字符集之间转换实现函数

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//下面同一般编程。gSoap会把字符串当成utf8编码处理。//下面附带gb2312与utf8编码之间的转换函数：//gb2312转utf8 void Gb2312ToUtf8(char* pstrOut, u32 dwOutLen, const char* pstrIn, u32 dwInLen) { #ifdef WIN32     int i = MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, NULL, 0);     wchar_t * strSrc = new wchar_t[i+1];     MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, strSrc, i);         i = WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, NULL, 0, NULL, NULL);     if (i >= dwOutLen)     {         i = dwOutLen - 1;     }     WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, pstrOut, i, NULL, NULL);     delete strSrc; #else     iconv_t iConv = iconv_open("utf-8", "gb2312");     iconv(iConv, (char **)&pstrIn, (size_t *)&dwInLen, (char **)&pstrOut, (size_t *)&dwOutLen);     iconv_close(iConv); #endif } //utf8转gb2312 void Utf8ToGb2312(char* pstrOut, u32 dwOutLen, const char* pstrIn, u32 dwInLen) {     if (NULL == pstrOut)     {         return ;     } #ifdef WIN32     int i = MultiByteToWideChar(CP_UTF8, 0, pstrIn, -1, NULL, 0);     wchar_t * strSrc = new wchar_t[i+1];     MultiByteToWideChar(CP_UTF8, 0, pstrIn, -1, strSrc, i);         i = WideCharToMultiByte(CP_ACP, 0, strSrc, -1, NULL, 0, NULL, NULL);     if (i >= dwOutLen)     {         i = dwOutLen - 1;     }     WideCharToMultiByte(CP_ACP, 0, strSrc, -1, pstrOut, i, NULL, NULL);     delete strSrc; #else     iconv_t iConv = iconv_open("gb2312", "utf-8");     iconv(iConv, (char **)&pstrIn, (size_t *)&dwInLen, (char **)&pstrOut, (size_t *)&dwOutLen);     iconv_close(iConv); #endif }//gb2312转Unicode void Gb2312ToUnicode(wchar_t* pstrOut, u32 dwOutLen, const char* pstrIn, u32 dwInLen) {     if (NULL == pstrOut)     {         return ;     } #ifdef WIN32     u32 i = MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, NULL, 0);     if (i >= dwOutLen)     {         i = dwOutLen - 1;     }     MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, pstrOut, i); #else     iconv_t iConv = iconv_open("unicode", "gb2312");     iconv(iConv, (char**)pstrIn, &dwInLen, (char**)pstrOut, &dwOutLen);     iconv_close(iConv); #endif } //Unicode转Gb2312 void UnicodeToGb2312(char* pstrOut, u32 dwOutLen, const wchar_t* pstrIn, u32 dwInLen) {     if (NULL == pstrOut)     {         return ;     } #ifdef WIN32     u32 i = WideCharToMultiByte(CP_ACP, 0, pstrIn, -1, NULL, 0, NULL, NULL);     if (i >= dwOutLen)     {         i = dwOutLen - 1;     }     WideCharToMultiByte(CP_ACP, 0, pstrIn, -1, pstrOut, i, 0, 0); #else     iconv_t iConv = iconv_open("gb2312", "unicode");     iconv(iConv, (char**)pstrIn, &dwInLen, (char**)pstrOut, &dwOutLen);     iconv_close(iConv); #endif } //utf8转Unicode void Utf8ToUnicode(wchar_t* pstrOut, u32 dwOutLen, const char* pstrIn, u32 dwInLen) {     if (NULL == pstrOut)     {         return ;     } #ifdef WIN32     u32 i = MultiByteToWideChar(CP_UTF8, 0, pstrIn, -1, NULL, 0);     if (i >= dwOutLen)     {         i = dwOutLen - 1;     }     MultiByteToWideChar(CP_UTF8, 0, pstrIn, -1, pstrOut, i); #else     iconv_t iConv = iconv_open("unicode", "utf-8");     iconv(iConv, (char**)pstrIn, &dwInLen, (char**)pstrOut, &dwOutLen);     iconv_close(iConv); #endif }
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