diff options
Diffstat (limited to 'tag.go')
| -rw-r--r-- | tag.go | 186 |
1 files changed, 184 insertions, 2 deletions
@@ -2,12 +2,18 @@ package git /* #include <git2.h> + +extern int _go_git_tag_foreach(git_repository *repo, void *payload); */ import "C" +import ( + "runtime" + "unsafe" +) // Tag type Tag struct { - gitObject + Object cast_ptr *C.git_tag } @@ -24,7 +30,7 @@ func (t Tag) Tagger() *Signature { 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) @@ -42,3 +48,179 @@ func (t Tag) TargetId() *Oid { func (t Tag) TargetType() ObjectType { return ObjectType(C.git_tag_target_type(t.cast_ptr)) } + +type TagsCollection struct { + repo *Repository +} + +func (c *TagsCollection) Create( + name string, commit *Commit, tagger *Signature, message string) (*Oid, error) { + + oid := new(Oid) + + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + cmessage := C.CString(message) + defer C.free(unsafe.Pointer(cmessage)) + + taggerSig, err := tagger.toC() + if err != nil { + return nil, err + } + defer C.git_signature_free(taggerSig) + + ctarget := commit.ptr + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + ret := C.git_tag_create(oid.toC(), c.repo.ptr, cname, ctarget, taggerSig, cmessage, 0) + if ret < 0 { + return nil, MakeGitError(ret) + } + + return oid, nil +} + +func (c *TagsCollection) Remove(name string) error { + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + cname := C.CString(name) + defer C.free(unsafe.Pointer(cname)) + + ret := C.git_tag_delete(c.repo.ptr, cname) + if ret < 0 { + return MakeGitError(ret) + } + + return nil +} + +// 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 +// https://libgit2.github.com/libgit2/#HEAD/group/tag/git_tag_create) and should +// not conflict with an already existing tag name. +// +// If force is true and a reference already exists with the given name, it'll be replaced. +// +// 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, 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() + + err := C.git_tag_create_lightweight(oid.toC(), c.repo.ptr, cname, ctarget, cbool(force)) + if err < 0 { + return nil, MakeGitError(err) + } + + return oid, nil +} + +// List returns the names of all the tags in the repository, +// eg: ["v1.0.1", "v2.0.0"]. +func (c *TagsCollection) List() ([]string, error) { + var strC C.git_strarray + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + ecode := C.git_tag_list(&strC, c.repo.ptr) + if ecode < 0 { + return nil, MakeGitError(ecode) + } + defer C.git_strarray_free(&strC) + + tags := makeStringsFromCStrings(strC.strings, int(strC.count)) + return tags, nil +} + +// ListWithMatch returns the names of all the tags in the repository +// that match a given pattern. +// +// The pattern is a standard fnmatch(3) pattern http://man7.org/linux/man-pages/man3/fnmatch.3.html +func (c *TagsCollection) ListWithMatch(pattern string) ([]string, error) { + var strC C.git_strarray + + patternC := C.CString(pattern) + defer C.free(unsafe.Pointer(patternC)) + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + ecode := C.git_tag_list_match(&strC, patternC, c.repo.ptr) + if ecode < 0 { + return nil, MakeGitError(ecode) + } + defer C.git_strarray_free(&strC) + + tags := makeStringsFromCStrings(strC.strings, int(strC.count)) + return tags, nil +} + +// TagForeachCallback is called for each tag in the repository. +// +// The name is the full ref name eg: "refs/tags/v1.0.0". +// +// Note that the callback is called for lightweight tags as well, +// so repo.LookupTag() will return an error for these tags. Use +// repo.References.Lookup() instead. +type TagForeachCallback func(name string, id *Oid) error +type tagForeachData struct { + callback TagForeachCallback + err error +} + +//export gitTagForeachCb +func gitTagForeachCb(name *C.char, id *C.git_oid, handle unsafe.Pointer) int { + payload := pointerHandles.Get(handle) + 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.err = err + return C.GIT_EUSER + } + + return 0 +} + +// Foreach calls the callback for each tag in the repository. +func (c *TagsCollection) Foreach(callback TagForeachCallback) error { + data := tagForeachData{ + callback: callback, + err: nil, + } + + handle := pointerHandles.Track(&data) + defer pointerHandles.Untrack(handle) + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + err := C._go_git_tag_foreach(c.repo.ptr, handle) + if err == C.GIT_EUSER { + return data.err + } + if err < 0 { + return MakeGitError(err) + } + + return nil +} |