mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-22 12:54:53 -05:00
42724b09c1
Try to fix #31792 Credit to @jeroenlaylo Copied from https://github.com/go-gitea/gitea/issues/31792#issuecomment-2311920520 --------- Co-authored-by: wxiaoguang <wxiaoguang@gmail.com> (cherry picked from commit feca8802b85dd75090c533ebdb92835d3d529f17)
169 lines
5 KiB
Go
169 lines
5 KiB
Go
// Copyright 2019 The Gitea 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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"os"
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"path/filepath"
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"strings"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/util"
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)
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// ReadTreeToIndex reads a treeish to the index
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func (repo *Repository) ReadTreeToIndex(treeish string, indexFilename ...string) error {
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objectFormat, err := repo.GetObjectFormat()
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if err != nil {
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return err
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}
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if len(treeish) != objectFormat.FullLength() {
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res, _, err := NewCommand(repo.Ctx, "rev-parse", "--verify").AddDynamicArguments(treeish).RunStdString(&RunOpts{Dir: repo.Path})
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if err != nil {
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return err
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}
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if len(res) > 0 {
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treeish = res[:len(res)-1]
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}
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}
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id, err := NewIDFromString(treeish)
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if err != nil {
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return err
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}
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return repo.readTreeToIndex(id, indexFilename...)
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}
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func (repo *Repository) readTreeToIndex(id ObjectID, indexFilename ...string) error {
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var env []string
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if len(indexFilename) > 0 {
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env = append(os.Environ(), "GIT_INDEX_FILE="+indexFilename[0])
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}
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_, _, err := NewCommand(repo.Ctx, "read-tree").AddDynamicArguments(id.String()).RunStdString(&RunOpts{Dir: repo.Path, Env: env})
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if err != nil {
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return err
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}
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return nil
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}
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// ReadTreeToTemporaryIndex reads a treeish to a temporary index file
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func (repo *Repository) ReadTreeToTemporaryIndex(treeish string) (tmpIndexFilename, tmpDir string, cancel context.CancelFunc, err error) {
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defer func() {
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// if error happens and there is a cancel function, do clean up
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if err != nil && cancel != nil {
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cancel()
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cancel = nil
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}
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}()
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removeDirFn := func(dir string) func() { // it can't use the return value "tmpDir" directly because it is empty when error occurs
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return func() {
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if err := util.RemoveAll(dir); err != nil {
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log.Error("failed to remove tmp index dir: %v", err)
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}
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}
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}
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tmpDir, err = os.MkdirTemp("", "index")
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if err != nil {
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return "", "", nil, err
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}
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tmpIndexFilename = filepath.Join(tmpDir, ".tmp-index")
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cancel = removeDirFn(tmpDir)
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err = repo.ReadTreeToIndex(treeish, tmpIndexFilename)
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if err != nil {
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return "", "", cancel, err
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}
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return tmpIndexFilename, tmpDir, cancel, err
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}
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// EmptyIndex empties the index
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func (repo *Repository) EmptyIndex() error {
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_, _, err := NewCommand(repo.Ctx, "read-tree", "--empty").RunStdString(&RunOpts{Dir: repo.Path})
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return err
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}
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// LsFiles checks if the given filenames are in the index
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func (repo *Repository) LsFiles(filenames ...string) ([]string, error) {
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cmd := NewCommand(repo.Ctx, "ls-files", "-z").AddDashesAndList(filenames...)
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res, _, err := cmd.RunStdBytes(&RunOpts{Dir: repo.Path})
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if err != nil {
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return nil, err
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}
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filelist := make([]string, 0, len(filenames))
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for _, line := range bytes.Split(res, []byte{'\000'}) {
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filelist = append(filelist, string(line))
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}
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return filelist, err
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}
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// RemoveFilesFromIndex removes given filenames from the index - it does not check whether they are present.
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func (repo *Repository) RemoveFilesFromIndex(filenames ...string) error {
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objectFormat, err := repo.GetObjectFormat()
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if err != nil {
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return err
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}
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cmd := NewCommand(repo.Ctx, "update-index", "--remove", "-z", "--index-info")
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stdout := new(bytes.Buffer)
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stderr := new(bytes.Buffer)
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buffer := new(bytes.Buffer)
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for _, file := range filenames {
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if file != "" {
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// using format: mode SP type SP sha1 TAB path
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buffer.WriteString("0 blob " + objectFormat.EmptyObjectID().String() + "\t" + file + "\000")
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}
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}
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return cmd.Run(&RunOpts{
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Dir: repo.Path,
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Stdin: bytes.NewReader(buffer.Bytes()),
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Stdout: stdout,
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Stderr: stderr,
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})
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}
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type IndexObjectInfo struct {
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Mode string
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Object ObjectID
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Filename string
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}
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// AddObjectsToIndex adds the provided object hashes to the index at the provided filenames
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func (repo *Repository) AddObjectsToIndex(objects ...IndexObjectInfo) error {
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cmd := NewCommand(repo.Ctx, "update-index", "--add", "--replace", "-z", "--index-info")
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stdout := new(bytes.Buffer)
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stderr := new(bytes.Buffer)
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buffer := new(bytes.Buffer)
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for _, object := range objects {
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// using format: mode SP type SP sha1 TAB path
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buffer.WriteString(object.Mode + " blob " + object.Object.String() + "\t" + object.Filename + "\000")
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}
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return cmd.Run(&RunOpts{
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Dir: repo.Path,
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Stdin: bytes.NewReader(buffer.Bytes()),
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Stdout: stdout,
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Stderr: stderr,
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})
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}
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// AddObjectToIndex adds the provided object hash to the index at the provided filename
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func (repo *Repository) AddObjectToIndex(mode string, object ObjectID, filename string) error {
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return repo.AddObjectsToIndex(IndexObjectInfo{Mode: mode, Object: object, Filename: filename})
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}
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// WriteTree writes the current index as a tree to the object db and returns its hash
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func (repo *Repository) WriteTree() (*Tree, error) {
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stdout, _, runErr := NewCommand(repo.Ctx, "write-tree").RunStdString(&RunOpts{Dir: repo.Path})
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if runErr != nil {
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return nil, runErr
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}
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id, err := NewIDFromString(strings.TrimSpace(stdout))
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if err != nil {
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return nil, err
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}
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return NewTree(repo, id), nil
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}
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