[apple/libc.git] / locale / FreeBSD / wcstol.c

/*-
 * Copyright (c) 1990, 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>
__FBSDID("$FreeBSD: src/lib/libc/locale/wcstol.c,v 1.2 2007/01/09 00:28:01 imp Exp $");

#include "xlocale_private.h"

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

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

	NORMALIZE_LOCALE(loc);
	/*
	 * See strtol for comments as to the logic used.
	 */
	s = nptr;
	do {
		c = *s++;
	} while (iswspace_l(c, loc));
	if (c == '-') {
		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 = neg ? (unsigned long)-(LONG_MIN + LONG_MAX) + LONG_MAX
	    : LONG_MAX;
	cutlim = cutoff % base;
	cutoff /= 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 = neg ? LONG_MIN : LONG_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);
}

long
wcstol(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base)
{
	return wcstol_l(nptr, endptr, base, __current_locale());
}
Commit	Line	Data
5b2abdfb	1	/*-
9385eb3d	2	* Copyright (c) 1990, 1993
e9ce8d39 A	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.
e9ce8d39 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
9385eb3d	30	#include <sys/cdefs.h>
1f2f436a	31	__FBSDID("$FreeBSD: src/lib/libc/locale/wcstol.c,v 1.2 2007/01/09 00:28:01 imp Exp $");
5b2abdfb	32
ad3c9f2a A	33	#include "xlocale_private.h"
ad3c9f2a A	34
e9ce8d39	35	#include <ctype.h>
9385eb3d A	36	#include <errno.h>
	37	#include <limits.h>
	38	#include <wchar.h>
	39	#include <wctype.h>
e9ce8d39 A	40
e9ce8d39 A	41	/*
9385eb3d	42	* Convert a string to a long integer.
e9ce8d39	43	*/
9385eb3d	44	long
ad3c9f2a A	45	wcstol_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
ad3c9f2a A	46	int base, locale_t loc)
e9ce8d39	47	{
9385eb3d A	48	const wchar_t *s;
	49	unsigned long acc;
	50	wchar_t c;
	51	unsigned long cutoff;
	52	int neg, any, cutlim;
e9ce8d39	53
ad3c9f2a	54	NORMALIZE_LOCALE(loc);
e9ce8d39	55	/*
9385eb3d	56	* See strtol for comments as to the logic used.
e9ce8d39 A	57	*/
	58	s = nptr;
	59	do {
	60	c = *s++;
ad3c9f2a	61	} while (iswspace_l(c, loc));
e9ce8d39 A	62	if (c == '-') {
	63	neg = 1;
	64	c = *s++;
5b2abdfb	65	} else {
e9ce8d39	66	neg = 0;
9385eb3d	67	if (c == L'+')
e9ce8d39 A	68	c = *s++;
	69	}
	70	if ((base == 0 \|\| base == 16) &&
9385eb3d	71	c == L'0' && (s == L'x' \|\| s == L'X')) {
e9ce8d39 A	72	c = s[1];
	73	s += 2;
	74	base = 16;
	75	}
	76	if (base == 0)
9385eb3d A	77	base = c == L'0' ? 8 : 10;
	78	acc = any = 0;
	79	if (base < 2 \|\| base > 36)
	80	goto noconv;
	81
	82	cutoff = neg ? (unsigned long)-(LONG_MIN + LONG_MAX) + LONG_MAX
	83	: LONG_MAX;
	84	cutlim = cutoff % base;
	85	cutoff /= base;
	86	for ( ; ; c = *s++) {
	87	#ifdef notyet
ad3c9f2a A	88	if (iswdigit_l(c, loc))
ad3c9f2a A	89	c = digittoint_l(c, loc);
9385eb3d A	90	else
	91	#endif
	92	if (c >= L'0' && c <= L'9')
	93	c -= L'0';
	94	else if (c >= L'A' && c <= L'Z')
	95	c -= L'A' - 10;
	96	else if (c >= L'a' && c <= L'z')
	97	c -= L'a' - 10;
e9ce8d39 A	98	else
	99	break;
	100	if (c >= base)
	101	break;
5b2abdfb	102	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
e9ce8d39 A	103	any = -1;
	104	else {
	105	any = 1;
9385eb3d	106	acc *= base;
e9ce8d39 A	107	acc += c;
	108	}
	109	}
	110	if (any < 0) {
9385eb3d	111	acc = neg ? LONG_MIN : LONG_MAX;
e9ce8d39	112	errno = ERANGE;
9385eb3d A	113	} else if (!any) {
	114	noconv:
	115	errno = EINVAL;
e9ce8d39 A	116	} else if (neg)
e9ce8d39 A	117	acc = -acc;
9385eb3d A	118	if (endptr != NULL)
9385eb3d A	119	endptr = (wchar_t )(any ? s - 1 : nptr);
e9ce8d39 A	120	return (acc);
e9ce8d39 A	121	}
ad3c9f2a A	122
	123	long
	124	wcstol(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base)
	125	{
	126	return wcstol_l(nptr, endptr, base, __current_locale());
	127	}