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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 (
"bytes"
"sort"
"strings"
)
// Tag represents a Git tag.
type Tag struct {
Name string
ID SHA1
repo *Repository
Object SHA1 // The id of this commit object
Type string
Tagger *Signature
Message string
}
// Commit return the commit of the tag reference
func (tag *Tag) Commit() (*Commit, error) {
return tag.repo.getCommit(tag.Object)
}
// Parse commit information from the (uncompressed) raw
// data from the commit object.
// \n\n separate headers from message
func parseTagData(data []byte) (*Tag, error) {
tag := new(Tag)
// we now have the contents of the commit object. Let's investigate...
nextline := 0
l:
for {
eol := bytes.IndexByte(data[nextline:], '\n')
switch {
case eol > 0:
line := data[nextline : nextline+eol]
spacepos := bytes.IndexByte(line, ' ')
reftype := line[:spacepos]
switch string(reftype) {
case "object":
id, err := NewIDFromString(string(line[spacepos+1:]))
if err != nil {
return nil, err
}
tag.Object = id
case "type":
// A commit can have one or more parents
tag.Type = string(line[spacepos+1:])
case "tagger":
sig, err := newSignatureFromCommitline(line[spacepos+1:])
if err != nil {
return nil, err
}
tag.Tagger = sig
}
nextline += eol + 1
case eol == 0:
tag.Message = strings.TrimRight(string(data[nextline+1:]), "\n")
break l
default:
break l
}
}
return tag, nil
}
type tagSorter []*Tag
func (ts tagSorter) Len() int {
return len([]*Tag(ts))
}
func (ts tagSorter) Less(i, j int) bool {
return []*Tag(ts)[i].Tagger.When.After([]*Tag(ts)[j].Tagger.When)
}
func (ts tagSorter) Swap(i, j int) {
[]*Tag(ts)[i], []*Tag(ts)[j] = []*Tag(ts)[j], []*Tag(ts)[i]
}
// sortTagsByTime
func sortTagsByTime(tags []*Tag) {
sorter := tagSorter(tags)
sort.Sort(sorter)
}
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