From b1d50b70ea8c4be9c19fe91768d6653736660c4c Mon Sep 17 00:00:00 2001 From: Vicent Marti Date: Tue, 5 Mar 2013 20:53:04 +0100 Subject: [PATCH] Initial commit --- LICENSE | 21 ++++++++ README.md | 16 ++++++ blob.go | 26 ++++++++++ commit.go | 52 +++++++++++++++++++ config.go | 69 ++++++++++++++++++++++++ git.go | 92 ++++++++++++++++++++++++++++++++ odb.go | 71 +++++++++++++++++++++++++ repository.go | 141 ++++++++++++++++++++++++++++++++++++++++++++++++++ tree.go | 127 +++++++++++++++++++++++++++++++++++++++++++++ wrapper.c | 9 ++++ 10 files changed, 624 insertions(+) create mode 100644 LICENSE create mode 100644 README.md create mode 100644 blob.go create mode 100644 commit.go create mode 100644 config.go create mode 100644 git.go create mode 100644 odb.go create mode 100644 repository.go create mode 100644 tree.go create mode 100644 wrapper.c diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..46a7407 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +The MIT License + +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 +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..94aedea --- /dev/null +++ b/README.md @@ -0,0 +1,16 @@ +git2go +====== + +Go bindings for [libgit2](http://libgit2.github.com/). Pre-release, things may or may not work. Operator get me Beijing-jing-jing-jing! + +License +------- + +M to the I to the T. + +Authors +------- + +- Carlos Martín (@cmn) +- Vicent Martí (@vmg) + diff --git a/blob.go b/blob.go new file mode 100644 index 0000000..91064b1 --- /dev/null +++ b/blob.go @@ -0,0 +1,26 @@ +package git + +/* +#cgo pkg-config: libgit2 +#include +#include +*/ +import "C" +import ( + "unsafe" +) + +type Blob struct { + ptr *C.git_object +} + +func freeBlob(blob *Blob) { + C.git_object_free(blob.ptr) +} + +func (v *Blob) Contents() []byte { + size := C.int(C.git_blob_rawsize(v.ptr)) + buffer := unsafe.Pointer(C.git_blob_rawcontent(v.ptr)) + return C.GoBytes(buffer, size) +} + diff --git a/commit.go b/commit.go new file mode 100644 index 0000000..bba02e8 --- /dev/null +++ b/commit.go @@ -0,0 +1,52 @@ +package git + +/* +#include +#include + +extern int _go_git_treewalk(git_tree *tree, git_treewalk_mode mode, void *ptr); +*/ +import "C" + +import ( +) + +// Commit +type Commit struct { + ptr *C.git_commit +} + +func (c *Commit) Id() *Oid { + return newOidFromC(C.git_commit_id(c.ptr)) +} + +func (c *Commit) Message() string { + return C.GoString(C.git_commit_message(c.ptr)) +} + +func (c *Commit) Tree() (*Tree, error) { + tree := new(Tree) + + err := C.git_commit_tree(&tree.ptr, c.ptr) + if err < 0 { + return nil, LastError() + } + return tree, nil +} + +func (c *Commit) TreeId() *Oid { + return newOidFromC(C.git_commit_tree_id(c.ptr)) +} + +/* TODO */ +/* +func (c *Commit) Author() *Signature { + ptr := C.git_commit_author(c.ptr) + return &Signature{ptr} +} + +func (c *Commit) Committer() *Signature { + ptr := C.git_commit_committer(c.ptr) + return &Signature{ptr} +} +*/ diff --git a/config.go b/config.go new file mode 100644 index 0000000..ec8b8d0 --- /dev/null +++ b/config.go @@ -0,0 +1,69 @@ +package git + +/* +#cgo pkg-config: libgit2 +#include +#include +*/ +import "C" +import ( + "unsafe" +) + +type Config struct { + ptr *C.git_config +} + +func (c *Config) LookupInt32(name string) (v int32, err error) { + var out C.int32_t + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + ret := C.git_config_get_int32(&out, c.ptr, cname) + if ret < 0 { + return 0, LastError() + } + + return int32(out), nil +} + +func (c *Config) LookupInt64(name string) (v int64, err error) { + var out C.int64_t + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + ret := C.git_config_get_int64(&out, c.ptr, cname) + if ret < 0 { + return 0, LastError() + } + + return int64(out), nil +} + +func (c *Config) LookupString(name string) (v string, err error) { + var ptr *C.char + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + ret := C.git_config_get_string(&ptr, c.ptr, cname) + if ret < 0 { + return "", LastError() + } + + return C.GoString(ptr), nil +} + +func (c *Config) Set(name, value string) (err error) { + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + cvalue := C.CString(value) + defer C.free(unsafe.Pointer(cvalue)) + + ret := C.git_config_set_string(c.ptr, cname, cvalue) + if ret < 0 { + return LastError() + } + + return nil +} diff --git a/git.go b/git.go new file mode 100644 index 0000000..84716e3 --- /dev/null +++ b/git.go @@ -0,0 +1,92 @@ +package git + +/* +#cgo pkg-config: libgit2 +#include +#include +*/ +import "C" +import ( + "unsafe" +) + +const ( + ITEROVER = C.GIT_ITEROVER + EEXISTS = C.GIT_EEXISTS + ENOTFOUND = C.GIT_ENOTFOUND +) + +func init() { + C.git_threads_init() +} + +// Oid +type Oid struct { + bytes [20]byte +} + +func newOidFromC(coid *C.git_oid) *Oid { + oid := new(Oid) + copy(oid.bytes[0:20], C.GoBytes(unsafe.Pointer(coid), 20)) + return oid +} + +func NewOid(b []byte) *Oid { + oid := new(Oid) + copy(oid.bytes[0:20], b[0:20]) + return oid +} + +func (oid *Oid) toC() *C.git_oid { + return (*C.git_oid)(unsafe.Pointer(&oid.bytes)) +} + +func NewOidFromString(s string) (*Oid, error) { + o := new(Oid) + cs := C.CString(s) + defer C.free(unsafe.Pointer(cs)) + + if C.git_oid_fromstr(o.toC(), cs) < 0 { + return nil, LastError() + } + + return o, nil +} + +func (oid *Oid) String() string { + buf := make([]byte, 40) + C.git_oid_fmt((*C.char)(unsafe.Pointer(&buf[0])), oid.toC()) + return string(buf) +} + +func (oid *Oid) Bytes() []byte { + return oid.bytes[0:] +} + +type GitError struct { + Message string + Code int +} + +func (e GitError) Error() string{ + return e.Message +} + +func LastError() error { + err := C.giterr_last() + return &GitError{C.GoString(err.message), int(err.klass)} +} + +func cbool(b bool) C.int { + if (b) { + return C.int(1) + } + return C.int(0) +} + +func ucbool(b bool) C.uint { + if (b) { + return C.uint(1) + } + return C.uint(0) +} diff --git a/odb.go b/odb.go new file mode 100644 index 0000000..5688080 --- /dev/null +++ b/odb.go @@ -0,0 +1,71 @@ +package git + +/* +#cgo pkg-config: libgit2 +#include +#include +*/ +import "C" +import ( + "unsafe" + "reflect" + "runtime" +) + +var ( + OBJ_ANY = C.GIT_OBJ_ANY + OBJ_BAD = C.GIT_OBJ_BAD + OBJ_COMMIT = C.GIT_OBJ_COMMIT + OBJ_TREE = C.GIT_OBJ_TREE + OBJ_BLOB = C.GIT_OBJ_BLOB + OBJ_TAG = C.GIT_OBJ_TAG +) + +type Odb struct { + ptr *C.git_odb +} + +func (v *Odb) Exists(oid *Oid) bool { + ret := C.git_odb_exists(v.ptr, oid.toC()) + return ret != 0 +} + +func (v *Odb) Write(data []byte, otype int) (oid *Oid, err error) { + oid = new(Oid) + hdr := (*reflect.SliceHeader)(unsafe.Pointer(&data)) + ret := C.git_odb_write(oid.toC(), v.ptr, unsafe.Pointer(hdr.Data), C.size_t(hdr.Len), C.git_otype(otype)) + + if ret < 0 { + err = LastError() + } + + return +} + +func (v *Odb) Read(oid *Oid) (obj *OdbObject, err error) { + obj = new(OdbObject) + ret := C.git_odb_read(&obj.ptr, v.ptr, oid.toC()) + if ret < 0 { + return nil, LastError() + } + + runtime.SetFinalizer(obj, freeOdbObject) + return +} + +type OdbObject struct { + ptr *C.git_odb_object +} + +func freeOdbObject(obj *OdbObject) { + C.git_odb_object_free(obj.ptr) +} + +func (v *OdbObject) Type() int { + return int(C.git_odb_object_type(v.ptr)) +} + +func (v *OdbObject) Size() int64 { + return int64(C.git_odb_object_size(v.ptr)) +} + diff --git a/repository.go b/repository.go new file mode 100644 index 0000000..3b845e7 --- /dev/null +++ b/repository.go @@ -0,0 +1,141 @@ +package git + +/* +#cgo pkg-config: libgit2 +#include +#include +*/ +import "C" +import ( + "unsafe" + "runtime" +) + +// Repository +type Repository struct { + ptr *C.git_repository +} + +func Open(path string) (*Repository, error) { + repo := new(Repository) + + cpath := C.CString(path) + defer C.free(unsafe.Pointer(cpath)) + + ret := C.git_repository_open(&repo.ptr, cpath) + if ret < 0 { + return nil, LastError() + } + + runtime.SetFinalizer(repo, freeRepository) + return repo, nil +} + +func Init(path string, isbare bool) (*Repository, error) { + repo := new(Repository) + + cpath := C.CString(path) + defer C.free(unsafe.Pointer(cpath)) + + ret := C.git_repository_init(&repo.ptr, cpath, ucbool(isbare)) + if ret < 0 { + return nil, LastError() + } + + runtime.SetFinalizer(repo, freeRepository) + return repo, nil +} + +func freeRepository(repo *Repository) { + C.git_repository_free(repo.ptr) +} + +func (v *Repository) Config() (*Config, error) { + config := new(Config) + + ret := C.git_repository_config(&config.ptr, v.ptr) + if ret < 0 { + return nil, LastError() + } + + return config, nil +} + +func (v *Repository) LookupTree(oid *Oid) (*Tree, error) { + tree := new(Tree) + ret := C.git_tree_lookup(&tree.ptr, v.ptr, oid.toC()) + if ret < 0 { + return nil, LastError() + } + + return tree, nil +} + +func (v *Repository) LookupCommit(o *Oid) (*Commit, error) { + commit := new(Commit) + ecode := C.git_commit_lookup(&commit.ptr, v.ptr, o.toC()) + if ecode < 0 { + return nil, LastError() + } + + return commit, nil +} + +/* TODO +func (v *Repository) Commit( + refname string, author, committer *Signature, + message string, tree *Tree, parents ...*Commit) (*Oid, error) { + + oid := new(Oid) + cref := C.CString(refname) + defer C.free(unsafe.Pointer(cref)) + cmsg := C.CString(message) + defer C.free(unsafe.Pointer(cmsg)) + nparents := len(parents) + var cparents []*C.git_commit = nil + var parentsarg **C.git_commit = nil + if nparents > 0 { + cparents = make([]*C.git_commit, nparents) + for i, v := range parents { + cparents[i] = v.ptr + } + parentsarg = &cparents[0] + } + + ret := C.git_commit_create( + oid.toC(), v.ptr, cref, + author.git_signature, committer.git_signature, + nil, cmsg, tree.ptr, C.int(nparents), parentsarg) + + if ret < GIT_SUCCESS { + return nil, LastError() + } + + return oid, nil +} +*/ + +func freeOdb(odb *Odb) { + C.git_odb_free(odb.ptr) +} + +func (v *Repository) Odb() (odb *Odb, err error) { + odb = new(Odb) + if ret := C.git_repository_odb(&odb.ptr, v.ptr); ret < 0 { + return nil, LastError() + } + + runtime.SetFinalizer(odb, freeOdb) + return +} + +func (v *Repository) TreeBuilder() (*TreeBuilder, error) { + bld := new(TreeBuilder) + if ret := C.git_treebuilder_create(&bld.ptr, nil); ret < 0 { + return nil, LastError() + } + + bld.repo = v + return bld, nil +} + diff --git a/tree.go b/tree.go new file mode 100644 index 0000000..324fc1f --- /dev/null +++ b/tree.go @@ -0,0 +1,127 @@ +package git + +/* +#include +#include + +extern int _go_git_treewalk(git_tree *tree, git_treewalk_mode mode, void *ptr); +*/ +import "C" + +import ( + "unsafe" +) + +type Tree struct { + ptr *C.git_tree +} + +type TreeEntry struct { + Name string + Oid *Oid + Type int +} + +func newTreeEntry(entry *C.git_tree_entry) *TreeEntry { + return &TreeEntry{ + C.GoString(C.git_tree_entry_name(entry)), + newOidFromC(C.git_tree_entry_id(entry)), + int(C.git_tree_entry_type(entry)), + } +} + +func (t *Tree) Free() { + C.git_tree_free(t.ptr) +} + +func TreeLookup(repo *Repository, oid *Oid) (*Tree, error) { + tree := new(Tree) + err := C.git_tree_lookup(&tree.ptr, repo.ptr, oid.toC()) + if err < 0 { + return nil, LastError() + } + return tree, nil +} + +func (t *Tree) EntryByName(filename string) *TreeEntry { + cname := C.CString(filename) + defer C.free(unsafe.Pointer(cname)) + + entry := C.git_tree_entry_byname(t.ptr, cname) + if entry == nil { + return nil + } + + return newTreeEntry(entry) +} + +func (t *Tree) EntryByIndex(index uint64) *TreeEntry { + entry := C.git_tree_entry_byindex(t.ptr, C.size_t(index)) + if entry == nil { + return nil + } + + return newTreeEntry(entry) +} + +func (t *Tree) EntryCount() uint64 { + num := C.git_tree_entrycount(t.ptr) + return uint64(num) +} + +type TreeWalkCallback func(string, *TreeEntry) int + +//export CallbackGitTreeWalk +func CallbackGitTreeWalk(_root unsafe.Pointer, _entry unsafe.Pointer, ptr unsafe.Pointer) C.int { + root := C.GoString((*C.char)(_root)) + entry := (*C.git_tree_entry)(_entry) + callback := *(*TreeWalkCallback)(ptr) + + return C.int(callback(root, newTreeEntry(entry))) +} + +func (t *Tree) Walk(callback TreeWalkCallback) error { + err := C._go_git_treewalk( + t.ptr, + C.GIT_TREEWALK_PRE, + unsafe.Pointer(&callback), + ) + + if err < 0 { + return LastError() + } + + return nil +} + +type TreeBuilder struct { + ptr *C.git_treebuilder + repo *Repository +} + +func freeTreeBuilder(v *TreeBuilder) { + C.git_treebuilder_free(v.ptr) +} + +func (v *TreeBuilder) Insert(filename string, id *Oid, filemode int) (error) { + cfilename := C.CString(filename) + defer C.free(unsafe.Pointer(cfilename)) + + err := C.git_treebuilder_insert(nil, v.ptr, cfilename, id.toC(), C.git_filemode_t(filemode)) + if err < 0 { + return LastError() + } + + return nil +} + +func (v *TreeBuilder) Write() (*Oid, error) { + oid := new(Oid) + err := C.git_treebuilder_write(oid.toC(), v.repo.ptr, v.ptr) + + if err < 0 { + return nil, LastError() + } + + return oid, nil +} diff --git a/wrapper.c b/wrapper.c new file mode 100644 index 0000000..4e1304e --- /dev/null +++ b/wrapper.c @@ -0,0 +1,9 @@ +#include "_cgo_export.h" +#include "git2.h" + +int _go_git_treewalk(git_tree *tree, git_treewalk_mode mode, void *ptr) +{ + return git_tree_walk(tree, mode, (git_treewalk_cb)&CallbackGitTreeWalk, ptr); +} + +/* EOF */