linux C++ Utf8toGb2312 Gb2312toUtf8 MyA2W和MyW2A实现

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CHealper.h

#ifndef __CHELPER_H__#define __CHELPER_H__#include <string>int Utf8toGb2312(const char *sourcebuf, size_t sourcelen, char *destbuf, size_t* destlen);int Gb2312toUtf8(const char *sourcebuf, size_t sourcelen, char *destbuf, size_t* destlen);std::wstring MyA2W(std::string buf);std::string MyW2A(std::wstring buf);#endif

CHealper.cpp

#include <stdio.h>#include <iconv.h>#include <string.h>#include <stdlib.h>#include "CHelper.h"using namespace std;int Utf8toGb2312(const char *sourcebuf, size_t sourcelen, char *destbuf, size_t* destlen) {iconv_t cd;if ((cd = iconv_open("gb2312", "utf-8")) == 0)return -1;memset(destbuf, 0, *destlen);char **source = (char**)&sourcebuf;char **dest = &destbuf;if (-1 == iconv(cd, source, &sourcelen, dest, destlen))return -1;iconv_close(cd);return 0;}int Gb2312toUtf8(const char *sourcebuf, size_t sourcelen, char *destbuf, size_t* destlen) {iconv_t cd;if ((cd = iconv_open("utf-8", "gb2312")) == 0)return -1;memset(destbuf, 0, *destlen);char **source = (char**)&sourcebuf;char **dest = &destbuf;if (-1 == iconv(cd, source, &sourcelen, dest, destlen))return -1;iconv_close(cd);return 0;}/************************************************************************//*   string to wstring                                                  *//************************************************************************/std::wstring MyA2W(std::string strBuf) {std::wstring strValue = L"";if (strBuf.length() <= 0)return strValue;setlocale(LC_CTYPE, "zh_CN.utf8");size_t nDestLen = mbstowcs(nullptr, strBuf.c_str(), 0) + 1;if (nDestLen == size_t(-1) )return strValue;wchar_t* pBuf = nullptr;pBuf = new wchar_t[nDestLen];if (!pBuf)return strValue;mbstowcs(pBuf, strBuf.c_str(), nDestLen);strValue = pBuf;if (pBuf)delete [] pBuf, pBuf = nullptr;return strValue;}/************************************************************************//*  wstring to string                                                 *//************************************************************************/std::string MyW2A(std::wstring strBuf) {std::string strValue = "";if (strBuf.length() <= 0)return strValue;size_t nSize = strBuf.length() * sizeof(strBuf[0]);char* pBuf = nullptr;pBuf = new char[nSize];if (!pBuf)return strValue;size_t nDestLen = wcstombs(pBuf, strBuf.c_str(), nSize);if (nDestLen == size_t(0))return strValue;strValue = pBuf;if (pBuf)delete[] pBuf, pBuf = nullptr;return strValue;}

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