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// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build gogit
package git
import (
"context"
"io"
"code.gitea.io/gitea/modules/log"
"github.com/go-git/go-git/v5/plumbing/object"
)
// GetNote retrieves the git-notes data for a given commit.
// FIXME: Add LastCommitCache support
func GetNote(ctx context.Context, repo *Repository, commitID string, note *Note) error {
log.Trace("Searching for git note corresponding to the commit %q in the repository %q", commitID, repo.Path)
notes, err := repo.GetCommit(NotesRef)
if err != nil {
if IsErrNotExist(err) {
return err
}
log.Error("Unable to get commit from ref %q. Error: %v", NotesRef, err)
return err
}
remainingCommitID := commitID
path := ""
currentTree := notes.Tree.gogitTree
log.Trace("Found tree with ID %q while searching for git note corresponding to the commit %q", currentTree.Entries[0].Name, commitID)
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 {
if err == object.ErrDirectoryNotFound {
return ErrNotExist{ID: remainingCommitID, RelPath: path}
}
log.Error("Unable to find git note corresponding to the commit %q. Error: %v", commitID, err)
return err
}
}
blob := file.Blob
dataRc, err := blob.Reader()
if err != nil {
log.Error("Unable to read blob with ID %q. Error: %v", blob.ID, err)
return err
}
defer dataRc.Close()
d, err := io.ReadAll(dataRc)
if err != nil {
log.Error("Unable to read blob with ID %q. Error: %v", blob.ID, err)
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(ctx, nil, commitNode, "", []string{path})
if err != nil {
log.Error("Unable to get the commit for the path %q. Error: %v", path, err)
return err
}
note.Commit = lastCommits[path]
return nil
}
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