Implement CommitService.ListFiles

- implement helper.IsValidRef. Use that in commit.ListFiles

1 files changed, 16 insertions, 0 deletions

diff --git a/internal/helper/repo.go b/internal/helper/repo.go
index 5d9ecf8ec..de8b2a846 100644
--- a/internal/helper/repo.go
+++ b/internal/helper/repo.go
@@ -71,3 +71,19 @@ func IsGitDirectory(dir string) bool {
 
 	return true
 }
+
+// IsValidRef checks if a ref in a repo is valid
+func IsValidRef(path, ref string) bool {
+	if path == "" || ref == "" {
+		return false
+	}
+
+	cmd, err := GitCommandReader("--git-dir", path, "log", "-1", ref)
+	if err != nil {
+		return false
+	}
+	defer cmd.Kill()
+	cmd.Stdout, cmd.Stderr, cmd.Stdin = nil, nil, nil
+
+	return cmd.Wait() == nil
+}