first commit

scanner.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func findFiles(config Config) ([]string, error) {
+	var musicFiles []string
+
+	walkFunc := func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if info.IsDir() && path != config.SourceDir && !config.Recursion {
+			return filepath.SkipDir
+		}
+
+		ext := strings.ToLower(filepath.Ext(path))
+		if ext == ".mp3" || ext == ".m4a" || ext == ".flac" || ext == ".wav" {
+			musicFiles = append(musicFiles, path)
+		}
+
+		return nil
+	}
+
+	if err := filepath.Walk(config.SourceDir, walkFunc); err != nil {
+		return nil, err
+	}
+
+	return musicFiles, nil
+}