1.使用c++的正则表达式替换对应内容
std::string sKey = it->first; std::string sPattern = "(<)(/)?(" + sKey + ")(>)"; std::regex rPattern(sPattern); std::string sReplace = "$1$2" + it->second + "$4"; sMsg = std::regex_replace(sMsg,rPattern,sReplace);sKey为要查找的关键词。sPattern为关键词加上正则格式后的字符串,"(<)(/)?(" + sKey + ")(>)",第一个()中表示有一个"<",第二个()后的?表示在<后是否存在?。整体意思为查"<heros1>","</heros1>"这样的字符串。 sReplace为匹配串模式 "$1$2" + it->second + "$4" 表示第1,2,4个单元串不会参与到替换。
2.找出所有的坐标点
std::smatch rPotRet; std::regex rPotPattern("[(]([0-9]+),([0-9]+)[)]"); const std::sregex_token_iterator end; for (std::sregex_token_iterator itPot(sMsg.begin(),sMsg.end(),rPotPattern); itPot != end; ++itPot) { std::string sPot = *itPot; if (std::regex_search(sPot,rPotRet,rPotPattern)) { CPoint pot; pot.x = atoi(rPotRet[1].str().c_str()); pot.y = atoi(rPotRet[2].str().c_str()); vecPot.push_back(pot); } }
"[(]([0-9]+),([0-9]+)[)]":[(]为必有一个(;[0-9]+表示有若干个0-9的数。整个意思就是查找 "(20,89)" ,“(1,22)”这样的字符串。
源代码
// regex1.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <regex> #include <iostream> #include <string> #include <vector> #include <map> #include "Windows.h" #include "Windef.h" #include "atltypes.h" typedef std::map<std::string,std::string> MapColorType; MapColorType GmapColor; void mapColorInit() { GmapColor.insert(MapColorType::value_type("heros1","12FFFGSEVF")); GmapColor.insert(MapColorType::value_type("heros2","22FDGRG7")); GmapColor.insert(MapColorType::value_type("location","24FDGRG7")); } std::string regexDeal(std::string sMsg,MapColorType mapColor,std::vector<CPoint>& vecPot) { std::string sRet; for (MapColorType::iterator it = mapColor.begin(); it != mapColor.end(); it++) { std::string sKey = it->first; std::string sPattern = "(<)(/)?(" + sKey + ")(>)"; std::regex rPattern(sPattern); std::string sReplace = "$1$2" + it->second + "$4"; sMsg = std::regex_replace(sMsg,sReplace); if (sKey == "location") { std::smatch rPotRet; std::regex rPotPattern("[(]([0-9]+),rPotPattern)) { CPoint pot; pot.x = atoi(rPotRet[1].str().c_str()); pot.y = atoi(rPotRet[2].str().c_str()); vecPot.push_back(pot); } } } } return sMsg; } int main() { mapColorInit(); std::vector<CPoint> vecPot; std::string text = "<heros1>sixi</heros1><location>(11,11)</location><location>(22,22)</location>"; std::string sRet = regexDeal(text,GmapColor,vecPot); std::cout <<"Input:" << text << std::endl; std::cout << "Out:"<<sRet << std::endl; for (std::vector<CPoint>::iterator it = vecPot.begin(); it != vecPot.end(); it++) { std::cout << it->x << std::endl; std::cout << it->y << std::endl; } return 0; }
运行效果
原文链接:https://www.f2er.com/regex/360041.html