mirror of
https://github.com/go-gitea/gitea
synced 2024-11-05 05:39:14 +01:00
660 lines
14 KiB
Go
660 lines
14 KiB
Go
package git
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
"io"
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
|
|
"gopkg.in/src-d/go-billy.v4/util"
|
|
"gopkg.in/src-d/go-git.v4/plumbing"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/filemode"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/format/gitignore"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/format/index"
|
|
"gopkg.in/src-d/go-git.v4/plumbing/object"
|
|
"gopkg.in/src-d/go-git.v4/utils/ioutil"
|
|
"gopkg.in/src-d/go-git.v4/utils/merkletrie"
|
|
"gopkg.in/src-d/go-git.v4/utils/merkletrie/filesystem"
|
|
mindex "gopkg.in/src-d/go-git.v4/utils/merkletrie/index"
|
|
"gopkg.in/src-d/go-git.v4/utils/merkletrie/noder"
|
|
)
|
|
|
|
var (
|
|
// ErrDestinationExists in an Move operation means that the target exists on
|
|
// the worktree.
|
|
ErrDestinationExists = errors.New("destination exists")
|
|
// ErrGlobNoMatches in an AddGlob if the glob pattern does not match any
|
|
// files in the worktree.
|
|
ErrGlobNoMatches = errors.New("glob pattern did not match any files")
|
|
)
|
|
|
|
// Status returns the working tree status.
|
|
func (w *Worktree) Status() (Status, error) {
|
|
var hash plumbing.Hash
|
|
|
|
ref, err := w.r.Head()
|
|
if err != nil && err != plumbing.ErrReferenceNotFound {
|
|
return nil, err
|
|
}
|
|
|
|
if err == nil {
|
|
hash = ref.Hash()
|
|
}
|
|
|
|
return w.status(hash)
|
|
}
|
|
|
|
func (w *Worktree) status(commit plumbing.Hash) (Status, error) {
|
|
s := make(Status)
|
|
|
|
left, err := w.diffCommitWithStaging(commit, false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, ch := range left {
|
|
a, err := ch.Action()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
fs := s.File(nameFromAction(&ch))
|
|
fs.Worktree = Unmodified
|
|
|
|
switch a {
|
|
case merkletrie.Delete:
|
|
s.File(ch.From.String()).Staging = Deleted
|
|
case merkletrie.Insert:
|
|
s.File(ch.To.String()).Staging = Added
|
|
case merkletrie.Modify:
|
|
s.File(ch.To.String()).Staging = Modified
|
|
}
|
|
}
|
|
|
|
right, err := w.diffStagingWithWorktree(false)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, ch := range right {
|
|
a, err := ch.Action()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
fs := s.File(nameFromAction(&ch))
|
|
if fs.Staging == Untracked {
|
|
fs.Staging = Unmodified
|
|
}
|
|
|
|
switch a {
|
|
case merkletrie.Delete:
|
|
fs.Worktree = Deleted
|
|
case merkletrie.Insert:
|
|
fs.Worktree = Untracked
|
|
fs.Staging = Untracked
|
|
case merkletrie.Modify:
|
|
fs.Worktree = Modified
|
|
}
|
|
}
|
|
|
|
return s, nil
|
|
}
|
|
|
|
func nameFromAction(ch *merkletrie.Change) string {
|
|
name := ch.To.String()
|
|
if name == "" {
|
|
return ch.From.String()
|
|
}
|
|
|
|
return name
|
|
}
|
|
|
|
func (w *Worktree) diffStagingWithWorktree(reverse bool) (merkletrie.Changes, error) {
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
from := mindex.NewRootNode(idx)
|
|
submodules, err := w.getSubmodulesStatus()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
to := filesystem.NewRootNode(w.Filesystem, submodules)
|
|
|
|
var c merkletrie.Changes
|
|
if reverse {
|
|
c, err = merkletrie.DiffTree(to, from, diffTreeIsEquals)
|
|
} else {
|
|
c, err = merkletrie.DiffTree(from, to, diffTreeIsEquals)
|
|
}
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return w.excludeIgnoredChanges(c), nil
|
|
}
|
|
|
|
func (w *Worktree) excludeIgnoredChanges(changes merkletrie.Changes) merkletrie.Changes {
|
|
patterns, err := gitignore.ReadPatterns(w.Filesystem, nil)
|
|
if err != nil {
|
|
return changes
|
|
}
|
|
|
|
patterns = append(patterns, w.Excludes...)
|
|
|
|
if len(patterns) == 0 {
|
|
return changes
|
|
}
|
|
|
|
m := gitignore.NewMatcher(patterns)
|
|
|
|
var res merkletrie.Changes
|
|
for _, ch := range changes {
|
|
var path []string
|
|
for _, n := range ch.To {
|
|
path = append(path, n.Name())
|
|
}
|
|
if len(path) == 0 {
|
|
for _, n := range ch.From {
|
|
path = append(path, n.Name())
|
|
}
|
|
}
|
|
if len(path) != 0 {
|
|
isDir := (len(ch.To) > 0 && ch.To.IsDir()) || (len(ch.From) > 0 && ch.From.IsDir())
|
|
if m.Match(path, isDir) {
|
|
continue
|
|
}
|
|
}
|
|
res = append(res, ch)
|
|
}
|
|
return res
|
|
}
|
|
|
|
func (w *Worktree) getSubmodulesStatus() (map[string]plumbing.Hash, error) {
|
|
o := map[string]plumbing.Hash{}
|
|
|
|
sub, err := w.Submodules()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
status, err := sub.Status()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, s := range status {
|
|
if s.Current.IsZero() {
|
|
o[s.Path] = s.Expected
|
|
continue
|
|
}
|
|
|
|
o[s.Path] = s.Current
|
|
}
|
|
|
|
return o, nil
|
|
}
|
|
|
|
func (w *Worktree) diffCommitWithStaging(commit plumbing.Hash, reverse bool) (merkletrie.Changes, error) {
|
|
var t *object.Tree
|
|
if !commit.IsZero() {
|
|
c, err := w.r.CommitObject(commit)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
t, err = c.Tree()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return w.diffTreeWithStaging(t, reverse)
|
|
}
|
|
|
|
func (w *Worktree) diffTreeWithStaging(t *object.Tree, reverse bool) (merkletrie.Changes, error) {
|
|
var from noder.Noder
|
|
if t != nil {
|
|
from = object.NewTreeRootNode(t)
|
|
}
|
|
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
to := mindex.NewRootNode(idx)
|
|
|
|
if reverse {
|
|
return merkletrie.DiffTree(to, from, diffTreeIsEquals)
|
|
}
|
|
|
|
return merkletrie.DiffTree(from, to, diffTreeIsEquals)
|
|
}
|
|
|
|
var emptyNoderHash = make([]byte, 24)
|
|
|
|
// diffTreeIsEquals is a implementation of noder.Equals, used to compare
|
|
// noder.Noder, it compare the content and the length of the hashes.
|
|
//
|
|
// Since some of the noder.Noder implementations doesn't compute a hash for
|
|
// some directories, if any of the hashes is a 24-byte slice of zero values
|
|
// the comparison is not done and the hashes are take as different.
|
|
func diffTreeIsEquals(a, b noder.Hasher) bool {
|
|
hashA := a.Hash()
|
|
hashB := b.Hash()
|
|
|
|
if bytes.Equal(hashA, emptyNoderHash) || bytes.Equal(hashB, emptyNoderHash) {
|
|
return false
|
|
}
|
|
|
|
return bytes.Equal(hashA, hashB)
|
|
}
|
|
|
|
// Add adds the file contents of a file in the worktree to the index. if the
|
|
// file is already staged in the index no error is returned. If a file deleted
|
|
// from the Workspace is given, the file is removed from the index. If a
|
|
// directory given, adds the files and all his sub-directories recursively in
|
|
// the worktree to the index. If any of the files is already staged in the index
|
|
// no error is returned. When path is a file, the blob.Hash is returned.
|
|
func (w *Worktree) Add(path string) (plumbing.Hash, error) {
|
|
// TODO(mcuadros): remove plumbing.Hash from signature at v5.
|
|
s, err := w.Status()
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
var h plumbing.Hash
|
|
var added bool
|
|
|
|
fi, err := w.Filesystem.Lstat(path)
|
|
if err != nil || !fi.IsDir() {
|
|
added, h, err = w.doAddFile(idx, s, path)
|
|
} else {
|
|
added, err = w.doAddDirectory(idx, s, path)
|
|
}
|
|
|
|
if err != nil {
|
|
return h, err
|
|
}
|
|
|
|
if !added {
|
|
return h, nil
|
|
}
|
|
|
|
return h, w.r.Storer.SetIndex(idx)
|
|
}
|
|
|
|
func (w *Worktree) doAddDirectory(idx *index.Index, s Status, directory string) (added bool, err error) {
|
|
files, err := w.Filesystem.ReadDir(directory)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
for _, file := range files {
|
|
name := path.Join(directory, file.Name())
|
|
|
|
var a bool
|
|
if file.IsDir() {
|
|
if file.Name() == GitDirName {
|
|
// ignore special git directory
|
|
continue
|
|
}
|
|
a, err = w.doAddDirectory(idx, s, name)
|
|
} else {
|
|
a, _, err = w.doAddFile(idx, s, name)
|
|
}
|
|
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if !added && a {
|
|
added = true
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// AddGlob adds all paths, matching pattern, to the index. If pattern matches a
|
|
// directory path, all directory contents are added to the index recursively. No
|
|
// error is returned if all matching paths are already staged in index.
|
|
func (w *Worktree) AddGlob(pattern string) error {
|
|
files, err := util.Glob(w.Filesystem, pattern)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(files) == 0 {
|
|
return ErrGlobNoMatches
|
|
}
|
|
|
|
s, err := w.Status()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var saveIndex bool
|
|
for _, file := range files {
|
|
fi, err := w.Filesystem.Lstat(file)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var added bool
|
|
if fi.IsDir() {
|
|
added, err = w.doAddDirectory(idx, s, file)
|
|
} else {
|
|
added, _, err = w.doAddFile(idx, s, file)
|
|
}
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !saveIndex && added {
|
|
saveIndex = true
|
|
}
|
|
}
|
|
|
|
if saveIndex {
|
|
return w.r.Storer.SetIndex(idx)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// doAddFile create a new blob from path and update the index, added is true if
|
|
// the file added is different from the index.
|
|
func (w *Worktree) doAddFile(idx *index.Index, s Status, path string) (added bool, h plumbing.Hash, err error) {
|
|
if s.File(path).Worktree == Unmodified {
|
|
return false, h, nil
|
|
}
|
|
|
|
h, err = w.copyFileToStorage(path)
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
added = true
|
|
h, err = w.deleteFromIndex(idx, path)
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
if err := w.addOrUpdateFileToIndex(idx, path, h); err != nil {
|
|
return false, h, err
|
|
}
|
|
|
|
return true, h, err
|
|
}
|
|
|
|
func (w *Worktree) copyFileToStorage(path string) (hash plumbing.Hash, err error) {
|
|
fi, err := w.Filesystem.Lstat(path)
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
obj := w.r.Storer.NewEncodedObject()
|
|
obj.SetType(plumbing.BlobObject)
|
|
obj.SetSize(fi.Size())
|
|
|
|
writer, err := obj.Writer()
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
defer ioutil.CheckClose(writer, &err)
|
|
|
|
if fi.Mode()&os.ModeSymlink != 0 {
|
|
err = w.fillEncodedObjectFromSymlink(writer, path, fi)
|
|
} else {
|
|
err = w.fillEncodedObjectFromFile(writer, path, fi)
|
|
}
|
|
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
return w.r.Storer.SetEncodedObject(obj)
|
|
}
|
|
|
|
func (w *Worktree) fillEncodedObjectFromFile(dst io.Writer, path string, fi os.FileInfo) (err error) {
|
|
src, err := w.Filesystem.Open(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer ioutil.CheckClose(src, &err)
|
|
|
|
if _, err := io.Copy(dst, src); err != nil {
|
|
return err
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
func (w *Worktree) fillEncodedObjectFromSymlink(dst io.Writer, path string, fi os.FileInfo) error {
|
|
target, err := w.Filesystem.Readlink(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = dst.Write([]byte(target))
|
|
return err
|
|
}
|
|
|
|
func (w *Worktree) addOrUpdateFileToIndex(idx *index.Index, filename string, h plumbing.Hash) error {
|
|
e, err := idx.Entry(filename)
|
|
if err != nil && err != index.ErrEntryNotFound {
|
|
return err
|
|
}
|
|
|
|
if err == index.ErrEntryNotFound {
|
|
return w.doAddFileToIndex(idx, filename, h)
|
|
}
|
|
|
|
return w.doUpdateFileToIndex(e, filename, h)
|
|
}
|
|
|
|
func (w *Worktree) doAddFileToIndex(idx *index.Index, filename string, h plumbing.Hash) error {
|
|
return w.doUpdateFileToIndex(idx.Add(filename), filename, h)
|
|
}
|
|
|
|
func (w *Worktree) doUpdateFileToIndex(e *index.Entry, filename string, h plumbing.Hash) error {
|
|
info, err := w.Filesystem.Lstat(filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
e.Hash = h
|
|
e.ModifiedAt = info.ModTime()
|
|
e.Mode, err = filemode.NewFromOSFileMode(info.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if e.Mode.IsRegular() {
|
|
e.Size = uint32(info.Size())
|
|
}
|
|
|
|
fillSystemInfo(e, info.Sys())
|
|
return nil
|
|
}
|
|
|
|
// Remove removes files from the working tree and from the index.
|
|
func (w *Worktree) Remove(path string) (plumbing.Hash, error) {
|
|
// TODO(mcuadros): remove plumbing.Hash from signature at v5.
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
var h plumbing.Hash
|
|
|
|
fi, err := w.Filesystem.Lstat(path)
|
|
if err != nil || !fi.IsDir() {
|
|
h, err = w.doRemoveFile(idx, path)
|
|
} else {
|
|
_, err = w.doRemoveDirectory(idx, path)
|
|
}
|
|
if err != nil {
|
|
return h, err
|
|
}
|
|
|
|
return h, w.r.Storer.SetIndex(idx)
|
|
}
|
|
|
|
func (w *Worktree) doRemoveDirectory(idx *index.Index, directory string) (removed bool, err error) {
|
|
files, err := w.Filesystem.ReadDir(directory)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
for _, file := range files {
|
|
name := path.Join(directory, file.Name())
|
|
|
|
var r bool
|
|
if file.IsDir() {
|
|
r, err = w.doRemoveDirectory(idx, name)
|
|
} else {
|
|
_, err = w.doRemoveFile(idx, name)
|
|
if err == index.ErrEntryNotFound {
|
|
err = nil
|
|
}
|
|
}
|
|
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if !removed && r {
|
|
removed = true
|
|
}
|
|
}
|
|
|
|
err = w.removeEmptyDirectory(directory)
|
|
return
|
|
}
|
|
|
|
func (w *Worktree) removeEmptyDirectory(path string) error {
|
|
files, err := w.Filesystem.ReadDir(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(files) != 0 {
|
|
return nil
|
|
}
|
|
|
|
return w.Filesystem.Remove(path)
|
|
}
|
|
|
|
func (w *Worktree) doRemoveFile(idx *index.Index, path string) (plumbing.Hash, error) {
|
|
hash, err := w.deleteFromIndex(idx, path)
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
return hash, w.deleteFromFilesystem(path)
|
|
}
|
|
|
|
func (w *Worktree) deleteFromIndex(idx *index.Index, path string) (plumbing.Hash, error) {
|
|
e, err := idx.Remove(path)
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
return e.Hash, nil
|
|
}
|
|
|
|
func (w *Worktree) deleteFromFilesystem(path string) error {
|
|
err := w.Filesystem.Remove(path)
|
|
if os.IsNotExist(err) {
|
|
return nil
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
// RemoveGlob removes all paths, matching pattern, from the index. If pattern
|
|
// matches a directory path, all directory contents are removed from the index
|
|
// recursively.
|
|
func (w *Worktree) RemoveGlob(pattern string) error {
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
entries, err := idx.Glob(pattern)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, e := range entries {
|
|
file := filepath.FromSlash(e.Name)
|
|
if _, err := w.Filesystem.Lstat(file); err != nil && !os.IsNotExist(err) {
|
|
return err
|
|
}
|
|
|
|
if _, err := w.doRemoveFile(idx, file); err != nil {
|
|
return err
|
|
}
|
|
|
|
dir, _ := filepath.Split(file)
|
|
if err := w.removeEmptyDirectory(dir); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return w.r.Storer.SetIndex(idx)
|
|
}
|
|
|
|
// Move moves or rename a file in the worktree and the index, directories are
|
|
// not supported.
|
|
func (w *Worktree) Move(from, to string) (plumbing.Hash, error) {
|
|
// TODO(mcuadros): support directories and/or implement support for glob
|
|
if _, err := w.Filesystem.Lstat(from); err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
if _, err := w.Filesystem.Lstat(to); err == nil {
|
|
return plumbing.ZeroHash, ErrDestinationExists
|
|
}
|
|
|
|
idx, err := w.r.Storer.Index()
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
hash, err := w.deleteFromIndex(idx, from)
|
|
if err != nil {
|
|
return plumbing.ZeroHash, err
|
|
}
|
|
|
|
if err := w.Filesystem.Rename(from, to); err != nil {
|
|
return hash, err
|
|
}
|
|
|
|
if err := w.addOrUpdateFileToIndex(idx, to, hash); err != nil {
|
|
return hash, err
|
|
}
|
|
|
|
return hash, w.r.Storer.SetIndex(idx)
|
|
}
|