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glibc/iconvdata/tst-table-from.c
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/* Copyright (C) 2000-2016 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 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 | |
<http://www.gnu.org/licenses/>. */ | |
/* 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> | |
/* If nonzero, ignore conversions outside Unicode plane 0. */ | |
static int bmp_only; | |
/* 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 (12 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 = 12; | |
size_t result; | |
iconv (cd, NULL, NULL, NULL, NULL); | |
result = iconv (cd, (char **) &inbuf, &inbytesleft, &outbuf, &outbytesleft); | |
if (result != (size_t)(-1)) | |
result = iconv (cd, NULL, NULL, &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) (12 - outbytesleft)); | |
exit (1); | |
} | |
return 12 - outbytesleft; | |
} | |
} | |
/* Returns the out[] buffer as a Unicode value, formatted as 0x%04X. */ | |
static const char * | |
utf8_decode (const unsigned char *out, unsigned int outlen) | |
{ | |
static char hexbuf[84]; | |
char *p = hexbuf; | |
while (outlen > 0) | |
{ | |
if (p > hexbuf) | |
*p++ = ' '; | |
if (out[0] < 0x80) | |
{ | |
sprintf (p, "0x%04X", out[0]); | |
out += 1; outlen -= 1; | |
} | |
else if (out[0] >= 0xc0 && out[0] < 0xe0 && outlen >= 2) | |
{ | |
sprintf (p, "0x%04X", ((out[0] & 0x1f) << 6) + (out[1] & 0x3f)); | |
out += 2; outlen -= 2; | |
} | |
else if (out[0] >= 0xe0 && out[0] < 0xf0 && outlen >= 3) | |
{ | |
sprintf (p, "0x%04X", ((out[0] & 0x0f) << 12) | |
+ ((out[1] & 0x3f) << 6) + (out[2] & 0x3f)); | |
out += 3; outlen -= 3; | |
} | |
else if (out[0] >= 0xf0 && out[0] < 0xf8 && outlen >= 4) | |
{ | |
sprintf (p, "0x%04X", ((out[0] & 0x07) << 18) | |
+ ((out[1] & 0x3f) << 12) | |
+ ((out[2] & 0x3f) << 6) + (out[3] & 0x3f)); | |
out += 4; outlen -= 4; | |
} | |
else if (out[0] >= 0xf8 && out[0] < 0xfc && outlen >= 5) | |
{ | |
sprintf (p, "0x%04X", ((out[0] & 0x03) << 24) | |
+ ((out[1] & 0x3f) << 18) | |
+ ((out[2] & 0x3f) << 12) | |
+ ((out[3] & 0x3f) << 6) + (out[4] & 0x3f)); | |
out += 5; outlen -= 5; | |
} | |
else if (out[0] >= 0xfc && out[0] < 0xfe && outlen >= 6) | |
{ | |
sprintf (p, "0x%04X", ((out[0] & 0x01) << 30) | |
+ ((out[1] & 0x3f) << 24) | |
+ ((out[2] & 0x3f) << 18) | |
+ ((out[3] & 0x3f) << 12) | |
+ ((out[4] & 0x3f) << 6) + (out[5] & 0x3f)); | |
out += 6; outlen -= 6; | |
} | |
else | |
{ | |
sprintf (p, "0x????"); | |
out += 1; outlen -= 1; | |
} | |
if (bmp_only && strlen (p) > 6) | |
/* Ignore conversions outside Unicode plane 0. */ | |
return NULL; | |
p += strlen (p); | |
} | |
return hexbuf; | |
} | |
int | |
main (int argc, char *argv[]) | |
{ | |
const char *charset; | |
iconv_t cd; | |
int search_depth; | |
if (argc != 2) | |
{ | |
fprintf (stderr, "Usage: tst-table-from charset\n"); | |
exit (1); | |
} | |
charset = argv[1]; | |
cd = iconv_open ("UTF-8", charset); | |
if (cd == (iconv_t)(-1)) | |
{ | |
perror ("iconv_open"); | |
exit (1); | |
} | |
/* When testing UTF-8 or GB18030, stop at 0x10000, otherwise the output | |
file gets too big. */ | |
bmp_only = (strcmp (charset, "UTF-8") == 0 | |
|| strcmp (charset, "GB18030") == 0); | |
search_depth = (strcmp (charset, "UTF-8") == 0 ? 3 : 4); | |
{ | |
unsigned char out[12]; | |
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) | |
{ | |
const char *unicode = utf8_decode (out, result); | |
if (unicode != NULL) | |
printf ("0x%02X\t%s\n", i0, unicode); | |
} | |
else | |
{ | |
for (i1 = 0; i1 < 0x100; i1++) | |
{ | |
buf[1] = i1; | |
result = try (cd, buf, 2, out); | |
if (result < 0) | |
{ | |
} | |
else if (result > 0) | |
{ | |
const char *unicode = utf8_decode (out, result); | |
if (unicode != NULL) | |
printf ("0x%02X%02X\t%s\n", i0, i1, unicode); | |
} | |
else | |
{ | |
for (i2 = 0; i2 < 0x100; i2++) | |
{ | |
buf[2] = i2; | |
result = try (cd, buf, 3, out); | |
if (result < 0) | |
{ | |
} | |
else if (result > 0) | |
{ | |
const char *unicode = utf8_decode (out, result); | |
if (unicode != NULL) | |
printf ("0x%02X%02X%02X\t%s\n", | |
i0, i1, i2, unicode); | |
} | |
else if (search_depth > 3) | |
{ | |
for (i3 = 0; i3 < 0x100; i3++) | |
{ | |
buf[3] = i3; | |
result = try (cd, buf, 4, out); | |
if (result < 0) | |
{ | |
} | |
else if (result > 0) | |
{ | |
const char *unicode = | |
utf8_decode (out, result); | |
if (unicode != NULL) | |
printf ("0x%02X%02X%02X%02X\t%s\n", | |
i0, i1, i2, i3, unicode); | |
} | |
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; | |
} |