vorbis-tools-1.2.0/share/makemap.c

   1 /*
   2  * Copyright (C) 2001 Edmund Grimley Evans <edmundo@rano.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <errno.h>
  24 #include <iconv.h>
  25 #include <stdio.h>
  26
  27 int main(int argc, char *argv[])
  28 {
  29   iconv_t cd;
  30   const char *ib;
  31   char *ob;
  32   size_t ibl, obl, k;
  33   unsigned char c, buf[4];
  34   int i, wc;
  35
  36   if (argc != 2) {
  37     printf("Usage: %s ENCODING\n", argv[0]);
  38     printf("Output a charset map for the 8-bit ENCODING.\n");
  39     return 1;
  40   }
  41
  42   cd = iconv_open("UCS-4", argv[1]);
  43   if (cd == (iconv_t)(-1)) {
  44     perror("iconv_open");
  45     return 1;
  46   }
  47
  48   for (i = 0; i < 256; i++) {
  49     c = i;
  50     ib = &c;
  51     ibl = 1;
  52     ob = buf;
  53     obl = 4;
  54     k = iconv(cd, &ib, &ibl, &ob, &obl);
  55     if (!k && !ibl && !obl) {
  56       wc = (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
  57       if (wc >= 0xffff) {
  58         printf("Dodgy value.\n");
  59         return 1;
  60       }
  61     }
  62     else if (k == (size_t)(-1) && errno == EILSEQ)
  63       wc = 0xffff;
  64     else {
  65       printf("Non-standard iconv.\n");
  66       return 1;
  67     }
  68
  69     if (i % 8 == 0)
  70       printf("  ");
  71     printf("0x%04x", wc);
  72     if (i == 255)
  73       printf("\n");
  74     else if (i % 8 == 7)
  75       printf(",\n");
  76     else
  77       printf(", ");
  78   }
  79
  80   return 0;
  81 }