supports multiple language comment(only oneliner)

lang.go

@@ -12,6 +12,7 @@ var LangList []*Lang
 func init() {
 	LangList = []*Lang{
 		LangRuby,
+		LangJs,
 	}
 }
 

lang_rb.go

@@ -1,6 +1,7 @@
 package main
 
 var LangRuby = &Lang{
-	Name: "ruby",
-	Ext:  ".rb",
+	Name:           "Ruby",
+	Ext:            ".rb",
+	OneLineComment: "#",
 }

parser.go

@@ -29,23 +29,27 @@ func WalkFn(path string, info os.FileInfo, err error) error {
 	} else if info.IsDir() {
 		// do nothing
 	} else {
-		ParseIssues(path string, info os.FileInfo)
+		err := ParseIssues(path, info)
+		if err != nil {
+			return err
+		}
 	}
 	return nil
 }
 
-func ParseIssues() {
+func ParseIssues(path string, info os.FileInfo) error {
 	// do the file parse here
 	lang := DetectLangFromExt(filepath.Ext(path))
 	if lang != nil {
 		body, err := ioutil.ReadFile(path)
 		if err != nil {
 			return err
 		}
-		re, _ := regexp.Compile(`# \[TODO\].*`)
+		re, _ := regexp.Compile(lang.OneLineComment + ` \[TODO\].*`)
 		one := re.Find(body)
 		if one != nil {
 			fmt.Printf("Find a TODO: %s \n    at %s\n", one, path)
 		}
 	}
+	return nil
 }