bench-forgejo/modules/git/repo_index.go
zeripath 01087e9eef
Make Requests Processes and create process hierarchy. Associate OpenRepository with context. ()
This PR registers requests with the process manager and manages hierarchy within the processes.

Git repos are then associated with a context, (usually the request's context) - with sub commands using this context as their base context.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-11-30 20:06:32 +00:00

130 lines
3.7 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 (
"bytes"
"context"
"os"
"path/filepath"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/util"
)
// ReadTreeToIndex reads a treeish to the index
func (repo *Repository) ReadTreeToIndex(treeish string, indexFilename ...string) error {
if len(treeish) != 40 {
res, err := NewCommandContext(repo.Ctx, "rev-parse", "--verify", treeish).RunInDir(repo.Path)
if err != nil {
return err
}
if len(res) > 0 {
treeish = res[:len(res)-1]
}
}
id, err := NewIDFromString(treeish)
if err != nil {
return err
}
return repo.readTreeToIndex(id, indexFilename...)
}
func (repo *Repository) readTreeToIndex(id SHA1, indexFilename ...string) error {
var env []string
if len(indexFilename) > 0 {
env = append(os.Environ(), "GIT_INDEX_FILE="+indexFilename[0])
}
_, err := NewCommandContext(repo.Ctx, "read-tree", id.String()).RunInDirWithEnv(repo.Path, env)
if err != nil {
return err
}
return nil
}
// ReadTreeToTemporaryIndex reads a treeish to a temporary index file
func (repo *Repository) ReadTreeToTemporaryIndex(treeish string) (filename, tmpDir string, cancel context.CancelFunc, err error) {
tmpDir, err = os.MkdirTemp("", "index")
if err != nil {
return
}
filename = filepath.Join(tmpDir, ".tmp-index")
cancel = func() {
err := util.RemoveAll(tmpDir)
if err != nil {
log.Error("failed to remove tmp index file: %v", err)
}
}
err = repo.ReadTreeToIndex(treeish, filename)
if err != nil {
defer cancel()
return "", "", func() {}, err
}
return
}
// EmptyIndex empties the index
func (repo *Repository) EmptyIndex() error {
_, err := NewCommandContext(repo.Ctx, "read-tree", "--empty").RunInDir(repo.Path)
return err
}
// LsFiles checks if the given filenames are in the index
func (repo *Repository) LsFiles(filenames ...string) ([]string, error) {
cmd := NewCommandContext(repo.Ctx, "ls-files", "-z", "--")
for _, arg := range filenames {
if arg != "" {
cmd.AddArguments(arg)
}
}
res, err := cmd.RunInDirBytes(repo.Path)
if err != nil {
return nil, err
}
filelist := make([]string, 0, len(filenames))
for _, line := range bytes.Split(res, []byte{'\000'}) {
filelist = append(filelist, string(line))
}
return filelist, err
}
// RemoveFilesFromIndex removes given filenames from the index - it does not check whether they are present.
func (repo *Repository) RemoveFilesFromIndex(filenames ...string) error {
cmd := NewCommandContext(repo.Ctx, "update-index", "--remove", "-z", "--index-info")
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
buffer := new(bytes.Buffer)
for _, file := range filenames {
if file != "" {
buffer.WriteString("0 0000000000000000000000000000000000000000\t")
buffer.WriteString(file)
buffer.WriteByte('\000')
}
}
return cmd.RunInDirFullPipeline(repo.Path, stdout, stderr, bytes.NewReader(buffer.Bytes()))
}
// AddObjectToIndex adds the provided object hash to the index at the provided filename
func (repo *Repository) AddObjectToIndex(mode string, object SHA1, filename string) error {
cmd := NewCommandContext(repo.Ctx, "update-index", "--add", "--replace", "--cacheinfo", mode, object.String(), filename)
_, err := cmd.RunInDir(repo.Path)
return err
}
// WriteTree writes the current index as a tree to the object db and returns its hash
func (repo *Repository) WriteTree() (*Tree, error) {
res, err := NewCommandContext(repo.Ctx, "write-tree").RunInDir(repo.Path)
if err != nil {
return nil, err
}
id, err := NewIDFromString(strings.TrimSpace(res))
if err != nil {
return nil, err
}
return NewTree(repo, id), nil
}