1 files changed, 18 insertions, 1 deletions

diff --git a/shell.go b/shell.go
index 8215d46..efb682d 100644
--- a/shell.go
+++ b/shell.go
@@ -79,12 +79,29 @@ func (repo *Repo) Exists(filename string) bool {
 }
 
 func (repo *Repo) IsValid() bool {
-	if !repo.IsDirectory() {
+	if repo == nil {
+		return false
+	}
+	if !repo.IsGitDirectory() {
 		return false
 	}
 	return true
 }
 
+func (repo *Repo) ReadFile(fname string) ([]byte, error) {
+	fullname := filepath.Join(repo.FullPath, fname)
+	return os.ReadFile(fullname)
+}
+
+func (repo *Repo) IsGitDirectory() bool {
+	gitdir := filepath.Join(repo.FullPath, ".git")
+	info, err := os.Stat(gitdir)
+	if err != nil {
+		return false
+	}
+	return info.IsDir()
+}
+
 func (repo *Repo) IsDirectory() bool {
 	info, err := os.Stat(repo.FullPath)
 	if err != nil {