玩不转 iconv ，求助【已解决】

daschina

代码如下

#include <stdio.h> #include <stdlib.h> #include <iconv.h> int main(int argc, char *argv[]) {         FILE *fd = fopen(argv[1], "r");         if(fd == NULL)         {                 printf("E:Open %s failed.\n", argv[1]);         }         fseek(fd, 0, SEEK_END);         int content_size = ftell(fd);         fseek(fd, 0, SEEK_SET);         printf("File size = %d\n", content_size);     char *content = malloc(content_size +1);     if(NULL == content)     {         printf("E:Call to malloc failed.\n");         return 1;     }     bzero(content, content_size);     fread( content, content_size, 1, fd);          iconv_t cd = iconv_open("utf-8", "gbk");     if(cd == (iconv_t) -1)     {         printf("E:Call to iconv_open failed.\n");         return 1;     }     char *output = malloc(500);     if(NULL == output)     {         printf("E:Call to malloc failed.\n");         return 1;     }     bzero(output, 500);     unsigned int avail = 500;     unsigned int nconv = 0;     if(-1 == iconv(cd, &content, (size_t *)&content_size, &output, (size_t *)&avail))     {         printf("E:Call to iconv failed.\n");         return 1;     }          fd = fopen("/home/zhou/output", "w");     if(NULL == fd)     {         printf("E:Call to fopen failed.\n");         return 1;     }     fwrite(output, strlen(output), 1, fd);     fclose(fd);          return 0; }

输入 ANSI 编码的txt文件，没有输出

[ 本帖最后由 daschina 于 2010-1-25 13:46 编辑 ]

rain_fish

用
iconv_open("utf-8", "gb2312");

试试？

daschina

原帖由 rain_fish 于 2010-1-25 13:16 发表
用
iconv_open("utf-8", "gb2312");

试试？

刚试了一下，没用

rain_fish

不知道你是怎么用的，看看这个，我用的是Unicode到gb2312的转换

//代码转换:从一种编码转为另一种编码
int code_convert(char *from_charset,char *to_charset,char *inbuf,int inlen,unsigned char *outbuf,int& outlen)
{
        iconv_t cd;

        char **pin = &inbuf;
        unsigned char **pout = &outbuf;
        size_t len_tmp = outlen;
       
        cd = iconv_open(to_charset,from_charset);
        if (cd==0) return -1;
        memset(outbuf,0,outlen);
        if ( iconv(cd,pin,(size_t*)&inlen,(char**)pout,&len_tmp) == -1 )
                return -1;
        iconv_close(cd);

        outlen = outlen - len_tmp;//编码后的数据长度
        return 0;
}
//UNICODE码转为GB2312码
int u2g(char *inbuf,int inlen,unsigned char *outbuf,int& outlen)
{
        return code_convert("UNICODE","gb2312",inbuf,inlen,outbuf,outlen);
}

prolj

iconv -c -f utf-8 -t gb2312 file_utf-8 > file_gb2312

daschina

搞定了，原来

#include <iconv.h>

size_t iconv(iconv_t cd,
char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft);

这个函数转换玩了之后 outbuf 已经指到末尾了，被改变了，所以传递的时候这样

char *temp = outbuf;
iconv(td, &inbuf, in_size, &temp, out_size);

然后读 outbuf 就可以了

daschina

结贴咯