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#if HAVE_CONFIG_H
20#  include <config.h>
21#endif
22
23#include <errno.h>
24#include <iconv.h>
25#include <stdio.h>
26
27int 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}
82