protoc-gen-lua 生成的lua文件提示错误: main function has more

main function has more than 200 local variables

意思就是说，这个lua 脚本中的 local 变量超过了 200个，不知是不是lua的限定还是 Protobuf 的限定。总之很奇妙。

到StackOverFlow上面搜索到相关的问题，很多朋友表示把 local 变量装在Table中可以很完美的解决这个问题，尝试了一下确实OK的运行起来的。

于是写了一个小工具，把当前目录下的所有的 Protobuf – lua 文件里面的local 变量都状在 Table 里面。
代码如下：

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.IO;
    using System.Text.RegularExpressions;
     
    namespace CMGE
    {
        class Program
        {
            static string ReplaceWholeWord(string original,string wordToFind,string replacement,RegexOptions regexOptions = RegexOptions.None)
            {
                string pattern = String.Format(@"b{0}b",wordToFind);
                string ret = Regex.Replace(original,pattern,replacement,regexOptions);
                return ret;
            }
     
            static void GeneratorTable(string path)
            {
                path=path.Replace("","/");
                string filename = path.Substring(path.LastIndexOf('/')+1,path.Length - path.LastIndexOf('/')-1);
                filename = filename.Substring(0,filename.LastIndexOf('.'));
                string tablename = filename + "Table";
     
                //创建新目录;
                string dirpath = path.Substring(0,path.LastIndexOf('/')) + "/newlua";
                DirectoryInfo dirinfo = new DirectoryInfo(dirpath);
                if (!dirinfo.Exists)
                {
                    dirinfo.Create();
                }
     
                string newfilename = filename + ".lua";
                string newfilepath = dirpath + "/" + newfilename;
     
                List<string> linelist = new List<string>();
                List<string> msgNameList = new List<string>();
     
                StreamReader reader = new StreamReader(path);
                while (!reader.EndOfStream)
                {
                    string line = reader.ReadLine();
                    linelist.Add(line);
                }
     
                //判断第一行;
                if (linelist[0] != "-- Generated By protoc-gen-lua Do not Edit")
                {
                    return;
                }
     
                //修改第一行  添加local表;
                linelist[0] = linelist[0] + "nnlocal " + tablename + " = {}nn";
     
                //寻找"protobuf.Message"
                for (int index = 0; index < linelist.Count; index++)
                {
                    string line = linelist[index];
     
                    if (line.StartsWith("local ") && (
                        line.EndsWith(" = protobuf.Descriptor();") ||
                        line.EndsWith(" = protobuf.FieldDescriptor();") ||
                        line.EndsWith("protobuf.EnumDescriptor();") ||
                        line.EndsWith(" = protobuf.EnumValueDescriptor();")))
                    {
                        //找到这一行中 括号中的值;
                        string begintag = "local ";
                        string endtag = " = protobuf.";
                        int begintagindex = line.IndexOf(begintag);
     
                        //后半段;
                        string part2 = line.Substring(begintagindex + begintag.Length);
                        int endtagindex = part2.IndexOf(endtag);
     
                        //获取到需要的;
                        string messageName = part2.Substring(0,endtagindex);
                        msgNameList.Add(messageName);
                    }
                }
     
                //寻找 protobuf.Descriptor();
                for (int index = 0; index < linelist.Count; index++)
                {
                    string line = linelist[index];
                    if (line.StartsWith("local ") && (
                        line.EndsWith(" = protobuf.Descriptor();") ||
                        line.EndsWith(" = protobuf.FieldDescriptor();") ||
                        line.EndsWith(" = protobuf.EnumDescriptor();") ||
                        line.EndsWith(" = protobuf.EnumValueDescriptor();")))
                    {
                        linelist[index] = line.Replace("local ","");
                    }
                }
     
                //全局替换;
                for (int index = 0; index < linelist.Count; index++)
                {
                    for (int msgNameindex = 0; msgNameindex < msgNameList.Count; msgNameindex++)
                    {
                        string msgname = msgNameList[msgNameindex];
                        if (linelist[index].Contains(msgname))
                        {
                            //不是完整单词不能替换
                            linelist[index] = ReplaceWholeWord(linelist[index],msgname,tablename + "." + msgname);
                        }
                    }
                }
                //存储;
                StreamWriter writer = new StreamWriter(newfilepath);
                for (int index = 0; index < linelist.Count; index++)
                {
                    writer.WriteLine(linelist[index]);
                }
                writer.Flush();
            }
     
            static void Main(string[] args)
            {
                DirectoryInfo info = new DirectoryInfo("./");
                FileInfo[] filelist = info.GetFiles("*.lua");
                for (int index = 0; index < filelist.Length; index++)
                {
                    GeneratorTable(filelist[index].FullName);
                }
            }
        }
    }

http://pan.baidu.com/s/1ntmy01V