mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-09 23:00:07 +00:00
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/* 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 <stdbool.h>
|
|
#include <wchar.h>
|
|
#include <wctype.h>
|
|
|
|
#include "../locale/outdigits.h"
|
|
#include "../locale/outdigitswc.h"
|
|
|
|
static CHAR_T *
|
|
_i18n_number_rewrite (CHAR_T *w, CHAR_T *rear_ptr, CHAR_T *end)
|
|
{
|
|
#ifdef COMPILE_WPRINTF
|
|
# define decimal NULL
|
|
# define thousands NULL
|
|
#else
|
|
char decimal[MB_LEN_MAX + 1];
|
|
char thousands[MB_LEN_MAX + 1];
|
|
#endif
|
|
|
|
/* "to_outpunct" is a map from ASCII decimal point and thousands-sep
|
|
to their equivalent in locale. This is defined for locales which
|
|
use extra decimal point and thousands-sep. */
|
|
wctrans_t map = __wctrans ("to_outpunct");
|
|
wint_t wdecimal = __towctrans (L'.', map);
|
|
wint_t wthousands = __towctrans (L',', map);
|
|
|
|
#ifndef COMPILE_WPRINTF
|
|
if (__glibc_unlikely (map != NULL))
|
|
{
|
|
mbstate_t state;
|
|
memset (&state, '\0', sizeof (state));
|
|
|
|
size_t n = __wcrtomb (decimal, wdecimal, &state);
|
|
if (n == (size_t) -1)
|
|
memcpy (decimal, ".", 2);
|
|
else
|
|
decimal[n] = '\0';
|
|
|
|
memset (&state, '\0', sizeof (state));
|
|
|
|
n = __wcrtomb (thousands, wthousands, &state);
|
|
if (n == (size_t) -1)
|
|
memcpy (thousands, ",", 2);
|
|
else
|
|
thousands[n] = '\0';
|
|
}
|
|
#endif
|
|
|
|
/* Copy existing string so that nothing gets overwritten. */
|
|
CHAR_T *src;
|
|
bool use_alloca = __libc_use_alloca ((rear_ptr - w) * sizeof (CHAR_T));
|
|
if (__builtin_expect (use_alloca, true))
|
|
src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
|
|
else
|
|
{
|
|
src = (CHAR_T *) malloc ((rear_ptr - w) * sizeof (CHAR_T));
|
|
if (src == NULL)
|
|
/* If we cannot allocate the memory don't rewrite the string.
|
|
It is better than nothing. */
|
|
return w;
|
|
}
|
|
|
|
CHAR_T *s = (CHAR_T *) __mempcpy (src, w,
|
|
(rear_ptr - w) * sizeof (CHAR_T));
|
|
|
|
w = end;
|
|
|
|
/* Process all characters in the string. */
|
|
while (--s >= src)
|
|
{
|
|
if (*s >= '0' && *s <= '9')
|
|
{
|
|
if (sizeof (CHAR_T) == 1)
|
|
w = (CHAR_T *) outdigit_value ((char *) w, *s - '0');
|
|
else
|
|
*--w = (CHAR_T) outdigitwc_value (*s - '0');
|
|
}
|
|
else if (__builtin_expect (map == NULL, 1) || (*s != '.' && *s != ','))
|
|
*--w = *s;
|
|
else
|
|
{
|
|
if (sizeof (CHAR_T) == 1)
|
|
{
|
|
const char *outpunct = *s == '.' ? decimal : thousands;
|
|
size_t dlen = strlen (outpunct);
|
|
|
|
w -= dlen;
|
|
while (dlen-- > 0)
|
|
w[dlen] = outpunct[dlen];
|
|
}
|
|
else
|
|
*--w = *s == '.' ? (CHAR_T) wdecimal : (CHAR_T) wthousands;
|
|
}
|
|
}
|
|
|
|
if (! use_alloca)
|
|
free (src);
|
|
|
|
return w;
|
|
}
|