GBK到UTF8编码转换C++实现

#include <iostream> #include <string> #include <fstream> #include <windows.h> using namespace std; string GBKToUTF8(const std::string& strGBK) { string strOutUTF8 = ""; WCHAR * str1; int n = MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, NULL, 0); str1 = new WCHAR[n]; MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, str1, n); n = WideCharToMultiByte(CP_UTF8, 0, str1, -1, NULL, 0, NULL, NULL); char * str2 = new char[n]; WideCharToMultiByte(CP_UTF8, 0, str1, -1, str2, n, NULL, NULL); strOutUTF8 = str2; delete[]str1; str1 = NULL; delete[]str2; str2 = NULL; return strOutUTF8; } string UTF8ToGBK(const std::string& strUTF8) { int len = MultiByteToWideChar(CP_UTF8, 0, strUTF8.c_str(), -1, NULL, 0); unsigned short * wszGBK = new unsigned short[len + 1]; memset(wszGBK, 0, len * 2 + 2); MultiByteToWideChar(CP_UTF8, 0, (LPCTSTR)strUTF8.c_str(), -1, wszGBK, len); len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL); char *szGBK = new char[len + 1]; memset(szGBK, 0, len + 1); WideCharToMultiByte(CP_ACP,0, wszGBK, -1, szGBK, len, NULL, NULL); //strUTF8 = szGBK; std::string strTemp(szGBK); delete[]szGBK; delete[]wszGBK; return strTemp; } int _tmain(int argc, _TCHAR* argv[]) { string test("我们中国是个强大的名族，强大的动力来自每个人的支持"); fstream output("test.txt",ios_base::out | ios_base::app); output << GBKToUTF8(test); //system("iconv -f GBK -t utf-8"); return 0; }