feat: allow to specify output dir; process dir recursively

utils/file.go

@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"os"
 	"path/filepath"
 	"strings"
 )
@@ -9,3 +10,39 @@ func ReplaceExtension(filepathStr, newExt string) string {
 	ext := filepath.Ext(filepathStr)
 	return strings.TrimSuffix(filepathStr, ext) + newExt
 }
+
+func PathExists(path string) bool {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true
+	}
+	if os.IsNotExist(err) {
+		return false
+	}
+	return false
+}
+
+func IsDir(path string) bool {
+	s, err := os.Stat(path)
+	if err != nil {
+
+		return false
+	}
+	return s.IsDir()
+}
+
+func GetRelativePath(from, to string) string {
+	rel, err := filepath.Rel(from, to)
+	if err != nil {
+		return ""
+	}
+	return rel
+}
+
+func IsRegularFile(path string) bool {
+	s, err := os.Stat(path)
+	if err != nil {
+		return false
+	}
+	return s.Mode().IsRegular()
+}