[apple/libc.git] / locale / wcstoull-fbsd.c

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * 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>
#if 0
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strtouq.c	8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp ");
#endif
__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoull.c,v 1.2 2007/01/09 00:28:01 imp Exp $");

#include "xlocale_private.h"

#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <wchar.h>
#include <wctype.h>

/*
 * Convert a wide character string to an unsigned long long integer.
 */
unsigned long long
wcstoull_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
    int base, locale_t loc)
{
	const wchar_t *s;
	unsigned long long acc;
	wchar_t c;
	unsigned long long cutoff;
	int neg, any, cutlim;

	NORMALIZE_LOCALE(loc);
	/*
	 * See strtoull for comments as to the logic used.
	 */
	s = nptr;
	do {
		c = *s++;
	} while (iswspace_l(c, loc));
	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 = ULLONG_MAX / base;
	cutlim = ULLONG_MAX % base;
	for ( ; ; c = *s++) {
#ifdef notyet
		if (iswdigit_l(c, loc))
			c = digittoint_l(c, loc);
		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 = ULLONG_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 long
wcstoull(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
    int base)
{
	return wcstoull_l(nptr, endptr, base, __current_locale());
}
Commit	Line	Data
224c7076 A	1	/*-
	2	* Copyright (c) 1992, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
224c7076 A	13	* 4. Neither the name of the University nor the names of its contributors
	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
	30	#include <sys/cdefs.h>
	31	#if 0
	32	#if defined(LIBC_SCCS) && !defined(lint)
	33	static char sccsid[] = "@(#)strtouq.c 8.1 (Berkeley) 6/4/93";
	34	#endif /* LIBC_SCCS and not lint */
	35	__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp ");
	36	#endif
1f2f436a	37	__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoull.c,v 1.2 2007/01/09 00:28:01 imp Exp $");
224c7076 A	38
	39	#include "xlocale_private.h"
	40
	41	#include <errno.h>
	42	#include <limits.h>
	43	#include <stdlib.h>
	44	#include <wchar.h>
	45	#include <wctype.h>
	46
	47	/*
	48	* Convert a wide character string to an unsigned long long integer.
	49	*/
	50	unsigned long long
	51	wcstoull_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
	52	int base, locale_t loc)
	53	{
	54	const wchar_t *s;
	55	unsigned long long acc;
	56	wchar_t c;
	57	unsigned long long cutoff;
	58	int neg, any, cutlim;
	59
	60	NORMALIZE_LOCALE(loc);
	61	/*
	62	* See strtoull for comments as to the logic used.
	63	*/
	64	s = nptr;
	65	do {
	66	c = *s++;
	67	} while (iswspace_l(c, loc));
	68	if (c == L'-') {
	69	neg = 1;
	70	c = *s++;
	71	} else {
	72	neg = 0;
	73	if (c == L'+')
	74	c = *s++;
	75	}
	76	if ((base == 0 \|\| base == 16) &&
	77	c == L'0' && (s == L'x' \|\| s == L'X')) {
	78	c = s[1];
	79	s += 2;
	80	base = 16;
	81	}
	82	if (base == 0)
	83	base = c == L'0' ? 8 : 10;
	84	acc = any = 0;
	85	if (base < 2 \|\| base > 36)
	86	goto noconv;
	87
	88	cutoff = ULLONG_MAX / base;
	89	cutlim = ULLONG_MAX % base;
	90	for ( ; ; c = *s++) {
	91	#ifdef notyet
	92	if (iswdigit_l(c, loc))
	93	c = digittoint_l(c, loc);
	94	else
	95	#endif
	96	if (c >= L'0' && c <= L'9')
	97	c -= L'0';
	98	else if (c >= L'A' && c <= L'Z')
	99	c -= L'A' - 10;
	100	else if (c >= L'a' && c <= L'z')
	101	c -= L'a' - 10;
102	else
103	break;
104	if (c >= base)
105	break;
106	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
107	any = -1;
108	else {
109	any = 1;
110	acc *= base;
111	acc += c;
112	}
113	}
114	if (any < 0) {
115	acc = ULLONG_MAX;
116	errno = ERANGE;
117	} else if (!any) {
118	noconv:
119	errno = EINVAL;
120	} else if (neg)
121	acc = -acc;
122	if (endptr != NULL)
123	endptr = (wchar_t )(any ? s - 1 : nptr);
124	return (acc);
125	}
126
127	unsigned long long
128	wcstoull(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
129	int base)
130	{
131	return wcstoull_l(nptr, endptr, base, __current_locale());
132	}