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/* Copyright (C) 2000-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* 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 <string.h>
#include <iconv.h>
#include <errno.h>
int
main (int argc, char *argv[])
{
const char *charset;
iconv_t cd;
int bmp_only;
int no_tags;
if (argc != 2)
{
fprintf (stderr, "Usage: tst-table-to charset\n");
return 1;
}
charset = argv[1];
cd = iconv_open (charset, "UTF-8");
if (cd == (iconv_t)(-1))
{
perror ("iconv_open");
return 1;
}
/* When testing UTF-8, stop at 0x10000, otherwise the output
file gets too big. */
bmp_only = (strcmp (charset, "UTF-8") == 0);
/* When testing any encoding other than UTF-8 or GB18030, stop at 0xE0000,
because the conversion drops Unicode tag characters (range
U+E0000..U+E007F). */
no_tags = !(strcmp (charset, "UTF-8") == 0
|| strcmp (charset, "GB18030") == 0);
{
unsigned int i;
unsigned char buf[10];
for (i = 0; i < (bmp_only ? 0x10000 : no_tags ? 0xE0000 : 0x110000); i++)
{
unsigned char in[6];
unsigned int incount =
(i < 0x80 ? (in[0] = i, 1)
: i < 0x800 ? (in[0] = 0xc0 | (i >> 6),
in[1] = 0x80 | (i & 0x3f), 2)
: i < 0x10000 ? (in[0] = 0xe0 | (i >> 12),
in[1] = 0x80 | ((i >> 6) & 0x3f),
in[2] = 0x80 | (i & 0x3f), 3)
: /* i < 0x200000 */ (in[0] = 0xf0 | (i >> 18),
in[1] = 0x80 | ((i >> 12) & 0x3f),
in[2] = 0x80 | ((i >> 6) & 0x3f),
in[3] = 0x80 | (i & 0x3f), 4));
const char *inbuf = (const char *) in;
size_t inbytesleft = incount;
char *outbuf = (char *) buf;
size_t outbytesleft = sizeof (buf);
size_t result;
size_t result2 = 0;
iconv (cd, NULL, NULL, NULL, NULL);
result = iconv (cd,
(char **) &inbuf, &inbytesleft,
&outbuf, &outbytesleft);
if (result != (size_t)(-1))
result2 = iconv (cd, NULL, NULL, &outbuf, &outbytesleft);
if (result == (size_t)(-1) || result2 == (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) (incount - 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;
}
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