1  #include <errno.h>
       2  #include <iconv.h>
       3  #include <stdbool.h>
       4  #include <stdio.h>
       5  #include <stdlib.h>
       6  #include <string.h>
       7  
       8  #define UCS_STR "\x4e\x8c" /* EUC-TW 0xa2a2, EUC-JP 0x */
       9  
      10  static const char *to_code;
      11  
      12  static bool
      13  xiconv (iconv_t cd, int out_size)
      14  {
      15    unsigned char euc[4];
      16    char *inp = (char *) UCS_STR;
      17    char *outp = (char *) euc;
      18    size_t inbytesleft = strlen (UCS_STR);
      19    size_t outbytesleft = out_size;
      20    size_t ret;
      21    bool fail = false;
      22  
      23    errno = 0;
      24    ret = iconv (cd, &inp, &inbytesleft, &outp, &outbytesleft);
      25    if (errno || ret == (size_t) -1)
      26      {
      27        fail = out_size == 4 || errno != E2BIG;
      28        printf ("expected %d (E2BIG), got %d (%m)\n", E2BIG, errno);
      29      }
      30    else
      31      {
      32        printf ("%s: 0x%02x%02x\n", to_code, euc[0], euc[1]);
      33        if (out_size == 1)
      34  	fail = true;
      35      }
      36  
      37    return fail;
      38  }
      39  
      40  
      41  static iconv_t
      42  xiconv_open (const char *code)
      43  {
      44    iconv_t cd;
      45    to_code = code;
      46    errno = 0;
      47    if (errno || (cd = iconv_open (to_code, "UCS-2BE")) == (iconv_t) -1)
      48      {
      49        puts ("Can't open converter");
      50        exit (1);
      51      }
      52    return cd;
      53  }
      54  
      55  
      56  int
      57  main (void)
      58  {
      59    iconv_t cd;
      60    int result = 0;
      61  
      62    cd = xiconv_open ("EUC-TW");
      63    result |= xiconv (cd, 4) == true;
      64    puts ("---");
      65    result |= xiconv (cd, 1) == true;
      66    puts ("---");
      67    iconv_close (cd);
      68  
      69    cd = xiconv_open ("EUC-JP");
      70    result |= xiconv (cd, 4) == true;
      71    puts ("---");
      72    result |= xiconv (cd, 1) == true;
      73    puts ("---");
      74    iconv_close (cd);
      75  
      76    return result;
      77  }