mirror of
https://github.com/go-gitea/gitea.git
synced 2026-08-01 09:30:38 +00:00
wxiaoguang
9dc04289aa
before: gitrepo vs git packages after: git package fully handle all git operations by the way, use `WithRepo(repo)` instead of `WithDir(repo.Path)` to hide path details. benefits: 1. remove all unnecessary wrappers, developers no need to struggle with "which package should be used" 2. simplify code, RepositoryFacade can (will) be used everywhere, all "path" details are (will be) hidden
123 lines
3.0 KiB
Go
123 lines
3.0 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"bytes"
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"context"
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"sort"
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"gitea.dev/modules/util"
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)
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// Tag represents a Git tag.
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type Tag struct {
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CommitMessage
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Name string
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ID ObjectID
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Object ObjectID // The id of this commit object
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Type string
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Tagger *Signature
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Signature *CommitSignature
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}
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func parsePayloadSignature(data []byte, messageStart int) (payload, msg, sign string) {
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pos := messageStart
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signStart, signEnd := -1, -1
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for {
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eol := bytes.IndexByte(data[pos:], '\n')
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if eol < 0 {
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break
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}
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line := data[pos : pos+eol]
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signType, hasPrefix := bytes.CutPrefix(line, []byte("-----BEGIN "))
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signType, hasSuffix := bytes.CutSuffix(signType, []byte(" SIGNATURE-----"))
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if hasPrefix && hasSuffix {
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signEndBytes := append([]byte("\n-----END "), signType...)
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signEndBytes = append(signEndBytes, []byte(" SIGNATURE-----")...)
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signEnd = bytes.Index(data[pos:], signEndBytes)
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if signEnd != -1 {
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signStart = pos
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signEnd = pos + signEnd + len(signEndBytes)
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}
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}
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pos += eol + 1
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}
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if signStart != -1 && signEnd != -1 {
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msgEnd := max(messageStart, signStart-1)
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return string(data[:msgEnd]), string(data[messageStart:msgEnd]), string(data[signStart:signEnd])
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}
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return string(data), string(data[messageStart:]), ""
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}
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// Parse commit information from the (uncompressed) raw
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// data from the commit object.
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// \n\n separate headers from message
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func parseTagData(objectFormat ObjectFormat, data []byte) (*Tag, error) {
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tag := new(Tag)
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tag.ID = objectFormat.EmptyObjectID()
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tag.Object = objectFormat.EmptyObjectID()
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tag.Tagger = &Signature{}
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pos := 0
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for {
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eol := bytes.IndexByte(data[pos:], '\n')
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if eol == -1 {
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break // shouldn't happen, but could just tolerate it
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}
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if eol == 0 {
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pos++
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break // end of headers
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}
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line := data[pos : pos+eol]
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key, val, _ := bytes.Cut(line, []byte(" "))
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switch string(key) {
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case "object":
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id, err := NewIDFromString(string(val))
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if err != nil {
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return nil, err
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}
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tag.Object = id
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case "type":
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tag.Type = string(val) // A commit can have one or more parents
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case "tagger":
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tag.Tagger = parseSignatureFromCommitLine(util.UnsafeBytesToString(val))
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}
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pos += eol + 1
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}
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payload, msg, sign := parsePayloadSignature(data, pos)
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tag.MessageRaw = msg
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if len(sign) > 0 {
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tag.Signature = &CommitSignature{Signature: sign, Payload: payload}
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}
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return tag, nil
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}
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type tagSorter []*Tag
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func (ts tagSorter) Len() int {
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return len([]*Tag(ts))
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}
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func (ts tagSorter) Less(i, j int) bool {
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return []*Tag(ts)[i].Tagger.When.After([]*Tag(ts)[j].Tagger.When)
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}
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func (ts tagSorter) Swap(i, j int) {
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[]*Tag(ts)[i], []*Tag(ts)[j] = []*Tag(ts)[j], []*Tag(ts)[i]
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}
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// sortTagsByTime
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func sortTagsByTime(tags []*Tag) {
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sorter := tagSorter(tags)
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sort.Sort(sorter)
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}
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// IsTagExist returns true if given tag exists in the repository.
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func IsTagExist(ctx context.Context, repo RepositoryFacade, name string) bool {
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return IsReferenceExist(ctx, repo, TagPrefix+name)
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}
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