/*****************************************************************************
* utf8.c: Test for UTF-8 encoding/decoding stuff
*****************************************************************************
* Copyright (C) 2006 Rémi Denis-Courmont
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_charset.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
static void test_towc(const char *in, ssize_t want_len, uint32_t want_cp)
{
uint32_t cp;
ssize_t len;
if (want_len != -1)
printf("\"%s\" is U+%04"PRIX32" (%zd bytes)\n", in, want_cp, want_len);
else
printf("Invalid sequence of %zu bytes\n", strlen(in));
len = vlc_towc(in, &cp);
if (len != want_len)
{
printf(" ERROR: length mismatch: %zd\n", len);
exit(1);
}
if (len != -1 && want_cp != cp)
{
printf(" ERROR: code point mismatch: %04"PRIX32"\n", cp);
exit(1);
}
}
static void test (const char *in, const char *out)
{
bool isutf8 = !strcmp (in, out);
char *str = strdup (in);
if (str == NULL)
abort ();
if (isutf8)
printf ("\"%s\" should be accepted...\n", in);
else
printf ("\"%s\" should be rewritten as \"%s\"...\n", in, out);
if ((IsUTF8 (in) != NULL) != isutf8)
{
printf (" ERROR: IsUTF8 (%s) failed\n", in);
exit (1);
}
if ((EnsureUTF8 (str) != NULL) != isutf8)
{
printf (" ERROR: EnsureUTF8 (%s) failed\n", in);
exit (2);
}
if (strcmp (str, out))
{
printf (" ERROR: got \"%s\"\n", str);
exit (3);
}
if ((EnsureUTF8 (str) == NULL) || IsUTF8 (str) == NULL)
{
printf (" ERROR: EnsureUTF8 (%s) is not UTF-8\n", in);
exit (4);
}
free (str);
}
static void test_strcasestr (const char *h, const char *n, ssize_t offset)
{
printf ("\"%s\" should %sbe found in \"%s\"...\n", n,
(offset != -1) ? "" : "not ", h);
const char *ret = vlc_strcasestr (h, n);
if (offset == -1)
{
if (ret != NULL)
{
printf ("ERROR: got \"%s\"\n", ret);
exit (10);
}
}
else
{
if (ret == NULL)
{
printf ("ERROR: not found\n");
exit (11);
}
if ((ret - h) != offset)
{
printf ("ERROR: got \"%s\" instead of \"%s\"\n",
ret, h + offset);
exit (12);
}
}
}
int main (void)
{
(void)setvbuf (stdout, NULL, _IONBF, 0);
/* Valid sequences */
test_towc("", 0, 0);
test_towc("\n", 1, '\n');
test_towc("\x7F", 1, 0x7F);
test_towc("\xC3\xA9", 2, 0xE9);
test_towc("\xDF\xBF", 2, 0x7FF);
test_towc("\xE2\x82\xAC", 3, 0x20AC);
test_towc("\xEF\xBF\xBF", 3, 0xFFFF);
test_towc("\xF0\x90\x80\x81", 4, 0x10001);
test_towc("\xF4\x80\x80\x81", 4, 0x100001);
test_towc("\xF4\x8F\xBF\xBF", 4, 0x10FFFF);
/* Overlongs */
test_towc("\xC0\x80", -1, 0);
test_towc("\xC1\xBF", -1, 0x7F);
test_towc("\xE0\x80\x80", -1, 0);
test_towc("\xE0\x9F\xBF", -1, 0x7FF);
test_towc("\xF0\x80\x80\x80", -1, 0);
test_towc("\xF0\x8F\xBF\xBF", -1, 0xFFFF);
/* Out of range */
test_towc("\xF4\x90\x80\x80", -1, 0x110000);
test_towc("\xF7\xBF\xBF\xBF", -1, 0x1FFFFF);
/* Surrogates */
test_towc("\xED\x9F\xBF", 3, 0xD7FF);
test_towc("\xED\xA0\x80", -1, 0xD800);
test_towc("\xED\xBF\xBF", -1, 0xDFFF);
test_towc("\xEE\x80\x80", 3, 0xE000);
/* Overlong surrogates */
test_towc("\xF0\x8D\x88\x80", -1, 0xD800);
test_towc("\xF0\x8D\xBF\xBF", -1, 0xDFFF);
/* Spurious continuation byte */
test_towc("\x80", -1, 0);
test_towc("\xBF", -1, 0);
/* Missing continuation byte */
test_towc("\xDF", -1, 0x7FF);
test_towc("\xEF", -1, 0xFFFF);
test_towc("\xF4", -1, 0x10FFFF);
test_towc("\xEF\xBF", -1, 0xFFFF);
test_towc("\xF4\xBF\xBF", -1, 0x10FFFF);
test ("", "");
test ("this_should_not_be_modified_1234",
"this_should_not_be_modified_1234");
test ("\xFF", "?"); // invalid byte
test ("\xEF\xBB\xBFHello", "\xEF\xBB\xBFHello"); // BOM
test ("\x00\xE9", ""); // no conversion past end of string
test ("T\xC3\xA9l\xC3\xA9vision \xE2\x82\xAC", "Télévision €");
test ("T\xE9l\xE9vision", "T?l?vision");
test ("\xC1\x94\xC3\xa9l\xC3\xA9vision", "??élévision"); /* overlong */
test ("Hel\xF0\x83\x85\x87lo", "Hel????lo"); /* more overlong */
test_strcasestr ("", "", 0);
test_strcasestr ("", "a", -1);
test_strcasestr ("a", "", 0);
test_strcasestr ("heLLo", "l", 2);
test_strcasestr ("heLLo", "lo", 3);
test_strcasestr ("heLLo", "llo", 2);
test_strcasestr ("heLLo", "la", -1);
test_strcasestr ("heLLo", "oa", -1);
test_strcasestr ("Télé", "é", 1);
test_strcasestr ("Télé", "élé", 1);
test_strcasestr ("Télé", "léé", -1);
return 0;
}
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(vorverarbeitet am 2026-11-04)
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