glibc/iconvdata/tst-table-to.c

/* Copyright (C) 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* Create a table from Unicode to CHARSET.
   This is a good test for CHARSET's iconv() module, in particular the
   TO_LOOP BODY macro.  */

#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <iconv.h>
#include <errno.h>

int
main (int argc, char *argv[])
{
  const char *charset;
  iconv_t cd;

  if (argc != 2)
    {
      fprintf (stderr, "Usage: tst-table-to charset\n");
      return 1;
    }
  charset = argv[1];

  cd = iconv_open (charset, "UCS-2");
  if (cd == (iconv_t)(-1))
    {
      perror ("iconv_open");
      return 1;
    }

  {
    unsigned int i;
    unsigned char buf[10];

    for (i = 0; i < 0x10000; i++)
      {
	unsigned short in = i;
	const char *inbuf = (const char *) &in;
	size_t inbytesleft = sizeof (unsigned short);
	char *outbuf = (char *) buf;
	size_t outbytesleft = sizeof (buf);
	size_t result = iconv (cd,
			       (char **) &inbuf, &inbytesleft,
			       &outbuf, &outbytesleft);
	if (result == (size_t)(-1))
	  {
	    if (errno != EILSEQ)
	      {
		int saved_errno = errno;
		fprintf (stderr, "0x%02X: iconv error: ", i);
		errno = saved_errno;
		perror ("");
		return 1;
	      }
	  }
	else if (result == 0) /* ignore conversions with transliteration */
	  {
	    unsigned int j, jmax;
	    if (inbytesleft != 0 || outbytesleft == sizeof (buf))
	      {
		fprintf (stderr, "0x%02X: inbytes = %ld, outbytes = %ld\n", i,
			 (long) (sizeof (unsigned short) - inbytesleft),
			 (long) (sizeof (buf) - outbytesleft));
		return 1;
	      }
	    jmax = sizeof (buf) - outbytesleft;
	    printf ("0x");
	    for (j = 0; j < jmax; j++)
	      printf ("%02X", buf[j]);
	    printf ("\t0x%04X\n", i);
	  }
      }
  }

  if (iconv_close (cd) < 0)
    {
      perror ("iconv_close");
      return 1;
    }

  if (ferror (stdin) || fflush (stdout) || ferror (stdout))
    {
      fprintf (stderr, "I/O error\n");
      return 1;
    }

  return 0;
}