#include <iconv.h>
#include <errno.h>

main()
{
char *in_utf8 = "";
char *in_gb2312 = "";
char out[OUTLEN];
int ret;

///utf8码转为gb2312码
ret = u2g(in_utf8,strlen(in_utf8),out,OUTLEN);
printf("utf8-->gb2312 out=%s",out);

///gb2312码转为utf8码
ret = g2u(in_gb2312,strlen(in_gb2312),out,strlen(in_gb2312)*4);
printf("gb2312-->utf8 out=%s",out);
}

int Convert(char *from_charset,char *to_charset,char *inbuf,size_t inlen,char *outbuf,size_t outlen)
{
iconv_t cd;
int rc;
char **pin = &inbuf;
char **pout = &outbuf;

cd = iconv_open(to_charset,from_charset);
if (cd==0) 
return -1;
memset(outbuf,0,outlen);
if (iconv(cd,pin,&inlen,pout,&outlen)==-1) 
{
	return -1;
}
iconv_close(cd);
return 0;
}
/*utf8码转为GB2312码*/
int Utf8ToGbk(char *inbuf,size_t inlen,char *outbuf,size_t outlen)
{
return code_convert("utf-8","gb2312",inbuf,inlen,outbuf,outlen);
}
/*GB2312码转为utf8码*/
int GbkToUtf8(char *inbuf,size_t inlen,char *outbuf,size_t outlen)
{
return code_convert("gb2312","utf-8",inbuf,inlen,outbuf,outlen);
}