glibc/locale/outdigits.h

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/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.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/>. */
#include <assert.h>
#include <langinfo.h>
#include <string.h>
#include "../locale/localeinfo.h"
/* Look up the value of the next multibyte character and return its numerical
value if it is one of the digits known in the locale. If *DECIDED is
-1 this means it is not yet decided which form it is and we have to
search through all available digits. Otherwise we know which script
the digits are from. */
static inline char *
outdigit_value (char *s, int n)
{
const char *outdigit;
size_t dlen;
assert (0 <= n && n <= 9);
outdigit = _NL_CURRENT (LC_CTYPE, _NL_CTYPE_OUTDIGIT0_MB + n);
dlen = strlen (outdigit);
s -= dlen;
while (dlen-- > 0)
s[dlen] = outdigit[dlen];
return s;
}