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gitea/modules/git/tag.go
Lunny Xiao 408a484224
Adjust object format interface (#28469)
- Remove `ObjectFormatID`
- Remove function `ObjectFormatFromID`.
- Use `Sha1ObjectFormat` directly but not a pointer because it's an
empty struct.
- Store `ObjectFormatName` in `repository` struct
2023-12-17 11:56:08 +00:00

109 lines
2.5 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"bytes"
"sort"
"strings"
)
const (
beginpgp = "\n-----BEGIN PGP SIGNATURE-----\n"
endpgp = "\n-----END PGP SIGNATURE-----"
)
// Tag represents a Git tag.
type Tag struct {
Name string
ID ObjectID
Object ObjectID // The id of this commit object
Type string
Tagger *Signature
Message string
Signature *CommitGPGSignature
}
// Commit return the commit of the tag reference
func (tag *Tag) Commit(gitRepo *Repository) (*Commit, error) {
return gitRepo.getCommit(tag.Object)
}
// Parse commit information from the (uncompressed) raw
// data from the commit object.
// \n\n separate headers from message
func parseTagData(objectFormat ObjectFormat, data []byte) (*Tag, error) {
tag := new(Tag)
tag.ID = objectFormat.EmptyObjectID()
tag.Object = objectFormat.EmptyObjectID()
tag.Tagger = &Signature{}
// 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 := objectFormat.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 = string(data[nextline+1:])
break l
default:
break l
}
}
idx := strings.LastIndex(tag.Message, beginpgp)
if idx > 0 {
endSigIdx := strings.Index(tag.Message[idx:], endpgp)
if endSigIdx > 0 {
tag.Signature = &CommitGPGSignature{
Signature: tag.Message[idx+1 : idx+endSigIdx+len(endpgp)],
Payload: string(data[:bytes.LastIndex(data, []byte(beginpgp))+1]),
}
tag.Message = tag.Message[:idx+1]
}
}
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)
}