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// Copyright 2014 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 (
"errors"
"strings"
"github.com/Unknwon/com"
)
func IsTagExist(repoPath, tagName string) bool {
_, _, err := com.ExecCmdDir(repoPath, "git", "show-ref", "--verify", "refs/tags/"+tagName)
return err == nil
}
func (repo *Repository) IsTagExist(tagName string) bool {
return IsTagExist(repo.Path, tagName)
}
// GetTags returns all tags of given repository.
func (repo *Repository) GetTags() ([]string, error) {
if gitVer.AtLeast(MustParseVersion("2.0.0")) {
return repo.getTagsReversed()
}
stdout, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", "-l")
if err != nil {
return nil, errors.New(stderr)
}
tags := strings.Split(stdout, "\n")
return tags[:len(tags)-1], nil
}
func (repo *Repository) getTagsReversed() ([]string, error) {
stdout, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", "-l", "--sort=-v:refname")
if err != nil {
return nil, errors.New(stderr)
}
tags := strings.Split(stdout, "\n")
return tags[:len(tags)-1], nil
}
func (repo *Repository) CreateTag(tagName, idStr string) error {
_, stderr, err := com.ExecCmdDir(repo.Path, "git", "tag", tagName, idStr)
if err != nil {
return errors.New(stderr)
}
return nil
}
func (repo *Repository) getTag(id sha1) (*Tag, error) {
if repo.tagCache != nil {
if t, ok := repo.tagCache[id]; ok {
return t, nil
}
} else {
repo.tagCache = make(map[sha1]*Tag, 10)
}
// Get tag type.
tp, stderr, err := com.ExecCmdDir(repo.Path, "git", "cat-file", "-t", id.String())
if err != nil {
return nil, errors.New(stderr)
}
tp = strings.TrimSpace(tp)
// Tag is a commit.
if ObjectType(tp) == COMMIT {
tag := &Tag{
Id: id,
Object: id,
Type: string(COMMIT),
repo: repo,
}
repo.tagCache[id] = tag
return tag, nil
}
// Tag with message.
data, bytErr, err := com.ExecCmdDirBytes(repo.Path, "git", "cat-file", "-p", id.String())
if err != nil {
return nil, errors.New(string(bytErr))
}
tag, err := parseTagData(data)
if err != nil {
return nil, err
}
tag.Id = id
tag.repo = repo
repo.tagCache[id] = tag
return tag, nil
}
// GetTag returns a Git tag by given name.
func (repo *Repository) GetTag(tagName string) (*Tag, error) {
stdout, stderr, err := com.ExecCmdDir(repo.Path, "git", "show-ref", "--tags", tagName)
if err != nil {
return nil, errors.New(stderr)
}
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 = tagName
return tag, nil
}
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