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/* 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 CHARSET to Unicode.
This is a good test for CHARSET's iconv() module, in particular the
FROM_LOOP BODY macro. */
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iconv.h>
#include <errno.h>
/* Converts a byte buffer to a hexadecimal string. */
static const char*
hexbuf (unsigned char buf[], unsigned int buflen)
{
static char msg[50];
switch (buflen)
{
case 1:
sprintf (msg, "0x%02X", buf[0]);
break;
case 2:
sprintf (msg, "0x%02X%02X", buf[0], buf[1]);
break;
case 3:
sprintf (msg, "0x%02X%02X%02X", buf[0], buf[1], buf[2]);
break;
case 4:
sprintf (msg, "0x%02X%02X%02X%02X", buf[0], buf[1], buf[2], buf[3]);
break;
default:
abort ();
}
return msg;
}
/* Attempts to convert a byte buffer BUF (BUFLEN bytes) to OUT (6 bytes)
using the conversion descriptor CD. Returns the number of written bytes,
or 0 if ambiguous, or -1 if invalid. */
static int
try (iconv_t cd, unsigned char buf[], unsigned int buflen, unsigned char *out)
{
const char *inbuf = (const char *) buf;
size_t inbytesleft = buflen;
char *outbuf = (char *) out;
size_t outbytesleft = 6;
size_t result = iconv (cd,
(char **) &inbuf, &inbytesleft,
&outbuf, &outbytesleft);
if (result == (size_t)(-1))
{
if (errno == EILSEQ)
{
return -1;
}
else if (errno == EINVAL)
{
return 0;
}
else
{
int saved_errno = errno;
fprintf (stderr, "%s: iconv error: ", hexbuf (buf, buflen));
errno = saved_errno;
perror ("");
exit (1);
}
}
else
{
if (inbytesleft != 0)
{
fprintf (stderr, "%s: inbytes = %ld, outbytes = %ld\n",
hexbuf (buf, buflen),
(long) (buflen - inbytesleft),
(long) (6 - outbytesleft));
exit (1);
}
return 6 - outbytesleft;
}
}
/* Returns the out[] buffer as a Unicode value. */
static unsigned int
utf8_decode (const unsigned char *out, unsigned int outlen)
{
return (outlen==1 ? out[0] :
outlen==2 ? ((out[0] & 0x1f) << 6) + (out[1] & 0x3f) :
outlen==3 ? ((out[0] & 0x0f) << 12) + ((out[1] & 0x3f) << 6) + (out[2] & 0x3f) :
outlen==4 ? ((out[0] & 0x07) << 18) + ((out[1] & 0x3f) << 12) + ((out[2] & 0x3f) << 6) + (out[3] & 0x3f) :
outlen==5 ? ((out[0] & 0x03) << 24) + ((out[1] & 0x3f) << 18) + ((out[2] & 0x3f) << 12) + ((out[3] & 0x3f) << 6) + (out[4] & 0x3f) :
outlen==6 ? ((out[0] & 0x01) << 30) + ((out[1] & 0x3f) << 24) + ((out[2] & 0x3f) << 18) + ((out[3] & 0x3f) << 12) + ((out[4] & 0x3f) << 6) + (out[5] & 0x3f) :
0xfffd);
}
int
main (int argc, char *argv[])
{
const char *charset;
iconv_t cd;
if (argc != 2)
{
fprintf (stderr, "Usage: tst-table-to charset\n");
exit (1);
}
charset = argv[1];
cd = iconv_open ("UTF-8", charset);
if (cd == (iconv_t)(-1))
{
perror ("iconv_open");
exit (1);
}
{
unsigned char out[6];
unsigned char buf[4];
unsigned int i0, i1, i2, i3;
int result;
for (i0 = 0; i0 < 0x100; i0++)
{
buf[0] = i0;
result = try (cd, buf, 1, out);
if (result < 0)
{
}
else if (result > 0)
{
printf ("0x%02X\t0x%04X\n",
i0, utf8_decode (out, result));
}
else
{
for (i1 = 0; i1 < 0x100; i1++)
{
buf[1] = i1;
result = try (cd, buf, 2, out);
if (result < 0)
{
}
else if (result > 0)
{
printf ("0x%02X%02X\t0x%04X\n",
i0, i1, utf8_decode (out, result));
}
else
{
for (i2 = 0; i2 < 0x100; i2++)
{
buf[2] = i2;
result = try (cd, buf, 3, out);
if (result < 0)
{
}
else if (result > 0)
{
printf ("0x%02X%02X%02X\t0x%04X\n",
i0, i1, i2, utf8_decode (out, result));
}
else if (strcmp (charset, "UTF-8"))
{
for (i3 = 0; i3 < 0x100; i3++)
{
buf[3] = i3;
result = try (cd, buf, 4, out);
if (result < 0)
{
}
else if (result > 0)
{
printf ("0x%02X%02X%02X%02X\t0x%04X\n",
i0, i1, i2, i3,
utf8_decode (out, result));
}
else
{
fprintf (stderr,
"%s: incomplete byte sequence\n",
hexbuf (buf, 4));
exit (1);
}
}
}
}
}
}
}
}
}
if (iconv_close (cd) < 0)
{
perror ("iconv_close");
exit (1);
}
if (ferror (stdin) || fflush (stdout) || ferror (stdout))
{
fprintf (stderr, "I/O error\n");
exit (1);
}
exit (0);
}
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