出处:http://www.cnblogs.com/lzjsky/archive/2011/01/23/1942508.html
1. 查找字符
1 std::wstring strData = L"<result>[北京市, 上海市, 深圳市]</result>" 2 3 void DoF(const std::wstring &strData, std::list<std::wstring>& listDo) 4 5 { 6 7 std::wstring strTarB = L"<result>["; 8 9 std::wstring strTarE = L"]</result>"; 10 11 12 13 std::wstring::size_type nBeginTempB = 0, nEndTempB = 0, nBeginTempE = 0, nEndTempE = 0; 14 15 16 17 nEndTempB = strData.find(strTarB, nBeginTempB); 18 19 nEndTempE = strData.find(strTarE, nBeginTempE); 20 21 22 23 if(nEndTempB != std::wstring::npos && nEndTempE != std::wstring::npos && nEndTempE > nEndTempB + strTarB.length()) 24 25 { 26 27 std::wstring strTemp = strData.substr(nEndTempB + strTarB.length(), nEndTempE - nEndTempB - strTarB.length()); 28 29 std::wstring strSub; 30 31 strTemp += L","; 32 33 34 35 std::list<std::wstring>::iterator it; 36 37 listDo.clear(); 38 39 std::wstring::size_type nBegin = 0, nEnd = 0; 40 41 while( (nEnd = strTemp.find(L",", nBegin)) != std::wstring::npos) 42 43 { 44 45 strSub = strTemp.substr(nBegin, nEnd - nBegin); 46 47 if(strSub.length() > 0) 48 49 { 50 51 listDo.push_back(strSub); 52 53 } 54 55 nBegin = nEnd + 1; 56 57 } 58 59 } 60 61 }
2. 替换字符串
stl 中的string只是提供了按照位置和区间的replace函数，而不能用一个string字串来替换指定string中的另一个字串.
1 void string_replace(std::string& strBig, const std::string & strsrc, const std::string &strdst) 2 3 { 4 5 std::string::size_type pos = 0; 6 7 while( (pos = strBig.find(strsrc, pos)) != string::npos) 8 9 { 10 11 strBig.replace(pos, strsrc.length(), strdst); 12 13 pos += strdst.length(); 14 15 } 16 17 } 18 19 // 使用 20 21 std::string strinfo= "This is Winter, Winter is a programmer. Do you know Winter?"; 22 23 // 把strinfo中的所有"Winter" 替换为"wende" 24 25 string_replace(strinfo, "Winter", "wende");