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mirror of https://github.com/go-gitea/gitea synced 2024-12-24 01:24:26 +00:00
gitea/modules/git/notes.go
Filip Navara 52fda312df Fix reading git notes from nested trees (#8026)
* Fix reading notes from nested trees

The GIT documentation for notes states "Permitted pathnames have the
form ab/cd/ef/.../abcdef...: a sequence of directory names of two
hexadecimal digits each followed by a filename with the rest of
the object ID."

* Add test case

* Fix new lines
2019-09-12 09:14:41 +08:00

81 lines
1.8 KiB
Go

// Copyright 2019 The Gitea 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 (
"io/ioutil"
"gopkg.in/src-d/go-git.v4/plumbing/object"
)
// NotesRef is the git ref where Gitea will look for git-notes data.
// The value ("refs/notes/commits") is the default ref used by git-notes.
const NotesRef = "refs/notes/commits"
// Note stores information about a note created using git-notes.
type Note struct {
Message []byte
Commit *Commit
}
// GetNote retrieves the git-notes data for a given commit.
func GetNote(repo *Repository, commitID string, note *Note) error {
notes, err := repo.GetCommit(NotesRef)
if err != nil {
return err
}
remainingCommitID := commitID
path := ""
currentTree := notes.Tree.gogitTree
var file *object.File
for len(remainingCommitID) > 2 {
file, err = currentTree.File(remainingCommitID)
if err == nil {
path += remainingCommitID
break
}
if err == object.ErrFileNotFound {
currentTree, err = currentTree.Tree(remainingCommitID[0:2])
path += remainingCommitID[0:2] + "/"
remainingCommitID = remainingCommitID[2:]
}
if err != nil {
return err
}
}
blob := file.Blob
dataRc, err := blob.Reader()
if err != nil {
return err
}
defer dataRc.Close()
d, err := ioutil.ReadAll(dataRc)
if err != nil {
return err
}
note.Message = d
commitNodeIndex, commitGraphFile := repo.CommitNodeIndex()
if commitGraphFile != nil {
defer commitGraphFile.Close()
}
commitNode, err := commitNodeIndex.Get(notes.ID)
if err != nil {
return err
}
lastCommits, err := getLastCommitForPaths(commitNode, "", []string{path})
if err != nil {
return err
}
note.Commit = convertCommit(lastCommits[path])
return nil
}