使用iconv进行文件编码转换

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iconv.h>
int main( int argc, char *argv[] )
{
iconv_t cd;
size_t n, inlen, outlen;
char buf[1024];
char *in, *out;
unsigned char gb[]={0xd6,0xd0,0x00};

cd = iconv_open("UTF-8", "GB2312");
if (cd == (iconv_t)-1)
{
perror("iconv_open");
exit(-1);
}

in = gb;
out = buf;
inlen = strlen(in);
outlen = sizeof(buf);
printf("in[ %s ]\n",in);
printf("inlen [ %ld ]\n", inlen);

n = iconv(cd, &in, &inlen, &out, &outlen);
if (n == -1)
{
perror("iconv");
exit(-1);
}

buf[ sizeof(buf)-outlen ] = 0;

printf("out [ %s ]\n", buf);
printf("outlen [ %ld ]\n", sizeof(buf)-outlen);

iconv_close(cd);

return 0;
}