Unity自动添加命名空间

using System.IO;
using UnityEngine;

public class ScriptChange : UnityEditor.AssetModificationProcessor
{
    static string namespaceName = "XC";

    /// <summary>
    /// 将要创建资源时会调用这个函数
    /// </summary>
    static void OnWillCreateAsset(string path)
    {
        //导入资源的路径，不知道具体是什么的时候建议输出查看
        Debug.Log(path);
        string str = path.Replace(".meta", "");
        string[] splitArgs = str.Split('.');
        if (splitArgs[splitArgs.Length - 1].Equals("cs"))
        {
            //Debug.Log("导入的是脚本");
            string[] newSplitArgs = str.Split('/');
            bool isEditor = false;
            foreach (var item in newSplitArgs)
            {
                if (item.Equals("Editor"))
                {
                    isEditor = true;
                    break; ;
                }
            }
            if (isEditor) return;
            ParseAndChangeScript(str.Substring(6, str.Length - 6));
        }
    }

  

    private static void ParseAndChangeScript(string path)
    {
        string str = File.ReadAllText(Application.dataPath + path);
        if (string.IsNullOrEmpty(str))
        {
            Debug.Log("读取出错了，Application.dataPath=" + Application.dataPath + "  path=" + path);
            return;
        }

        string newStr = "";
        //增加命名空间
        if (!str.Contains("namespace"))
        {
            if (!string.IsNullOrEmpty(namespaceName))
            {
                int length = str.IndexOf("public");
                newStr += str.Substring(0, length);
                string extraStr = "";
                string[] extraStrs = str.Substring(length, str.Length - length).Replace("\r\n", "\n").Split('\n');
                foreach (var item in extraStrs)
                {
                    extraStr += "\t" + item + "\r\n";
                }


                newStr += "\r\nnamespace " + namespaceName + "\r\n{\r\n" + extraStr + "}";
                //newStr = newStr.Replace("\n", "\r\n");
                //newStr = newStr.Replace('\r', ' ');
            }
            else
            {
                newStr = str;
            }
            File.WriteAllText(Application.dataPath + path, newStr);
        }
    }
}