linux c字符集转换

#include <iconv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
    iconv_t cd = iconv_open("UTF-32LE", "UTF-8"); // 将UTF-8转换为UTF-32LE
    if (cd == (iconv_t)-1) {
        perror("iconv_open");
        return 1;
    }

    char *inbuf = "Hello, 世界!";
    size_t inbytesleft = strlen(inbuf);
    size_t outbytesleft = inbytesleft * 4; // 预留足够的空间，因为UTF-32每个字符至少4字节
    char *outbuf = malloc(outbytesleft);
    char *outptr = outbuf;

    if (iconv(cd, &inbuf, &inbytesleft, &outptr, &outbytesleft) == (size_t)-1) {
        perror("iconv");
        free(outbuf);
        iconv_close(cd);
        return 1;
    }

    *outptr = '\0'; // 确保输出字符串以null结尾

    printf("Converted string: %s
", outbuf);

    free(outbuf);
    iconv_close(cd);
    return 0;
}