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/* Test of conversion of unibyte character to wide character.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2008. */
#include <config.h>
#include <wchar.h>
#include "signature.h"
SIGNATURE_CHECK (btowc, wint_t, (int));
#include <locale.h>
#include <stdio.h>
#include "macros.h"
int
main (int argc, char *argv[])
{
int c;
/* configure should already have checked that the locale is supported. */
if (setlocale (LC_ALL, "") == NULL)
return 1;
ASSERT (btowc (EOF) == WEOF);
#ifdef __ANDROID__
/* On Android ≥ 5.0, the default locale is the "C.UTF-8" locale, not the
"C" locale. Furthermore, when you attempt to set the "C" or "POSIX"
locale via setlocale(), what you get is a "C" locale with UTF-8 encoding,
that is, effectively the "C.UTF-8" locale. */
if (argc > 1 && strcmp (argv[1], "3") == 0 && MB_CUR_MAX > 1)
argv[1] = "2";
#endif
if (argc > 1)
switch (argv[1][0])
{
case '1':
/* Locale encoding is ISO-8859-1 or ISO-8859-15. */
for (c = 0; c < 0x80; c++)
ASSERT (btowc (c) == c);
for (c = 0xA0; c < 0x100; c++)
ASSERT (btowc (c) != WEOF);
return 0;
case '2':
/* Locale encoding is UTF-8. */
for (c = 0; c < 0x80; c++)
ASSERT (btowc (c) == c);
for (c = 0x80; c < 0x100; c++)
ASSERT (btowc (c) == WEOF);
return 0;
case '3':
/* C or POSIX locale. */
for (c = 0; c < 0x100; c++)
if (c != 0)
{
/* We are testing all nonnull bytes. */
wint_t wc = btowc (c);
/* POSIX:2018 says: "In the POSIX locale, btowc() shall not return
WEOF if c has a value in the range 0 to 255 inclusive." */
if (c < 0x80)
/* c is an ASCII character. */
ASSERT (wc == c);
else
/* On most platforms, the bytes 0x80..0xFF map to U+0080..U+00FF.
But on musl libc, the bytes 0x80..0xFF map to U+DF80..U+DFFF. */
ASSERT (wc == c || wc == 0xDF00 + c);
}
return 0;
}
return 1;
}
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