Merge branch 'dev' of https://github.com/gogits/Gogs into issue/281

Conflicts:
	modules/base/tool.go

1 files changed, 104 insertions, 0 deletions

diff --git a/modules/git/repo_tag.go b/modules/git/repo_tag.go
new file mode 100644
index 00000000..21818f3e
--- /dev/null
+++ b/modules/git/repo_tag.go
@@ -0,0 +1,104 @@
+// 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) {
+	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) 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)
+	}
+
+	// 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
+}