worktree: expose underlying filesystem

repository.go

@@ -844,7 +844,7 @@ func (r *Repository) Worktree() (*Worktree, error) {
 		return nil, ErrIsBareRepository
 	}
 
-	return &Worktree{r: r, fs: r.wt}, nil
+	return &Worktree{r: r, Filesystem: r.wt}, nil
 }
 
 // ResolveRevision resolves revision to corresponding hash.

repository_test.go

@@ -1138,7 +1138,7 @@ func (s *RepositorySuite) TestWorktree(c *C) {
 	r, _ := Init(memory.NewStorage(), def)
 	w, err := r.Worktree()
 	c.Assert(err, IsNil)
-	c.Assert(w.fs, Equals, def)
+	c.Assert(w.Filesystem, Equals, def)
 }
 
 func (s *RepositorySuite) TestWorktreeBare(c *C) {

submodule.go

@@ -115,7 +115,7 @@ func (s *Submodule) Repository() (*Repository, error) {
 	}
 
 	var worktree billy.Filesystem
-	if worktree, err = s.w.fs.Chroot(s.c.Path); err != nil {
+	if worktree, err = s.w.Filesystem.Chroot(s.c.Path); err != nil {
 		return nil, err
 	}
 

submodule_test.go

@@ -128,7 +128,7 @@ func (s *SubmoduleSuite) TestUpdateWithRecursion(c *C) {
 
 	c.Assert(err, IsNil)
 
-	fs := s.Worktree.fs
+	fs := s.Worktree.Filesystem
 	_, err = fs.Stat(fs.Join("itself", "basic", "LICENSE"))
 	c.Assert(err, IsNil)
 }

worktree.go

@@ -29,8 +29,10 @@ var (
 
 // Worktree represents a git worktree.
 type Worktree struct {
-	r  *Repository
-	fs billy.Filesystem
+	// Filesystem underlying filesystem.
+	Filesystem billy.Filesystem
+
+	r *Repository
 }
 
 // Pull incorporates changes from a remote repository into the current branch.
@@ -355,13 +357,13 @@ func (w *Worktree) checkoutChangeSubmodule(name string,
 			return err
 		}
 
-		if err := w.fs.MkdirAll(name, mode); err != nil {
+		if err := w.Filesystem.MkdirAll(name, mode); err != nil {
 			return err
 		}
 
 		return w.addIndexFromTreeEntry(name, e, idx)
 	case merkletrie.Delete:
-		if err := rmFileAndDirIfEmpty(w.fs, name); err != nil {
+		if err := rmFileAndDirIfEmpty(w.Filesystem, name); err != nil {
 			return err
 		}
 
@@ -385,7 +387,7 @@ func (w *Worktree) checkoutChangeRegularFile(name string,
 
 		// to apply perm changes the file is deleted, billy doesn't implement
 		// chmod
-		if err := w.fs.Remove(name); err != nil {
+		if err := w.Filesystem.Remove(name); err != nil {
 			return err
 		}
 
@@ -402,7 +404,7 @@ func (w *Worktree) checkoutChangeRegularFile(name string,
 
 		return w.addIndexFromFile(name, e.Hash, idx)
 	case merkletrie.Delete:
-		if err := rmFileAndDirIfEmpty(w.fs, name); err != nil {
+		if err := rmFileAndDirIfEmpty(w.Filesystem, name); err != nil {
 			return err
 		}
 
@@ -429,7 +431,7 @@ func (w *Worktree) checkoutFile(f *object.File) (err error) {
 
 	defer ioutil.CheckClose(from, &err)
 
-	to, err := w.fs.OpenFile(f.Name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, mode.Perm())
+	to, err := w.Filesystem.OpenFile(f.Name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, mode.Perm())
 	if err != nil {
 		return
 	}
@@ -453,7 +455,7 @@ func (w *Worktree) checkoutFileSymlink(f *object.File) (err error) {
 		return
 	}
 
-	err = w.fs.Symlink(string(bytes), f.Name)
+	err = w.Filesystem.Symlink(string(bytes), f.Name)
 	return
 }
 
@@ -468,7 +470,7 @@ func (w *Worktree) addIndexFromTreeEntry(name string, f *object.TreeEntry, idx *
 }
 
 func (w *Worktree) addIndexFromFile(name string, h plumbing.Hash, idx *index.Index) error {
-	fi, err := w.fs.Lstat(name)
+	fi, err := w.Filesystem.Lstat(name)
 	if err != nil {
 		return err
 	}
@@ -577,7 +579,7 @@ func (w *Worktree) newSubmodule(fromModules, fromConfig *config.Submodule) *Subm
 }
 
 func (w *Worktree) readGitmodulesFile() (*config.Modules, error) {
-	f, err := w.fs.Open(gitmodulesFile)
+	f, err := w.Filesystem.Open(gitmodulesFile)
 	if err != nil {
 		if os.IsNotExist(err) {
 			return nil, nil

worktree_commit.go

@@ -32,7 +32,7 @@ func (w *Worktree) Commit(msg string, opts *CommitOptions) (plumbing.Hash, error
 	}
 
 	h := &buildTreeHelper{
-		fs: w.fs,
+		fs: w.Filesystem,
 		s:  w.r.Storer,
 	}
 

worktree_commit_test.go

@@ -54,8 +54,8 @@ func (s *WorktreeSuite) TestCommitParent(c *C) {
 
 	fs := memfs.New()
 	w := &Worktree{
-		r:  s.Repository,
-		fs: fs,
+		r:          s.Repository,
+		Filesystem: fs,
 	}
 
 	err := w.Checkout(&CheckoutOptions{})
@@ -78,8 +78,8 @@ func (s *WorktreeSuite) TestCommitAll(c *C) {
 
 	fs := memfs.New()
 	w := &Worktree{
-		r:  s.Repository,
-		fs: fs,
+		r:          s.Repository,
+		Filesystem: fs,
 	}
 
 	err := w.Checkout(&CheckoutOptions{})

worktree_status.go

@@ -116,7 +116,7 @@ func (w *Worktree) diffStagingWithWorktree() (merkletrie.Changes, error) {
 		return nil, err
 	}
 
-	to := filesystem.NewRootNode(w.fs, submodules)
+	to := filesystem.NewRootNode(w.Filesystem, submodules)
 	res, err := merkletrie.DiffTree(from, to, diffTreeIsEquals)
 	if err == nil {
 		res = w.excludeIgnoredChanges(res)
@@ -125,7 +125,7 @@ func (w *Worktree) diffStagingWithWorktree() (merkletrie.Changes, error) {
 }
 
 func (w *Worktree) excludeIgnoredChanges(changes merkletrie.Changes) merkletrie.Changes {
-	patterns, err := gitignore.ReadPatterns(w.fs, nil)
+	patterns, err := gitignore.ReadPatterns(w.Filesystem, nil)
 	if err != nil || len(patterns) == 0 {
 		return changes
 	}
@@ -251,7 +251,7 @@ func (w *Worktree) Add(path string) (plumbing.Hash, error) {
 }
 
 func (w *Worktree) copyFileToStorage(path string) (hash plumbing.Hash, err error) {
-	fi, err := w.fs.Lstat(path)
+	fi, err := w.Filesystem.Lstat(path)
 	if err != nil {
 		return plumbing.ZeroHash, err
 	}
@@ -281,7 +281,7 @@ func (w *Worktree) copyFileToStorage(path string) (hash plumbing.Hash, err error
 }
 
 func (w *Worktree) fillEncodedObjectFromFile(dst io.Writer, path string, fi os.FileInfo) (err error) {
-	src, err := w.fs.Open(path)
+	src, err := w.Filesystem.Open(path)
 	if err != nil {
 		return err
 	}
@@ -296,7 +296,7 @@ func (w *Worktree) fillEncodedObjectFromFile(dst io.Writer, path string, fi os.F
 }
 
 func (w *Worktree) fillEncodedObjectFromSymlink(dst io.Writer, path string, fi os.FileInfo) error {
-	target, err := w.fs.Readlink(path)
+	target, err := w.Filesystem.Readlink(path)
 	if err != nil {
 		return err
 	}
@@ -337,7 +337,7 @@ func (w *Worktree) doAddFileToIndex(idx *index.Index, filename string, h plumbin
 }
 
 func (w *Worktree) doUpdateFileToIndex(e *index.Entry, filename string, h plumbing.Hash) error {
-	info, err := w.fs.Lstat(filename)
+	info, err := w.Filesystem.Lstat(filename)
 	if err != nil {
 		return err
 	}
@@ -382,7 +382,7 @@ func (w *Worktree) deleteFromIndex(path string) (plumbing.Hash, error) {
 }
 
 func (w *Worktree) deleteFromFilesystem(path string) error {
-	err := w.fs.Remove(path)
+	err := w.Filesystem.Remove(path)
 	if os.IsNotExist(err) {
 		return nil
 	}
@@ -393,11 +393,11 @@ func (w *Worktree) deleteFromFilesystem(path string) error {
 // 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) {
-	if _, err := w.fs.Lstat(from); err != nil {
+	if _, err := w.Filesystem.Lstat(from); err != nil {
 		return plumbing.ZeroHash, err
 	}
 
-	if _, err := w.fs.Lstat(to); err == nil {
+	if _, err := w.Filesystem.Lstat(to); err == nil {
 		return plumbing.ZeroHash, ErrDestinationExists
 	}
 
@@ -406,7 +406,7 @@ func (w *Worktree) Move(from, to string) (plumbing.Hash, error) {
 		return plumbing.ZeroHash, err
 	}
 
-	if err := w.fs.Rename(from, to); err != nil {
+	if err := w.Filesystem.Rename(from, to); err != nil {
 		return hash, err
 	}