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/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Copyright (c) 2011 The FreeBSD Foundation
* All rights reserved.
* Portions of this software were developed by David Chisnall
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <wchar.h>
#include <wctype.h>
#include "xlocale_private.h"
/*
* Convert a wide character string to an unsigned long integer.
*/
unsigned long
wcstoul_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
int base, locale_t locale)
{
const wchar_t *s;
unsigned long acc;
wchar_t c;
unsigned long cutoff;
int neg, any, cutlim;
FIX_LOCALE(locale);
/*
* See strtol for comments as to the logic used.
*/
s = nptr;
do {
c = *s++;
} while (iswspace_l(c, locale));
if (c == L'-') {
neg = 1;
c = *s++;
} else {
neg = 0;
if (c == L'+')
c = *s++;
}
if ((base == 0 || base == 16) &&
c == L'0' && (*s == L'x' || *s == L'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == L'0' ? 8 : 10;
acc = any = 0;
if (base < 2 || base > 36)
goto noconv;
cutoff = ULONG_MAX / base;
cutlim = ULONG_MAX % base;
for ( ; ; c = *s++) {
#ifdef notyet
if (iswdigit_l(c, locale))
c = digittoint_l(c, locale);
else
#endif
if (c >= L'0' && c <= L'9')
c -= L'0';
else if (c >= L'A' && c <= L'Z')
c -= L'A' - 10;
else if (c >= L'a' && c <= L'z')
c -= L'a' - 10;
else
break;
if (c >= base)
break;
if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
any = -1;
else {
any = 1;
acc *= base;
acc += c;
}
}
if (any < 0) {
acc = ULONG_MAX;
errno = ERANGE;
} else if (!any) {
noconv:
errno = EINVAL;
} else if (neg)
acc = -acc;
if (endptr != NULL)
*endptr = (wchar_t *)(any ? s - 1 : nptr);
return (acc);
}
unsigned long
wcstoul(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base)
{
return wcstoul_l(nptr, endptr, base, __get_locale());
}
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