no git submodules

vendor/github.com/ddliu/motto/utils.go

@@ -0,0 +1,60 @@
+// Copyright 2014 dong<ddliuhb@gmail.com>.
+// Licensed under the MIT license.
+//
+// Motto - Modular Javascript environment.
+package motto
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+)
+
+func isDir(path string) (bool, error) {
+	fi, err := os.Stat(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false, nil
+		}
+		return false, err
+	}
+
+	return fi.IsDir(), nil
+}
+
+func isFile(path string) (bool, error) {
+	fi, err := os.Stat(path)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false, nil
+		}
+		return false, err
+	}
+
+	return !fi.IsDir(), nil
+}
+
+type packageInfo struct {
+	Main string `json:"main"`
+}
+
+func parsePackageEntryPoint(path string) (string, error) {
+	bytes, err := ioutil.ReadFile(path)
+	if err != nil {
+		return "", err
+	}
+
+	var info packageInfo
+	err = json.Unmarshal(bytes, &info)
+	if err != nil {
+		return "", err
+	}
+
+	return info.Main, nil
+}
+
+// Throw a javascript error, see https://github.com/robertkrimen/otto/issues/17
+func jsException(vm *Motto, errorType, msg string) {
+	value, _ := vm.Call("new "+errorType, nil, msg)
+	panic(value)
+}