fix: git grep bare repositories

Perform grep on `*Repository` instead of `*Worktree`.

Fixes: https://github.com/go-git/go-git/issues/68

1 files changed, 13 insertions, 8 deletions

diff --git a/worktree.go b/worktree.go
index d28ba32..7d2f3b4 100644
--- a/worktree.go
+++ b/worktree.go
@@ -290,7 +290,7 @@ func (w *Worktree) ResetSparsely(opts *ResetOptions, dirs []string) error {
 		return nil
 	}
 
-	t, err := w.getTreeFromCommitHash(opts.Commit)
+	t, err := w.r.getTreeFromCommitHash(opts.Commit)
 	if err != nil {
 		return err
 	}
@@ -633,8 +633,8 @@ func (w *Worktree) addIndexFromFile(name string, h plumbing.Hash, idx *indexBuil
 	return nil
 }
 
-func (w *Worktree) getTreeFromCommitHash(commit plumbing.Hash) (*object.Tree, error) {
-	c, err := w.r.CommitObject(commit)
+func (r *Repository) getTreeFromCommitHash(commit plumbing.Hash) (*object.Tree, error) {
+	c, err := r.CommitObject(commit)
 	if err != nil {
 		return nil, err
 	}
@@ -802,9 +802,9 @@ func (gr GrepResult) String() string {
 	return fmt.Sprintf("%s:%s:%d:%s", gr.TreeName, gr.FileName, gr.LineNumber, gr.Content)
 }
 
-// Grep performs grep on a worktree.
-func (w *Worktree) Grep(opts *GrepOptions) ([]GrepResult, error) {
-	if err := opts.Validate(w); err != nil {
+// Grep performs grep on a repository.
+func (r *Repository) Grep(opts *GrepOptions) ([]GrepResult, error) {
+	if err := opts.validate(r); err != nil {
 		return nil, err
 	}
 
@@ -814,7 +814,7 @@ func (w *Worktree) Grep(opts *GrepOptions) ([]GrepResult, error) {
 	var treeName string
 
 	if opts.ReferenceName != "" {
-		ref, err := w.r.Reference(opts.ReferenceName, true)
+		ref, err := r.Reference(opts.ReferenceName, true)
 		if err != nil {
 			return nil, err
 		}
@@ -827,7 +827,7 @@ func (w *Worktree) Grep(opts *GrepOptions) ([]GrepResult, error) {
 
 	// Obtain a tree from the commit hash and get a tracked files iterator from
 	// the tree.
-	tree, err := w.getTreeFromCommitHash(commitHash)
+	tree, err := r.getTreeFromCommitHash(commitHash)
 	if err != nil {
 		return nil, err
 	}
@@ -836,6 +836,11 @@ func (w *Worktree) Grep(opts *GrepOptions) ([]GrepResult, error) {
 	return findMatchInFiles(fileiter, treeName, opts)
 }
 
+// Grep performs grep on a worktree.
+func (w *Worktree) Grep(opts *GrepOptions) ([]GrepResult, error) {
+	return w.r.Grep(opts)
+}
+
 // findMatchInFiles takes a FileIter, worktree name and GrepOptions, and
 // returns a slice of GrepResult containing the result of regex pattern matching
 // in content of all the files.