
#endregion
/// <summary>
/// Initializes a new instance of the CRC32 checksum generator
/// </summary>
public CRC32Checksum() : base() {}
/// <summary>
/// Initializes a new instance of the CRC32 checksum generator with a specified value
/// </summary>
/// <param name="initialValue">The value to set the current checksum to</param>
public CRC32Checksum(uint initialValue) : base(initialValue) {}
/// <summary>
/// Updates the current checksum with part of an array of bytes
/// </summary>
/// <param name="data">The data to update the checksum with</param>
/// <param name="offset">Where in <c>data</c> to start updating</param>
/// <param name="count">The number of bytes from <c>data</c> to use</param>
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
public override void Update(byte[] data, int offset, int count)
{
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > data.Length) throw new ArgumentException();
GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
_current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
}
finally
{
hData.Free();
}
}
}
#endregion
#region Adler
/// <summary>
/// Implements a checksum generator that computes the Adler checksum on data
/// </summary>
public sealed class AdlerChecksum : ChecksumGeneratorBase
{
#region DLL imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern uint adler32(uint adler, int data, uint length);
#endregion
/// <summary>
/// Initializes a new instance of the Adler checksum generator
/// </summary>
public AdlerChecksum() : base() {}
/// <summary>
/// Initializes a new instance of the Adler checksum generator with a specified value
/// </summary>
/// <param name="initialValue">The value to set the current checksum to</param>
public AdlerChecksum(uint initialValue) : base(initialValue) {}
/// <summary>
/// Updates the current checksum with part of an array of bytes
/// </summary>
/// <param name="data">The data to update the checksum with</param>
/// <param name="offset">Where in <c>data</c> to start updating</param>
/// <param name="count">The number of bytes from <c>data</c> to use</param>
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
/// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
public override void Update(byte[] data, int offset, int count)
{
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > data.Length) throw new ArgumentException();
GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
try
{
_current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
}
finally
{
hData.Free();
}
}
}
#endregion
}

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Diagnostics;
namespace DotZLib
{
/// <summary>
/// This class implements a circular buffer
/// </summary>
internal class CircularBuffer
{
#region Private data
private int _capacity;
private int _head;
private int _tail;
private int _size;
private byte[] _buffer;
#endregion
public CircularBuffer(int capacity)
{
Debug.Assert( capacity > 0 );
_buffer = new byte[capacity];
_capacity = capacity;
_head = 0;
_tail = 0;
_size = 0;
}
public int Size { get { return _size; } }
public int Put(byte[] source, int offset, int count)
{
Debug.Assert( count > 0 );
int trueCount = Math.Min(count, _capacity - Size);
for (int i = 0; i < trueCount; ++i)
_buffer[(_tail+i) % _capacity] = source[offset+i];
_tail += trueCount;
_tail %= _capacity;
_size += trueCount;
return trueCount;
}
public bool Put(byte b)
{
if (Size == _capacity) // no room
return false;
_buffer[_tail++] = b;
_tail %= _capacity;
++_size;
return true;
}
public int Get(byte[] destination, int offset, int count)
{
int trueCount = Math.Min(count,Size);
for (int i = 0; i < trueCount; ++i)
destination[offset + i] = _buffer[(_head+i) % _capacity];
_head += trueCount;
_head %= _capacity;
_size -= trueCount;
return trueCount;
}
public int Get()
{
if (Size == 0)
return -1;
int result = (int)_buffer[_head++ % _capacity];
--_size;
return result;
}
}
}

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libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/dotzlib/DotZLib/CodecBase.cs Normal file
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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Runtime.InteropServices;
namespace DotZLib
{
/// <summary>
/// Implements the common functionality needed for all <see cref="Codec"/>s
/// </summary>
public abstract class CodecBase : Codec, IDisposable
{
#region Data members
/// <summary>
/// Instance of the internal zlib buffer structure that is
/// passed to all functions in the zlib dll
/// </summary>
internal ZStream _ztream = new ZStream();
/// <summary>
/// True if the object instance has been disposed, false otherwise
/// </summary>
protected bool _isDisposed = false;
/// <summary>
/// The size of the internal buffers
/// </summary>
protected const int kBufferSize = 16384;
private byte[] _outBuffer = new byte[kBufferSize];
private byte[] _inBuffer = new byte[kBufferSize];
private GCHandle _hInput;
private GCHandle _hOutput;
private uint _checksum = 0;
#endregion
/// <summary>
/// Initializes a new instance of the <c>CodeBase</c> class.
/// </summary>
public CodecBase()
{
try
{
_hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
_hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
}
catch (Exception)
{
CleanUp(false);
throw;
}
}
#region Codec Members
/// <summary>
/// Occurs when more processed data are available.
/// </summary>
public event DataAvailableHandler DataAvailable;
/// <summary>
/// Fires the <see cref="DataAvailable"/> event
/// </summary>
protected void OnDataAvailable()
{
if (_ztream.total_out > 0)
{
if (DataAvailable != null)
DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
resetOutput();
}
}
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
public void Add(byte[] data)
{
Add(data,0,data.Length);
}
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
/// <param name="count">The number of bytes to add</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
/// <remarks>This must be implemented by a derived class</remarks>
public abstract void Add(byte[] data, int offset, int count);
/// <summary>
/// Finishes up any pending data that needs to be processed and handled.
/// </summary>
/// <remarks>This must be implemented by a derived class</remarks>
public abstract void Finish();
/// <summary>
/// Gets the checksum of the data that has been added so far
/// </summary>
public uint Checksum { get { return _checksum; } }
#endregion
#region Destructor & IDisposable stuff
/// <summary>
/// Destroys this instance
/// </summary>
~CodecBase()
{
CleanUp(false);
}
/// <summary>
/// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
/// </summary>
public void Dispose()
{
CleanUp(true);
}
/// <summary>
/// Performs any codec specific cleanup
/// </summary>
/// <remarks>This must be implemented by a derived class</remarks>
protected abstract void CleanUp();
// performs the release of the handles and calls the dereived CleanUp()
private void CleanUp(bool isDisposing)
{
if (!_isDisposed)
{
CleanUp();
if (_hInput.IsAllocated)
_hInput.Free();
if (_hOutput.IsAllocated)
_hOutput.Free();
_isDisposed = true;
}
}
#endregion
#region Helper methods
/// <summary>
/// Copies a number of bytes to the internal codec buffer - ready for proccesing
/// </summary>
/// <param name="data">The byte array that contains the data to copy</param>
/// <param name="startIndex">The index of the first byte to copy</param>
/// <param name="count">The number of bytes to copy from <c>data</c></param>
protected void copyInput(byte[] data, int startIndex, int count)
{
Array.Copy(data, startIndex, _inBuffer,0, count);
_ztream.next_in = _hInput.AddrOfPinnedObject();
_ztream.total_in = 0;
_ztream.avail_in = (uint)count;
}
/// <summary>
/// Resets the internal output buffers to a known state - ready for processing
/// </summary>
protected void resetOutput()
{
_ztream.total_out = 0;
_ztream.avail_out = kBufferSize;
_ztream.next_out = _hOutput.AddrOfPinnedObject();
}
/// <summary>
/// Updates the running checksum property
/// </summary>
/// <param name="newSum">The new checksum value</param>
protected void setChecksum(uint newSum)
{
_checksum = newSum;
}
#endregion
}
}

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace DotZLib
{
/// <summary>
/// Implements a data compressor, using the deflate algorithm in the ZLib dll
/// </summary>
public sealed class Deflater : CodecBase
{
#region Dll imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int deflate(ref ZStream sz, int flush);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int deflateReset(ref ZStream sz);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int deflateEnd(ref ZStream sz);
#endregion
/// <summary>
/// Constructs an new instance of the <c>Deflater</c>
/// </summary>
/// <param name="level">The compression level to use for this <c>Deflater</c></param>
public Deflater(CompressLevel level) : base()
{
int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
if (retval != 0)
throw new ZLibException(retval, "Could not initialize deflater");
resetOutput();
}
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
/// <param name="count">The number of bytes to add</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
public override void Add(byte[] data, int offset, int count)
{
if (data == null) throw new ArgumentNullException();
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > data.Length) throw new ArgumentException();
int total = count;
int inputIndex = offset;
int err = 0;
while (err >= 0 && inputIndex < total)
{
copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
while (err >= 0 && _ztream.avail_in > 0)
{
err = deflate(ref _ztream, (int)FlushTypes.None);
if (err == 0)
while (_ztream.avail_out == 0)
{
OnDataAvailable();
err = deflate(ref _ztream, (int)FlushTypes.None);
}
inputIndex += (int)_ztream.total_in;
}
}
setChecksum( _ztream.adler );
}
/// <summary>
/// Finishes up any pending data that needs to be processed and handled.
/// </summary>
public override void Finish()
{
int err;
do
{
err = deflate(ref _ztream, (int)FlushTypes.Finish);
OnDataAvailable();
}
while (err == 0);
setChecksum( _ztream.adler );
deflateReset(ref _ztream);
resetOutput();
}
/// <summary>
/// Closes the internal zlib deflate stream
/// </summary>
protected override void CleanUp() { deflateEnd(ref _ztream); }
}
}

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
namespace DotZLib
{
#region Internal types
/// <summary>
/// Defines constants for the various flush types used with zlib
/// </summary>
internal enum FlushTypes
{
None, Partial, Sync, Full, Finish, Block
}
#region ZStream structure
// internal mapping of the zlib zstream structure for marshalling
[StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]
internal struct ZStream
{
public IntPtr next_in;
public uint avail_in;
public uint total_in;
public IntPtr next_out;
public uint avail_out;
public uint total_out;
[MarshalAs(UnmanagedType.LPStr)]
string msg;
uint state;
uint zalloc;
uint zfree;
uint opaque;
int data_type;
public uint adler;
uint reserved;
}
#endregion
#endregion
#region Public enums
/// <summary>
/// Defines constants for the available compression levels in zlib
/// </summary>
public enum CompressLevel : int
{
/// <summary>
/// The default compression level with a reasonable compromise between compression and speed
/// </summary>
Default = -1,
/// <summary>
/// No compression at all. The data are passed straight through.
/// </summary>
None = 0,
/// <summary>
/// The maximum compression rate available.
/// </summary>
Best = 9,
/// <summary>
/// The fastest available compression level.
/// </summary>
Fastest = 1
}
#endregion
#region Exception classes
/// <summary>
/// The exception that is thrown when an error occurs on the zlib dll
/// </summary>
public class ZLibException : ApplicationException
{
/// <summary>
/// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
/// error message and error code
/// </summary>
/// <param name="errorCode">The zlib error code that caused the exception</param>
/// <param name="msg">A message that (hopefully) describes the error</param>
public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
/// error code
/// </summary>
/// <param name="errorCode">The zlib error code that caused the exception</param>
public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))
{
}
}
#endregion
#region Interfaces
/// <summary>
/// Declares methods and properties that enables a running checksum to be calculated
/// </summary>
public interface ChecksumGenerator
{
/// <summary>
/// Gets the current value of the checksum
/// </summary>
uint Value { get; }
/// <summary>
/// Clears the current checksum to 0
/// </summary>
void Reset();
/// <summary>
/// Updates the current checksum with an array of bytes
/// </summary>
/// <param name="data">The data to update the checksum with</param>
void Update(byte[] data);
/// <summary>
/// Updates the current checksum with part of an array of bytes
/// </summary>
/// <param name="data">The data to update the checksum with</param>
/// <param name="offset">Where in <c>data</c> to start updating</param>
/// <param name="count">The number of bytes from <c>data</c> to use</param>
/// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
/// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>
/// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
void Update(byte[] data, int offset, int count);
/// <summary>
/// Updates the current checksum with the data from a string
/// </summary>
/// <param name="data">The string to update the checksum with</param>
/// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
void Update(string data);
/// <summary>
/// Updates the current checksum with the data from a string, using a specific encoding
/// </summary>
/// <param name="data">The string to update the checksum with</param>
/// <param name="encoding">The encoding to use</param>
void Update(string data, Encoding encoding);
}
/// <summary>
/// Represents the method that will be called from a codec when new data
/// are available.
/// </summary>
/// <paramref name="data">The byte array containing the processed data</paramref>
/// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>
/// <paramref name="count">The number of processed bytes available</paramref>
/// <remarks>On return from this method, the data may be overwritten, so grab it while you can.
/// You cannot assume that startIndex will be zero.
/// </remarks>
public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);
/// <summary>
/// Declares methods and events for implementing compressors/decompressors
/// </summary>
public interface Codec
{
/// <summary>
/// Occurs when more processed data are available.
/// </summary>
event DataAvailableHandler DataAvailable;
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
void Add(byte[] data);
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
/// <param name="count">The number of bytes to add</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
void Add(byte[] data, int offset, int count);
/// <summary>
/// Finishes up any pending data that needs to be processed and handled.
/// </summary>
void Finish();
/// <summary>
/// Gets the checksum of the data that has been added so far
/// </summary>
uint Checksum { get; }
}
#endregion
#region Classes
/// <summary>
/// Encapsulates general information about the ZLib library
/// </summary>
public class Info
{
#region DLL imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern uint zlibCompileFlags();
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern string zlibVersion();
#endregion
#region Private stuff
private uint _flags;
// helper function that unpacks a bitsize mask
private static int bitSize(uint bits)
{
switch (bits)
{
case 0: return 16;
case 1: return 32;
case 2: return 64;
}
return -1;
}
#endregion
/// <summary>
/// Constructs an instance of the <c>Info</c> class.
/// </summary>
public Info()
{
_flags = zlibCompileFlags();
}
/// <summary>
/// True if the library is compiled with debug info
/// </summary>
public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }
/// <summary>
/// True if the library is compiled with assembly optimizations
/// </summary>
public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }
/// <summary>
/// Gets the size of the unsigned int that was compiled into Zlib
/// </summary>
public int SizeOfUInt { get { return bitSize(_flags & 3); } }
/// <summary>
/// Gets the size of the unsigned long that was compiled into Zlib
/// </summary>
public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }
/// <summary>
/// Gets the size of the pointers that were compiled into Zlib
/// </summary>
public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }
/// <summary>
/// Gets the size of the z_off_t type that was compiled into Zlib
/// </summary>
public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }
/// <summary>
/// Gets the version of ZLib as a string, e.g. "1.2.1"
/// </summary>
public static string Version { get { return zlibVersion(); } }
}
#endregion
}

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<VisualStudioProject>
<CSHARP
ProjectType = "Local"
ProductVersion = "7.10.3077"
SchemaVersion = "2.0"
ProjectGuid = "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
>
<Build>
<Settings
ApplicationIcon = ""
AssemblyKeyContainerName = ""
AssemblyName = "DotZLib"
AssemblyOriginatorKeyFile = ""
DefaultClientScript = "JScript"
DefaultHTMLPageLayout = "Grid"
DefaultTargetSchema = "IE50"
DelaySign = "false"
OutputType = "Library"
PreBuildEvent = ""
PostBuildEvent = ""
RootNamespace = "DotZLib"
RunPostBuildEvent = "OnBuildSuccess"
StartupObject = ""
>
<Config
Name = "Debug"
AllowUnsafeBlocks = "false"
BaseAddress = "285212672"
CheckForOverflowUnderflow = "false"
ConfigurationOverrideFile = ""
DefineConstants = "DEBUG;TRACE"
DocumentationFile = "docs\DotZLib.xml"
DebugSymbols = "true"
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NoWarn = "1591"
Optimize = "false"
OutputPath = "bin\Debug\"
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RemoveIntegerChecks = "false"
TreatWarningsAsErrors = "false"
WarningLevel = "4"
/>
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AllowUnsafeBlocks = "false"
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ConfigurationOverrideFile = ""
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DebugSymbols = "false"
FileAlignment = "4096"
IncrementalBuild = "false"
NoStdLib = "false"
NoWarn = ""
Optimize = "true"
OutputPath = "bin\Release\"
RegisterForComInterop = "false"
RemoveIntegerChecks = "false"
TreatWarningsAsErrors = "false"
WarningLevel = "4"
/>
</Settings>
<References>
<Reference
Name = "System"
AssemblyName = "System"
HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"
/>
<Reference
Name = "System.Data"
AssemblyName = "System.Data"
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<Reference
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AssemblyName = "nunit.framework"
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AssemblyFolderKey = "hklm\dn\nunit.framework"
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</References>
</Build>
<Files>
<Include>
<File
RelPath = "AssemblyInfo.cs"
SubType = "Code"
BuildAction = "Compile"
/>
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BuildAction = "Compile"
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</CSHARP>
</VisualStudioProject>

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.IO;
using System.Runtime.InteropServices;
namespace DotZLib
{
/// <summary>
/// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.
/// </summary>
public class GZipStream : Stream, IDisposable
{
#region Dll Imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
private static extern IntPtr gzopen(string name, string mode);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int gzclose(IntPtr gzFile);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int gzwrite(IntPtr gzFile, int data, int length);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int gzread(IntPtr gzFile, int data, int length);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int gzgetc(IntPtr gzFile);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int gzputc(IntPtr gzFile, int c);
#endregion
#region Private data
private IntPtr _gzFile;
private bool _isDisposed = false;
private bool _isWriting;
#endregion
#region Constructors
/// <summary>
/// Creates a new file as a writeable GZipStream
/// </summary>
/// <param name="fileName">The name of the compressed file to create</param>
/// <param name="level">The compression level to use when adding data</param>
/// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
public GZipStream(string fileName, CompressLevel level)
{
_isWriting = true;
_gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));
if (_gzFile == IntPtr.Zero)
throw new ZLibException(-1, "Could not open " + fileName);
}
/// <summary>
/// Opens an existing file as a readable GZipStream
/// </summary>
/// <param name="fileName">The name of the file to open</param>
/// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
public GZipStream(string fileName)
{
_isWriting = false;
_gzFile = gzopen(fileName, "rb");
if (_gzFile == IntPtr.Zero)
throw new ZLibException(-1, "Could not open " + fileName);
}
#endregion
#region Access properties
/// <summary>
/// Returns true of this stream can be read from, false otherwise
/// </summary>
public override bool CanRead
{
get
{
return !_isWriting;
}
}
/// <summary>
/// Returns false.
/// </summary>
public override bool CanSeek
{
get
{
return false;
}
}
/// <summary>
/// Returns true if this tsream is writeable, false otherwise
/// </summary>
public override bool CanWrite
{
get
{
return _isWriting;
}
}
#endregion
#region Destructor & IDispose stuff
/// <summary>
/// Destroys this instance
/// </summary>
~GZipStream()
{
cleanUp(false);
}
/// <summary>
/// Closes the external file handle
/// </summary>
public void Dispose()
{
cleanUp(true);
}
// Does the actual closing of the file handle.
private void cleanUp(bool isDisposing)
{
if (!_isDisposed)
{
gzclose(_gzFile);
_isDisposed = true;
}
}
#endregion
#region Basic reading and writing
/// <summary>
/// Attempts to read a number of bytes from the stream.
/// </summary>
/// <param name="buffer">The destination data buffer</param>
/// <param name="offset">The index of the first destination byte in <c>buffer</c></param>
/// <param name="count">The number of bytes requested</param>
/// <returns>The number of bytes read</returns>
/// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
/// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
/// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is &gt; buffer.Length</exception>
/// <exception cref="NotSupportedException">If this stream is not readable.</exception>
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
public override int Read(byte[] buffer, int offset, int count)
{
if (!CanRead) throw new NotSupportedException();
if (buffer == null) throw new ArgumentNullException();
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > buffer.Length) throw new ArgumentException();
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
int result;
try
{
result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
if (result < 0)
throw new IOException();
}
finally
{
h.Free();
}
return result;
}
/// <summary>
/// Attempts to read a single byte from the stream.
/// </summary>
/// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>
public override int ReadByte()
{
if (!CanRead) throw new NotSupportedException();
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
return gzgetc(_gzFile);
}
/// <summary>
/// Writes a number of bytes to the stream
/// </summary>
/// <param name="buffer"></param>
/// <param name="offset"></param>
/// <param name="count"></param>
/// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
/// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
/// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is &gt; buffer.Length</exception>
/// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
public override void Write(byte[] buffer, int offset, int count)
{
if (!CanWrite) throw new NotSupportedException();
if (buffer == null) throw new ArgumentNullException();
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > buffer.Length) throw new ArgumentException();
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
try
{
int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
if (result < 0)
throw new IOException();
}
finally
{
h.Free();
}
}
/// <summary>
/// Writes a single byte to the stream
/// </summary>
/// <param name="value">The byte to add to the stream.</param>
/// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
/// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
public override void WriteByte(byte value)
{
if (!CanWrite) throw new NotSupportedException();
if (_isDisposed) throw new ObjectDisposedException("GZipStream");
int result = gzputc(_gzFile, (int)value);
if (result < 0)
throw new IOException();
}
#endregion
#region Position & length stuff
/// <summary>
/// Not supported.
/// </summary>
/// <param name="value"></param>
/// <exception cref="NotSupportedException">Always thrown</exception>
public override void SetLength(long value)
{
throw new NotSupportedException();
}
/// <summary>
/// Not suppported.
/// </summary>
/// <param name="offset"></param>
/// <param name="origin"></param>
/// <returns></returns>
/// <exception cref="NotSupportedException">Always thrown</exception>
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotSupportedException();
}
/// <summary>
/// Flushes the <c>GZipStream</c>.
/// </summary>
/// <remarks>In this implementation, this method does nothing. This is because excessive
/// flushing may degrade the achievable compression rates.</remarks>
public override void Flush()
{
// left empty on purpose
}
/// <summary>
/// Gets/sets the current position in the <c>GZipStream</c>. Not suppported.
/// </summary>
/// <remarks>In this implementation this property is not supported</remarks>
/// <exception cref="NotSupportedException">Always thrown</exception>
public override long Position
{
get
{
throw new NotSupportedException();
}
set
{
throw new NotSupportedException();
}
}
/// <summary>
/// Gets the size of the stream. Not suppported.
/// </summary>
/// <remarks>In this implementation this property is not supported</remarks>
/// <exception cref="NotSupportedException">Always thrown</exception>
public override long Length
{
get
{
throw new NotSupportedException();
}
}
#endregion
}
}

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace DotZLib
{
/// <summary>
/// Implements a data decompressor, using the inflate algorithm in the ZLib dll
/// </summary>
public class Inflater : CodecBase
{
#region Dll imports
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
private static extern int inflateInit_(ref ZStream sz, string vs, int size);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int inflate(ref ZStream sz, int flush);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int inflateReset(ref ZStream sz);
[DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
private static extern int inflateEnd(ref ZStream sz);
#endregion
/// <summary>
/// Constructs an new instance of the <c>Inflater</c>
/// </summary>
public Inflater() : base()
{
int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));
if (retval != 0)
throw new ZLibException(retval, "Could not initialize inflater");
resetOutput();
}
/// <summary>
/// Adds more data to the codec to be processed.
/// </summary>
/// <param name="data">Byte array containing the data to be added to the codec</param>
/// <param name="offset">The index of the first byte to add from <c>data</c></param>
/// <param name="count">The number of bytes to add</param>
/// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
public override void Add(byte[] data, int offset, int count)
{
if (data == null) throw new ArgumentNullException();
if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
if ((offset+count) > data.Length) throw new ArgumentException();
int total = count;
int inputIndex = offset;
int err = 0;
while (err >= 0 && inputIndex < total)
{
copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
err = inflate(ref _ztream, (int)FlushTypes.None);
if (err == 0)
while (_ztream.avail_out == 0)
{
OnDataAvailable();
err = inflate(ref _ztream, (int)FlushTypes.None);
}
inputIndex += (int)_ztream.total_in;
}
setChecksum( _ztream.adler );
}
/// <summary>
/// Finishes up any pending data that needs to be processed and handled.
/// </summary>
public override void Finish()
{
int err;
do
{
err = inflate(ref _ztream, (int)FlushTypes.Finish);
OnDataAvailable();
}
while (err == 0);
setChecksum( _ztream.adler );
inflateReset(ref _ztream);
resetOutput();
}
/// <summary>
/// Closes the internal zlib inflate stream
/// </summary>
protected override void CleanUp() { inflateEnd(ref _ztream); }
}
}

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//
// © Copyright Henrik Ravn 2004
//
// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
using System;
using System.Collections;
using System.IO;
// uncomment the define below to include unit tests
//#define nunit
#if nunit
using NUnit.Framework;
// Unit tests for the DotZLib class library
// ----------------------------------------
//
// Use this with NUnit 2 from http://www.nunit.org
//
namespace DotZLibTests
{
using DotZLib;
// helper methods
internal class Utils
{
public static bool byteArrEqual( byte[] lhs, byte[] rhs )
{
if (lhs.Length != rhs.Length)
return false;
for (int i = lhs.Length-1; i >= 0; --i)
if (lhs[i] != rhs[i])
return false;
return true;
}
}
[TestFixture]
public class CircBufferTests
{
#region Circular buffer tests
[Test]
public void SinglePutGet()
{
CircularBuffer buf = new CircularBuffer(10);
Assert.AreEqual( 0, buf.Size );
Assert.AreEqual( -1, buf.Get() );
Assert.IsTrue(buf.Put( 1 ));
Assert.AreEqual( 1, buf.Size );
Assert.AreEqual( 1, buf.Get() );
Assert.AreEqual( 0, buf.Size );
Assert.AreEqual( -1, buf.Get() );
}
[Test]
public void BlockPutGet()
{
CircularBuffer buf = new CircularBuffer(10);
byte[] arr = {1,2,3,4,5,6,7,8,9,10};
Assert.AreEqual( 10, buf.Put(arr,0,10) );
Assert.AreEqual( 10, buf.Size );
Assert.IsFalse( buf.Put(11) );
Assert.AreEqual( 1, buf.Get() );
Assert.IsTrue( buf.Put(11) );
byte[] arr2 = (byte[])arr.Clone();
Assert.AreEqual( 9, buf.Get(arr2,1,9) );
Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );
}
#endregion
}
[TestFixture]
public class ChecksumTests
{
#region CRC32 Tests
[Test]
public void CRC32_Null()
{
CRC32Checksum crc32 = new CRC32Checksum();
Assert.AreEqual( 0, crc32.Value );
crc32 = new CRC32Checksum(1);
Assert.AreEqual( 1, crc32.Value );
crc32 = new CRC32Checksum(556);
Assert.AreEqual( 556, crc32.Value );
}
[Test]
public void CRC32_Data()
{
CRC32Checksum crc32 = new CRC32Checksum();
byte[] data = { 1,2,3,4,5,6,7 };
crc32.Update(data);
Assert.AreEqual( 0x70e46888, crc32.Value );
crc32 = new CRC32Checksum();
crc32.Update("penguin");
Assert.AreEqual( 0x0e5c1a120, crc32.Value );
crc32 = new CRC32Checksum(1);
crc32.Update("penguin");
Assert.AreEqual(0x43b6aa94, crc32.Value);
}
#endregion
#region Adler tests
[Test]
public void Adler_Null()
{
AdlerChecksum adler = new AdlerChecksum();
Assert.AreEqual(0, adler.Value);
adler = new AdlerChecksum(1);
Assert.AreEqual( 1, adler.Value );
adler = new AdlerChecksum(556);
Assert.AreEqual( 556, adler.Value );
}
[Test]
public void Adler_Data()
{
AdlerChecksum adler = new AdlerChecksum(1);
byte[] data = { 1,2,3,4,5,6,7 };
adler.Update(data);
Assert.AreEqual( 0x5b001d, adler.Value );
adler = new AdlerChecksum();
adler.Update("penguin");
Assert.AreEqual(0x0bcf02f6, adler.Value );
adler = new AdlerChecksum(1);
adler.Update("penguin");
Assert.AreEqual(0x0bd602f7, adler.Value);
}
#endregion
}
[TestFixture]
public class InfoTests
{
#region Info tests
[Test]
public void Info_Version()
{
Info info = new Info();
Assert.AreEqual("1.2.11", Info.Version);
Assert.AreEqual(32, info.SizeOfUInt);
Assert.AreEqual(32, info.SizeOfULong);
Assert.AreEqual(32, info.SizeOfPointer);
Assert.AreEqual(32, info.SizeOfOffset);
}
#endregion
}
[TestFixture]
public class DeflateInflateTests
{
#region Deflate tests
[Test]
public void Deflate_Init()
{
using (Deflater def = new Deflater(CompressLevel.Default))
{
}
}
private ArrayList compressedData = new ArrayList();
private uint adler1;
private ArrayList uncompressedData = new ArrayList();
private uint adler2;
public void CDataAvail(byte[] data, int startIndex, int count)
{
for (int i = 0; i < count; ++i)
compressedData.Add(data[i+startIndex]);
}
[Test]
public void Deflate_Compress()
{
compressedData.Clear();
byte[] testData = new byte[35000];
for (int i = 0; i < testData.Length; ++i)
testData[i] = 5;
using (Deflater def = new Deflater((CompressLevel)5))
{
def.DataAvailable += new DataAvailableHandler(CDataAvail);
def.Add(testData);
def.Finish();
adler1 = def.Checksum;
}
}
#endregion
#region Inflate tests
[Test]
public void Inflate_Init()
{
using (Inflater inf = new Inflater())
{
}
}
private void DDataAvail(byte[] data, int startIndex, int count)
{
for (int i = 0; i < count; ++i)
uncompressedData.Add(data[i+startIndex]);
}
[Test]
public void Inflate_Expand()
{
uncompressedData.Clear();
using (Inflater inf = new Inflater())
{
inf.DataAvailable += new DataAvailableHandler(DDataAvail);
inf.Add((byte[])compressedData.ToArray(typeof(byte)));
inf.Finish();
adler2 = inf.Checksum;
}
Assert.AreEqual( adler1, adler2 );
}
#endregion
}
[TestFixture]
public class GZipStreamTests
{
#region GZipStream test
[Test]
public void GZipStream_WriteRead()
{
using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))
{
BinaryWriter writer = new BinaryWriter(gzOut);
writer.Write("hi there");
writer.Write(Math.PI);
writer.Write(42);
}
using (GZipStream gzIn = new GZipStream("gzstream.gz"))
{
BinaryReader reader = new BinaryReader(gzIn);
string s = reader.ReadString();
Assert.AreEqual("hi there",s);
double d = reader.ReadDouble();
Assert.AreEqual(Math.PI, d);
int i = reader.ReadInt32();
Assert.AreEqual(42,i);
}
}
#endregion
}
}
#endif

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Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

58
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This directory contains a .Net wrapper class library for the ZLib1.dll
The wrapper includes support for inflating/deflating memory buffers,
.Net streaming wrappers for the gz streams part of zlib, and wrappers
for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.
Directory structure:
--------------------
LICENSE_1_0.txt - License file.
readme.txt - This file.
DotZLib.chm - Class library documentation
DotZLib.build - NAnt build file
DotZLib.sln - Microsoft Visual Studio 2003 solution file
DotZLib\*.cs - Source files for the class library
Unit tests:
-----------
The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.
To include unit tests in the build, define nunit before building.
Build instructions:
-------------------
1. Using Visual Studio.Net 2003:
Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)
will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on
you are building the release or debug version of the library. Check
DotZLib/UnitTests.cs for instructions on how to include unit tests in the
build.
2. Using NAnt:
Open a command prompt with access to the build environment and run nant
in the same directory as the DotZLib.build file.
You can define 2 properties on the nant command-line to control the build:
debug={true|false} to toggle between release/debug builds (default=true).
nunit={true|false} to include or esclude unit tests (default=true).
Also the target clean will remove binaries.
Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release
or ./DotZLib/bin/debug, depending on whether you are building the release
or debug version of the library.
Examples:
nant -D:debug=false -D:nunit=false
will build a release mode version of the library without unit tests.
nant
will build a debug version of the library with unit tests
nant clean
will remove all previously built files.
---------------------------------
Copyright (c) Henrik Ravn 2004
Use, modification and distribution are subject to the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

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/*
;uInt longest_match_x64(
; deflate_state *s,
; IPos cur_match); // current match
; gvmat64.S -- Asm portion of the optimized longest_match for 32 bits x86_64
; (AMD64 on Athlon 64, Opteron, Phenom
; and Intel EM64T on Pentium 4 with EM64T, Pentium D, Core 2 Duo, Core I5/I7)
; this file is translation from gvmat64.asm to GCC 4.x (for Linux, Mac XCode)
; Copyright (C) 1995-2010 Jean-loup Gailly, Brian Raiter and Gilles Vollant.
;
; File written by Gilles Vollant, by converting to assembly the longest_match
; from Jean-loup Gailly in deflate.c of zLib and infoZip zip.
; and by taking inspiration on asm686 with masm, optimised assembly code
; from Brian Raiter, written 1998
;
; This software is provided 'as-is', without any express or implied
; warranty. In no event will the authors be held liable for any damages
; arising from the use of this software.
;
; Permission is granted to anyone to use this software for any purpose,
; including commercial applications, and to alter it and redistribute it
; freely, subject to the following restrictions:
;
; 1. The origin of this software must not be misrepresented; you must not
; claim that you wrote the original software. If you use this software
; in a product, an acknowledgment in the product documentation would be
; appreciated but is not required.
; 2. Altered source versions must be plainly marked as such, and must not be
; misrepresented as being the original software
; 3. This notice may not be removed or altered from any source distribution.
;
; http://www.zlib.net
; http://www.winimage.com/zLibDll
; http://www.muppetlabs.com/~breadbox/software/assembly.html
;
; to compile this file for zLib, I use option:
; gcc -c -arch x86_64 gvmat64.S
;uInt longest_match(s, cur_match)
; deflate_state *s;
; IPos cur_match; // current match /
;
; with XCode for Mac, I had strange error with some jump on intel syntax
; this is why BEFORE_JMP and AFTER_JMP are used
*/
#define BEFORE_JMP .att_syntax
#define AFTER_JMP .intel_syntax noprefix
#ifndef NO_UNDERLINE
# define match_init _match_init
# define longest_match _longest_match
#endif
.intel_syntax noprefix
.globl match_init, longest_match
.text
longest_match:
#define LocalVarsSize 96
/*
; register used : rax,rbx,rcx,rdx,rsi,rdi,r8,r9,r10,r11,r12
; free register : r14,r15
; register can be saved : rsp
*/
#define chainlenwmask (rsp + 8 - LocalVarsSize)
#define nicematch (rsp + 16 - LocalVarsSize)
#define save_rdi (rsp + 24 - LocalVarsSize)
#define save_rsi (rsp + 32 - LocalVarsSize)
#define save_rbx (rsp + 40 - LocalVarsSize)
#define save_rbp (rsp + 48 - LocalVarsSize)
#define save_r12 (rsp + 56 - LocalVarsSize)
#define save_r13 (rsp + 64 - LocalVarsSize)
#define save_r14 (rsp + 72 - LocalVarsSize)
#define save_r15 (rsp + 80 - LocalVarsSize)
/*
; all the +4 offsets are due to the addition of pending_buf_size (in zlib
; in the deflate_state structure since the asm code was first written
; (if you compile with zlib 1.0.4 or older, remove the +4).
; Note : these value are good with a 8 bytes boundary pack structure
*/
#define MAX_MATCH 258
#define MIN_MATCH 3
#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
/*
;;; Offsets for fields in the deflate_state structure. These numbers
;;; are calculated from the definition of deflate_state, with the
;;; assumption that the compiler will dword-align the fields. (Thus,
;;; changing the definition of deflate_state could easily cause this
;;; program to crash horribly, without so much as a warning at
;;; compile time. Sigh.)
; all the +zlib1222add offsets are due to the addition of fields
; in zlib in the deflate_state structure since the asm code was first written
; (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
; (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
; if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
*/
/* you can check the structure offset by running
#include <stdlib.h>
#include <stdio.h>
#include "deflate.h"
void print_depl()
{
deflate_state ds;
deflate_state *s=&ds;
printf("size pointer=%u\n",(int)sizeof(void*));
printf("#define dsWSize %u\n",(int)(((char*)&(s->w_size))-((char*)s)));
printf("#define dsWMask %u\n",(int)(((char*)&(s->w_mask))-((char*)s)));
printf("#define dsWindow %u\n",(int)(((char*)&(s->window))-((char*)s)));
printf("#define dsPrev %u\n",(int)(((char*)&(s->prev))-((char*)s)));
printf("#define dsMatchLen %u\n",(int)(((char*)&(s->match_length))-((char*)s)));
printf("#define dsPrevMatch %u\n",(int)(((char*)&(s->prev_match))-((char*)s)));
printf("#define dsStrStart %u\n",(int)(((char*)&(s->strstart))-((char*)s)));
printf("#define dsMatchStart %u\n",(int)(((char*)&(s->match_start))-((char*)s)));
printf("#define dsLookahead %u\n",(int)(((char*)&(s->lookahead))-((char*)s)));
printf("#define dsPrevLen %u\n",(int)(((char*)&(s->prev_length))-((char*)s)));
printf("#define dsMaxChainLen %u\n",(int)(((char*)&(s->max_chain_length))-((char*)s)));
printf("#define dsGoodMatch %u\n",(int)(((char*)&(s->good_match))-((char*)s)));
printf("#define dsNiceMatch %u\n",(int)(((char*)&(s->nice_match))-((char*)s)));
}
*/
#define dsWSize 68
#define dsWMask 76
#define dsWindow 80
#define dsPrev 96
#define dsMatchLen 144
#define dsPrevMatch 148
#define dsStrStart 156
#define dsMatchStart 160
#define dsLookahead 164
#define dsPrevLen 168
#define dsMaxChainLen 172
#define dsGoodMatch 188
#define dsNiceMatch 192
#define window_size [ rcx + dsWSize]
#define WMask [ rcx + dsWMask]
#define window_ad [ rcx + dsWindow]
#define prev_ad [ rcx + dsPrev]
#define strstart [ rcx + dsStrStart]
#define match_start [ rcx + dsMatchStart]
#define Lookahead [ rcx + dsLookahead] //; 0ffffffffh on infozip
#define prev_length [ rcx + dsPrevLen]
#define max_chain_length [ rcx + dsMaxChainLen]
#define good_match [ rcx + dsGoodMatch]
#define nice_match [ rcx + dsNiceMatch]
/*
; windows:
; parameter 1 in rcx(deflate state s), param 2 in rdx (cur match)
; see http://weblogs.asp.net/oldnewthing/archive/2004/01/14/58579.aspx and
; http://msdn.microsoft.com/library/en-us/kmarch/hh/kmarch/64bitAMD_8e951dd2-ee77-4728-8702-55ce4b5dd24a.xml.asp
;
; All registers must be preserved across the call, except for
; rax, rcx, rdx, r8, r9, r10, and r11, which are scratch.
;
; gcc on macosx-linux:
; see http://www.x86-64.org/documentation/abi-0.99.pdf
; param 1 in rdi, param 2 in rsi
; rbx, rsp, rbp, r12 to r15 must be preserved
;;; Save registers that the compiler may be using, and adjust esp to
;;; make room for our stack frame.
;;; Retrieve the function arguments. r8d will hold cur_match
;;; throughout the entire function. edx will hold the pointer to the
;;; deflate_state structure during the function's setup (before
;;; entering the main loop.
; ms: parameter 1 in rcx (deflate_state* s), param 2 in edx -> r8 (cur match)
; mac: param 1 in rdi, param 2 rsi
; this clear high 32 bits of r8, which can be garbage in both r8 and rdx
*/
mov [save_rbx],rbx
mov [save_rbp],rbp
mov rcx,rdi
mov r8d,esi
mov [save_r12],r12
mov [save_r13],r13
mov [save_r14],r14
mov [save_r15],r15
//;;; uInt wmask = s->w_mask;
//;;; unsigned chain_length = s->max_chain_length;
//;;; if (s->prev_length >= s->good_match) {
//;;; chain_length >>= 2;
//;;; }
mov edi, prev_length
mov esi, good_match
mov eax, WMask
mov ebx, max_chain_length
cmp edi, esi
jl LastMatchGood
shr ebx, 2
LastMatchGood:
//;;; chainlen is decremented once beforehand so that the function can
//;;; use the sign flag instead of the zero flag for the exit test.
//;;; It is then shifted into the high word, to make room for the wmask
//;;; value, which it will always accompany.
dec ebx
shl ebx, 16
or ebx, eax
//;;; on zlib only
//;;; if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
mov eax, nice_match
mov [chainlenwmask], ebx
mov r10d, Lookahead
cmp r10d, eax
cmovnl r10d, eax
mov [nicematch],r10d
//;;; register Bytef *scan = s->window + s->strstart;
mov r10, window_ad
mov ebp, strstart
lea r13, [r10 + rbp]
//;;; Determine how many bytes the scan ptr is off from being
//;;; dword-aligned.
mov r9,r13
neg r13
and r13,3
//;;; IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
//;;; s->strstart - (IPos)MAX_DIST(s) : NIL;
mov eax, window_size
sub eax, MIN_LOOKAHEAD
xor edi,edi
sub ebp, eax
mov r11d, prev_length
cmovng ebp,edi
//;;; int best_len = s->prev_length;
//;;; Store the sum of s->window + best_len in esi locally, and in esi.
lea rsi,[r10+r11]
//;;; register ush scan_start = *(ushf*)scan;
//;;; register ush scan_end = *(ushf*)(scan+best_len-1);
//;;; Posf *prev = s->prev;
movzx r12d,word ptr [r9]
movzx ebx, word ptr [r9 + r11 - 1]
mov rdi, prev_ad
//;;; Jump into the main loop.
mov edx, [chainlenwmask]
cmp bx,word ptr [rsi + r8 - 1]
jz LookupLoopIsZero
LookupLoop1:
and r8d, edx
movzx r8d, word ptr [rdi + r8*2]
cmp r8d, ebp
jbe LeaveNow
sub edx, 0x00010000
BEFORE_JMP
js LeaveNow
AFTER_JMP
LoopEntry1:
cmp bx,word ptr [rsi + r8 - 1]
BEFORE_JMP
jz LookupLoopIsZero
AFTER_JMP
LookupLoop2:
and r8d, edx
movzx r8d, word ptr [rdi + r8*2]
cmp r8d, ebp
BEFORE_JMP
jbe LeaveNow
AFTER_JMP
sub edx, 0x00010000
BEFORE_JMP
js LeaveNow
AFTER_JMP
LoopEntry2:
cmp bx,word ptr [rsi + r8 - 1]
BEFORE_JMP
jz LookupLoopIsZero
AFTER_JMP
LookupLoop4:
and r8d, edx
movzx r8d, word ptr [rdi + r8*2]
cmp r8d, ebp
BEFORE_JMP
jbe LeaveNow
AFTER_JMP
sub edx, 0x00010000
BEFORE_JMP
js LeaveNow
AFTER_JMP
LoopEntry4:
cmp bx,word ptr [rsi + r8 - 1]
BEFORE_JMP
jnz LookupLoop1
jmp LookupLoopIsZero
AFTER_JMP
/*
;;; do {
;;; match = s->window + cur_match;
;;; if (*(ushf*)(match+best_len-1) != scan_end ||
;;; *(ushf*)match != scan_start) continue;
;;; [...]
;;; } while ((cur_match = prev[cur_match & wmask]) > limit
;;; && --chain_length != 0);
;;;
;;; Here is the inner loop of the function. The function will spend the
;;; majority of its time in this loop, and majority of that time will
;;; be spent in the first ten instructions.
;;;
;;; Within this loop:
;;; ebx = scanend
;;; r8d = curmatch
;;; edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
;;; esi = windowbestlen - i.e., (window + bestlen)
;;; edi = prev
;;; ebp = limit
*/
.balign 16
LookupLoop:
and r8d, edx
movzx r8d, word ptr [rdi + r8*2]
cmp r8d, ebp
BEFORE_JMP
jbe LeaveNow
AFTER_JMP
sub edx, 0x00010000
BEFORE_JMP
js LeaveNow
AFTER_JMP
LoopEntry:
cmp bx,word ptr [rsi + r8 - 1]
BEFORE_JMP
jnz LookupLoop1
AFTER_JMP
LookupLoopIsZero:
cmp r12w, word ptr [r10 + r8]
BEFORE_JMP
jnz LookupLoop1
AFTER_JMP
//;;; Store the current value of chainlen.
mov [chainlenwmask], edx
/*
;;; Point edi to the string under scrutiny, and esi to the string we
;;; are hoping to match it up with. In actuality, esi and edi are
;;; both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and edx is
;;; initialized to -(MAX_MATCH_8 - scanalign).
*/
lea rsi,[r8+r10]
mov rdx, 0xfffffffffffffef8 //; -(MAX_MATCH_8)
lea rsi, [rsi + r13 + 0x0108] //;MAX_MATCH_8]
lea rdi, [r9 + r13 + 0x0108] //;MAX_MATCH_8]
prefetcht1 [rsi+rdx]
prefetcht1 [rdi+rdx]
/*
;;; Test the strings for equality, 8 bytes at a time. At the end,
;;; adjust rdx so that it is offset to the exact byte that mismatched.
;;;
;;; We already know at this point that the first three bytes of the
;;; strings match each other, and they can be safely passed over before
;;; starting the compare loop. So what this code does is skip over 0-3
;;; bytes, as much as necessary in order to dword-align the edi
;;; pointer. (rsi will still be misaligned three times out of four.)
;;;
;;; It should be confessed that this loop usually does not represent
;;; much of the total running time. Replacing it with a more
;;; straightforward "rep cmpsb" would not drastically degrade
;;; performance.
*/
LoopCmps:
mov rax, [rsi + rdx]
xor rax, [rdi + rdx]
jnz LeaveLoopCmps
mov rax, [rsi + rdx + 8]
xor rax, [rdi + rdx + 8]
jnz LeaveLoopCmps8
mov rax, [rsi + rdx + 8+8]
xor rax, [rdi + rdx + 8+8]
jnz LeaveLoopCmps16
add rdx,8+8+8
BEFORE_JMP
jnz LoopCmps
jmp LenMaximum
AFTER_JMP
LeaveLoopCmps16: add rdx,8
LeaveLoopCmps8: add rdx,8
LeaveLoopCmps:
test eax, 0x0000FFFF
jnz LenLower
test eax,0xffffffff
jnz LenLower32
add rdx,4
shr rax,32
or ax,ax
BEFORE_JMP
jnz LenLower
AFTER_JMP
LenLower32:
shr eax,16
add rdx,2
LenLower:
sub al, 1
adc rdx, 0
//;;; Calculate the length of the match. If it is longer than MAX_MATCH,
//;;; then automatically accept it as the best possible match and leave.
lea rax, [rdi + rdx]
sub rax, r9
cmp eax, MAX_MATCH
BEFORE_JMP
jge LenMaximum
AFTER_JMP
/*
;;; If the length of the match is not longer than the best match we
;;; have so far, then forget it and return to the lookup loop.
;///////////////////////////////////
*/
cmp eax, r11d
jg LongerMatch
lea rsi,[r10+r11]
mov rdi, prev_ad
mov edx, [chainlenwmask]
BEFORE_JMP
jmp LookupLoop
AFTER_JMP
/*
;;; s->match_start = cur_match;
;;; best_len = len;
;;; if (len >= nice_match) break;
;;; scan_end = *(ushf*)(scan+best_len-1);
*/
LongerMatch:
mov r11d, eax
mov match_start, r8d
cmp eax, [nicematch]
BEFORE_JMP
jge LeaveNow
AFTER_JMP
lea rsi,[r10+rax]
movzx ebx, word ptr [r9 + rax - 1]
mov rdi, prev_ad
mov edx, [chainlenwmask]
BEFORE_JMP
jmp LookupLoop
AFTER_JMP
//;;; Accept the current string, with the maximum possible length.
LenMaximum:
mov r11d,MAX_MATCH
mov match_start, r8d
//;;; if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
//;;; return s->lookahead;
LeaveNow:
mov eax, Lookahead
cmp r11d, eax
cmovng eax, r11d
//;;; Restore the stack and return from whence we came.
// mov rsi,[save_rsi]
// mov rdi,[save_rdi]
mov rbx,[save_rbx]
mov rbp,[save_rbp]
mov r12,[save_r12]
mov r13,[save_r13]
mov r14,[save_r14]
mov r15,[save_r15]
ret 0
//; please don't remove this string !
//; Your can freely use gvmat64 in any free or commercial app
//; but it is far better don't remove the string in the binary!
// db 0dh,0ah,"asm686 with masm, optimised assembly code from Brian Raiter, written 1998, converted to amd 64 by Gilles Vollant 2005",0dh,0ah,0
match_init:
ret 0

1
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/infback9/README Normal file
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See infback9.h for what this is and how to use it.

615
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/infback9/infback9.c Normal file
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/* infback9.c -- inflate deflate64 data using a call-back interface
* Copyright (C) 1995-2008 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "infback9.h"
#include "inftree9.h"
#include "inflate9.h"
#define WSIZE 65536UL
/*
strm provides memory allocation functions in zalloc and zfree, or
Z_NULL to use the library memory allocation functions.
window is a user-supplied window and output buffer that is 64K bytes.
*/
int ZEXPORT inflateBack9Init_(strm, window, version, stream_size)
z_stream FAR *strm;
unsigned char FAR *window;
const char *version;
int stream_size;
{
struct inflate_state FAR *state;
if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
stream_size != (int)(sizeof(z_stream)))
return Z_VERSION_ERROR;
if (strm == Z_NULL || window == Z_NULL)
return Z_STREAM_ERROR;
strm->msg = Z_NULL; /* in case we return an error */
if (strm->zalloc == (alloc_func)0) {
strm->zalloc = zcalloc;
strm->opaque = (voidpf)0;
}
if (strm->zfree == (free_func)0) strm->zfree = zcfree;
state = (struct inflate_state FAR *)ZALLOC(strm, 1,
sizeof(struct inflate_state));
if (state == Z_NULL) return Z_MEM_ERROR;
Tracev((stderr, "inflate: allocated\n"));
strm->state = (voidpf)state;
state->window = window;
return Z_OK;
}
/*
Build and output length and distance decoding tables for fixed code
decoding.
*/
#ifdef MAKEFIXED
#include <stdio.h>
void makefixed9(void)
{
unsigned sym, bits, low, size;
code *next, *lenfix, *distfix;
struct inflate_state state;
code fixed[544];
/* literal/length table */
sym = 0;
while (sym < 144) state.lens[sym++] = 8;
while (sym < 256) state.lens[sym++] = 9;
while (sym < 280) state.lens[sym++] = 7;
while (sym < 288) state.lens[sym++] = 8;
next = fixed;
lenfix = next;
bits = 9;
inflate_table9(LENS, state.lens, 288, &(next), &(bits), state.work);
/* distance table */
sym = 0;
while (sym < 32) state.lens[sym++] = 5;
distfix = next;
bits = 5;
inflate_table9(DISTS, state.lens, 32, &(next), &(bits), state.work);
/* write tables */
puts(" /* inffix9.h -- table for decoding deflate64 fixed codes");
puts(" * Generated automatically by makefixed9().");
puts(" */");
puts("");
puts(" /* WARNING: this file should *not* be used by applications.");
puts(" It is part of the implementation of this library and is");
puts(" subject to change. Applications should only use zlib.h.");
puts(" */");
puts("");
size = 1U << 9;
printf(" static const code lenfix[%u] = {", size);
low = 0;
for (;;) {
if ((low % 6) == 0) printf("\n ");
printf("{%u,%u,%d}", lenfix[low].op, lenfix[low].bits,
lenfix[low].val);
if (++low == size) break;
putchar(',');
}
puts("\n };");
size = 1U << 5;
printf("\n static const code distfix[%u] = {", size);
low = 0;
for (;;) {
if ((low % 5) == 0) printf("\n ");
printf("{%u,%u,%d}", distfix[low].op, distfix[low].bits,
distfix[low].val);
if (++low == size) break;
putchar(',');
}
puts("\n };");
}
#endif /* MAKEFIXED */
/* Macros for inflateBack(): */
/* Clear the input bit accumulator */
#define INITBITS() \
do { \
hold = 0; \
bits = 0; \
} while (0)
/* Assure that some input is available. If input is requested, but denied,
then return a Z_BUF_ERROR from inflateBack(). */
#define PULL() \
do { \
if (have == 0) { \
have = in(in_desc, &next); \
if (have == 0) { \
next = Z_NULL; \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/* Get a byte of input into the bit accumulator, or return from inflateBack()
with an error if there is no input available. */
#define PULLBYTE() \
do { \
PULL(); \
have--; \
hold += (unsigned long)(*next++) << bits; \
bits += 8; \
} while (0)
/* Assure that there are at least n bits in the bit accumulator. If there is
not enough available input to do that, then return from inflateBack() with
an error. */
#define NEEDBITS(n) \
do { \
while (bits < (unsigned)(n)) \
PULLBYTE(); \
} while (0)
/* Return the low n bits of the bit accumulator (n <= 16) */
#define BITS(n) \
((unsigned)hold & ((1U << (n)) - 1))
/* Remove n bits from the bit accumulator */
#define DROPBITS(n) \
do { \
hold >>= (n); \
bits -= (unsigned)(n); \
} while (0)
/* Remove zero to seven bits as needed to go to a byte boundary */
#define BYTEBITS() \
do { \
hold >>= bits & 7; \
bits -= bits & 7; \
} while (0)
/* Assure that some output space is available, by writing out the window
if it's full. If the write fails, return from inflateBack() with a
Z_BUF_ERROR. */
#define ROOM() \
do { \
if (left == 0) { \
put = window; \
left = WSIZE; \
wrap = 1; \
if (out(out_desc, put, (unsigned)left)) { \
ret = Z_BUF_ERROR; \
goto inf_leave; \
} \
} \
} while (0)
/*
strm provides the memory allocation functions and window buffer on input,
and provides information on the unused input on return. For Z_DATA_ERROR
returns, strm will also provide an error message.
in() and out() are the call-back input and output functions. When
inflateBack() needs more input, it calls in(). When inflateBack() has
filled the window with output, or when it completes with data in the
window, it calls out() to write out the data. The application must not
change the provided input until in() is called again or inflateBack()
returns. The application must not change the window/output buffer until
inflateBack() returns.
in() and out() are called with a descriptor parameter provided in the
inflateBack() call. This parameter can be a structure that provides the
information required to do the read or write, as well as accumulated
information on the input and output such as totals and check values.
in() should return zero on failure. out() should return non-zero on
failure. If either in() or out() fails, than inflateBack() returns a
Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
was in() or out() that caused in the error. Otherwise, inflateBack()
returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
error, or Z_MEM_ERROR if it could not allocate memory for the state.
inflateBack() can also return Z_STREAM_ERROR if the input parameters
are not correct, i.e. strm is Z_NULL or the state was not initialized.
*/
int ZEXPORT inflateBack9(strm, in, in_desc, out, out_desc)
z_stream FAR *strm;
in_func in;
void FAR *in_desc;
out_func out;
void FAR *out_desc;
{
struct inflate_state FAR *state;
z_const unsigned char FAR *next; /* next input */
unsigned char FAR *put; /* next output */
unsigned have; /* available input */
unsigned long left; /* available output */
inflate_mode mode; /* current inflate mode */
int lastblock; /* true if processing last block */
int wrap; /* true if the window has wrapped */
unsigned char FAR *window; /* allocated sliding window, if needed */
unsigned long hold; /* bit buffer */
unsigned bits; /* bits in bit buffer */
unsigned extra; /* extra bits needed */
unsigned long length; /* literal or length of data to copy */
unsigned long offset; /* distance back to copy string from */
unsigned long copy; /* number of stored or match bytes to copy */
unsigned char FAR *from; /* where to copy match bytes from */
code const FAR *lencode; /* starting table for length/literal codes */
code const FAR *distcode; /* starting table for distance codes */
unsigned lenbits; /* index bits for lencode */
unsigned distbits; /* index bits for distcode */
code here; /* current decoding table entry */
code last; /* parent table entry */
unsigned len; /* length to copy for repeats, bits to drop */
int ret; /* return code */
static const unsigned short order[19] = /* permutation of code lengths */
{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
#include "inffix9.h"
/* Check that the strm exists and that the state was initialized */
if (strm == Z_NULL || strm->state == Z_NULL)
return Z_STREAM_ERROR;
state = (struct inflate_state FAR *)strm->state;
/* Reset the state */
strm->msg = Z_NULL;
mode = TYPE;
lastblock = 0;
wrap = 0;
window = state->window;
next = strm->next_in;
have = next != Z_NULL ? strm->avail_in : 0;
hold = 0;
bits = 0;
put = window;
left = WSIZE;
lencode = Z_NULL;
distcode = Z_NULL;
/* Inflate until end of block marked as last */
for (;;)
switch (mode) {
case TYPE:
/* determine and dispatch block type */
if (lastblock) {
BYTEBITS();
mode = DONE;
break;
}
NEEDBITS(3);
lastblock = BITS(1);
DROPBITS(1);
switch (BITS(2)) {
case 0: /* stored block */
Tracev((stderr, "inflate: stored block%s\n",
lastblock ? " (last)" : ""));
mode = STORED;
break;
case 1: /* fixed block */
lencode = lenfix;
lenbits = 9;
distcode = distfix;
distbits = 5;
Tracev((stderr, "inflate: fixed codes block%s\n",
lastblock ? " (last)" : ""));
mode = LEN; /* decode codes */
break;
case 2: /* dynamic block */
Tracev((stderr, "inflate: dynamic codes block%s\n",
lastblock ? " (last)" : ""));
mode = TABLE;
break;
case 3:
strm->msg = (char *)"invalid block type";
mode = BAD;
}
DROPBITS(2);
break;
case STORED:
/* get and verify stored block length */
BYTEBITS(); /* go to byte boundary */
NEEDBITS(32);
if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
strm->msg = (char *)"invalid stored block lengths";
mode = BAD;
break;
}
length = (unsigned)hold & 0xffff;
Tracev((stderr, "inflate: stored length %lu\n",
length));
INITBITS();
/* copy stored block from input to output */
while (length != 0) {
copy = length;
PULL();
ROOM();
if (copy > have) copy = have;
if (copy > left) copy = left;
zmemcpy(put, next, copy);
have -= copy;
next += copy;
left -= copy;
put += copy;
length -= copy;
}
Tracev((stderr, "inflate: stored end\n"));
mode = TYPE;
break;
case TABLE:
/* get dynamic table entries descriptor */
NEEDBITS(14);
state->nlen = BITS(5) + 257;
DROPBITS(5);
state->ndist = BITS(5) + 1;
DROPBITS(5);
state->ncode = BITS(4) + 4;
DROPBITS(4);
if (state->nlen > 286) {
strm->msg = (char *)"too many length symbols";
mode = BAD;
break;
}
Tracev((stderr, "inflate: table sizes ok\n"));
/* get code length code lengths (not a typo) */
state->have = 0;
while (state->have < state->ncode) {
NEEDBITS(3);
state->lens[order[state->have++]] = (unsigned short)BITS(3);
DROPBITS(3);
}
while (state->have < 19)
state->lens[order[state->have++]] = 0;
state->next = state->codes;
lencode = (code const FAR *)(state->next);
lenbits = 7;
ret = inflate_table9(CODES, state->lens, 19, &(state->next),
&(lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid code lengths set";
mode = BAD;
break;
}
Tracev((stderr, "inflate: code lengths ok\n"));
/* get length and distance code code lengths */
state->have = 0;
while (state->have < state->nlen + state->ndist) {
for (;;) {
here = lencode[BITS(lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.val < 16) {
NEEDBITS(here.bits);
DROPBITS(here.bits);
state->lens[state->have++] = here.val;
}
else {
if (here.val == 16) {
NEEDBITS(here.bits + 2);
DROPBITS(here.bits);
if (state->have == 0) {
strm->msg = (char *)"invalid bit length repeat";
mode = BAD;
break;
}
len = (unsigned)(state->lens[state->have - 1]);
copy = 3 + BITS(2);
DROPBITS(2);
}
else if (here.val == 17) {
NEEDBITS(here.bits + 3);
DROPBITS(here.bits);
len = 0;
copy = 3 + BITS(3);
DROPBITS(3);
}
else {
NEEDBITS(here.bits + 7);
DROPBITS(here.bits);
len = 0;
copy = 11 + BITS(7);
DROPBITS(7);
}
if (state->have + copy > state->nlen + state->ndist) {
strm->msg = (char *)"invalid bit length repeat";
mode = BAD;
break;
}
while (copy--)
state->lens[state->have++] = (unsigned short)len;
}
}
/* handle error breaks in while */
if (mode == BAD) break;
/* check for end-of-block code (better have one) */
if (state->lens[256] == 0) {
strm->msg = (char *)"invalid code -- missing end-of-block";
mode = BAD;
break;
}
/* build code tables -- note: do not change the lenbits or distbits
values here (9 and 6) without reading the comments in inftree9.h
concerning the ENOUGH constants, which depend on those values */
state->next = state->codes;
lencode = (code const FAR *)(state->next);
lenbits = 9;
ret = inflate_table9(LENS, state->lens, state->nlen,
&(state->next), &(lenbits), state->work);
if (ret) {
strm->msg = (char *)"invalid literal/lengths set";
mode = BAD;
break;
}
distcode = (code const FAR *)(state->next);
distbits = 6;
ret = inflate_table9(DISTS, state->lens + state->nlen,
state->ndist, &(state->next), &(distbits),
state->work);
if (ret) {
strm->msg = (char *)"invalid distances set";
mode = BAD;
break;
}
Tracev((stderr, "inflate: codes ok\n"));
mode = LEN;
case LEN:
/* get a literal, length, or end-of-block code */
for (;;) {
here = lencode[BITS(lenbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if (here.op && (here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = lencode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
length = (unsigned)here.val;
/* process literal */
if (here.op == 0) {
Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
"inflate: literal '%c'\n" :
"inflate: literal 0x%02x\n", here.val));
ROOM();
*put++ = (unsigned char)(length);
left--;
mode = LEN;
break;
}
/* process end of block */
if (here.op & 32) {
Tracevv((stderr, "inflate: end of block\n"));
mode = TYPE;
break;
}
/* invalid code */
if (here.op & 64) {
strm->msg = (char *)"invalid literal/length code";
mode = BAD;
break;
}
/* length code -- get extra bits, if any */
extra = (unsigned)(here.op) & 31;
if (extra != 0) {
NEEDBITS(extra);
length += BITS(extra);
DROPBITS(extra);
}
Tracevv((stderr, "inflate: length %lu\n", length));
/* get distance code */
for (;;) {
here = distcode[BITS(distbits)];
if ((unsigned)(here.bits) <= bits) break;
PULLBYTE();
}
if ((here.op & 0xf0) == 0) {
last = here;
for (;;) {
here = distcode[last.val +
(BITS(last.bits + last.op) >> last.bits)];
if ((unsigned)(last.bits + here.bits) <= bits) break;
PULLBYTE();
}
DROPBITS(last.bits);
}
DROPBITS(here.bits);
if (here.op & 64) {
strm->msg = (char *)"invalid distance code";
mode = BAD;
break;
}
offset = (unsigned)here.val;
/* get distance extra bits, if any */
extra = (unsigned)(here.op) & 15;
if (extra != 0) {
NEEDBITS(extra);
offset += BITS(extra);
DROPBITS(extra);
}
if (offset > WSIZE - (wrap ? 0: left)) {
strm->msg = (char *)"invalid distance too far back";
mode = BAD;
break;
}
Tracevv((stderr, "inflate: distance %lu\n", offset));
/* copy match from window to output */
do {
ROOM();
copy = WSIZE - offset;
if (copy < left) {
from = put + copy;
copy = left - copy;
}
else {
from = put - offset;
copy = left;
}
if (copy > length) copy = length;
length -= copy;
left -= copy;
do {
*put++ = *from++;
} while (--copy);
} while (length != 0);
break;
case DONE:
/* inflate stream terminated properly -- write leftover output */
ret = Z_STREAM_END;
if (left < WSIZE) {
if (out(out_desc, window, (unsigned)(WSIZE - left)))
ret = Z_BUF_ERROR;
}
goto inf_leave;
case BAD:
ret = Z_DATA_ERROR;
goto inf_leave;
default: /* can't happen, but makes compilers happy */
ret = Z_STREAM_ERROR;
goto inf_leave;
}
/* Return unused input */
inf_leave:
strm->next_in = next;
strm->avail_in = have;
return ret;
}
int ZEXPORT inflateBack9End(strm)
z_stream FAR *strm;
{
if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
return Z_STREAM_ERROR;
ZFREE(strm, strm->state);
strm->state = Z_NULL;
Tracev((stderr, "inflate: end\n"));
return Z_OK;
}

37
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/infback9/infback9.h Normal file
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/* infback9.h -- header for using inflateBack9 functions
* Copyright (C) 2003 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/*
* This header file and associated patches provide a decoder for PKWare's
* undocumented deflate64 compression method (method 9). Use with infback9.c,
* inftree9.h, inftree9.c, and inffix9.h. These patches are not supported.
* This should be compiled with zlib, since it uses zutil.h and zutil.o.
* This code has not yet been tested on 16-bit architectures. See the
* comments in zlib.h for inflateBack() usage. These functions are used
* identically, except that there is no windowBits parameter, and a 64K
* window must be provided. Also if int's are 16 bits, then a zero for
* the third parameter of the "out" function actually means 65536UL.
* zlib.h must be included before this header file.
*/
#ifdef __cplusplus
extern "C" {
#endif
ZEXTERN int ZEXPORT inflateBack9 OF((z_stream FAR *strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc));
ZEXTERN int ZEXPORT inflateBack9End OF((z_stream FAR *strm));
ZEXTERN int ZEXPORT inflateBack9Init_ OF((z_stream FAR *strm,
unsigned char FAR *window,
const char *version,
int stream_size));
#define inflateBack9Init(strm, window) \
inflateBack9Init_((strm), (window), \
ZLIB_VERSION, sizeof(z_stream))
#ifdef __cplusplus
}
#endif

107
libs/EXTERNAL/tcl8.6.12/compat/zlib/contrib/infback9/inffix9.h Normal file
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/* inffix9.h -- table for decoding deflate64 fixed codes
* Generated automatically by makefixed9().
*/
/* WARNING: this file should *not* be used by applications.
It is part of the implementation of this library and is
subject to change. Applications should only use zlib.h.
*/
static const code lenfix[512] = {
{96,7,0},{0,8,80},{0,8,16},{132,8,115},{130,7,31},{0,8,112},
{0,8,48},{0,9,192},{128,7,10},{0,8,96},{0,8,32},{0,9,160},
{0,8,0},{0,8,128},{0,8,64},{0,9,224},{128,7,6},{0,8,88},
{0,8,24},{0,9,144},{131,7,59},{0,8,120},{0,8,56},{0,9,208},
{129,7,17},{0,8,104},{0,8,40},{0,9,176},{0,8,8},{0,8,136},
{0,8,72},{0,9,240},{128,7,4},{0,8,84},{0,8,20},{133,8,227},
{131,7,43},{0,8,116},{0,8,52},{0,9,200},{129,7,13},{0,8,100},
{0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},
{128,7,8},{0,8,92},{0,8,28},{0,9,152},{132,7,83},{0,8,124},
{0,8,60},{0,9,216},{130,7,23},{0,8,108},{0,8,44},{0,9,184},
{0,8,12},{0,8,140},{0,8,76},{0,9,248},{128,7,3},{0,8,82},
{0,8,18},{133,8,163},{131,7,35},{0,8,114},{0,8,50},{0,9,196},
{129,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},{0,8,130},
{0,8,66},{0,9,228},{128,7,7},{0,8,90},{0,8,26},{0,9,148},
{132,7,67},{0,8,122},{0,8,58},{0,9,212},{130,7,19},{0,8,106},
{0,8,42},{0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},
{128,7,5},{0,8,86},{0,8,22},{65,8,0},{131,7,51},{0,8,118},
{0,8,54},{0,9,204},{129,7,15},{0,8,102},{0,8,38},{0,9,172},
{0,8,6},{0,8,134},{0,8,70},{0,9,236},{128,7,9},{0,8,94},
{0,8,30},{0,9,156},{132,7,99},{0,8,126},{0,8,62},{0,9,220},
{130,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
{0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{133,8,131},
{130,7,31},{0,8,113},{0,8,49},{0,9,194},{128,7,10},{0,8,97},
{0,8,33},{0,9,162},{0,8,1},{0,8,129},{0,8,65},{0,9,226},
{128,7,6},{0,8,89},{0,8,25},{0,9,146},{131,7,59},{0,8,121},
{0,8,57},{0,9,210},{129,7,17},{0,8,105},{0,8,41},{0,9,178},
{0,8,9},{0,8,137},{0,8,73},{0,9,242},{128,7,4},{0,8,85},
{0,8,21},{144,8,3},{131,7,43},{0,8,117},{0,8,53},{0,9,202},
{129,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},
{0,8,69},{0,9,234},{128,7,8},{0,8,93},{0,8,29},{0,9,154},
{132,7,83},{0,8,125},{0,8,61},{0,9,218},{130,7,23},{0,8,109},
{0,8,45},{0,9,186},{0,8,13},{0,8,141},{0,8,77},{0,9,250},
{128,7,3},{0,8,83},{0,8,19},{133,8,195},{131,7,35},{0,8,115},
{0,8,51},{0,9,198},{129,7,11},{0,8,99},{0,8,35},{0,9,166},
{0,8,3},{0,8,131},{0,8,67},{0,9,230},{128,7,7},{0,8,91},
{0,8,27},{0,9,150},{132,7,67},{0,8,123},{0,8,59},{0,9,214},
{130,7,19},{0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},
{0,8,75},{0,9,246},{128,7,5},{0,8,87},{0,8,23},{77,8,0},
{131,7,51},{0,8,119},{0,8,55},{0,9,206},{129,7,15},{0,8,103},
{0,8,39},{0,9,174},{0,8,7},{0,8,135},{0,8,71},{0,9,238},
{128,7,9},{0,8,95},{0,8,31},{0,9,158},{132,7,99},{0,8,127},
{0,8,63},{0,9,222},{130,7,27},{0,8,111},{0,8,47},{0,9,190},
{0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},
{0,8,16},{132,8,115},{130,7,31},{0,8,112},{0,8,48},{0,9,193},
{128,7,10},{0,8,96},{0,8,32},{0,9,161},{0,8,0},{0,8,128},
{0,8,64},{0,9,225},{128,7,6},{0,8,88},{0,8,24},{0,9,145},
{131,7,59},{0,8,120},{0,8,56},{0,9,209},{129,7,17},{0,8,104},
{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},{0,9,241},
{128,7,4},{0,8,84},{0,8,20},{133,8,227},{131,7,43},{0,8,116},
{0,8,52},{0,9,201},{129,7,13},{0,8,100},{0,8,36},{0,9,169},
{0,8,4},{0,8,132},{0,8,68},{0,9,233},{128,7,8},{0,8,92},
{0,8,28},{0,9,153},{132,7,83},{0,8,124},{0,8,60},{0,9,217},
{130,7,23},{0,8,108},{0,8,44},{0,9,185},{0,8,12},{0,8,140},
{0,8,76},{0,9,249},{128,7,3},{0,8,82},{0,8,18},{133,8,163},
{131,7,35},{0,8,114},{0,8,50},{0,9,197},{129,7,11},{0,8,98},
{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
{128,7,7},{0,8,90},{0,8,26},{0,9,149},{132,7,67},{0,8,122},
{0,8,58},{0,9,213},{130,7,19},{0,8,106},{0,8,42},{0,9,181},
{0,8,10},{0,8,138},{0,8,74},{0,9,245},{128,7,5},{0,8,86},
{0,8,22},{65,8,0},{131,7,51},{0,8,118},{0,8,54},{0,9,205},
{129,7,15},{0,8,102},{0,8,38},{0,9,173},{0,8,6},{0,8,134},
{0,8,70},{0,9,237},{128,7,9},{0,8,94},{0,8,30},{0,9,157},
{132,7,99},{0,8,126},{0,8,62},{0,9,221},{130,7,27},{0,8,110},
{0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},
{96,7,0},{0,8,81},{0,8,17},{133,8,131},{130,7,31},{0,8,113},
{0,8,49},{0,9,195},{128,7,10},{0,8,97},{0,8,33},{0,9,163},
{0,8,1},{0,8,129},{0,8,65},{0,9,227},{128,7,6},{0,8,89},
{0,8,25},{0,9,147},{131,7,59},{0,8,121},{0,8,57},{0,9,211},
{129,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},{0,8,137},
{0,8,73},{0,9,243},{128,7,4},{0,8,85},{0,8,21},{144,8,3},
{131,7,43},{0,8,117},{0,8,53},{0,9,203},{129,7,13},{0,8,101},
{0,8,37},{0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},
{128,7,8},{0,8,93},{0,8,29},{0,9,155},{132,7,83},{0,8,125},
{0,8,61},{0,9,219},{130,7,23},{0,8,109},{0,8,45},{0,9,187},
{0,8,13},{0,8,141},{0,8,77},{0,9,251},{128,7,3},{0,8,83},
{0,8,19},{133,8,195},{131,7,35},{0,8,115},{0,8,51},{0,9,199},
{129,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
{0,8,67},{0,9,231},{128,7,7},{0,8,91},{0,8,27},{0,9,151},
{132,7,67},{0,8,123},{0,8,59},{0,9,215},{130,7,19},{0,8,107},
{0,8,43},{0,9,183},{0,8,11},{0,8,139},{0,8,75},{0,9,247},
{128,7,5},{0,8,87},{0,8,23},{77,8,0},{131,7,51},{0,8,119},
{0,8,55},{0,9,207},{129,7,15},{0,8,103},{0,8,39},{0,9,175},
{0,8,7},{0,8,135},{0,8,71},{0,9,239},{128,7,9},{0,8,95},
{0,8,31},{0,9,159},{132,7,99},{0,8,127},{0,8,63},{0,9,223},
{130,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},
{0,8,79},{0,9,255}
};
static const code distfix[32] = {
{128,5,1},{135,5,257},{131,5,17},{139,5,4097},{129,5,5},
{137,5,1025},{133,5,65},{141,5,16385},{128,5,3},{136,5,513},
{132,5,33},{140,5,8193},{130,5,9},{138,5,2049},{134,5,129},
{142,5,32769},{128,5,2},{135,5,385},{131,5,25},{139,5,6145},
{129,5,7},{137,5,1537},{133,5,97},{141,5,24577},{128,5,4},
{136,5,769},{132,5,49},{140,5,12289},{130,5,13},{138,5,3073},
{134,5,193},{142,5,49153}
};

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/* inflate9.h -- internal inflate state definition
* Copyright (C) 1995-2003 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* Possible inflate modes between inflate() calls */
typedef enum {
TYPE, /* i: waiting for type bits, including last-flag bit */
STORED, /* i: waiting for stored size (length and complement) */
TABLE, /* i: waiting for dynamic block table lengths */
LEN, /* i: waiting for length/lit code */
DONE, /* finished check, done -- remain here until reset */
BAD /* got a data error -- remain here until reset */
} inflate_mode;
/*
State transitions between above modes -
(most modes can go to the BAD mode -- not shown for clarity)
Read deflate blocks:
TYPE -> STORED or TABLE or LEN or DONE
STORED -> TYPE
TABLE -> LENLENS -> CODELENS -> LEN
Read deflate codes:
LEN -> LEN or TYPE
*/
/* state maintained between inflate() calls. Approximately 7K bytes. */
struct inflate_state {
/* sliding window */
unsigned char FAR *window; /* allocated sliding window, if needed */
/* dynamic table building */
unsigned ncode; /* number of code length code lengths */
unsigned nlen; /* number of length code lengths */
unsigned ndist; /* number of distance code lengths */
unsigned have; /* number of code lengths in lens[] */
code FAR *next; /* next available space in codes[] */
unsigned short lens[320]; /* temporary storage for code lengths */
unsigned short work[288]; /* work area for code table building */
code codes[ENOUGH]; /* space for code tables */
};

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/* inftree9.c -- generate Huffman trees for efficient decoding
* Copyright (C) 1995-2017 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
#include "inftree9.h"
#define MAXBITS 15
const char inflate9_copyright[] =
" inflate9 1.2.11 Copyright 1995-2017 Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
include such an acknowledgment, I would appreciate that you keep this
copyright string in the executable of your product.
*/
/*
Build a set of tables to decode the provided canonical Huffman code.
The code lengths are lens[0..codes-1]. The result starts at *table,
whose indices are 0..2^bits-1. work is a writable array of at least
lens shorts, which is used as a work area. type is the type of code
to be generated, CODES, LENS, or DISTS. On return, zero is success,
-1 is an invalid code, and +1 means that ENOUGH isn't enough. table
on return points to the next available entry's address. bits is the
requested root table index bits, and on return it is the actual root
table index bits. It will differ if the request is greater than the
longest code or if it is less than the shortest code.
*/
int inflate_table9(type, lens, codes, table, bits, work)
codetype type;
unsigned short FAR *lens;
unsigned codes;
code FAR * FAR *table;
unsigned FAR *bits;
unsigned short FAR *work;
{
unsigned len; /* a code's length in bits */
unsigned sym; /* index of code symbols */
unsigned min, max; /* minimum and maximum code lengths */
unsigned root; /* number of index bits for root table */
unsigned curr; /* number of index bits for current table */
unsigned drop; /* code bits to drop for sub-table */
int left; /* number of prefix codes available */
unsigned used; /* code entries in table used */
unsigned huff; /* Huffman code */
unsigned incr; /* for incrementing code, index */
unsigned fill; /* index for replicating entries */
unsigned low; /* low bits for current root entry */
unsigned mask; /* mask for low root bits */
code this; /* table entry for duplication */
code FAR *next; /* next available space in table */
const unsigned short FAR *base; /* base value table to use */
const unsigned short FAR *extra; /* extra bits table to use */
int end; /* use base and extra for symbol > end */
unsigned short count[MAXBITS+1]; /* number of codes of each length */
unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
static const unsigned short lbase[31] = { /* Length codes 257..285 base */
3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17,
19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115,
131, 163, 195, 227, 3, 0, 0};
static const unsigned short lext[31] = { /* Length codes 257..285 extra */
128, 128, 128, 128, 128, 128, 128, 128, 129, 129, 129, 129,
130, 130, 130, 130, 131, 131, 131, 131, 132, 132, 132, 132,
133, 133, 133, 133, 144, 77, 202};
static const unsigned short dbase[32] = { /* Distance codes 0..31 base */
1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49,
65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073,
4097, 6145, 8193, 12289, 16385, 24577, 32769, 49153};
static const unsigned short dext[32] = { /* Distance codes 0..31 extra */
128, 128, 128, 128, 129, 129, 130, 130, 131, 131, 132, 132,
133, 133, 134, 134, 135, 135, 136, 136, 137, 137, 138, 138,
139, 139, 140, 140, 141, 141, 142, 142};
/*
Process a set of code lengths to create a canonical Huffman code. The
code lengths are lens[0..codes-1]. Each length corresponds to the
symbols 0..codes-1. The Huffman code is generated by first sorting the
symbols by length from short to long, and retaining the symbol order
for codes with equal lengths. Then the code starts with all zero bits
for the first code of the shortest length, and the codes are integer
increments for the same length, and zeros are appended as the length
increases. For the deflate format, these bits are stored backwards
from their more natural integer increment ordering, and so when the
decoding tables are built in the large loop below, the integer codes
are incremented backwards.
This routine assumes, but does not check, that all of the entries in
lens[] are in the range 0..MAXBITS. The caller must assure this.
1..MAXBITS is interpreted as that code length. zero means that that
symbol does not occur in this code.
The codes are sorted by computing a count of codes for each length,
creating from that a table of starting indices for each length in the
sorted table, and then entering the symbols in order in the sorted
table. The sorted table is work[], with that space being provided by
the caller.
The length counts are used for other purposes as well, i.e. finding
the minimum and maximum length codes, determining if there are any
codes at all, checking for a valid set of lengths, and looking ahead
at length counts to determine sub-table sizes when building the
decoding tables.
*/
/* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
for (len = 0; len <= MAXBITS; len++)
count[len] = 0;
for (sym = 0; sym < codes; sym++)
count[lens[sym]]++;
/* bound code lengths, force root to be within code lengths */
root = *bits;
for (max = MAXBITS; max >= 1; max--)
if (count[max] != 0) break;
if (root > max) root = max;
if (max == 0) return -1; /* no codes! */
for (min = 1; min <= MAXBITS; min++)
if (count[min] != 0) break;
if (root < min) root = min;
/* check for an over-subscribed or incomplete set of lengths */
left = 1;
for (len = 1; len <= MAXBITS; len++) {
left <<= 1;
left -= count[len];
if (left < 0) return -1; /* over-subscribed */
}
if (left > 0 && (type == CODES || max != 1))
return -1; /* incomplete set */
/* generate offsets into symbol table for each length for sorting */
offs[1] = 0;
for (len = 1; len < MAXBITS; len++)
offs[len + 1] = offs[len] + count[len];
/* sort symbols by length, by symbol order within each length */
for (sym = 0; sym < codes; sym++)
if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
/*
Create and fill in decoding tables. In this loop, the table being
filled is at next and has curr index bits. The code being used is huff
with length len. That code is converted to an index by dropping drop
bits off of the bottom. For codes where len is less than drop + curr,
those top drop + curr - len bits are incremented through all values to
fill the table with replicated entries.
root is the number of index bits for the root table. When len exceeds
root, sub-tables are created pointed to by the root entry with an index
of the low root bits of huff. This is saved in low to check for when a
new sub-table should be started. drop is zero when the root table is
being filled, and drop is root when sub-tables are being filled.
When a new sub-table is needed, it is necessary to look ahead in the
code lengths to determine what size sub-table is needed. The length
counts are used for this, and so count[] is decremented as codes are
entered in the tables.
used keeps track of how many table entries have been allocated from the
provided *table space. It is checked for LENS and DIST tables against
the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
the initial root table size constants. See the comments in inftree9.h
for more information.
sym increments through all symbols, and the loop terminates when
all codes of length max, i.e. all codes, have been processed. This
routine permits incomplete codes, so another loop after this one fills
in the rest of the decoding tables with invalid code markers.
*/
/* set up for code type */
switch (type) {
case CODES:
base = extra = work; /* dummy value--not used */
end = 19;
break;
case LENS:
base = lbase;
base -= 257;
extra = lext;
extra -= 257;
end = 256;
break;
default: /* DISTS */
base = dbase;
extra = dext;
end = -1;
}
/* initialize state for loop */
huff = 0; /* starting code */
sym = 0; /* starting code symbol */
len = min; /* starting code length */
next = *table; /* current table to fill in */
curr = root; /* current table index bits */
drop = 0; /* current bits to drop from code for index */
low = (unsigned)(-1); /* trigger new sub-table when len > root */
used = 1U << root; /* use root table entries */
mask = used - 1; /* mask for comparing low */
/* check available table space */
if ((type == LENS && used >= ENOUGH_LENS) ||
(type == DISTS && used >= ENOUGH_DISTS))
return 1;
/* process all codes and make table entries */
for (;;) {
/* create table entry */
this.bits = (unsigned char)(len - drop);
if ((int)(work[sym]) < end) {
this.op = (unsigned char)0;
this.val = work[sym];
}
else if ((int)(work[sym]) > end) {
this.op = (unsigned char)(extra[work[sym]]);
this.val = base[work[sym]];
}
else {
this.op = (unsigned char)(32 + 64); /* end of block */
this.val = 0;
}
/* replicate for those indices with low len bits equal to huff */
incr = 1U << (len - drop);
fill = 1U << curr;
do {
fill -= incr;
next[(huff >> drop) + fill] = this;
} while (fill != 0);
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
if (incr != 0) {
huff &= incr - 1;
huff += incr;
}
else
huff = 0;
/* go to next symbol, update count, len */
sym++;
if (--(count[len]) == 0) {
if (len == max) break;
len = lens[work[sym]];
}
/* create new sub-table if needed */
if (len > root && (huff & mask) != low) {
/* if first time, transition to sub-tables */
if (drop == 0)
drop = root;
/* increment past last table */
next += 1U << curr;
/* determine length of next table */
curr = len - drop;
left = (int)(1 << curr);
while (curr + drop < max) {
left -= count[curr + drop];
if (left <= 0) break;
curr++;
left <<= 1;
}
/* check for enough space */
used += 1U << curr;
if ((type == LENS && used >= ENOUGH_LENS) ||
(type == DISTS && used >= ENOUGH_DISTS))
return 1;
/* point entry in root table to sub-table */
low = huff & mask;
(*table)[low].op = (unsigned char)curr;
(*table)[low].bits = (unsigned char)root;
(*table)[low].val = (unsigned short)(next - *table);
}
}
/*
Fill in rest of table for incomplete codes. This loop is similar to the
loop above in incrementing huff for table indices. It is assumed that
len is equal to curr + drop, so there is no loop needed to increment
through high index bits. When the current sub-table is filled, the loop
drops back to the root table to fill in any remaining entries there.
*/
this.op = (unsigned char)64; /* invalid code marker */
this.bits = (unsigned char)(len - drop);
this.val = (unsigned short)0;
while (huff != 0) {
/* when done with sub-table, drop back to root table */
if (drop != 0 && (huff & mask) != low) {
drop = 0;
len = root;
next = *table;
curr = root;
this.bits = (unsigned char)len;
}
/* put invalid code marker in table */
next[huff >> drop] = this;
/* backwards increment the len-bit code huff */
incr = 1U << (len - 1);
while (huff & incr)
incr >>= 1;
if (incr != 0) {
huff &= incr - 1;
huff += incr;
}
else
huff = 0;
}
/* set return parameters */
*table += used;
*bits = root;
return 0;
}

61
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/* inftree9.h -- header to use inftree9.c
* Copyright (C) 1995-2008 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
/* Structure for decoding tables. Each entry provides either the
information needed to do the operation requested by the code that
indexed that table entry, or it provides a pointer to another
table that indexes more bits of the code. op indicates whether
the entry is a pointer to another table, a literal, a length or
distance, an end-of-block, or an invalid code. For a table
pointer, the low four bits of op is the number of index bits of
that table. For a length or distance, the low four bits of op
is the number of extra bits to get after the code. bits is
the number of bits in this code or part of the code to drop off
of the bit buffer. val is the actual byte to output in the case
of a literal, the base length or distance, or the offset from
the current table to the next table. Each entry is four bytes. */
typedef struct {
unsigned char op; /* operation, extra bits, table bits */
unsigned char bits; /* bits in this part of the code */
unsigned short val; /* offset in table or code value */
} code;
/* op values as set by inflate_table():
00000000 - literal
0000tttt - table link, tttt != 0 is the number of table index bits
100eeeee - length or distance, eeee is the number of extra bits
01100000 - end of block
01000000 - invalid code
*/
/* Maximum size of the dynamic table. The maximum number of code structures is
1446, which is the sum of 852 for literal/length codes and 594 for distance
codes. These values were found by exhaustive searches using the program
examples/enough.c found in the zlib distribtution. The arguments to that
program are the number of symbols, the initial root table size, and the
maximum bit length of a code. "enough 286 9 15" for literal/length codes
returns returns 852, and "enough 32 6 15" for distance codes returns 594.
The initial root table size (9 or 6) is found in the fifth argument of the
inflate_table() calls in infback9.c. If the root table size is changed,
then these maximum sizes would be need to be recalculated and updated. */
#define ENOUGH_LENS 852
#define ENOUGH_DISTS 594
#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
/* Type of code to build for inflate_table9() */
typedef enum {
CODES,
LENS,
DISTS
} codetype;
extern int inflate_table9 OF((codetype type, unsigned short FAR *lens,
unsigned codes, code FAR * FAR *table,
unsigned FAR *bits, unsigned short FAR *work));

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