From 83c51db90303c8ffae9ccc3754d7dd0b25f9751b Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Wed, 20 Jun 2018 22:53:53 +0200
Subject: [PATCH] fs: Add helper functions ReadDir/ReadDirNames

---
 internal/fs/fs_helpers.go | 45 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 internal/fs/fs_helpers.go

diff --git a/internal/fs/fs_helpers.go b/internal/fs/fs_helpers.go
new file mode 100644
index 000000000..6b269f763
--- /dev/null
+++ b/internal/fs/fs_helpers.go
@@ -0,0 +1,45 @@
+package fs
+
+import "os"
+
+// ReadDir reads the directory named by dirname within fs and returns a list of
+// directory entries.
+func ReadDir(fs FS, dirname string) ([]os.FileInfo, error) {
+	f, err := fs.Open(dirname)
+	if err != nil {
+		return nil, err
+	}
+
+	entries, err := f.Readdir(-1)
+	if err != nil {
+		return nil, err
+	}
+
+	err = f.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	return entries, nil
+}
+
+// ReadDirNames reads the directory named by dirname within fs and returns a
+// list of entry names.
+func ReadDirNames(fs FS, dirname string) ([]string, error) {
+	f, err := fs.Open(dirname)
+	if err != nil {
+		return nil, err
+	}
+
+	entries, err := f.Readdirnames(-1)
+	if err != nil {
+		return nil, err
+	}
+
+	err = f.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	return entries, nil
+}