C++自定义脚本文件执行

news2024/9/24 19:14:25

FunctionCall.h：

   #include <sstream>
   #include <string>
   #include <vector>
   // 函数调用
   class FunctionCall
   {
   public:
       FunctionCall();
       ~FunctionCall();
       std::string call(const std::string &line);

private:
void parse(const std::string &line);

   private:
       void call0();
       void call1();
       void call2();
       void call3();
       void call4();
       void call5();
   private:
       std::string funcname;
       std::vector<std::string> args;
       std::string result;
   };

FunctionCall.cpp：
   #include "FunctionCall.h"
   #include <fstream>
   #include <iostream>
   #include <sstream>
   #include <vector>

FunctionCall::FunctionCall() {}
FunctionCall::~FunctionCall() {}

   void FunctionCall::parse(const std::string &line)
   {
       std::istringstream iss(line);
       std::string tmp;
       while (std::getline(iss, tmp, ',')) {
           if (funcname.empty())
               funcname = tmp;
           else
               args.emplace_back(tmp);
       }
   }

   // 执行外部脚本
   std::string FunctionCall::call(const std::string &line)
   {
       parse(line);
       if(funcname.empty())
           return "invalid function";

       switch (args.size()) {
       case 0: {
           call0();
       } break;
       case 1: {
           call1();
       } break;
       case 2: {
           call2();
       } break;
       case 3: {
           call3();
       } break;
       case 4: {
           call4();
       } break;
       case 5: {
           call5();
       } break;
       default: {
       } break;
       }
       return result;
   }

   void FunctionCall::call0()
   {
       if("test" == funcname)
           std::cout << "run test" << std::endl;
   }

void FunctionCall::call1() {
}

void FunctionCall::call2() {
}

void FunctionCall::call3() {
}

void FunctionCall::call4() {
}

void FunctionCall::call5() {
}

LocalScriptFile.h：

#include <string>

   class LocalScriptFile
   {
   public:
       bool doFile(const char *path);

   private:
       bool jumpComment(const std::string &line);
       void doScript(const std::string &line);

   private:
       bool m_isComment = false;
   };

LocalScriptFile.cpp:

#include "LocalScriptFile.h"

   #include "FunctionCall.h"
   #include <fstream>
   #include <iostream>
   #include <sstream>
   #include <vector>

   bool LocalScriptFile::jumpComment(const std::string &line) {
       if(m_isComment) {
           if (-1 != line.find("**/"))
               m_isComment = false;
           return true;
       } else{
           if (-1 != line.find("/**"))
               m_isComment = true;
           return m_isComment;
       }
   }

   bool LocalScriptFile::doFile(const char *path)
   {
       if (-1 != std::string(path).rfind(".lua")) {
           std::ifstream file(path);
           if (!file.is_open()) {
               std::cerr << "Failed to open the file." << std::endl;
               return false;
           }

           bool isComment = false;
           std::string line;
           while (std::getline(file, line)) {
               // std::cout << "Read line: " << line << std::endl;
               if(jumpComment(line))
                   continue;
               doScript(line);
           }
           file.close();
           return true;
       }
       return false;
   }

   // 执行外部脚本
   void LocalScriptFile::doScript(const std::string &line)
   {
       FunctionCall call;
       std::stringstream logStream;
       logStream << call.call(line) << " = " << line;
   }

test.lua
   /*
       测试脚本文件
   */
   test

使用示例：
   void main() {
       PxxLocalScriptFile scriptFile;
if(scriptFile.doFile("test.lua"))
           std::cout << "success" << std::endl;
   }