Merge remote-tracking branch 'upstream/master' into cmn/tls-stream

Instead of having to guess about how to make the TLS stream safe on the given
platform, we can use a managed one we implement ourselves and tell libgit2 to
use that.

.gitignore

@@ -1,4 +0,0 @@
-/static-build/
-/dynamic-build/
-
-go.*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/libgit2"]
+	path = vendor/libgit2
+	url = https://github.com/libgit2/libgit2

.travis.yml

@@ -0,0 +1,19 @@
+language: go
+
+go:
+  - 1.5
+  - 1.6
+  - 1.7
+  - tip
+
+script: make test-static
+
+matrix:
+  allow_failures:
+    - go: tip
+
+branches:
+  only:
+  - master
+  - /v\d+/
+  - next

Build_bundled_static.go

@@ -1,17 +0,0 @@
-//go:build static && !system_libgit2
-// +build static,!system_libgit2
-
-package git
-
-/*
-#cgo windows CFLAGS: -I${SRCDIR}/static-build/install/include/
-#cgo windows LDFLAGS: -L${SRCDIR}/static-build/install/lib/ -lgit2 -lwinhttp -lws2_32 -lole32 -lrpcrt4 -lcrypt32
-#cgo !windows pkg-config: --static ${SRCDIR}/static-build/install/lib/pkgconfig/libgit2.pc
-#cgo CFLAGS: -DLIBGIT2_STATIC
-#include <git2.h>
-
-#if LIBGIT2_VER_MAJOR != 1 || LIBGIT2_VER_MINOR < 5 || LIBGIT2_VER_MINOR > 5
-# error "Invalid libgit2 version; this libgit2 supports libgit2 between v1.5.0 and v1.5.0"
-#endif
-*/
-import "C"

Build_system_dynamic.go

@@ -1,14 +0,0 @@
-//go:build !static
-// +build !static
-
-package git
-
-/*
-#cgo pkg-config: libgit2
-#cgo CFLAGS: -DLIBGIT2_DYNAMIC -I/opt/libgit2/include
-#cgo LDFLAGS: -L/opt/libgit2 -lgit2
-#include <git2.h>
-
-
-*/
-import "C"

Build_system_static.go

@@ -1,15 +0,0 @@
-//go:build static && system_libgit2
-// +build static,system_libgit2
-
-package git
-
-/*
-#cgo pkg-config: libgit2 --static
-#cgo CFLAGS: -DLIBGIT2_STATIC
-#include <git2.h>
-
-#if LIBGIT2_VER_MAJOR != 1 || LIBGIT2_VER_MINOR < 5 || LIBGIT2_VER_MINOR > 5
-# error "Invalid libgit2 version; this libgit2 supports libgit2 between v1.5.0 and v1.5.0"
-#endif
-*/
-import "C"

LICENSE

@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2013 The libgit2 contributors
+Copyright (c) 2013 The git2go contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,70 +1,21 @@
-TEST_ARGS ?= --count=1
+default: test
 
-PKG_CONFIG_PATH=/opt/libgit2/
-
-default: goimports test
-
-goimports:
-	goimports -w *.go
-
-generate: static-build/install/lib/libgit2.a
-	go generate --tags "static" ./...
-
-# System library
-# ==============
-# This uses whatever version of libgit2 can be found in the system.
-test:
-	-go-mod-clean # go install go.wit.com/apps/go-mod-clean@latest
+test: build-libgit2
 	go run script/check-MakeGitError-thread-lock.go
-	LD_LIBRARY_PATH=/opt/libgit2 PKG_CONFIG_PATH=/opt/libgit2/ go test -v -x $(TEST_ARGS) ./...
+	go test ./...
 
-add-remote:
-	git remote add git2go https://github.com/libgit2/git2go.git
-
-install:
+install: build-libgit2
 	go install ./...
 
-clean:
-	rm go.*
-
-# Bundled dynamic library
-# =======================
-# In order to avoid having to manipulate `git_dynamic.go`, which would prevent
-# the system-wide libgit2.so from being used in a sort of ergonomic way, this
-# instead moves the complexity of overriding the paths so that the built
-# libraries can be found by the build and tests.
-.PHONY: build-libgit2-dynamic
-build-libgit2-dynamic:
-	./script/build-libgit2-dynamic.sh
-
-dynamic-build/install/lib/libgit2.so:
-	./script/build-libgit2-dynamic.sh
-
-test-dynamic: dynamic-build/install/lib/libgit2.so
-	PKG_CONFIG_PATH=dynamic-build/install/lib/pkgconfig \
-			go run script/check-MakeGitError-thread-lock.go
-	PKG_CONFIG_PATH=dynamic-build/install/lib/pkgconfig \
-			LD_LIBRARY_PATH=dynamic-build/install/lib \
-			go test $(TEST_ARGS) ./...
-
-install-dynamic: dynamic-build/install/lib/libgit2.so
-	PKG_CONFIG_PATH=dynamic-build/install/lib/pkgconfig \
-			go install ./...
-
-# Bundled static library
-# ======================
-# This is mostly used in tests, but can also be used to provide a
-# statically-linked library with the bundled version of libgit2.
-.PHONY: build-libgit2-static
-build-libgit2-static:
+build-libgit2:
 	./script/build-libgit2-static.sh
 
-static-build/install/lib/libgit2.a:
-	./script/build-libgit2-static.sh
-
-test-static: static-build/install/lib/libgit2.a
+static: build-libgit2
 	go run script/check-MakeGitError-thread-lock.go
-	go test --tags "static" $(TEST_ARGS) ./...
+	go test --tags "static" ./...
 
-install-static: static-build/install/lib/libgit2.a
+install-static: build-libgit2
 	go install --tags "static" ./...
+
+test-static: build-libgit2
+	go test --tags "static" ./...

README.md

@@ -1,69 +1,69 @@
-GO libgit2
+git2go
 ======
-[![GoDoc](https://godoc.org/go.wit.com/lib/libgit2?status.svg)](http://godoc.org/go.wit.com/lib/libgit2) [![Build Status](https://travis-ci.org/libgit2/libgit2.svg?branch=main)](https://travis-ci.org/libgit2/libgit2)
+[![GoDoc](https://godoc.org/github.com/libgit2/git2go?status.svg)](http://godoc.org/github.com/libgit2/git2go) [![Build Status](https://travis-ci.org/libgit2/git2go.svg?branch=master)](https://travis-ci.org/libgit2/git2go)
 
 Go bindings for [libgit2](http://libgit2.github.com/).
 
-### Updated 2024/12/16
+### Which branch to use
 
-### Which Go version to use
+The numbered branches work against the version of libgit2 as specified by their number. You can import them in your project via gopkg.in, e.g. if you have libgit2 v0.25 installed you'd import with
 
-* This package is updated to work against libgit2 version 1.8 on Debian sid
-* There is one line commented out which needs to be fixed in remote.go
-* some of the tests seem to run
+    import "gopkg.in/libgit2/git2go.v25"
 
-```sh
-go install go.wit.com/apps/go-clone@latest
-go install go.wit.com/apps/go-mod-clean@latest
-go-clone --recusive go.wit.com/lib/libgit2
-```
+which will ensure there are no sudden changes to the API.
 
-
-### Which branch to send Pull requests to
-
-TODO: not sure yet
+The `master` branch follows the tip of libgit2 itself (with some lag) and as such has no guarantees on its own API nor does it have expectations the stability of libgit2's. Thus this only supports statically linking against libgit2.
 
 Installing
 ----------
 
 This project wraps the functionality provided by libgit2. It thus needs it in order to perform the work.
 
-This project wraps the functionality provided by libgit2. If you're using a versioned branch, install it to your system via your system's package manager and then install libgit2.
+This project wraps the functionality provided by libgit2. If you're using a versioned branch, install it to your system via your system's package manager and then install git2go.
 
 
 ### Versioned branch, dynamic linking
 
-When linking dynamically against a released version of libgit2, install it via your system's package manager. CGo will take care of finding its pkg-config file and set up the linking. Import via Go modules, e.g. to work against libgit2 v1.2
+When linking dynamically against a released version of libgit2, install it via your system's package manager. CGo will take care of finding its pkg-config file and set up the linking. Import via gopkg.in, e.g. to work against libgit2 v0.25
 
-```go
-    goimports -w *.go
-```
+    import "gopkg.in/libgit2/git2go.v25"
+
+### Master branch, or static linking
+
+If using `master` or building a branch statically, we need to build libgit2 first. In order to build it, you need `cmake`, `pkg-config` and a C compiler. You will also need the development packages for OpenSSL (outside of Windows or macOS) and LibSSH2 installed if you want libgit2 to support HTTPS and SSH respectively. Note that even if libgit2 is included in the resulting binary, its dependencies will not be.
+
+Run `go get -d github.com/libgit2/git2go` to download the code and go to your `$GOPATH/src/github.com/libgit2/git2go` directory. From there, we need to build the C code and put it into the resulting go binary.
+
+    git submodule update --init # get libgit2
+    make install
+
+will compile libgit2, link it into git2go and install it.
 
 Parallelism and network operations
 ----------------------------------
 
-libgit2 may use OpenSSL and LibSSH2 for performing encrypted network connections. For now, libgit2 asks libgit2 to set locking for OpenSSL. This makes HTTPS connections thread-safe, but it is fragile and will likely stop doing it soon. This may also make SSH connections thread-safe if your copy of libssh2 is linked against OpenSSL. Check libgit2's `THREADSAFE.md` for more information.
+libgit2 may use OpenSSL and LibSSH2 for performing encrypted network connections. For now, git2go asks libgit2 to set locking for OpenSSL. This makes HTTPS connections thread-safe, but it is fragile and will likely stop doing it soon. This may also make SSH connections thread-safe if your copy of libssh2 is linked against OpenSSL. Check libgit2's `THREADSAFE.md` for more information.
 
 Running the tests
 -----------------
 
-For the stable version, `go test` will work as usual. For the `main` branch, similarly to installing, running the tests requires building a local libgit2 library, so the Makefile provides a wrapper that makes sure it's built
+For the stable version, `go test` will work as usual. For the `next` branch, similarly to installing, running the tests requires building a local libgit2 library, so the Makefile provides a wrapper that makes sure it's built
 
-    make test-static
+    make test
 
 Alternatively, you can build the library manually first and then run the tests
 
-    make install-static
-    go test -v -tags static ./...
+    ./script/build-libgit2-static.sh
+    go test -v
 
 License
 -------
 
-M to the I to the T. See the LICENSE file if you've never seen an MIT license before.
+M to the I to the T. See the LICENSE file if you've never seen a MIT license before.
 
 Authors
 -------
 
-- Carlos Martín (github@carlosmn)
-- Vicent Martí (github@vmg)
+- Carlos Martín (@carlosmn)
+- Vicent Martí (@vmg)
 

blame.go

@@ -23,7 +23,7 @@ func DefaultBlameOptions() (BlameOptions, error) {
 	defer runtime.UnlockOSThread()
 
 	opts := C.git_blame_options{}
-	ecode := C.git_blame_options_init(&opts, C.GIT_BLAME_OPTIONS_VERSION)
+	ecode := C.git_blame_init_options(&opts, C.GIT_BLAME_OPTIONS_VERSION)
 	if ecode < 0 {
 		return BlameOptions{}, MakeGitError(ecode)
 	}
@@ -47,8 +47,6 @@ const (
 	BlameTrackCopiesSameCommitCopies BlameOptionsFlag = C.GIT_BLAME_TRACK_COPIES_SAME_COMMIT_COPIES
 	BlameTrackCopiesAnyCommitCopies  BlameOptionsFlag = C.GIT_BLAME_TRACK_COPIES_ANY_COMMIT_COPIES
 	BlameFirstParent                 BlameOptionsFlag = C.GIT_BLAME_FIRST_PARENT
-	BlameUseMailmap                  BlameOptionsFlag = C.GIT_BLAME_USE_MAILMAP
-	BlameIgnoreWhitespace            BlameOptionsFlag = C.GIT_BLAME_IGNORE_WHITESPACE
 )
 
 func (v *Repository) BlameFile(path string, opts *BlameOptions) (*Blame, error) {
@@ -78,7 +76,6 @@ func (v *Repository) BlameFile(path string, opts *BlameOptions) (*Blame, error)
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_blame_file(&blamePtr, v.ptr, cpath, copts)
-	runtime.KeepAlive(v)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -87,20 +84,15 @@ func (v *Repository) BlameFile(path string, opts *BlameOptions) (*Blame, error)
 }
 
 type Blame struct {
-	doNotCompare
 	ptr *C.git_blame
 }
 
 func (blame *Blame) HunkCount() int {
-	ret := int(C.git_blame_get_hunk_count(blame.ptr))
-	runtime.KeepAlive(blame)
-
-	return ret
+	return int(C.git_blame_get_hunk_count(blame.ptr))
 }
 
 func (blame *Blame) HunkByIndex(index int) (BlameHunk, error) {
 	ptr := C.git_blame_get_hunk_byindex(blame.ptr, C.uint32_t(index))
-	runtime.KeepAlive(blame)
 	if ptr == nil {
 		return BlameHunk{}, ErrInvalid
 	}
@@ -109,7 +101,6 @@ func (blame *Blame) HunkByIndex(index int) (BlameHunk, error) {
 
 func (blame *Blame) HunkByLine(lineno int) (BlameHunk, error) {
 	ptr := C.git_blame_get_hunk_byline(blame.ptr, C.size_t(lineno))
-	runtime.KeepAlive(blame)
 	if ptr == nil {
 		return BlameHunk{}, ErrInvalid
 	}

blob.go

@@ -9,41 +9,25 @@ void _go_git_writestream_free(git_writestream *stream);
 */
 import "C"
 import (
+	"io"
 	"reflect"
 	"runtime"
 	"unsafe"
 )
 
 type Blob struct {
-	doNotCompare
 	Object
 	cast_ptr *C.git_blob
 }
 
-func (b *Blob) AsObject() *Object {
-	return &b.Object
-}
-
 func (v *Blob) Size() int64 {
-	ret := int64(C.git_blob_rawsize(v.cast_ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return int64(C.git_blob_rawsize(v.cast_ptr))
 }
 
 func (v *Blob) Contents() []byte {
 	size := C.int(C.git_blob_rawsize(v.cast_ptr))
 	buffer := unsafe.Pointer(C.git_blob_rawcontent(v.cast_ptr))
-
-	goBytes := C.GoBytes(buffer, size)
-	runtime.KeepAlive(v)
-
-	return goBytes
-}
-
-func (v *Blob) IsBinary() bool {
-	ret := C.git_blob_is_binary(v.cast_ptr) == 1
-	runtime.KeepAlive(v)
-	return ret
+	return C.GoBytes(buffer, size)
 }
 
 func (repo *Repository) CreateBlobFromBuffer(data []byte) (*Oid, error) {
@@ -54,7 +38,7 @@ func (repo *Repository) CreateBlobFromBuffer(data []byte) (*Oid, error) {
 	var size C.size_t
 
 	// Go 1.6 added some increased checking of passing pointer to
-	// C, but its check depends on its expectations of what we
+	// C, but its check depends on its expectations of waht we
 	// pass to the C function, so unless we take the address of
 	// its contents at the call site itself, it can fail when
 	// 'data' is a slice of a slice.
@@ -68,14 +52,39 @@ func (repo *Repository) CreateBlobFromBuffer(data []byte) (*Oid, error) {
 		size = C.size_t(0)
 	}
 
-	ecode := C.git_blob_create_from_buffer(&id, repo.ptr, unsafe.Pointer(&data[0]), size)
-	runtime.KeepAlive(repo)
+	ecode := C.git_blob_create_frombuffer(&id, repo.ptr, unsafe.Pointer(&data[0]), size)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
 	return newOidFromC(&id), nil
 }
 
+type BlobChunkCallback func(maxLen int) ([]byte, error)
+
+type BlobCallbackData struct {
+	Callback BlobChunkCallback
+	Error    error
+}
+
+//export blobChunkCb
+func blobChunkCb(buffer *C.char, maxLen C.size_t, handle unsafe.Pointer) int {
+	payload := pointerHandles.Get(handle)
+	data, ok := payload.(*BlobCallbackData)
+	if !ok {
+		panic("could not retrieve blob callback data")
+	}
+
+	goBuf, err := data.Callback(int(maxLen))
+	if err == io.EOF {
+		return 0
+	} else if err != nil {
+		data.Error = err
+		return -1
+	}
+	C.memcpy(unsafe.Pointer(buffer), unsafe.Pointer(&goBuf[0]), C.size_t(len(goBuf)))
+	return len(goBuf)
+}
+
 func (repo *Repository) CreateFromStream(hintPath string) (*BlobWriteStream, error) {
 	var chintPath *C.char = nil
 	var stream *C.git_writestream
@@ -88,24 +97,21 @@ func (repo *Repository) CreateFromStream(hintPath string) (*BlobWriteStream, err
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_blob_create_from_stream(&stream, repo.ptr, chintPath)
+	ecode := C.git_blob_create_fromstream(&stream, repo.ptr, chintPath)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
 
-	return newBlobWriteStreamFromC(stream, repo), nil
+	return newBlobWriteStreamFromC(stream), nil
 }
 
 type BlobWriteStream struct {
-	doNotCompare
-	ptr  *C.git_writestream
-	repo *Repository
+	ptr *C.git_writestream
 }
 
-func newBlobWriteStreamFromC(ptr *C.git_writestream, repo *Repository) *BlobWriteStream {
+func newBlobWriteStreamFromC(ptr *C.git_writestream) *BlobWriteStream {
 	stream := &BlobWriteStream{
-		ptr:  ptr,
-		repo: repo,
+		ptr: ptr,
 	}
 
 	runtime.SetFinalizer(stream, (*BlobWriteStream).Free)
@@ -122,7 +128,6 @@ func (stream *BlobWriteStream) Write(p []byte) (int, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C._go_git_writestream_write(stream.ptr, ptr, size)
-	runtime.KeepAlive(stream)
 	if ecode < 0 {
 		return 0, MakeGitError(ecode)
 	}
@@ -141,8 +146,7 @@ func (stream *BlobWriteStream) Commit() (*Oid, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_blob_create_from_stream_commit(&oid, stream.ptr)
-	runtime.KeepAlive(stream)
+	ecode := C.git_blob_create_fromstream_commit(&oid, stream.ptr)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}

blob_test.go

@@ -28,21 +28,7 @@ func TestCreateBlobFromBuffer(t *testing.T) {
 		t.Fatal("Empty buffer did not deliver empty blob id")
 	}
 
-	tests := []struct {
-		data     []byte
-		isBinary bool
-	}{
-		{
-			data:     []byte("hello there"),
-			isBinary: false,
-		},
-		{
-			data:     doublePointerBytes(),
-			isBinary: true,
-		},
-	}
-	for _, tt := range tests {
-		data := tt.data
+	for _, data := range []([]byte){[]byte("hello there"), doublePointerBytes()} {
 		id, err = repo.CreateBlobFromBuffer(data)
 		checkFatal(t, err)
 
@@ -52,9 +38,5 @@ func TestCreateBlobFromBuffer(t *testing.T) {
 			t.Fatal("Loaded bytes don't match original bytes:",
 				blob.Contents(), "!=", data)
 		}
-		want := tt.isBinary
-		if got := blob.IsBinary(); got != want {
-			t.Fatalf("IsBinary() = %v, want %v", got, want)
-		}
 	}
 }

branch.go

@@ -19,7 +19,6 @@ const (
 )
 
 type Branch struct {
-	doNotCompare
 	*Reference
 }
 
@@ -28,7 +27,6 @@ func (r *Reference) Branch() *Branch {
 }
 
 type BranchIterator struct {
-	doNotCompare
 	ptr  *C.git_branch_iterator
 	repo *Repository
 }
@@ -75,7 +73,7 @@ func (i *BranchIterator) ForEach(f BranchIteratorFunc) error {
 		}
 	}
 
-	if err != nil && IsErrorCode(err, ErrorCodeIterOver) {
+	if err != nil && IsErrorCode(err, ErrIterOver) {
 		return nil
 	}
 
@@ -90,7 +88,6 @@ func (repo *Repository) NewBranchIterator(flags BranchType) (*BranchIterator, er
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_branch_iterator_new(&ptr, repo.ptr, refType)
-	runtime.KeepAlive(repo)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -109,8 +106,6 @@ func (repo *Repository) CreateBranch(branchName string, target *Commit, force bo
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_create(&ptr, repo.ptr, cBranchName, target.cast_ptr, cForce)
-	runtime.KeepAlive(repo)
-	runtime.KeepAlive(target)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -122,7 +117,6 @@ func (b *Branch) Delete() error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 	ret := C.git_branch_delete(b.Reference.ptr)
-	runtime.KeepAlive(b.Reference)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -139,7 +133,6 @@ func (b *Branch) Move(newBranchName string, force bool) (*Branch, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_move(&ptr, b.Reference.ptr, cNewBranchName, cForce)
-	runtime.KeepAlive(b.Reference)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -152,7 +145,6 @@ func (b *Branch) IsHead() (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_is_head(b.Reference.ptr)
-	runtime.KeepAlive(b.Reference)
 	switch ret {
 	case 1:
 		return true, nil
@@ -173,7 +165,6 @@ func (repo *Repository) LookupBranch(branchName string, bt BranchType) (*Branch,
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_lookup(&ptr, repo.ptr, cName, C.git_branch_t(bt))
-	runtime.KeepAlive(repo)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -188,7 +179,6 @@ func (b *Branch) Name() (string, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_name(&cName, b.Reference.ptr)
-	runtime.KeepAlive(b.Reference)
 	if ret < 0 {
 		return "", MakeGitError(ret)
 	}
@@ -206,11 +196,10 @@ func (repo *Repository) RemoteName(canonicalBranchName string) (string, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_remote_name(&nameBuf, repo.ptr, cName)
-	runtime.KeepAlive(repo)
 	if ret < 0 {
 		return "", MakeGitError(ret)
 	}
-	defer C.git_buf_dispose(&nameBuf)
+	defer C.git_buf_free(&nameBuf)
 
 	return C.GoString(nameBuf.ptr), nil
 }
@@ -223,7 +212,6 @@ func (b *Branch) SetUpstream(upstreamName string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_set_upstream(b.Reference.ptr, cName)
-	runtime.KeepAlive(b.Reference)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -237,7 +225,6 @@ func (b *Branch) Upstream() (*Reference, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_upstream(&ptr, b.Reference.ptr)
-	runtime.KeepAlive(b.Reference)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -254,11 +241,10 @@ func (repo *Repository) UpstreamName(canonicalBranchName string) (string, error)
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_branch_upstream_name(&nameBuf, repo.ptr, cName)
-	runtime.KeepAlive(repo)
 	if ret < 0 {
 		return "", MakeGitError(ret)
 	}
-	defer C.git_buf_dispose(&nameBuf)
+	defer C.git_buf_free(&nameBuf)
 
 	return C.GoString(nameBuf.ptr), nil
 }

branch_test.go

@@ -22,7 +22,7 @@ func TestBranchIterator(t *testing.T) {
 		t.Fatalf("expected BranchLocal, not %v", t)
 	}
 	b, bt, err = i.Next()
-	if !IsErrorCode(err, ErrorCodeIterOver) {
+	if !IsErrorCode(err, ErrIterOver) {
 		t.Fatal("expected iterover")
 	}
 }
@@ -49,7 +49,7 @@ func TestBranchIteratorEach(t *testing.T) {
 	}
 
 	err = i.ForEach(f)
-	if err != nil && !IsErrorCode(err, ErrorCodeIterOver) {
+	if err != nil && !IsErrorCode(err, ErrIterOver) {
 		t.Fatal(err)
 	}
 

checkout.go

@@ -3,7 +3,7 @@ package git
 /*
 #include <git2.h>
 
-extern void _go_git_populate_checkout_callbacks(git_checkout_options *opts);
+extern void _go_git_populate_checkout_cb(git_checkout_options *opts);
 */
 import "C"
 import (
@@ -35,7 +35,7 @@ const (
 	CheckoutDontUpdateIndex           CheckoutStrategy = C.GIT_CHECKOUT_DONT_UPDATE_INDEX            // Normally checkout updates index entries as it goes; this stops that
 	CheckoutNoRefresh                 CheckoutStrategy = C.GIT_CHECKOUT_NO_REFRESH                   // Don't refresh index/config/etc before doing checkout
 	CheckoutSkipUnmerged              CheckoutStrategy = C.GIT_CHECKOUT_SKIP_UNMERGED                // Allow checkout to skip unmerged files
-	CheckoutUseOurs                   CheckoutStrategy = C.GIT_CHECKOUT_USE_OURS                     // For unmerged files, checkout stage 2 from index
+	CheckoutUserOurs                  CheckoutStrategy = C.GIT_CHECKOUT_USE_OURS                     // For unmerged files, checkout stage 2 from index
 	CheckoutUseTheirs                 CheckoutStrategy = C.GIT_CHECKOUT_USE_THEIRS                   // For unmerged files, checkout stage 3 from index
 	CheckoutDisablePathspecMatch      CheckoutStrategy = C.GIT_CHECKOUT_DISABLE_PATHSPEC_MATCH       // Treat pathspec as simple list of exact match file paths
 	CheckoutSkipLockedDirectories     CheckoutStrategy = C.GIT_CHECKOUT_SKIP_LOCKED_DIRECTORIES      // Ignore directories in use, they will be left empty
@@ -48,10 +48,10 @@ const (
 	CheckoutUpdateSubmodulesIfChanged CheckoutStrategy = C.GIT_CHECKOUT_UPDATE_SUBMODULES_IF_CHANGED // Recursively checkout submodules if HEAD moved in super repo (NOT IMPLEMENTED)
 )
 
-type CheckoutNotifyCallback func(why CheckoutNotifyType, path string, baseline, target, workdir DiffFile) error
-type CheckoutProgressCallback func(path string, completed, total uint)
+type CheckoutNotifyCallback func(why CheckoutNotifyType, path string, baseline, target, workdir DiffFile) ErrorCode
+type CheckoutProgressCallback func(path string, completed, total uint) ErrorCode
 
-type CheckoutOptions struct {
+type CheckoutOpts struct {
 	Strategy         CheckoutStrategy   // Default will be a dry run
 	DisableFilters   bool               // Don't apply filters like CRLF conversion
 	DirMode          os.FileMode        // Default is 0755
@@ -65,20 +65,19 @@ type CheckoutOptions struct {
 	Baseline         *Tree
 }
 
-func checkoutOptionsFromC(c *C.git_checkout_options) CheckoutOptions {
-	opts := CheckoutOptions{
-		Strategy:       CheckoutStrategy(c.checkout_strategy),
-		DisableFilters: c.disable_filters != 0,
-		DirMode:        os.FileMode(c.dir_mode),
-		FileMode:       os.FileMode(c.file_mode),
-		FileOpenFlags:  int(c.file_open_flags),
-		NotifyFlags:    CheckoutNotifyType(c.notify_flags),
-	}
+func checkoutOptionsFromC(c *C.git_checkout_options) CheckoutOpts {
+	opts := CheckoutOpts{}
+	opts.Strategy = CheckoutStrategy(c.checkout_strategy)
+	opts.DisableFilters = c.disable_filters != 0
+	opts.DirMode = os.FileMode(c.dir_mode)
+	opts.FileMode = os.FileMode(c.file_mode)
+	opts.FileOpenFlags = int(c.file_open_flags)
+	opts.NotifyFlags = CheckoutNotifyType(c.notify_flags)
 	if c.notify_payload != nil {
-		opts.NotifyCallback = pointerHandles.Get(c.notify_payload).(*checkoutCallbackData).options.NotifyCallback
+		opts.NotifyCallback = pointerHandles.Get(c.notify_payload).(*CheckoutOpts).NotifyCallback
 	}
 	if c.progress_payload != nil {
-		opts.ProgressCallback = pointerHandles.Get(c.progress_payload).(*checkoutCallbackData).options.ProgressCallback
+		opts.ProgressCallback = pointerHandles.Get(c.progress_payload).(*CheckoutOpts).ProgressCallback
 	}
 	if c.target_directory != nil {
 		opts.TargetDirectory = C.GoString(c.target_directory)
@@ -86,19 +85,19 @@ func checkoutOptionsFromC(c *C.git_checkout_options) CheckoutOptions {
 	return opts
 }
 
-type checkoutCallbackData struct {
-	options     *CheckoutOptions
-	errorTarget *error
+func (opts *CheckoutOpts) toC() *C.git_checkout_options {
+	if opts == nil {
+		return nil
+	}
+	c := C.git_checkout_options{}
+	populateCheckoutOpts(&c, opts)
+	return &c
 }
 
 //export checkoutNotifyCallback
-func checkoutNotifyCallback(
-	why C.git_checkout_notify_t,
-	cpath *C.char,
-	cbaseline, ctarget, cworkdir, handle unsafe.Pointer,
-) C.int {
-	if handle == nil {
-		return C.int(ErrorCodeOK)
+func checkoutNotifyCallback(why C.git_checkout_notify_t, cpath *C.char, cbaseline, ctarget, cworkdir, data unsafe.Pointer) int {
+	if data == nil {
+		return 0
 	}
 	path := C.GoString(cpath)
 	var baseline, target, workdir DiffFile
@@ -111,105 +110,84 @@ func checkoutNotifyCallback(
 	if cworkdir != nil {
 		workdir = diffFileFromC((*C.git_diff_file)(cworkdir))
 	}
-	data := pointerHandles.Get(handle).(*checkoutCallbackData)
-	if data.options.NotifyCallback == nil {
-		return C.int(ErrorCodeOK)
+	opts := pointerHandles.Get(data).(*CheckoutOpts)
+	if opts.NotifyCallback == nil {
+		return 0
 	}
-	err := data.options.NotifyCallback(CheckoutNotifyType(why), path, baseline, target, workdir)
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-	return C.int(ErrorCodeOK)
+	return int(opts.NotifyCallback(CheckoutNotifyType(why), path, baseline, target, workdir))
 }
 
 //export checkoutProgressCallback
-func checkoutProgressCallback(
-	path *C.char,
-	completed_steps, total_steps C.size_t,
-	handle unsafe.Pointer,
-) {
-	data := pointerHandles.Get(handle).(*checkoutCallbackData)
-	if data.options.ProgressCallback == nil {
-		return
+func checkoutProgressCallback(path *C.char, completed_steps, total_steps C.size_t, data unsafe.Pointer) int {
+	opts := pointerHandles.Get(data).(*CheckoutOpts)
+	if opts.ProgressCallback == nil {
+		return 0
 	}
-	data.options.ProgressCallback(C.GoString(path), uint(completed_steps), uint(total_steps))
+	return int(opts.ProgressCallback(C.GoString(path), uint(completed_steps), uint(total_steps)))
 }
 
-// populateCheckoutOptions populates the provided C-struct with the contents of
-// the provided CheckoutOptions struct.  Returns copts, or nil if opts is nil,
-// in order to help with what to pass.
-func populateCheckoutOptions(copts *C.git_checkout_options, opts *CheckoutOptions, errorTarget *error) *C.git_checkout_options {
-	C.git_checkout_options_init(copts, C.GIT_CHECKOUT_OPTIONS_VERSION)
+// Convert the CheckoutOpts struct to the corresponding
+// C-struct. Returns a pointer to ptr, or nil if opts is nil, in order
+// to help with what to pass.
+func populateCheckoutOpts(ptr *C.git_checkout_options, opts *CheckoutOpts) *C.git_checkout_options {
 	if opts == nil {
 		return nil
 	}
 
-	copts.checkout_strategy = C.uint(opts.Strategy)
-	copts.disable_filters = cbool(opts.DisableFilters)
-	copts.dir_mode = C.uint(opts.DirMode.Perm())
-	copts.file_mode = C.uint(opts.FileMode.Perm())
-	copts.notify_flags = C.uint(opts.NotifyFlags)
+	C.git_checkout_init_options(ptr, 1)
+	ptr.checkout_strategy = C.uint(opts.Strategy)
+	ptr.disable_filters = cbool(opts.DisableFilters)
+	ptr.dir_mode = C.uint(opts.DirMode.Perm())
+	ptr.file_mode = C.uint(opts.FileMode.Perm())
+	ptr.notify_flags = C.uint(opts.NotifyFlags)
 	if opts.NotifyCallback != nil || opts.ProgressCallback != nil {
-		C._go_git_populate_checkout_callbacks(copts)
-		data := &checkoutCallbackData{
-			options:     opts,
-			errorTarget: errorTarget,
-		}
-		payload := pointerHandles.Track(data)
-		if opts.NotifyCallback != nil {
-			copts.notify_payload = payload
-		}
-		if opts.ProgressCallback != nil {
-			copts.progress_payload = payload
-		}
+		C._go_git_populate_checkout_cb(ptr)
+	}
+	payload := pointerHandles.Track(opts)
+	if opts.NotifyCallback != nil {
+		ptr.notify_payload = payload
+	}
+	if opts.ProgressCallback != nil {
+		ptr.progress_payload = payload
 	}
 	if opts.TargetDirectory != "" {
-		copts.target_directory = C.CString(opts.TargetDirectory)
+		ptr.target_directory = C.CString(opts.TargetDirectory)
 	}
 	if len(opts.Paths) > 0 {
-		copts.paths.strings = makeCStringsFromStrings(opts.Paths)
-		copts.paths.count = C.size_t(len(opts.Paths))
+		ptr.paths.strings = makeCStringsFromStrings(opts.Paths)
+		ptr.paths.count = C.size_t(len(opts.Paths))
 	}
 
 	if opts.Baseline != nil {
-		copts.baseline = opts.Baseline.cast_ptr
+		ptr.baseline = opts.Baseline.cast_ptr
 	}
 
-	return copts
+	return ptr
 }
 
-func freeCheckoutOptions(copts *C.git_checkout_options) {
-	if copts == nil {
+func freeCheckoutOpts(ptr *C.git_checkout_options) {
+	if ptr == nil {
 		return
 	}
-	C.free(unsafe.Pointer(copts.target_directory))
-	if copts.paths.count > 0 {
-		freeStrarray(&copts.paths)
+	C.free(unsafe.Pointer(ptr.target_directory))
+	if ptr.paths.count > 0 {
+		freeStrarray(&ptr.paths)
 	}
-	if copts.notify_payload != nil {
-		pointerHandles.Untrack(copts.notify_payload)
-	} else if copts.progress_payload != nil {
-		pointerHandles.Untrack(copts.progress_payload)
+	if ptr.notify_payload != nil {
+		pointerHandles.Untrack(ptr.notify_payload)
 	}
 }
 
 // Updates files in the index and the working tree to match the content of
 // the commit pointed at by HEAD. opts may be nil.
-func (v *Repository) CheckoutHead(opts *CheckoutOptions) error {
+func (v *Repository) CheckoutHead(opts *CheckoutOpts) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	cOpts := populateCheckoutOptions(&C.git_checkout_options{}, opts, &err)
-	defer freeCheckoutOptions(cOpts)
+	cOpts := opts.toC()
+	defer freeCheckoutOpts(cOpts)
 
 	ret := C.git_checkout_head(v.ptr, cOpts)
-	runtime.KeepAlive(v)
-
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -220,7 +198,7 @@ func (v *Repository) CheckoutHead(opts *CheckoutOptions) error {
 // Updates files in the working tree to match the content of the given
 // index. If index is nil, the repository's index will be used. opts
 // may be nil.
-func (v *Repository) CheckoutIndex(index *Index, opts *CheckoutOptions) error {
+func (v *Repository) CheckoutIndex(index *Index, opts *CheckoutOpts) error {
 	var iptr *C.git_index = nil
 	if index != nil {
 		iptr = index.ptr
@@ -229,15 +207,10 @@ func (v *Repository) CheckoutIndex(index *Index, opts *CheckoutOptions) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	cOpts := populateCheckoutOptions(&C.git_checkout_options{}, opts, &err)
-	defer freeCheckoutOptions(cOpts)
+	cOpts := opts.toC()
+	defer freeCheckoutOpts(cOpts)
 
 	ret := C.git_checkout_index(v.ptr, iptr, cOpts)
-	runtime.KeepAlive(v)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -245,20 +218,14 @@ func (v *Repository) CheckoutIndex(index *Index, opts *CheckoutOptions) error {
 	return nil
 }
 
-func (v *Repository) CheckoutTree(tree *Tree, opts *CheckoutOptions) error {
+func (v *Repository) CheckoutTree(tree *Tree, opts *CheckoutOpts) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	cOpts := populateCheckoutOptions(&C.git_checkout_options{}, opts, &err)
-	defer freeCheckoutOptions(cOpts)
+	cOpts := opts.toC()
+	defer freeCheckoutOpts(cOpts)
 
 	ret := C.git_checkout_tree(v.ptr, tree.ptr, cOpts)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(tree)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}

cherrypick.go

@@ -9,37 +9,39 @@ import (
 )
 
 type CherrypickOptions struct {
-	Mainline        uint
-	MergeOptions    MergeOptions
-	CheckoutOptions CheckoutOptions
+	Version      uint
+	Mainline     uint
+	MergeOpts    MergeOptions
+	CheckoutOpts CheckoutOpts
 }
 
 func cherrypickOptionsFromC(c *C.git_cherrypick_options) CherrypickOptions {
 	opts := CherrypickOptions{
-		Mainline:        uint(c.mainline),
-		MergeOptions:    mergeOptionsFromC(&c.merge_opts),
-		CheckoutOptions: checkoutOptionsFromC(&c.checkout_opts),
+		Version:      uint(c.version),
+		Mainline:     uint(c.mainline),
+		MergeOpts:    mergeOptionsFromC(&c.merge_opts),
+		CheckoutOpts: checkoutOptionsFromC(&c.checkout_opts),
 	}
 	return opts
 }
 
-func populateCherrypickOptions(copts *C.git_cherrypick_options, opts *CherrypickOptions, errorTarget *error) *C.git_cherrypick_options {
-	C.git_cherrypick_options_init(copts, C.GIT_CHERRYPICK_OPTIONS_VERSION)
+func (opts *CherrypickOptions) toC() *C.git_cherrypick_options {
 	if opts == nil {
 		return nil
 	}
-	copts.mainline = C.uint(opts.Mainline)
-	populateMergeOptions(&copts.merge_opts, &opts.MergeOptions)
-	populateCheckoutOptions(&copts.checkout_opts, &opts.CheckoutOptions, errorTarget)
-	return copts
+	c := C.git_cherrypick_options{}
+	c.version = C.uint(opts.Version)
+	c.mainline = C.uint(opts.Mainline)
+	c.merge_opts = *opts.MergeOpts.toC()
+	c.checkout_opts = *opts.CheckoutOpts.toC()
+	return &c
 }
 
-func freeCherrypickOpts(copts *C.git_cherrypick_options) {
-	if copts == nil {
+func freeCherrypickOpts(ptr *C.git_cherrypick_options) {
+	if ptr == nil {
 		return
 	}
-	freeMergeOptions(&copts.merge_opts)
-	freeCheckoutOptions(&copts.checkout_opts)
+	freeCheckoutOpts(&ptr.checkout_opts)
 }
 
 func DefaultCherrypickOptions() (CherrypickOptions, error) {
@@ -48,7 +50,7 @@ func DefaultCherrypickOptions() (CherrypickOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_cherrypick_options_init(&c, C.GIT_CHERRYPICK_OPTIONS_VERSION)
+	ecode := C.git_cherrypick_init_options(&c, C.GIT_CHERRYPICK_OPTIONS_VERSION)
 	if ecode < 0 {
 		return CherrypickOptions{}, MakeGitError(ecode)
 	}
@@ -60,35 +62,12 @@ func (v *Repository) Cherrypick(commit *Commit, opts CherrypickOptions) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	cOpts := populateCherrypickOptions(&C.git_cherrypick_options{}, &opts, &err)
+	cOpts := opts.toC()
 	defer freeCherrypickOpts(cOpts)
 
-	ret := C.git_cherrypick(v.ptr, commit.cast_ptr, cOpts)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(commit)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
-		return MakeGitError(ret)
+	ecode := C.git_cherrypick(v.ptr, commit.cast_ptr, cOpts)
+	if ecode < 0 {
+		return MakeGitError(ecode)
 	}
 	return nil
 }
-
-func (r *Repository) CherrypickCommit(pick, our *Commit, opts CherrypickOptions) (*Index, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cOpts := populateMergeOptions(&C.git_merge_options{}, &opts.MergeOptions)
-	defer freeMergeOptions(cOpts)
-
-	var ptr *C.git_index
-	ret := C.git_cherrypick_commit(&ptr, r.ptr, pick.cast_ptr, our.cast_ptr, C.uint(opts.Mainline), cOpts)
-	runtime.KeepAlive(pick)
-	runtime.KeepAlive(our)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	return newIndexFromC(ptr, r), nil
-}

cherrypick_test.go

@@ -11,7 +11,7 @@ func checkout(t *testing.T, repo *Repository, commit *Commit) {
 		t.Fatal(err)
 	}
 
-	err = repo.CheckoutTree(tree, &CheckoutOptions{Strategy: CheckoutSafe})
+	err = repo.CheckoutTree(tree, &CheckoutOpts{Strategy: CheckoutSafe})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -84,57 +84,3 @@ func TestCherrypick(t *testing.T) {
 		t.Fatal("Incorrect repository state: ", state)
 	}
 }
-
-func TestCherrypickCommit(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	c1, _ := seedTestRepo(t, repo)
-	c2, _ := updateReadme(t, repo, content)
-
-	commit1, err := repo.LookupCommit(c1)
-	if err != nil {
-		t.Fatal(err)
-	}
-	commit2, err := repo.LookupCommit(c2)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	checkout(t, repo, commit1)
-
-	if got := readReadme(t, repo); got == content {
-		t.Fatalf("README = %q, want %q", got, content)
-	}
-
-	opts, err := DefaultCherrypickOptions()
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	idx, err := repo.CherrypickCommit(commit2, commit1, opts)
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer idx.Free()
-
-	// The file is only updated in the index, not in the working directory.
-	if got := readReadme(t, repo); got == content {
-		t.Errorf("README = %q, want %q", got, content)
-	}
-	if got := repo.State(); got != RepositoryStateNone {
-		t.Errorf("repo.State() = %v, want %v", got, RepositoryStateCherrypick)
-	}
-
-	if got := idx.EntryCount(); got != 1 {
-		t.Fatalf("idx.EntryCount() = %v, want %v", got, 1)
-	}
-	entry, err := idx.EntryByIndex(0)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if entry.Path != "README" {
-		t.Errorf("entry.Path = %v, want %v", entry.Path, "README")
-	}
-}

clone.go

@@ -3,7 +3,7 @@ package git
 /*
 #include <git2.h>
 
-extern void _go_git_populate_clone_callbacks(git_clone_options *opts);
+extern void _go_git_populate_remote_cb(git_clone_options *opts);
 */
 import "C"
 import (
@@ -11,11 +11,11 @@ import (
 	"unsafe"
 )
 
-type RemoteCreateCallback func(repo *Repository, name, url string) (*Remote, error)
+type RemoteCreateCallback func(repo *Repository, name, url string) (*Remote, ErrorCode)
 
 type CloneOptions struct {
-	CheckoutOptions      CheckoutOptions
-	FetchOptions         FetchOptions
+	*CheckoutOpts
+	*FetchOptions
 	Bare                 bool
 	CheckoutBranch       string
 	RemoteCreateCallback RemoteCreateCallback
@@ -28,23 +28,20 @@ func Clone(url string, path string, options *CloneOptions) (*Repository, error)
 	cpath := C.CString(path)
 	defer C.free(unsafe.Pointer(cpath))
 
-	var err error
-	cOptions := populateCloneOptions(&C.git_clone_options{}, options, &err)
-	defer freeCloneOptions(cOptions)
+	copts := (*C.git_clone_options)(C.calloc(1, C.size_t(unsafe.Sizeof(C.git_clone_options{}))))
+	populateCloneOptions(copts, options)
+	defer freeCloneOptions(copts)
 
 	if len(options.CheckoutBranch) != 0 {
-		cOptions.checkout_branch = C.CString(options.CheckoutBranch)
+		copts.checkout_branch = C.CString(options.CheckoutBranch)
 	}
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	var ptr *C.git_repository
-	ret := C.git_clone(&ptr, curl, cpath, cOptions)
+	ret := C.git_clone(&ptr, curl, cpath, copts)
 
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -53,81 +50,60 @@ func Clone(url string, path string, options *CloneOptions) (*Repository, error)
 }
 
 //export remoteCreateCallback
-func remoteCreateCallback(
-	out **C.git_remote,
-	crepo *C.git_repository,
-	cname, curl *C.char,
-	handle unsafe.Pointer,
-) C.int {
+func remoteCreateCallback(cremote unsafe.Pointer, crepo unsafe.Pointer, cname, curl *C.char, payload unsafe.Pointer) C.int {
 	name := C.GoString(cname)
 	url := C.GoString(curl)
-	repo := newRepositoryFromC(crepo)
-	repo.weak = true
-	defer repo.Free()
+	repo := newRepositoryFromC((*C.git_repository)(crepo))
+	// We don't own this repository, so make sure we don't try to free it
+	runtime.SetFinalizer(repo, nil)
 
-	data, ok := pointerHandles.Get(handle).(*cloneCallbackData)
-	if !ok {
+	if opts, ok := pointerHandles.Get(payload).(CloneOptions); ok {
+		remote, err := opts.RemoteCreateCallback(repo, name, url)
+		// clear finalizer as the calling C function will
+		// free the remote itself
+		runtime.SetFinalizer(remote, nil)
+
+		if err == ErrOk && remote != nil {
+			cptr := (**C.git_remote)(cremote)
+			*cptr = remote.ptr
+		} else if err == ErrOk && remote == nil {
+			panic("no remote created by callback")
+		}
+
+		return C.int(err)
+	} else {
 		panic("invalid remote create callback")
 	}
-
-	remote, err := data.options.RemoteCreateCallback(repo, name, url)
-
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-	if remote == nil {
-		panic("no remote created by callback")
-	}
-
-	*out = remote.ptr
-
-	// clear finalizer as the calling C function will
-	// free the remote itself
-	runtime.SetFinalizer(remote, nil)
-	remote.repo.Remotes.untrackRemote(remote)
-
-	return C.int(ErrorCodeOK)
 }
 
-type cloneCallbackData struct {
-	options     *CloneOptions
-	errorTarget *error
-}
+func populateCloneOptions(ptr *C.git_clone_options, opts *CloneOptions) {
+	C.git_clone_init_options(ptr, C.GIT_CLONE_OPTIONS_VERSION)
 
-func populateCloneOptions(copts *C.git_clone_options, opts *CloneOptions, errorTarget *error) *C.git_clone_options {
-	C.git_clone_options_init(copts, C.GIT_CLONE_OPTIONS_VERSION)
 	if opts == nil {
-		return nil
+		return
 	}
-	populateCheckoutOptions(&copts.checkout_opts, &opts.CheckoutOptions, errorTarget)
-	populateFetchOptions(&copts.fetch_opts, &opts.FetchOptions, errorTarget)
-	copts.bare = cbool(opts.Bare)
+	populateCheckoutOpts(&ptr.checkout_opts, opts.CheckoutOpts)
+	populateFetchOptions(&ptr.fetch_opts, opts.FetchOptions)
+	ptr.bare = cbool(opts.Bare)
 
 	if opts.RemoteCreateCallback != nil {
-		data := &cloneCallbackData{
-			options:     opts,
-			errorTarget: errorTarget,
-		}
 		// Go v1.1 does not allow to assign a C function pointer
-		C._go_git_populate_clone_callbacks(copts)
-		copts.remote_cb_payload = pointerHandles.Track(data)
+		C._go_git_populate_remote_cb(ptr)
+		ptr.remote_cb_payload = pointerHandles.Track(*opts)
 	}
-
-	return copts
 }
 
-func freeCloneOptions(copts *C.git_clone_options) {
-	if copts == nil {
+func freeCloneOptions(ptr *C.git_clone_options) {
+	if ptr == nil {
 		return
 	}
 
-	freeCheckoutOptions(&copts.checkout_opts)
-	freeFetchOptions(&copts.fetch_opts)
+	freeCheckoutOpts(&ptr.checkout_opts)
 
-	if copts.remote_cb_payload != nil {
-		pointerHandles.Untrack(copts.remote_cb_payload)
+	if ptr.remote_cb_payload != nil {
+		pointerHandles.Untrack(ptr.remote_cb_payload)
 	}
 
-	C.free(unsafe.Pointer(copts.checkout_branch))
+	C.free(unsafe.Pointer(ptr.checkout_branch))
+	C.free(unsafe.Pointer(ptr))
 }

clone_test.go

@@ -2,7 +2,6 @@ package git
 
 import (
 	"io/ioutil"
-	"os"
 	"testing"
 )
 
@@ -50,9 +49,15 @@ func TestCloneWithCallback(t *testing.T) {
 
 	opts := CloneOptions{
 		Bare: true,
-		RemoteCreateCallback: func(r *Repository, name, url string) (*Remote, error) {
+		RemoteCreateCallback: func(r *Repository, name, url string) (*Remote, ErrorCode) {
 			testPayload += 1
-			return r.Remotes.Create(REMOTENAME, url)
+
+			remote, err := r.Remotes.Create(REMOTENAME, url)
+			if err != nil {
+				return nil, ErrGeneric
+			}
+
+			return remote, ErrOk
 		},
 	}
 
@@ -69,19 +74,4 @@ func TestCloneWithCallback(t *testing.T) {
 	if err != nil || remote == nil {
 		t.Fatal("Remote was not created properly")
 	}
-	defer remote.Free()
-}
-
-// TestCloneWithExternalHTTPUrl
-func TestCloneWithExternalHTTPUrl(t *testing.T) {
-
-	path, err := ioutil.TempDir("", "git2go")
-	defer os.RemoveAll(path)
-
-	// clone the repo
-	url := "https://github.com/libgit2/TestGitRepository"
-	_, err = Clone(url, path, &CloneOptions{})
-	if err != nil {
-		t.Fatal("cannot clone remote repo via https, error: ", err)
-	}
 }

commit.go

@@ -12,131 +12,31 @@ import (
 	"unsafe"
 )
 
-// MessageEncoding is the encoding of commit messages.
-type MessageEncoding string
-
-const (
-	// MessageEncodingUTF8 is the default message encoding.
-	MessageEncodingUTF8 MessageEncoding = "UTF-8"
-)
-
 // Commit
 type Commit struct {
-	doNotCompare
 	Object
 	cast_ptr *C.git_commit
 }
 
-func (c *Commit) AsObject() *Object {
-	return &c.Object
+func (c Commit) Message() string {
+	return C.GoString(C.git_commit_message(c.cast_ptr))
 }
 
-func (c *Commit) Message() string {
-	ret := C.GoString(C.git_commit_message(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
+func (c Commit) RawMessage() string {
+	return C.GoString(C.git_commit_message_raw(c.cast_ptr))
 }
 
-func (c *Commit) MessageEncoding() MessageEncoding {
-	ptr := C.git_commit_message_encoding(c.cast_ptr)
-	if ptr == nil {
-		return MessageEncodingUTF8
-	}
-	ret := C.GoString(ptr)
-	runtime.KeepAlive(c)
-	return MessageEncoding(ret)
+func (c Commit) Summary() string {
+	return C.GoString(C.git_commit_summary(c.cast_ptr))
 }
 
-func (c *Commit) RawMessage() string {
-	ret := C.GoString(C.git_commit_message_raw(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
-}
-
-// RawHeader gets the full raw text of the commit header.
-func (c *Commit) RawHeader() string {
-	ret := C.GoString(C.git_commit_raw_header(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
-}
-
-// ContentToSign returns the content that will be passed to a signing function for this commit
-func (c *Commit) ContentToSign() string {
-	return c.RawHeader() + "\n" + c.RawMessage()
-}
-
-// CommitSigningCallback defines a function type that takes some data to sign and returns (signature, signature_field, error)
-type CommitSigningCallback func(string) (signature, signatureField string, err error)
-
-// CommitCreateCallback defines a function type that is called when another
-// function is going to create commits (for example, Rebase) to allow callers
-// to override the commit creation behavior. For example, users may wish to
-// sign commits by providing this information to Repository.CreateCommitBuffer,
-// signing that buffer, then calling Repository.CreateCommitWithSignature.
-type CommitCreateCallback func(
-	author, committer *Signature,
-	messageEncoding MessageEncoding,
-	message string,
-	tree *Tree,
-	parents ...*Commit,
-) (oid *Oid, err error)
-
-// WithSignatureUsing creates a new signed commit from this one using the given signing callback
-func (c *Commit) WithSignatureUsing(f CommitSigningCallback) (*Oid, error) {
-	signature, signatureField, err := f(c.ContentToSign())
-	if err != nil {
-		return nil, err
-	}
-
-	return c.WithSignature(signature, signatureField)
-}
-
-// WithSignature creates a new signed commit from the given signature and signature field
-func (c *Commit) WithSignature(signature string, signatureField string) (*Oid, error) {
-	return c.Owner().CreateCommitWithSignature(
-		c.ContentToSign(),
-		signature,
-		signatureField,
-	)
-}
-
-func (c *Commit) ExtractSignature() (string, string, error) {
-
-	var c_signed C.git_buf
-	defer C.git_buf_dispose(&c_signed)
-
-	var c_signature C.git_buf
-	defer C.git_buf_dispose(&c_signature)
-
-	oid := c.Id()
-	repo := C.git_commit_owner(c.cast_ptr)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-	ret := C.git_commit_extract_signature(&c_signature, &c_signed, repo, oid.toC(), nil)
-	runtime.KeepAlive(oid)
-	if ret < 0 {
-		return "", "", MakeGitError(ret)
-	} else {
-		return C.GoString(c_signature.ptr), C.GoString(c_signed.ptr), nil
-	}
-
-}
-
-func (c *Commit) Summary() string {
-	ret := C.GoString(C.git_commit_summary(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
-}
-
-func (c *Commit) Tree() (*Tree, error) {
+func (c Commit) Tree() (*Tree, error) {
 	var ptr *C.git_tree
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	err := C.git_commit_tree(&ptr, c.cast_ptr)
-	runtime.KeepAlive(c)
 	if err < 0 {
 		return nil, MakeGitError(err)
 	}
@@ -144,24 +44,18 @@ func (c *Commit) Tree() (*Tree, error) {
 	return allocTree(ptr, c.repo), nil
 }
 
-func (c *Commit) TreeId() *Oid {
-	ret := newOidFromC(C.git_commit_tree_id(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
+func (c Commit) TreeId() *Oid {
+	return newOidFromC(C.git_commit_tree_id(c.cast_ptr))
 }
 
-func (c *Commit) Author() *Signature {
+func (c Commit) Author() *Signature {
 	cast_ptr := C.git_commit_author(c.cast_ptr)
-	ret := newSignatureFromC(cast_ptr)
-	runtime.KeepAlive(c)
-	return ret
+	return newSignatureFromC(cast_ptr)
 }
 
-func (c *Commit) Committer() *Signature {
+func (c Commit) Committer() *Signature {
 	cast_ptr := C.git_commit_committer(c.cast_ptr)
-	ret := newSignatureFromC(cast_ptr)
-	runtime.KeepAlive(c)
-	return ret
+	return newSignatureFromC(cast_ptr)
 }
 
 func (c *Commit) Parent(n uint) *Commit {
@@ -171,21 +65,15 @@ func (c *Commit) Parent(n uint) *Commit {
 		return nil
 	}
 
-	parent := allocCommit(cobj, c.repo)
-	runtime.KeepAlive(c)
-	return parent
+	return allocCommit(cobj, c.repo)
 }
 
 func (c *Commit) ParentId(n uint) *Oid {
-	ret := newOidFromC(C.git_commit_parent_id(c.cast_ptr, C.uint(n)))
-	runtime.KeepAlive(c)
-	return ret
+	return newOidFromC(C.git_commit_parent_id(c.cast_ptr, C.uint(n)))
 }
 
 func (c *Commit) ParentCount() uint {
-	ret := uint(C.git_commit_parentcount(c.cast_ptr))
-	runtime.KeepAlive(c)
-	return ret
+	return uint(C.git_commit_parentcount(c.cast_ptr))
 }
 
 func (c *Commit) Amend(refname string, author, committer *Signature, message string, tree *Tree) (*Oid, error) {
@@ -218,9 +106,6 @@ func (c *Commit) Amend(refname string, author, committer *Signature, message str
 	oid := new(Oid)
 
 	cerr := C.git_commit_amend(oid.toC(), c.cast_ptr, cref, authorSig, committerSig, nil, cmsg, tree.cast_ptr)
-	runtime.KeepAlive(oid)
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(tree)
 	if cerr < 0 {
 		return nil, MakeGitError(cerr)
 	}

config.go

@@ -52,7 +52,6 @@ func newConfigEntryFromC(centry *C.git_config_entry) *ConfigEntry {
 }
 
 type Config struct {
-	doNotCompare
 	ptr *C.git_config
 }
 
@@ -78,8 +77,7 @@ func (c *Config) AddFile(path string, level ConfigLevel, force bool) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_config_add_file_ondisk(c.ptr, cpath, C.git_config_level_t(level), nil, cbool(force))
-	runtime.KeepAlive(c)
+	ret := C.git_config_add_file_ondisk(c.ptr, cpath, C.git_config_level_t(level), cbool(force))
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -96,7 +94,6 @@ func (c *Config) LookupInt32(name string) (int32, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_get_int32(&out, c.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return 0, MakeGitError(ret)
 	}
@@ -113,7 +110,6 @@ func (c *Config) LookupInt64(name string) (int64, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_get_int64(&out, c.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return 0, MakeGitError(ret)
 	}
@@ -130,12 +126,10 @@ func (c *Config) LookupString(name string) (string, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_config_get_string_buf(&valBuf, c.ptr, cname)
-	runtime.KeepAlive(c)
-	if ret < 0 {
+	if ret := C.git_config_get_string_buf(&valBuf, c.ptr, cname); ret < 0 {
 		return "", MakeGitError(ret)
 	}
-	defer C.git_buf_dispose(&valBuf)
+	defer C.git_buf_free(&valBuf)
 
 	return C.GoString(valBuf.ptr), nil
 }
@@ -149,7 +143,6 @@ func (c *Config) LookupBool(name string) (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_get_bool(&out, c.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -169,7 +162,7 @@ func (c *Config) NewMultivarIterator(name, regexp string) (*ConfigIterator, erro
 		defer C.free(unsafe.Pointer(cregexp))
 	}
 
-	iter := &ConfigIterator{cfg: c}
+	iter := new(ConfigIterator)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -186,7 +179,7 @@ func (c *Config) NewMultivarIterator(name, regexp string) (*ConfigIterator, erro
 // NewIterator creates an iterator over each entry in the
 // configuration
 func (c *Config) NewIterator() (*ConfigIterator, error) {
-	iter := &ConfigIterator{cfg: c}
+	iter := new(ConfigIterator)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -202,7 +195,7 @@ func (c *Config) NewIterator() (*ConfigIterator, error) {
 // NewIteratorGlob creates an iterator over each entry in the
 // configuration whose name matches the given regular expression
 func (c *Config) NewIteratorGlob(regexp string) (*ConfigIterator, error) {
-	iter := &ConfigIterator{cfg: c}
+	iter := new(ConfigIterator)
 	cregexp := C.CString(regexp)
 	defer C.free(unsafe.Pointer(cregexp))
 
@@ -228,7 +221,6 @@ func (c *Config) SetString(name, value string) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_set_string(c.ptr, cname, cvalue)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -249,7 +241,6 @@ func (c *Config) SetInt32(name string, value int32) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_set_int32(c.ptr, cname, C.int32_t(value))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -265,7 +256,6 @@ func (c *Config) SetInt64(name string, value int64) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_set_int64(c.ptr, cname, C.int64_t(value))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -281,7 +271,6 @@ func (c *Config) SetBool(name string, value bool) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_set_bool(c.ptr, cname, cbool(value))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -303,7 +292,6 @@ func (c *Config) SetMultivar(name, regexp, value string) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_set_multivar(c.ptr, cname, cregexp, cvalue)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -319,7 +307,7 @@ func (c *Config) Delete(name string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_delete_entry(c.ptr, cname)
-	runtime.KeepAlive(c)
+
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -335,8 +323,6 @@ func (c *Config) OpenLevel(parent *Config, level ConfigLevel) (*Config, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_config_open_level(&config.ptr, parent.ptr, C.git_config_level_t(level))
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(parent)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -345,7 +331,7 @@ func (c *Config) OpenLevel(parent *Config, level ConfigLevel) (*Config, error) {
 }
 
 // OpenOndisk creates a new config instance containing a single on-disk file
-func OpenOndisk(path string) (*Config, error) {
+func OpenOndisk(parent *Config, path string) (*Config, error) {
 	cpath := C.CString(path)
 	defer C.free(unsafe.Pointer(cpath))
 
@@ -362,9 +348,7 @@ func OpenOndisk(path string) (*Config, error) {
 }
 
 type ConfigIterator struct {
-	doNotCompare
 	ptr *C.git_config_iterator
-	cfg *Config
 }
 
 // Next returns the next entry for this iterator
@@ -379,10 +363,7 @@ func (iter *ConfigIterator) Next() (*ConfigEntry, error) {
 		return nil, MakeGitError(ret)
 	}
 
-	entry := newConfigEntryFromC(centry)
-	runtime.KeepAlive(iter)
-
-	return entry, nil
+	return newConfigEntryFromC(centry), nil
 }
 
 func (iter *ConfigIterator) Free() {
@@ -392,7 +373,7 @@ func (iter *ConfigIterator) Free() {
 
 func ConfigFindGlobal() (string, error) {
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -407,7 +388,7 @@ func ConfigFindGlobal() (string, error) {
 
 func ConfigFindSystem() (string, error) {
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -422,7 +403,7 @@ func ConfigFindSystem() (string, error) {
 
 func ConfigFindXDG() (string, error) {
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -440,7 +421,7 @@ func ConfigFindXDG() (string, error) {
 // Look for the file in %PROGRAMDATA%\Git\config used by portable git.
 func ConfigFindProgramdata() (string, error) {
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -452,17 +433,3 @@ func ConfigFindProgramdata() (string, error) {
 
 	return C.GoString(buf.ptr), nil
 }
-
-// OpenDefault opens the default config according to git rules
-func OpenDefault() (*Config, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	config := new(Config)
-
-	if ret := C.git_config_open_default(&config.ptr); ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return config, nil
-}

config_test.go

@@ -13,7 +13,7 @@ func setupConfig() (*Config, error) {
 		err error
 	)
 
-	c, err = OpenOndisk(tempConfig)
+	c, err = OpenOndisk(nil, tempConfig)
 	if err != nil {
 		return nil, err
 	}
@@ -62,7 +62,7 @@ var tests = []TestRunner{
 			t.Errorf("Got LookupBool error: '%v', expected none\n", err)
 		}
 		if !val {
-			t.Errorf("Got %t from LookupBool, expected 'false'\n", val)
+			t.Errorf("Got %b from LookupBool, expected 'false'\n", val)
 		}
 	},
 	// LookupInt32
@@ -107,13 +107,3 @@ func TestConfigLookups(t *testing.T) {
 		test(c, t)
 	}
 }
-
-func TestOpenDefault(t *testing.T) {
-
-	c, err := OpenDefault()
-	if err != nil {
-		t.Errorf("OpenDefault error: '%v'. Expected none\n", err)
-		return
-	}
-	defer c.Free()
-}

credentials.go

@@ -2,177 +2,52 @@ package git
 
 /*
 #include <git2.h>
-#include <git2/credential.h>
-#include <git2/sys/credential.h>
-
-git_credential_t _go_git_credential_credtype(git_credential *cred);
-void _go_git_populate_credential_ssh_custom(git_credential_ssh_custom *cred);
 */
 import "C"
-import (
-	"crypto/rand"
-	"errors"
-	"fmt"
-	"runtime"
-	"strings"
-	"unsafe"
+import "unsafe"
 
-	"golang.org/x/crypto/ssh"
-)
-
-// CredentialType is a bitmask of supported credential types.
-//
-// This represents the various types of authentication methods supported by the
-// library.
-type CredentialType uint
+type CredType uint
 
 const (
-	CredentialTypeUserpassPlaintext CredentialType = C.GIT_CREDENTIAL_USERPASS_PLAINTEXT
-	CredentialTypeSSHKey            CredentialType = C.GIT_CREDENTIAL_SSH_KEY
-	CredentialTypeSSHCustom         CredentialType = C.GIT_CREDENTIAL_SSH_CUSTOM
-	CredentialTypeDefault           CredentialType = C.GIT_CREDENTIAL_DEFAULT
-	CredentialTypeSSHInteractive    CredentialType = C.GIT_CREDENTIAL_SSH_INTERACTIVE
-	CredentialTypeUsername          CredentialType = C.GIT_CREDENTIAL_USERNAME
-	CredentialTypeSSHMemory         CredentialType = C.GIT_CREDENTIAL_SSH_MEMORY
+	CredTypeUserpassPlaintext CredType = C.GIT_CREDTYPE_USERPASS_PLAINTEXT
+	CredTypeSshKey            CredType = C.GIT_CREDTYPE_SSH_KEY
+	CredTypeSshCustom         CredType = C.GIT_CREDTYPE_SSH_CUSTOM
+	CredTypeDefault           CredType = C.GIT_CREDTYPE_DEFAULT
 )
 
-func (t CredentialType) String() string {
-	if t == 0 {
-		return "CredentialType(0)"
-	}
-
-	var parts []string
-
-	if (t & CredentialTypeUserpassPlaintext) != 0 {
-		parts = append(parts, "UserpassPlaintext")
-		t &= ^CredentialTypeUserpassPlaintext
-	}
-	if (t & CredentialTypeSSHKey) != 0 {
-		parts = append(parts, "SSHKey")
-		t &= ^CredentialTypeSSHKey
-	}
-	if (t & CredentialTypeSSHCustom) != 0 {
-		parts = append(parts, "SSHCustom")
-		t &= ^CredentialTypeSSHCustom
-	}
-	if (t & CredentialTypeDefault) != 0 {
-		parts = append(parts, "Default")
-		t &= ^CredentialTypeDefault
-	}
-	if (t & CredentialTypeSSHInteractive) != 0 {
-		parts = append(parts, "SSHInteractive")
-		t &= ^CredentialTypeSSHInteractive
-	}
-	if (t & CredentialTypeUsername) != 0 {
-		parts = append(parts, "Username")
-		t &= ^CredentialTypeUsername
-	}
-	if (t & CredentialTypeSSHMemory) != 0 {
-		parts = append(parts, "SSHMemory")
-		t &= ^CredentialTypeSSHMemory
-	}
-
-	if t != 0 {
-		parts = append(parts, fmt.Sprintf("CredentialType(%#x)", t))
-	}
-
-	return strings.Join(parts, "|")
+type Cred struct {
+	ptr *C.git_cred
 }
 
-type Credential struct {
-	doNotCompare
-	ptr *C.git_credential
-}
-
-func newCredential() *Credential {
-	cred := &Credential{}
-	runtime.SetFinalizer(cred, (*Credential).Free)
-	return cred
-}
-
-func (o *Credential) HasUsername() bool {
-	if C.git_credential_has_username(o.ptr) == 1 {
+func (o *Cred) HasUsername() bool {
+	if C.git_cred_has_username(o.ptr) == 1 {
 		return true
 	}
 	return false
 }
 
-func (o *Credential) Type() CredentialType {
-	return (CredentialType)(C._go_git_credential_credtype(o.ptr))
+func (o *Cred) Type() CredType {
+	return (CredType)(o.ptr.credtype)
 }
 
-func (o *Credential) Free() {
-	C.git_credential_free(o.ptr)
-	runtime.SetFinalizer(o, nil)
-	o.ptr = nil
+func credFromC(ptr *C.git_cred) *Cred {
+	return &Cred{ptr}
 }
 
-// GetUserpassPlaintext returns the plaintext username/password combination stored in the Cred.
-func (o *Credential) GetUserpassPlaintext() (username, password string, err error) {
-	if o.Type() != CredentialTypeUserpassPlaintext {
-		err = errors.New("credential is not userpass plaintext")
-		return
-	}
-
-	plaintextCredPtr := (*C.git_cred_userpass_plaintext)(unsafe.Pointer(o.ptr))
-	username = C.GoString(plaintextCredPtr.username)
-	password = C.GoString(plaintextCredPtr.password)
-	return
-}
-
-// GetSSHKey returns the SSH-specific key information from the Cred object.
-func (o *Credential) GetSSHKey() (username, publickey, privatekey, passphrase string, err error) {
-	if o.Type() != CredentialTypeSSHKey && o.Type() != CredentialTypeSSHMemory {
-		err = fmt.Errorf("credential is not an SSH key: %v", o.Type())
-		return
-	}
-
-	sshKeyCredPtr := (*C.git_cred_ssh_key)(unsafe.Pointer(o.ptr))
-	username = C.GoString(sshKeyCredPtr.username)
-	publickey = C.GoString(sshKeyCredPtr.publickey)
-	privatekey = C.GoString(sshKeyCredPtr.privatekey)
-	passphrase = C.GoString(sshKeyCredPtr.passphrase)
-	return
-}
-
-func NewCredentialUsername(username string) (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
-	cusername := C.CString(username)
-	ret := C.git_credential_username_new(&cred.ptr, cusername)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
-}
-
-func NewCredentialUserpassPlaintext(username string, password string) (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
+func NewCredUserpassPlaintext(username string, password string) (int, Cred) {
+	cred := Cred{}
 	cusername := C.CString(username)
 	defer C.free(unsafe.Pointer(cusername))
 	cpassword := C.CString(password)
 	defer C.free(unsafe.Pointer(cpassword))
-	ret := C.git_credential_userpass_plaintext_new(&cred.ptr, cusername, cpassword)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
+	ret := C.git_cred_userpass_plaintext_new(&cred.ptr, cusername, cpassword)
+	return int(ret), cred
 }
 
-// NewCredentialSSHKey creates new ssh credentials reading the public and private keys
+// NewCredSshKey creates new ssh credentials reading the public and private keys
 // from the file system.
-func NewCredentialSSHKey(username string, publicKeyPath string, privateKeyPath string, passphrase string) (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
+func NewCredSshKey(username string, publicKeyPath string, privateKeyPath string, passphrase string) (int, Cred) {
+	cred := Cred{}
 	cusername := C.CString(username)
 	defer C.free(unsafe.Pointer(cusername))
 	cpublickey := C.CString(publicKeyPath)
@@ -181,21 +56,14 @@ func NewCredentialSSHKey(username string, publicKeyPath string, privateKeyPath s
 	defer C.free(unsafe.Pointer(cprivatekey))
 	cpassphrase := C.CString(passphrase)
 	defer C.free(unsafe.Pointer(cpassphrase))
-	ret := C.git_credential_ssh_key_new(&cred.ptr, cusername, cpublickey, cprivatekey, cpassphrase)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
+	ret := C.git_cred_ssh_key_new(&cred.ptr, cusername, cpublickey, cprivatekey, cpassphrase)
+	return int(ret), cred
 }
 
-// NewCredentialSSHKeyFromMemory creates new ssh credentials using the publicKey and privateKey
+// NewCredSshKeyFromMemory creates new ssh credentials using the publicKey and privateKey
 // arguments as the values for the public and private keys.
-func NewCredentialSSHKeyFromMemory(username string, publicKey string, privateKey string, passphrase string) (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
+func NewCredSshKeyFromMemory(username string, publicKey string, privateKey string, passphrase string) (int, Cred) {
+	cred := Cred{}
 	cusername := C.CString(username)
 	defer C.free(unsafe.Pointer(cusername))
 	cpublickey := C.CString(publicKey)
@@ -204,95 +72,20 @@ func NewCredentialSSHKeyFromMemory(username string, publicKey string, privateKey
 	defer C.free(unsafe.Pointer(cprivatekey))
 	cpassphrase := C.CString(passphrase)
 	defer C.free(unsafe.Pointer(cpassphrase))
-	ret := C.git_credential_ssh_key_memory_new(&cred.ptr, cusername, cpublickey, cprivatekey, cpassphrase)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
+	ret := C.git_cred_ssh_key_memory_new(&cred.ptr, cusername, cpublickey, cprivatekey, cpassphrase)
+	return int(ret), cred
 }
 
-func NewCredentialSSHKeyFromAgent(username string) (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
+func NewCredSshKeyFromAgent(username string) (int, Cred) {
+	cred := Cred{}
 	cusername := C.CString(username)
 	defer C.free(unsafe.Pointer(cusername))
-	ret := C.git_credential_ssh_key_from_agent(&cred.ptr, cusername)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
+	ret := C.git_cred_ssh_key_from_agent(&cred.ptr, cusername)
+	return int(ret), cred
 }
 
-type credentialSSHCustomData struct {
-	signer ssh.Signer
-}
-
-//export credentialSSHCustomFree
-func credentialSSHCustomFree(cred *C.git_credential_ssh_custom) {
-	if cred == nil {
-		return
-	}
-
-	C.free(unsafe.Pointer(cred.username))
-	C.free(unsafe.Pointer(cred.publickey))
-	pointerHandles.Untrack(cred.payload)
-	C.free(unsafe.Pointer(cred))
-}
-
-//export credentialSSHSignCallback
-func credentialSSHSignCallback(
-	errorMessage **C.char,
-	sig **C.uchar,
-	sig_len *C.size_t,
-	data *C.uchar,
-	data_len C.size_t,
-	handle unsafe.Pointer,
-) C.int {
-	signer := pointerHandles.Get(handle).(*credentialSSHCustomData).signer
-	signature, err := signer.Sign(rand.Reader, C.GoBytes(unsafe.Pointer(data), C.int(data_len)))
-	if err != nil {
-		return setCallbackError(errorMessage, err)
-	}
-	*sig = (*C.uchar)(C.CBytes(signature.Blob))
-	*sig_len = C.size_t(len(signature.Blob))
-	return C.int(ErrorCodeOK)
-}
-
-// NewCredentialSSHKeyFromSigner creates new SSH credentials using the provided signer.
-func NewCredentialSSHKeyFromSigner(username string, signer ssh.Signer) (*Credential, error) {
-	publicKey := signer.PublicKey().Marshal()
-
-	ccred := (*C.git_credential_ssh_custom)(C.calloc(1, C.size_t(unsafe.Sizeof(C.git_credential_ssh_custom{}))))
-	ccred.parent.credtype = C.GIT_CREDENTIAL_SSH_CUSTOM
-	ccred.username = C.CString(username)
-	ccred.publickey = (*C.char)(C.CBytes(publicKey))
-	ccred.publickey_len = C.size_t(len(publicKey))
-	C._go_git_populate_credential_ssh_custom(ccred)
-
-	data := credentialSSHCustomData{
-		signer: signer,
-	}
-	ccred.payload = pointerHandles.Track(&data)
-
-	cred := newCredential()
-	cred.ptr = &ccred.parent
-
-	return cred, nil
-}
-
-func NewCredentialDefault() (*Credential, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cred := newCredential()
-	ret := C.git_credential_default_new(&cred.ptr)
-	if ret != 0 {
-		cred.Free()
-		return nil, MakeGitError(ret)
-	}
-	return cred, nil
+func NewCredDefault() (int, Cred) {
+	cred := Cred{}
+	ret := C.git_cred_default_new(&cred.ptr)
+	return int(ret), cred
 }

delta_string.go

@@ -1,33 +0,0 @@
-// Code generated by "stringer -type Delta -trimprefix Delta -tags static"; DO NOT EDIT.
-
-package git
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[DeltaUnmodified-0]
-	_ = x[DeltaAdded-1]
-	_ = x[DeltaDeleted-2]
-	_ = x[DeltaModified-3]
-	_ = x[DeltaRenamed-4]
-	_ = x[DeltaCopied-5]
-	_ = x[DeltaIgnored-6]
-	_ = x[DeltaUntracked-7]
-	_ = x[DeltaTypeChange-8]
-	_ = x[DeltaUnreadable-9]
-	_ = x[DeltaConflicted-10]
-}
-
-const _Delta_name = "UnmodifiedAddedDeletedModifiedRenamedCopiedIgnoredUntrackedTypeChangeUnreadableConflicted"
-
-var _Delta_index = [...]uint8{0, 10, 15, 22, 30, 37, 43, 50, 59, 69, 79, 89}
-
-func (i Delta) String() string {
-	if i < 0 || i >= Delta(len(_Delta_index)-1) {
-		return "Delta(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-	return _Delta_name[_Delta_index[i]:_Delta_index[i+1]]
-}

deprecated.go

@@ -1,271 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-*/
-import "C"
-import (
-	"unsafe"
-)
-
-// The constants, functions, and types in this files are slated for deprecation
-// in the next major version.
-
-// blob.go
-
-// Deprecated: BlobChunkCallback is not used.
-type BlobChunkCallback func(maxLen int) ([]byte, error)
-
-// Deprecated: BlobCallbackData is not used.
-type BlobCallbackData struct {
-	Callback BlobChunkCallback
-	Error    error
-}
-
-// checkout.go
-
-// Deprecated: CheckoutOpts is a deprecated alias of CheckoutOptions.
-type CheckoutOpts = CheckoutOptions
-
-// credentials.go
-
-// Deprecated: CredType is a deprecated alias of CredentialType
-type CredType = CredentialType
-
-const (
-	CredTypeUserpassPlaintext = CredentialTypeUserpassPlaintext
-	CredTypeSshKey            = CredentialTypeSSHKey
-	CredTypeSshCustom         = CredentialTypeSSHCustom
-	CredTypeDefault           = CredentialTypeDefault
-)
-
-// Deprecated: Cred is a deprecated alias of Credential
-type Cred = Credential
-
-// Deprecated: NewCredUsername is a deprecated alias of NewCredentialUsername.
-func NewCredUsername(username string) (*Cred, error) {
-	return NewCredentialUsername(username)
-}
-
-// Deprecated: NewCredUserpassPlaintext is a deprecated alias of NewCredentialUserpassPlaintext.
-func NewCredUserpassPlaintext(username string, password string) (*Cred, error) {
-	return NewCredentialUserpassPlaintext(username, password)
-}
-
-// Deprecated: NewCredSshKey is a deprecated alias of NewCredentialSshKey.
-func NewCredSshKey(username string, publicKeyPath string, privateKeyPath string, passphrase string) (*Cred, error) {
-	return NewCredentialSSHKey(username, publicKeyPath, privateKeyPath, passphrase)
-}
-
-// Deprecated: NewCredSshKeyFromMemory is a deprecated alias of NewCredentialSSHKeyFromMemory.
-func NewCredSshKeyFromMemory(username string, publicKey string, privateKey string, passphrase string) (*Cred, error) {
-	return NewCredentialSSHKeyFromMemory(username, publicKey, privateKey, passphrase)
-}
-
-// Deprecated: NewCredSshKeyFromAgent is a deprecated alias of NewCredentialSSHFromAgent.
-func NewCredSshKeyFromAgent(username string) (*Cred, error) {
-	return NewCredentialSSHKeyFromAgent(username)
-}
-
-// Deprecated: NewCredDefault is a deprecated alias fof NewCredentialDefault.
-func NewCredDefault() (*Cred, error) {
-	return NewCredentialDefault()
-}
-
-// diff.go
-
-const (
-	// Deprecated: DiffIgnoreWhitespaceEol is a deprecated alias of DiffIgnoreWhitespaceEOL.
-	DiffIgnoreWitespaceEol = DiffIgnoreWhitespaceEOL
-)
-
-// features.go
-
-const (
-	// Deprecated: FeatureHttps is a deprecated alias of FeatureHTTPS.
-	FeatureHttps = FeatureHTTPS
-
-	// Deprecated: FeatureSsh is a deprecated alias of FeatureSSH.
-	FeatureSsh = FeatureSSH
-)
-
-// git.go
-
-const (
-	// Deprecated: ErrClassNone is a deprecated alias of ErrorClassNone.
-	ErrClassNone = ErrorClassNone
-	// Deprecated: ErrClassNoMemory is a deprecated alias of ErrorClassNoMemory.
-	ErrClassNoMemory = ErrorClassNoMemory
-	// Deprecated: ErrClassOs is a deprecated alias of ErrorClassOS.
-	ErrClassOs = ErrorClassOS
-	// Deprecated: ErrClassInvalid is a deprecated alias of ErrorClassInvalid.
-	ErrClassInvalid = ErrorClassInvalid
-	// Deprecated: ErrClassReference is a deprecated alias of ErrorClassReference.
-	ErrClassReference = ErrorClassReference
-	// Deprecated: ErrClassZlib is a deprecated alias of ErrorClassZlib.
-	ErrClassZlib = ErrorClassZlib
-	// Deprecated: ErrClassRepository is a deprecated alias of ErrorClassRepository.
-	ErrClassRepository = ErrorClassRepository
-	// Deprecated: ErrClassConfig is a deprecated alias of ErrorClassConfig.
-	ErrClassConfig = ErrorClassConfig
-	// Deprecated: ErrClassRegex is a deprecated alias of ErrorClassRegex.
-	ErrClassRegex = ErrorClassRegex
-	// Deprecated: ErrClassOdb is a deprecated alias of ErrorClassOdb.
-	ErrClassOdb = ErrorClassOdb
-	// Deprecated: ErrClassIndex is a deprecated alias of ErrorClassIndex.
-	ErrClassIndex = ErrorClassIndex
-	// Deprecated: ErrClassObject is a deprecated alias of ErrorClassObject.
-	ErrClassObject = ErrorClassObject
-	// Deprecated: ErrClassNet is a deprecated alias of ErrorClassNet.
-	ErrClassNet = ErrorClassNet
-	// Deprecated: ErrClassTag is a deprecated alias of ErrorClassTag.
-	ErrClassTag = ErrorClassTag
-	// Deprecated: ErrClassTree is a deprecated alias of ErrorClassTree.
-	ErrClassTree = ErrorClassTree
-	// Deprecated: ErrClassIndexer is a deprecated alias of ErrorClassIndexer.
-	ErrClassIndexer = ErrorClassIndexer
-	// Deprecated: ErrClassSSL is a deprecated alias of ErrorClassSSL.
-	ErrClassSSL = ErrorClassSSL
-	// Deprecated: ErrClassSubmodule is a deprecated alias of ErrorClassSubmodule.
-	ErrClassSubmodule = ErrorClassSubmodule
-	// Deprecated: ErrClassThread is a deprecated alias of ErrorClassThread.
-	ErrClassThread = ErrorClassThread
-	// Deprecated: ErrClassStash is a deprecated alias of ErrorClassStash.
-	ErrClassStash = ErrorClassStash
-	// Deprecated: ErrClassCheckout is a deprecated alias of ErrorClassCheckout.
-	ErrClassCheckout = ErrorClassCheckout
-	// Deprecated: ErrClassFetchHead is a deprecated alias of ErrorClassFetchHead.
-	ErrClassFetchHead = ErrorClassFetchHead
-	// Deprecated: ErrClassMerge is a deprecated alias of ErrorClassMerge.
-	ErrClassMerge = ErrorClassMerge
-	// Deprecated: ErrClassSsh is a deprecated alias of ErrorClassSSH.
-	ErrClassSsh = ErrorClassSSH
-	// Deprecated: ErrClassFilter is a deprecated alias of ErrorClassFilter.
-	ErrClassFilter = ErrorClassFilter
-	// Deprecated: ErrClassRevert is a deprecated alias of ErrorClassRevert.
-	ErrClassRevert = ErrorClassRevert
-	// Deprecated: ErrClassCallback is a deprecated alias of ErrorClassCallback.
-	ErrClassCallback = ErrorClassCallback
-	// Deprecated: ErrClassRebase is a deprecated alias of ErrorClassRebase.
-	ErrClassRebase = ErrorClassRebase
-	// Deprecated: ErrClassPatch is a deprecated alias of ErrorClassPatch.
-	ErrClassPatch = ErrorClassPatch
-)
-
-const (
-	// Deprecated: ErrOk is a deprecated alias of ErrorCodeOK.
-	ErrOk = ErrorCodeOK
-	// Deprecated: ErrGeneric is a deprecated alias of ErrorCodeGeneric.
-	ErrGeneric = ErrorCodeGeneric
-	// Deprecated: ErrNotFound is a deprecated alias of ErrorCodeNotFound.
-	ErrNotFound = ErrorCodeNotFound
-	// Deprecated: ErrExists is a deprecated alias of ErrorCodeExists.
-	ErrExists = ErrorCodeExists
-	// Deprecated: ErrAmbiguous is a deprecated alias of ErrorCodeAmbiguous.
-	ErrAmbiguous = ErrorCodeAmbiguous
-	// Deprecated: ErrAmbigious is a deprecated alias of ErrorCodeAmbiguous.
-	ErrAmbigious = ErrorCodeAmbiguous
-	// Deprecated: ErrBuffs is a deprecated alias of ErrorCodeBuffs.
-	ErrBuffs = ErrorCodeBuffs
-	// Deprecated: ErrUser is a deprecated alias of ErrorCodeUser.
-	ErrUser = ErrorCodeUser
-	// Deprecated: ErrBareRepo is a deprecated alias of ErrorCodeBareRepo.
-	ErrBareRepo = ErrorCodeBareRepo
-	// Deprecated: ErrUnbornBranch is a deprecated alias of ErrorCodeUnbornBranch.
-	ErrUnbornBranch = ErrorCodeUnbornBranch
-	// Deprecated: ErrUnmerged is a deprecated alias of ErrorCodeUnmerged.
-	ErrUnmerged = ErrorCodeUnmerged
-	// Deprecated: ErrNonFastForward is a deprecated alias of ErrorCodeNonFastForward.
-	ErrNonFastForward = ErrorCodeNonFastForward
-	// Deprecated: ErrInvalidSpec is a deprecated alias of ErrorCodeInvalidSpec.
-	ErrInvalidSpec = ErrorCodeInvalidSpec
-	// Deprecated: ErrConflict is a deprecated alias of ErrorCodeConflict.
-	ErrConflict = ErrorCodeConflict
-	// Deprecated: ErrLocked is a deprecated alias of ErrorCodeLocked.
-	ErrLocked = ErrorCodeLocked
-	// Deprecated: ErrModified is a deprecated alias of ErrorCodeModified.
-	ErrModified = ErrorCodeModified
-	// Deprecated: ErrAuth is a deprecated alias of ErrorCodeAuth.
-	ErrAuth = ErrorCodeAuth
-	// Deprecated: ErrCertificate is a deprecated alias of ErrorCodeCertificate.
-	ErrCertificate = ErrorCodeCertificate
-	// Deprecated: ErrApplied is a deprecated alias of ErrorCodeApplied.
-	ErrApplied = ErrorCodeApplied
-	// Deprecated: ErrPeel is a deprecated alias of ErrorCodePeel.
-	ErrPeel = ErrorCodePeel
-	// Deprecated: ErrEOF is a deprecated alias of ErrorCodeEOF.
-	ErrEOF = ErrorCodeEOF
-	// Deprecated: ErrUncommitted is a deprecated alias of ErrorCodeUncommitted.
-	ErrUncommitted = ErrorCodeUncommitted
-	// Deprecated: ErrDirectory is a deprecated alias of ErrorCodeDirectory.
-	ErrDirectory = ErrorCodeDirectory
-	// Deprecated: ErrMergeConflict is a deprecated alias of ErrorCodeMergeConflict.
-	ErrMergeConflict = ErrorCodeMergeConflict
-	// Deprecated: ErrPassthrough is a deprecated alias of ErrorCodePassthrough.
-	ErrPassthrough = ErrorCodePassthrough
-	// Deprecated: ErrIterOver is a deprecated alias of ErrorCodeIterOver.
-	ErrIterOver = ErrorCodeIterOver
-	// Deprecated: ErrApplyFail is a deprecated alias of ErrorCodeApplyFail.
-	ErrApplyFail = ErrorCodeApplyFail
-)
-
-// index.go
-
-// Deprecated: IndexAddOpts is a deprecated alias of IndexAddOption.
-type IndexAddOpts = IndexAddOption
-
-// Deprecated: IndexStageOpts is a deprecated alias of IndexStageState.
-type IndexStageOpts = IndexStageState
-
-// submodule.go
-
-// Deprecated: SubmoduleCbk is a deprecated alias of SubmoduleCallback.
-type SubmoduleCbk = SubmoduleCallback
-
-// Deprecated: SubmoduleVisitor is not used.
-func SubmoduleVisitor(csub unsafe.Pointer, name *C.char, handle unsafe.Pointer) C.int {
-	sub := &Submodule{ptr: (*C.git_submodule)(csub)}
-
-	callback, ok := pointerHandles.Get(handle).(SubmoduleCallback)
-	if !ok {
-		panic("invalid submodule visitor callback")
-	}
-	err := callback(sub, C.GoString(name))
-	if err != nil {
-		return C.int(ErrorCodeUser)
-	}
-	return C.int(ErrorCodeOK)
-}
-
-// reference.go
-
-// Deprecated: ReferenceIsValidName is a deprecated alias of ReferenceNameIsValid.
-func ReferenceIsValidName(name string) bool {
-	valid, _ := ReferenceNameIsValid(name)
-	return valid
-}
-
-// remote.go
-
-// Deprecated: RemoteIsValidName is a deprecated alias of RemoteNameIsValid.
-func RemoteIsValidName(name string) bool {
-	valid, _ := RemoteNameIsValid(name)
-	return valid
-}
-
-// tree.go
-
-// Deprecated: CallbackGitTreeWalk is not used.
-func CallbackGitTreeWalk(_root *C.char, entry *C.git_tree_entry, ptr unsafe.Pointer) C.int {
-	root := C.GoString(_root)
-
-	callback, ok := pointerHandles.Get(ptr).(TreeWalkCallback)
-	if !ok {
-		panic("invalid treewalk callback")
-	}
-	err := callback(root, newTreeEntry(entry))
-	if err != nil {
-		return C.int(ErrorCodeUser)
-	}
-	return C.int(ErrorCodeOK)
-}

describe.go

@@ -43,7 +43,7 @@ func DefaultDescribeOptions() (DescribeOptions, error) {
 	defer runtime.UnlockOSThread()
 
 	opts := C.git_describe_options{}
-	ecode := C.git_describe_options_init(&opts, C.GIT_DESCRIBE_OPTIONS_VERSION)
+	ecode := C.git_describe_init_options(&opts, C.GIT_DESCRIBE_OPTIONS_VERSION)
 	if ecode < 0 {
 		return DescribeOptions{}, MakeGitError(ecode)
 	}
@@ -77,7 +77,7 @@ func DefaultDescribeFormatOptions() (DescribeFormatOptions, error) {
 	defer runtime.UnlockOSThread()
 
 	opts := C.git_describe_format_options{}
-	ecode := C.git_describe_format_options_init(&opts, C.GIT_DESCRIBE_FORMAT_OPTIONS_VERSION)
+	ecode := C.git_describe_init_format_options(&opts, C.GIT_DESCRIBE_FORMAT_OPTIONS_VERSION)
 	if ecode < 0 {
 		return DescribeFormatOptions{}, MakeGitError(ecode)
 	}
@@ -128,7 +128,6 @@ func (c *Commit) Describe(opts *DescribeOptions) (*DescribeResult, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_describe_commit(&resultPtr, c.ptr, cDescribeOpts)
-	runtime.KeepAlive(c)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -163,7 +162,6 @@ func (repo *Repository) DescribeWorkdir(opts *DescribeOptions) (*DescribeResult,
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_describe_workdir(&resultPtr, repo.ptr, cDescribeOpts)
-	runtime.KeepAlive(repo)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -176,7 +174,6 @@ func (repo *Repository) DescribeWorkdir(opts *DescribeOptions) (*DescribeResult,
 //
 // Use Format() to get a string out of it.
 type DescribeResult struct {
-	doNotCompare
 	ptr *C.git_describe_result
 }
 
@@ -209,11 +206,10 @@ func (result *DescribeResult) Format(opts *DescribeFormatOptions) (string, error
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_describe_format(&resultBuf, result.ptr, cFormatOpts)
-	runtime.KeepAlive(result)
 	if ecode < 0 {
 		return "", MakeGitError(ecode)
 	}
-	defer C.git_buf_dispose(&resultBuf)
+	defer C.git_buf_free(&resultBuf)
 
 	return C.GoString(resultBuf.ptr), nil
 }

diff.go

@@ -3,7 +3,6 @@ package git
 /*
 #include <git2.h>
 
-extern void _go_git_populate_apply_callbacks(git_apply_options *options);
 extern int _go_git_diff_foreach(git_diff *diff, int eachFile, int eachHunk, int eachLine, void *payload);
 extern void _go_git_setup_diff_notify_callbacks(git_diff_options* opts);
 extern int _go_git_diff_blobs(git_blob *old, const char *old_path, git_blob *new, const char *new_path, git_diff_options *opts, int eachFile, int eachHunk, int eachLine, void *payload);
@@ -15,7 +14,7 @@ import (
 	"unsafe"
 )
 
-type DiffFlag uint32
+type DiffFlag int
 
 const (
 	DiffFlagBinary    DiffFlag = C.GIT_DIFF_FLAG_BINARY
@@ -40,8 +39,6 @@ const (
 	DeltaConflicted Delta = C.GIT_DELTA_CONFLICTED
 )
 
-//go:generate stringer -type Delta -trimprefix Delta -tags static
-
 type DiffLineType int
 
 const (
@@ -57,8 +54,6 @@ const (
 	DiffLineBinary  DiffLineType = C.GIT_DIFF_LINE_BINARY
 )
 
-//go:generate stringer -type DiffLineType -trimprefix DiffLine -tags static
-
 type DiffFile struct {
 	Path  string
 	Oid   *Oid
@@ -132,45 +127,31 @@ func diffLineFromC(line *C.git_diff_line) DiffLine {
 }
 
 type Diff struct {
-	doNotCompare
-	ptr          *C.git_diff
-	repo         *Repository
-	runFinalizer bool
+	ptr *C.git_diff
 }
 
 func (diff *Diff) NumDeltas() (int, error) {
 	if diff.ptr == nil {
 		return -1, ErrInvalid
 	}
-	ret := int(C.git_diff_num_deltas(diff.ptr))
-	runtime.KeepAlive(diff)
-	return ret, nil
+	return int(C.git_diff_num_deltas(diff.ptr)), nil
 }
 
-func (diff *Diff) Delta(index int) (DiffDelta, error) {
+func (diff *Diff) GetDelta(index int) (DiffDelta, error) {
 	if diff.ptr == nil {
 		return DiffDelta{}, ErrInvalid
 	}
 	ptr := C.git_diff_get_delta(diff.ptr, C.size_t(index))
-	ret := diffDeltaFromC(ptr)
-	runtime.KeepAlive(diff)
-	return ret, nil
+	return diffDeltaFromC(ptr), nil
 }
 
-// deprecated: You should use `Diff.Delta()` instead.
-func (diff *Diff) GetDelta(index int) (DiffDelta, error) {
-	return diff.Delta(index)
-}
-
-func newDiffFromC(ptr *C.git_diff, repo *Repository) *Diff {
+func newDiffFromC(ptr *C.git_diff) *Diff {
 	if ptr == nil {
 		return nil
 	}
 
 	diff := &Diff{
-		ptr:          ptr,
-		repo:         repo,
-		runFinalizer: true,
+		ptr: ptr,
 	}
 
 	runtime.SetFinalizer(diff, (*Diff).Free)
@@ -181,11 +162,6 @@ func (diff *Diff) Free() error {
 	if diff.ptr == nil {
 		return ErrInvalid
 	}
-	if !diff.runFinalizer {
-		// This is the case with the Diff objects that are involved in the DiffNotifyCallback.
-		diff.ptr = nil
-		return nil
-	}
 	runtime.SetFinalizer(diff, nil)
 	C.git_diff_free(diff.ptr)
 	diff.ptr = nil
@@ -211,7 +187,6 @@ func (diff *Diff) FindSimilar(opts *DiffFindOptions) error {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_diff_find_similar(diff.ptr, copts)
-	runtime.KeepAlive(diff)
 	if ecode < 0 {
 		return MakeGitError(ecode)
 	}
@@ -220,7 +195,6 @@ func (diff *Diff) FindSimilar(opts *DiffFindOptions) error {
 }
 
 type DiffStats struct {
-	doNotCompare
 	ptr *C.git_diff_stats
 }
 
@@ -235,21 +209,15 @@ func (stats *DiffStats) Free() error {
 }
 
 func (stats *DiffStats) Insertions() int {
-	ret := int(C.git_diff_stats_insertions(stats.ptr))
-	runtime.KeepAlive(stats)
-	return ret
+	return int(C.git_diff_stats_insertions(stats.ptr))
 }
 
 func (stats *DiffStats) Deletions() int {
-	ret := int(C.git_diff_stats_deletions(stats.ptr))
-	runtime.KeepAlive(stats)
-	return ret
+	return int(C.git_diff_stats_deletions(stats.ptr))
 }
 
 func (stats *DiffStats) FilesChanged() int {
-	ret := int(C.git_diff_stats_files_changed(stats.ptr))
-	runtime.KeepAlive(stats)
-	return ret
+	return int(C.git_diff_stats_files_changed(stats.ptr))
 }
 
 type DiffStatsFormat int
@@ -265,14 +233,13 @@ const (
 func (stats *DiffStats) String(format DiffStatsFormat,
 	width uint) (string, error) {
 	buf := C.git_buf{}
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_diff_stats_to_buf(&buf,
 		stats.ptr, C.git_diff_stats_format_t(format), C.size_t(width))
-	runtime.KeepAlive(stats)
 	if ret < 0 {
 		return "", MakeGitError(ret)
 	}
@@ -286,9 +253,7 @@ func (diff *Diff) Stats() (*DiffStats, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_diff_get_stats(&stats.ptr, diff.ptr)
-	runtime.KeepAlive(diff)
-	if ecode < 0 {
+	if ecode := C.git_diff_get_stats(&stats.ptr, diff.ptr); ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
 	runtime.SetFinalizer(stats, (*DiffStats).Free)
@@ -296,14 +261,14 @@ func (diff *Diff) Stats() (*DiffStats, error) {
 	return stats, nil
 }
 
-type diffForEachCallbackData struct {
-	fileCallback DiffForEachFileCallback
-	hunkCallback DiffForEachHunkCallback
-	lineCallback DiffForEachLineCallback
-	errorTarget  *error
+type diffForEachData struct {
+	FileCallback DiffForEachFileCallback
+	HunkCallback DiffForEachHunkCallback
+	LineCallback DiffForEachLineCallback
+	Error        error
 }
 
-type DiffForEachFileCallback func(delta DiffDelta, progress float64) (DiffForEachHunkCallback, error)
+type DiffForEachFileCallback func(DiffDelta, float64) (DiffForEachHunkCallback, error)
 
 type DiffDetail int
 
@@ -328,91 +293,81 @@ func (diff *Diff) ForEach(cbFile DiffForEachFileCallback, detail DiffDetail) err
 		intLines = C.int(1)
 	}
 
-	var err error
-	data := &diffForEachCallbackData{
-		fileCallback: cbFile,
-		errorTarget:  &err,
+	data := &diffForEachData{
+		FileCallback: cbFile,
 	}
 
 	handle := pointerHandles.Track(data)
 	defer pointerHandles.Untrack(handle)
 
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C._go_git_diff_foreach(diff.ptr, 1, intHunks, intLines, handle)
-	runtime.KeepAlive(diff)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	ecode := C._go_git_diff_foreach(diff.ptr, 1, intHunks, intLines, handle)
+	if ecode < 0 {
+		return data.Error
 	}
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
 	return nil
 }
 
-//export diffForEachFileCallback
-func diffForEachFileCallback(delta *C.git_diff_delta, progress C.float, handle unsafe.Pointer) C.int {
+//export diffForEachFileCb
+func diffForEachFileCb(delta *C.git_diff_delta, progress C.float, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*diffForEachCallbackData)
+	data, ok := payload.(*diffForEachData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
 
-	data.hunkCallback = nil
-	if data.fileCallback != nil {
-		cb, err := data.fileCallback(diffDeltaFromC(delta), float64(progress))
+	data.HunkCallback = nil
+	if data.FileCallback != nil {
+		cb, err := data.FileCallback(diffDeltaFromC(delta), float64(progress))
 		if err != nil {
-			*data.errorTarget = err
-			return C.int(ErrorCodeUser)
+			data.Error = err
+			return -1
 		}
-		data.hunkCallback = cb
+		data.HunkCallback = cb
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 type DiffForEachHunkCallback func(DiffHunk) (DiffForEachLineCallback, error)
 
-//export diffForEachHunkCallback
-func diffForEachHunkCallback(delta *C.git_diff_delta, hunk *C.git_diff_hunk, handle unsafe.Pointer) C.int {
+//export diffForEachHunkCb
+func diffForEachHunkCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*diffForEachCallbackData)
+	data, ok := payload.(*diffForEachData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
 
-	data.lineCallback = nil
-	if data.hunkCallback != nil {
-		cb, err := data.hunkCallback(diffHunkFromC(hunk))
+	data.LineCallback = nil
+	if data.HunkCallback != nil {
+		cb, err := data.HunkCallback(diffHunkFromC(hunk))
 		if err != nil {
-			*data.errorTarget = err
-			return C.int(ErrorCodeUser)
+			data.Error = err
+			return -1
 		}
-		data.lineCallback = cb
+		data.LineCallback = cb
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 type DiffForEachLineCallback func(DiffLine) error
 
-//export diffForEachLineCallback
-func diffForEachLineCallback(delta *C.git_diff_delta, hunk *C.git_diff_hunk, line *C.git_diff_line, handle unsafe.Pointer) C.int {
+//export diffForEachLineCb
+func diffForEachLineCb(delta *C.git_diff_delta, hunk *C.git_diff_hunk, line *C.git_diff_line, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*diffForEachCallbackData)
+	data, ok := payload.(*diffForEachData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
 
-	err := data.lineCallback(diffLineFromC(line))
+	err := data.LineCallback(diffLineFromC(line))
 	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+		data.Error = err
+		return -1
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 func (diff *Diff) Patch(deltaIndex int) (*Patch, error) {
@@ -425,7 +380,6 @@ func (diff *Diff) Patch(deltaIndex int) (*Patch, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_patch_from_diff(&patchPtr, diff.ptr, C.size_t(deltaIndex))
-	runtime.KeepAlive(diff)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -433,36 +387,6 @@ func (diff *Diff) Patch(deltaIndex int) (*Patch, error) {
 	return newPatchFromC(patchPtr), nil
 }
 
-type DiffFormat int
-
-const (
-	DiffFormatPatch       DiffFormat = C.GIT_DIFF_FORMAT_PATCH
-	DiffFormatPatchHeader DiffFormat = C.GIT_DIFF_FORMAT_PATCH_HEADER
-	DiffFormatRaw         DiffFormat = C.GIT_DIFF_FORMAT_RAW
-	DiffFormatNameOnly    DiffFormat = C.GIT_DIFF_FORMAT_NAME_ONLY
-	DiffFormatNameStatus  DiffFormat = C.GIT_DIFF_FORMAT_NAME_STATUS
-)
-
-func (diff *Diff) ToBuf(format DiffFormat) ([]byte, error) {
-	if diff.ptr == nil {
-		return nil, ErrInvalid
-	}
-
-	diffBuf := C.git_buf{}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_diff_to_buf(&diffBuf, diff.ptr, C.git_diff_format_t(format))
-	runtime.KeepAlive(diff)
-	if ecode < 0 {
-		return nil, MakeGitError(ecode)
-	}
-	defer C.git_buf_dispose(&diffBuf)
-
-	return C.GoBytes(unsafe.Pointer(diffBuf.ptr), C.int(diffBuf.size)), nil
-}
-
 type DiffOptionsFlag int
 
 const (
@@ -489,14 +413,12 @@ const (
 
 	DiffIgnoreWhitespace       DiffOptionsFlag = C.GIT_DIFF_IGNORE_WHITESPACE
 	DiffIgnoreWhitespaceChange DiffOptionsFlag = C.GIT_DIFF_IGNORE_WHITESPACE_CHANGE
-	DiffIgnoreWhitespaceEOL    DiffOptionsFlag = C.GIT_DIFF_IGNORE_WHITESPACE_EOL
+	DiffIgnoreWitespaceEol     DiffOptionsFlag = C.GIT_DIFF_IGNORE_WHITESPACE_EOL
 
 	DiffShowUntrackedContent DiffOptionsFlag = C.GIT_DIFF_SHOW_UNTRACKED_CONTENT
 	DiffShowUnmodified       DiffOptionsFlag = C.GIT_DIFF_SHOW_UNMODIFIED
 	DiffPatience             DiffOptionsFlag = C.GIT_DIFF_PATIENCE
 	DiffMinimal              DiffOptionsFlag = C.GIT_DIFF_MINIMAL
-	DiffShowBinary           DiffOptionsFlag = C.GIT_DIFF_SHOW_BINARY
-	DiffIndentHeuristic      DiffOptionsFlag = C.GIT_DIFF_INDENT_HEURISTIC
 )
 
 type DiffNotifyCallback func(diffSoFar *Diff, deltaToAdd DiffDelta, matchedPathspec string) error
@@ -523,7 +445,7 @@ func DefaultDiffOptions() (DiffOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_diff_options_init(&opts, C.GIT_DIFF_OPTIONS_VERSION)
+	ecode := C.git_diff_init_options(&opts, C.GIT_DIFF_OPTIONS_VERSION)
 	if ecode < 0 {
 		return DiffOptions{}, MakeGitError(ecode)
 	}
@@ -562,7 +484,7 @@ const (
 	DiffFindRemoveUnmodified            DiffFindOptionsFlag = C.GIT_DIFF_FIND_REMOVE_UNMODIFIED
 )
 
-// TODO implement git_diff_similarity_metric
+//TODO implement git_diff_similarity_metric
 type DiffFindOptions struct {
 	Flags                      DiffFindOptionsFlag
 	RenameThreshold            uint16
@@ -578,7 +500,7 @@ func DefaultDiffFindOptions() (DiffFindOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_diff_find_options_init(&opts, C.GIT_DIFF_FIND_OPTIONS_VERSION)
+	ecode := C.git_diff_find_init_options(&opts, C.GIT_DIFF_FIND_OPTIONS_VERSION)
 	if ecode < 0 {
 		return DiffFindOptions{}, MakeGitError(ecode)
 	}
@@ -597,92 +519,83 @@ var (
 	ErrDeltaSkip = errors.New("Skip delta")
 )
 
-type diffNotifyCallbackData struct {
-	callback    DiffNotifyCallback
-	repository  *Repository
-	errorTarget *error
+type diffNotifyData struct {
+	Callback DiffNotifyCallback
+	Diff     *Diff
+	Error    error
 }
 
-//export diffNotifyCallback
-func diffNotifyCallback(_diff_so_far unsafe.Pointer, delta_to_add *C.git_diff_delta, matched_pathspec *C.char, handle unsafe.Pointer) C.int {
+//export diffNotifyCb
+func diffNotifyCb(_diff_so_far unsafe.Pointer, delta_to_add *C.git_diff_delta, matched_pathspec *C.char, handle unsafe.Pointer) int {
 	diff_so_far := (*C.git_diff)(_diff_so_far)
 
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*diffNotifyCallbackData)
+	data, ok := payload.(*diffNotifyData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
 
-	if data == nil {
-		return C.int(ErrorCodeOK)
+	if data != nil {
+		if data.Diff == nil {
+			data.Diff = newDiffFromC(diff_so_far)
+		}
+
+		err := data.Callback(data.Diff, diffDeltaFromC(delta_to_add), C.GoString(matched_pathspec))
+
+		if err == ErrDeltaSkip {
+			return 1
+		} else if err != nil {
+			data.Error = err
+			return -1
+		} else {
+			return 0
+		}
 	}
-
-	// We are not taking ownership of this diff pointer, so no finalizer is set.
-	diff := &Diff{
-		ptr:          diff_so_far,
-		repo:         data.repository,
-		runFinalizer: false,
-	}
-
-	err := data.callback(diff, diffDeltaFromC(delta_to_add), C.GoString(matched_pathspec))
-
-	// Since the callback could theoretically keep a reference to the diff
-	// (which could be freed by libgit2 if an error occurs later during the
-	// diffing process), this converts a use-after-free (terrible!) into a nil
-	// dereference ("just" pretty bad).
-	diff.ptr = nil
-
-	if err == ErrDeltaSkip {
-		return 1
-	}
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
-func populateDiffOptions(copts *C.git_diff_options, opts *DiffOptions, repo *Repository, errorTarget *error) *C.git_diff_options {
-	C.git_diff_options_init(copts, C.GIT_DIFF_OPTIONS_VERSION)
-	if opts == nil {
-		return nil
-	}
-
-	copts.flags = C.uint32_t(opts.Flags)
-	copts.ignore_submodules = C.git_submodule_ignore_t(opts.IgnoreSubmodules)
-	if len(opts.Pathspec) > 0 {
-		copts.pathspec.count = C.size_t(len(opts.Pathspec))
-		copts.pathspec.strings = makeCStringsFromStrings(opts.Pathspec)
-	}
-	copts.context_lines = C.uint32_t(opts.ContextLines)
-	copts.interhunk_lines = C.uint32_t(opts.InterhunkLines)
-	copts.id_abbrev = C.uint16_t(opts.IdAbbrev)
-	copts.max_size = C.git_off_t(opts.MaxSize)
-	copts.old_prefix = C.CString(opts.OldPrefix)
-	copts.new_prefix = C.CString(opts.NewPrefix)
-
-	if opts.NotifyCallback != nil {
-		notifyData := &diffNotifyCallbackData{
-			callback:    opts.NotifyCallback,
-			repository:  repo,
-			errorTarget: errorTarget,
+func diffOptionsToC(opts *DiffOptions) (copts *C.git_diff_options, notifyData *diffNotifyData) {
+	cpathspec := C.git_strarray{}
+	if opts != nil {
+		notifyData = &diffNotifyData{
+			Callback: opts.NotifyCallback,
+		}
+
+		if opts.Pathspec != nil {
+			cpathspec.count = C.size_t(len(opts.Pathspec))
+			cpathspec.strings = makeCStringsFromStrings(opts.Pathspec)
+		}
+
+		copts = &C.git_diff_options{
+			version:           C.GIT_DIFF_OPTIONS_VERSION,
+			flags:             C.uint32_t(opts.Flags),
+			ignore_submodules: C.git_submodule_ignore_t(opts.IgnoreSubmodules),
+			pathspec:          cpathspec,
+			context_lines:     C.uint32_t(opts.ContextLines),
+			interhunk_lines:   C.uint32_t(opts.InterhunkLines),
+			id_abbrev:         C.uint16_t(opts.IdAbbrev),
+			max_size:          C.git_off_t(opts.MaxSize),
+			old_prefix:        C.CString(opts.OldPrefix),
+			new_prefix:        C.CString(opts.NewPrefix),
+		}
+
+		if opts.NotifyCallback != nil {
+			C._go_git_setup_diff_notify_callbacks(copts)
+			copts.payload = pointerHandles.Track(notifyData)
 		}
-		C._go_git_setup_diff_notify_callbacks(copts)
-		copts.payload = pointerHandles.Track(notifyData)
 	}
-	return copts
+	return
 }
 
 func freeDiffOptions(copts *C.git_diff_options) {
-	if copts == nil {
-		return
-	}
-	freeStrarray(&copts.pathspec)
-	C.free(unsafe.Pointer(copts.old_prefix))
-	C.free(unsafe.Pointer(copts.new_prefix))
-	if copts.payload != nil {
-		pointerHandles.Untrack(copts.payload)
+	if copts != nil {
+		cpathspec := copts.pathspec
+		freeStrarray(&cpathspec)
+		C.free(unsafe.Pointer(copts.old_prefix))
+		C.free(unsafe.Pointer(copts.new_prefix))
+		if copts.payload != nil {
+			pointerHandles.Untrack(copts.payload)
+		}
 	}
 }
 
@@ -698,23 +611,21 @@ func (v *Repository) DiffTreeToTree(oldTree, newTree *Tree, opts *DiffOptions) (
 		newPtr = newTree.cast_ptr
 	}
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, notifyData := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_diff_tree_to_tree(&diffPtr, v.ptr, oldPtr, newPtr, copts)
-	runtime.KeepAlive(oldTree)
-	runtime.KeepAlive(newTree)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
+	ecode := C.git_diff_tree_to_tree(&diffPtr, v.ptr, oldPtr, newPtr, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
+
+	if notifyData != nil && notifyData.Diff != nil {
+		return notifyData.Diff, nil
 	}
-	return newDiffFromC(diffPtr, v), nil
+	return newDiffFromC(diffPtr), nil
 }
 
 func (v *Repository) DiffTreeToWorkdir(oldTree *Tree, opts *DiffOptions) (*Diff, error) {
@@ -725,23 +636,21 @@ func (v *Repository) DiffTreeToWorkdir(oldTree *Tree, opts *DiffOptions) (*Diff,
 		oldPtr = oldTree.cast_ptr
 	}
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, notifyData := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_diff_tree_to_workdir(&diffPtr, v.ptr, oldPtr, copts)
-	runtime.KeepAlive(oldTree)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
+	ecode := C.git_diff_tree_to_workdir(&diffPtr, v.ptr, oldPtr, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
 
-	return newDiffFromC(diffPtr, v), nil
+	if notifyData != nil && notifyData.Diff != nil {
+		return notifyData.Diff, nil
+	}
+	return newDiffFromC(diffPtr), nil
 }
 
 func (v *Repository) DiffTreeToIndex(oldTree *Tree, index *Index, opts *DiffOptions) (*Diff, error) {
@@ -757,24 +666,21 @@ func (v *Repository) DiffTreeToIndex(oldTree *Tree, index *Index, opts *DiffOpti
 		indexPtr = index.ptr
 	}
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, notifyData := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_diff_tree_to_index(&diffPtr, v.ptr, oldPtr, indexPtr, copts)
-	runtime.KeepAlive(oldTree)
-	runtime.KeepAlive(index)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
+	ecode := C.git_diff_tree_to_index(&diffPtr, v.ptr, oldPtr, indexPtr, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
 
-	return newDiffFromC(diffPtr, v), nil
+	if notifyData != nil && notifyData.Diff != nil {
+		return notifyData.Diff, nil
+	}
+	return newDiffFromC(diffPtr), nil
 }
 
 func (v *Repository) DiffTreeToWorkdirWithIndex(oldTree *Tree, opts *DiffOptions) (*Diff, error) {
@@ -785,23 +691,21 @@ func (v *Repository) DiffTreeToWorkdirWithIndex(oldTree *Tree, opts *DiffOptions
 		oldPtr = oldTree.cast_ptr
 	}
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, notifyData := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_diff_tree_to_workdir_with_index(&diffPtr, v.ptr, oldPtr, copts)
-	runtime.KeepAlive(oldTree)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
+	ecode := C.git_diff_tree_to_workdir_with_index(&diffPtr, v.ptr, oldPtr, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
 
-	return newDiffFromC(diffPtr, v), nil
+	if notifyData != nil && notifyData.Diff != nil {
+		return notifyData.Diff, nil
+	}
+	return newDiffFromC(diffPtr), nil
 }
 
 func (v *Repository) DiffIndexToWorkdir(index *Index, opts *DiffOptions) (*Diff, error) {
@@ -812,32 +716,28 @@ func (v *Repository) DiffIndexToWorkdir(index *Index, opts *DiffOptions) (*Diff,
 		indexPtr = index.ptr
 	}
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, notifyData := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_diff_index_to_workdir(&diffPtr, v.ptr, indexPtr, copts)
-	runtime.KeepAlive(index)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
+	ecode := C.git_diff_index_to_workdir(&diffPtr, v.ptr, indexPtr, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
 
-	return newDiffFromC(diffPtr, v), nil
+	if notifyData != nil && notifyData.Diff != nil {
+		return notifyData.Diff, nil
+	}
+	return newDiffFromC(diffPtr), nil
 }
 
 // DiffBlobs performs a diff between two arbitrary blobs. You can pass
 // whatever file names you'd like for them to appear as in the diff.
 func DiffBlobs(oldBlob *Blob, oldAsPath string, newBlob *Blob, newAsPath string, opts *DiffOptions, fileCallback DiffForEachFileCallback, detail DiffDetail) error {
-	var err error
-	data := &diffForEachCallbackData{
-		fileCallback: fileCallback,
-		errorTarget:  &err,
+	data := &diffForEachData{
+		FileCallback: fileCallback,
 	}
 
 	intHunks := C.int(0)
@@ -853,15 +753,12 @@ func DiffBlobs(oldBlob *Blob, oldAsPath string, newBlob *Blob, newAsPath string,
 	handle := pointerHandles.Track(data)
 	defer pointerHandles.Untrack(handle)
 
-	var repo *Repository
 	var oldBlobPtr, newBlobPtr *C.git_blob
 	if oldBlob != nil {
 		oldBlobPtr = oldBlob.cast_ptr
-		repo = oldBlob.repo
 	}
 	if newBlob != nil {
 		newBlobPtr = newBlob.cast_ptr
-		repo = newBlob.repo
 	}
 
 	oldBlobPath := C.CString(oldAsPath)
@@ -869,235 +766,16 @@ func DiffBlobs(oldBlob *Blob, oldAsPath string, newBlob *Blob, newAsPath string,
 	newBlobPath := C.CString(newAsPath)
 	defer C.free(unsafe.Pointer(newBlobPath))
 
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, repo, &err)
+	copts, _ := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C._go_git_diff_blobs(oldBlobPtr, oldBlobPath, newBlobPtr, newBlobPath, copts, 1, intHunks, intLines, handle)
-	runtime.KeepAlive(oldBlob)
-	runtime.KeepAlive(newBlob)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
-// ApplyHunkCallback is a callback that will be made per delta (file) when applying a patch.
-type ApplyHunkCallback func(*DiffHunk) (apply bool, err error)
-
-// ApplyDeltaCallback is a callback that will be made per hunk when applying a patch.
-type ApplyDeltaCallback func(*DiffDelta) (apply bool, err error)
-
-// ApplyOptions has 2 callbacks that are called for hunks or deltas
-// If these functions return an error, abort the apply process immediately.
-// If the first return value is true, the delta/hunk will be applied. If it is false, the  delta/hunk will not be applied. In either case, the rest of the apply process will continue.
-type ApplyOptions struct {
-	ApplyHunkCallback  ApplyHunkCallback
-	ApplyDeltaCallback ApplyDeltaCallback
-	Flags              uint
-}
-
-type applyCallbackData struct {
-	options     *ApplyOptions
-	errorTarget *error
-}
-
-//export hunkApplyCallback
-func hunkApplyCallback(_hunk *C.git_diff_hunk, _payload unsafe.Pointer) C.int {
-	data, ok := pointerHandles.Get(_payload).(*applyCallbackData)
-	if !ok {
-		panic("invalid apply options payload")
-	}
-
-	if data.options.ApplyHunkCallback == nil {
-		return C.int(ErrorCodeOK)
-	}
-
-	hunk := diffHunkFromC(_hunk)
-
-	apply, err := data.options.ApplyHunkCallback(&hunk)
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-
-	if !apply {
-		return 1
-	}
-	return C.int(ErrorCodeOK)
-}
-
-//export deltaApplyCallback
-func deltaApplyCallback(_delta *C.git_diff_delta, _payload unsafe.Pointer) C.int {
-	data, ok := pointerHandles.Get(_payload).(*applyCallbackData)
-	if !ok {
-		panic("invalid apply options payload")
-	}
-
-	if data.options.ApplyDeltaCallback == nil {
-		return C.int(ErrorCodeOK)
-	}
-
-	delta := diffDeltaFromC(_delta)
-
-	apply, err := data.options.ApplyDeltaCallback(&delta)
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-
-	if !apply {
-		return 1
-	}
-	return C.int(ErrorCodeOK)
-}
-
-// DefaultApplyOptions returns default options for applying diffs or patches.
-func DefaultApplyOptions() (*ApplyOptions, error) {
-	opts := C.git_apply_options{}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_apply_options_init(&opts, C.GIT_APPLY_OPTIONS_VERSION)
-	if int(ecode) != 0 {
-		return nil, MakeGitError(ecode)
-	}
-
-	return applyOptionsFromC(&opts), nil
-}
-
-func populateApplyOptions(copts *C.git_apply_options, opts *ApplyOptions, errorTarget *error) *C.git_apply_options {
-	C.git_apply_options_init(copts, C.GIT_APPLY_OPTIONS_VERSION)
-	if opts == nil {
-		return nil
-	}
-
-	copts.flags = C.uint(opts.Flags)
-
-	if opts.ApplyDeltaCallback != nil || opts.ApplyHunkCallback != nil {
-		data := &applyCallbackData{
-			options:     opts,
-			errorTarget: errorTarget,
-		}
-		C._go_git_populate_apply_callbacks(copts)
-		copts.payload = pointerHandles.Track(data)
-	}
-
-	return copts
-}
-
-func freeApplyOptions(copts *C.git_apply_options) {
-	if copts == nil {
-		return
-	}
-	if copts.payload != nil {
-		pointerHandles.Untrack(copts.payload)
-	}
-}
-
-func applyOptionsFromC(copts *C.git_apply_options) *ApplyOptions {
-	return &ApplyOptions{
-		Flags: uint(copts.flags),
-	}
-}
-
-// ApplyLocation represents the possible application locations for applying
-// diffs.
-type ApplyLocation int
-
-const (
-	// ApplyLocationWorkdir applies the patch to the workdir, leaving the
-	// index untouched. This is the equivalent of `git apply` with no location
-	// argument.
-	ApplyLocationWorkdir ApplyLocation = C.GIT_APPLY_LOCATION_WORKDIR
-	// ApplyLocationIndex applies the patch to the index, leaving the working
-	// directory untouched. This is the equivalent of `git apply --cached`.
-	ApplyLocationIndex ApplyLocation = C.GIT_APPLY_LOCATION_INDEX
-	// ApplyLocationBoth applies the patch to both the working directory and
-	// the index. This is the equivalent of `git apply --index`.
-	ApplyLocationBoth ApplyLocation = C.GIT_APPLY_LOCATION_BOTH
-)
-
-// ApplyDiff appllies a Diff to the given repository, making changes directly
-// in the working directory, the index, or both.
-func (v *Repository) ApplyDiff(diff *Diff, location ApplyLocation, opts *ApplyOptions) error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var err error
-	cOpts := populateApplyOptions(&C.git_apply_options{}, opts, &err)
-	defer freeApplyOptions(cOpts)
-
-	ret := C.git_apply(v.ptr, diff.ptr, C.git_apply_location_t(location), cOpts)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(diff)
-	runtime.KeepAlive(cOpts)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
-// ApplyToTree applies a Diff to a Tree and returns the resulting image as an Index.
-func (v *Repository) ApplyToTree(diff *Diff, tree *Tree, opts *ApplyOptions) (*Index, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var err error
-	cOpts := populateApplyOptions(&C.git_apply_options{}, opts, &err)
-	defer freeApplyOptions(cOpts)
-
-	var indexPtr *C.git_index
-	ret := C.git_apply_to_tree(&indexPtr, v.ptr, tree.cast_ptr, diff.ptr, cOpts)
-	runtime.KeepAlive(diff)
-	runtime.KeepAlive(tree)
-	runtime.KeepAlive(cOpts)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
-	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return newIndexFromC(indexPtr, v), nil
-}
-
-// DiffFromBuffer reads the contents of a git patch file into a Diff object.
-//
-// The diff object produced is similar to the one that would be produced if you
-// actually produced it computationally by comparing two trees, however there
-// may be subtle differences. For example, a patch file likely contains
-// abbreviated object IDs, so the object IDs in a git_diff_delta produced by
-// this function will also be abbreviated.
-//
-// This function will only read patch files created by a git implementation, it
-// will not read unified diffs produced by the diff program, nor any other
-// types of patch files.
-func DiffFromBuffer(buffer []byte, repo *Repository) (*Diff, error) {
-	var diff *C.git_diff
-
-	cBuffer := C.CBytes(buffer)
-	defer C.free(unsafe.Pointer(cBuffer))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_diff_from_buffer(&diff, (*C.char)(cBuffer), C.size_t(len(buffer)))
+	ecode := C._go_git_diff_blobs(oldBlobPtr, oldBlobPath, newBlobPtr, newBlobPath, copts, 1, intHunks, intLines, handle)
 	if ecode < 0 {
-		return nil, MakeGitError(ecode)
+		return MakeGitError(ecode)
 	}
-	runtime.KeepAlive(diff)
 
-	return newDiffFromC(diff, repo), nil
+	return nil
 }

diff_test.go

@@ -2,10 +2,6 @@ package git
 
 import (
 	"errors"
-	"fmt"
-	"io/ioutil"
-	"path"
-	"reflect"
 	"strings"
 	"testing"
 )
@@ -173,8 +169,9 @@ func TestDiffTreeToTree(t *testing.T) {
 	}, DiffDetailLines)
 
 	if err != errTest {
-		t.Fatalf("Expected custom error to be returned, got %v, want %v", err, errTest)
+		t.Fatal("Expected custom error to be returned")
 	}
+
 }
 
 func createTestTrees(t *testing.T, repo *Repository) (originalTree *Tree, newTree *Tree) {
@@ -239,447 +236,3 @@ func TestDiffBlobs(t *testing.T) {
 		t.Fatalf("Bad number of lines iterated")
 	}
 }
-
-func TestApplyDiffAddfile(t *testing.T) {
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-
-	addFirstFileCommit, addFirstFileTree := addAndGetTree(t, repo, "file1", `hello`)
-	defer addFirstFileCommit.Free()
-	defer addFirstFileTree.Free()
-	addSecondFileCommit, addSecondFileTree := addAndGetTree(t, repo, "file2", `hello2`)
-	defer addSecondFileCommit.Free()
-	defer addSecondFileTree.Free()
-
-	diff, err := repo.DiffTreeToTree(addFirstFileTree, addSecondFileTree, nil)
-	checkFatal(t, err)
-	defer diff.Free()
-
-	t.Run("check does not apply to current tree because file exists", func(t *testing.T) {
-		err = repo.ResetToCommit(addSecondFileCommit, ResetHard, &CheckoutOptions{})
-		checkFatal(t, err)
-
-		err = repo.ApplyDiff(diff, ApplyLocationBoth, nil)
-		if err == nil {
-			t.Error("expecting applying patch to current repo to fail")
-		}
-	})
-
-	t.Run("check apply to correct commit", func(t *testing.T) {
-		err = repo.ResetToCommit(addFirstFileCommit, ResetHard, &CheckoutOptions{})
-		checkFatal(t, err)
-
-		err = repo.ApplyDiff(diff, ApplyLocationBoth, nil)
-		checkFatal(t, err)
-
-		t.Run("Check that diff only changed one file", func(t *testing.T) {
-			checkSecondFileStaged(t, repo)
-
-			index, err := repo.Index()
-			checkFatal(t, err)
-			defer index.Free()
-
-			newTreeOID, err := index.WriteTreeTo(repo)
-			checkFatal(t, err)
-
-			newTree, err := repo.LookupTree(newTreeOID)
-			checkFatal(t, err)
-			defer newTree.Free()
-
-			_, err = repo.CreateCommit("HEAD", signature(), signature(), fmt.Sprintf("patch apply"), newTree, addFirstFileCommit)
-			checkFatal(t, err)
-		})
-
-		t.Run("test applying patch produced the same diff", func(t *testing.T) {
-			head, err := repo.Head()
-			checkFatal(t, err)
-
-			commit, err := repo.LookupCommit(head.Target())
-			checkFatal(t, err)
-			defer commit.Free()
-
-			tree, err := commit.Tree()
-			checkFatal(t, err)
-			defer tree.Free()
-
-			newDiff, err := repo.DiffTreeToTree(addFirstFileTree, tree, nil)
-			checkFatal(t, err)
-			defer newDiff.Free()
-
-			raw1b, err := diff.ToBuf(DiffFormatPatch)
-			checkFatal(t, err)
-			raw2b, err := newDiff.ToBuf(DiffFormatPatch)
-			checkFatal(t, err)
-
-			raw1 := string(raw1b)
-			raw2 := string(raw2b)
-
-			if raw1 != raw2 {
-				t.Error("diffs should be the same")
-			}
-		})
-	})
-
-	t.Run("check convert to raw buffer and apply", func(t *testing.T) {
-		err = repo.ResetToCommit(addFirstFileCommit, ResetHard, &CheckoutOptions{})
-		checkFatal(t, err)
-
-		raw, err := diff.ToBuf(DiffFormatPatch)
-		checkFatal(t, err)
-
-		if len(raw) == 0 {
-			t.Error("empty diff created")
-		}
-
-		diff2, err := DiffFromBuffer(raw, repo)
-		checkFatal(t, err)
-		defer diff2.Free()
-
-		err = repo.ApplyDiff(diff2, ApplyLocationBoth, nil)
-		checkFatal(t, err)
-	})
-
-	t.Run("check apply callbacks work", func(t *testing.T) {
-		// reset the state and get new default options for test
-		resetAndGetOpts := func(t *testing.T) *ApplyOptions {
-			err = repo.ResetToCommit(addFirstFileCommit, ResetHard, &CheckoutOptions{})
-			checkFatal(t, err)
-
-			opts, err := DefaultApplyOptions()
-			checkFatal(t, err)
-
-			return opts
-		}
-
-		t.Run("Check hunk callback working applies patch", func(t *testing.T) {
-			opts := resetAndGetOpts(t)
-
-			called := false
-			opts.ApplyHunkCallback = func(hunk *DiffHunk) (apply bool, err error) {
-				called = true
-				return true, nil
-			}
-
-			err = repo.ApplyDiff(diff, ApplyLocationBoth, opts)
-			checkFatal(t, err)
-
-			if called == false {
-				t.Error("apply hunk callback was not called")
-			}
-
-			checkSecondFileStaged(t, repo)
-		})
-
-		t.Run("Check delta callback working applies patch", func(t *testing.T) {
-			opts := resetAndGetOpts(t)
-
-			called := false
-			opts.ApplyDeltaCallback = func(hunk *DiffDelta) (apply bool, err error) {
-				if hunk.NewFile.Path != "file2" {
-					t.Error("Unexpected delta in diff application")
-				}
-				called = true
-				return true, nil
-			}
-
-			err = repo.ApplyDiff(diff, ApplyLocationBoth, opts)
-			checkFatal(t, err)
-
-			if called == false {
-				t.Error("apply hunk callback was not called")
-			}
-
-			checkSecondFileStaged(t, repo)
-		})
-
-		t.Run("Check delta callback returning false does not apply patch", func(t *testing.T) {
-			opts := resetAndGetOpts(t)
-
-			called := false
-			opts.ApplyDeltaCallback = func(hunk *DiffDelta) (apply bool, err error) {
-				if hunk.NewFile.Path != "file2" {
-					t.Error("Unexpected hunk in diff application")
-				}
-				called = true
-				return false, nil
-			}
-
-			err = repo.ApplyDiff(diff, ApplyLocationBoth, opts)
-			checkFatal(t, err)
-
-			if called == false {
-				t.Error("apply hunk callback was not called")
-			}
-
-			checkNoFilesStaged(t, repo)
-		})
-
-		t.Run("Check hunk callback returning causes application to fail", func(t *testing.T) {
-			opts := resetAndGetOpts(t)
-
-			called := false
-			opts.ApplyHunkCallback = func(hunk *DiffHunk) (apply bool, err error) {
-				called = true
-				return false, errors.New("something happened")
-			}
-
-			err = repo.ApplyDiff(diff, ApplyLocationBoth, opts)
-			if err == nil {
-				t.Error("expected an error after trying to apply")
-			}
-
-			if called == false {
-				t.Error("apply hunk callback was not called")
-			}
-
-			checkNoFilesStaged(t, repo)
-		})
-
-		t.Run("Check delta callback returning causes application to fail", func(t *testing.T) {
-			opts := resetAndGetOpts(t)
-
-			called := false
-			opts.ApplyDeltaCallback = func(hunk *DiffDelta) (apply bool, err error) {
-				if hunk.NewFile.Path != "file2" {
-					t.Error("Unexpected delta in diff application")
-				}
-				called = true
-				return false, errors.New("something happened")
-			}
-
-			err = repo.ApplyDiff(diff, ApplyLocationBoth, opts)
-			if err == nil {
-				t.Error("expected an error after trying to apply")
-			}
-
-			if called == false {
-				t.Error("apply hunk callback was not called")
-			}
-
-			checkNoFilesStaged(t, repo)
-		})
-	})
-}
-
-func TestApplyToTree(t *testing.T) {
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-
-	commitA, treeA := addAndGetTree(t, repo, "file", "a")
-	defer commitA.Free()
-	defer treeA.Free()
-	commitB, treeB := addAndGetTree(t, repo, "file", "b")
-	defer commitB.Free()
-	defer treeB.Free()
-	commitC, treeC := addAndGetTree(t, repo, "file", "c")
-	defer commitC.Free()
-	defer treeC.Free()
-
-	diffAB, err := repo.DiffTreeToTree(treeA, treeB, nil)
-	checkFatal(t, err)
-
-	diffAC, err := repo.DiffTreeToTree(treeA, treeC, nil)
-	checkFatal(t, err)
-
-	errMessageDropped := errors.New("message dropped")
-
-	for _, tc := range []struct {
-		name               string
-		tree               *Tree
-		diff               *Diff
-		applyHunkCallback  ApplyHunkCallback
-		applyDeltaCallback ApplyDeltaCallback
-		err                error
-		expectedDiff       *Diff
-	}{
-		{
-			name:         "applying patch produces the same diff",
-			tree:         treeA,
-			diff:         diffAB,
-			expectedDiff: diffAB,
-		},
-		{
-			name: "applying a conflicting patch errors",
-			tree: treeB,
-			diff: diffAC,
-			err: &GitError{
-				Message: "hunk at line 1 did not apply",
-				Code:    ErrorCodeApplyFail,
-				Class:   ErrorClassPatch,
-			},
-		},
-		{
-			name:               "callbacks succeeding apply the diff",
-			tree:               treeA,
-			diff:               diffAB,
-			applyHunkCallback:  func(*DiffHunk) (bool, error) { return true, nil },
-			applyDeltaCallback: func(*DiffDelta) (bool, error) { return true, nil },
-			expectedDiff:       diffAB,
-		},
-		{
-			name:              "hunk callback returning false does not apply",
-			tree:              treeA,
-			diff:              diffAB,
-			applyHunkCallback: func(*DiffHunk) (bool, error) { return false, nil },
-		},
-		{
-			name:              "hunk callback erroring fails the call",
-			tree:              treeA,
-			diff:              diffAB,
-			applyHunkCallback: func(*DiffHunk) (bool, error) { return true, errMessageDropped },
-			err:               errMessageDropped,
-		},
-		{
-			name:               "delta callback returning false does not apply",
-			tree:               treeA,
-			diff:               diffAB,
-			applyDeltaCallback: func(*DiffDelta) (bool, error) { return false, nil },
-		},
-		{
-			name:               "delta callback erroring fails the call",
-			tree:               treeA,
-			diff:               diffAB,
-			applyDeltaCallback: func(*DiffDelta) (bool, error) { return true, errMessageDropped },
-			err:                errMessageDropped,
-		},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			opts, err := DefaultApplyOptions()
-			checkFatal(t, err)
-
-			opts.ApplyHunkCallback = tc.applyHunkCallback
-			opts.ApplyDeltaCallback = tc.applyDeltaCallback
-
-			index, err := repo.ApplyToTree(tc.diff, tc.tree, opts)
-			if tc.err != nil {
-				if !reflect.DeepEqual(tc.err, err) {
-					t.Fatalf("expected error %q but got %q", tc.err, err)
-				}
-
-				return
-			}
-			checkFatal(t, err)
-
-			patchedTreeOID, err := index.WriteTreeTo(repo)
-			checkFatal(t, err)
-
-			patchedTree, err := repo.LookupTree(patchedTreeOID)
-			checkFatal(t, err)
-
-			patchedDiff, err := repo.DiffTreeToTree(tc.tree, patchedTree, nil)
-			checkFatal(t, err)
-
-			appliedRaw, err := patchedDiff.ToBuf(DiffFormatPatch)
-			checkFatal(t, err)
-
-			if tc.expectedDiff == nil {
-				if len(appliedRaw) > 0 {
-					t.Fatalf("expected no diff but got: %s", appliedRaw)
-				}
-
-				return
-			}
-
-			expectedDiff, err := tc.expectedDiff.ToBuf(DiffFormatPatch)
-			checkFatal(t, err)
-
-			if string(expectedDiff) != string(appliedRaw) {
-				t.Fatalf("diffs do not match:\nexpected: %s\n\nactual: %s", expectedDiff, appliedRaw)
-			}
-		})
-	}
-}
-
-// checkSecondFileStaged checks that there is a single file called "file2" uncommitted in the repo
-func checkSecondFileStaged(t *testing.T, repo *Repository) {
-	opts := StatusOptions{
-		Show:  StatusShowIndexAndWorkdir,
-		Flags: StatusOptIncludeUntracked,
-	}
-
-	statuses, err := repo.StatusList(&opts)
-	checkFatal(t, err)
-
-	count, err := statuses.EntryCount()
-	checkFatal(t, err)
-
-	if count != 1 {
-		t.Error("diff should affect exactly one file")
-	}
-	if count == 0 {
-		t.Fatal("no statuses, cannot continue test")
-	}
-
-	entry, err := statuses.ByIndex(0)
-	checkFatal(t, err)
-
-	if entry.Status != StatusIndexNew {
-		t.Error("status should be 'new' as file has been added between commits")
-	}
-
-	if entry.HeadToIndex.NewFile.Path != "file2" {
-		t.Error("new file should be 'file2")
-	}
-	return
-}
-
-// checkNoFilesStaged checks that there is a single file called "file2" uncommitted in the repo
-func checkNoFilesStaged(t *testing.T, repo *Repository) {
-	opts := StatusOptions{
-		Show:  StatusShowIndexAndWorkdir,
-		Flags: StatusOptIncludeUntracked,
-	}
-
-	statuses, err := repo.StatusList(&opts)
-	checkFatal(t, err)
-
-	count, err := statuses.EntryCount()
-	checkFatal(t, err)
-
-	if count != 0 {
-		t.Error("files changed unexpectedly")
-	}
-}
-
-// addAndGetTree creates a file and commits it, returning the commit and tree
-func addAndGetTree(t *testing.T, repo *Repository, filename string, content string) (*Commit, *Tree) {
-	headCommit, err := headCommit(repo)
-	checkFatal(t, err)
-	defer headCommit.Free()
-
-	p := repo.Path()
-	p = strings.TrimSuffix(p, ".git")
-	p = strings.TrimSuffix(p, ".git/")
-
-	err = ioutil.WriteFile(path.Join(p, filename), []byte((content)), 0777)
-	checkFatal(t, err)
-
-	index, err := repo.Index()
-	checkFatal(t, err)
-	defer index.Free()
-
-	err = index.AddByPath(filename)
-	checkFatal(t, err)
-
-	newTreeOID, err := index.WriteTreeTo(repo)
-	checkFatal(t, err)
-
-	newTree, err := repo.LookupTree(newTreeOID)
-	checkFatal(t, err)
-	defer newTree.Free()
-
-	commitId, err := repo.CreateCommit("HEAD", signature(), signature(), fmt.Sprintf("add %s", filename), newTree, headCommit)
-	checkFatal(t, err)
-
-	commit, err := repo.LookupCommit(commitId)
-	checkFatal(t, err)
-
-	tree, err := commit.Tree()
-	checkFatal(t, err)
-
-	return commit, tree
-}

difflinetype_string.go

@@ -1,56 +0,0 @@
-// Code generated by "stringer -type DiffLineType -trimprefix DiffLine -tags static"; DO NOT EDIT.
-
-package git
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[DiffLineContext-32]
-	_ = x[DiffLineAddition-43]
-	_ = x[DiffLineDeletion-45]
-	_ = x[DiffLineContextEOFNL-61]
-	_ = x[DiffLineAddEOFNL-62]
-	_ = x[DiffLineDelEOFNL-60]
-	_ = x[DiffLineFileHdr-70]
-	_ = x[DiffLineHunkHdr-72]
-	_ = x[DiffLineBinary-66]
-}
-
-const (
-	_DiffLineType_name_0 = "Context"
-	_DiffLineType_name_1 = "Addition"
-	_DiffLineType_name_2 = "Deletion"
-	_DiffLineType_name_3 = "DelEOFNLContextEOFNLAddEOFNL"
-	_DiffLineType_name_4 = "Binary"
-	_DiffLineType_name_5 = "FileHdr"
-	_DiffLineType_name_6 = "HunkHdr"
-)
-
-var (
-	_DiffLineType_index_3 = [...]uint8{0, 8, 20, 28}
-)
-
-func (i DiffLineType) String() string {
-	switch {
-	case i == 32:
-		return _DiffLineType_name_0
-	case i == 43:
-		return _DiffLineType_name_1
-	case i == 45:
-		return _DiffLineType_name_2
-	case 60 <= i && i <= 62:
-		i -= 60
-		return _DiffLineType_name_3[_DiffLineType_index_3[i]:_DiffLineType_index_3[i+1]]
-	case i == 66:
-		return _DiffLineType_name_4
-	case i == 70:
-		return _DiffLineType_name_5
-	case i == 72:
-		return _DiffLineType_name_6
-	default:
-		return "DiffLineType(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}

errorclass_string.go

@@ -1,63 +0,0 @@
-// Code generated by "stringer -type ErrorClass -trimprefix ErrorClass -tags static"; DO NOT EDIT.
-
-package git
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[ErrorClassNone-0]
-	_ = x[ErrorClassNoMemory-1]
-	_ = x[ErrorClassOS-2]
-	_ = x[ErrorClassInvalid-3]
-	_ = x[ErrorClassReference-4]
-	_ = x[ErrorClassZlib-5]
-	_ = x[ErrorClassRepository-6]
-	_ = x[ErrorClassConfig-7]
-	_ = x[ErrorClassRegex-8]
-	_ = x[ErrorClassOdb-9]
-	_ = x[ErrorClassIndex-10]
-	_ = x[ErrorClassObject-11]
-	_ = x[ErrorClassNet-12]
-	_ = x[ErrorClassTag-13]
-	_ = x[ErrorClassTree-14]
-	_ = x[ErrorClassIndexer-15]
-	_ = x[ErrorClassSSL-16]
-	_ = x[ErrorClassSubmodule-17]
-	_ = x[ErrorClassThread-18]
-	_ = x[ErrorClassStash-19]
-	_ = x[ErrorClassCheckout-20]
-	_ = x[ErrorClassFetchHead-21]
-	_ = x[ErrorClassMerge-22]
-	_ = x[ErrorClassSSH-23]
-	_ = x[ErrorClassFilter-24]
-	_ = x[ErrorClassRevert-25]
-	_ = x[ErrorClassCallback-26]
-	_ = x[ErrorClassRebase-29]
-	_ = x[ErrorClassPatch-31]
-}
-
-const (
-	_ErrorClass_name_0 = "NoneNoMemoryOSInvalidReferenceZlibRepositoryConfigRegexOdbIndexObjectNetTagTreeIndexerSSLSubmoduleThreadStashCheckoutFetchHeadMergeSSHFilterRevertCallback"
-	_ErrorClass_name_1 = "Rebase"
-	_ErrorClass_name_2 = "Patch"
-)
-
-var (
-	_ErrorClass_index_0 = [...]uint8{0, 4, 12, 14, 21, 30, 34, 44, 50, 55, 58, 63, 69, 72, 75, 79, 86, 89, 98, 104, 109, 117, 126, 131, 134, 140, 146, 154}
-)
-
-func (i ErrorClass) String() string {
-	switch {
-	case 0 <= i && i <= 26:
-		return _ErrorClass_name_0[_ErrorClass_index_0[i]:_ErrorClass_index_0[i+1]]
-	case i == 29:
-		return _ErrorClass_name_1
-	case i == 31:
-		return _ErrorClass_name_2
-	default:
-		return "ErrorClass(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}

errorcode_string.go

@@ -1,69 +0,0 @@
-// Code generated by "stringer -type ErrorCode -trimprefix ErrorCode -tags static"; DO NOT EDIT.
-
-package git
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[ErrorCodeOK-0]
-	_ = x[ErrorCodeGeneric - -1]
-	_ = x[ErrorCodeNotFound - -3]
-	_ = x[ErrorCodeExists - -4]
-	_ = x[ErrorCodeAmbiguous - -5]
-	_ = x[ErrorCodeBuffs - -6]
-	_ = x[ErrorCodeUser - -7]
-	_ = x[ErrorCodeBareRepo - -8]
-	_ = x[ErrorCodeUnbornBranch - -9]
-	_ = x[ErrorCodeUnmerged - -10]
-	_ = x[ErrorCodeNonFastForward - -11]
-	_ = x[ErrorCodeInvalidSpec - -12]
-	_ = x[ErrorCodeConflict - -13]
-	_ = x[ErrorCodeLocked - -14]
-	_ = x[ErrorCodeModified - -15]
-	_ = x[ErrorCodeAuth - -16]
-	_ = x[ErrorCodeCertificate - -17]
-	_ = x[ErrorCodeApplied - -18]
-	_ = x[ErrorCodePeel - -19]
-	_ = x[ErrorCodeEOF - -20]
-	_ = x[ErrorCodeInvalid - -21]
-	_ = x[ErrorCodeUncommitted - -22]
-	_ = x[ErrorCodeDirectory - -23]
-	_ = x[ErrorCodeMergeConflict - -24]
-	_ = x[ErrorCodePassthrough - -30]
-	_ = x[ErrorCodeIterOver - -31]
-	_ = x[ErrorCodeRetry - -32]
-	_ = x[ErrorCodeMismatch - -33]
-	_ = x[ErrorCodeIndexDirty - -34]
-	_ = x[ErrorCodeApplyFail - -35]
-}
-
-const (
-	_ErrorCode_name_0 = "ApplyFailIndexDirtyMismatchRetryIterOverPassthrough"
-	_ErrorCode_name_1 = "MergeConflictDirectoryUncommittedInvalidEOFPeelAppliedCertificateAuthModifiedLockedConflictInvalidSpecNonFastForwardUnmergedUnbornBranchBareRepoUserBuffsAmbiguousExistsNotFound"
-	_ErrorCode_name_2 = "GenericOK"
-)
-
-var (
-	_ErrorCode_index_0 = [...]uint8{0, 9, 19, 27, 32, 40, 51}
-	_ErrorCode_index_1 = [...]uint8{0, 13, 22, 33, 40, 43, 47, 54, 65, 69, 77, 83, 91, 102, 116, 124, 136, 144, 148, 153, 162, 168, 176}
-	_ErrorCode_index_2 = [...]uint8{0, 7, 9}
-)
-
-func (i ErrorCode) String() string {
-	switch {
-	case -35 <= i && i <= -30:
-		i -= -35
-		return _ErrorCode_name_0[_ErrorCode_index_0[i]:_ErrorCode_index_0[i+1]]
-	case -24 <= i && i <= -3:
-		i -= -24
-		return _ErrorCode_name_1[_ErrorCode_index_1[i]:_ErrorCode_index_1[i+1]]
-	case -1 <= i && i <= 0:
-		i -= -1
-		return _ErrorCode_name_2[_ErrorCode_index_2[i]:_ErrorCode_index_2[i+1]]
-	default:
-		return "ErrorCode(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}

features.go

@@ -12,10 +12,10 @@ const (
 	FeatureThreads Feature = C.GIT_FEATURE_THREADS
 
 	// libgit2 was built with HTTPS support built-in
-	FeatureHTTPS Feature = C.GIT_FEATURE_HTTPS
+	FeatureHttps Feature = C.GIT_FEATURE_HTTPS
 
 	// libgit2 was build with SSH support built-in
-	FeatureSSH Feature = C.GIT_FEATURE_SSH
+	FeatureSsh Feature = C.GIT_FEATURE_SSH
 
 	// libgit2 was built with nanosecond support for files
 	FeatureNSec Feature = C.GIT_FEATURE_NSEC

git.go

@@ -14,183 +14,131 @@ import (
 	"unsafe"
 )
 
-//go:generate stringer -type ErrorClass -trimprefix ErrorClass -tags static
 type ErrorClass int
 
 const (
-	ErrorClassNone       ErrorClass = C.GIT_ERROR_NONE
-	ErrorClassNoMemory   ErrorClass = C.GIT_ERROR_NOMEMORY
-	ErrorClassOS         ErrorClass = C.GIT_ERROR_OS
-	ErrorClassInvalid    ErrorClass = C.GIT_ERROR_INVALID
-	ErrorClassReference  ErrorClass = C.GIT_ERROR_REFERENCE
-	ErrorClassZlib       ErrorClass = C.GIT_ERROR_ZLIB
-	ErrorClassRepository ErrorClass = C.GIT_ERROR_REPOSITORY
-	ErrorClassConfig     ErrorClass = C.GIT_ERROR_CONFIG
-	ErrorClassRegex      ErrorClass = C.GIT_ERROR_REGEX
-	ErrorClassOdb        ErrorClass = C.GIT_ERROR_ODB
-	ErrorClassIndex      ErrorClass = C.GIT_ERROR_INDEX
-	ErrorClassObject     ErrorClass = C.GIT_ERROR_OBJECT
-	ErrorClassNet        ErrorClass = C.GIT_ERROR_NET
-	ErrorClassTag        ErrorClass = C.GIT_ERROR_TAG
-	ErrorClassTree       ErrorClass = C.GIT_ERROR_TREE
-	ErrorClassIndexer    ErrorClass = C.GIT_ERROR_INDEXER
-	ErrorClassSSL        ErrorClass = C.GIT_ERROR_SSL
-	ErrorClassSubmodule  ErrorClass = C.GIT_ERROR_SUBMODULE
-	ErrorClassThread     ErrorClass = C.GIT_ERROR_THREAD
-	ErrorClassStash      ErrorClass = C.GIT_ERROR_STASH
-	ErrorClassCheckout   ErrorClass = C.GIT_ERROR_CHECKOUT
-	ErrorClassFetchHead  ErrorClass = C.GIT_ERROR_FETCHHEAD
-	ErrorClassMerge      ErrorClass = C.GIT_ERROR_MERGE
-	ErrorClassSSH        ErrorClass = C.GIT_ERROR_SSH
-	ErrorClassFilter     ErrorClass = C.GIT_ERROR_FILTER
-	ErrorClassRevert     ErrorClass = C.GIT_ERROR_REVERT
-	ErrorClassCallback   ErrorClass = C.GIT_ERROR_CALLBACK
-	ErrorClassRebase     ErrorClass = C.GIT_ERROR_REBASE
-	ErrorClassPatch      ErrorClass = C.GIT_ERROR_PATCH
+	ErrClassNone       ErrorClass = C.GITERR_NONE
+	ErrClassNoMemory   ErrorClass = C.GITERR_NOMEMORY
+	ErrClassOs         ErrorClass = C.GITERR_OS
+	ErrClassInvalid    ErrorClass = C.GITERR_INVALID
+	ErrClassReference  ErrorClass = C.GITERR_REFERENCE
+	ErrClassZlib       ErrorClass = C.GITERR_ZLIB
+	ErrClassRepository ErrorClass = C.GITERR_REPOSITORY
+	ErrClassConfig     ErrorClass = C.GITERR_CONFIG
+	ErrClassRegex      ErrorClass = C.GITERR_REGEX
+	ErrClassOdb        ErrorClass = C.GITERR_ODB
+	ErrClassIndex      ErrorClass = C.GITERR_INDEX
+	ErrClassObject     ErrorClass = C.GITERR_OBJECT
+	ErrClassNet        ErrorClass = C.GITERR_NET
+	ErrClassTag        ErrorClass = C.GITERR_TAG
+	ErrClassTree       ErrorClass = C.GITERR_TREE
+	ErrClassIndexer    ErrorClass = C.GITERR_INDEXER
+	ErrClassSSL        ErrorClass = C.GITERR_SSL
+	ErrClassSubmodule  ErrorClass = C.GITERR_SUBMODULE
+	ErrClassThread     ErrorClass = C.GITERR_THREAD
+	ErrClassStash      ErrorClass = C.GITERR_STASH
+	ErrClassCheckout   ErrorClass = C.GITERR_CHECKOUT
+	ErrClassFetchHead  ErrorClass = C.GITERR_FETCHHEAD
+	ErrClassMerge      ErrorClass = C.GITERR_MERGE
+	ErrClassSsh        ErrorClass = C.GITERR_SSH
+	ErrClassFilter     ErrorClass = C.GITERR_FILTER
+	ErrClassRevert     ErrorClass = C.GITERR_REVERT
+	ErrClassCallback   ErrorClass = C.GITERR_CALLBACK
+	ErrClassRebase     ErrorClass = C.GITERR_REBASE
 )
 
-//go:generate stringer -type ErrorCode -trimprefix ErrorCode -tags static
 type ErrorCode int
 
 const (
-	// ErrorCodeOK indicates that the operation completed successfully.
-	ErrorCodeOK ErrorCode = C.GIT_OK
 
-	// ErrorCodeGeneric represents a generic error.
-	ErrorCodeGeneric ErrorCode = C.GIT_ERROR
-	// ErrorCodeNotFound represents that the requested object could not be found
-	ErrorCodeNotFound ErrorCode = C.GIT_ENOTFOUND
-	// ErrorCodeExists represents that the object exists preventing operation.
-	ErrorCodeExists ErrorCode = C.GIT_EEXISTS
-	// ErrorCodeAmbiguous represents that more than one object matches.
-	ErrorCodeAmbiguous ErrorCode = C.GIT_EAMBIGUOUS
-	// ErrorCodeBuffs represents that the output buffer is too short to hold data.
-	ErrorCodeBuffs ErrorCode = C.GIT_EBUFS
+	// No error
+	ErrOk ErrorCode = C.GIT_OK
 
-	// ErrorCodeUser is a special error that is never generated by libgit2
+	// Generic error
+	ErrGeneric ErrorCode = C.GIT_ERROR
+	// Requested object could not be found
+	ErrNotFound ErrorCode = C.GIT_ENOTFOUND
+	// Object exists preventing operation
+	ErrExists ErrorCode = C.GIT_EEXISTS
+	// More than one object matches
+	ErrAmbigious ErrorCode = C.GIT_EAMBIGUOUS
+	// Output buffer too short to hold data
+	ErrBuffs ErrorCode = C.GIT_EBUFS
+
+	// GIT_EUSER is a special error that is never generated by libgit2
 	// code.  You can return it from a callback (e.g to stop an iteration)
 	// to know that it was generated by the callback and not by libgit2.
-	ErrorCodeUser ErrorCode = C.GIT_EUSER
+	ErrUser ErrorCode = C.GIT_EUSER
 
-	// ErrorCodeBareRepo represents that the operation not allowed on bare repository
-	ErrorCodeBareRepo ErrorCode = C.GIT_EBAREREPO
-	// ErrorCodeUnbornBranch represents that HEAD refers to branch with no commits.
-	ErrorCodeUnbornBranch ErrorCode = C.GIT_EUNBORNBRANCH
-	// ErrorCodeUnmerged represents that a merge in progress prevented operation.
-	ErrorCodeUnmerged ErrorCode = C.GIT_EUNMERGED
-	// ErrorCodeNonFastForward represents that the reference was not fast-forwardable.
-	ErrorCodeNonFastForward ErrorCode = C.GIT_ENONFASTFORWARD
-	// ErrorCodeInvalidSpec represents that the name/ref spec was not in a valid format.
-	ErrorCodeInvalidSpec ErrorCode = C.GIT_EINVALIDSPEC
-	// ErrorCodeConflict represents that checkout conflicts prevented operation.
-	ErrorCodeConflict ErrorCode = C.GIT_ECONFLICT
-	// ErrorCodeLocked represents that lock file prevented operation.
-	ErrorCodeLocked ErrorCode = C.GIT_ELOCKED
-	// ErrorCodeModified represents that the reference value does not match expected.
-	ErrorCodeModified ErrorCode = C.GIT_EMODIFIED
-	// ErrorCodeAuth represents that the authentication failed.
-	ErrorCodeAuth ErrorCode = C.GIT_EAUTH
-	// ErrorCodeCertificate represents that the server certificate is invalid.
-	ErrorCodeCertificate ErrorCode = C.GIT_ECERTIFICATE
-	// ErrorCodeApplied represents that the patch/merge has already been applied.
-	ErrorCodeApplied ErrorCode = C.GIT_EAPPLIED
-	// ErrorCodePeel represents that the requested peel operation is not possible.
-	ErrorCodePeel ErrorCode = C.GIT_EPEEL
-	// ErrorCodeEOF represents an unexpected EOF.
-	ErrorCodeEOF ErrorCode = C.GIT_EEOF
-	// ErrorCodeInvalid represents an invalid operation or input.
-	ErrorCodeInvalid ErrorCode = C.GIT_EINVALID
-	// ErrorCodeUIncommitted represents that uncommitted changes in index prevented operation.
-	ErrorCodeUncommitted ErrorCode = C.GIT_EUNCOMMITTED
-	// ErrorCodeDirectory represents that the operation is not valid for a directory.
-	ErrorCodeDirectory ErrorCode = C.GIT_EDIRECTORY
-	// ErrorCodeMergeConflict represents that a merge conflict exists and cannot continue.
-	ErrorCodeMergeConflict ErrorCode = C.GIT_EMERGECONFLICT
+	// Operation not allowed on bare repository
+	ErrBareRepo ErrorCode = C.GIT_EBAREREPO
+	// HEAD refers to branch with no commits
+	ErrUnbornBranch ErrorCode = C.GIT_EUNBORNBRANCH
+	// Merge in progress prevented operation
+	ErrUnmerged ErrorCode = C.GIT_EUNMERGED
+	// Reference was not fast-forwardable
+	ErrNonFastForward ErrorCode = C.GIT_ENONFASTFORWARD
+	// Name/ref spec was not in a valid format
+	ErrInvalidSpec ErrorCode = C.GIT_EINVALIDSPEC
+	// Checkout conflicts prevented operation
+	ErrConflict ErrorCode = C.GIT_ECONFLICT
+	// Lock file prevented operation
+	ErrLocked ErrorCode = C.GIT_ELOCKED
+	// Reference value does not match expected
+	ErrModified ErrorCode = C.GIT_EMODIFIED
+	// Authentication failed
+	ErrAuth ErrorCode = C.GIT_EAUTH
+	// Server certificate is invalid
+	ErrCertificate ErrorCode = C.GIT_ECERTIFICATE
+	// Patch/merge has already been applied
+	ErrApplied ErrorCode = C.GIT_EAPPLIED
+	// The requested peel operation is not possible
+	ErrPeel ErrorCode = C.GIT_EPEEL
+	// Unexpected EOF
+	ErrEOF ErrorCode = C.GIT_EEOF
+	// Uncommitted changes in index prevented operation
+	ErrUncommitted ErrorCode = C.GIT_EUNCOMMITTED
+	// The operation is not valid for a directory
+	ErrDirectory ErrorCode = C.GIT_EDIRECTORY
+	// A merge conflict exists and cannot continue
+	ErrMergeConflict ErrorCode = C.GIT_EMERGECONFLICT
 
-	// ErrorCodePassthrough represents that a user-configured callback refused to act.
-	ErrorCodePassthrough ErrorCode = C.GIT_PASSTHROUGH
-	// ErrorCodeIterOver signals end of iteration with iterator.
-	ErrorCodeIterOver ErrorCode = C.GIT_ITEROVER
-	// ErrorCodeRetry is an internal-only error code.
-	ErrorCodeRetry ErrorCode = C.GIT_RETRY
-	// ErrorCodeMismatch represents a hashsum mismatch in object.
-	ErrorCodeMismatch ErrorCode = C.GIT_EMISMATCH
-	// ErrorCodeIndexDirty represents that unsaved changes in the index would be overwritten.
-	ErrorCodeIndexDirty ErrorCode = C.GIT_EINDEXDIRTY
-	// ErrorCodeApplyFail represents that a patch application failed.
-	ErrorCodeApplyFail ErrorCode = C.GIT_EAPPLYFAIL
+	// Internal only
+	ErrPassthrough ErrorCode = C.GIT_PASSTHROUGH
+	// Signals end of iteration with iterator
+	ErrIterOver ErrorCode = C.GIT_ITEROVER
 )
 
 var (
 	ErrInvalid = errors.New("Invalid state for operation")
 )
 
-// doNotCompare is an idiomatic way of making structs non-comparable to avoid
-// future field additions to make them non-comparable.
-type doNotCompare [0]func()
-
 var pointerHandles *HandleList
-var remotePointers *remotePointerList
 
 func init() {
-	initLibGit2()
-}
-
-func initLibGit2() {
 	pointerHandles = NewHandleList()
-	remotePointers = newRemotePointerList()
 
 	C.git_libgit2_init()
-	features := Features()
 
 	// Due to the multithreaded nature of Go and its interaction with
 	// calling C functions, we cannot work with a library that was not built
 	// with multi-threading support. The most likely outcome is a segfault
 	// or panic at an incomprehensible time, so let's make it easy by
 	// panicking right here.
-	if features&FeatureThreads == 0 {
+	if Features()&FeatureThreads == 0 {
 		panic("libgit2 was not built with threading support")
 	}
 
-	if features&FeatureHTTPS == 0 {
-		if err := registerManagedHTTP(); err != nil {
-			panic(err)
-		}
-	} else {
-		// This is not something we should be doing, as we may be stomping all over
-		// someone else's setup. The user should do this themselves or use some
-		// binding/wrapper which does it in such a way that they can be sure
-		// they're the only ones setting it up.
-		C.git_openssl_set_locking()
-	}
-	if features&FeatureSSH == 0 {
-		if err := registerManagedSSH(); err != nil {
-			panic(err)
-		}
-	}
-}
-
-// Shutdown frees all the resources acquired by libgit2. Make sure no
-// references to any libgit2 go objects are live before calling this.
-// After this is called, invoking any function from this library will result in
-// undefined behavior, so make sure this is called carefully.
-func Shutdown() {
-	if err := unregisterManagedTransports(); err != nil {
+	if err := RegisterManagedTls(); err != nil {
 		panic(err)
 	}
-	pointerHandles.Clear()
-	remotePointers.clear()
 
-	C.git_libgit2_shutdown()
-}
-
-// ReInit reinitializes the global state, this is useful if the effective user
-// id has changed and you want to update the stored search paths for gitconfig
-// files. This function frees any references to objects, so it should be called
-// before any other functions are called.
-func ReInit() {
-	Shutdown()
-	initLibGit2()
+	// This is not something we should be doing, as we may be
+	// stomping all over someone else's setup. The user should do
+	// this themselves or use some binding/wrapper which does it
+	// in such a way that they can be sure they're the only ones
+	// setting it up.
+	C.git_openssl_set_locking()
 }
 
 // Oid represents the id for a Git object.
@@ -223,13 +171,13 @@ func NewOid(s string) (*Oid, error) {
 
 	o := new(Oid)
 
-	slice, err := hex.DecodeString(s)
-	if err != nil {
-		return nil, err
+	slice, error := hex.DecodeString(s)
+	if error != nil {
+		return nil, error
 	}
 
 	if len(slice) != 20 {
-		return nil, &GitError{"invalid oid", ErrorClassNone, ErrorCodeGeneric}
+		return nil, &GitError{"Invalid Oid", ErrClassNone, ErrGeneric}
 	}
 
 	copy(o[:], slice[:20])
@@ -245,16 +193,22 @@ func (oid *Oid) Cmp(oid2 *Oid) int {
 }
 
 func (oid *Oid) Copy() *Oid {
-	ret := *oid
-	return &ret
+	ret := new(Oid)
+	copy(ret[:], oid[:])
+	return ret
 }
 
 func (oid *Oid) Equal(oid2 *Oid) bool {
-	return *oid == *oid2
+	return bytes.Equal(oid[:], oid2[:])
 }
 
 func (oid *Oid) IsZero() bool {
-	return *oid == Oid{}
+	for _, a := range oid {
+		if a != 0 {
+			return false
+		}
+	}
+	return true
 }
 
 func (oid *Oid) NCmp(oid2 *Oid, n uint) int {
@@ -282,7 +236,6 @@ func ShortenOids(ids []*Oid, minlen int) (int, error) {
 			return int(ret), MakeGitError(ret)
 		}
 	}
-	runtime.KeepAlive(ids)
 	return int(ret), nil
 }
 
@@ -297,6 +250,7 @@ func (e GitError) Error() string {
 }
 
 func IsErrorClass(err error, c ErrorClass) bool {
+
 	if err == nil {
 		return false
 	}
@@ -316,23 +270,20 @@ func IsErrorCode(err error, c ErrorCode) bool {
 	return false
 }
 
-func MakeGitError(c C.int) error {
+func MakeGitError(errorCode C.int) error {
+
 	var errMessage string
 	var errClass ErrorClass
-	errorCode := ErrorCode(c)
-	if errorCode != ErrorCodeIterOver {
-		err := C.git_error_last()
+	if errorCode != C.GIT_ITEROVER {
+		err := C.giterr_last()
 		if err != nil {
 			errMessage = C.GoString(err.message)
 			errClass = ErrorClass(err.klass)
 		} else {
-			errClass = ErrorClassInvalid
+			errClass = ErrClassInvalid
 		}
 	}
-	if errMessage == "" {
-		errMessage = errorCode.String()
-	}
-	return &GitError{errMessage, errClass, errorCode}
+	return &GitError{errMessage, errClass, ErrorCode(errorCode)}
 }
 
 func MakeGitError2(err int) error {
@@ -353,17 +304,6 @@ func ucbool(b bool) C.uint {
 	return C.uint(0)
 }
 
-func setCallbackError(errorMessage **C.char, err error) C.int {
-	if err != nil {
-		*errorMessage = C.CString(err.Error())
-		if gitError, ok := err.(*GitError); ok {
-			return C.int(gitError.Code)
-		}
-		return C.int(ErrorCodeUser)
-	}
-	return C.int(ErrorCodeOK)
-}
-
 func Discover(start string, across_fs bool, ceiling_dirs []string) (string, error) {
 	ceildirs := C.CString(strings.Join(ceiling_dirs, string(C.GIT_PATH_LIST_SEPARATOR)))
 	defer C.free(unsafe.Pointer(ceildirs))
@@ -372,7 +312,7 @@ func Discover(start string, across_fs bool, ceiling_dirs []string) (string, erro
 	defer C.free(unsafe.Pointer(cstart))
 
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()

git_dynamic.go

@@ -0,0 +1,14 @@
+// +build !static
+
+package git
+
+/*
+#include <git2.h>
+#cgo pkg-config: libgit2
+
+#if LIBGIT2_VER_MAJOR != 0 || LIBGIT2_VER_MINOR != 25
+# error "Invalid libgit2 version; this git2go supports libgit2 v0.25"
+#endif
+
+*/
+import "C"

git_static.go

@@ -0,0 +1,17 @@
+// +build static
+
+package git
+
+/*
+#cgo CFLAGS: -I${SRCDIR}/vendor/libgit2/include
+#cgo LDFLAGS: -L${SRCDIR}/vendor/libgit2/build/ -lgit2
+#cgo windows LDFLAGS: -lwinhttp
+#cgo !windows pkg-config: --static ${SRCDIR}/vendor/libgit2/build/libgit2.pc
+#include <git2.h>
+
+#if LIBGIT2_VER_MAJOR != 0 || LIBGIT2_VER_MINOR != 25
+# error "Invalid libgit2 version; this git2go supports libgit2 v0.25"
+#endif
+
+*/
+import "C"

git_test.go

@@ -1,51 +1,13 @@
 package git
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
 	"path"
-	"reflect"
 	"testing"
 	"time"
 )
 
-func TestMain(m *testing.M) {
-	if err := registerManagedHTTP(); err != nil {
-		panic(err)
-	}
-
-	ret := m.Run()
-
-	if err := unregisterManagedTransports(); err != nil {
-		panic(err)
-	}
-
-	// Ensure that we are not leaking any pointer handles.
-	pointerHandles.Lock()
-	if len(pointerHandles.handles) > 0 {
-		for h, ptr := range pointerHandles.handles {
-			fmt.Printf("%016p: %v %+v\n", h, reflect.TypeOf(ptr), ptr)
-		}
-		panic("pointer handle list not empty")
-	}
-	pointerHandles.Unlock()
-
-	// Or remote pointers.
-	remotePointers.Lock()
-	if len(remotePointers.pointers) > 0 {
-		for ptr, remote := range remotePointers.pointers {
-			fmt.Printf("%016p: %+v\n", ptr, remote)
-		}
-		panic("remote pointer list not empty")
-	}
-	remotePointers.Unlock()
-
-	Shutdown()
-
-	os.Exit(ret)
-}
-
 func cleanupTestRepo(t *testing.T, r *Repository) {
 	var err error
 	if r.IsBare() {
@@ -83,16 +45,7 @@ func createBareTestRepo(t *testing.T) *Repository {
 	return repo
 }
 
-// commitOptions contains any extra options for creating commits in the seed repo
-type commitOptions struct {
-	CommitSigningCallback
-}
-
 func seedTestRepo(t *testing.T, repo *Repository) (*Oid, *Oid) {
-	return seedTestRepoOpt(t, repo, commitOptions{})
-}
-
-func seedTestRepoOpt(t *testing.T, repo *Repository, opts commitOptions) (*Oid, *Oid) {
 	loc, err := time.LoadLocation("Europe/Berlin")
 	checkFatal(t, err)
 	sig := &Signature{
@@ -116,28 +69,6 @@ func seedTestRepoOpt(t *testing.T, repo *Repository, opts commitOptions) (*Oid,
 	commitId, err := repo.CreateCommit("HEAD", sig, sig, message, tree)
 	checkFatal(t, err)
 
-	if opts.CommitSigningCallback != nil {
-		commit, err := repo.LookupCommit(commitId)
-		checkFatal(t, err)
-
-		signature, signatureField, err := opts.CommitSigningCallback(commit.ContentToSign())
-		checkFatal(t, err)
-
-		oid, err := commit.WithSignature(signature, signatureField)
-		checkFatal(t, err)
-		newCommit, err := repo.LookupCommit(oid)
-		checkFatal(t, err)
-		head, err := repo.Head()
-		checkFatal(t, err)
-		_, err = repo.References.Create(
-			head.Name(),
-			newCommit.Id(),
-			true,
-			"repoint to signed commit",
-		)
-		checkFatal(t, err)
-	}
-
 	return commitId, treeId
 }
 
@@ -193,7 +124,7 @@ func TestOidZero(t *testing.T) {
 func TestEmptyOid(t *testing.T) {
 	t.Parallel()
 	_, err := NewOid("")
-	if err == nil || !IsErrorCode(err, ErrorCodeGeneric) {
+	if err == nil || !IsErrorCode(err, ErrGeneric) {
 		t.Fatal("Should have returned invalid error")
 	}
 }

graph.go

@@ -13,9 +13,6 @@ func (repo *Repository) DescendantOf(commit, ancestor *Oid) (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_graph_descendant_of(repo.ptr, commit.toC(), ancestor.toC())
-	runtime.KeepAlive(repo)
-	runtime.KeepAlive(commit)
-	runtime.KeepAlive(ancestor)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -31,39 +28,9 @@ func (repo *Repository) AheadBehind(local, upstream *Oid) (ahead, behind int, er
 	var behindT C.size_t
 
 	ret := C.git_graph_ahead_behind(&aheadT, &behindT, repo.ptr, local.toC(), upstream.toC())
-	runtime.KeepAlive(repo)
-	runtime.KeepAlive(local)
-	runtime.KeepAlive(upstream)
 	if ret < 0 {
 		return 0, 0, MakeGitError(ret)
 	}
 
 	return int(aheadT), int(behindT), nil
 }
-
-// ReachableFromAny returns whether a commit is reachable from any of a list of
-// commits by following parent edges.
-func (repo *Repository) ReachableFromAny(commit *Oid, descendants []*Oid) (bool, error) {
-	if len(descendants) == 0 {
-		return false, nil
-	}
-
-	coids := make([]C.git_oid, len(descendants))
-	for i := 0; i < len(descendants); i++ {
-		coids[i] = *descendants[i].toC()
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_graph_reachable_from_any(repo.ptr, commit.toC(), &coids[0], C.size_t(len(descendants)))
-	runtime.KeepAlive(repo)
-	runtime.KeepAlive(commit)
-	runtime.KeepAlive(coids)
-	runtime.KeepAlive(descendants)
-	if ret < 0 {
-		return false, MakeGitError(ret)
-	}
-
-	return (ret > 0), nil
-}

graph_test.go

@@ -1,75 +0,0 @@
-package git
-
-import (
-	"testing"
-)
-
-func TestReachableFromAny(t *testing.T) {
-	repo, err := OpenRepository("testdata/TestGitRepository.git")
-	checkFatal(t, err)
-	defer repo.Free()
-
-	for name, tc := range map[string]struct {
-		reachable   bool
-		commit      string
-		descendants []string
-	}{
-		"empty": {
-			reachable: false,
-			commit:    "49322bb17d3acc9146f98c97d078513228bbf3c0",
-		},
-		"same": {
-			reachable:   true,
-			commit:      "49322bb17d3acc9146f98c97d078513228bbf3c0",
-			descendants: []string{"49322bb17d3acc9146f98c97d078513228bbf3c0"},
-		},
-		"unreachable": {
-			reachable:   false,
-			commit:      "ac7e7e44c1885efb472ad54a78327d66bfc4ecef",
-			descendants: []string{"58be4659bb571194ed4562d04b359d26216f526e"},
-		},
-		"unreachable-reverse": {
-			reachable:   false,
-			commit:      "58be4659bb571194ed4562d04b359d26216f526e",
-			descendants: []string{"ac7e7e44c1885efb472ad54a78327d66bfc4ecef"},
-		},
-		"root": {
-			reachable: false,
-			commit:    "42e4e7c5e507e113ebbb7801b16b52cf867b7ce1",
-			descendants: []string{
-				"ac7e7e44c1885efb472ad54a78327d66bfc4ecef",
-				"d86a2aada2f5e7ccf6f11880bfb9ab404e8a8864",
-				"f73b95671f326616d66b2afb3bdfcdbbce110b44",
-				"d0114ab8ac326bab30e3a657a0397578c5a1af88",
-			},
-		},
-		"head": {
-			reachable: false,
-			commit:    "49322bb17d3acc9146f98c97d078513228bbf3c0",
-			descendants: []string{
-				"ac7e7e44c1885efb472ad54a78327d66bfc4ecef",
-				"d86a2aada2f5e7ccf6f11880bfb9ab404e8a8864",
-				"f73b95671f326616d66b2afb3bdfcdbbce110b44",
-				"d0114ab8ac326bab30e3a657a0397578c5a1af88",
-			},
-		},
-	} {
-		tc := tc
-		t.Run(name, func(t *testing.T) {
-			commit, err := NewOid(tc.commit)
-			checkFatal(t, err)
-
-			descendants := make([]*Oid, len(tc.descendants))
-			for i, o := range tc.descendants {
-				descendants[i], err = NewOid(o)
-				checkFatal(t, err)
-			}
-			reachable, err := repo.ReachableFromAny(commit, descendants)
-			checkFatal(t, err)
-
-			if reachable != tc.reachable {
-				t.Errorf("ReachableFromAny(%s, %v) = %v, wanted %v", tc.commit, tc.descendants, reachable, tc.reachable)
-			}
-		})
-	}
-}

handles.go

@@ -11,7 +11,6 @@ import (
 )
 
 type HandleList struct {
-	doNotCompare
 	sync.RWMutex
 	// stores the Go pointers
 	handles map[unsafe.Pointer]interface{}
@@ -44,16 +43,6 @@ func (v *HandleList) Untrack(handle unsafe.Pointer) {
 	v.Unlock()
 }
 
-// Clear stops tracking all the managed pointers.
-func (v *HandleList) Clear() {
-	v.Lock()
-	for handle := range v.handles {
-		delete(v.handles, handle)
-		C.free(handle)
-	}
-	v.Unlock()
-}
-
 // Get retrieves the pointer from the given handle
 func (v *HandleList) Get(handle unsafe.Pointer) interface{} {
 	v.RLock()

http.go

@@ -1,243 +0,0 @@
-package git
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"net/http"
-	"net/url"
-	"sync"
-)
-
-// RegisterManagedHTTPTransport registers a Go-native implementation of an
-// HTTP/S transport that doesn't rely on any system libraries (e.g.
-// libopenssl/libmbedtls).
-//
-// If Shutdown or ReInit are called, make sure that the smart transports are
-// freed before it.
-func RegisterManagedHTTPTransport(protocol string) (*RegisteredSmartTransport, error) {
-	return NewRegisteredSmartTransport(protocol, true, httpSmartSubtransportFactory)
-}
-
-func registerManagedHTTP() error {
-	globalRegisteredSmartTransports.Lock()
-	defer globalRegisteredSmartTransports.Unlock()
-
-	for _, protocol := range []string{"http", "https"} {
-		if _, ok := globalRegisteredSmartTransports.transports[protocol]; ok {
-			continue
-		}
-		managed, err := newRegisteredSmartTransport(protocol, true, httpSmartSubtransportFactory, true)
-		if err != nil {
-			return fmt.Errorf("failed to register transport for %q: %v", protocol, err)
-		}
-		globalRegisteredSmartTransports.transports[protocol] = managed
-	}
-	return nil
-}
-
-func httpSmartSubtransportFactory(remote *Remote, transport *Transport) (SmartSubtransport, error) {
-	var proxyFn func(*http.Request) (*url.URL, error)
-	remoteConnectOpts, err := transport.SmartRemoteConnectOptions()
-	if err != nil {
-		return nil, err
-	}
-	switch remoteConnectOpts.ProxyOptions.Type {
-	case ProxyTypeNone:
-		proxyFn = nil
-	case ProxyTypeAuto:
-		proxyFn = http.ProxyFromEnvironment
-	case ProxyTypeSpecified:
-		parsedUrl, err := url.Parse(remoteConnectOpts.ProxyOptions.Url)
-		if err != nil {
-			return nil, err
-		}
-
-		proxyFn = http.ProxyURL(parsedUrl)
-	}
-
-	return &httpSmartSubtransport{
-		transport: transport,
-		client: &http.Client{
-			Transport: &http.Transport{
-				Proxy: proxyFn,
-			},
-		},
-	}, nil
-}
-
-type httpSmartSubtransport struct {
-	transport *Transport
-	client    *http.Client
-}
-
-func (t *httpSmartSubtransport) Action(url string, action SmartServiceAction) (SmartSubtransportStream, error) {
-	var req *http.Request
-	var err error
-	switch action {
-	case SmartServiceActionUploadpackLs:
-		req, err = http.NewRequest("GET", url+"/info/refs?service=git-upload-pack", nil)
-
-	case SmartServiceActionUploadpack:
-		req, err = http.NewRequest("POST", url+"/git-upload-pack", nil)
-		if err != nil {
-			break
-		}
-		req.Header.Set("Content-Type", "application/x-git-upload-pack-request")
-
-	case SmartServiceActionReceivepackLs:
-		req, err = http.NewRequest("GET", url+"/info/refs?service=git-receive-pack", nil)
-
-	case SmartServiceActionReceivepack:
-		req, err = http.NewRequest("POST", url+"/info/refs?service=git-upload-pack", nil)
-		if err != nil {
-			break
-		}
-		req.Header.Set("Content-Type", "application/x-git-receive-pack-request")
-
-	default:
-		err = errors.New("unknown action")
-	}
-
-	if err != nil {
-		return nil, err
-	}
-
-	req.Header.Set("User-Agent", "git/2.0 (libgit2)")
-
-	stream := newManagedHttpStream(t, req)
-	if req.Method == "POST" {
-		stream.recvReply.Add(1)
-		stream.sendRequestBackground()
-	}
-
-	return stream, nil
-}
-
-func (t *httpSmartSubtransport) Close() error {
-	return nil
-}
-
-func (t *httpSmartSubtransport) Free() {
-	t.client = nil
-}
-
-type httpSmartSubtransportStream struct {
-	owner       *httpSmartSubtransport
-	req         *http.Request
-	resp        *http.Response
-	reader      *io.PipeReader
-	writer      *io.PipeWriter
-	sentRequest bool
-	recvReply   sync.WaitGroup
-	httpError   error
-}
-
-func newManagedHttpStream(owner *httpSmartSubtransport, req *http.Request) *httpSmartSubtransportStream {
-	r, w := io.Pipe()
-	return &httpSmartSubtransportStream{
-		owner:  owner,
-		req:    req,
-		reader: r,
-		writer: w,
-	}
-}
-
-func (self *httpSmartSubtransportStream) Read(buf []byte) (int, error) {
-	if !self.sentRequest {
-		self.recvReply.Add(1)
-		if err := self.sendRequest(); err != nil {
-			return 0, err
-		}
-	}
-
-	if err := self.writer.Close(); err != nil {
-		return 0, err
-	}
-
-	self.recvReply.Wait()
-
-	if self.httpError != nil {
-		return 0, self.httpError
-	}
-
-	return self.resp.Body.Read(buf)
-}
-
-func (self *httpSmartSubtransportStream) Write(buf []byte) (int, error) {
-	if self.httpError != nil {
-		return 0, self.httpError
-	}
-	return self.writer.Write(buf)
-}
-
-func (self *httpSmartSubtransportStream) Free() {
-	if self.resp != nil {
-		self.resp.Body.Close()
-	}
-}
-
-func (self *httpSmartSubtransportStream) sendRequestBackground() {
-	go func() {
-		self.httpError = self.sendRequest()
-	}()
-	self.sentRequest = true
-}
-
-func (self *httpSmartSubtransportStream) sendRequest() error {
-	defer self.recvReply.Done()
-	self.resp = nil
-
-	var resp *http.Response
-	var err error
-	var userName string
-	var password string
-	for {
-		req := &http.Request{
-			Method: self.req.Method,
-			URL:    self.req.URL,
-			Header: self.req.Header,
-		}
-		if req.Method == "POST" {
-			req.Body = self.reader
-			req.ContentLength = -1
-		}
-
-		if userName != "" && password != "" {
-			req.SetBasicAuth(userName, password)
-		}
-		resp, err = http.DefaultClient.Do(req)
-		if err != nil {
-			return err
-		}
-
-		if resp.StatusCode == http.StatusOK {
-			break
-		}
-
-		if resp.StatusCode == http.StatusUnauthorized {
-			resp.Body.Close()
-
-			cred, err := self.owner.transport.SmartCredentials("", CredentialTypeUserpassPlaintext)
-			if err != nil {
-				return err
-			}
-			defer cred.Free()
-
-			userName, password, err = cred.GetUserpassPlaintext()
-			if err != nil {
-				return err
-			}
-
-			continue
-		}
-
-		// Any other error we treat as a hard error and punt back to the caller
-		resp.Body.Close()
-		return fmt.Errorf("Unhandled HTTP error %s", resp.Status)
-	}
-
-	self.sentRequest = true
-	self.resp = resp
-	return nil
-}

ignore.go

@@ -17,7 +17,6 @@ func (v *Repository) AddIgnoreRule(rules string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_ignore_add_rule(v.ptr, crules)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -29,7 +28,6 @@ func (v *Repository) ClearInternalIgnoreRules() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_ignore_clear_internal_rules(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -46,7 +44,6 @@ func (v *Repository) IsPathIgnored(path string) (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_ignore_path_is_ignored(&ignored, v.ptr, cpath)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}

index.go

@@ -15,50 +15,42 @@ import (
 	"unsafe"
 )
 
-type IndexMatchedPathCallback func(string, string) error
-type indexMatchedPathCallbackData struct {
-	callback    IndexMatchedPathCallback
-	errorTarget *error
-}
+type IndexMatchedPathCallback func(string, string) int
 
-// IndexAddOption is a set of flags for APIs that add files matching pathspec.
-type IndexAddOption uint
+type IndexAddOpts uint
 
 const (
-	IndexAddDefault              IndexAddOption = C.GIT_INDEX_ADD_DEFAULT
-	IndexAddForce                IndexAddOption = C.GIT_INDEX_ADD_FORCE
-	IndexAddDisablePathspecMatch IndexAddOption = C.GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH
-	IndexAddCheckPathspec        IndexAddOption = C.GIT_INDEX_ADD_CHECK_PATHSPEC
+	IndexAddDefault              IndexAddOpts = C.GIT_INDEX_ADD_DEFAULT
+	IndexAddForce                IndexAddOpts = C.GIT_INDEX_ADD_FORCE
+	IndexAddDisablePathspecMatch IndexAddOpts = C.GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH
+	IndexAddCheckPathspec        IndexAddOpts = C.GIT_INDEX_ADD_CHECK_PATHSPEC
 )
 
-// IndexStageState indicates the state of the git index.
-type IndexStageState int
+type IndexStageOpts int
 
 const (
 	// IndexStageAny matches any index stage.
 	//
 	// Some index APIs take a stage to match; pass this value to match
 	// any entry matching the path regardless of stage.
-	IndexStageAny IndexStageState = C.GIT_INDEX_STAGE_ANY
+	IndexStageAny IndexStageOpts = C.GIT_INDEX_STAGE_ANY
 	// IndexStageNormal is a normal staged file in the index.
-	IndexStageNormal IndexStageState = C.GIT_INDEX_STAGE_NORMAL
+	IndexStageNormal IndexStageOpts = C.GIT_INDEX_STAGE_NORMAL
 	// IndexStageAncestor is the ancestor side of a conflict.
-	IndexStageAncestor IndexStageState = C.GIT_INDEX_STAGE_ANCESTOR
+	IndexStageAncestor IndexStageOpts = C.GIT_INDEX_STAGE_ANCESTOR
 	// IndexStageOurs is the "ours" side of a conflict.
-	IndexStageOurs IndexStageState = C.GIT_INDEX_STAGE_OURS
+	IndexStageOurs IndexStageOpts = C.GIT_INDEX_STAGE_OURS
 	// IndexStageTheirs is the "theirs" side of a conflict.
-	IndexStageTheirs IndexStageState = C.GIT_INDEX_STAGE_THEIRS
+	IndexStageTheirs IndexStageOpts = C.GIT_INDEX_STAGE_THEIRS
 )
 
 type Index struct {
-	doNotCompare
-	ptr  *C.git_index
-	repo *Repository
+	ptr *C.git_index
 }
 
 type IndexTime struct {
-	Seconds     int32
-	Nanoseconds uint32
+	seconds     int32
+	nanoseconds uint32
 }
 
 type IndexEntry struct {
@@ -89,17 +81,15 @@ func newIndexEntryFromC(entry *C.git_index_entry) *IndexEntry {
 }
 
 func populateCIndexEntry(source *IndexEntry, dest *C.git_index_entry) {
-	dest.ctime.seconds = C.int32_t(source.Ctime.Seconds)
-	dest.ctime.nanoseconds = C.uint32_t(source.Ctime.Nanoseconds)
-	dest.mtime.seconds = C.int32_t(source.Mtime.Seconds)
-	dest.mtime.nanoseconds = C.uint32_t(source.Mtime.Nanoseconds)
+	dest.ctime.seconds = C.int32_t(source.Ctime.seconds)
+	dest.ctime.nanoseconds = C.uint32_t(source.Ctime.nanoseconds)
+	dest.mtime.seconds = C.int32_t(source.Mtime.seconds)
+	dest.mtime.nanoseconds = C.uint32_t(source.Mtime.nanoseconds)
 	dest.mode = C.uint32_t(source.Mode)
 	dest.uid = C.uint32_t(source.Uid)
 	dest.gid = C.uint32_t(source.Gid)
 	dest.file_size = C.uint32_t(source.Size)
-	if source.Id != nil {
-		dest.id = *source.Id.toC()
-	}
+	dest.id = *source.Id.toC()
 	dest.path = C.CString(source.Path)
 }
 
@@ -107,8 +97,8 @@ func freeCIndexEntry(entry *C.git_index_entry) {
 	C.free(unsafe.Pointer(entry.path))
 }
 
-func newIndexFromC(ptr *C.git_index, repo *Repository) *Index {
-	idx := &Index{ptr: ptr, repo: repo}
+func newIndexFromC(ptr *C.git_index) *Index {
+	idx := &Index{ptr}
 	runtime.SetFinalizer(idx, (*Index).Free)
 	return idx
 }
@@ -125,7 +115,7 @@ func NewIndex() (*Index, error) {
 		return nil, MakeGitError(err)
 	}
 
-	return newIndexFromC(ptr, nil), nil
+	return newIndexFromC(ptr), nil
 }
 
 // OpenIndex creates a new index at the given path. If the file does
@@ -143,29 +133,13 @@ func OpenIndex(path string) (*Index, error) {
 		return nil, MakeGitError(err)
 	}
 
-	return newIndexFromC(ptr, nil), nil
+	return newIndexFromC(ptr), nil
 }
 
 // Path returns the index' path on disk or an empty string if it
 // exists only in memory.
 func (v *Index) Path() string {
-	ret := C.GoString(C.git_index_path(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
-}
-
-// Clear clears the index object in memory; changes must be explicitly
-// written to disk for them to take effect persistently
-func (v *Index) Clear() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	err := C.git_index_clear(v.ptr)
-	runtime.KeepAlive(v)
-	if err < 0 {
-		return MakeGitError(err)
-	}
-	return nil
+	return C.GoString(C.git_index_path(v.ptr))
 }
 
 // Add adds or replaces the given entry to the index, making a copy of
@@ -179,9 +153,7 @@ func (v *Index) Add(entry *IndexEntry) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	err := C.git_index_add(v.ptr, &centry)
-	runtime.KeepAlive(v)
-	if err < 0 {
+	if err := C.git_index_add(v.ptr, &centry); err < 0 {
 		return MakeGitError(err)
 	}
 
@@ -196,7 +168,6 @@ func (v *Index) AddByPath(path string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_add_bypath(v.ptr, cstr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -204,45 +175,18 @@ func (v *Index) AddByPath(path string) error {
 	return nil
 }
 
-// AddFromBuffer adds or replaces an index entry from a buffer in memory
-func (v *Index) AddFromBuffer(entry *IndexEntry, buffer []byte) error {
-	var centry C.git_index_entry
-
-	populateCIndexEntry(entry, &centry)
-	defer freeCIndexEntry(&centry)
-
-	var cbuffer unsafe.Pointer
-	if len(buffer) > 0 {
-		cbuffer = unsafe.Pointer(&buffer[0])
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	if err := C.git_index_add_from_buffer(v.ptr, &centry, cbuffer, C.size_t(len(buffer))); err < 0 {
-		return MakeGitError(err)
-	}
-
-	return nil
-}
-
-func (v *Index) AddAll(pathspecs []string, flags IndexAddOption, callback IndexMatchedPathCallback) error {
+func (v *Index) AddAll(pathspecs []string, flags IndexAddOpts, callback IndexMatchedPathCallback) error {
 	cpathspecs := C.git_strarray{}
 	cpathspecs.count = C.size_t(len(pathspecs))
 	cpathspecs.strings = makeCStringsFromStrings(pathspecs)
 	defer freeStrarray(&cpathspecs)
 
-	var err error
-	data := indexMatchedPathCallbackData{
-		callback:    callback,
-		errorTarget: &err,
-	}
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	var handle unsafe.Pointer
 	if callback != nil {
-		handle = pointerHandles.Track(&data)
+		handle = pointerHandles.Track(callback)
 		defer pointerHandles.Untrack(handle)
 	}
 
@@ -252,14 +196,9 @@ func (v *Index) AddAll(pathspecs []string, flags IndexAddOption, callback IndexM
 		C.uint(flags),
 		handle,
 	)
-	runtime.KeepAlive(v)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
-
 	return nil
 }
 
@@ -269,17 +208,12 @@ func (v *Index) UpdateAll(pathspecs []string, callback IndexMatchedPathCallback)
 	cpathspecs.strings = makeCStringsFromStrings(pathspecs)
 	defer freeStrarray(&cpathspecs)
 
-	var err error
-	data := indexMatchedPathCallbackData{
-		callback:    callback,
-		errorTarget: &err,
-	}
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	var handle unsafe.Pointer
 	if callback != nil {
-		handle = pointerHandles.Track(&data)
+		handle = pointerHandles.Track(callback)
 		defer pointerHandles.Untrack(handle)
 	}
 
@@ -288,14 +222,9 @@ func (v *Index) UpdateAll(pathspecs []string, callback IndexMatchedPathCallback)
 		&cpathspecs,
 		handle,
 	)
-	runtime.KeepAlive(v)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
-
 	return nil
 }
 
@@ -305,17 +234,12 @@ func (v *Index) RemoveAll(pathspecs []string, callback IndexMatchedPathCallback)
 	cpathspecs.strings = makeCStringsFromStrings(pathspecs)
 	defer freeStrarray(&cpathspecs)
 
-	var err error
-	data := indexMatchedPathCallbackData{
-		callback:    callback,
-		errorTarget: &err,
-	}
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	var handle unsafe.Pointer
 	if callback != nil {
-		handle = pointerHandles.Track(&data)
+		handle = pointerHandles.Track(callback)
 		defer pointerHandles.Untrack(handle)
 	}
 
@@ -324,31 +248,19 @@ func (v *Index) RemoveAll(pathspecs []string, callback IndexMatchedPathCallback)
 		&cpathspecs,
 		handle,
 	)
-	runtime.KeepAlive(v)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
-
 	return nil
 }
 
 //export indexMatchedPathCallback
-func indexMatchedPathCallback(cPath, cMatchedPathspec *C.char, payload unsafe.Pointer) C.int {
-	data, ok := pointerHandles.Get(payload).(*indexMatchedPathCallbackData)
-	if !ok {
+func indexMatchedPathCallback(cPath, cMatchedPathspec *C.char, payload unsafe.Pointer) int {
+	if callback, ok := pointerHandles.Get(payload).(IndexMatchedPathCallback); ok {
+		return callback(C.GoString(cPath), C.GoString(cMatchedPathspec))
+	} else {
 		panic("invalid matched path callback")
 	}
-
-	err := data.callback(C.GoString(cPath), C.GoString(cMatchedPathspec))
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-
-	return C.int(ErrorCodeOK)
 }
 
 func (v *Index) RemoveByPath(path string) error {
@@ -359,7 +271,6 @@ func (v *Index) RemoveByPath(path string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_remove_bypath(v.ptr, cstr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -376,7 +287,6 @@ func (v *Index) RemoveDirectory(dir string, stage int) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_remove_directory(v.ptr, cstr, C.int(stage))
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -391,8 +301,6 @@ func (v *Index) WriteTreeTo(repo *Repository) (*Oid, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_write_tree_to(oid.toC(), v.ptr, repo.ptr)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(repo)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -407,8 +315,6 @@ func (v *Index) ReadTree(tree *Tree) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_read_tree(v.ptr, tree.cast_ptr)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(tree)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -423,7 +329,6 @@ func (v *Index) WriteTree() (*Oid, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_write_tree(oid.toC(), v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -436,7 +341,6 @@ func (v *Index) Write() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_index_write(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -450,9 +354,7 @@ func (v *Index) Free() {
 }
 
 func (v *Index) EntryCount() uint {
-	ret := uint(C.git_index_entrycount(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return uint(C.git_index_entrycount(v.ptr))
 }
 
 func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
@@ -460,9 +362,7 @@ func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
 	if centry == nil {
 		return nil, fmt.Errorf("Index out of Bounds")
 	}
-	ret := newIndexEntryFromC(centry)
-	runtime.KeepAlive(v)
-	return ret, nil
+	return newIndexEntryFromC(centry), nil
 }
 
 func (v *Index) EntryByPath(path string, stage int) (*IndexEntry, error) {
@@ -474,11 +374,9 @@ func (v *Index) EntryByPath(path string, stage int) (*IndexEntry, error) {
 
 	centry := C.git_index_get_bypath(v.ptr, cpath, C.int(stage))
 	if centry == nil {
-		return nil, MakeGitError(C.int(ErrorCodeNotFound))
+		return nil, MakeGitError(C.GIT_ENOTFOUND)
 	}
-	ret := newIndexEntryFromC(centry)
-	runtime.KeepAlive(v)
-	return ret, nil
+	return newIndexEntryFromC(centry), nil
 }
 
 func (v *Index) Find(path string) (uint, error) {
@@ -490,7 +388,6 @@ func (v *Index) Find(path string) (uint, error) {
 
 	var pos C.size_t
 	ret := C.git_index_find(&pos, v.ptr, cpath)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return uint(0), MakeGitError(ret)
 	}
@@ -506,7 +403,6 @@ func (v *Index) FindPrefix(prefix string) (uint, error) {
 
 	var pos C.size_t
 	ret := C.git_index_find_prefix(&pos, v.ptr, cprefix)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return uint(0), MakeGitError(ret)
 	}
@@ -514,15 +410,12 @@ func (v *Index) FindPrefix(prefix string) (uint, error) {
 }
 
 func (v *Index) HasConflicts() bool {
-	ret := C.git_index_has_conflicts(v.ptr) != 0
-	runtime.KeepAlive(v)
-	return ret
+	return C.git_index_has_conflicts(v.ptr) != 0
 }
 
 // FIXME: this might return an error
 func (v *Index) CleanupConflicts() {
 	C.git_index_conflict_cleanup(v.ptr)
-	runtime.KeepAlive(v)
 }
 
 func (v *Index) AddConflict(ancestor *IndexEntry, our *IndexEntry, their *IndexEntry) error {
@@ -553,10 +446,6 @@ func (v *Index) AddConflict(ancestor *IndexEntry, our *IndexEntry, their *IndexE
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_index_conflict_add(v.ptr, cancestor, cour, ctheir)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(ancestor)
-	runtime.KeepAlive(our)
-	runtime.KeepAlive(their)
 	if ecode < 0 {
 		return MakeGitError(ecode)
 	}
@@ -569,7 +458,7 @@ type IndexConflict struct {
 	Their    *IndexEntry
 }
 
-func (v *Index) Conflict(path string) (IndexConflict, error) {
+func (v *Index) GetConflict(path string) (IndexConflict, error) {
 
 	var cancestor *C.git_index_entry
 	var cour *C.git_index_entry
@@ -585,18 +474,11 @@ func (v *Index) Conflict(path string) (IndexConflict, error) {
 	if ecode < 0 {
 		return IndexConflict{}, MakeGitError(ecode)
 	}
-	ret := IndexConflict{
+	return IndexConflict{
 		Ancestor: newIndexEntryFromC(cancestor),
 		Our:      newIndexEntryFromC(cour),
 		Their:    newIndexEntryFromC(ctheir),
-	}
-	runtime.KeepAlive(v)
-	return ret, nil
-}
-
-// deprecated: You should use `Index.Conflict()` instead.
-func (v *Index) GetConflict(path string) (IndexConflict, error) {
-	return v.Conflict(path)
+	}, nil
 }
 
 func (v *Index) RemoveConflict(path string) error {
@@ -608,7 +490,6 @@ func (v *Index) RemoveConflict(path string) error {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_index_conflict_remove(v.ptr, cpath)
-	runtime.KeepAlive(v)
 	if ecode < 0 {
 		return MakeGitError(ecode)
 	}
@@ -616,7 +497,6 @@ func (v *Index) RemoveConflict(path string) error {
 }
 
 type IndexConflictIterator struct {
-	doNotCompare
 	ptr   *C.git_index_conflict_iterator
 	index *Index
 }
@@ -661,11 +541,9 @@ func (v *IndexConflictIterator) Next() (IndexConflict, error) {
 	if ecode < 0 {
 		return IndexConflict{}, MakeGitError(ecode)
 	}
-	ret := IndexConflict{
+	return IndexConflict{
 		Ancestor: newIndexEntryFromC(cancestor),
 		Our:      newIndexEntryFromC(cour),
 		Their:    newIndexEntryFromC(ctheir),
-	}
-	runtime.KeepAlive(v)
-	return ret, nil
+	}, nil
 }

index_test.go

@@ -3,7 +3,6 @@ package git
 import (
 	"io/ioutil"
 	"os"
-	"path"
 	"runtime"
 	"testing"
 )
@@ -60,29 +59,14 @@ func TestIndexWriteTreeTo(t *testing.T) {
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)
 
-	idx, err := NewIndex()
-	checkFatal(t, err)
+	repo2 := createTestRepo(t)
+	defer cleanupTestRepo(t, repo2)
 
-	odb, err := repo.Odb()
+	idx, err := repo.Index()
 	checkFatal(t, err)
-
-	content, err := ioutil.ReadFile(path.Join(repo.Workdir(), "README"))
+	err = idx.AddByPath("README")
 	checkFatal(t, err)
-
-	id, err := odb.Write(content, ObjectBlob)
-	checkFatal(t, err)
-
-	err = idx.Add(&IndexEntry{
-		Mode: FilemodeBlob,
-		Uid:  0,
-		Gid:  0,
-		Size: uint32(len(content)),
-		Id:   id,
-		Path: "README",
-	})
-	checkFatal(t, err)
-
-	treeId, err := idx.WriteTreeTo(repo)
+	treeId, err := idx.WriteTreeTo(repo2)
 	checkFatal(t, err)
 
 	if treeId.String() != "b7119b11e8ef7a1a5a34d3ac87f5b075228ac81e" {
@@ -165,30 +149,6 @@ func TestIndexRemoveDirectory(t *testing.T) {
 	}
 }
 
-func TestIndexAddFromBuffer(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	idx, err := repo.Index()
-	checkFatal(t, err)
-
-	entry := IndexEntry{
-		Path: "README",
-		Mode: FilemodeBlob,
-	}
-
-	err = idx.AddFromBuffer(&entry, []byte("foo\n"))
-	checkFatal(t, err)
-
-	treeId, err := idx.WriteTreeTo(repo)
-	checkFatal(t, err)
-
-	if treeId.String() != "b7119b11e8ef7a1a5a34d3ac87f5b075228ac81e" {
-		t.Fatalf("%v", treeId.String())
-	}
-}
-
 func TestIndexAddAllNoCallback(t *testing.T) {
 	t.Parallel()
 	repo := createTestRepo(t)
@@ -223,9 +183,9 @@ func TestIndexAddAllCallback(t *testing.T) {
 	checkFatal(t, err)
 
 	cbPath := ""
-	err = idx.AddAll([]string{}, IndexAddDefault, func(p, mP string) error {
+	err = idx.AddAll([]string{}, IndexAddDefault, func(p, mP string) int {
 		cbPath = p
-		return nil
+		return 0
 	})
 	checkFatal(t, err)
 	if cbPath != "README" {

indexer.go

@@ -1,97 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-
-extern const git_oid * git_indexer_hash(const git_indexer *idx);
-extern int git_indexer_append(git_indexer *idx, const void *data, size_t size, git_transfer_progress *stats);
-extern int git_indexer_commit(git_indexer *idx, git_transfer_progress *stats);
-extern int _go_git_indexer_new(git_indexer **out, const char *path, unsigned int mode, git_odb *odb, void *progress_cb_payload);
-extern void git_indexer_free(git_indexer *idx);
-*/
-import "C"
-import (
-	"reflect"
-	"runtime"
-	"unsafe"
-)
-
-// Indexer can post-process packfiles and create an .idx file for efficient
-// lookup.
-type Indexer struct {
-	doNotCompare
-	ptr        *C.git_indexer
-	stats      C.git_transfer_progress
-	ccallbacks C.git_remote_callbacks
-}
-
-// NewIndexer creates a new indexer instance.
-func NewIndexer(packfilePath string, odb *Odb, callback TransferProgressCallback) (indexer *Indexer, err error) {
-	var odbPtr *C.git_odb = nil
-	if odb != nil {
-		odbPtr = odb.ptr
-	}
-
-	indexer = new(Indexer)
-	populateRemoteCallbacks(&indexer.ccallbacks, &RemoteCallbacks{TransferProgressCallback: callback}, nil)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cstr := C.CString(packfilePath)
-	defer C.free(unsafe.Pointer(cstr))
-
-	ret := C._go_git_indexer_new(&indexer.ptr, cstr, 0, odbPtr, indexer.ccallbacks.payload)
-	runtime.KeepAlive(odb)
-	if ret < 0 {
-		untrackCallbacksPayload(&indexer.ccallbacks)
-		return nil, MakeGitError(ret)
-	}
-
-	runtime.SetFinalizer(indexer, (*Indexer).Free)
-	return indexer, nil
-}
-
-// Write adds data to the indexer.
-func (indexer *Indexer) Write(data []byte) (int, error) {
-	header := (*reflect.SliceHeader)(unsafe.Pointer(&data))
-	ptr := unsafe.Pointer(header.Data)
-	size := C.size_t(header.Len)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_indexer_append(indexer.ptr, ptr, size, &indexer.stats)
-	runtime.KeepAlive(indexer)
-	if ret < 0 {
-		return 0, MakeGitError(ret)
-	}
-
-	return len(data), nil
-}
-
-// Commit finalizes the pack and index. It resolves any pending deltas and
-// writes out the index file.
-//
-// It also returns the packfile's hash. A packfile's name is derived from the
-// sorted hashing of all object names.
-func (indexer *Indexer) Commit() (*Oid, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_indexer_commit(indexer.ptr, &indexer.stats)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	id := newOidFromC(C.git_indexer_hash(indexer.ptr))
-	runtime.KeepAlive(indexer)
-	return id, nil
-}
-
-// Free frees the indexer and its resources.
-func (indexer *Indexer) Free() {
-	untrackCallbacksPayload(&indexer.ccallbacks)
-	runtime.SetFinalizer(indexer, nil)
-	C.git_indexer_free(indexer.ptr)
-}

indexer_test.go

@@ -1,93 +0,0 @@
-package git
-
-import (
-	"fmt"
-	"io/ioutil"
-	"os"
-	"path"
-	"testing"
-)
-
-var (
-	// This is a packfile with three objects. The second is a delta which
-	// depends on the third, which is also a delta.
-	outOfOrderPack = []byte{
-		0x50, 0x41, 0x43, 0x4b, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03,
-		0x32, 0x78, 0x9c, 0x63, 0x67, 0x00, 0x00, 0x00, 0x10, 0x00, 0x08, 0x76,
-		0xe6, 0x8f, 0xe8, 0x12, 0x9b, 0x54, 0x6b, 0x10, 0x1a, 0xee, 0x95, 0x10,
-		0xc5, 0x32, 0x8e, 0x7f, 0x21, 0xca, 0x1d, 0x18, 0x78, 0x9c, 0x63, 0x62,
-		0x66, 0x4e, 0xcb, 0xcf, 0x07, 0x00, 0x02, 0xac, 0x01, 0x4d, 0x75, 0x01,
-		0xd7, 0x71, 0x36, 0x66, 0xf4, 0xde, 0x82, 0x27, 0x76, 0xc7, 0x62, 0x2c,
-		0x10, 0xf1, 0xb0, 0x7d, 0xe2, 0x80, 0xdc, 0x78, 0x9c, 0x63, 0x62, 0x62,
-		0x62, 0xb7, 0x03, 0x00, 0x00, 0x69, 0x00, 0x4c, 0xde, 0x7d, 0xaa, 0xe4,
-		0x19, 0x87, 0x58, 0x80, 0x61, 0x09, 0x9a, 0x33, 0xca, 0x7a, 0x31, 0x92,
-		0x6f, 0xae, 0x66, 0x75,
-	}
-)
-
-func TestIndexerOutOfOrder(t *testing.T) {
-	t.Parallel()
-
-	tmpPath, err := ioutil.TempDir("", "git2go")
-	checkFatal(t, err)
-	defer os.RemoveAll(tmpPath)
-
-	var finalStats TransferProgress
-	idx, err := NewIndexer(tmpPath, nil, func(stats TransferProgress) error {
-		finalStats = stats
-		return nil
-	})
-	checkFatal(t, err)
-	defer idx.Free()
-
-	_, err = idx.Write(outOfOrderPack)
-	checkFatal(t, err)
-	oid, err := idx.Commit()
-	checkFatal(t, err)
-
-	// The packfile contains the hash as the last 20 bytes.
-	expectedOid := NewOidFromBytes(outOfOrderPack[len(outOfOrderPack)-20:])
-	if !expectedOid.Equal(oid) {
-		t.Errorf("mismatched packfile hash, expected %v, got %v", expectedOid, oid)
-	}
-	if finalStats.TotalObjects != 3 {
-		t.Errorf("mismatched transferred objects, expected 3, got %v", finalStats.TotalObjects)
-	}
-	if finalStats.ReceivedObjects != 3 {
-		t.Errorf("mismatched received objects, expected 3, got %v", finalStats.ReceivedObjects)
-	}
-	if finalStats.IndexedObjects != 3 {
-		t.Errorf("mismatched indexed objects, expected 3, got %v", finalStats.IndexedObjects)
-	}
-
-	odb, err := NewOdb()
-	checkFatal(t, err)
-	defer odb.Free()
-
-	backend, err := NewOdbBackendOnePack(path.Join(tmpPath, fmt.Sprintf("pack-%s.idx", oid.String())))
-	checkFatal(t, err)
-	// Transfer the ownership of the backend to the odb, no freeing needed.
-	err = odb.AddBackend(backend, 1)
-	checkFatal(t, err)
-
-	packfileObjects := 0
-	err = odb.ForEach(func(id *Oid) error {
-		packfileObjects += 1
-		return nil
-	})
-	checkFatal(t, err)
-	if packfileObjects != 3 {
-		t.Errorf("mismatched packfile objects, expected 3, got %v", packfileObjects)
-	}
-
-	// Inspect one of the well-known objects in the packfile.
-	obj, err := odb.Read(NewOidFromBytes([]byte{
-		0x19, 0x10, 0x28, 0x15, 0x66, 0x3d, 0x23, 0xf8, 0xb7, 0x5a, 0x47, 0xe7,
-		0xa0, 0x19, 0x65, 0xdc, 0xdc, 0x96, 0x46, 0x8c,
-	}))
-	checkFatal(t, err)
-	defer obj.Free()
-	if "foo" != string(obj.Data()) {
-		t.Errorf("mismatched packfile object contents, expected foo, got %q", string(obj.Data()))
-	}
-}

mempack.go

@@ -1,92 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-#include <git2/sys/mempack.h>
-
-extern int git_mempack_new(git_odb_backend **out);
-extern int git_mempack_dump(git_buf *pack, git_repository *repo, git_odb_backend *backend);
-extern int git_mempack_reset(git_odb_backend *backend);
-extern void _go_git_odb_backend_free(git_odb_backend *backend);
-*/
-import "C"
-
-import (
-	"runtime"
-	"unsafe"
-)
-
-// Mempack is a custom ODB backend that permits packing object in-memory.
-type Mempack struct {
-	doNotCompare
-	ptr *C.git_odb_backend
-}
-
-// NewMempack creates a new mempack instance and registers it to the ODB.
-func NewMempack(odb *Odb) (mempack *Mempack, err error) {
-	mempack = new(Mempack)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_mempack_new(&mempack.ptr)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	ret = C.git_odb_add_backend(odb.ptr, mempack.ptr, C.int(999))
-	runtime.KeepAlive(odb)
-	if ret < 0 {
-		// Since git_odb_add_alternate() takes ownership of the ODB backend, the
-		// only case in which we free the mempack's memory is if it fails to be
-		// added to the ODB.
-		C._go_git_odb_backend_free(mempack.ptr)
-		return nil, MakeGitError(ret)
-	}
-
-	return mempack, nil
-}
-
-// Dump dumps all the queued in-memory writes to a packfile.
-//
-// It is the caller's responsibility to ensure that the generated packfile is
-// available to the repository (e.g. by writing it to disk, or doing something
-// crazy like distributing it across several copies of the repository over a
-// network).
-//
-// Once the generated packfile is available to the repository, call
-// Mempack.Reset to cleanup the memory store.
-//
-// Calling Mempack.Reset before the packfile has been written to disk will
-// result in an inconsistent repository (the objects in the memory store won't
-// be accessible).
-func (mempack *Mempack) Dump(repository *Repository) ([]byte, error) {
-	buf := C.git_buf{}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_mempack_dump(&buf, repository.ptr, mempack.ptr)
-	runtime.KeepAlive(repository)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	defer C.git_buf_dispose(&buf)
-
-	return C.GoBytes(unsafe.Pointer(buf.ptr), C.int(buf.size)), nil
-}
-
-// Reset resets the memory packer by clearing all the queued objects.
-//
-// This assumes that Mempack.Dump has been called before to store all the
-// queued objects into a single packfile.
-func (mempack *Mempack) Reset() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_mempack_reset(mempack.ptr)
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-	return nil
-}

mempack_test.go

@@ -1,60 +0,0 @@
-package git
-
-import (
-	"bytes"
-	"testing"
-)
-
-func TestMempack(t *testing.T) {
-	t.Parallel()
-
-	odb, err := NewOdb()
-	checkFatal(t, err)
-
-	repo, err := NewRepositoryWrapOdb(odb)
-	checkFatal(t, err)
-
-	mempack, err := NewMempack(odb)
-	checkFatal(t, err)
-
-	id, err := odb.Write([]byte("hello, world!"), ObjectBlob)
-	checkFatal(t, err)
-
-	expectedId, err := NewOid("30f51a3fba5274d53522d0f19748456974647b4f")
-	checkFatal(t, err)
-	if !expectedId.Equal(id) {
-		t.Errorf("mismatched id. expected %v, got %v", expectedId.String(), id.String())
-	}
-
-	// The object should be available from the odb.
-	{
-		obj, err := odb.Read(expectedId)
-		checkFatal(t, err)
-		defer obj.Free()
-	}
-
-	data, err := mempack.Dump(repo)
-	checkFatal(t, err)
-
-	expectedData := []byte{
-		0x50, 0x41, 0x43, 0x4b, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00,
-		0x02, 0x9d, 0x08, 0x82, 0x3b, 0xd8, 0xa8, 0xea, 0xb5, 0x10, 0xad, 0x6a,
-		0xc7, 0x5c, 0x82, 0x3c, 0xfd, 0x3e, 0xd3, 0x1e,
-	}
-	if !bytes.Equal(expectedData, data) {
-		t.Errorf("mismatched mempack data. expected %v, got %v", expectedData, data)
-	}
-
-	mempack.Reset()
-
-	// After the reset, the object should now be unavailable.
-	{
-		obj, err := odb.Read(expectedId)
-		if err == nil {
-			t.Errorf("object %s unexpectedly found", obj.Id().String())
-			obj.Free()
-		} else if !IsErrorCode(err, ErrorCodeNotFound) {
-			t.Errorf("unexpected error %v", err)
-		}
-	}
-}

merge.go

@@ -17,32 +17,23 @@ import (
 )
 
 type AnnotatedCommit struct {
-	doNotCompare
 	ptr *C.git_annotated_commit
-	r   *Repository
 }
 
-func newAnnotatedCommitFromC(ptr *C.git_annotated_commit, r *Repository) *AnnotatedCommit {
-	mh := &AnnotatedCommit{ptr: ptr, r: r}
+func newAnnotatedCommitFromC(c *C.git_annotated_commit) *AnnotatedCommit {
+	mh := &AnnotatedCommit{ptr: c}
 	runtime.SetFinalizer(mh, (*AnnotatedCommit).Free)
 	return mh
 }
 
-func (mh *AnnotatedCommit) Id() *Oid {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := newOidFromC(C.git_annotated_commit_id(mh.ptr))
-	runtime.KeepAlive(mh)
-	return ret
-}
-
 func (mh *AnnotatedCommit) Free() {
 	runtime.SetFinalizer(mh, nil)
 	C.git_annotated_commit_free(mh.ptr)
 }
 
 func (r *Repository) AnnotatedCommitFromFetchHead(branchName string, remoteURL string, oid *Oid) (*AnnotatedCommit, error) {
+	mh := &AnnotatedCommit{}
+
 	cbranchName := C.CString(branchName)
 	defer C.free(unsafe.Pointer(cbranchName))
 
@@ -52,68 +43,40 @@ func (r *Repository) AnnotatedCommitFromFetchHead(branchName string, remoteURL s
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_annotated_commit
-	ret := C.git_annotated_commit_from_fetchhead(&ptr, r.ptr, cbranchName, cremoteURL, oid.toC())
-	runtime.KeepAlive(oid)
+	ret := C.git_annotated_commit_from_fetchhead(&mh.ptr, r.ptr, cbranchName, cremoteURL, oid.toC())
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
-	annotatedCommit := newAnnotatedCommitFromC(ptr, r)
-	runtime.KeepAlive(r)
-	return annotatedCommit, nil
+	runtime.SetFinalizer(mh, (*AnnotatedCommit).Free)
+	return mh, nil
 }
 
 func (r *Repository) LookupAnnotatedCommit(oid *Oid) (*AnnotatedCommit, error) {
+	mh := &AnnotatedCommit{}
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_annotated_commit
-	ret := C.git_annotated_commit_lookup(&ptr, r.ptr, oid.toC())
-	runtime.KeepAlive(oid)
+	ret := C.git_annotated_commit_lookup(&mh.ptr, r.ptr, oid.toC())
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
-	annotatedCommit := newAnnotatedCommitFromC(ptr, r)
-	runtime.KeepAlive(r)
-	return annotatedCommit, nil
+	runtime.SetFinalizer(mh, (*AnnotatedCommit).Free)
+	return mh, nil
 }
 
 func (r *Repository) AnnotatedCommitFromRef(ref *Reference) (*AnnotatedCommit, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var ptr *C.git_annotated_commit
-	ret := C.git_annotated_commit_from_ref(&ptr, r.ptr, ref.ptr)
-	runtime.KeepAlive(r)
-	runtime.KeepAlive(ref)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	annotatedCommit := newAnnotatedCommitFromC(ptr, r)
-	runtime.KeepAlive(r)
-	return annotatedCommit, nil
-}
-
-func (r *Repository) AnnotatedCommitFromRevspec(spec string) (*AnnotatedCommit, error) {
-	crevspec := C.CString(spec)
-	defer C.free(unsafe.Pointer(crevspec))
+	mh := &AnnotatedCommit{}
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_annotated_commit
-	ret := C.git_annotated_commit_from_revspec(&ptr, r.ptr, crevspec)
-	runtime.KeepAlive(r)
+	ret := C.git_annotated_commit_from_ref(&mh.ptr, r.ptr, ref.ptr)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
-	annotatedCommit := newAnnotatedCommitFromC(ptr, r)
-	runtime.KeepAlive(r)
-	return annotatedCommit, nil
+	runtime.SetFinalizer(mh, (*AnnotatedCommit).Free)
+	return mh, nil
 }
 
 type MergeTreeFlag int
@@ -127,22 +90,14 @@ const (
 	// continue resolving conflicts.  The merge operation will fail with
 	// GIT_EMERGECONFLICT and no index will be returned.
 	MergeTreeFailOnConflict MergeTreeFlag = C.GIT_MERGE_FAIL_ON_CONFLICT
-	// MergeTreeSkipREUC specifies not to write the REUC extension on the
-	// generated index.
-	MergeTreeSkipREUC MergeTreeFlag = C.GIT_MERGE_SKIP_REUC
-	// MergeTreeNoRecursive specifies not to build a recursive merge base (by
-	// merging the multiple merge bases) if the commits being merged have
-	// multiple merge bases. Instead, the first base is used.
-	// This flag provides a similar merge base to `git-merge-resolve`.
-	MergeTreeNoRecursive MergeTreeFlag = C.GIT_MERGE_NO_RECURSIVE
 )
 
 type MergeOptions struct {
+	Version   uint
 	TreeFlags MergeTreeFlag
 
 	RenameThreshold uint
 	TargetLimit     uint
-	RecursionLimit  uint
 	FileFavor       MergeFileFavor
 
 	//TODO: Diff similarity metric
@@ -150,10 +105,10 @@ type MergeOptions struct {
 
 func mergeOptionsFromC(opts *C.git_merge_options) MergeOptions {
 	return MergeOptions{
+		Version:         uint(opts.version),
 		TreeFlags:       MergeTreeFlag(opts.flags),
 		RenameThreshold: uint(opts.rename_threshold),
 		TargetLimit:     uint(opts.target_limit),
-		RecursionLimit:  uint(opts.recursion_limit),
 		FileFavor:       MergeFileFavor(opts.file_favor),
 	}
 }
@@ -164,27 +119,24 @@ func DefaultMergeOptions() (MergeOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_merge_options_init(&opts, C.GIT_MERGE_OPTIONS_VERSION)
+	ecode := C.git_merge_init_options(&opts, C.GIT_MERGE_OPTIONS_VERSION)
 	if ecode < 0 {
 		return MergeOptions{}, MakeGitError(ecode)
 	}
 	return mergeOptionsFromC(&opts), nil
 }
 
-func populateMergeOptions(copts *C.git_merge_options, opts *MergeOptions) *C.git_merge_options {
-	C.git_merge_options_init(copts, C.GIT_MERGE_OPTIONS_VERSION)
-	if opts == nil {
+func (mo *MergeOptions) toC() *C.git_merge_options {
+	if mo == nil {
 		return nil
 	}
-	copts.flags = C.uint32_t(opts.TreeFlags)
-	copts.rename_threshold = C.uint(opts.RenameThreshold)
-	copts.target_limit = C.uint(opts.TargetLimit)
-	copts.recursion_limit = C.uint(opts.RecursionLimit)
-	copts.file_favor = C.git_merge_file_favor_t(opts.FileFavor)
-	return copts
-}
-
-func freeMergeOptions(copts *C.git_merge_options) {
+	return &C.git_merge_options{
+		version:          C.uint(mo.Version),
+		flags:            C.git_merge_flag_t(mo.TreeFlags),
+		rename_threshold: C.uint(mo.RenameThreshold),
+		target_limit:     C.uint(mo.TargetLimit),
+		file_favor:       C.git_merge_file_favor_t(mo.FileFavor),
+	}
 }
 
 type MergeFileFavor int
@@ -196,28 +148,22 @@ const (
 	MergeFileFavorUnion  MergeFileFavor = C.GIT_MERGE_FILE_FAVOR_UNION
 )
 
-func (r *Repository) Merge(theirHeads []*AnnotatedCommit, mergeOptions *MergeOptions, checkoutOptions *CheckoutOptions) error {
+func (r *Repository) Merge(theirHeads []*AnnotatedCommit, mergeOptions *MergeOptions, checkoutOptions *CheckoutOpts) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	cMergeOpts := populateMergeOptions(&C.git_merge_options{}, mergeOptions)
-	defer freeMergeOptions(cMergeOpts)
-	cCheckoutOptions := populateCheckoutOptions(&C.git_checkout_options{}, checkoutOptions, &err)
-	defer freeCheckoutOptions(cCheckoutOptions)
+	cMergeOpts := mergeOptions.toC()
+	cCheckoutOpts := checkoutOptions.toC()
+	defer freeCheckoutOpts(cCheckoutOpts)
 
 	gmerge_head_array := make([]*C.git_annotated_commit, len(theirHeads))
 	for i := 0; i < len(theirHeads); i++ {
 		gmerge_head_array[i] = theirHeads[i].ptr
 	}
 	ptr := unsafe.Pointer(&gmerge_head_array[0])
-	ret := C.git_merge(r.ptr, (**C.git_annotated_commit)(ptr), C.size_t(len(theirHeads)), cMergeOpts, cCheckoutOptions)
-	runtime.KeepAlive(theirHeads)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
-		return MakeGitError(ret)
+	err := C.git_merge(r.ptr, (**C.git_annotated_commit)(ptr), C.size_t(len(theirHeads)), cMergeOpts, cCheckoutOpts)
+	if err < 0 {
+		return MakeGitError(err)
 	}
 	return nil
 }
@@ -255,7 +201,6 @@ func (r *Repository) MergeAnalysis(theirHeads []*AnnotatedCommit) (MergeAnalysis
 	var analysis C.git_merge_analysis_t
 	var preference C.git_merge_preference_t
 	err := C.git_merge_analysis(&analysis, &preference, r.ptr, (**C.git_annotated_commit)(ptr), C.size_t(len(theirHeads)))
-	runtime.KeepAlive(theirHeads)
 	if err < 0 {
 		return MergeAnalysisNone, MergePreferenceNone, MakeGitError(err)
 	}
@@ -267,41 +212,35 @@ func (r *Repository) MergeCommits(ours *Commit, theirs *Commit, options *MergeOp
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	copts := populateMergeOptions(&C.git_merge_options{}, options)
-	defer freeMergeOptions(copts)
+	copts := options.toC()
 
-	var ptr *C.git_index
-	ret := C.git_merge_commits(&ptr, r.ptr, ours.cast_ptr, theirs.cast_ptr, copts)
-	runtime.KeepAlive(ours)
-	runtime.KeepAlive(theirs)
+	idx := &Index{}
+
+	ret := C.git_merge_commits(&idx.ptr, r.ptr, ours.cast_ptr, theirs.cast_ptr, copts)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
-	return newIndexFromC(ptr, r), nil
+	runtime.SetFinalizer(idx, (*Index).Free)
+	return idx, nil
 }
 
 func (r *Repository) MergeTrees(ancestor *Tree, ours *Tree, theirs *Tree, options *MergeOptions) (*Index, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	copts := populateMergeOptions(&C.git_merge_options{}, options)
-	defer freeMergeOptions(copts)
+	copts := options.toC()
 
+	idx := &Index{}
 	var ancestor_ptr *C.git_tree
 	if ancestor != nil {
 		ancestor_ptr = ancestor.cast_ptr
 	}
-	var ptr *C.git_index
-	ret := C.git_merge_trees(&ptr, r.ptr, ancestor_ptr, ours.cast_ptr, theirs.cast_ptr, copts)
-	runtime.KeepAlive(ancestor)
-	runtime.KeepAlive(ours)
-	runtime.KeepAlive(theirs)
+	ret := C.git_merge_trees(&idx.ptr, r.ptr, ancestor_ptr, ours.cast_ptr, theirs.cast_ptr, copts)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
-	return newIndexFromC(ptr, r), nil
+	runtime.SetFinalizer(idx, (*Index).Free)
+	return idx, nil
 }
 
 func (r *Repository) MergeBase(one *Oid, two *Oid) (*Oid, error) {
@@ -310,9 +249,6 @@ func (r *Repository) MergeBase(one *Oid, two *Oid) (*Oid, error) {
 
 	var oid C.git_oid
 	ret := C.git_merge_base(&oid, r.ptr, one.toC(), two.toC())
-	runtime.KeepAlive(one)
-	runtime.KeepAlive(two)
-	runtime.KeepAlive(r)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -329,10 +265,8 @@ func (r *Repository) MergeBases(one, two *Oid) ([]*Oid, error) {
 
 	var coids C.git_oidarray
 	ret := C.git_merge_bases(&coids, r.ptr, one.toC(), two.toC())
-	runtime.KeepAlive(one)
-	runtime.KeepAlive(two)
 	if ret < 0 {
-		return nil, MakeGitError(ret)
+		return make([]*Oid, 0), MakeGitError(ret)
 	}
 
 	oids := make([]*Oid, coids.count)
@@ -351,86 +285,15 @@ func (r *Repository) MergeBases(one, two *Oid) ([]*Oid, error) {
 	return oids, nil
 }
 
-// MergeBaseMany finds a merge base given a list of commits.
-func (r *Repository) MergeBaseMany(oids []*Oid) (*Oid, error) {
-	coids := make([]C.git_oid, len(oids))
-	for i := 0; i < len(oids); i++ {
-		coids[i] = *oids[i].toC()
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var oid C.git_oid
-	ret := C.git_merge_base_many(&oid, r.ptr, C.size_t(len(oids)), &coids[0])
-	runtime.KeepAlive(r)
-	runtime.KeepAlive(coids)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	return newOidFromC(&oid), nil
-}
-
-// MergeBasesMany finds all merge bases given a list of commits.
-func (r *Repository) MergeBasesMany(oids []*Oid) ([]*Oid, error) {
-	inCoids := make([]C.git_oid, len(oids))
-	for i := 0; i < len(oids); i++ {
-		inCoids[i] = *oids[i].toC()
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var outCoids C.git_oidarray
-	ret := C.git_merge_bases_many(&outCoids, r.ptr, C.size_t(len(oids)), &inCoids[0])
-	runtime.KeepAlive(r)
-	runtime.KeepAlive(inCoids)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	outOids := make([]*Oid, outCoids.count)
-	hdr := reflect.SliceHeader{
-		Data: uintptr(unsafe.Pointer(outCoids.ids)),
-		Len:  int(outCoids.count),
-		Cap:  int(outCoids.count),
-	}
-	goSlice := *(*[]C.git_oid)(unsafe.Pointer(&hdr))
-
-	for i, cid := range goSlice {
-		outOids[i] = newOidFromC(&cid)
-	}
-
-	return outOids, nil
-}
-
-// MergeBaseOctopus finds a merge base in preparation for an octopus merge.
-func (r *Repository) MergeBaseOctopus(oids []*Oid) (*Oid, error) {
-	coids := make([]C.git_oid, len(oids))
-	for i := 0; i < len(oids); i++ {
-		coids[i] = *oids[i].toC()
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var oid C.git_oid
-	ret := C.git_merge_base_octopus(&oid, r.ptr, C.size_t(len(oids)), &coids[0])
-	runtime.KeepAlive(r)
-	runtime.KeepAlive(coids)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	return newOidFromC(&oid), nil
-}
+//TODO: int git_merge_base_many(git_oid *out, git_repository *repo, size_t length, const git_oid input_array[]);
+//TODO: GIT_EXTERN(int) git_merge_base_octopus(git_oid *out,git_repository *repo,size_t length,const git_oid input_array[]);
 
 type MergeFileResult struct {
-	doNotCompare
-	ptr           *C.git_merge_file_result
 	Automergeable bool
 	Path          string
 	Mode          uint
 	Contents      []byte
+	ptr           *C.git_merge_file_result
 }
 
 func newMergeFileResultFromC(c *C.git_merge_file_result) *MergeFileResult {
@@ -470,29 +333,9 @@ type MergeFileFlags int
 const (
 	MergeFileDefault MergeFileFlags = C.GIT_MERGE_FILE_DEFAULT
 
-	// Create standard conflicted merge files
-	MergeFileStyleMerge MergeFileFlags = C.GIT_MERGE_FILE_STYLE_MERGE
-
-	// Create diff3-style files
-	MergeFileStyleDiff MergeFileFlags = C.GIT_MERGE_FILE_STYLE_DIFF3
-
-	// Condense non-alphanumeric regions for simplified diff file
+	MergeFileStyleMerge         MergeFileFlags = C.GIT_MERGE_FILE_STYLE_MERGE
+	MergeFileStyleDiff          MergeFileFlags = C.GIT_MERGE_FILE_STYLE_DIFF3
 	MergeFileStyleSimplifyAlnum MergeFileFlags = C.GIT_MERGE_FILE_SIMPLIFY_ALNUM
-
-	// Ignore all whitespace
-	MergeFileIgnoreWhitespace MergeFileFlags = C.GIT_MERGE_FILE_IGNORE_WHITESPACE
-
-	// Ignore changes in amount of whitespace
-	MergeFileIgnoreWhitespaceChange MergeFileFlags = C.GIT_MERGE_FILE_IGNORE_WHITESPACE_CHANGE
-
-	// Ignore whitespace at end of line
-	MergeFileIgnoreWhitespaceEOL MergeFileFlags = C.GIT_MERGE_FILE_IGNORE_WHITESPACE_EOL
-
-	// Use the "patience diff" algorithm
-	MergeFileDiffPatience MergeFileFlags = C.GIT_MERGE_FILE_DIFF_PATIENCE
-
-	// Take extra time to find minimal diff
-	MergeFileDiffMinimal MergeFileFlags = C.GIT_MERGE_FILE_DIFF_MINIMAL
 )
 
 type MergeFileOptions struct {
@@ -501,7 +344,6 @@ type MergeFileOptions struct {
 	TheirLabel    string
 	Favor         MergeFileFavor
 	Flags         MergeFileFlags
-	MarkerSize    uint16
 }
 
 func mergeFileOptionsFromC(c C.git_merge_file_options) MergeFileOptions {
@@ -511,32 +353,21 @@ func mergeFileOptionsFromC(c C.git_merge_file_options) MergeFileOptions {
 		TheirLabel:    C.GoString(c.their_label),
 		Favor:         MergeFileFavor(c.favor),
 		Flags:         MergeFileFlags(c.flags),
-		MarkerSize:    uint16(c.marker_size),
 	}
 }
 
-func populateMergeFileOptions(copts *C.git_merge_file_options, opts *MergeFileOptions) *C.git_merge_file_options {
-	C.git_merge_file_options_init(copts, C.GIT_MERGE_FILE_OPTIONS_VERSION)
-	if opts == nil {
-		return nil
-	}
-
-	copts.ancestor_label = C.CString(opts.AncestorLabel)
-	copts.our_label = C.CString(opts.OurLabel)
-	copts.their_label = C.CString(opts.TheirLabel)
-	copts.favor = C.git_merge_file_favor_t(opts.Favor)
-	copts.flags = C.uint32_t(opts.Flags)
-	copts.marker_size = C.ushort(opts.MarkerSize)
-	return copts
+func populateCMergeFileOptions(c *C.git_merge_file_options, options MergeFileOptions) {
+	c.ancestor_label = C.CString(options.AncestorLabel)
+	c.our_label = C.CString(options.OurLabel)
+	c.their_label = C.CString(options.TheirLabel)
+	c.favor = C.git_merge_file_favor_t(options.Favor)
+	c.flags = C.git_merge_file_flag_t(options.Flags)
 }
 
-func freeMergeFileOptions(copts *C.git_merge_file_options) {
-	if copts == nil {
-		return
-	}
-	C.free(unsafe.Pointer(copts.ancestor_label))
-	C.free(unsafe.Pointer(copts.our_label))
-	C.free(unsafe.Pointer(copts.their_label))
+func freeCMergeFileOptions(c *C.git_merge_file_options) {
+	C.free(unsafe.Pointer(c.ancestor_label))
+	C.free(unsafe.Pointer(c.our_label))
+	C.free(unsafe.Pointer(c.their_label))
 }
 
 func MergeFile(ancestor MergeFileInput, ours MergeFileInput, theirs MergeFileInput, options *MergeFileOptions) (*MergeFileResult, error) {
@@ -565,12 +396,12 @@ func MergeFile(ancestor MergeFileInput, ours MergeFileInput, theirs MergeFileInp
 	var copts *C.git_merge_file_options
 	if options != nil {
 		copts = &C.git_merge_file_options{}
-		ecode := C.git_merge_file_options_init(copts, C.GIT_MERGE_FILE_OPTIONS_VERSION)
+		ecode := C.git_merge_file_init_options(copts, C.GIT_MERGE_FILE_OPTIONS_VERSION)
 		if ecode < 0 {
 			return nil, MakeGitError(ecode)
 		}
-		populateMergeFileOptions(copts, options)
-		defer freeMergeFileOptions(copts)
+		populateCMergeFileOptions(copts, *options)
+		defer freeCMergeFileOptions(copts)
 	}
 
 	runtime.LockOSThread()
@@ -582,9 +413,6 @@ func MergeFile(ancestor MergeFileInput, ours MergeFileInput, theirs MergeFileInp
 		(*C.char)(unsafe.Pointer(oursContents)), C.size_t(len(ours.Contents)), oursPath, C.uint(ours.Mode),
 		(*C.char)(unsafe.Pointer(theirsContents)), C.size_t(len(theirs.Contents)), theirsPath, C.uint(theirs.Mode),
 		copts)
-	runtime.KeepAlive(ancestor)
-	runtime.KeepAlive(ours)
-	runtime.KeepAlive(theirs)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}

merge_test.go

@@ -5,22 +5,6 @@ import (
 	"time"
 )
 
-func TestAnnotatedCommitFromRevspec(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-
-	mergeHead, err := repo.AnnotatedCommitFromRevspec("refs/heads/master")
-	checkFatal(t, err)
-
-	expectedId := "473bf778b67b6d53e2ab289e0f1a2e8addef2fc2"
-	if mergeHead.Id().String() != expectedId {
-		t.Errorf("mergeHead.Id() = %v, want %v", mergeHead.Id(), expectedId)
-	}
-}
-
 func TestMergeWithSelf(t *testing.T) {
 	t.Parallel()
 	repo := createTestRepo(t)
@@ -34,23 +18,10 @@ func TestMergeWithSelf(t *testing.T) {
 	mergeHead, err := repo.AnnotatedCommitFromRef(master)
 	checkFatal(t, err)
 
-	expectedId := "473bf778b67b6d53e2ab289e0f1a2e8addef2fc2"
-	if mergeHead.Id().String() != expectedId {
-		t.Errorf("mergeHead.Id() = %v, want %v", mergeHead.Id(), expectedId)
-	}
-
 	mergeHeads := make([]*AnnotatedCommit, 1)
 	mergeHeads[0] = mergeHead
 	err = repo.Merge(mergeHeads, nil, nil)
 	checkFatal(t, err)
-
-	mergeMessage, err := repo.Message()
-	checkFatal(t, err)
-
-	expectedMessage := "Merge branch 'master'\n"
-	if mergeMessage != expectedMessage {
-		t.Errorf("merge Message = %v, want %v", mergeMessage, expectedMessage)
-	}
 }
 
 func TestMergeAnalysisWithSelf(t *testing.T) {
@@ -117,7 +88,7 @@ func TestMergeTreesWithoutAncestor(t *testing.T) {
 	if !index.HasConflicts() {
 		t.Fatal("expected conflicts in the index")
 	}
-	_, err = index.Conflict("README")
+	_, err = index.GetConflict("README")
 	checkFatal(t, err)
 
 }
@@ -171,15 +142,6 @@ func TestMergeBase(t *testing.T) {
 	if mergeBase.Cmp(commitAId) != 0 {
 		t.Fatalf("unexpected merge base")
 	}
-}
-
-func TestMergeBases(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	commitAId, _ := seedTestRepo(t, repo)
-	commitBId, _ := appendCommit(t, repo)
 
 	mergeBases, err := repo.MergeBases(commitAId, commitBId)
 	checkFatal(t, err)
@@ -193,58 +155,6 @@ func TestMergeBases(t *testing.T) {
 	}
 }
 
-func TestMergeBaseMany(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	commitAId, _ := seedTestRepo(t, repo)
-	commitBId, _ := appendCommit(t, repo)
-
-	mergeBase, err := repo.MergeBaseMany([]*Oid{commitAId, commitBId})
-	checkFatal(t, err)
-
-	if mergeBase.Cmp(commitAId) != 0 {
-		t.Fatalf("unexpected merge base")
-	}
-}
-
-func TestMergeBasesMany(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	commitAId, _ := seedTestRepo(t, repo)
-	commitBId, _ := appendCommit(t, repo)
-
-	mergeBases, err := repo.MergeBasesMany([]*Oid{commitAId, commitBId})
-	checkFatal(t, err)
-
-	if len(mergeBases) != 1 {
-		t.Fatalf("expected merge bases len to be 1, got %v", len(mergeBases))
-	}
-
-	if mergeBases[0].Cmp(commitAId) != 0 {
-		t.Fatalf("unexpected merge base")
-	}
-}
-
-func TestMergeBaseOctopus(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	commitAId, _ := seedTestRepo(t, repo)
-	commitBId, _ := appendCommit(t, repo)
-
-	mergeBase, err := repo.MergeBaseOctopus([]*Oid{commitAId, commitBId})
-	checkFatal(t, err)
-
-	if mergeBase.Cmp(commitAId) != 0 {
-		t.Fatalf("unexpected merge base")
-	}
-}
-
 func compareBytes(t *testing.T, expected, actual []byte) {
 	for i, v := range expected {
 		if actual[i] != v {

message.go

@@ -1,42 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-*/
-import "C"
-import (
-	"runtime"
-	"unsafe"
-)
-
-// Trailer represents a single git message trailer.
-type Trailer struct {
-	Key   string
-	Value string
-}
-
-// MessageTrailers parses trailers out of a message, returning a slice of
-// Trailer structs. Trailers are key/value pairs in the last paragraph of a
-// message, not including any patches or conflicts that may be present.
-func MessageTrailers(message string) ([]Trailer, error) {
-	var trailersC C.git_message_trailer_array
-
-	messageC := C.CString(message)
-	defer C.free(unsafe.Pointer(messageC))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_message_trailers(&trailersC, messageC)
-	if ecode < 0 {
-		return nil, MakeGitError(ecode)
-	}
-	defer C.git_message_trailer_array_free(&trailersC)
-	trailers := make([]Trailer, trailersC.count)
-	var trailer *C.git_message_trailer
-	for i, p := 0, uintptr(unsafe.Pointer(trailersC.trailers)); i < int(trailersC.count); i, p = i+1, p+unsafe.Sizeof(C.git_message_trailer{}) {
-		trailer = (*C.git_message_trailer)(unsafe.Pointer(p))
-		trailers[i] = Trailer{Key: C.GoString(trailer.key), Value: C.GoString(trailer.value)}
-	}
-	return trailers, nil
-}

message_test.go

@@ -1,42 +0,0 @@
-package git
-
-import (
-	"fmt"
-	"reflect"
-	"testing"
-)
-
-func TestTrailers(t *testing.T) {
-	t.Parallel()
-	tests := []struct {
-		input    string
-		expected []Trailer
-	}{
-		{
-			"commit with zero trailers\n",
-			[]Trailer{},
-		},
-		{
-			"commit with one trailer\n\nCo-authored-by: Alice <alice@example.com>\n",
-			[]Trailer{
-				Trailer{Key: "Co-authored-by", Value: "Alice <alice@example.com>"},
-			},
-		},
-		{
-			"commit with two trailers\n\nCo-authored-by: Alice <alice@example.com>\nSigned-off-by: Bob <bob@example.com>\n",
-			[]Trailer{
-				Trailer{Key: "Co-authored-by", Value: "Alice <alice@example.com>"},
-				Trailer{Key: "Signed-off-by", Value: "Bob <bob@example.com>"}},
-		},
-	}
-	for _, test := range tests {
-		fmt.Printf("%s", test.input)
-		actual, err := MessageTrailers(test.input)
-		if err != nil {
-			t.Errorf("Trailers returned an unexpected error: %v", err)
-		}
-		if !reflect.DeepEqual(test.expected, actual) {
-			t.Errorf("expecting %#v\ngot %#v", test.expected, actual)
-		}
-	}
-}

note.go

@@ -13,7 +13,6 @@ import (
 // This object represents the possible operations which can be
 // performed on the collection of notes for a repository.
 type NoteCollection struct {
-	doNotCompare
 	repo *Repository
 }
 
@@ -53,8 +52,7 @@ func (c *NoteCollection) Create(
 	ret := C.git_note_create(
 		oid.toC(), c.repo.ptr, cref, authorSig,
 		committerSig, id.toC(), cnote, cbool(force))
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(id)
+
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -71,18 +69,17 @@ func (c *NoteCollection) Read(ref string, id *Oid) (*Note, error) {
 		defer C.free(unsafe.Pointer(cref))
 	}
 
+	note := new(Note)
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_note
-	ret := C.git_note_read(&ptr, c.repo.ptr, cref, id.toC())
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(id)
-	if ret < 0 {
+	if ret := C.git_note_read(&note.ptr, c.repo.ptr, cref, id.toC()); ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
-	return newNoteFromC(ptr, c.repo), nil
+	runtime.SetFinalizer(note, (*Note).Free)
+	return note, nil
 }
 
 // Remove removes the note for an object
@@ -111,8 +108,6 @@ func (c *NoteCollection) Remove(ref string, author, committer *Signature, id *Oi
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_note_remove(c.repo.ptr, cref, authorSig, committerSig, id.toC())
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(id)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -126,29 +121,19 @@ func (c *NoteCollection) DefaultRef() (string, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_note_default_ref(&buf, c.repo.ptr)
-	runtime.KeepAlive(c)
-	if ecode < 0 {
-		return "", MakeGitError(ecode)
+	if ret := C.git_note_default_ref(&buf, c.repo.ptr); ret < 0 {
+		return "", MakeGitError(ret)
 	}
 
 	ret := C.GoString(buf.ptr)
-	C.git_buf_dispose(&buf)
+	C.git_buf_free(&buf)
 
 	return ret, nil
 }
 
 // Note
 type Note struct {
-	doNotCompare
 	ptr *C.git_note
-	r   *Repository
-}
-
-func newNoteFromC(ptr *C.git_note, r *Repository) *Note {
-	note := &Note{ptr: ptr, r: r}
-	runtime.SetFinalizer(note, (*Note).Free)
-	return note
 }
 
 // Free frees a git_note object
@@ -171,29 +156,23 @@ func (n *Note) Author() *Signature {
 // Id returns the note object's id
 func (n *Note) Id() *Oid {
 	ptr := C.git_note_id(n.ptr)
-	runtime.KeepAlive(n)
 	return newOidFromC(ptr)
 }
 
 // Committer returns the signature of the note committer
 func (n *Note) Committer() *Signature {
 	ptr := C.git_note_committer(n.ptr)
-	runtime.KeepAlive(n)
 	return newSignatureFromC(ptr)
 }
 
 // Message returns the note message
 func (n *Note) Message() string {
-	ret := C.GoString(C.git_note_message(n.ptr))
-	runtime.KeepAlive(n)
-	return ret
+	return C.GoString(C.git_note_message(n.ptr))
 }
 
 // NoteIterator
 type NoteIterator struct {
-	doNotCompare
 	ptr *C.git_note_iterator
-	r   *Repository
 }
 
 // NewNoteIterator creates a new iterator for notes
@@ -211,13 +190,11 @@ func (repo *Repository) NewNoteIterator(ref string) (*NoteIterator, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_note_iterator_new(&ptr, repo.ptr, cref)
-	runtime.KeepAlive(repo)
-	if ret < 0 {
+	if ret := C.git_note_iterator_new(&ptr, repo.ptr, cref); ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
-	iter := &NoteIterator{ptr: ptr, r: repo}
+	iter := &NoteIterator{ptr: ptr}
 	runtime.SetFinalizer(iter, (*NoteIterator).Free)
 	return iter, nil
 }
@@ -236,11 +213,7 @@ func (it *NoteIterator) Next() (noteId, annotatedId *Oid, err error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_note_next(noteId.toC(), annotatedId.toC(), it.ptr)
-	runtime.KeepAlive(noteId)
-	runtime.KeepAlive(annotatedId)
-	runtime.KeepAlive(it)
-	if ret < 0 {
+	if ret := C.git_note_next(noteId.toC(), annotatedId.toC(), it.ptr); ret < 0 {
 		err = MakeGitError(ret)
 	}
 	return

note_test.go

@@ -49,7 +49,7 @@ func TestNoteIterator(t *testing.T) {
 	for {
 		noteId, commitId, err := iter.Next()
 		if err != nil {
-			if !IsErrorCode(err, ErrorCodeIterOver) {
+			if !IsErrorCode(err, ErrIterOver) {
 				checkFatal(t, err)
 			}
 			break

object.go

@@ -13,31 +13,25 @@ import (
 type ObjectType int
 
 const (
-	ObjectAny     ObjectType = C.GIT_OBJECT_ANY
-	ObjectInvalid ObjectType = C.GIT_OBJECT_INVALID
-	ObjectCommit  ObjectType = C.GIT_OBJECT_COMMIT
-	ObjectTree    ObjectType = C.GIT_OBJECT_TREE
-	ObjectBlob    ObjectType = C.GIT_OBJECT_BLOB
-	ObjectTag     ObjectType = C.GIT_OBJECT_TAG
+	ObjectAny    ObjectType = C.GIT_OBJ_ANY
+	ObjectBad    ObjectType = C.GIT_OBJ_BAD
+	ObjectCommit ObjectType = C.GIT_OBJ_COMMIT
+	ObjectTree   ObjectType = C.GIT_OBJ_TREE
+	ObjectBlob   ObjectType = C.GIT_OBJ_BLOB
+	ObjectTag    ObjectType = C.GIT_OBJ_TAG
 )
 
 type Object struct {
-	doNotCompare
 	ptr  *C.git_object
 	repo *Repository
 }
 
-// Objecter lets us accept any kind of Git object in functions.
-type Objecter interface {
-	AsObject() *Object
-}
-
 func (t ObjectType) String() string {
 	switch t {
 	case ObjectAny:
 		return "Any"
-	case ObjectInvalid:
-		return "Invalid"
+	case ObjectBad:
+		return "Bad"
 	case ObjectCommit:
 		return "Commit"
 	case ObjectTree:
@@ -52,40 +46,19 @@ func (t ObjectType) String() string {
 }
 
 func (o *Object) Id() *Oid {
-	ret := newOidFromC(C.git_object_id(o.ptr))
-	runtime.KeepAlive(o)
-	return ret
-}
-
-func (o *Object) ShortId() (string, error) {
-	resultBuf := C.git_buf{}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_object_short_id(&resultBuf, o.ptr)
-	runtime.KeepAlive(o)
-	if ecode < 0 {
-		return "", MakeGitError(ecode)
-	}
-	defer C.git_buf_dispose(&resultBuf)
-	return C.GoString(resultBuf.ptr), nil
+	return newOidFromC(C.git_object_id(o.ptr))
 }
 
 func (o *Object) Type() ObjectType {
-	ret := ObjectType(C.git_object_type(o.ptr))
-	runtime.KeepAlive(o)
-	return ret
+	return ObjectType(C.git_object_type(o.ptr))
 }
 
-// Owner returns a weak reference to the repository which owns this object.
-// This won't keep the underlying repository alive, but it should still be
-// Freed.
+// Owner returns a weak reference to the repository which owns this
+// object. This won't keep the underlying repository alive.
 func (o *Object) Owner() *Repository {
-	repo := newRepositoryFromC(C.git_object_owner(o.ptr))
-	runtime.KeepAlive(o)
-	repo.weak = true
-	return repo
+	return &Repository{
+		ptr: C.git_object_owner(o.ptr),
+	}
 }
 
 func dupObject(obj *Object, kind ObjectType) (*C.git_object, error) {
@@ -98,9 +71,7 @@ func dupObject(obj *Object, kind ObjectType) (*C.git_object, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	err := C.git_object_dup(&cobj, obj.ptr)
-	runtime.KeepAlive(obj)
-	if err < 0 {
+	if err := C.git_object_dup(&cobj, obj.ptr); err < 0 {
 		return nil, MakeGitError(err)
 	}
 
@@ -202,13 +173,13 @@ func (o *Object) Free() {
 
 // Peel recursively peels an object until an object of the specified type is met.
 //
-// If the query cannot be satisfied due to the object model, ErrorCodeInvalidSpec
+// If the query cannot be satisfied due to the object model, ErrInvalidSpec
 // will be returned (e.g. trying to peel a blob to a tree).
 //
 // If you pass ObjectAny as the target type, then the object will be peeled
 // until the type changes. A tag will be peeled until the referenced object
 // is no longer a tag, and a commit will be peeled to a tree. Any other object
-// type will return ErrorCodeInvalidSpec.
+// type will return ErrInvalidSpec.
 //
 // If peeling a tag we discover an object which cannot be peeled to the target
 // type due to the object model, an error will be returned.
@@ -218,9 +189,7 @@ func (o *Object) Peel(t ObjectType) (*Object, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	err := C.git_object_peel(&cobj, o.ptr, C.git_object_t(t))
-	runtime.KeepAlive(o)
-	if err < 0 {
+	if err := C.git_object_peel(&cobj, o.ptr, C.git_otype(t)); err < 0 {
 		return nil, MakeGitError(err)
 	}
 

object_test.go

@@ -1,7 +1,6 @@
 package git
 
 import (
-	"strings"
 	"testing"
 )
 
@@ -106,32 +105,6 @@ func TestObjectOwner(t *testing.T) {
 	checkOwner(t, repo, tree.Object)
 }
 
-func checkShortId(t *testing.T, Id, shortId string) {
-	if len(shortId) < 7 || len(shortId) >= len(Id) {
-		t.Fatalf("bad shortId length %d", len(shortId))
-	}
-
-	if !strings.HasPrefix(Id, shortId) {
-		t.Fatalf("bad shortId, should be prefix of %s, but is %s\n", Id, shortId)
-	}
-}
-
-func TestObjectShortId(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	commitId, _ := seedTestRepo(t, repo)
-
-	commit, err := repo.LookupCommit(commitId)
-	checkFatal(t, err)
-
-	shortId, err := commit.ShortId()
-	checkFatal(t, err)
-
-	checkShortId(t, commitId.String(), shortId)
-}
-
 func TestObjectPeel(t *testing.T) {
 	t.Parallel()
 	repo := createTestRepo(t)
@@ -153,8 +126,8 @@ func TestObjectPeel(t *testing.T) {
 
 	obj, err = commit.Peel(ObjectTag)
 
-	if !IsErrorCode(err, ErrorCodeInvalidSpec) {
-		t.Fatalf("Wrong error when peeling a commit to a tag, expected ErrorCodeInvalidSpec, have %v", err)
+	if !IsErrorCode(err, ErrInvalidSpec) {
+		t.Fatalf("Wrong error when peeling a commit to a tag, expected ErrInvalidSpec, have %v", err)
 	}
 
 	tree, err := repo.LookupTree(treeID)
@@ -162,8 +135,8 @@ func TestObjectPeel(t *testing.T) {
 
 	obj, err = tree.Peel(ObjectAny)
 
-	if !IsErrorCode(err, ErrorCodeInvalidSpec) {
-		t.Fatalf("Wrong error when peeling a tree, expected ErrorCodeInvalidSpec, have %v", err)
+	if !IsErrorCode(err, ErrInvalidSpec) {
+		t.Fatalf("Wrong error when peeling a tree, expected ErrInvalidSpec, have %v", err)
 	}
 
 	entry := tree.EntryByName("README")
@@ -173,8 +146,8 @@ func TestObjectPeel(t *testing.T) {
 
 	obj, err = blob.Peel(ObjectAny)
 
-	if !IsErrorCode(err, ErrorCodeInvalidSpec) {
-		t.Fatalf("Wrong error when peeling a blob, expected ErrorCodeInvalidSpec, have %v", err)
+	if !IsErrorCode(err, ErrInvalidSpec) {
+		t.Fatalf("Wrong error when peeling a blob, expected ErrInvalidSpec, have %v", err)
 	}
 
 	tagID := createTestTag(t, repo, commit)

odb.go

@@ -3,31 +3,21 @@ package git
 /*
 #include <git2.h>
 
-extern int git_odb_backend_one_pack(git_odb_backend **out, const char *index_file);
-extern int git_odb_backend_loose(git_odb_backend **out, const char *objects_dir, int compression_level, int do_fsync, unsigned int dir_mode, unsigned int file_mode);
 extern int _go_git_odb_foreach(git_odb *db, void *payload);
 extern void _go_git_odb_backend_free(git_odb_backend *backend);
-extern int _go_git_odb_write_pack(git_odb_writepack **out, git_odb *db, void *progress_payload);
-extern int _go_git_odb_writepack_append(git_odb_writepack *writepack, const void *, size_t, git_transfer_progress *);
-extern int _go_git_odb_writepack_commit(git_odb_writepack *writepack, git_transfer_progress *);
-extern void _go_git_odb_writepack_free(git_odb_writepack *writepack);
 */
 import "C"
 import (
-	"io"
-	"os"
 	"reflect"
 	"runtime"
 	"unsafe"
 )
 
 type Odb struct {
-	doNotCompare
 	ptr *C.git_odb
 }
 
 type OdbBackend struct {
-	doNotCompare
 	ptr *C.git_odb_backend
 }
 
@@ -47,29 +37,16 @@ func NewOdb() (odb *Odb, err error) {
 }
 
 func NewOdbBackendFromC(ptr unsafe.Pointer) (backend *OdbBackend) {
-	backend = &OdbBackend{ptr: (*C.git_odb_backend)(ptr)}
+	backend = &OdbBackend{(*C.git_odb_backend)(ptr)}
 	return backend
 }
 
-func (v *Odb) AddAlternate(backend *OdbBackend, priority int) (err error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_odb_add_alternate(v.ptr, backend.ptr, C.int(priority))
-	runtime.KeepAlive(v)
-	if ret < 0 {
-		backend.Free()
-		return MakeGitError(ret)
-	}
-	return nil
-}
-
 func (v *Odb) AddBackend(backend *OdbBackend, priority int) (err error) {
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_odb_add_backend(v.ptr, backend.ptr, C.int(priority))
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		backend.Free()
 		return MakeGitError(ret)
@@ -77,81 +54,38 @@ func (v *Odb) AddBackend(backend *OdbBackend, priority int) (err error) {
 	return nil
 }
 
-func NewOdbBackendOnePack(packfileIndexPath string) (backend *OdbBackend, err error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cstr := C.CString(packfileIndexPath)
-	defer C.free(unsafe.Pointer(cstr))
-
-	var odbOnePack *C.git_odb_backend = nil
-	ret := C.git_odb_backend_one_pack(&odbOnePack, cstr)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	return NewOdbBackendFromC(unsafe.Pointer(odbOnePack)), nil
-}
-
-// NewOdbBackendLoose creates a backend for loose objects.
-func NewOdbBackendLoose(objectsDir string, compressionLevel int, doFsync bool, dirMode os.FileMode, fileMode os.FileMode) (backend *OdbBackend, err error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var odbLoose *C.git_odb_backend = nil
-	var doFsyncInt C.int
-	if doFsync {
-		doFsyncInt = C.int(1)
-	}
-
-	cstr := C.CString(objectsDir)
-	defer C.free(unsafe.Pointer(cstr))
-
-	ret := C.git_odb_backend_loose(&odbLoose, cstr, C.int(compressionLevel), doFsyncInt, C.uint(dirMode), C.uint(fileMode))
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-	return NewOdbBackendFromC(unsafe.Pointer(odbLoose)), nil
-}
-
 func (v *Odb) ReadHeader(oid *Oid) (uint64, ObjectType, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
-
+	
 	var sz C.size_t
-	var cotype C.git_object_t
+	var cotype C.git_otype 
 
 	ret := C.git_odb_read_header(&sz, &cotype, v.ptr, oid.toC())
-	runtime.KeepAlive(v)
 	if ret < 0 {
-		return 0, ObjectInvalid, MakeGitError(ret)
+		return 0, C.GIT_OBJ_BAD, MakeGitError(ret)
 	}
 
 	return uint64(sz), ObjectType(cotype), nil
 }
-
+	
 func (v *Odb) Exists(oid *Oid) bool {
 	ret := C.git_odb_exists(v.ptr, oid.toC())
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(oid)
 	return ret != 0
 }
 
 func (v *Odb) Write(data []byte, otype ObjectType) (oid *Oid, err error) {
 	oid = new(Oid)
+	var cptr unsafe.Pointer
+	if len(data) > 0 {
+		cptr = unsafe.Pointer(&data[0])
+	}
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var size C.size_t
-	if len(data) > 0 {
-		size = C.size_t(len(data))
-	} else {
-		data = []byte{0}
-		size = C.size_t(0)
-	}
+	ret := C.git_odb_write(oid.toC(), v.ptr, cptr, C.size_t(len(data)), C.git_otype(otype))
 
-	ret := C.git_odb_write(oid.toC(), v.ptr, unsafe.Pointer(&data[0]), size, C.git_object_t(otype))
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -166,8 +100,6 @@ func (v *Odb) Read(oid *Oid) (obj *OdbObject, err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_odb_read(&obj.ptr, v.ptr, oid.toC())
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(oid)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -176,60 +108,36 @@ func (v *Odb) Read(oid *Oid) (obj *OdbObject, err error) {
 	return obj, nil
 }
 
-func (odb *Odb) Refresh() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_odb_refresh(odb.ptr)
-	runtime.KeepAlive(odb)
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
-func (odb *Odb) WriteMultiPackIndex() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_odb_write_multi_pack_index(odb.ptr)
-	runtime.KeepAlive(odb)
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
 type OdbForEachCallback func(id *Oid) error
-type odbForEachCallbackData struct {
-	callback    OdbForEachCallback
-	errorTarget *error
+
+type foreachData struct {
+	callback OdbForEachCallback
+	err      error
 }
 
-//export odbForEachCallback
-func odbForEachCallback(id *C.git_oid, handle unsafe.Pointer) C.int {
-	data, ok := pointerHandles.Get(handle).(*odbForEachCallbackData)
+//export odbForEachCb
+func odbForEachCb(id *C.git_oid, handle unsafe.Pointer) int {
+	data, ok := pointerHandles.Get(handle).(*foreachData)
+
 	if !ok {
 		panic("could not retrieve handle")
 	}
 
 	err := data.callback(newOidFromC(id))
 	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+		data.err = err
+		return C.GIT_EUSER
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 func (v *Odb) ForEach(callback OdbForEachCallback) error {
-	var err error
-	data := odbForEachCallbackData{
-		callback:    callback,
-		errorTarget: &err,
+	data := foreachData{
+		callback: callback,
+		err:      nil,
 	}
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
@@ -237,11 +145,9 @@ func (v *Odb) ForEach(callback OdbForEachCallback) error {
 	defer pointerHandles.Untrack(handle)
 
 	ret := C._go_git_odb_foreach(v.ptr, handle)
-	runtime.KeepAlive(v)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
+	if ret == C.GIT_EUSER {
+		return data.err
+	} else if ret < 0 {
 		return MakeGitError(ret)
 	}
 
@@ -251,20 +157,13 @@ func (v *Odb) ForEach(callback OdbForEachCallback) error {
 // Hash determines the object-ID (sha1) of a data buffer.
 func (v *Odb) Hash(data []byte, otype ObjectType) (oid *Oid, err error) {
 	oid = new(Oid)
+	header := (*reflect.SliceHeader)(unsafe.Pointer(&data))
+	ptr := unsafe.Pointer(header.Data)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var size C.size_t
-	if len(data) > 0 {
-		size = C.size_t(len(data))
-	} else {
-		data = []byte{0}
-		size = C.size_t(0)
-	}
-
-	ret := C.git_odb_hash(oid.toC(), unsafe.Pointer(&data[0]), size, C.git_object_t(otype))
-	runtime.KeepAlive(data)
+	ret := C.git_odb_hash(oid.toC(), ptr, C.size_t(header.Len), C.git_otype(otype))
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -275,21 +174,15 @@ func (v *Odb) Hash(data []byte, otype ObjectType) (oid *Oid, err error) {
 // contents of the object.
 func (v *Odb) NewReadStream(id *Oid) (*OdbReadStream, error) {
 	stream := new(OdbReadStream)
-	var ctype C.git_object_t
-	var csize C.size_t
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_odb_open_rstream(&stream.ptr, &csize, &ctype, v.ptr, id.toC())
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(id)
+	ret := C.git_odb_open_rstream(&stream.ptr, v.ptr, id.toC())
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
-	stream.Size = uint64(csize)
-	stream.Type = ObjectType(ctype)
 	runtime.SetFinalizer(stream, (*OdbReadStream).Free)
 	return stream, nil
 }
@@ -303,8 +196,7 @@ func (v *Odb) NewWriteStream(size int64, otype ObjectType) (*OdbWriteStream, err
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_odb_open_wstream(&stream.ptr, v.ptr, C.git_object_size_t(size), C.git_object_t(otype))
-	runtime.KeepAlive(v)
+	ret := C.git_odb_open_wstream(&stream.ptr, v.ptr, C.git_off_t(size), C.git_otype(otype))
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -313,35 +205,11 @@ func (v *Odb) NewWriteStream(size int64, otype ObjectType) (*OdbWriteStream, err
 	return stream, nil
 }
 
-// NewWritePack opens a stream for writing a pack file to the ODB. If the ODB
-// layer understands pack files, then the given packfile will likely be
-// streamed directly to disk (and a corresponding index created). If the ODB
-// layer does not understand pack files, the objects will be stored in whatever
-// format the ODB layer uses.
-func (v *Odb) NewWritePack(callback TransferProgressCallback) (*OdbWritepack, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	writepack := new(OdbWritepack)
-	populateRemoteCallbacks(&writepack.ccallbacks, &RemoteCallbacks{TransferProgressCallback: callback}, nil)
-
-	ret := C._go_git_odb_write_pack(&writepack.ptr, v.ptr, writepack.ccallbacks.payload)
-	runtime.KeepAlive(v)
-	if ret < 0 {
-		untrackCallbacksPayload(&writepack.ccallbacks)
-		return nil, MakeGitError(ret)
-	}
-
-	runtime.SetFinalizer(writepack, (*OdbWritepack).Free)
-	return writepack, nil
-}
-
 func (v *OdbBackend) Free() {
 	C._go_git_odb_backend_free(v.ptr)
 }
 
 type OdbObject struct {
-	doNotCompare
 	ptr *C.git_odb_object
 }
 
@@ -351,25 +219,17 @@ func (v *OdbObject) Free() {
 }
 
 func (object *OdbObject) Id() (oid *Oid) {
-	ret := newOidFromC(C.git_odb_object_id(object.ptr))
-	runtime.KeepAlive(object)
-	return ret
+	return newOidFromC(C.git_odb_object_id(object.ptr))
 }
 
 func (object *OdbObject) Len() (len uint64) {
-	ret := uint64(C.git_odb_object_size(object.ptr))
-	runtime.KeepAlive(object)
-	return ret
+	return uint64(C.git_odb_object_size(object.ptr))
 }
 
 func (object *OdbObject) Type() ObjectType {
-	ret := ObjectType(C.git_odb_object_type(object.ptr))
-	runtime.KeepAlive(object)
-	return ret
+	return ObjectType(C.git_odb_object_type(object.ptr))
 }
 
-// Data returns a slice pointing to the unmanaged object memory. You must make
-// sure the object is referenced for at least as long as the slice is used.
 func (object *OdbObject) Data() (data []byte) {
 	var c_blob unsafe.Pointer = C.git_odb_object_data(object.ptr)
 	var blob []byte
@@ -385,10 +245,7 @@ func (object *OdbObject) Data() (data []byte) {
 }
 
 type OdbReadStream struct {
-	doNotCompare
-	ptr  *C.git_odb_stream
-	Size uint64
-	Type ObjectType
+	ptr *C.git_odb_stream
 }
 
 // Read reads from the stream
@@ -401,13 +258,9 @@ func (stream *OdbReadStream) Read(data []byte) (int, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_odb_stream_read(stream.ptr, ptr, size)
-	runtime.KeepAlive(stream)
 	if ret < 0 {
 		return 0, MakeGitError(ret)
 	}
-	if ret == 0 {
-		return 0, io.EOF
-	}
 
 	header.Len = int(ret)
 
@@ -426,7 +279,6 @@ func (stream *OdbReadStream) Free() {
 }
 
 type OdbWriteStream struct {
-	doNotCompare
 	ptr *C.git_odb_stream
 	Id  Oid
 }
@@ -441,7 +293,6 @@ func (stream *OdbWriteStream) Write(data []byte) (int, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_odb_stream_write(stream.ptr, ptr, size)
-	runtime.KeepAlive(stream)
 	if ret < 0 {
 		return 0, MakeGitError(ret)
 	}
@@ -456,7 +307,6 @@ func (stream *OdbWriteStream) Close() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_odb_stream_finalize_write(stream.Id.toC(), stream.ptr)
-	runtime.KeepAlive(stream)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -468,47 +318,3 @@ func (stream *OdbWriteStream) Free() {
 	runtime.SetFinalizer(stream, nil)
 	C.git_odb_stream_free(stream.ptr)
 }
-
-// OdbWritepack is a stream to write a packfile to the ODB.
-type OdbWritepack struct {
-	doNotCompare
-	ptr        *C.git_odb_writepack
-	stats      C.git_transfer_progress
-	ccallbacks C.git_remote_callbacks
-}
-
-func (writepack *OdbWritepack) Write(data []byte) (int, error) {
-	header := (*reflect.SliceHeader)(unsafe.Pointer(&data))
-	ptr := unsafe.Pointer(header.Data)
-	size := C.size_t(header.Len)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C._go_git_odb_writepack_append(writepack.ptr, ptr, size, &writepack.stats)
-	runtime.KeepAlive(writepack)
-	if ret < 0 {
-		return 0, MakeGitError(ret)
-	}
-
-	return len(data), nil
-}
-
-func (writepack *OdbWritepack) Commit() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C._go_git_odb_writepack_commit(writepack.ptr, &writepack.stats)
-	runtime.KeepAlive(writepack)
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
-func (writepack *OdbWritepack) Free() {
-	untrackCallbacksPayload(&writepack.ccallbacks)
-	runtime.SetFinalizer(writepack, nil)
-	C._go_git_odb_writepack_free(writepack.ptr)
-}

odb_test.go

@@ -1,17 +1,12 @@
 package git
 
 import (
-	"bytes"
 	"errors"
-	"fmt"
 	"io"
-	"io/ioutil"
-	"os"
-	"path"
 	"testing"
 )
 
-func TestOdbRead(t *testing.T) {
+func TestOdbReadHeader(t *testing.T) {
 	t.Parallel()
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)
@@ -31,27 +26,13 @@ func TestOdbRead(t *testing.T) {
 	if err != nil {
 		t.Fatalf("ReadHeader: %v", err)
 	}
-
+	
 	if sz != uint64(len(data)) {
 		t.Errorf("ReadHeader got size %d, want %d", sz, len(data))
 	}
 	if typ != ObjectBlob {
 		t.Errorf("ReadHeader got object type %s", typ)
 	}
-
-	obj, err := odb.Read(id)
-	if err != nil {
-		t.Fatalf("Read: %v", err)
-	}
-	if !bytes.Equal(obj.Data(), data) {
-		t.Errorf("Read got wrong data")
-	}
-	if sz := obj.Len(); sz != uint64(len(data)) {
-		t.Errorf("Read got size %d, want %d", sz, len(data))
-	}
-	if typ := obj.Type(); typ != ObjectBlob {
-		t.Errorf("Read got object type %s", typ)
-	}
 }
 
 func TestOdbStream(t *testing.T) {
@@ -61,34 +42,27 @@ func TestOdbStream(t *testing.T) {
 
 	_, _ = seedTestRepo(t, repo)
 
-	odb, err := repo.Odb()
-	checkFatal(t, err)
+	odb, error := repo.Odb()
+	checkFatal(t, error)
 
 	str := "hello, world!"
 
-	writeStream, err := odb.NewWriteStream(int64(len(str)), ObjectBlob)
-	checkFatal(t, err)
-	n, err := io.WriteString(writeStream, str)
-	checkFatal(t, err)
+	stream, error := odb.NewWriteStream(int64(len(str)), ObjectBlob)
+	checkFatal(t, error)
+	n, error := io.WriteString(stream, str)
+	checkFatal(t, error)
 	if n != len(str) {
 		t.Fatalf("Bad write length %v != %v", n, len(str))
 	}
 
-	err = writeStream.Close()
-	checkFatal(t, err)
+	error = stream.Close()
+	checkFatal(t, error)
 
-	expectedId, err := NewOid("30f51a3fba5274d53522d0f19748456974647b4f")
-	checkFatal(t, err)
-	if writeStream.Id.Cmp(expectedId) != 0 {
+	expectedId, error := NewOid("30f51a3fba5274d53522d0f19748456974647b4f")
+	checkFatal(t, error)
+	if stream.Id.Cmp(expectedId) != 0 {
 		t.Fatal("Wrong data written")
 	}
-
-	readStream, err := odb.NewReadStream(&writeStream.Id)
-	checkFatal(t, err)
-	data, err := ioutil.ReadAll(readStream)
-	if str != string(data) {
-		t.Fatalf("Wrong data read %v != %v", str, string(data))
-	}
 }
 
 func TestOdbHash(t *testing.T) {
@@ -98,8 +72,8 @@ func TestOdbHash(t *testing.T) {
 
 	_, _ = seedTestRepo(t, repo)
 
-	odb, err := repo.Odb()
-	checkFatal(t, err)
+	odb, error := repo.Odb()
+	checkFatal(t, error)
 
 	str := `tree 115fcae49287c82eb55bb275cbbd4556fbed72b7
 parent 66e1c476199ebcd3e304659992233132c5a52c6c
@@ -108,16 +82,14 @@ committer John Doe <john@doe.com> 1390682018 +0000
 
 Initial commit.`
 
-	for _, data := range [][]byte{[]byte(str), doublePointerBytes()} {
-		oid, err := odb.Hash(data, ObjectCommit)
-		checkFatal(t, err)
+	oid, error := odb.Hash([]byte(str), ObjectCommit)
+	checkFatal(t, error)
 
-		coid, err := odb.Write(data, ObjectCommit)
-		checkFatal(t, err)
+	coid, error := odb.Write([]byte(str), ObjectCommit)
+	checkFatal(t, error)
 
-		if oid.Cmp(coid) != 0 {
-			t.Fatal("Hash and write Oids are different")
-		}
+	if oid.Cmp(coid) != 0 {
+		t.Fatal("Hash and write Oids are different")
 	}
 }
 
@@ -155,81 +127,3 @@ func TestOdbForeach(t *testing.T) {
 		t.Fatalf("Odb.ForEach() did not return the expected error, got %v", err)
 	}
 }
-
-func TestOdbWritepack(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	_, _ = seedTestRepo(t, repo)
-
-	odb, err := repo.Odb()
-	checkFatal(t, err)
-
-	var finalStats TransferProgress
-	writepack, err := odb.NewWritePack(func(stats TransferProgress) error {
-		finalStats = stats
-		return nil
-	})
-	checkFatal(t, err)
-	defer writepack.Free()
-
-	_, err = writepack.Write(outOfOrderPack)
-	checkFatal(t, err)
-	err = writepack.Commit()
-	checkFatal(t, err)
-
-	if finalStats.TotalObjects != 3 {
-		t.Errorf("mismatched transferred objects, expected 3, got %v", finalStats.TotalObjects)
-	}
-	if finalStats.ReceivedObjects != 3 {
-		t.Errorf("mismatched received objects, expected 3, got %v", finalStats.ReceivedObjects)
-	}
-	if finalStats.IndexedObjects != 3 {
-		t.Errorf("mismatched indexed objects, expected 3, got %v", finalStats.IndexedObjects)
-	}
-}
-
-func TestOdbBackendLoose(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	_, _ = seedTestRepo(t, repo)
-
-	odb, err := repo.Odb()
-	checkFatal(t, err)
-
-	looseObjectsDir, err := ioutil.TempDir("", fmt.Sprintf("loose_objects_%s", path.Base(repo.Path())))
-	checkFatal(t, err)
-	defer os.RemoveAll(looseObjectsDir)
-
-	looseObjectsBackend, err := NewOdbBackendLoose(looseObjectsDir, -1, false, 0, 0)
-	checkFatal(t, err)
-	if err := odb.AddBackend(looseObjectsBackend, 999); err != nil {
-		looseObjectsBackend.Free()
-		checkFatal(t, err)
-	}
-
-	str := "hello, world!"
-
-	writeStream, err := odb.NewWriteStream(int64(len(str)), ObjectBlob)
-	checkFatal(t, err)
-	n, err := io.WriteString(writeStream, str)
-	checkFatal(t, err)
-	if n != len(str) {
-		t.Fatalf("Bad write length %v != %v", n, len(str))
-	}
-
-	err = writeStream.Close()
-	checkFatal(t, err)
-
-	expectedId, err := NewOid("30f51a3fba5274d53522d0f19748456974647b4f")
-	checkFatal(t, err)
-	if !writeStream.Id.Equal(expectedId) {
-		t.Fatalf("writeStream.id = %v; want %v", writeStream.Id, expectedId)
-	}
-
-	_, err = os.Stat(path.Join(looseObjectsDir, expectedId.String()[:2], expectedId.String()[2:]))
-	checkFatal(t, err)
-}

packbuilder.go

@@ -16,27 +16,21 @@ import (
 )
 
 type Packbuilder struct {
-	doNotCompare
 	ptr *C.git_packbuilder
-	r   *Repository
 }
 
 func (repo *Repository) NewPackbuilder() (*Packbuilder, error) {
+	builder := &Packbuilder{}
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_packbuilder
-	ret := C.git_packbuilder_new(&ptr, repo.ptr)
+	ret := C.git_packbuilder_new(&builder.ptr, repo.ptr)
 	if ret != 0 {
 		return nil, MakeGitError(ret)
 	}
-	return newPackbuilderFromC(ptr, repo), nil
-}
-
-func newPackbuilderFromC(ptr *C.git_packbuilder, r *Repository) *Packbuilder {
-	pb := &Packbuilder{ptr: ptr, r: r}
-	runtime.SetFinalizer(pb, (*Packbuilder).Free)
-	return pb
+	runtime.SetFinalizer(builder, (*Packbuilder).Free)
+	return builder, nil
 }
 
 func (pb *Packbuilder) Free() {
@@ -52,8 +46,6 @@ func (pb *Packbuilder) Insert(id *Oid, name string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_packbuilder_insert(pb.ptr, id.toC(), cname)
-	runtime.KeepAlive(pb)
-	runtime.KeepAlive(id)
 	if ret != 0 {
 		return MakeGitError(ret)
 	}
@@ -65,8 +57,6 @@ func (pb *Packbuilder) InsertCommit(id *Oid) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_packbuilder_insert_commit(pb.ptr, id.toC())
-	runtime.KeepAlive(pb)
-	runtime.KeepAlive(id)
 	if ret != 0 {
 		return MakeGitError(ret)
 	}
@@ -78,21 +68,6 @@ func (pb *Packbuilder) InsertTree(id *Oid) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_packbuilder_insert_tree(pb.ptr, id.toC())
-	runtime.KeepAlive(pb)
-	runtime.KeepAlive(id)
-	if ret != 0 {
-		return MakeGitError(ret)
-	}
-	return nil
-}
-
-func (pb *Packbuilder) InsertWalk(walk *RevWalk) error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_packbuilder_insert_walk(pb.ptr, walk.ptr)
-	runtime.KeepAlive(pb)
-	runtime.KeepAlive(walk)
 	if ret != 0 {
 		return MakeGitError(ret)
 	}
@@ -100,9 +75,7 @@ func (pb *Packbuilder) InsertWalk(walk *RevWalk) error {
 }
 
 func (pb *Packbuilder) ObjectCount() uint32 {
-	ret := uint32(C.git_packbuilder_object_count(pb.ptr))
-	runtime.KeepAlive(pb)
-	return ret
+	return uint32(C.git_packbuilder_object_count(pb.ptr))
 }
 
 func (pb *Packbuilder) WriteToFile(name string, mode os.FileMode) error {
@@ -113,7 +86,6 @@ func (pb *Packbuilder) WriteToFile(name string, mode os.FileMode) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_packbuilder_write(pb.ptr, cname, C.uint(mode.Perm()), nil, nil)
-	runtime.KeepAlive(pb)
 	if ret != 0 {
 		return MakeGitError(ret)
 	}
@@ -128,21 +100,19 @@ func (pb *Packbuilder) Write(w io.Writer) error {
 }
 
 func (pb *Packbuilder) Written() uint32 {
-	ret := uint32(C.git_packbuilder_written(pb.ptr))
-	runtime.KeepAlive(pb)
-	return ret
+	return uint32(C.git_packbuilder_written(pb.ptr))
 }
 
 type PackbuilderForeachCallback func([]byte) error
-type packbuilderCallbackData struct {
-	callback    PackbuilderForeachCallback
-	errorTarget *error
+type packbuilderCbData struct {
+	callback PackbuilderForeachCallback
+	err      error
 }
 
-//export packbuilderForEachCallback
-func packbuilderForEachCallback(buf unsafe.Pointer, size C.size_t, handle unsafe.Pointer) C.int {
+//export packbuilderForEachCb
+func packbuilderForEachCb(buf unsafe.Pointer, size C.size_t, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*packbuilderCallbackData)
+	data, ok := payload.(*packbuilderCbData)
 	if !ok {
 		panic("could not get packbuilder CB data")
 	}
@@ -151,20 +121,19 @@ func packbuilderForEachCallback(buf unsafe.Pointer, size C.size_t, handle unsafe
 
 	err := data.callback(slice)
 	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+		data.err = err
+		return C.GIT_EUSER
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 // ForEach repeatedly calls the callback with new packfile data until
 // there is no more data or the callback returns an error
 func (pb *Packbuilder) ForEach(callback PackbuilderForeachCallback) error {
-	var err error
-	data := packbuilderCallbackData{
-		callback:    callback,
-		errorTarget: &err,
+	data := packbuilderCbData{
+		callback: callback,
+		err:      nil,
 	}
 	handle := pointerHandles.Track(&data)
 	defer pointerHandles.Untrack(handle)
@@ -172,13 +141,12 @@ func (pb *Packbuilder) ForEach(callback PackbuilderForeachCallback) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C._go_git_packbuilder_foreach(pb.ptr, handle)
-	runtime.KeepAlive(pb)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	err := C._go_git_packbuilder_foreach(pb.ptr, handle)
+	if err == C.GIT_EUSER {
+		return data.err
 	}
-	if ret < 0 {
-		return MakeGitError(ret)
+	if err < 0 {
+		return MakeGitError(err)
 	}
 
 	return nil

patch.go

@@ -10,7 +10,6 @@ import (
 )
 
 type Patch struct {
-	doNotCompare
 	ptr *C.git_patch
 }
 
@@ -48,11 +47,10 @@ func (patch *Patch) String() (string, error) {
 	var buf C.git_buf
 
 	ecode := C.git_patch_to_buf(&buf, patch.ptr)
-	runtime.KeepAlive(patch)
 	if ecode < 0 {
 		return "", MakeGitError(ecode)
 	}
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	return C.GoString(buf.ptr), nil
 }
@@ -70,7 +68,7 @@ func (v *Repository) PatchFromBuffers(oldPath, newPath string, oldBuf, newBuf []
 	var patchPtr *C.git_patch
 
 	oldPtr := toPointer(oldBuf)
-	newPtr := toPointer(newBuf)
+	newPtr := (*C.char)(toPointer(newBuf))
 
 	cOldPath := C.CString(oldPath)
 	defer C.free(unsafe.Pointer(cOldPath))
@@ -78,22 +76,15 @@ func (v *Repository) PatchFromBuffers(oldPath, newPath string, oldBuf, newBuf []
 	cNewPath := C.CString(newPath)
 	defer C.free(unsafe.Pointer(cNewPath))
 
-	var err error
-	copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
+	copts, _ := diffOptionsToC(opts)
 	defer freeDiffOptions(copts)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_patch_from_buffers(&patchPtr, oldPtr, C.size_t(len(oldBuf)), cOldPath, newPtr, C.size_t(len(newBuf)), cNewPath, copts)
-	runtime.KeepAlive(oldBuf)
-	runtime.KeepAlive(newBuf)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return nil, err
+	ecode := C.git_patch_from_buffers(&patchPtr, oldPtr, C.size_t(len(oldBuf)), cOldPath, newPtr, C.size_t(len(newBuf)), cNewPath, copts)
+	if ecode < 0 {
+		return nil, MakeGitError(ecode)
 	}
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
 	return newPatchFromC(patchPtr), nil
 }

push_test.go

@@ -14,18 +14,15 @@ func TestRemotePush(t *testing.T) {
 
 	remote, err := localRepo.Remotes.Create("test_push", repo.Path())
 	checkFatal(t, err)
-	defer remote.Free()
 
 	seedTestRepo(t, localRepo)
 
 	err = remote.Push([]string{"refs/heads/master"}, nil)
 	checkFatal(t, err)
 
-	ref, err := localRepo.References.Lookup("refs/remotes/test_push/master")
+	_, err = localRepo.References.Lookup("refs/remotes/test_push/master")
 	checkFatal(t, err)
-	defer ref.Free()
 
-	ref, err = repo.References.Lookup("refs/heads/master")
+	_, err = repo.References.Lookup("refs/heads/master")
 	checkFatal(t, err)
-	defer ref.Free()
 }

rebase.go

@@ -2,14 +2,9 @@ package git
 
 /*
 #include <git2.h>
-
-extern void _go_git_populate_rebase_callbacks(git_rebase_options *opts);
 */
 import "C"
 import (
-	"errors"
-	"fmt"
-	"reflect"
 	"runtime"
 	"unsafe"
 )
@@ -20,8 +15,6 @@ type RebaseOperationType uint
 const (
 	// RebaseOperationPick The given commit is to be cherry-picked.  The client should commit the changes and continue if there are no conflicts.
 	RebaseOperationPick RebaseOperationType = C.GIT_REBASE_OPERATION_PICK
-	// RebaseOperationReword The given commit is to be cherry-picked, but the client should prompt the user to provide an updated commit message.
-	RebaseOperationReword RebaseOperationType = C.GIT_REBASE_OPERATION_REWORD
 	// RebaseOperationEdit The given commit is to be cherry-picked, but the client should stop to allow the user to edit the changes before committing them.
 	RebaseOperationEdit RebaseOperationType = C.GIT_REBASE_OPERATION_EDIT
 	// RebaseOperationSquash The given commit is to be squashed into the previous commit.  The commit message will be merged with the previous message.
@@ -32,30 +25,6 @@ const (
 	RebaseOperationExec RebaseOperationType = C.GIT_REBASE_OPERATION_EXEC
 )
 
-func (t RebaseOperationType) String() string {
-	switch t {
-	case RebaseOperationPick:
-		return "pick"
-	case RebaseOperationReword:
-		return "reword"
-	case RebaseOperationEdit:
-		return "edit"
-	case RebaseOperationSquash:
-		return "squash"
-	case RebaseOperationFixup:
-		return "fixup"
-	case RebaseOperationExec:
-		return "exec"
-	}
-	return fmt.Sprintf("RebaseOperationType(%d)", t)
-}
-
-// Special value indicating that there is no currently active operation
-var RebaseNoOperation uint = ^uint(0)
-
-// Error returned if there is no current rebase operation
-var ErrRebaseNoOperation = errors.New("no current rebase operation")
-
 // RebaseOperation describes a single instruction/operation to be performed during the rebase.
 type RebaseOperation struct {
 	Type RebaseOperationType
@@ -72,141 +41,14 @@ func newRebaseOperationFromC(c *C.git_rebase_operation) *RebaseOperation {
 	return operation
 }
 
-//export commitCreateCallback
-func commitCreateCallback(
-	errorMessage **C.char,
-	_out *C.git_oid,
-	_author, _committer *C.git_signature,
-	_message_encoding, _message *C.char,
-	_tree *C.git_tree,
-	_parent_count C.size_t,
-	_parents **C.git_commit,
-	handle unsafe.Pointer,
-) C.int {
-	data, ok := pointerHandles.Get(handle).(*rebaseOptionsData)
-	if !ok {
-		panic("invalid sign payload")
-	}
-
-	if data.options.CommitCreateCallback == nil && data.options.CommitSigningCallback == nil {
-		return C.int(ErrorCodePassthrough)
-	}
-
-	messageEncoding := MessageEncodingUTF8
-	if _message_encoding != nil {
-		messageEncoding = MessageEncoding(C.GoString(_message_encoding))
-	}
-	tree := &Tree{
-		Object: Object{
-			ptr:  (*C.git_object)(_tree),
-			repo: data.repo,
-		},
-		cast_ptr: _tree,
-	}
-
-	var goParents []*C.git_commit
-	if _parent_count > 0 {
-		hdr := reflect.SliceHeader{
-			Data: uintptr(unsafe.Pointer(_parents)),
-			Len:  int(_parent_count),
-			Cap:  int(_parent_count),
-		}
-		goParents = *(*[]*C.git_commit)(unsafe.Pointer(&hdr))
-	}
-
-	parents := make([]*Commit, int(_parent_count))
-	for i, p := range goParents {
-		parents[i] = &Commit{
-			Object: Object{
-				ptr:  (*C.git_object)(p),
-				repo: data.repo,
-			},
-			cast_ptr: p,
-		}
-	}
-
-	if data.options.CommitCreateCallback != nil {
-		oid, err := data.options.CommitCreateCallback(
-			newSignatureFromC(_author),
-			newSignatureFromC(_committer),
-			messageEncoding,
-			C.GoString(_message),
-			tree,
-			parents...,
-		)
-		if err != nil {
-			if data.errorTarget != nil {
-				*data.errorTarget = err
-			}
-			return setCallbackError(errorMessage, err)
-		}
-		if oid == nil {
-			return C.int(ErrorCodePassthrough)
-		}
-		*_out = *oid.toC()
-	} else if data.options.CommitSigningCallback != nil {
-		commitContent, err := data.repo.CreateCommitBuffer(
-			newSignatureFromC(_author),
-			newSignatureFromC(_committer),
-			messageEncoding,
-			C.GoString(_message),
-			tree,
-			parents...,
-		)
-		if err != nil {
-			if data.errorTarget != nil {
-				*data.errorTarget = err
-			}
-			return setCallbackError(errorMessage, err)
-		}
-
-		signature, signatureField, err := data.options.CommitSigningCallback(string(commitContent))
-		if err != nil {
-			if data.errorTarget != nil {
-				*data.errorTarget = err
-			}
-			return setCallbackError(errorMessage, err)
-		}
-
-		oid, err := data.repo.CreateCommitWithSignature(string(commitContent), signature, signatureField)
-		if err != nil {
-			if data.errorTarget != nil {
-				*data.errorTarget = err
-			}
-			return setCallbackError(errorMessage, err)
-		}
-		*_out = *oid.toC()
-	}
-
-	return C.int(ErrorCodeOK)
-}
-
-// RebaseOptions are used to tell the rebase machinery how to operate.
+// RebaseOptions are used to tell the rebase machinery how to operate
 type RebaseOptions struct {
+	Version         uint
 	Quiet           int
 	InMemory        int
 	RewriteNotesRef string
 	MergeOptions    MergeOptions
-	CheckoutOptions CheckoutOptions
-	// CommitCreateCallback is an optional callback that allows users to override
-	// commit creation when rebasing. If specified, users can create
-	// their own commit and provide the commit ID, which may be useful for
-	// signing commits or otherwise customizing the commit creation. If this
-	// callback returns a nil Oid, then the rebase will continue to create the
-	// commit.
-	CommitCreateCallback CommitCreateCallback
-	// Deprecated: CommitSigningCallback is an optional callback that will be
-	// called with the commit content, allowing a signature to be added to the
-	// rebase commit. This field is only used when rebasing.  This callback is
-	// not invoked if a CommitCreateCallback is specified.  CommitCreateCallback
-	// should be used instead of this.
-	CommitSigningCallback CommitSigningCallback
-}
-
-type rebaseOptionsData struct {
-	options     *RebaseOptions
-	repo        *Repository
-	errorTarget *error
+	CheckoutOptions CheckoutOpts
 }
 
 // DefaultRebaseOptions returns a RebaseOptions with default values.
@@ -216,7 +58,7 @@ func DefaultRebaseOptions() (RebaseOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_rebase_options_init(&opts, C.GIT_REBASE_OPTIONS_VERSION)
+	ecode := C.git_rebase_init_options(&opts, C.GIT_REBASE_OPTIONS_VERSION)
 	if ecode < 0 {
 		return RebaseOptions{}, MakeGitError(ecode)
 	}
@@ -225,6 +67,7 @@ func DefaultRebaseOptions() (RebaseOptions, error) {
 
 func rebaseOptionsFromC(opts *C.git_rebase_options) RebaseOptions {
 	return RebaseOptions{
+		Version:         uint(opts.version),
 		Quiet:           int(opts.quiet),
 		InMemory:        int(opts.inmemory),
 		RewriteNotesRef: C.GoString(opts.rewrite_notes_ref),
@@ -233,40 +76,17 @@ func rebaseOptionsFromC(opts *C.git_rebase_options) RebaseOptions {
 	}
 }
 
-func populateRebaseOptions(copts *C.git_rebase_options, opts *RebaseOptions, repo *Repository, errorTarget *error) *C.git_rebase_options {
-	C.git_rebase_options_init(copts, C.GIT_REBASE_OPTIONS_VERSION)
-	if opts == nil {
+func (ro *RebaseOptions) toC() *C.git_rebase_options {
+	if ro == nil {
 		return nil
 	}
-
-	copts.quiet = C.int(opts.Quiet)
-	copts.inmemory = C.int(opts.InMemory)
-	copts.rewrite_notes_ref = mapEmptyStringToNull(opts.RewriteNotesRef)
-	populateMergeOptions(&copts.merge_options, &opts.MergeOptions)
-	populateCheckoutOptions(&copts.checkout_options, &opts.CheckoutOptions, errorTarget)
-
-	if opts.CommitCreateCallback != nil || opts.CommitSigningCallback != nil {
-		data := &rebaseOptionsData{
-			options:     opts,
-			repo:        repo,
-			errorTarget: errorTarget,
-		}
-		C._go_git_populate_rebase_callbacks(copts)
-		copts.payload = pointerHandles.Track(data)
-	}
-
-	return copts
-}
-
-func freeRebaseOptions(copts *C.git_rebase_options) {
-	if copts == nil {
-		return
-	}
-	C.free(unsafe.Pointer(copts.rewrite_notes_ref))
-	freeMergeOptions(&copts.merge_options)
-	freeCheckoutOptions(&copts.checkout_options)
-	if copts.payload != nil {
-		pointerHandles.Untrack(copts.payload)
+	return &C.git_rebase_options{
+		version:           C.uint(ro.Version),
+		quiet:             C.int(ro.Quiet),
+		inmemory:          C.int(ro.InMemory),
+		rewrite_notes_ref: mapEmptyStringToNull(ro.RewriteNotesRef),
+		merge_options:     *ro.MergeOptions.toC(),
+		checkout_options:  *ro.CheckoutOptions.toC(),
 	}
 }
 
@@ -279,10 +99,7 @@ func mapEmptyStringToNull(ref string) *C.char {
 
 // Rebase is the struct representing a Rebase object.
 type Rebase struct {
-	doNotCompare
-	ptr     *C.git_rebase
-	r       *Repository
-	options *C.git_rebase_options
+	ptr *C.git_rebase
 }
 
 // InitRebase initializes a rebase operation to rebase the changes in branch relative to upstream onto another branch.
@@ -303,22 +120,12 @@ func (r *Repository) InitRebase(branch *AnnotatedCommit, upstream *AnnotatedComm
 	}
 
 	var ptr *C.git_rebase
-	var err error
-	cOpts := populateRebaseOptions(&C.git_rebase_options{}, opts, r, &err)
-	ret := C.git_rebase_init(&ptr, r.ptr, branch.ptr, upstream.ptr, onto.ptr, cOpts)
-	runtime.KeepAlive(branch)
-	runtime.KeepAlive(upstream)
-	runtime.KeepAlive(onto)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		freeRebaseOptions(cOpts)
-		return nil, err
-	}
-	if ret < 0 {
-		freeRebaseOptions(cOpts)
-		return nil, MakeGitError(ret)
+	err := C.git_rebase_init(&ptr, r.ptr, branch.ptr, upstream.ptr, onto.ptr, opts.toC())
+	if err < 0 {
+		return nil, MakeGitError(err)
 	}
 
-	return newRebaseFromC(ptr, r, cOpts), nil
+	return newRebaseFromC(ptr), nil
 }
 
 // OpenRebase opens an existing rebase that was previously started by either an invocation of InitRebase or by another client.
@@ -327,51 +134,38 @@ func (r *Repository) OpenRebase(opts *RebaseOptions) (*Rebase, error) {
 	defer runtime.UnlockOSThread()
 
 	var ptr *C.git_rebase
-	var err error
-	cOpts := populateRebaseOptions(&C.git_rebase_options{}, opts, r, &err)
-	ret := C.git_rebase_open(&ptr, r.ptr, cOpts)
-	runtime.KeepAlive(r)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		freeRebaseOptions(cOpts)
-		return nil, err
-	}
-	if ret < 0 {
-		freeRebaseOptions(cOpts)
-		return nil, MakeGitError(ret)
+	err := C.git_rebase_open(&ptr, r.ptr, opts.toC())
+	if err < 0 {
+		return nil, MakeGitError(err)
 	}
 
-	return newRebaseFromC(ptr, r, cOpts), nil
+	return newRebaseFromC(ptr), nil
 }
 
 // OperationAt gets the rebase operation specified by the given index.
 func (rebase *Rebase) OperationAt(index uint) *RebaseOperation {
 	operation := C.git_rebase_operation_byindex(rebase.ptr, C.size_t(index))
-
+	
 	return newRebaseOperationFromC(operation)
 }
 
-// CurrentOperationIndex gets the index of the rebase operation that is
-// currently being applied. There is also an error returned for API
-// compatibility.
+// CurrentOperationIndex gets the index of the rebase operation that is currently being applied.
+// Returns an error if no rebase operation is currently applied.
 func (rebase *Rebase) CurrentOperationIndex() (uint, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var err error
-	operationIndex := uint(C.git_rebase_operation_current(rebase.ptr))
-	runtime.KeepAlive(rebase)
-	if operationIndex == RebaseNoOperation {
-		err = ErrRebaseNoOperation
+	operationIndex := int(C.git_rebase_operation_current(rebase.ptr))
+	if operationIndex == C.GIT_REBASE_NO_OPERATION {
+		return 0, MakeGitError(C.GIT_REBASE_NO_OPERATION)
 	}
 
-	return uint(operationIndex), err
+	return uint(operationIndex), nil
 }
 
 // OperationCount gets the count of rebase operations that are to be applied.
 func (rebase *Rebase) OperationCount() uint {
-	ret := uint(C.git_rebase_operation_entrycount(rebase.ptr))
-	runtime.KeepAlive(rebase)
-	return ret
+	return uint(C.git_rebase_operation_entrycount(rebase.ptr))
 }
 
 // Next performs the next rebase operation and returns the information about it.
@@ -384,7 +178,6 @@ func (rebase *Rebase) Next() (*RebaseOperation, error) {
 
 	var ptr *C.git_rebase_operation
 	err := C.git_rebase_next(&ptr, rebase.ptr)
-	runtime.KeepAlive(rebase)
 	if err < 0 {
 		return nil, MakeGitError(err)
 	}
@@ -392,27 +185,6 @@ func (rebase *Rebase) Next() (*RebaseOperation, error) {
 	return newRebaseOperationFromC(ptr), nil
 }
 
-// InmemoryIndex gets the index produced by the last operation, which is the
-// result of `Next()` and which will be committed by the next invocation of
-// `Commit()`. This is useful for resolving conflicts in an in-memory rebase
-// before committing them.
-//
-// This is only applicable for in-memory rebases; for rebases within a working
-// directory, the changes were applied to the repository's index.
-func (rebase *Rebase) InmemoryIndex() (*Index, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var ptr *C.git_index
-	err := C.git_rebase_inmemory_index(&ptr, rebase.ptr)
-	runtime.KeepAlive(rebase)
-	if err < 0 {
-		return nil, MakeGitError(err)
-	}
-
-	return newIndexFromC(ptr, rebase.r), nil
-}
-
 // Commit commits the current patch.
 // You must have resolved any conflicts that were introduced during the patch application from the Next() invocation.
 func (rebase *Rebase) Commit(ID *Oid, author, committer *Signature, message string) error {
@@ -435,8 +207,6 @@ func (rebase *Rebase) Commit(ID *Oid, author, committer *Signature, message stri
 	defer C.free(unsafe.Pointer(cmsg))
 
 	cerr := C.git_rebase_commit(ID.toC(), rebase.ptr, authorSig, committerSig, nil, cmsg)
-	runtime.KeepAlive(ID)
-	runtime.KeepAlive(rebase)
 	if cerr < 0 {
 		return MakeGitError(cerr)
 	}
@@ -450,7 +220,6 @@ func (rebase *Rebase) Finish() error {
 	defer runtime.UnlockOSThread()
 
 	err := C.git_rebase_finish(rebase.ptr, nil)
-	runtime.KeepAlive(rebase)
 	if err < 0 {
 		return MakeGitError(err)
 	}
@@ -464,7 +233,6 @@ func (rebase *Rebase) Abort() error {
 	defer runtime.UnlockOSThread()
 
 	err := C.git_rebase_abort(rebase.ptr)
-	runtime.KeepAlive(rebase)
 	if err < 0 {
 		return MakeGitError(err)
 	}
@@ -472,14 +240,13 @@ func (rebase *Rebase) Abort() error {
 }
 
 // Free frees the Rebase object.
-func (r *Rebase) Free() {
-	runtime.SetFinalizer(r, nil)
-	C.git_rebase_free(r.ptr)
-	freeRebaseOptions(r.options)
+func (rebase *Rebase) Free() {
+	runtime.SetFinalizer(rebase, nil)
+	C.git_rebase_free(rebase.ptr)
 }
 
-func newRebaseFromC(ptr *C.git_rebase, repo *Repository, opts *C.git_rebase_options) *Rebase {
-	rebase := &Rebase{ptr: ptr, r: repo, options: opts}
+func newRebaseFromC(ptr *C.git_rebase) *Rebase {
+	rebase := &Rebase{ptr: ptr}
 	runtime.SetFinalizer(rebase, (*Rebase).Free)
 	return rebase
 }

rebase_test.go

@@ -1,93 +1,14 @@
 package git
 
 import (
-	"bytes"
 	"errors"
 	"strconv"
-	"strings"
 	"testing"
 	"time"
-
-	"github.com/ProtonMail/go-crypto/openpgp"
-	"github.com/ProtonMail/go-crypto/openpgp/packet"
 )
 
 // Tests
 
-func TestRebaseInMemoryWithConflict(t *testing.T) {
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-	seedTestRepo(t, repo)
-
-	// Create two branches with common history, where both modify "common-file"
-	// in a conflicting way.
-	_, err := commitSomething(repo, "common-file", "a\nb\nc\n", commitOptions{})
-	checkFatal(t, err)
-	checkFatal(t, createBranch(repo, "branch-a"))
-	checkFatal(t, createBranch(repo, "branch-b"))
-
-	checkFatal(t, repo.SetHead("refs/heads/branch-a"))
-	_, err = commitSomething(repo, "common-file", "1\nb\nc\n", commitOptions{})
-	checkFatal(t, err)
-
-	checkFatal(t, repo.SetHead("refs/heads/branch-b"))
-	_, err = commitSomething(repo, "common-file", "x\nb\nc\n", commitOptions{})
-	checkFatal(t, err)
-
-	branchA, err := repo.LookupBranch("branch-a", BranchLocal)
-	checkFatal(t, err)
-	onto, err := repo.AnnotatedCommitFromRef(branchA.Reference)
-	checkFatal(t, err)
-
-	// We then rebase "branch-b" onto "branch-a" in-memory, which should result
-	// in a conflict.
-	rebase, err := repo.InitRebase(nil, nil, onto, &RebaseOptions{InMemory: 1})
-	checkFatal(t, err)
-
-	_, err = rebase.Next()
-	checkFatal(t, err)
-
-	index, err := rebase.InmemoryIndex()
-	checkFatal(t, err)
-
-	// We simply resolve the conflict and commit the rebase.
-	if !index.HasConflicts() {
-		t.Fatal("expected index to have conflicts")
-	}
-
-	conflict, err := index.Conflict("common-file")
-	checkFatal(t, err)
-
-	resolvedBlobID, err := repo.CreateBlobFromBuffer([]byte("resolved contents"))
-	checkFatal(t, err)
-
-	resolvedEntry := *conflict.Our
-	resolvedEntry.Id = resolvedBlobID
-	checkFatal(t, index.Add(&resolvedEntry))
-	checkFatal(t, index.RemoveConflict("common-file"))
-
-	var commitID Oid
-	checkFatal(t, rebase.Commit(&commitID, signature(), signature(), "rebased message"))
-	checkFatal(t, rebase.Finish())
-
-	// And then assert that we can look up the new merge commit, and that the
-	// "common-file" has the expected contents.
-	commit, err := repo.LookupCommit(&commitID)
-	checkFatal(t, err)
-	if commit.Message() != "rebased message" {
-		t.Fatalf("unexpected commit message %q", commit.Message())
-	}
-
-	tree, err := commit.Tree()
-	checkFatal(t, err)
-
-	blob, err := repo.LookupBlob(tree.EntryByName("common-file").Id)
-	checkFatal(t, err)
-	if string(blob.Contents()) != "resolved contents" {
-		t.Fatalf("unexpected resolved blob contents %q", string(blob.Contents()))
-	}
-}
-
 func TestRebaseAbort(t *testing.T) {
 	// TEST DATA
 
@@ -112,12 +33,12 @@ func TestRebaseAbort(t *testing.T) {
 	seedTestRepo(t, repo)
 
 	// Setup a repo with 2 branches and a different tree
-	err := setupRepoForRebase(repo, masterCommit, branchName, commitOptions{})
+	err := setupRepoForRebase(repo, masterCommit, branchName)
 	checkFatal(t, err)
 
 	// Create several commits in emile
 	for _, commit := range emileCommits {
-		_, err = commitSomething(repo, commit, commit, commitOptions{})
+		_, err = commitSomething(repo, commit, commit)
 		checkFatal(t, err)
 	}
 
@@ -127,7 +48,7 @@ func TestRebaseAbort(t *testing.T) {
 	assertStringList(t, expectedHistory, actualHistory)
 
 	// Rebase onto master
-	rebase, err := performRebaseOnto(repo, "master", nil)
+	rebase, err := performRebaseOnto(repo, "master")
 	checkFatal(t, err)
 	defer rebase.Free()
 
@@ -173,17 +94,17 @@ func TestRebaseNoConflicts(t *testing.T) {
 	}
 
 	// Setup a repo with 2 branches and a different tree
-	err = setupRepoForRebase(repo, masterCommit, branchName, commitOptions{})
+	err = setupRepoForRebase(repo, masterCommit, branchName)
 	checkFatal(t, err)
 
 	// Create several commits in emile
 	for _, commit := range emileCommits {
-		_, err = commitSomething(repo, commit, commit, commitOptions{})
+		_, err = commitSomething(repo, commit, commit)
 		checkFatal(t, err)
 	}
 
 	// Rebase onto master
-	rebase, err := performRebaseOnto(repo, "master", nil)
+	rebase, err := performRebaseOnto(repo, "master")
 	checkFatal(t, err)
 	defer rebase.Free()
 
@@ -209,127 +130,11 @@ func TestRebaseNoConflicts(t *testing.T) {
 	actualHistory, err := commitMsgsList(repo)
 	checkFatal(t, err)
 	assertStringList(t, expectedHistory, actualHistory)
-}
 
-func TestRebaseGpgSigned(t *testing.T) {
-	// TEST DATA
-
-	entity, err := openpgp.NewEntity("Namey mcnameface", "test comment", "test@example.com", nil)
-	checkFatal(t, err)
-
-	rebaseOpts, err := DefaultRebaseOptions()
-	checkFatal(t, err)
-
-	signCommitContent := func(commitContent string) (string, string, error) {
-		cipherText := new(bytes.Buffer)
-		err := openpgp.ArmoredDetachSignText(cipherText, entity, strings.NewReader(commitContent), &packet.Config{})
-		if err != nil {
-			return "", "", errors.New("error signing payload")
-		}
-
-		return cipherText.String(), "", nil
-	}
-	rebaseOpts.CommitSigningCallback = signCommitContent
-
-	commitOpts := commitOptions{
-		CommitSigningCallback: signCommitContent,
-	}
-
-	// Inputs
-	branchName := "emile"
-	masterCommit := "something"
-	emileCommits := []string{
-		"fou",
-		"barre",
-		"ouich",
-	}
-
-	// Outputs
-	expectedHistory := []string{
-		"Test rebase, Baby! " + emileCommits[2],
-		"Test rebase, Baby! " + emileCommits[1],
-		"Test rebase, Baby! " + emileCommits[0],
-		"Test rebase, Baby! " + masterCommit,
-		"This is a commit\n",
-	}
-
-	// TEST
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-	seedTestRepoOpt(t, repo, commitOpts)
-
-	// Try to open existing rebase
-	_, err = repo.OpenRebase(nil)
-	if err == nil {
-		t.Fatal("Did not expect to find a rebase in progress")
-	}
-
-	// Setup a repo with 2 branches and a different tree
-	err = setupRepoForRebase(repo, masterCommit, branchName, commitOpts)
-	checkFatal(t, err)
-
-	// Create several commits in emile
-	for _, commit := range emileCommits {
-		_, err = commitSomething(repo, commit, commit, commitOpts)
-		checkFatal(t, err)
-	}
-
-	// Rebase onto master
-	rebase, err := performRebaseOnto(repo, "master", &rebaseOpts)
-	checkFatal(t, err)
-	defer rebase.Free()
-
-	// Finish the rebase properly
-	err = rebase.Finish()
-	checkFatal(t, err)
-
-	// Check history is in correct order
-	actualHistory, err := commitMsgsList(repo)
-	checkFatal(t, err)
-	assertStringList(t, expectedHistory, actualHistory)
-
-	checkAllCommitsSigned(t, entity, repo)
-}
-
-func checkAllCommitsSigned(t *testing.T, entity *openpgp.Entity, repo *Repository) {
-	head, err := headCommit(repo)
-	checkFatal(t, err)
-	defer head.Free()
-
-	parent := head
-
-	err = checkCommitSigned(t, entity, parent)
-	checkFatal(t, err)
-
-	for parent.ParentCount() != 0 {
-		parent = parent.Parent(0)
-		defer parent.Free()
-
-		err = checkCommitSigned(t, entity, parent)
-		checkFatal(t, err)
-	}
-}
-
-func checkCommitSigned(t *testing.T, entity *openpgp.Entity, commit *Commit) error {
-	t.Helper()
-
-	signature, signedData, err := commit.ExtractSignature()
-	if err != nil {
-		t.Logf("No signature on commit\n%s", commit.ContentToSign())
-		return err
-	}
-
-	_, err = openpgp.CheckArmoredDetachedSignature(openpgp.EntityList{entity}, strings.NewReader(signedData), bytes.NewBufferString(signature), nil)
-	if err != nil {
-		t.Logf("Commit is not signed correctly\n%s", commit.ContentToSign())
-		return err
-	}
-
-	return nil
 }
 
 // Utils
-func setupRepoForRebase(repo *Repository, masterCommit, branchName string, commitOpts commitOptions) error {
+func setupRepoForRebase(repo *Repository, masterCommit, branchName string) error {
 	// Create a new branch from master
 	err := createBranch(repo, branchName)
 	if err != nil {
@@ -337,7 +142,7 @@ func setupRepoForRebase(repo *Repository, masterCommit, branchName string, commi
 	}
 
 	// Create a commit in master
-	_, err = commitSomething(repo, masterCommit, masterCommit, commitOpts)
+	_, err = commitSomething(repo, masterCommit, masterCommit)
 	if err != nil {
 		return err
 	}
@@ -356,7 +161,7 @@ func setupRepoForRebase(repo *Repository, masterCommit, branchName string, commi
 	return nil
 }
 
-func performRebaseOnto(repo *Repository, branch string, rebaseOpts *RebaseOptions) (*Rebase, error) {
+func performRebaseOnto(repo *Repository, branch string) (*Rebase, error) {
 	master, err := repo.LookupBranch(branch, BranchLocal)
 	if err != nil {
 		return nil, err
@@ -370,14 +175,14 @@ func performRebaseOnto(repo *Repository, branch string, rebaseOpts *RebaseOption
 	defer onto.Free()
 
 	// Init rebase
-	rebase, err := repo.InitRebase(nil, nil, onto, rebaseOpts)
+	rebase, err := repo.InitRebase(nil, nil, onto, nil)
 	if err != nil {
 		return nil, err
 	}
 
 	// Check no operation has been started yet
 	rebaseOperationIndex, err := rebase.CurrentOperationIndex()
-	if rebaseOperationIndex != RebaseNoOperation && err != ErrRebaseNoOperation {
+	if err == nil {
 		return nil, errors.New("No operation should have been started yet")
 	}
 
@@ -471,7 +276,7 @@ func headTree(repo *Repository) (*Tree, error) {
 	return tree, nil
 }
 
-func commitSomething(repo *Repository, something, content string, commitOpts commitOptions) (*Oid, error) {
+func commitSomething(repo *Repository, something, content string) (*Oid, error) {
 	headCommit, err := headCommit(repo)
 	if err != nil {
 		return nil, err
@@ -510,44 +315,18 @@ func commitSomething(repo *Repository, something, content string, commitOpts com
 	}
 	defer newTree.Free()
 
+	if err != nil {
+		return nil, err
+	}
 	commit, err := repo.CreateCommit("HEAD", signature(), signature(), "Test rebase, Baby! "+something, newTree, headCommit)
 	if err != nil {
 		return nil, err
 	}
 
-	if commitOpts.CommitSigningCallback != nil {
-		commit, err := repo.LookupCommit(commit)
-		if err != nil {
-			return nil, err
-		}
-
-		oid, err := commit.WithSignatureUsing(commitOpts.CommitSigningCallback)
-		if err != nil {
-			return nil, err
-		}
-		newCommit, err := repo.LookupCommit(oid)
-		if err != nil {
-			return nil, err
-		}
-		head, err := repo.Head()
-		if err != nil {
-			return nil, err
-		}
-		_, err = repo.References.Create(
-			head.Name(),
-			newCommit.Id(),
-			true,
-			"repoint to signed commit",
-		)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	checkoutOpts := &CheckoutOptions{
+	opts := &CheckoutOpts{
 		Strategy: CheckoutRemoveUntracked | CheckoutForce,
 	}
-	err = repo.CheckoutIndex(index, checkoutOpts)
+	err = repo.CheckoutIndex(index, opts)
 	if err != nil {
 		return nil, err
 	}

refdb.go

@@ -13,34 +13,30 @@ import (
 )
 
 type Refdb struct {
-	doNotCompare
 	ptr *C.git_refdb
-	r   *Repository
 }
 
 type RefdbBackend struct {
-	doNotCompare
 	ptr *C.git_refdb_backend
 }
 
 func (v *Repository) NewRefdb() (refdb *Refdb, err error) {
-	var ptr *C.git_refdb
+	refdb = new(Refdb)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_refdb_new(&ptr, v.ptr)
+	ret := C.git_refdb_new(&refdb.ptr, v.ptr)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
-	refdb = &Refdb{ptr: ptr, r: v}
 	runtime.SetFinalizer(refdb, (*Refdb).Free)
 	return refdb, nil
 }
 
 func NewRefdbBackendFromC(ptr unsafe.Pointer) (backend *RefdbBackend) {
-	backend = &RefdbBackend{ptr: (*C.git_refdb_backend)(ptr)}
+	backend = &RefdbBackend{(*C.git_refdb_backend)(ptr)}
 	return backend
 }
 
@@ -49,8 +45,6 @@ func (v *Refdb) SetBackend(backend *RefdbBackend) (err error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_refdb_set_backend(v.ptr, backend.ptr)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(backend)
 	if ret < 0 {
 		backend.Free()
 		return MakeGitError(ret)
@@ -59,6 +53,5 @@ func (v *Refdb) SetBackend(backend *RefdbBackend) (err error) {
 }
 
 func (v *RefdbBackend) Free() {
-	runtime.SetFinalizer(v, nil)
 	C._go_git_refdb_backend_free(v.ptr)
 }

reference.go

@@ -17,13 +17,11 @@ const (
 )
 
 type Reference struct {
-	doNotCompare
 	ptr  *C.git_reference
 	repo *Repository
 }
 
 type ReferenceCollection struct {
-	doNotCompare
 	repo *Repository
 }
 
@@ -36,7 +34,6 @@ func (c *ReferenceCollection) Lookup(name string) (*Reference, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_reference_lookup(&ptr, c.repo.ptr, cname)
-	runtime.KeepAlive(c)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -62,8 +59,6 @@ func (c *ReferenceCollection) Create(name string, id *Oid, force bool, msg strin
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_reference_create(&ptr, c.repo.ptr, cname, id.toC(), cbool(force), cmsg)
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(id)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -92,7 +87,6 @@ func (c *ReferenceCollection) CreateSymbolic(name, target string, force bool, ms
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_reference_symbolic_create(&ptr, c.repo.ptr, cname, ctarget, cbool(force), cmsg)
-	runtime.KeepAlive(c)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
@@ -110,7 +104,6 @@ func (c *ReferenceCollection) EnsureLog(name string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_reference_ensure_log(c.repo.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -128,7 +121,6 @@ func (c *ReferenceCollection) HasLog(name string) (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_reference_has_log(c.repo.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -146,7 +138,6 @@ func (c *ReferenceCollection) Dwim(name string) (*Reference, error) {
 
 	var ptr *C.git_reference
 	ret := C.git_reference_dwim(&ptr, c.repo.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -178,7 +169,6 @@ func (v *Reference) SetSymbolicTarget(target string, msg string) (*Reference, er
 	}
 
 	ret := C.git_reference_symbolic_set_target(&ptr, v.ptr, ctarget, cmsg)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -201,7 +191,6 @@ func (v *Reference) SetTarget(target *Oid, msg string) (*Reference, error) {
 	}
 
 	ret := C.git_reference_set_target(&ptr, v.ptr, target.toC(), cmsg)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -216,7 +205,6 @@ func (v *Reference) Resolve() (*Reference, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_reference_resolve(&ptr, v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -241,7 +229,7 @@ func (v *Reference) Rename(name string, force bool, msg string) (*Reference, err
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_reference_rename(&ptr, v.ptr, cname, cbool(force), cmsg)
-	runtime.KeepAlive(v)
+
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -250,21 +238,16 @@ func (v *Reference) Rename(name string, force bool, msg string) (*Reference, err
 }
 
 func (v *Reference) Target() *Oid {
-	ret := newOidFromC(C.git_reference_target(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return newOidFromC(C.git_reference_target(v.ptr))
 }
 
 func (v *Reference) SymbolicTarget() string {
-	var ret string
 	cstr := C.git_reference_symbolic_target(v.ptr)
-
-	if cstr != nil {
-		return C.GoString(cstr)
+	if cstr == nil {
+		return ""
 	}
 
-	runtime.KeepAlive(v)
-	return ret
+	return C.GoString(cstr)
 }
 
 func (v *Reference) Delete() error {
@@ -272,7 +255,7 @@ func (v *Reference) Delete() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_reference_delete(v.ptr)
-	runtime.KeepAlive(v)
+
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -286,77 +269,55 @@ func (v *Reference) Peel(t ObjectType) (*Object, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	err := C.git_reference_peel(&cobj, v.ptr, C.git_object_t(t))
-	runtime.KeepAlive(v)
-	if err < 0 {
+	if err := C.git_reference_peel(&cobj, v.ptr, C.git_otype(t)); err < 0 {
 		return nil, MakeGitError(err)
 	}
 
 	return allocObject(cobj, v.repo), nil
 }
 
-// Owner returns a weak reference to the repository which owns this reference.
-// This won't keep the underlying repository alive, but it should still be
-// Freed.
+// Owner returns a weak reference to the repository which owns this
+// reference.
 func (v *Reference) Owner() *Repository {
-	repo := newRepositoryFromC(C.git_reference_owner(v.ptr))
-	runtime.KeepAlive(v)
-	repo.weak = true
-	return repo
+	return &Repository{
+		ptr: C.git_reference_owner(v.ptr),
+	}
 }
 
-// Cmp compares v to ref2. It returns 0 on equality, otherwise a
+// Cmp compares both references, retursn 0 on equality, otherwise a
 // stable sorting.
 func (v *Reference) Cmp(ref2 *Reference) int {
-	ret := int(C.git_reference_cmp(v.ptr, ref2.ptr))
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(ref2)
-	return ret
+	return int(C.git_reference_cmp(v.ptr, ref2.ptr))
 }
 
-// Shorthand returns a "human-readable" short reference name.
+// Shorthand returns a "human-readable" short reference name
 func (v *Reference) Shorthand() string {
-	ret := C.GoString(C.git_reference_shorthand(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return C.GoString(C.git_reference_shorthand(v.ptr))
 }
 
-// Name returns the full name of v.
 func (v *Reference) Name() string {
-	ret := C.GoString(C.git_reference_name(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return C.GoString(C.git_reference_name(v.ptr))
 }
 
 func (v *Reference) Type() ReferenceType {
-	ret := ReferenceType(C.git_reference_type(v.ptr))
-	runtime.KeepAlive(v)
-	return ret
+	return ReferenceType(C.git_reference_type(v.ptr))
 }
 
 func (v *Reference) IsBranch() bool {
-	ret := C.git_reference_is_branch(v.ptr) == 1
-	runtime.KeepAlive(v)
-	return ret
+	return C.git_reference_is_branch(v.ptr) == 1
 }
 
 func (v *Reference) IsRemote() bool {
-	ret := C.git_reference_is_remote(v.ptr) == 1
-	runtime.KeepAlive(v)
-	return ret
+	return C.git_reference_is_remote(v.ptr) == 1
 }
 
 func (v *Reference) IsTag() bool {
-	ret := C.git_reference_is_tag(v.ptr) == 1
-	runtime.KeepAlive(v)
-	return ret
+	return C.git_reference_is_tag(v.ptr) == 1
 }
 
 // IsNote checks if the reference is a note.
 func (v *Reference) IsNote() bool {
-	ret := C.git_reference_is_note(v.ptr) == 1
-	runtime.KeepAlive(v)
-	return ret
+	return C.git_reference_is_note(v.ptr) == 1
 }
 
 func (v *Reference) Free() {
@@ -365,13 +326,11 @@ func (v *Reference) Free() {
 }
 
 type ReferenceIterator struct {
-	doNotCompare
 	ptr  *C.git_reference_iterator
 	repo *Repository
 }
 
 type ReferenceNameIterator struct {
-	doNotCompare
 	*ReferenceIterator
 }
 
@@ -387,7 +346,9 @@ func (repo *Repository) NewReferenceIterator() (*ReferenceIterator, error) {
 		return nil, MakeGitError(ret)
 	}
 
-	return newReferenceIteratorFromC(ptr, repo), nil
+	iter := &ReferenceIterator{ptr: ptr, repo: repo}
+	runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
+	return iter, nil
 }
 
 // NewReferenceIterator creates a new branch iterator over reference names
@@ -402,7 +363,8 @@ func (repo *Repository) NewReferenceNameIterator() (*ReferenceNameIterator, erro
 		return nil, MakeGitError(ret)
 	}
 
-	iter := newReferenceIteratorFromC(ptr, repo)
+	iter := &ReferenceIterator{ptr: ptr, repo: repo}
+	runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
 	return iter.Names(), nil
 }
 
@@ -422,15 +384,17 @@ func (repo *Repository) NewReferenceIteratorGlob(glob string) (*ReferenceIterato
 		return nil, MakeGitError(ret)
 	}
 
-	return newReferenceIteratorFromC(ptr, repo), nil
+	iter := &ReferenceIterator{ptr: ptr}
+	runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
+	return iter, nil
 }
 
 func (i *ReferenceIterator) Names() *ReferenceNameIterator {
-	return &ReferenceNameIterator{ReferenceIterator: i}
+	return &ReferenceNameIterator{i}
 }
 
 // NextName retrieves the next reference name. If the iteration is over,
-// the returned error code is git.ErrorCodeIterOver
+// the returned error is git.ErrIterOver
 func (v *ReferenceNameIterator) Next() (string, error) {
 	var ptr *C.char
 
@@ -446,7 +410,7 @@ func (v *ReferenceNameIterator) Next() (string, error) {
 }
 
 // Next retrieves the next reference. If the iterationis over, the
-// returned error code is git.ErrorCodeIterOver
+// returned error is git.ErrIterOver
 func (v *ReferenceIterator) Next() (*Reference, error) {
 	var ptr *C.git_reference
 
@@ -461,22 +425,13 @@ func (v *ReferenceIterator) Next() (*Reference, error) {
 	return newReferenceFromC(ptr, v.repo), nil
 }
 
-func newReferenceIteratorFromC(ptr *C.git_reference_iterator, r *Repository) *ReferenceIterator {
-	iter := &ReferenceIterator{
-		ptr:  ptr,
-		repo: r,
-	}
-	runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
-	return iter
-}
-
 // Free the reference iterator
 func (v *ReferenceIterator) Free() {
 	runtime.SetFinalizer(v, nil)
 	C.git_reference_iterator_free(v.ptr)
 }
 
-// ReferenceNameIsValid returns whether the reference name is well-formed.
+// ReferenceIsValidName ensures the reference name is well-formed.
 //
 // Valid reference names must follow one of two patterns:
 //
@@ -486,56 +441,11 @@ func (v *ReferenceIterator) Free() {
 // 2. Names prefixed with "refs/" can be almost anything. You must avoid
 // the characters '~', '^', ':', ' \ ', '?', '[', and '*', and the sequences
 // ".." and " @ {" which have special meaning to revparse.
-func ReferenceNameIsValid(name string) (bool, error) {
+func ReferenceIsValidName(name string) bool {
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var valid C.int
-	ret := C.git_reference_name_is_valid(&valid, cname)
-	if ret < 0 {
-		return false, MakeGitError(ret)
+	if C.git_reference_is_valid_name(cname) == 1 {
+		return true
 	}
-	return valid == 1, nil
-}
-
-const (
-	// This should match GIT_REFNAME_MAX in src/refs.h
-	_refnameMaxLength = C.size_t(1024)
-)
-
-type ReferenceFormat uint
-
-const (
-	ReferenceFormatNormal           ReferenceFormat = C.GIT_REFERENCE_FORMAT_NORMAL
-	ReferenceFormatAllowOnelevel    ReferenceFormat = C.GIT_REFERENCE_FORMAT_ALLOW_ONELEVEL
-	ReferenceFormatRefspecPattern   ReferenceFormat = C.GIT_REFERENCE_FORMAT_REFSPEC_PATTERN
-	ReferenceFormatRefspecShorthand ReferenceFormat = C.GIT_REFERENCE_FORMAT_REFSPEC_SHORTHAND
-)
-
-// ReferenceNormalizeName normalizes the reference name and checks validity.
-//
-// This will normalize the reference name by removing any leading slash '/'
-// characters and collapsing runs of adjacent slashes between name components
-// into a single slash.
-//
-// See git_reference_symbolic_create() for rules about valid names.
-func ReferenceNormalizeName(name string, flags ReferenceFormat) (string, error) {
-	cname := C.CString(name)
-	defer C.free(unsafe.Pointer(cname))
-
-	buf := (*C.char)(C.malloc(_refnameMaxLength))
-	defer C.free(unsafe.Pointer(buf))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_reference_normalize_name(buf, _refnameMaxLength, cname, C.uint(flags))
-	if ecode < 0 {
-		return "", MakeGitError(ecode)
-	}
-
-	return C.GoString(buf), nil
+	return false
 }

reference_test.go

@@ -106,7 +106,7 @@ func TestReferenceIterator(t *testing.T) {
 		list = append(list, name)
 		name, err = nameIter.Next()
 	}
-	if !IsErrorCode(err, ErrorCodeIterOver) {
+	if !IsErrorCode(err, ErrIterOver) {
 		t.Fatal("Iteration not over")
 	}
 
@@ -122,7 +122,7 @@ func TestReferenceIterator(t *testing.T) {
 		count++
 		_, err = iter.Next()
 	}
-	if !IsErrorCode(err, ErrorCodeIterOver) {
+	if !IsErrorCode(err, ErrIterOver) {
 		t.Fatal("Iteration not over")
 	}
 
@@ -214,43 +214,16 @@ func TestIsNote(t *testing.T) {
 	}
 }
 
-func TestReferenceNameIsValid(t *testing.T) {
+func TestReferenceIsValidName(t *testing.T) {
 	t.Parallel()
-	valid, err := ReferenceNameIsValid("HEAD")
-	checkFatal(t, err)
-	if !valid {
+	if !ReferenceIsValidName("HEAD") {
 		t.Errorf("HEAD should be a valid reference name")
 	}
-	valid, err = ReferenceNameIsValid("HEAD1")
-	checkFatal(t, err)
-	if valid {
+	if ReferenceIsValidName("HEAD1") {
 		t.Errorf("HEAD1 should not be a valid reference name")
 	}
 }
 
-func TestReferenceNormalizeName(t *testing.T) {
-	t.Parallel()
-
-	ref, err := ReferenceNormalizeName("refs/heads//master", ReferenceFormatNormal)
-	checkFatal(t, err)
-
-	if ref != "refs/heads/master" {
-		t.Errorf("ReferenceNormalizeName(%q) = %q; want %q", "refs/heads//master", ref, "refs/heads/master")
-	}
-
-	ref, err = ReferenceNormalizeName("master", ReferenceFormatAllowOnelevel|ReferenceFormatRefspecShorthand)
-	checkFatal(t, err)
-
-	if ref != "master" {
-		t.Errorf("ReferenceNormalizeName(%q) = %q; want %q", "master", ref, "master")
-	}
-
-	ref, err = ReferenceNormalizeName("foo^", ReferenceFormatNormal)
-	if !IsErrorCode(err, ErrorCodeInvalidSpec) {
-		t.Errorf("foo^ should be invalid")
-	}
-}
-
 func compareStringList(t *testing.T, expected, actual []string) {
 	for i, v := range expected {
 		if actual[i] != v {

refspec.go

@@ -1,149 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-*/
-import "C"
-import (
-	"runtime"
-	"unsafe"
-)
-
-type Refspec struct {
-	doNotCompare
-	ptr *C.git_refspec
-}
-
-// ParseRefspec parses a given refspec string
-func ParseRefspec(input string, isFetch bool) (*Refspec, error) {
-	var ptr *C.git_refspec
-
-	cinput := C.CString(input)
-	defer C.free(unsafe.Pointer(cinput))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_refspec_parse(&ptr, cinput, cbool(isFetch))
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	spec := &Refspec{ptr: ptr}
-	runtime.SetFinalizer(spec, (*Refspec).Free)
-	return spec, nil
-}
-
-// Free releases a refspec object which has been created by ParseRefspec
-func (s *Refspec) Free() {
-	runtime.SetFinalizer(s, nil)
-	C.git_refspec_free(s.ptr)
-}
-
-// Direction returns the refspec's direction
-func (s *Refspec) Direction() ConnectDirection {
-	direction := C.git_refspec_direction(s.ptr)
-	return ConnectDirection(direction)
-}
-
-// Src returns the refspec's source specifier
-func (s *Refspec) Src() string {
-	var ret string
-	cstr := C.git_refspec_src(s.ptr)
-
-	if cstr != nil {
-		ret = C.GoString(cstr)
-	}
-
-	runtime.KeepAlive(s)
-	return ret
-}
-
-// Dst returns the refspec's destination specifier
-func (s *Refspec) Dst() string {
-	var ret string
-	cstr := C.git_refspec_dst(s.ptr)
-
-	if cstr != nil {
-		ret = C.GoString(cstr)
-	}
-
-	runtime.KeepAlive(s)
-	return ret
-}
-
-// Force returns the refspec's force-update setting
-func (s *Refspec) Force() bool {
-	force := C.git_refspec_force(s.ptr)
-	return force != 0
-}
-
-// String returns the refspec's string representation
-func (s *Refspec) String() string {
-	var ret string
-	cstr := C.git_refspec_string(s.ptr)
-
-	if cstr != nil {
-		ret = C.GoString(cstr)
-	}
-
-	runtime.KeepAlive(s)
-	return ret
-}
-
-// SrcMatches checks if a refspec's source descriptor matches a reference
-func (s *Refspec) SrcMatches(refname string) bool {
-	cname := C.CString(refname)
-	defer C.free(unsafe.Pointer(cname))
-
-	matches := C.git_refspec_src_matches(s.ptr, cname)
-	return matches != 0
-}
-
-// SrcMatches checks if a refspec's destination descriptor matches a reference
-func (s *Refspec) DstMatches(refname string) bool {
-	cname := C.CString(refname)
-	defer C.free(unsafe.Pointer(cname))
-
-	matches := C.git_refspec_dst_matches(s.ptr, cname)
-	return matches != 0
-}
-
-// Transform a reference to its target following the refspec's rules
-func (s *Refspec) Transform(refname string) (string, error) {
-	buf := C.git_buf{}
-
-	cname := C.CString(refname)
-	defer C.free(unsafe.Pointer(cname))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_refspec_transform(&buf, s.ptr, cname)
-	if ret < 0 {
-		return "", MakeGitError(ret)
-	}
-	defer C.git_buf_dispose(&buf)
-
-	return C.GoString(buf.ptr), nil
-}
-
-// Rtransform converts a target reference to its source reference following the
-// refspec's rules
-func (s *Refspec) Rtransform(refname string) (string, error) {
-	buf := C.git_buf{}
-
-	cname := C.CString(refname)
-	defer C.free(unsafe.Pointer(cname))
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_refspec_rtransform(&buf, s.ptr, cname)
-	if ret < 0 {
-		return "", MakeGitError(ret)
-	}
-	defer C.git_buf_dispose(&buf)
-
-	return C.GoString(buf.ptr), nil
-}

refspec_test.go

@@ -1,75 +0,0 @@
-package git
-
-import (
-	"testing"
-)
-
-func TestRefspec(t *testing.T) {
-	t.Parallel()
-
-	const (
-		input      = "+refs/heads/*:refs/remotes/origin/*"
-		mainLocal  = "refs/heads/main"
-		mainRemote = "refs/remotes/origin/main"
-	)
-
-	refspec, err := ParseRefspec(input, true)
-	checkFatal(t, err)
-
-	// Accessors
-
-	s := refspec.String()
-	if s != input {
-		t.Errorf("expected string %q, got %q", input, s)
-	}
-
-	if d := refspec.Direction(); d != ConnectDirectionFetch {
-		t.Errorf("expected fetch refspec, got direction %v", d)
-	}
-
-	if pat, expected := refspec.Src(), "refs/heads/*"; pat != expected {
-		t.Errorf("expected refspec src %q, got %q", expected, pat)
-	}
-
-	if pat, expected := refspec.Dst(), "refs/remotes/origin/*"; pat != expected {
-		t.Errorf("expected refspec dst %q, got %q", expected, pat)
-	}
-
-	if !refspec.Force() {
-		t.Error("expected refspec force flag")
-	}
-
-	// SrcMatches
-
-	if !refspec.SrcMatches(mainLocal) {
-		t.Errorf("refspec source did not match %q", mainLocal)
-	}
-
-	if refspec.SrcMatches("refs/tags/v1.0") {
-		t.Error("refspec source matched under refs/tags")
-	}
-
-	// DstMatches
-
-	if !refspec.DstMatches(mainRemote) {
-		t.Errorf("refspec destination did not match %q", mainRemote)
-	}
-
-	if refspec.DstMatches("refs/tags/v1.0") {
-		t.Error("refspec destination matched under refs/tags")
-	}
-
-	// Transforms
-
-	fromLocal, err := refspec.Transform(mainLocal)
-	checkFatal(t, err)
-	if fromLocal != mainRemote {
-		t.Errorf("transform by refspec returned %s; expected %s", fromLocal, mainRemote)
-	}
-
-	fromRemote, err := refspec.Rtransform(mainRemote)
-	checkFatal(t, err)
-	if fromRemote != mainLocal {
-		t.Errorf("rtransform by refspec returned %s; expected %s", fromRemote, mainLocal)
-	}
-}

remote_test.go

@@ -1,22 +1,8 @@
 package git
 
 import (
-	"bytes"
-	"crypto/rand"
-	"crypto/rsa"
-	"errors"
 	"fmt"
-	"io"
-	"net"
-	"os"
-	"os/exec"
-	"strings"
-	"sync"
 	"testing"
-	"time"
-
-	"github.com/google/shlex"
-	"golang.org/x/crypto/ssh"
 )
 
 func TestListRemotes(t *testing.T) {
@@ -24,9 +10,9 @@ func TestListRemotes(t *testing.T) {
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)
 
-	remote, err := repo.Remotes.Create("test", "git://foo/bar")
+	_, err := repo.Remotes.Create("test", "git://foo/bar")
+
 	checkFatal(t, err)
-	defer remote.Free()
 
 	expected := []string{
 		"test",
@@ -38,13 +24,13 @@ func TestListRemotes(t *testing.T) {
 	compareStringList(t, expected, actual)
 }
 
-func assertHostname(cert *Certificate, valid bool, hostname string, t *testing.T) error {
+func assertHostname(cert *Certificate, valid bool, hostname string, t *testing.T) ErrorCode {
 	if hostname != "github.com" {
-		t.Fatal("hostname does not match")
-		return errors.New("hostname does not match")
+		t.Fatal("Hostname does not match")
+		return ErrUser
 	}
 
-	return nil
+	return 0
 }
 
 func TestCertificateCheck(t *testing.T) {
@@ -54,11 +40,10 @@ func TestCertificateCheck(t *testing.T) {
 
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
-	defer remote.Free()
 
 	options := FetchOptions{
 		RemoteCallbacks: RemoteCallbacks{
-			CertificateCheckCallback: func(cert *Certificate, valid bool, hostname string) error {
+			CertificateCheckCallback: func(cert *Certificate, valid bool, hostname string) ErrorCode {
 				return assertHostname(cert, valid, hostname, t)
 			},
 		},
@@ -75,30 +60,6 @@ func TestRemoteConnect(t *testing.T) {
 
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
-	defer remote.Free()
-
-	err = remote.ConnectFetch(nil, nil, nil)
-	checkFatal(t, err)
-}
-
-func TestRemoteConnectOption(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	config, err := repo.Config()
-	checkFatal(t, err)
-	err = config.SetString("url.git@github.com:.insteadof", "https://github.com/")
-	checkFatal(t, err)
-
-	option, err := DefaultRemoteCreateOptions()
-	checkFatal(t, err)
-	option.Name = "origin"
-	option.Flags = RemoteCreateSkipInsteadof
-
-	remote, err := repo.Remotes.CreateWithOptions("https://github.com/libgit2/TestGitRepository", option)
-	checkFatal(t, err)
-	defer remote.Free()
 
 	err = remote.ConnectFetch(nil, nil, nil)
 	checkFatal(t, err)
@@ -111,7 +72,6 @@ func TestRemoteLs(t *testing.T) {
 
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
-	defer remote.Free()
 
 	err = remote.ConnectFetch(nil, nil, nil)
 	checkFatal(t, err)
@@ -131,7 +91,6 @@ func TestRemoteLsFiltering(t *testing.T) {
 
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
-	defer remote.Free()
 
 	err = remote.ConnectFetch(nil, nil, nil)
 	checkFatal(t, err)
@@ -164,13 +123,11 @@ func TestRemotePruneRefs(t *testing.T) {
 	err = config.SetBool("remote.origin.prune", true)
 	checkFatal(t, err)
 
-	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
+	_, err = repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
-	defer remote.Free()
 
-	remote, err = repo.Remotes.Lookup("origin")
+	remote, err := repo.Remotes.Lookup("origin")
 	checkFatal(t, err)
-	defer remote.Free()
 
 	if !remote.PruneRefs() {
 		t.Fatal("Expected remote to be configured to prune references")
@@ -189,7 +146,6 @@ func TestRemotePrune(t *testing.T) {
 
 	remoteRef, err := remoteRepo.CreateBranch("test-prune", commit, true)
 	checkFatal(t, err)
-	defer remoteRef.Free()
 
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)
@@ -201,14 +157,12 @@ func TestRemotePrune(t *testing.T) {
 	remoteUrl := fmt.Sprintf("file://%s", remoteRepo.Workdir())
 	remote, err := repo.Remotes.Create("origin", remoteUrl)
 	checkFatal(t, err)
-	defer remote.Free()
 
 	err = remote.Fetch([]string{"test-prune"}, nil, "")
 	checkFatal(t, err)
 
-	ref, err := repo.References.Create("refs/remotes/origin/test-prune", head, true, "remote reference")
+	_, err = repo.References.Create("refs/remotes/origin/test-prune", head, true, "remote reference")
 	checkFatal(t, err)
-	defer ref.Free()
 
 	err = remoteRef.Delete()
 	checkFatal(t, err)
@@ -218,7 +172,6 @@ func TestRemotePrune(t *testing.T) {
 
 	rr, err := repo.Remotes.Lookup("origin")
 	checkFatal(t, err)
-	defer rr.Free()
 
 	err = rr.ConnectFetch(nil, nil, nil)
 	checkFatal(t, err)
@@ -226,296 +179,8 @@ func TestRemotePrune(t *testing.T) {
 	err = rr.Prune(nil)
 	checkFatal(t, err)
 
-	ref, err = repo.References.Lookup("refs/remotes/origin/test-prune")
+	_, err = repo.References.Lookup("refs/remotes/origin/test-prune")
 	if err == nil {
-		ref.Free()
 		t.Fatal("Expected error getting a pruned reference")
 	}
 }
-
-func TestRemoteCredentialsCalled(t *testing.T) {
-	t.Parallel()
-
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	remote, err := repo.Remotes.CreateAnonymous("https://github.com/libgit2/non-existent")
-	checkFatal(t, err)
-	defer remote.Free()
-
-	errNonExistent := errors.New("non-existent repository")
-	fetchOpts := FetchOptions{
-		RemoteCallbacks: RemoteCallbacks{
-			CredentialsCallback: func(url, username string, allowedTypes CredentialType) (*Credential, error) {
-				return nil, errNonExistent
-			},
-		},
-	}
-
-	err = remote.Fetch(nil, &fetchOpts, "fetch")
-	if err != errNonExistent {
-		t.Fatalf("remote.Fetch() = %v, want %v", err, errNonExistent)
-	}
-}
-
-func newChannelPipe(t *testing.T, w io.Writer, wg *sync.WaitGroup) (*os.File, error) {
-	pr, pw, err := os.Pipe()
-	if err != nil {
-		return nil, err
-	}
-
-	wg.Add(1)
-	go func() {
-		_, err := io.Copy(w, pr)
-		if err != nil && err != io.EOF {
-			t.Logf("Failed to copy: %v", err)
-		}
-		wg.Done()
-	}()
-
-	return pw, nil
-}
-
-func startSSHServer(t *testing.T, hostKey ssh.Signer, authorizedKeys []ssh.PublicKey) net.Listener {
-	t.Helper()
-
-	marshaledAuthorizedKeys := make([][]byte, len(authorizedKeys))
-	for i, authorizedKey := range authorizedKeys {
-		marshaledAuthorizedKeys[i] = authorizedKey.Marshal()
-	}
-
-	config := &ssh.ServerConfig{
-		PublicKeyCallback: func(c ssh.ConnMetadata, pubKey ssh.PublicKey) (*ssh.Permissions, error) {
-			marshaledPubKey := pubKey.Marshal()
-			for _, marshaledAuthorizedKey := range marshaledAuthorizedKeys {
-				if bytes.Equal(marshaledPubKey, marshaledAuthorizedKey) {
-					return &ssh.Permissions{
-						// Record the public key used for authentication.
-						Extensions: map[string]string{
-							"pubkey-fp": ssh.FingerprintSHA256(pubKey),
-						},
-					}, nil
-				}
-			}
-			t.Logf("unknown public key for %q:\n\t%+v\n\t%+v\n", c.User(), pubKey.Marshal(), authorizedKeys)
-			return nil, fmt.Errorf("unknown public key for %q", c.User())
-		},
-	}
-	config.AddHostKey(hostKey)
-
-	listener, err := net.Listen("tcp", "localhost:0")
-	if err != nil {
-		t.Fatalf("Failed to listen for connection: %v", err)
-	}
-
-	go func() {
-		nConn, err := listener.Accept()
-		if err != nil {
-			if strings.Contains(err.Error(), "use of closed network connection") {
-				return
-			}
-			t.Logf("Failed to accept incoming connection: %v", err)
-			return
-		}
-		defer nConn.Close()
-
-		conn, chans, reqs, err := ssh.NewServerConn(nConn, config)
-		if err != nil {
-			t.Logf("failed to handshake: %+v, %+v", conn, err)
-			return
-		}
-
-		// The incoming Request channel must be serviced.
-		go func() {
-			for newRequest := range reqs {
-				t.Logf("new request %v", newRequest)
-			}
-		}()
-
-		// Service only the first channel request
-		newChannel := <-chans
-		defer func() {
-			for newChannel := range chans {
-				t.Logf("new channel %v", newChannel)
-				newChannel.Reject(ssh.UnknownChannelType, "server closing")
-			}
-		}()
-
-		// Channels have a type, depending on the application level
-		// protocol intended. In the case of a shell, the type is
-		// "session" and ServerShell may be used to present a simple
-		// terminal interface.
-		if newChannel.ChannelType() != "session" {
-			newChannel.Reject(ssh.UnknownChannelType, "unknown channel type")
-			return
-		}
-		channel, requests, err := newChannel.Accept()
-		if err != nil {
-			t.Logf("Could not accept channel: %v", err)
-			return
-		}
-		defer channel.Close()
-
-		// Sessions have out-of-band requests such as "shell",
-		// "pty-req" and "env".  Here we handle only the
-		// "exec" request.
-		req := <-requests
-		if req.Type != "exec" {
-			req.Reply(false, nil)
-			return
-		}
-		// RFC 4254 Section 6.5.
-		var payload struct {
-			Command string
-		}
-		if err := ssh.Unmarshal(req.Payload, &payload); err != nil {
-			t.Logf("invalid payload on channel %v: %v", channel, err)
-			req.Reply(false, nil)
-			return
-		}
-		args, err := shlex.Split(payload.Command)
-		if err != nil {
-			t.Logf("invalid command on channel %v: %v", channel, err)
-			req.Reply(false, nil)
-			return
-		}
-		if len(args) < 2 || (args[0] != "git-upload-pack" && args[0] != "git-receive-pack") {
-			t.Logf("invalid command (%v) on channel %v: %v", args, channel, err)
-			req.Reply(false, nil)
-			return
-		}
-		req.Reply(true, nil)
-
-		go func(in <-chan *ssh.Request) {
-			for req := range in {
-				t.Logf("draining request %v", req)
-			}
-		}(requests)
-
-		// The first parameter is the (absolute) path of the repository.
-		args[1] = "./testdata" + args[1]
-
-		cmd := exec.Command(args[0], args[1:]...)
-		cmd.Stdin = channel
-		var wg sync.WaitGroup
-		stdoutPipe, err := newChannelPipe(t, channel, &wg)
-		if err != nil {
-			t.Logf("Failed to create stdout pipe: %v", err)
-			return
-		}
-		cmd.Stdout = stdoutPipe
-		stderrPipe, err := newChannelPipe(t, channel.Stderr(), &wg)
-		if err != nil {
-			t.Logf("Failed to create stderr pipe: %v", err)
-			return
-		}
-		cmd.Stderr = stderrPipe
-
-		go func() {
-			wg.Wait()
-			channel.CloseWrite()
-		}()
-
-		err = cmd.Start()
-		if err != nil {
-			t.Logf("Failed to start %v: %v", args, err)
-			return
-		}
-
-		// Once the process has started, we need to close the write end of the
-		// pipes from this process so that we can know when the child has done
-		// writing to it.
-		stdoutPipe.Close()
-		stderrPipe.Close()
-
-		timer := time.AfterFunc(5*time.Second, func() {
-			t.Log("process timed out, terminating")
-			cmd.Process.Kill()
-		})
-		defer timer.Stop()
-
-		err = cmd.Wait()
-		if err != nil {
-			t.Logf("Failed to run %v: %v", args, err)
-			return
-		}
-	}()
-	return listener
-}
-
-func TestRemoteSSH(t *testing.T) {
-	t.Parallel()
-	pubKeyUsername := "testuser"
-
-	hostPrivKey, err := rsa.GenerateKey(rand.Reader, 512)
-	if err != nil {
-		t.Fatalf("Failed to generate the host RSA private key: %v", err)
-	}
-	hostSigner, err := ssh.NewSignerFromKey(hostPrivKey)
-	if err != nil {
-		t.Fatalf("Failed to generate SSH hostSigner: %v", err)
-	}
-
-	privKey, err := rsa.GenerateKey(rand.Reader, 512)
-	if err != nil {
-		t.Fatalf("Failed to generate the user RSA private key: %v", err)
-	}
-	signer, err := ssh.NewSignerFromKey(privKey)
-	if err != nil {
-		t.Fatalf("Failed to generate SSH signer: %v", err)
-	}
-	// This is in the format "xx:xx:xx:...", so we remove the colons so that it
-	// matches the fmt.Sprintf() below.
-	// Note that not all libssh2 implementations support the SHA256 fingerprint,
-	// so we use MD5 here for testing.
-	publicKeyFingerprint := strings.Replace(ssh.FingerprintLegacyMD5(hostSigner.PublicKey()), ":", "", -1)
-
-	listener := startSSHServer(t, hostSigner, []ssh.PublicKey{signer.PublicKey()})
-	defer listener.Close()
-
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	certificateCheckCallbackCalled := false
-	fetchOpts := FetchOptions{
-		RemoteCallbacks: RemoteCallbacks{
-			CertificateCheckCallback: func(cert *Certificate, valid bool, hostname string) error {
-				hostkeyFingerprint := fmt.Sprintf("%x", cert.Hostkey.HashMD5[:])
-				if hostkeyFingerprint != publicKeyFingerprint {
-					return fmt.Errorf("server hostkey %q, want %q", hostkeyFingerprint, publicKeyFingerprint)
-				}
-				certificateCheckCallbackCalled = true
-				return nil
-			},
-			CredentialsCallback: func(url, username string, allowedTypes CredentialType) (*Credential, error) {
-				if allowedTypes&(CredentialTypeSSHKey|CredentialTypeSSHCustom|CredentialTypeSSHMemory) != 0 {
-					return NewCredentialSSHKeyFromSigner(pubKeyUsername, signer)
-				}
-				if (allowedTypes & CredentialTypeUsername) != 0 {
-					return NewCredentialUsername(pubKeyUsername)
-				}
-				return nil, fmt.Errorf("unknown credential type %+v", allowedTypes)
-			},
-		},
-	}
-
-	remote, err := repo.Remotes.Create(
-		"origin",
-		fmt.Sprintf("ssh://%s/TestGitRepository", listener.Addr().String()),
-	)
-	checkFatal(t, err)
-	defer remote.Free()
-
-	err = remote.Fetch(nil, &fetchOpts, "")
-	checkFatal(t, err)
-	if !certificateCheckCallbackCalled {
-		t.Fatalf("CertificateCheckCallback was not called")
-	}
-
-	heads, err := remote.Ls()
-	checkFatal(t, err)
-
-	if len(heads) == 0 {
-		t.Error("Expected remote heads")
-	}
-}

repository.go

@@ -3,8 +3,6 @@ package git
 /*
 #include <git2.h>
 #include <git2/sys/repository.h>
-#include <git2/sys/commit.h>
-#include <string.h>
 */
 import "C"
 import (
@@ -14,7 +12,6 @@ import (
 
 // Repository
 type Repository struct {
-	doNotCompare
 	ptr *C.git_repository
 	// Remotes represents the collection of remotes and can be
 	// used to add, remove and configure remotes for this
@@ -22,10 +19,10 @@ type Repository struct {
 	Remotes RemoteCollection
 	// Submodules represents the collection of submodules and can
 	// be used to add, remove and configure submodules in this
-	// repository.
+	// repostiory.
 	Submodules SubmoduleCollection
 	// References represents the collection of references and can
-	// be used to create, remove or update references for this repository.
+	// be used to create, remove or update refernces for this repository.
 	References ReferenceCollection
 	// Notes represents the collection of notes and can be used to
 	// read, write and delete notes from this repository.
@@ -36,17 +33,12 @@ type Repository struct {
 	// Stashes represents the collection of stashes and can be used to
 	// save, apply and iterate over stash states in this repository.
 	Stashes StashCollection
-
-	// weak indicates that a repository is a weak pointer and should not be
-	// freed.
-	weak bool
 }
 
 func newRepositoryFromC(ptr *C.git_repository) *Repository {
 	repo := &Repository{ptr: ptr}
 
 	repo.Remotes.repo = repo
-	repo.Remotes.remotes = make(map[*C.git_remote]*Remote)
 	repo.Submodules.repo = repo
 	repo.References.repo = repo
 	repo.Notes.repo = repo
@@ -128,7 +120,6 @@ func NewRepositoryWrapOdb(odb *Odb) (repo *Repository, err error) {
 
 	var ptr *C.git_repository
 	ret := C.git_repository_wrap_odb(&ptr, odb.ptr)
-	runtime.KeepAlive(odb)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -138,18 +129,11 @@ func NewRepositoryWrapOdb(odb *Odb) (repo *Repository, err error) {
 
 func (v *Repository) SetRefdb(refdb *Refdb) {
 	C.git_repository_set_refdb(v.ptr, refdb.ptr)
-	runtime.KeepAlive(v)
 }
 
 func (v *Repository) Free() {
-	ptr := v.ptr
-	v.ptr = nil
 	runtime.SetFinalizer(v, nil)
-	v.Remotes.Free()
-	if v.weak {
-		return
-	}
-	C.git_repository_free(ptr)
+	C.git_repository_free(v.ptr)
 }
 
 func (v *Repository) Config() (*Config, error) {
@@ -159,7 +143,6 @@ func (v *Repository) Config() (*Config, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_repository_config(&config.ptr, v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -168,23 +151,6 @@ func (v *Repository) Config() (*Config, error) {
 	return config, nil
 }
 
-// SetConfig sets the configuration file for this repository.
-//
-// This configuration file will be used for all configuration queries involving
-// this repository.
-func (v *Repository) SetConfig(c *Config) error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_repository_set_config(v.ptr, c.ptr)
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(c)
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-	return nil
-}
-
 func (v *Repository) Index() (*Index, error) {
 	var ptr *C.git_index
 
@@ -196,7 +162,7 @@ func (v *Repository) Index() (*Index, error) {
 		return nil, MakeGitError(ret)
 	}
 
-	return newIndexFromC(ptr, v), nil
+	return newIndexFromC(ptr), nil
 }
 
 func (v *Repository) lookupType(id *Oid, t ObjectType) (*Object, error) {
@@ -205,23 +171,7 @@ func (v *Repository) lookupType(id *Oid, t ObjectType) (*Object, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_object_lookup(&ptr, v.ptr, id.toC(), C.git_object_t(t))
-	runtime.KeepAlive(id)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return allocObject(ptr, v), nil
-}
-
-func (v *Repository) lookupPrefixType(id *Oid, prefix uint, t ObjectType) (*Object, error) {
-	var ptr *C.git_object
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_object_lookup_prefix(&ptr, v.ptr, id.toC(), C.size_t(prefix), C.git_object_t(t))
-	runtime.KeepAlive(id)
+	ret := C.git_object_lookup(&ptr, v.ptr, id.toC(), C.git_otype(t))
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -233,28 +183,11 @@ func (v *Repository) Lookup(id *Oid) (*Object, error) {
 	return v.lookupType(id, ObjectAny)
 }
 
-// LookupPrefix looks up an object by its OID given a prefix of its identifier.
-func (v *Repository) LookupPrefix(id *Oid, prefix uint) (*Object, error) {
-	return v.lookupPrefixType(id, prefix, ObjectAny)
-}
-
 func (v *Repository) LookupTree(id *Oid) (*Tree, error) {
 	obj, err := v.lookupType(id, ObjectTree)
 	if err != nil {
 		return nil, err
 	}
-	defer obj.Free()
-
-	return obj.AsTree()
-}
-
-// LookupPrefixTree looks up a tree by its OID given a prefix of its identifier.
-func (v *Repository) LookupPrefixTree(id *Oid, prefix uint) (*Tree, error) {
-	obj, err := v.lookupPrefixType(id, prefix, ObjectTree)
-	if err != nil {
-		return nil, err
-	}
-	defer obj.Free()
 
 	return obj.AsTree()
 }
@@ -264,18 +197,6 @@ func (v *Repository) LookupCommit(id *Oid) (*Commit, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer obj.Free()
-
-	return obj.AsCommit()
-}
-
-// LookupPrefixCommit looks up a commit by its OID given a prefix of its identifier.
-func (v *Repository) LookupPrefixCommit(id *Oid, prefix uint) (*Commit, error) {
-	obj, err := v.lookupPrefixType(id, prefix, ObjectCommit)
-	if err != nil {
-		return nil, err
-	}
-	defer obj.Free()
 
 	return obj.AsCommit()
 }
@@ -285,18 +206,6 @@ func (v *Repository) LookupBlob(id *Oid) (*Blob, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer obj.Free()
-
-	return obj.AsBlob()
-}
-
-// LookupPrefixBlob looks up a blob by its OID given a prefix of its identifier.
-func (v *Repository) LookupPrefixBlob(id *Oid, prefix uint) (*Blob, error) {
-	obj, err := v.lookupPrefixType(id, prefix, ObjectBlob)
-	if err != nil {
-		return nil, err
-	}
-	defer obj.Free()
 
 	return obj.AsBlob()
 }
@@ -306,18 +215,6 @@ func (v *Repository) LookupTag(id *Oid) (*Tag, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer obj.Free()
-
-	return obj.AsTag()
-}
-
-// LookupPrefixTag looks up a tag by its OID given a prefix of its identifier.
-func (v *Repository) LookupPrefixTag(id *Oid, prefix uint) (*Tag, error) {
-	obj, err := v.lookupPrefixType(id, prefix, ObjectTag)
-	if err != nil {
-		return nil, err
-	}
-	defer obj.Free()
 
 	return obj.AsTag()
 }
@@ -344,7 +241,6 @@ func (v *Repository) SetHead(refname string) error {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_repository_set_head(v.ptr, cname)
-	runtime.KeepAlive(v)
 	if ecode != 0 {
 		return MakeGitError(ecode)
 	}
@@ -356,8 +252,6 @@ func (v *Repository) SetHeadDetached(id *Oid) error {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_repository_set_head_detached(v.ptr, id.toC())
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(id)
 	if ecode != 0 {
 		return MakeGitError(ecode)
 	}
@@ -369,7 +263,6 @@ func (v *Repository) IsHeadDetached() (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_repository_head_detached(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -382,7 +275,6 @@ func (v *Repository) IsHeadUnborn() (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_repository_head_unborn(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -394,7 +286,6 @@ func (v *Repository) IsEmpty() (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_repository_is_empty(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -407,7 +298,6 @@ func (v *Repository) IsShallow() (bool, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_repository_is_shallow(v.ptr)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return false, MakeGitError(ret)
 	}
@@ -478,173 +368,6 @@ func (v *Repository) CreateCommit(
 		authorSig, committerSig,
 		nil, cmsg, tree.cast_ptr, C.size_t(nparents), parentsarg)
 
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(oid)
-	runtime.KeepAlive(parents)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return oid, nil
-}
-
-// CreateCommitWithSignature creates a commit object from the given contents and
-// signature.
-func (v *Repository) CreateCommitWithSignature(
-	commitContent, signature, signatureField string,
-) (*Oid, error) {
-	cCommitContent := C.CString(commitContent)
-	defer C.free(unsafe.Pointer(cCommitContent))
-	var cSignature *C.char
-	if signature != "" {
-		cSignature = C.CString(string(signature))
-		defer C.free(unsafe.Pointer(cSignature))
-	}
-	var cSignatureField *C.char
-	if signatureField != "" {
-		cSignatureField = C.CString(string(signatureField))
-		defer C.free(unsafe.Pointer(cSignatureField))
-	}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	oid := new(Oid)
-	ret := C.git_commit_create_with_signature(oid.toC(), v.ptr, cCommitContent, cSignature, cSignatureField)
-
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(oid)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return oid, nil
-}
-
-// CreateCommitBuffer creates a commit and write it into a buffer.
-func (v *Repository) CreateCommitBuffer(
-	author, committer *Signature,
-	messageEncoding MessageEncoding,
-	message string,
-	tree *Tree,
-	parents ...*Commit,
-) ([]byte, error) {
-	cmsg := C.CString(message)
-	defer C.free(unsafe.Pointer(cmsg))
-	var cencoding *C.char
-	// Since the UTF-8 encoding is the default, pass in nil whenever UTF-8 is
-	// provided. That will cause the commit to not have an explicit header for
-	// it.
-	if messageEncoding != MessageEncodingUTF8 && messageEncoding != MessageEncoding("") {
-		cencoding = C.CString(string(messageEncoding))
-		defer C.free(unsafe.Pointer(cencoding))
-	}
-
-	var cparents []*C.git_commit = nil
-	var parentsarg **C.git_commit = nil
-
-	nparents := len(parents)
-	if nparents > 0 {
-		cparents = make([]*C.git_commit, nparents)
-		for i, v := range parents {
-			cparents[i] = v.cast_ptr
-		}
-		parentsarg = &cparents[0]
-	}
-
-	authorSig, err := author.toC()
-	if err != nil {
-		return nil, err
-	}
-	defer C.git_signature_free(authorSig)
-
-	committerSig, err := committer.toC()
-	if err != nil {
-		return nil, err
-	}
-	defer C.git_signature_free(committerSig)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
-	ret := C.git_commit_create_buffer(
-		&buf, v.ptr,
-		authorSig, committerSig,
-		cencoding, cmsg, tree.cast_ptr, C.size_t(nparents), parentsarg)
-
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(buf)
-	runtime.KeepAlive(parents)
-	if ret < 0 {
-		return nil, MakeGitError(ret)
-	}
-
-	return C.GoBytes(unsafe.Pointer(buf.ptr), C.int(buf.size)), nil
-}
-
-func (v *Repository) CreateCommitFromIds(
-	refname string, author, committer *Signature,
-	message string, tree *Oid, parents ...*Oid) (*Oid, error) {
-
-	oid := new(Oid)
-
-	var cref *C.char
-	if refname == "" {
-		cref = nil
-	} else {
-		cref = C.CString(refname)
-		defer C.free(unsafe.Pointer(cref))
-	}
-
-	cmsg := C.CString(message)
-	defer C.free(unsafe.Pointer(cmsg))
-
-	var parentsarg **C.git_oid = nil
-
-	nparents := len(parents)
-	if nparents > 0 {
-		// All this awful pointer arithmetic is needed to avoid passing a Go
-		// pointer to Go pointer into C. Other methods (like CreateCommits) are
-		// fine without this workaround because they are just passing Go pointers
-		// to C pointers, but arrays-of-pointers-to-git_oid are a bit special since
-		// both the array and the objects are allocated from Go.
-		var emptyOidPtr *C.git_oid
-		sizeofOidPtr := unsafe.Sizeof(emptyOidPtr)
-		parentsarg = (**C.git_oid)(C.calloc(C.size_t(uintptr(nparents)), C.size_t(sizeofOidPtr)))
-		defer C.free(unsafe.Pointer(parentsarg))
-		parentsptr := uintptr(unsafe.Pointer(parentsarg))
-		for _, v := range parents {
-			*(**C.git_oid)(unsafe.Pointer(parentsptr)) = v.toC()
-			parentsptr += sizeofOidPtr
-		}
-	}
-
-	authorSig, err := author.toC()
-	if err != nil {
-		return nil, err
-	}
-	defer C.git_signature_free(authorSig)
-
-	committerSig, err := committer.toC()
-	if err != nil {
-		return nil, err
-	}
-	defer C.git_signature_free(committerSig)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_commit_create_from_ids(
-		oid.toC(), v.ptr, cref,
-		authorSig, committerSig,
-		nil, cmsg, tree.toC(), C.size_t(nparents), parentsarg)
-
-	runtime.KeepAlive(v)
-	runtime.KeepAlive(oid)
-	runtime.KeepAlive(tree)
-	runtime.KeepAlive(parents)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -668,9 +391,7 @@ func (v *Repository) Odb() (odb *Odb, err error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_repository_odb(&odb.ptr, v.ptr)
-	runtime.KeepAlive(v)
-	if ret < 0 {
+	if ret := C.git_repository_odb(&odb.ptr, v.ptr); ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
@@ -679,21 +400,15 @@ func (v *Repository) Odb() (odb *Odb, err error) {
 }
 
 func (repo *Repository) Path() string {
-	s := C.GoString(C.git_repository_path(repo.ptr))
-	runtime.KeepAlive(repo)
-	return s
+	return C.GoString(C.git_repository_path(repo.ptr))
 }
 
 func (repo *Repository) IsBare() bool {
-	ret := C.git_repository_is_bare(repo.ptr) != 0
-	runtime.KeepAlive(repo)
-	return ret
+	return C.git_repository_is_bare(repo.ptr) != 0
 }
 
 func (repo *Repository) Workdir() string {
-	s := C.GoString(C.git_repository_workdir(repo.ptr))
-	runtime.KeepAlive(repo)
-	return s
+	return C.GoString(C.git_repository_workdir(repo.ptr))
 }
 
 func (repo *Repository) SetWorkdir(workdir string, updateGitlink bool) error {
@@ -706,7 +421,6 @@ func (repo *Repository) SetWorkdir(workdir string, updateGitlink bool) error {
 	if ret := C.git_repository_set_workdir(repo.ptr, cstr, cbool(updateGitlink)); ret < 0 {
 		return MakeGitError(ret)
 	}
-	runtime.KeepAlive(repo)
 
 	return nil
 }
@@ -720,7 +434,6 @@ func (v *Repository) TreeBuilder() (*TreeBuilder, error) {
 	if ret := C.git_treebuilder_new(&bld.ptr, v.ptr, nil); ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-
 	runtime.SetFinalizer(bld, (*TreeBuilder).Free)
 
 	bld.repo = v
@@ -761,10 +474,7 @@ func (r *Repository) State() RepositoryState {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := RepositoryState(C.git_repository_state(r.ptr))
-	runtime.KeepAlive(r)
-
-	return ret
+	return RepositoryState(C.git_repository_state(r.ptr))
 }
 
 func (r *Repository) StateCleanup() error {
@@ -772,22 +482,18 @@ func (r *Repository) StateCleanup() error {
 	defer runtime.UnlockOSThread()
 
 	cErr := C.git_repository_state_cleanup(r.ptr)
-	runtime.KeepAlive(r)
 	if cErr < 0 {
 		return MakeGitError(cErr)
 	}
 	return nil
 }
-
 func (r *Repository) AddGitIgnoreRules(rules string) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	crules := C.CString(rules)
 	defer C.free(unsafe.Pointer(crules))
-	ret := C.git_ignore_add_rule(r.ptr, crules)
-	runtime.KeepAlive(r)
-	if ret < 0 {
+	if ret := C.git_ignore_add_rule(r.ptr, crules); ret < 0 {
 		return MakeGitError(ret)
 	}
 	return nil
@@ -797,80 +503,8 @@ func (r *Repository) ClearGitIgnoreRules() error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_ignore_clear_internal_rules(r.ptr)
-	runtime.KeepAlive(r)
-	if ret < 0 {
+	if ret := C.git_ignore_clear_internal_rules(r.ptr); ret < 0 {
 		return MakeGitError(ret)
 	}
 	return nil
 }
-
-// Message retrieves git's prepared message.
-// Operations such as git revert/cherry-pick/merge with the -n option stop just
-// short of creating a commit with the changes and save their prepared message
-// in .git/MERGE_MSG so the next git-commit execution can present it to the
-// user for them to amend if they wish.
-//
-// Use this function to get the contents of this file. Don't forget to remove
-// the file after you create the commit.
-func (r *Repository) Message() (string, error) {
-	buf := C.git_buf{}
-	defer C.git_buf_dispose(&buf)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cErr := C.git_repository_message(&buf, r.ptr)
-	runtime.KeepAlive(r)
-	if cErr < 0 {
-		return "", MakeGitError(cErr)
-	}
-	return C.GoString(buf.ptr), nil
-}
-
-// RemoveMessage removes git's prepared message.
-func (r *Repository) RemoveMessage() error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cErr := C.git_repository_message_remove(r.ptr)
-	runtime.KeepAlive(r)
-	if cErr < 0 {
-		return MakeGitError(cErr)
-	}
-	return nil
-}
-
-type RepositoryItem int
-
-const (
-	RepositoryItemGitDir     RepositoryItem = C.GIT_REPOSITORY_ITEM_GITDIR
-	RepositoryItemWorkDir    RepositoryItem = C.GIT_REPOSITORY_ITEM_WORKDIR
-	RepositoryItemCommonDir  RepositoryItem = C.GIT_REPOSITORY_ITEM_COMMONDIR
-	RepositoryItemIndex      RepositoryItem = C.GIT_REPOSITORY_ITEM_INDEX
-	RepositoryItemObjects    RepositoryItem = C.GIT_REPOSITORY_ITEM_OBJECTS
-	RepositoryItemRefs       RepositoryItem = C.GIT_REPOSITORY_ITEM_REFS
-	RepositoryItemPackedRefs RepositoryItem = C.GIT_REPOSITORY_ITEM_PACKED_REFS
-	RepositoryItemRemotes    RepositoryItem = C.GIT_REPOSITORY_ITEM_REMOTES
-	RepositoryItemConfig     RepositoryItem = C.GIT_REPOSITORY_ITEM_CONFIG
-	RepositoryItemInfo       RepositoryItem = C.GIT_REPOSITORY_ITEM_INFO
-	RepositoryItemHooks      RepositoryItem = C.GIT_REPOSITORY_ITEM_HOOKS
-	RepositoryItemLogs       RepositoryItem = C.GIT_REPOSITORY_ITEM_LOGS
-	RepositoryItemModules    RepositoryItem = C.GIT_REPOSITORY_ITEM_MODULES
-	RepositoryItemWorkTrees  RepositoryItem = C.GIT_REPOSITORY_ITEM_WORKTREES
-)
-
-func (r *Repository) ItemPath(item RepositoryItem) (string, error) {
-	var c_buf C.git_buf
-	defer C.git_buf_dispose(&c_buf)
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ret := C.git_repository_item_path(&c_buf, r.ptr, C.git_repository_item_t(item))
-	runtime.KeepAlive(r)
-	if ret < 0 {
-		return "", MakeGitError(ret)
-	}
-	return C.GoString(c_buf.ptr), nil
-}

repository_test.go

@@ -1,159 +0,0 @@
-package git
-
-import (
-	"testing"
-	"time"
-)
-
-func TestCreateCommitBuffer(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	loc, err := time.LoadLocation("Europe/Berlin")
-	checkFatal(t, err)
-	sig := &Signature{
-		Name:  "Rand Om Hacker",
-		Email: "random@hacker.com",
-		When:  time.Date(2013, 03, 06, 14, 30, 0, 0, loc),
-	}
-
-	idx, err := repo.Index()
-	checkFatal(t, err)
-	err = idx.AddByPath("README")
-	checkFatal(t, err)
-	err = idx.Write()
-	checkFatal(t, err)
-	treeId, err := idx.WriteTree()
-	checkFatal(t, err)
-
-	message := "This is a commit\n"
-	tree, err := repo.LookupTree(treeId)
-	checkFatal(t, err)
-
-	for encoding, expected := range map[MessageEncoding]string{
-		MessageEncodingUTF8: `tree b7119b11e8ef7a1a5a34d3ac87f5b075228ac81e
-author Rand Om Hacker <random@hacker.com> 1362576600 +0100
-committer Rand Om Hacker <random@hacker.com> 1362576600 +0100
-
-This is a commit
-`,
-		MessageEncoding("ASCII"): `tree b7119b11e8ef7a1a5a34d3ac87f5b075228ac81e
-author Rand Om Hacker <random@hacker.com> 1362576600 +0100
-committer Rand Om Hacker <random@hacker.com> 1362576600 +0100
-encoding ASCII
-
-This is a commit
-`,
-	} {
-		encoding := encoding
-		expected := expected
-		t.Run(string(encoding), func(t *testing.T) {
-			buf, err := repo.CreateCommitBuffer(sig, sig, encoding, message, tree)
-			checkFatal(t, err)
-
-			if expected != string(buf) {
-				t.Errorf("mismatched commit buffer, expected %v, got %v", expected, string(buf))
-			}
-		})
-	}
-}
-
-func TestCreateCommitFromIds(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	loc, err := time.LoadLocation("Europe/Berlin")
-	checkFatal(t, err)
-	sig := &Signature{
-		Name:  "Rand Om Hacker",
-		Email: "random@hacker.com",
-		When:  time.Date(2013, 03, 06, 14, 30, 0, 0, loc),
-	}
-
-	idx, err := repo.Index()
-	checkFatal(t, err)
-	err = idx.AddByPath("README")
-	checkFatal(t, err)
-	err = idx.Write()
-	checkFatal(t, err)
-	treeId, err := idx.WriteTree()
-	checkFatal(t, err)
-
-	message := "This is a commit\n"
-	tree, err := repo.LookupTree(treeId)
-	checkFatal(t, err)
-	expectedCommitId, err := repo.CreateCommit("HEAD", sig, sig, message, tree)
-	checkFatal(t, err)
-
-	commitId, err := repo.CreateCommitFromIds("", sig, sig, message, treeId)
-	checkFatal(t, err)
-
-	if !expectedCommitId.Equal(commitId) {
-		t.Errorf("mismatched commit ids, expected %v, got %v", expectedCommitId.String(), commitId.String())
-	}
-}
-
-func TestRepositorySetConfig(t *testing.T) {
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	loc, err := time.LoadLocation("Europe/Berlin")
-	checkFatal(t, err)
-	sig := &Signature{
-		Name:  "Rand Om Hacker",
-		Email: "random@hacker.com",
-		When:  time.Date(2013, 03, 06, 14, 30, 0, 0, loc),
-	}
-
-	idx, err := repo.Index()
-	checkFatal(t, err)
-	err = idx.AddByPath("README")
-
-	treeId, err := idx.WriteTree()
-	checkFatal(t, err)
-
-	message := "This is a commit\n"
-	tree, err := repo.LookupTree(treeId)
-	checkFatal(t, err)
-	_, err = repo.CreateCommit("HEAD", sig, sig, message, tree)
-	checkFatal(t, err)
-
-	repoConfig, err := repo.Config()
-	checkFatal(t, err)
-
-	temp := Config{}
-	localConfig, err := temp.OpenLevel(repoConfig, ConfigLevelLocal)
-	checkFatal(t, err)
-	repoConfig = nil
-
-	err = repo.SetConfig(localConfig)
-	checkFatal(t, err)
-
-	configFieldName := "core.filemode"
-	err = localConfig.SetBool(configFieldName, true)
-	checkFatal(t, err)
-
-	localConfig = nil
-
-	repoConfig, err = repo.Config()
-	checkFatal(t, err)
-
-	result, err := repoConfig.LookupBool(configFieldName)
-	checkFatal(t, err)
-	if result != true {
-		t.Fatal("result must be true")
-	}
-}
-
-func TestRepositoryItemPath(t *testing.T) {
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	gitDir, err := repo.ItemPath(RepositoryItemGitDir)
-	checkFatal(t, err)
-	if gitDir == "" {
-		t.Error("expected not empty gitDir")
-	}
-}

reset.go

@@ -14,18 +14,11 @@ const (
 	ResetHard  ResetType = C.GIT_RESET_HARD
 )
 
-func (r *Repository) ResetToCommit(commit *Commit, resetType ResetType, opts *CheckoutOptions) error {
+func (r *Repository) ResetToCommit(commit *Commit, resetType ResetType, opts *CheckoutOpts) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
+	ret := C.git_reset(r.ptr, commit.ptr, C.git_reset_t(resetType), opts.toC())
 
-	var err error
-	cOpts := populateCheckoutOptions(&C.git_checkout_options{}, opts, &err)
-	defer freeCheckoutOptions(cOpts)
-
-	ret := C.git_reset(r.ptr, commit.ptr, C.git_reset_t(resetType), cOpts)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}

reset_test.go

@@ -8,8 +8,6 @@ import (
 func TestResetToCommit(t *testing.T) {
 	t.Parallel()
 	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
 	seedTestRepo(t, repo)
 	// create commit to reset to
 	commitId, _ := updateReadme(t, repo, "testing reset")
@@ -37,7 +35,7 @@ func TestResetToCommit(t *testing.T) {
 	commitToResetTo, err := repo.LookupCommit(commitId)
 	checkFatal(t, err)
 
-	repo.ResetToCommit(commitToResetTo, ResetHard, &CheckoutOptions{})
+	repo.ResetToCommit(commitToResetTo, ResetHard, &CheckoutOpts{})
 
 	// check that the file now reads "testing reset" like it did before
 	bytes, err := ioutil.ReadFile(pathInRepo(repo, "README"))

revert.go

@@ -1,104 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-*/
-import "C"
-import (
-	"runtime"
-)
-
-// RevertOptions contains options for performing a revert
-type RevertOptions struct {
-	Mainline        uint
-	MergeOptions    MergeOptions
-	CheckoutOptions CheckoutOptions
-}
-
-func populateRevertOptions(copts *C.git_revert_options, opts *RevertOptions, errorTarget *error) *C.git_revert_options {
-	C.git_revert_options_init(copts, C.GIT_REVERT_OPTIONS_VERSION)
-	if opts == nil {
-		return nil
-	}
-	copts.mainline = C.uint(opts.Mainline)
-	populateMergeOptions(&copts.merge_opts, &opts.MergeOptions)
-	populateCheckoutOptions(&copts.checkout_opts, &opts.CheckoutOptions, errorTarget)
-	return copts
-}
-
-func revertOptionsFromC(copts *C.git_revert_options) RevertOptions {
-	return RevertOptions{
-		Mainline:        uint(copts.mainline),
-		MergeOptions:    mergeOptionsFromC(&copts.merge_opts),
-		CheckoutOptions: checkoutOptionsFromC(&copts.checkout_opts),
-	}
-}
-
-func freeRevertOptions(copts *C.git_revert_options) {
-	if copts != nil {
-		return
-	}
-	freeMergeOptions(&copts.merge_opts)
-	freeCheckoutOptions(&copts.checkout_opts)
-}
-
-// DefaultRevertOptions initialises a RevertOptions struct with default values
-func DefaultRevertOptions() (RevertOptions, error) {
-	copts := C.git_revert_options{}
-
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	ecode := C.git_revert_options_init(&copts, C.GIT_REVERT_OPTIONS_VERSION)
-	if ecode < 0 {
-		return RevertOptions{}, MakeGitError(ecode)
-	}
-
-	defer freeRevertOptions(&copts)
-	return revertOptionsFromC(&copts), nil
-}
-
-// Revert the provided commit leaving the index updated with the results of the revert
-func (r *Repository) Revert(commit *Commit, revertOptions *RevertOptions) error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var err error
-	cOpts := populateRevertOptions(&C.git_revert_options{}, revertOptions, &err)
-	defer freeRevertOptions(cOpts)
-
-	ret := C.git_revert(r.ptr, commit.cast_ptr, cOpts)
-	runtime.KeepAlive(r)
-	runtime.KeepAlive(commit)
-
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
-	if ret < 0 {
-		return MakeGitError(ret)
-	}
-
-	return nil
-}
-
-// RevertCommit reverts the provided commit against "ourCommit"
-// The returned index contains the result of the revert and should be freed
-func (r *Repository) RevertCommit(revertCommit *Commit, ourCommit *Commit, mainline uint, mergeOptions *MergeOptions) (*Index, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	cOpts := populateMergeOptions(&C.git_merge_options{}, mergeOptions)
-	defer freeMergeOptions(cOpts)
-
-	var index *C.git_index
-
-	ecode := C.git_revert_commit(&index, r.ptr, revertCommit.cast_ptr, ourCommit.cast_ptr, C.uint(mainline), cOpts)
-	runtime.KeepAlive(revertCommit)
-	runtime.KeepAlive(ourCommit)
-
-	if ecode < 0 {
-		return nil, MakeGitError(ecode)
-	}
-
-	return newIndexFromC(index, r), nil
-}

revert_test.go

@@ -1,76 +0,0 @@
-package git
-
-import (
-	"testing"
-)
-
-const (
-	expectedRevertedReadmeContents = "foo\n"
-)
-
-func TestRevert(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-	commitID, _ := updateReadme(t, repo, content)
-
-	commit, err := repo.LookupCommit(commitID)
-	checkFatal(t, err)
-
-	revertOptions, err := DefaultRevertOptions()
-	checkFatal(t, err)
-
-	err = repo.Revert(commit, &revertOptions)
-	checkFatal(t, err)
-
-	actualReadmeContents := readReadme(t, repo)
-
-	if actualReadmeContents != expectedRevertedReadmeContents {
-		t.Fatalf(`README has incorrect contents after revert. Expected: "%v", Actual: "%v"`,
-			expectedRevertedReadmeContents, actualReadmeContents)
-	}
-
-	state := repo.State()
-	if state != RepositoryStateRevert {
-		t.Fatalf("Incorrect repository state. Expected: %v, Actual: %v", RepositoryStateRevert, state)
-	}
-
-	err = repo.StateCleanup()
-	checkFatal(t, err)
-
-	state = repo.State()
-	if state != RepositoryStateNone {
-		t.Fatalf("Incorrect repository state. Expected: %v, Actual: %v", RepositoryStateNone, state)
-	}
-}
-
-func TestRevertCommit(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-	commitID, _ := updateReadme(t, repo, content)
-
-	commit, err := repo.LookupCommit(commitID)
-	checkFatal(t, err)
-
-	revertOptions, err := DefaultRevertOptions()
-	checkFatal(t, err)
-
-	index, err := repo.RevertCommit(commit, commit, 0, &revertOptions.MergeOptions)
-	checkFatal(t, err)
-	defer index.Free()
-
-	err = repo.CheckoutIndex(index, &revertOptions.CheckoutOptions)
-	checkFatal(t, err)
-
-	actualReadmeContents := readReadme(t, repo)
-
-	if actualReadmeContents != expectedRevertedReadmeContents {
-		t.Fatalf(`README has incorrect contents after revert. Expected: "%v", Actual: "%v"`,
-			expectedRevertedReadmeContents, actualReadmeContents)
-	}
-}

revparse.go

@@ -20,7 +20,6 @@ const (
 )
 
 type Revspec struct {
-	doNotCompare
 	to    *Object
 	from  *Object
 	flags RevparseFlag

script/build-libgit2-dynamic.sh

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-set -e
-
-exec "$(dirname "$0")/build-libgit2.sh" --dynamic

script/build-libgit2-static.sh

@@ -1,5 +1,19 @@
 #!/bin/sh
 
-set -e
+set -ex
 
-exec "$(dirname "$0")/build-libgit2.sh" --static
+VENDORED_PATH=vendor/libgit2
+
+cd $VENDORED_PATH &&
+mkdir -p install/lib &&
+mkdir -p build &&
+cd build &&
+cmake -DTHREADSAFE=ON \
+      -DBUILD_CLAR=OFF \
+      -DBUILD_SHARED_LIBS=OFF \
+      -DCMAKE_C_FLAGS=-fPIC \
+      -DCMAKE_BUILD_TYPE="RelWithDebInfo" \
+      -DCMAKE_INSTALL_PREFIX=../install \
+      .. &&
+
+cmake --build .

script/build-libgit2.sh

@@ -1,90 +0,0 @@
-#!/bin/sh
-
-# Since CMake cannot build the static and dynamic libraries in the same
-# directory, this script helps build both static and dynamic versions of it and
-# have the common flags in one place instead of split between two places.
-
-set -e
-
-usage() {
-	echo "Usage: $0 <--dynamic|--static> [--system]">&2
-	exit 1
-}
-
-if [ "$#" -eq "0" ]; then
-	usage
-fi
-
-ROOT=${ROOT-"$(cd "$(dirname "$0")/.." && echo "${PWD}")"}
-VENDORED_PATH=${VENDORED_PATH-"${ROOT}/vendor/libgit2"}
-BUILD_SYSTEM=OFF
-
-while [ $# -gt 0 ]; do
-	case "$1" in
-		--static)
-			BUILD_PATH="${ROOT}/static-build"
-			BUILD_SHARED_LIBS=OFF
-			;;
-
-		--dynamic)
-			BUILD_PATH="${ROOT}/dynamic-build"
-			BUILD_SHARED_LIBS=ON
-			;;
-
-		--system)
-			BUILD_SYSTEM=ON
-			;;
-
-		*)
-			usage
-			;;
-	esac
-	shift
-done
-
-if [ -z "${BUILD_SHARED_LIBS}" ]; then
-	usage
-fi
-
-if [ -n "${BUILD_LIBGIT_REF}" ]; then
-	git -C "${VENDORED_PATH}" checkout "${BUILD_LIBGIT_REF}"
-	trap "git submodule update --init" EXIT
-fi
-
-BUILD_DEPRECATED_HARD="ON"
-if [ "${BUILD_SYSTEM}" = "ON" ]; then
-	BUILD_INSTALL_PREFIX=${SYSTEM_INSTALL_PREFIX-"/usr"}
-	# Most system-wide installations won't intentionally omit deprecated symbols.
-	BUILD_DEPRECATED_HARD="OFF"
-else
-	BUILD_INSTALL_PREFIX="${BUILD_PATH}/install"
-	mkdir -p "${BUILD_PATH}/install/lib"
-fi
-
-USE_BUNDLED_ZLIB="ON"
-if [ "${USE_CHROMIUM_ZLIB}" = "ON" ]; then
-	USE_BUNDLED_ZLIB="Chromium"
-fi
-
-mkdir -p "${BUILD_PATH}/build" &&
-cd "${BUILD_PATH}/build" &&
-cmake -DTHREADSAFE=ON \
-      -DBUILD_CLAR=OFF \
-      -DBUILD_SHARED_LIBS"=${BUILD_SHARED_LIBS}" \
-      -DREGEX_BACKEND=builtin \
-      -DUSE_BUNDLED_ZLIB="${USE_BUNDLED_ZLIB}" \
-      -DUSE_HTTPS=OFF \
-      -DUSE_SSH=OFF \
-      -DCMAKE_C_FLAGS=-fPIC \
-      -DCMAKE_BUILD_TYPE="RelWithDebInfo" \
-      -DCMAKE_INSTALL_PREFIX="${BUILD_INSTALL_PREFIX}" \
-      -DCMAKE_INSTALL_LIBDIR="lib" \
-      -DDEPRECATE_HARD="${BUILD_DEPRECATE_HARD}" \
-      "${VENDORED_PATH}"
-
-if which make nproc >/dev/null && [ -f Makefile ]; then
-	# Make the build parallel if make is available and cmake used Makefiles.
-	exec make "-j$(nproc --all)" install
-else
-	exec cmake --build . --target install
-fi

script/install-libgit2.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Install libgit2 to go libgit2 in dynamic mode on Travis
+# Install libgit2 to git2go in dynamic mode on Travis
 #
 
 set -ex

settings.go

@@ -18,20 +18,10 @@ int _go_git_opts_set_size_t(int opt, size_t val)
     return git_libgit2_opts(opt, val);
 }
 
-int _go_git_opts_set_cache_object_limit(git_object_t type, size_t size)
-{
-    return git_libgit2_opts(GIT_OPT_SET_CACHE_OBJECT_LIMIT, type, size);
-}
-
 int _go_git_opts_get_size_t(int opt, size_t *val)
 {
     return git_libgit2_opts(opt, val);
 }
-
-int _go_git_opts_get_size_t_size_t(int opt, size_t *val1, size_t *val2)
-{
-    return git_libgit2_opts(opt, val1, val2);
-}
 */
 import "C"
 import (
@@ -41,7 +31,7 @@ import (
 
 func SearchPath(level ConfigLevel) (string, error) {
 	var buf C.git_buf
-	defer C.git_buf_dispose(&buf)
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -85,55 +75,6 @@ func SetMwindowMappedLimit(size int) error {
 	return setSizet(C.GIT_OPT_SET_MWINDOW_MAPPED_LIMIT, size)
 }
 
-func EnableCaching(enabled bool) error {
-	if enabled {
-		return setSizet(C.GIT_OPT_ENABLE_CACHING, 1)
-	} else {
-		return setSizet(C.GIT_OPT_ENABLE_CACHING, 0)
-	}
-}
-
-func EnableStrictHashVerification(enabled bool) error {
-	if enabled {
-		return setSizet(C.GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, 1)
-	} else {
-		return setSizet(C.GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, 0)
-	}
-}
-
-func EnableFsyncGitDir(enabled bool) error {
-	if enabled {
-		return setSizet(C.GIT_OPT_ENABLE_FSYNC_GITDIR, 1)
-	} else {
-		return setSizet(C.GIT_OPT_ENABLE_FSYNC_GITDIR, 0)
-	}
-}
-
-func CachedMemory() (current int, allowed int, err error) {
-	return getSizetSizet(C.GIT_OPT_GET_CACHED_MEMORY)
-}
-
-// deprecated: You should use `CachedMemory()` instead.
-func GetCachedMemory() (current int, allowed int, err error) {
-	return CachedMemory()
-}
-
-func SetCacheMaxSize(maxSize int) error {
-	return setSizet(C.GIT_OPT_SET_CACHE_MAX_SIZE, maxSize)
-}
-
-func SetCacheObjectLimit(objectType ObjectType, size int) error {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	err := C._go_git_opts_set_cache_object_limit(C.git_object_t(objectType), C.size_t(size))
-	if err < 0 {
-		return MakeGitError(err)
-	}
-
-	return nil
-}
-
 func getSizet(opt C.int) (int, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -147,19 +88,6 @@ func getSizet(opt C.int) (int, error) {
 	return int(val), nil
 }
 
-func getSizetSizet(opt C.int) (int, int, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	var val1, val2 C.size_t
-	err := C._go_git_opts_get_size_t_size_t(opt, &val1, &val2)
-	if err < 0 {
-		return 0, 0, MakeGitError(err)
-	}
-
-	return int(val1), int(val2), nil
-}
-
 func setSizet(opt C.int, val int) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()

settings_test.go

@@ -48,52 +48,3 @@ func TestMmapSizes(t *testing.T) {
 		t.Fatal("Sizes don't match")
 	}
 }
-
-func TestEnableCaching(t *testing.T) {
-	err := EnableCaching(false)
-	checkFatal(t, err)
-
-	err = EnableCaching(true)
-	checkFatal(t, err)
-}
-
-func TestEnableStrictHashVerification(t *testing.T) {
-	err := EnableStrictHashVerification(false)
-	checkFatal(t, err)
-
-	err = EnableStrictHashVerification(true)
-	checkFatal(t, err)
-}
-
-func TestEnableFsyncGitDir(t *testing.T) {
-	err := EnableFsyncGitDir(false)
-	checkFatal(t, err)
-
-	err = EnableFsyncGitDir(true)
-	checkFatal(t, err)
-}
-
-func TestCachedMemory(t *testing.T) {
-	current, allowed, err := CachedMemory()
-	checkFatal(t, err)
-
-	if current < 0 {
-		t.Fatal("current < 0")
-	}
-
-	if allowed < 0 {
-		t.Fatal("allowed < 0")
-	}
-}
-
-func TestSetCacheMaxSize(t *testing.T) {
-	err := SetCacheMaxSize(0)
-	checkFatal(t, err)
-
-	err = SetCacheMaxSize(1024 * 1024)
-	checkFatal(t, err)
-
-	// revert to default 256MB
-	err = SetCacheMaxSize(256 * 1024 * 1024)
-	checkFatal(t, err)
-}

signature.go

@@ -17,10 +17,6 @@ type Signature struct {
 }
 
 func newSignatureFromC(sig *C.git_signature) *Signature {
-	if sig == nil {
-		return nil
-	}
-
 	// git stores minutes, go wants seconds
 	loc := time.FixedZone("", int(sig.when.offset)*60)
 	return &Signature{
@@ -30,7 +26,7 @@ func newSignatureFromC(sig *C.git_signature) *Signature {
 	}
 }
 
-// Offset returns the time zone offset of v.When in minutes, which is what git wants.
+// the offset in mintes, which is what git wants
 func (v *Signature) Offset() int {
 	_, offset := v.When.Zone()
 	return offset / 60
@@ -67,7 +63,6 @@ func (repo *Repository) DefaultSignature() (*Signature, error) {
 	defer runtime.UnlockOSThread()
 
 	cErr := C.git_signature_default(&out, repo.ptr)
-	runtime.KeepAlive(repo)
 	if cErr < 0 {
 		return nil, MakeGitError(cErr)
 	}

ssh.go

@@ -1,250 +0,0 @@
-package git
-
-/*
-#include <git2.h>
-
-#include <git2/sys/credential.h>
-*/
-import "C"
-import (
-	"crypto/md5"
-	"crypto/sha1"
-	"crypto/sha256"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net"
-	"net/url"
-	"runtime"
-	"strings"
-	"unsafe"
-
-	"golang.org/x/crypto/ssh"
-)
-
-// RegisterManagedSSHTransport registers a Go-native implementation of an SSH
-// transport that doesn't rely on any system libraries (e.g. libssh2).
-//
-// If Shutdown or ReInit are called, make sure that the smart transports are
-// freed before it.
-func RegisterManagedSSHTransport(protocol string) (*RegisteredSmartTransport, error) {
-	return NewRegisteredSmartTransport(protocol, false, sshSmartSubtransportFactory)
-}
-
-func registerManagedSSH() error {
-	globalRegisteredSmartTransports.Lock()
-	defer globalRegisteredSmartTransports.Unlock()
-
-	for _, protocol := range []string{"ssh", "ssh+git", "git+ssh"} {
-		if _, ok := globalRegisteredSmartTransports.transports[protocol]; ok {
-			continue
-		}
-		managed, err := newRegisteredSmartTransport(protocol, false, sshSmartSubtransportFactory, true)
-		if err != nil {
-			return fmt.Errorf("failed to register transport for %q: %v", protocol, err)
-		}
-		globalRegisteredSmartTransports.transports[protocol] = managed
-	}
-	return nil
-}
-
-func sshSmartSubtransportFactory(remote *Remote, transport *Transport) (SmartSubtransport, error) {
-	return &sshSmartSubtransport{
-		transport: transport,
-	}, nil
-}
-
-type sshSmartSubtransport struct {
-	transport *Transport
-
-	lastAction    SmartServiceAction
-	client        *ssh.Client
-	session       *ssh.Session
-	stdin         io.WriteCloser
-	stdout        io.Reader
-	currentStream *sshSmartSubtransportStream
-}
-
-func (t *sshSmartSubtransport) Action(urlString string, action SmartServiceAction) (SmartSubtransportStream, error) {
-	runtime.LockOSThread()
-	defer runtime.UnlockOSThread()
-
-	u, err := url.Parse(urlString)
-	if err != nil {
-		return nil, err
-	}
-
-	// Escape \ and '.
-	uPath := strings.Replace(u.Path, `\`, `\\`, -1)
-	uPath = strings.Replace(uPath, `'`, `\'`, -1)
-
-	// TODO: Add percentage decode similar to libgit2.
-	// Refer: https://github.com/libgit2/libgit2/blob/358a60e1b46000ea99ef10b4dd709e92f75ff74b/src/str.c#L455-L481
-
-	var cmd string
-	switch action {
-	case SmartServiceActionUploadpackLs, SmartServiceActionUploadpack:
-		if t.currentStream != nil {
-			if t.lastAction == SmartServiceActionUploadpackLs {
-				return t.currentStream, nil
-			}
-			t.Close()
-		}
-		cmd = fmt.Sprintf("git-upload-pack '%s'", uPath)
-
-	case SmartServiceActionReceivepackLs, SmartServiceActionReceivepack:
-		if t.currentStream != nil {
-			if t.lastAction == SmartServiceActionReceivepackLs {
-				return t.currentStream, nil
-			}
-			t.Close()
-		}
-		cmd = fmt.Sprintf("git-receive-pack '%s'", uPath)
-
-	default:
-		return nil, fmt.Errorf("unexpected action: %v", action)
-	}
-
-	cred, err := t.transport.SmartCredentials("", CredentialTypeSSHKey|CredentialTypeSSHMemory)
-	if err != nil {
-		return nil, err
-	}
-	defer cred.Free()
-
-	sshConfig, err := getSSHConfigFromCredential(cred)
-	if err != nil {
-		return nil, err
-	}
-	sshConfig.HostKeyCallback = func(hostname string, remote net.Addr, key ssh.PublicKey) error {
-		marshaledKey := key.Marshal()
-		cert := &Certificate{
-			Kind: CertificateHostkey,
-			Hostkey: HostkeyCertificate{
-				Kind:         HostkeySHA1 | HostkeyMD5 | HostkeySHA256 | HostkeyRaw,
-				HashMD5:      md5.Sum(marshaledKey),
-				HashSHA1:     sha1.Sum(marshaledKey),
-				HashSHA256:   sha256.Sum256(marshaledKey),
-				Hostkey:      marshaledKey,
-				SSHPublicKey: key,
-			},
-		}
-
-		return t.transport.SmartCertificateCheck(cert, true, hostname)
-	}
-
-	var addr string
-	if u.Port() != "" {
-		addr = fmt.Sprintf("%s:%s", u.Hostname(), u.Port())
-	} else {
-		addr = fmt.Sprintf("%s:22", u.Hostname())
-	}
-
-	t.client, err = ssh.Dial("tcp", addr, sshConfig)
-	if err != nil {
-		return nil, err
-	}
-
-	t.session, err = t.client.NewSession()
-	if err != nil {
-		return nil, err
-	}
-
-	t.stdin, err = t.session.StdinPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	t.stdout, err = t.session.StdoutPipe()
-	if err != nil {
-		return nil, err
-	}
-
-	if err := t.session.Start(cmd); err != nil {
-		return nil, err
-	}
-
-	t.lastAction = action
-	t.currentStream = &sshSmartSubtransportStream{
-		owner: t,
-	}
-
-	return t.currentStream, nil
-}
-
-func (t *sshSmartSubtransport) Close() error {
-	t.currentStream = nil
-	if t.client != nil {
-		t.stdin.Close()
-		t.session.Wait()
-		t.session.Close()
-		t.client = nil
-	}
-	return nil
-}
-
-func (t *sshSmartSubtransport) Free() {
-}
-
-type sshSmartSubtransportStream struct {
-	owner *sshSmartSubtransport
-}
-
-func (stream *sshSmartSubtransportStream) Read(buf []byte) (int, error) {
-	return stream.owner.stdout.Read(buf)
-}
-
-func (stream *sshSmartSubtransportStream) Write(buf []byte) (int, error) {
-	return stream.owner.stdin.Write(buf)
-}
-
-func (stream *sshSmartSubtransportStream) Free() {
-}
-
-func getSSHConfigFromCredential(cred *Credential) (*ssh.ClientConfig, error) {
-	switch cred.Type() {
-	case CredentialTypeSSHCustom:
-		credSSHCustom := (*C.git_credential_ssh_custom)(unsafe.Pointer(cred.ptr))
-		data, ok := pointerHandles.Get(credSSHCustom.payload).(*credentialSSHCustomData)
-		if !ok {
-			return nil, errors.New("unsupported custom SSH credentials")
-		}
-		return &ssh.ClientConfig{
-			User: C.GoString(credSSHCustom.username),
-			Auth: []ssh.AuthMethod{ssh.PublicKeys(data.signer)},
-		}, nil
-	}
-
-	username, _, privatekey, passphrase, err := cred.GetSSHKey()
-	if err != nil {
-		return nil, err
-	}
-
-	var pemBytes []byte
-	if cred.Type() == CredentialTypeSSHMemory {
-		pemBytes = []byte(privatekey)
-	} else {
-		pemBytes, err = ioutil.ReadFile(privatekey)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	var key ssh.Signer
-	if passphrase != "" {
-		key, err = ssh.ParsePrivateKeyWithPassphrase(pemBytes, []byte(passphrase))
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		key, err = ssh.ParsePrivateKey(pemBytes)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return &ssh.ClientConfig{
-		User: username,
-		Auth: []ssh.AuthMethod{ssh.PublicKeys(key)},
-	}, nil
-}

stash.go

@@ -3,7 +3,7 @@ package git
 /*
 #include <git2.h>
 
-extern void _go_git_populate_stash_apply_callbacks(git_stash_apply_options *opts);
+extern void _go_git_setup_stash_apply_progress_callbacks(git_stash_apply_options *opts);
 extern int _go_git_stash_foreach(git_repository *repo, void *payload);
 */
 import "C"
@@ -35,7 +35,6 @@ const (
 // StashCollection represents the possible operations that can be
 // performed on the collection of stashes for a repository.
 type StashCollection struct {
-	doNotCompare
 	repo *Repository
 }
 
@@ -64,7 +63,7 @@ func (c *StashCollection) Save(
 	ret := C.git_stash_save(
 		oid.toC(), c.repo.ptr,
 		stasherC, messageC, C.uint32_t(flags))
-	runtime.KeepAlive(c)
+
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -114,34 +113,34 @@ const (
 
 // StashApplyProgressCallback is the apply operation notification callback.
 type StashApplyProgressCallback func(progress StashApplyProgress) error
-type stashApplyProgressCallbackData struct {
-	callback    StashApplyProgressCallback
-	errorTarget *error
+
+type stashApplyProgressData struct {
+	Callback StashApplyProgressCallback
+	Error    error
 }
 
-//export stashApplyProgressCallback
-func stashApplyProgressCallback(progress C.git_stash_apply_progress_t, handle unsafe.Pointer) C.int {
+//export stashApplyProgressCb
+func stashApplyProgressCb(progress C.git_stash_apply_progress_t, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*stashApplyProgressCallbackData)
+	data, ok := payload.(*stashApplyProgressData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
-	if data == nil || data.callback == nil {
-		return C.int(ErrorCodeOK)
-	}
 
-	err := data.callback(StashApplyProgress(progress))
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+	if data != nil {
+		err := data.Callback(StashApplyProgress(progress))
+		if err != nil {
+			data.Error = err
+			return C.GIT_EUSER
+		}
 	}
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 // StashApplyOptions represents options to control the apply operation.
 type StashApplyOptions struct {
 	Flags            StashApplyFlag
-	CheckoutOptions  CheckoutOptions            // options to use when writing files to the working directory
+	CheckoutOptions  CheckoutOpts               // options to use when writing files to the working directory
 	ProgressCallback StashApplyProgressCallback // optional callback to notify the consumer of application progress
 }
 
@@ -152,7 +151,7 @@ func DefaultStashApplyOptions() (StashApplyOptions, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_stash_apply_options_init(&optsC, C.GIT_STASH_APPLY_OPTIONS_VERSION)
+	ecode := C.git_stash_apply_init_options(&optsC, C.GIT_STASH_APPLY_OPTIONS_VERSION)
 	if ecode < 0 {
 		return StashApplyOptions{}, MakeGitError(ecode)
 	}
@@ -162,45 +161,51 @@ func DefaultStashApplyOptions() (StashApplyOptions, error) {
 	}, nil
 }
 
-func populateStashApplyOptions(copts *C.git_stash_apply_options, opts *StashApplyOptions, errorTarget *error) *C.git_stash_apply_options {
-	C.git_stash_apply_options_init(copts, C.GIT_STASH_APPLY_OPTIONS_VERSION)
-	if opts == nil {
-		return nil
-	}
-	copts.flags = C.uint32_t(opts.Flags)
-	populateCheckoutOptions(&copts.checkout_options, &opts.CheckoutOptions, errorTarget)
-	if opts.ProgressCallback != nil {
-		progressData := &stashApplyProgressCallbackData{
-			callback:    opts.ProgressCallback,
-			errorTarget: errorTarget,
+func (opts *StashApplyOptions) toC() (
+	optsC *C.git_stash_apply_options, progressData *stashApplyProgressData) {
+
+	if opts != nil {
+		progressData = &stashApplyProgressData{
+			Callback: opts.ProgressCallback,
+		}
+
+		optsC = &C.git_stash_apply_options{
+			version: C.GIT_STASH_APPLY_OPTIONS_VERSION,
+			flags:   C.git_stash_apply_flags(opts.Flags),
+		}
+		populateCheckoutOpts(&optsC.checkout_options, &opts.CheckoutOptions)
+		if opts.ProgressCallback != nil {
+			C._go_git_setup_stash_apply_progress_callbacks(optsC)
+			optsC.progress_payload = pointerHandles.Track(progressData)
 		}
-		C._go_git_populate_stash_apply_callbacks(copts)
-		copts.progress_payload = pointerHandles.Track(progressData)
 	}
-	return copts
+	return
 }
 
-func freeStashApplyOptions(copts *C.git_stash_apply_options) {
-	if copts == nil {
-		return
+// should be called after every call to toC() as deferred.
+func untrackStashApplyOptionsCallback(optsC *C.git_stash_apply_options) {
+	if optsC != nil && optsC.progress_payload != nil {
+		pointerHandles.Untrack(optsC.progress_payload)
 	}
-	if copts.progress_payload != nil {
-		pointerHandles.Untrack(copts.progress_payload)
+}
+
+func freeStashApplyOptions(optsC *C.git_stash_apply_options) {
+	if optsC != nil {
+		freeCheckoutOpts(&optsC.checkout_options)
 	}
-	freeCheckoutOptions(&copts.checkout_options)
 }
 
 // Apply applies a single stashed state from the stash list.
 //
 // If local changes in the working directory conflict with changes in the
-// stash then ErrorCodeConflict will be returned.  In this case, the index
+// stash then ErrConflict will be returned.  In this case, the index
 // will always remain unmodified and all files in the working directory will
 // remain unmodified.  However, if you are restoring untracked files or
 // ignored files and there is a conflict when applying the modified files,
 // then those files will remain in the working directory.
 //
 // If passing the StashApplyReinstateIndex flag and there would be conflicts
-// when reinstating the index, the function will return ErrorCodeConflict
+// when reinstating the index, the function will return ErrConflict
 // and both the working directory and index will be left unmodified.
 //
 // Note that a minimum checkout strategy of 'CheckoutSafe' is implied.
@@ -208,24 +213,23 @@ func freeStashApplyOptions(copts *C.git_stash_apply_options) {
 // 'index' is the position within the stash list. 0 points to the most
 // recent stashed state.
 //
-// Returns error code ErrorCodeNotFound if there's no stashed state for the given
-// index, error code ErrorCodeConflict if local changes in the working directory
+// Returns error code ErrNotFound if there's no stashed state for the given
+// index, error code ErrConflict if local changes in the working directory
 // conflict with changes in the stash, the user returned error from the
 // StashApplyProgressCallback, if any, or other error code.
 //
-// Error codes can be interogated with IsErrorCode(err, ErrorCodeNotFound).
+// Error codes can be interogated with IsErrorCode(err, ErrNotFound).
 func (c *StashCollection) Apply(index int, opts StashApplyOptions) error {
-	var err error
-	optsC := populateStashApplyOptions(&C.git_stash_apply_options{}, &opts, &err)
+	optsC, progressData := opts.toC()
+	defer untrackStashApplyOptionsCallback(optsC)
 	defer freeStashApplyOptions(optsC)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_stash_apply(c.repo.ptr, C.size_t(index), optsC)
-	runtime.KeepAlive(c)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	if ret == C.GIT_EUSER {
+		return progressData.Error
 	}
 	if ret < 0 {
 		return MakeGitError(ret)
@@ -240,25 +244,26 @@ func (c *StashCollection) Apply(index int, opts StashApplyOptions) error {
 // 'message' is the message used when creating the stash and 'id'
 // is the commit id of the stash.
 type StashCallback func(index int, message string, id *Oid) error
+
 type stashCallbackData struct {
-	callback    StashCallback
-	errorTarget *error
+	Callback StashCallback
+	Error    error
 }
 
-//export stashForeachCallback
-func stashForeachCallback(index C.size_t, message *C.char, id *C.git_oid, handle unsafe.Pointer) C.int {
+//export stashForeachCb
+func stashForeachCb(index C.size_t, message *C.char, id *C.git_oid, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
 	data, ok := payload.(*stashCallbackData)
 	if !ok {
 		panic("could not retrieve data for handle")
 	}
 
-	err := data.callback(int(index), C.GoString(message), newOidFromC(id))
+	err := data.Callback(int(index), C.GoString(message), newOidFromC(id))
 	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+		data.Error = err
+		return C.GIT_EUSER
 	}
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 // Foreach loops over all the stashed states and calls the callback
@@ -266,11 +271,10 @@ func stashForeachCallback(index C.size_t, message *C.char, id *C.git_oid, handle
 //
 // If callback returns an error, this will stop looping.
 func (c *StashCollection) Foreach(callback StashCallback) error {
-	var err error
 	data := stashCallbackData{
-		callback:    callback,
-		errorTarget: &err,
+		Callback: callback,
 	}
+
 	handle := pointerHandles.Track(&data)
 	defer pointerHandles.Untrack(handle)
 
@@ -278,9 +282,8 @@ func (c *StashCollection) Foreach(callback StashCallback) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C._go_git_stash_foreach(c.repo.ptr, handle)
-	runtime.KeepAlive(c)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	if ret == C.GIT_EUSER {
+		return data.Error
 	}
 	if ret < 0 {
 		return MakeGitError(ret)
@@ -293,14 +296,13 @@ func (c *StashCollection) Foreach(callback StashCallback) error {
 // 'index' is the position within the stash list. 0 points
 // to the most recent stashed state.
 //
-// Returns error code ErrorCodeNotFound if there's no stashed
+// Returns error code ErrNotFound if there's no stashed
 // state for the given index.
 func (c *StashCollection) Drop(index int) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_stash_drop(c.repo.ptr, C.size_t(index))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -315,20 +317,19 @@ func (c *StashCollection) Drop(index int) error {
 //
 // 'opts' controls how stashes are applied.
 //
-// Returns error code ErrorCodeNotFound if there's no stashed
+// Returns error code ErrNotFound if there's no stashed
 // state for the given index.
 func (c *StashCollection) Pop(index int, opts StashApplyOptions) error {
-	var err error
-	optsC := populateStashApplyOptions(&C.git_stash_apply_options{}, &opts, &err)
+	optsC, progressData := opts.toC()
+	defer untrackStashApplyOptionsCallback(optsC)
 	defer freeStashApplyOptions(optsC)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_stash_pop(c.repo.ptr, C.size_t(index), optsC)
-	runtime.KeepAlive(c)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	if ret == C.GIT_EUSER {
+		return progressData.Error
 	}
 	if ret < 0 {
 		return MakeGitError(ret)

stash_test.go

@@ -56,8 +56,8 @@ func TestStash(t *testing.T) {
 	// Apply: no stash for the given index
 
 	err = repo.Stashes.Apply(1, opts)
-	if !IsErrorCode(err, ErrorCodeNotFound) {
-		t.Errorf("expecting GIT_ENOTFOUND error code %d, got %v", ErrorCodeNotFound, err)
+	if !IsErrorCode(err, ErrNotFound) {
+		t.Errorf("expecting GIT_ENOTFOUND error code %d, got %v", ErrNotFound, err)
 	}
 
 	// Apply: callback stopped

status.go

@@ -6,7 +6,6 @@ package git
 import "C"
 
 import (
-	"errors"
 	"runtime"
 	"unsafe"
 )
@@ -55,19 +54,16 @@ func statusEntryFromC(statusEntry *C.git_status_entry) StatusEntry {
 }
 
 type StatusList struct {
-	doNotCompare
 	ptr *C.git_status_list
-	r   *Repository
 }
 
-func newStatusListFromC(ptr *C.git_status_list, r *Repository) *StatusList {
+func newStatusListFromC(ptr *C.git_status_list) *StatusList {
 	if ptr == nil {
 		return nil
 	}
 
 	statusList := &StatusList{
 		ptr: ptr,
-		r:   r,
 	}
 
 	runtime.SetFinalizer(statusList, (*StatusList).Free)
@@ -88,23 +84,14 @@ func (statusList *StatusList) ByIndex(index int) (StatusEntry, error) {
 		return StatusEntry{}, ErrInvalid
 	}
 	ptr := C.git_status_byindex(statusList.ptr, C.size_t(index))
-	if ptr == nil {
-		return StatusEntry{}, errors.New("index out of Bounds")
-	}
-	entry := statusEntryFromC(ptr)
-	runtime.KeepAlive(statusList)
-
-	return entry, nil
+	return statusEntryFromC(ptr), nil
 }
 
 func (statusList *StatusList) EntryCount() (int, error) {
 	if statusList.ptr == nil {
 		return -1, ErrInvalid
 	}
-	ret := int(C.git_status_list_entrycount(statusList.ptr))
-	runtime.KeepAlive(statusList)
-
-	return ret, nil
+	return int(C.git_status_list_entrycount(statusList.ptr)), nil
 }
 
 type StatusOpt int
@@ -160,7 +147,7 @@ func (v *Repository) StatusList(opts *StatusOptions) (*StatusList, error) {
 		}
 	} else {
 		copts = &C.git_status_options{}
-		ret := C.git_status_options_init(copts, C.GIT_STATUS_OPTIONS_VERSION)
+		ret := C.git_status_init_options(copts, C.GIT_STATUS_OPTIONS_VERSION)
 		if ret < 0 {
 			return nil, MakeGitError(ret)
 		}
@@ -174,7 +161,7 @@ func (v *Repository) StatusList(opts *StatusOptions) (*StatusList, error) {
 		return nil, MakeGitError(ret)
 	}
 
-	return newStatusListFromC(ptr, v), nil
+	return newStatusListFromC(ptr), nil
 }
 
 func (v *Repository) StatusFile(path string) (Status, error) {
@@ -186,7 +173,6 @@ func (v *Repository) StatusFile(path string) (Status, error) {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_status_file(&statusFlags, v.ptr, cPath)
-	runtime.KeepAlive(v)
 	if ret < 0 {
 		return 0, MakeGitError(ret)
 	}

status_test.go

@@ -61,31 +61,3 @@ func TestStatusList(t *testing.T) {
 		t.Fatal("Incorrect entry path: ", entry.IndexToWorkdir.NewFile.Path)
 	}
 }
-
-func TestStatusNothing(t *testing.T) {
-	t.Parallel()
-	repo := createTestRepo(t)
-	defer cleanupTestRepo(t, repo)
-
-	seedTestRepo(t, repo)
-
-	opts := &StatusOptions{
-		Show:  StatusShowIndexAndWorkdir,
-		Flags: StatusOptIncludeUntracked | StatusOptRenamesHeadToIndex | StatusOptSortCaseSensitively,
-	}
-
-	statusList, err := repo.StatusList(opts)
-	checkFatal(t, err)
-
-	entryCount, err := statusList.EntryCount()
-	checkFatal(t, err)
-
-	if entryCount != 0 {
-		t.Fatal("expected no statuses in empty repo")
-	}
-
-	_, err = statusList.ByIndex(0)
-	if err == nil {
-		t.Error("expected error getting status by index")
-	}
-}

stream.go

@@ -0,0 +1,251 @@
+package git
+
+/*
+#include <git2.h>
+#include <git2/sys/stream.h>
+
+typedef struct {
+	git_stream parent;
+	void *ptr;
+} managed_stream;
+
+extern int _go_git_register_tls(void);
+extern void _go_git_setup_stream(managed_stream* s, int encrypted, int proxy_support, void *ptr);
+
+*/
+import "C"
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"io"
+	"reflect"
+	"runtime"
+	"unsafe"
+)
+
+// Network stream for libgit2 to use
+type Stream interface {
+	Encrypted() bool
+	ProxySupport() bool
+	Connect() error
+	Certificate() (Certificate, error)
+	SetProxy(ProxyOptions) error
+	io.ReadWriteCloser
+}
+
+type ManagedStream struct {
+	host string
+	port string
+	conn *tls.Conn
+}
+
+func (self *ManagedStream) Encrypted() bool {
+	return true
+}
+
+func (self *ManagedStream) ProxySupport() bool {
+	return false
+}
+
+func (self *ManagedStream) Connect() error {
+	conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%s", self.host, self.port), nil)
+	if err != nil {
+		return err
+	}
+
+	self.conn = conn
+	return nil
+}
+
+func (self *ManagedStream) Certificate() (Certificate, error) {
+	connState := self.conn.ConnectionState()
+	cert := Certificate{
+		Kind: CertificateX509,
+		X509: connState.PeerCertificates[0],
+	}
+
+	return cert, nil
+}
+
+func (self *ManagedStream) SetProxy(opts ProxyOptions) error {
+	return errors.New("proxy not supported")
+}
+
+func (self *ManagedStream) Read(p []byte) (int, error) {
+	return self.conn.Read(p)
+}
+
+func (self *ManagedStream) Write(p []byte) (int, error) {
+	return self.conn.Write(p)
+}
+
+func (self *ManagedStream) Close() error {
+	return self.conn.Close()
+}
+
+var errNotStream = errors.New("passed object does not implement Stream")
+
+// getStreamInterface extracts the Stream interface from the pointers we passed
+// to the C code.
+func getStreamInterface(_s *C.git_stream) (Stream, error) {
+	// For type compatibility we accept C.git_stream but we know we pass
+	// C.managed_stream so force the casting to that.
+	wrapperPtr := (*C.managed_stream)(unsafe.Pointer(_s))
+
+	// Inside we've stored a handle to the actual type, which must implement
+	// Stream.
+	stream, ok := pointerHandles.Get(wrapperPtr.ptr).(Stream)
+	if !ok {
+		return nil, errNotStream
+	}
+
+	return stream, nil
+}
+
+//export streamCertificate
+func streamCertificate(out **C.git_cert, _s *C.git_stream) C.int {
+	stream, err := getStreamInterface(_s)
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	cert, err := stream.Certificate()
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	ccert, err := cert.toC()
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	*out = ccert
+	return 0
+}
+
+//export streamSetProxy
+func streamSetProxy(s *C.git_stream, proxy_opts *C.git_proxy_options) C.int {
+	setLibgit2Error(errors.New("proxy not supported"))
+	return -1
+}
+
+//export streamConnect
+func streamConnect(_s *C.git_stream) C.int {
+	stream, err := getStreamInterface(_s)
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	err = stream.Connect()
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	return 0
+}
+
+//export streamRead
+func streamRead(_s *C.git_stream, data unsafe.Pointer, l C.size_t) C.ssize_t {
+	stream, err := getStreamInterface(_s)
+	if err != nil {
+		setLibgit2Error(err)
+		return -1
+	}
+
+	var p []byte
+	header := (*reflect.SliceHeader)(unsafe.Pointer(&p))
+	header.Cap = int(l)
+	header.Len = int(l)
+	header.Data = uintptr(data)
+
+	n, err := stream.Read(p)
+	if err != nil {
+		setLibgit2Error(err)
+		return -1
+	}
+
+	return C.ssize_t(n)
+}
+
+//export streamWrite
+func streamWrite(_s *C.git_stream, data unsafe.Pointer, l C.size_t, _f C.int) C.ssize_t {
+	stream, err := getStreamInterface(_s)
+	if err != nil {
+		setLibgit2Error(err)
+		return -1
+	}
+
+	var p []byte
+	header := (*reflect.SliceHeader)(unsafe.Pointer(&p))
+	header.Cap = int(l)
+	header.Len = int(l)
+	header.Data = uintptr(data)
+
+	n, err := stream.Write(p)
+	if err != nil {
+		setLibgit2Error(err)
+		return -1
+	}
+
+	return C.ssize_t(n)
+}
+
+//export streamClose
+func streamClose(_s *C.git_stream) C.int {
+	stream, err := getStreamInterface(_s)
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	err = stream.Close()
+	if err != nil {
+		return setLibgit2Error(err)
+	}
+
+	return 0
+}
+
+//export streamFree
+func streamFree(_s *C.git_stream) {
+	wrapperPtr := (*C.managed_stream)(unsafe.Pointer(_s))
+	pointerHandles.Untrack(wrapperPtr.ptr)
+}
+
+func newManagedStream(host, port string) *ManagedStream {
+	return &ManagedStream{
+		host: host,
+		port: port,
+	}
+}
+
+//export streamCallbackCb
+func streamCallbackCb(out **C.git_stream, chost, cport *C.char) C.int {
+	stream := C.calloc(1, C.size_t(unsafe.Sizeof(C.managed_stream{})))
+	managed := newManagedStream(C.GoString(chost), C.GoString(cport))
+	managedPtr := pointerHandles.Track(managed)
+	C._go_git_setup_stream(stream, 1, 0, managedPtr)
+
+	*out = (*C.git_stream)(stream)
+	return 0
+}
+
+func setLibgit2Error(err error) C.int {
+	cstr := C.CString(err.Error())
+	defer C.free(unsafe.Pointer(cstr))
+	C.giterr_set_str(C.GITERR_NET, cstr)
+
+	return -1
+}
+
+func RegisterManagedTls() error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	if err := C._go_git_register_tls(); err != 0 {
+		return MakeGitError(err)
+	}
+
+	return nil
+}

submodule.go

@@ -6,7 +6,6 @@ package git
 extern int _go_git_visit_submodule(git_repository *repo, void *fct);
 */
 import "C"
-
 import (
 	"runtime"
 	"unsafe"
@@ -14,26 +13,14 @@ import (
 
 // SubmoduleUpdateOptions
 type SubmoduleUpdateOptions struct {
-	CheckoutOptions CheckoutOptions
-	FetchOptions    FetchOptions
+	*CheckoutOpts
+	*FetchOptions
+	CloneCheckoutStrategy CheckoutStrategy
 }
 
 // Submodule
 type Submodule struct {
-	doNotCompare
 	ptr *C.git_submodule
-	r   *Repository
-}
-
-func newSubmoduleFromC(ptr *C.git_submodule, r *Repository) *Submodule {
-	s := &Submodule{ptr: ptr, r: r}
-	runtime.SetFinalizer(s, (*Submodule).Free)
-	return s
-}
-
-func (sub *Submodule) Free() {
-	runtime.SetFinalizer(sub, nil)
-	C.git_submodule_free(sub.ptr)
 }
 
 type SubmoduleUpdate int
@@ -82,7 +69,6 @@ const (
 )
 
 type SubmoduleCollection struct {
-	doNotCompare
 	repo *Repository
 }
 
@@ -96,65 +82,43 @@ func (c *SubmoduleCollection) Lookup(name string) (*Submodule, error) {
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
 
-	var ptr *C.git_submodule
+	sub := new(Submodule)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_submodule_lookup(&ptr, c.repo.ptr, cname)
+	ret := C.git_submodule_lookup(&sub.ptr, c.repo.ptr, cname)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
 
-	return newSubmoduleFromC(ptr, c.repo), nil
+	return sub, nil
 }
 
-// SubmoduleCallback is a function that is called for every submodule found in SubmoduleCollection.Foreach.
-type SubmoduleCallback func(sub *Submodule, name string) error
-type submoduleCallbackData struct {
-	callback    SubmoduleCallback
-	errorTarget *error
-}
+type SubmoduleCbk func(sub *Submodule, name string) int
 
-//export submoduleCallback
-func submoduleCallback(csub unsafe.Pointer, name *C.char, handle unsafe.Pointer) C.int {
-	sub := &Submodule{ptr: (*C.git_submodule)(csub)}
+//export SubmoduleVisitor
+func SubmoduleVisitor(csub unsafe.Pointer, name *C.char, handle unsafe.Pointer) C.int {
+	sub := &Submodule{(*C.git_submodule)(csub)}
 
-	data, ok := pointerHandles.Get(handle).(submoduleCallbackData)
-	if !ok {
+	if callback, ok := pointerHandles.Get(handle).(SubmoduleCbk); ok {
+		return (C.int)(callback(sub, C.GoString(name)))
+	} else {
 		panic("invalid submodule visitor callback")
 	}
-
-	err := data.callback(sub, C.GoString(name))
-	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
-	}
-
-	return C.int(ErrorCodeOK)
 }
 
-func (c *SubmoduleCollection) Foreach(callback SubmoduleCallback) error {
-	var err error
-	data := submoduleCallbackData{
-		callback:    callback,
-		errorTarget: &err,
-	}
+func (c *SubmoduleCollection) Foreach(cbk SubmoduleCbk) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	handle := pointerHandles.Track(data)
+	handle := pointerHandles.Track(cbk)
 	defer pointerHandles.Untrack(handle)
 
 	ret := C._go_git_visit_submodule(c.repo.ptr, handle)
-	runtime.KeepAlive(c)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
-
 	return nil
 }
 
@@ -164,15 +128,16 @@ func (c *SubmoduleCollection) Add(url, path string, use_git_link bool) (*Submodu
 	cpath := C.CString(path)
 	defer C.free(unsafe.Pointer(cpath))
 
+	sub := new(Submodule)
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	var ptr *C.git_submodule
-	ret := C.git_submodule_add_setup(&ptr, c.repo.ptr, curl, cpath, cbool(use_git_link))
+	ret := C.git_submodule_add_setup(&sub.ptr, c.repo.ptr, curl, cpath, cbool(use_git_link))
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
-	return newSubmoduleFromC(ptr, c.repo), nil
+	return sub, nil
 }
 
 func (sub *Submodule) FinalizeAdd() error {
@@ -180,7 +145,6 @@ func (sub *Submodule) FinalizeAdd() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_add_finalize(sub.ptr)
-	runtime.KeepAlive(sub)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -192,7 +156,6 @@ func (sub *Submodule) AddToIndex(write_index bool) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_add_to_index(sub.ptr, cbool(write_index))
-	runtime.KeepAlive(sub)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -200,21 +163,18 @@ func (sub *Submodule) AddToIndex(write_index bool) error {
 }
 
 func (sub *Submodule) Name() string {
-	n := C.GoString(C.git_submodule_name(sub.ptr))
-	runtime.KeepAlive(sub)
-	return n
+	n := C.git_submodule_name(sub.ptr)
+	return C.GoString(n)
 }
 
 func (sub *Submodule) Path() string {
-	n := C.GoString(C.git_submodule_path(sub.ptr))
-	runtime.KeepAlive(sub)
-	return n
+	n := C.git_submodule_path(sub.ptr)
+	return C.GoString(n)
 }
 
 func (sub *Submodule) Url() string {
-	n := C.GoString(C.git_submodule_url(sub.ptr))
-	runtime.KeepAlive(sub)
-	return n
+	n := C.git_submodule_url(sub.ptr)
+	return C.GoString(n)
 }
 
 func (c *SubmoduleCollection) SetUrl(submodule, url string) error {
@@ -227,7 +187,6 @@ func (c *SubmoduleCollection) SetUrl(submodule, url string) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_set_url(c.repo.ptr, csubmodule, curl)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -235,38 +194,31 @@ func (c *SubmoduleCollection) SetUrl(submodule, url string) error {
 }
 
 func (sub *Submodule) IndexId() *Oid {
-	var id *Oid
 	idx := C.git_submodule_index_id(sub.ptr)
-	if idx != nil {
-		id = newOidFromC(idx)
+	if idx == nil {
+		return nil
 	}
-	runtime.KeepAlive(sub)
-	return id
+	return newOidFromC(idx)
 }
 
 func (sub *Submodule) HeadId() *Oid {
-	var id *Oid
 	idx := C.git_submodule_head_id(sub.ptr)
-	if idx != nil {
-		id = newOidFromC(idx)
+	if idx == nil {
+		return nil
 	}
-	runtime.KeepAlive(sub)
-	return id
+	return newOidFromC(idx)
 }
 
 func (sub *Submodule) WdId() *Oid {
-	var id *Oid
 	idx := C.git_submodule_wd_id(sub.ptr)
-	if idx != nil {
-		id = newOidFromC(idx)
+	if idx == nil {
+		return nil
 	}
-	runtime.KeepAlive(sub)
-	return id
+	return newOidFromC(idx)
 }
 
 func (sub *Submodule) Ignore() SubmoduleIgnore {
 	o := C.git_submodule_ignore(sub.ptr)
-	runtime.KeepAlive(sub)
 	return SubmoduleIgnore(o)
 }
 
@@ -278,7 +230,6 @@ func (c *SubmoduleCollection) SetIgnore(submodule string, ignore SubmoduleIgnore
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_set_ignore(c.repo.ptr, csubmodule, C.git_submodule_ignore_t(ignore))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -288,7 +239,6 @@ func (c *SubmoduleCollection) SetIgnore(submodule string, ignore SubmoduleIgnore
 
 func (sub *Submodule) UpdateStrategy() SubmoduleUpdate {
 	o := C.git_submodule_update_strategy(sub.ptr)
-	runtime.KeepAlive(sub)
 	return SubmoduleUpdate(o)
 }
 
@@ -300,7 +250,6 @@ func (c *SubmoduleCollection) SetUpdate(submodule string, update SubmoduleUpdate
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_set_update(c.repo.ptr, csubmodule, C.git_submodule_update_t(update))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -320,7 +269,6 @@ func (c *SubmoduleCollection) SetFetchRecurseSubmodules(submodule string, recurs
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_set_fetch_recurse_submodules(c.repo.ptr, csubmodule, C.git_submodule_recurse_t(recurse))
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(C.int(ret))
 	}
@@ -332,7 +280,6 @@ func (sub *Submodule) Init(overwrite bool) error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_init(sub.ptr, cbool(overwrite))
-	runtime.KeepAlive(sub)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -344,7 +291,6 @@ func (sub *Submodule) Sync() error {
 	defer runtime.UnlockOSThread()
 
 	ret := C.git_submodule_sync(sub.ptr)
-	runtime.KeepAlive(sub)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -357,7 +303,6 @@ func (sub *Submodule) Open() (*Repository, error) {
 
 	var ptr *C.git_repository
 	ret := C.git_submodule_open(&ptr, sub.ptr)
-	runtime.KeepAlive(sub)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -365,18 +310,16 @@ func (sub *Submodule) Open() (*Repository, error) {
 }
 
 func (sub *Submodule) Update(init bool, opts *SubmoduleUpdateOptions) error {
-	var err error
-	cOpts := populateSubmoduleUpdateOptions(&C.git_submodule_update_options{}, opts, &err)
-	defer freeSubmoduleUpdateOptions(cOpts)
+	var copts C.git_submodule_update_options
+	err := populateSubmoduleUpdateOptions(&copts, opts)
+	if err != nil {
+		return err
+	}
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_submodule_update(sub.ptr, cbool(init), cOpts)
-	runtime.KeepAlive(sub)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
-	}
+	ret := C.git_submodule_update(sub.ptr, cbool(init), &copts)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -384,22 +327,16 @@ func (sub *Submodule) Update(init bool, opts *SubmoduleUpdateOptions) error {
 	return nil
 }
 
-func populateSubmoduleUpdateOptions(copts *C.git_submodule_update_options, opts *SubmoduleUpdateOptions, errorTarget *error) *C.git_submodule_update_options {
-	C.git_submodule_update_options_init(copts, C.GIT_SUBMODULE_UPDATE_OPTIONS_VERSION)
+func populateSubmoduleUpdateOptions(ptr *C.git_submodule_update_options, opts *SubmoduleUpdateOptions) error {
+	C.git_submodule_update_init_options(ptr, C.GIT_SUBMODULE_UPDATE_OPTIONS_VERSION)
+
 	if opts == nil {
 		return nil
 	}
 
-	populateCheckoutOptions(&copts.checkout_opts, &opts.CheckoutOptions, errorTarget)
-	populateFetchOptions(&copts.fetch_opts, &opts.FetchOptions, errorTarget)
+	populateCheckoutOpts(&ptr.checkout_opts, opts.CheckoutOpts)
+	populateFetchOptions(&ptr.fetch_opts, opts.FetchOptions)
+	ptr.clone_checkout_strategy = C.uint(opts.CloneCheckoutStrategy)
 
-	return copts
-}
-
-func freeSubmoduleUpdateOptions(copts *C.git_submodule_update_options) {
-	if copts == nil {
-		return
-	}
-	freeCheckoutOptions(&copts.checkout_opts)
-	freeFetchOptions(&copts.fetch_opts)
+	return nil
 }

submodule_test.go

@@ -15,9 +15,9 @@ func TestSubmoduleForeach(t *testing.T) {
 	checkFatal(t, err)
 
 	i := 0
-	err = repo.Submodules.Foreach(func(sub *Submodule, name string) error {
+	err = repo.Submodules.Foreach(func(sub *Submodule, name string) int {
 		i++
-		return nil
+		return 0
 	})
 	checkFatal(t, err)
 

tag.go

@@ -13,38 +13,27 @@ import (
 
 // Tag
 type Tag struct {
-	doNotCompare
 	Object
 	cast_ptr *C.git_tag
 }
 
-func (t *Tag) AsObject() *Object {
-	return &t.Object
+func (t Tag) Message() string {
+	return C.GoString(C.git_tag_message(t.cast_ptr))
 }
 
-func (t *Tag) Message() string {
-	ret := C.GoString(C.git_tag_message(t.cast_ptr))
-	runtime.KeepAlive(t)
-	return ret
+func (t Tag) Name() string {
+	return C.GoString(C.git_tag_name(t.cast_ptr))
 }
 
-func (t *Tag) Name() string {
-	ret := C.GoString(C.git_tag_name(t.cast_ptr))
-	runtime.KeepAlive(t)
-	return ret
-}
-
-func (t *Tag) Tagger() *Signature {
+func (t Tag) Tagger() *Signature {
 	cast_ptr := C.git_tag_tagger(t.cast_ptr)
-	ret := newSignatureFromC(cast_ptr)
-	runtime.KeepAlive(t)
-	return ret
+	return newSignatureFromC(cast_ptr)
 }
 
-func (t *Tag) Target() *Object {
+func (t Tag) Target() *Object {
 	var ptr *C.git_object
 	ret := C.git_tag_target(&ptr, t.cast_ptr)
-	runtime.KeepAlive(t)
+
 	if ret != 0 {
 		return nil
 	}
@@ -52,24 +41,20 @@ func (t *Tag) Target() *Object {
 	return allocObject(ptr, t.repo)
 }
 
-func (t *Tag) TargetId() *Oid {
-	ret := newOidFromC(C.git_tag_target_id(t.cast_ptr))
-	runtime.KeepAlive(t)
-	return ret
+func (t Tag) TargetId() *Oid {
+	return newOidFromC(C.git_tag_target_id(t.cast_ptr))
 }
 
-func (t *Tag) TargetType() ObjectType {
-	ret := ObjectType(C.git_tag_target_type(t.cast_ptr))
-	runtime.KeepAlive(t)
-	return ret
+func (t Tag) TargetType() ObjectType {
+	return ObjectType(C.git_tag_target_type(t.cast_ptr))
 }
 
 type TagsCollection struct {
-	doNotCompare
 	repo *Repository
 }
 
-func (c *TagsCollection) Create(name string, obj Objecter, tagger *Signature, message string) (*Oid, error) {
+func (c *TagsCollection) Create(
+	name string, commit *Commit, tagger *Signature, message string) (*Oid, error) {
 
 	oid := new(Oid)
 
@@ -85,13 +70,12 @@ func (c *TagsCollection) Create(name string, obj Objecter, tagger *Signature, me
 	}
 	defer C.git_signature_free(taggerSig)
 
+	ctarget := commit.ptr
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	o := obj.AsObject()
-	ret := C.git_tag_create(oid.toC(), c.repo.ptr, cname, o.ptr, taggerSig, cmessage, 0)
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(obj)
+	ret := C.git_tag_create(oid.toC(), c.repo.ptr, cname, ctarget, taggerSig, cmessage, 0)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -107,7 +91,6 @@ func (c *TagsCollection) Remove(name string) error {
 	defer C.free(unsafe.Pointer(cname))
 
 	ret := C.git_tag_delete(c.repo.ptr, cname)
-	runtime.KeepAlive(c)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
@@ -115,7 +98,7 @@ func (c *TagsCollection) Remove(name string) error {
 	return nil
 }
 
-// CreateLightweight creates a new lightweight tag pointing to an object
+// CreateLightweight creates a new lightweight tag pointing to a commit
 // and returns the id of the target object.
 //
 // The name of the tag is validated for consistency (see git_tag_create() for the rules
@@ -127,20 +110,19 @@ func (c *TagsCollection) Remove(name string) error {
 // The created tag is a simple reference and can be queried using
 // repo.References.Lookup("refs/tags/<name>"). The name of the tag (eg "v1.0.0")
 // is queried with ref.Shorthand().
-func (c *TagsCollection) CreateLightweight(name string, obj Objecter, force bool) (*Oid, error) {
+func (c *TagsCollection) CreateLightweight(name string, commit *Commit, force bool) (*Oid, error) {
 
 	oid := new(Oid)
 
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
 
+	ctarget := commit.ptr
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	o := obj.AsObject()
-	err := C.git_tag_create_lightweight(oid.toC(), c.repo.ptr, cname, o.ptr, cbool(force))
-	runtime.KeepAlive(c)
-	runtime.KeepAlive(obj)
+	err := C.git_tag_create_lightweight(oid.toC(), c.repo.ptr, cname, ctarget, cbool(force))
 	if err < 0 {
 		return nil, MakeGitError(err)
 	}
@@ -157,11 +139,10 @@ func (c *TagsCollection) List() ([]string, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_tag_list(&strC, c.repo.ptr)
-	runtime.KeepAlive(c)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
-	defer C.git_strarray_dispose(&strC)
+	defer C.git_strarray_free(&strC)
 
 	tags := makeStringsFromCStrings(strC.strings, int(strC.count))
 	return tags, nil
@@ -181,11 +162,10 @@ func (c *TagsCollection) ListWithMatch(pattern string) ([]string, error) {
 	defer runtime.UnlockOSThread()
 
 	ecode := C.git_tag_list_match(&strC, patternC, c.repo.ptr)
-	runtime.KeepAlive(c)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}
-	defer C.git_strarray_dispose(&strC)
+	defer C.git_strarray_free(&strC)
 
 	tags := makeStringsFromCStrings(strC.strings, int(strC.count))
 	return tags, nil
@@ -199,48 +179,47 @@ func (c *TagsCollection) ListWithMatch(pattern string) ([]string, error) {
 // so repo.LookupTag() will return an error for these tags. Use
 // repo.References.Lookup() instead.
 type TagForeachCallback func(name string, id *Oid) error
-type tagForeachCallbackData struct {
-	callback    TagForeachCallback
-	errorTarget *error
+type tagForeachData struct {
+	callback TagForeachCallback
+	err      error
 }
 
-//export tagForeachCallback
-func tagForeachCallback(name *C.char, id *C.git_oid, handle unsafe.Pointer) C.int {
+//export gitTagForeachCb
+func gitTagForeachCb(name *C.char, id *C.git_oid, handle unsafe.Pointer) int {
 	payload := pointerHandles.Get(handle)
-	data, ok := payload.(*tagForeachCallbackData)
+	data, ok := payload.(*tagForeachData)
 	if !ok {
 		panic("could not retrieve tag foreach CB handle")
 	}
 
 	err := data.callback(C.GoString(name), newOidFromC(id))
 	if err != nil {
-		*data.errorTarget = err
-		return C.int(ErrorCodeUser)
+		data.err = err
+		return C.GIT_EUSER
 	}
 
-	return C.int(ErrorCodeOK)
+	return 0
 }
 
 // Foreach calls the callback for each tag in the repository.
 func (c *TagsCollection) Foreach(callback TagForeachCallback) error {
-	var err error
-	data := tagForeachCallbackData{
-		callback:    callback,
-		errorTarget: &err,
+	data := tagForeachData{
+		callback: callback,
+		err:      nil,
 	}
+
 	handle := pointerHandles.Track(&data)
 	defer pointerHandles.Untrack(handle)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C._go_git_tag_foreach(c.repo.ptr, handle)
-	runtime.KeepAlive(c)
-	if ret == C.int(ErrorCodeUser) && err != nil {
-		return err
+	err := C._go_git_tag_foreach(c.repo.ptr, handle)
+	if err == C.GIT_EUSER {
+		return data.err
 	}
-	if ret < 0 {
-		return MakeGitError(ret)
+	if err < 0 {
+		return MakeGitError(err)
 	}
 
 	return nil

testdata/TestGitRepository.git/HEAD

@@ -1 +0,0 @@
-ref: refs/heads/master

testdata/TestGitRepository.git/config

@@ -1,6 +0,0 @@
-[core]
-	repositoryformatversion = 0
-	filemode = true
-	bare = true
-[remote "origin"]
-	url = https://github.com/libgit2/TestGitRepository

testdata/TestGitRepository.git/description

@@ -1 +0,0 @@
-Unnamed repository; edit this file 'description' to name the repository.

testdata/TestGitRepository.git/info/exclude

@@ -1,6 +0,0 @@
-# git ls-files --others --exclude-from=.git/info/exclude
-# Lines that start with '#' are comments.
-# For a project mostly in C, the following would be a good set of
-# exclude patterns (uncomment them if you want to use them):
-# *.[oa]
-# *~

testdata/TestGitRepository.git/info/refs

@@ -1,8 +0,0 @@
-0966a434eb1a025db6b71485ab63a3bfbea520b6	refs/heads/first-merge
-49322bb17d3acc9146f98c97d078513228bbf3c0	refs/heads/master
-42e4e7c5e507e113ebbb7801b16b52cf867b7ce1	refs/heads/no-parent
-d96c4e80345534eccee5ac7b07fc7603b56124cb	refs/tags/annotated_tag
-c070ad8c08840c8116da865b2d65593a6bb9cd2a	refs/tags/annotated_tag^{}
-55a1a760df4b86a02094a904dfa511deb5655905	refs/tags/blob
-8f50ba15d49353813cc6e20298002c0d17b0a9ee	refs/tags/commit_tree
-6e0c7bdb9b4ed93212491ee778ca1c65047cab4e	refs/tags/nearly-dangling

testdata/TestGitRepository.git/objects/info/packs

@@ -1,2 +0,0 @@
-P pack-ccace4e169a0858c13d9ae781a91d76fc33769b8.pack
-