我在C ++中有以下代码,它应该逐行读取文件并匹配正则表达式以获取我正在寻找的信息。正则表达式由this link给出,但程序没有找到它。这是该计划:
#include <boost/regex.hpp>
#include <iostream>
#include <fstream>
int main()
{
boost::regex expr1("Property\(C\):\sIP\s\=(.*)\n");
boost::smatch what1;
std::string line;
std::ifstream myfile("document.txt");
if(myfile.is_open()){
std::cout <<"FILE OPEN " <<std::endl;
while(getline(myfile, line))
{
std::cout <<" LINE : " << line <<std::endl;
if (boost::regex_search(line, what1, expr1))
{
std::cout<<"MATCH FOUND " <<std::endl;
for(int i(0); i<what1.size(); i++)
std::cout << "WHAT " <<i<<" "<<what1[i] <<std::endl;
}
}
}
}
该文件应包含以下数据:
Property(C): IP = 127.0.0.1
Property(C): PORT = 9999
Property(C): CURRENTDIRECTORY = C:\Users\logpoint\Downloads\Compressed\command_lines_and_setups_source\Setup\Debug
Property(C): CLIENTUILEVEL = 0
Property(C): CLIENTPROCESSID = 28184
Property(C): VersionDatabase = 200
我的代码有什么问题吗?
答案 0 :(得分:0)
根据Casimir et Hippolyte的建议,在我的正则表达式中添加两个反斜杠。即我的正则表达式是:
"Property\\(C\\):\\sIP\\s=(.*)"