GBK与UTF8互转

#include <locale.h> //setlocale使用
#include <stdlib.h>//linux下mbsowcs(),wcstombs()使用
bool onvifBridge::Gbk2utf8(string &utfStr, string &srcStr)
{

    //首先先将gbk编码转换为unicode编码   
    if(NULL==setlocale(LC_ALL,"zh_CN.gbk"))//设置转换为unicode前的码,当前为gbk编码   
    {
        printf("Bad Parameter\n");
        return false;
    }

    int unicodeLen=mbstowcs(NULL,srcStr.c_str(),0);//计算转换后的长度   
    if(unicodeLen<=0)
    {
        printf("Can not Transfer!!!\n");
        return false;
    }
    wchar_t *unicodeStr=(wchar_t *)calloc(sizeof(wchar_t),unicodeLen+1);
    mbstowcs(unicodeStr,srcStr.c_str(),srcStr.size());//将gbk转换为unicode   

    //将unicode编码转换为utf8编码   
    if(NULL==setlocale(LC_ALL,"zh_CN.utf8"))//设置unicode转换后的码,当前为utf8   
    {
        printf("Bad Parameter\n");
        return false;
    }
    int utfLen=wcstombs(NULL,unicodeStr,0);//计算转换后的长度   
    if(utfLen<=0)
    {
        printf("Can not Transfer!!!\n");
        return false;
    }
    char utfbuf[utfLen];
    wcstombs(utfbuf,unicodeStr,utfLen);
    utfbuf[utfLen]=0;//添加结束符   
    free(unicodeStr);
    utfStr = utfbuf;
    return true;
}



bool onvifBridge:: Utf82gbk(std::string &gbkStr, std::string &srcStr)
{

    //首先先将utf-8编码转换为unicode编码   
    if(NULL==setlocale(LC_ALL,"zh_CN.utf8"))//设置转换为unicode前的码,当前为utf8编码   
    {
        printf("Bad Parameter\n");
        return false;
    }

    int unicodeLen=mbstowcs(NULL,srcStr.c_str(),0);//计算转换后的长度   
    if(unicodeLen<=0)
    {
        printf("Can not Transfer!!!\n");
        return false;
    }
    wchar_t *unicodeStr=(wchar_t *)calloc(sizeof(wchar_t),unicodeLen+1);
    mbstowcs(unicodeStr,srcStr.c_str(),srcStr.size());//将gbk转换为unicode   

    //将unicode编码转换为gbk编码   
    if(NULL==setlocale(LC_ALL,"zh_CN.gbk"))//设置unicode转换后的码,当前为gbk   
    {
        printf("Bad Parameter\n");
        return false;
    }
    int gbkLen=wcstombs(NULL,unicodeStr,0);//计算转换后的长度   
    if(gbkLen<=0)
    {
        printf("Can not Transfer!!!\n");
        return false;
    }
    char gbkbuf[gbkLen];
    wcstombs(gbkbuf,unicodeStr,gbkLen);
    gbkbuf[gbkLen]=0;//添加结束符   
    gbkStr = gbkbuf;
    free(unicodeStr);
    return true;
}

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转载自blog.csdn.net/qq_36184671/article/details/81980467