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glibc/iconvdata/tst-table-from.c
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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); | |
} | |
return 0; | |
} |