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// Copyright 2015 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
"strings"
"github.com/mcuadros/go-version"
)
// TagPrefix tags prefix path on the repository
const TagPrefix = "refs/tags/"
// IsTagExist returns true if given tag exists in the repository.
func IsTagExist(repoPath, name string) bool {
return IsReferenceExist(repoPath, TagPrefix+name)
}
// IsTagExist returns true if given tag exists in the repository.
func (repo *Repository) IsTagExist(name string) bool {
return IsTagExist(repo.Path, name)
}
// CreateTag create one tag in the repository
func (repo *Repository) CreateTag(name, revision string) error {
_, err := NewCommand("tag", name, revision).RunInDir(repo.Path)
return err
}
func (repo *Repository) getTag(id SHA1) (*Tag, error) {
t, ok := repo.tagCache.Get(id.String())
if ok {
log("Hit cache: %s", id)
return t.(*Tag), nil
}
// Get tag type
tp, err := NewCommand("cat-file", "-t", id.String()).RunInDir(repo.Path)
if err != nil {
return nil, err
}
tp = strings.TrimSpace(tp)
// Tag is a commit.
if ObjectType(tp) == ObjectCommit {
tag := &Tag{
ID: id,
Object: id,
Type: string(ObjectCommit),
repo: repo,
}
repo.tagCache.Set(id.String(), tag)
return tag, nil
}
// Tag with message.
data, err := NewCommand("cat-file", "-p", id.String()).RunInDirBytes(repo.Path)
if err != nil {
return nil, err
}
tag, err := parseTagData(data)
if err != nil {
return nil, err
}
tag.ID = id
tag.repo = repo
repo.tagCache.Set(id.String(), tag)
return tag, nil
}
// GetTag returns a Git tag by given name.
func (repo *Repository) GetTag(name string) (*Tag, error) {
stdout, err := NewCommand("show-ref", "--tags", name).RunInDir(repo.Path)
if err != nil {
return nil, err
}
id, err := NewIDFromString(strings.Split(stdout, " ")[0])
if err != nil {
return nil, err
}
tag, err := repo.getTag(id)
if err != nil {
return nil, err
}
tag.Name = name
return tag, nil
}
// GetTagInfos returns all tag infos of the repository.
func (repo *Repository) GetTagInfos() ([]*Tag, error) {
// TODO this a slow implementation, makes one git command per tag
stdout, err := NewCommand("tag").RunInDir(repo.Path)
if err != nil {
return nil, err
}
tagNames := strings.Split(stdout, "\n")
var tags []*Tag
for _, tagName := range tagNames {
tagName = strings.TrimSpace(tagName)
if len(tagName) == 0 {
continue
}
commitID, err := NewCommand("rev-parse", tagName).RunInDir(repo.Path)
if err != nil {
return nil, err
}
commit, err := repo.GetCommit(commitID)
if err != nil {
return nil, err
}
tags = append(tags, &Tag{
Name: tagName,
Message: commit.Message(),
Object: commit.ID,
Tagger: commit.Author,
})
}
sortTagsByTime(tags)
return tags, nil
}
// GetTags returns all tags of the repository.
func (repo *Repository) GetTags() ([]string, error) {
cmd := NewCommand("tag", "-l")
if version.Compare(gitVersion, "2.0.0", ">=") {
cmd.AddArguments("--sort=-v:refname")
}
stdout, err := cmd.RunInDir(repo.Path)
if err != nil {
return nil, err
}
tags := strings.Split(stdout, "\n")
tags = tags[:len(tags)-1]
if version.Compare(gitVersion, "2.0.0", "<") {
version.Sort(tags)
// Reverse order
for i := 0; i < len(tags)/2; i++ {
j := len(tags) - i - 1
tags[i], tags[j] = tags[j], tags[i]
}
}
return tags, nil
}
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