linux utf8与gb2312转换函数

最新推荐文章于 2023-10-09 15:37:02 发布

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本文提供了一段C++代码实现，用于UTF-8与GB2312编码之间的相互转换。通过使用iconv库函数，文章中的示例程序展示了如何读取文本文件，并将UTF-8编码的文本转换为GB2312编码，然后再将GB2312编码转回UTF-8编码。

#includeiostream>
#includeiconv.h>
using namespace std;
int utf8togb2312(const char *sourcebuf,size_t sourcelen,char *destbuf,size_t destlen)
{
  iconv_t cd;
  if( (cd = iconv_open("gb2312","utf-8")) ==0 )
    return -1;
  memset(destbuf,0,destlen);
  const char **source = &sourcebuf;
  char **dest = &destbuf;
  if(-1 == iconv(cd,const_cast<char**>(source),&sourcelen,dest,&destlen))
    return -1;
  iconv_close(cd);
  return 0;
  
}
int gb2312toutf8(const char *sourcebuf,size_t sourcelen,char *destbuf,size_t destlen)
{
  iconv_t cd;
  if( (cd = iconv_open("utf-8","gb2312")) ==0 )
    return -1;
  memset(destbuf,0,destlen);
  const char **source = &sourcebuf;
  char **dest = &destbuf;
  if(-1 == iconv(cd,const_cast<char**>(source),&sourcelen,dest,&destlen))
    return -1;
  iconv_close(cd);
  return 0;
  
}
int main()
{
  FILE *fp = fopen("love.txt","r");
  if(fp == NULL)
    {
      cout  "open file faiulre"  endl;
      return 1;
    }
  char line[80];
  memset(line,0,80);
  if( NULL == fgets(line,80,fp))
    {
      cout  "read file failure"  endl;
      return 2;
    }
  char dest_gb2312[80];
  utf8togb2312(line,strlen(line),dest_gb2312,80);
  cout  "before convert(utf-8): "  line  endl;
  cout  "after convert(gb2312): "  dest_gb2312  endl;
  cout  endl  endl;
  char dest_utf8[80];
  gb2312toutf8(dest_gb2312,strlen(dest_gb2312),dest_utf8,80);
  cout  "before convert(gb2312)"  dest_gb2312  endl;
  cout  "after convert(utf-8)"  dest_utf8  endl;
    return 0;
}