refactor arg parsing into own package; don't use flags

internal/argparser/argparser.go

@@ -0,0 +1,31 @@
+package argparser
+
+import "errors"
+
+func Parse(args []string) (err error, commit_type string, commit_scope string, shouldCommit bool, shouldStage bool, commit_message []string) {
+	argparseloop:
+	for i := 0; i < len(args); i++ {
+		switch args[i] {
+			case "-c", "--commit", "-commit":
+				shouldCommit = true
+			case "-a", "--add", "-add":
+				shouldStage = true
+			case "--":
+				commit_message = args[i+1:]
+				break argparseloop
+			default:
+				if commit_type == "" {
+					commit_type = args[i]
+					continue argparseloop
+				}
+				if commit_scope == "" {
+					commit_scope = args[i]
+					continue argparseloop
+				}
+				err = errors.New("unknown argument")
+				return
+		}
+	}
+	return
+}
+