linux下字符集编码转换(c++)

最新推荐文章于 2023-11-29 19:00:10 发布

原创最新推荐文章于 2023-11-29 19:00:10 发布 · 1.1k 阅读

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CC 4.0 BY-SA版权

本文提供了一段C++代码，用于实现从GB2312编码到UTF-8编码的转换。通过使用iconv库，代码定义了一个通用的编码转换函数，并特化了GB2312到UTF-8的转换过程。

#include <iconv.h>
#include <iostream>

using namespace std;

int code_convert(char *from_charset, char *to_charset, char *inbuf,int inlen,
				char *outbuf,int outlen)
{
    iconv_t cd;

    char **pin = &inbuf;
    char **pout = &outbuf;

    cd = iconv_open(to_charset,from_charset);
    if (cd == 0)
    {
        return -1;
    }
    memset(outbuf,0,outlen);
    std::size_t inlen_t = (std::size_t)inlen;
    std::size_t outlen_t = (std::size_t)outlen;
    if (iconv(cd,pin,&inlen_t,pout,&outlen_t) == -1)
    {
        return -1;
    }

    iconv_close(cd);

    return 0;
}


int gb2312ToUtf8(char *inbuf,int inlen,char *outbuf,int outlen)
{
    return code_convert("gb2312","utf-8",inbuf,inlen,outbuf,outlen);
}

string gb2312ToUtf8(char *inbuf)
{
    if (NULL == inbuf)
    {
        return string("");
    }

    char errmsg[256] = { 0 };
    gb2312ToUtf8(inbuf,strlen(inbuf),errmsg,256);

    return string(errmsg);
}



int main(int argc, char *argv[])
{
    char *str = "中文";
    string s = gb2312ToUtf8(str);
    cout << "s: " << s << endl;

    return 0;
}