1.使用c++的正则表达式替换对应内容
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。
- 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);
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