[apple/libc.git] / locale / FreeBSD / wcstoimax.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[] = "from @(#)strtol.c	8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoimax.c,v 1.8 2002/09/06 11:23:59 tjr Exp ");
#endif
__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoimax.c,v 1.3 2007/01/09 00:28:01 imp Exp $");

#include "xlocale_private.h"

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

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

	NORMALIZE_LOCALE(loc);
	/*
	 * See strtoimax 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 = neg ? (uintmax_t)-(INTMAX_MIN + INTMAX_MAX) + INTMAX_MAX
	    : INTMAX_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 >= 'a' && c <= '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 ? INTMAX_MIN : INTMAX_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);
}

intmax_t
wcstoimax(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
    int base)
{
	return wcstoimax_l(nptr, endptr, base, __current_locale());
}
Commit	Line	Data
5b2abdfb	1	/*-
e9ce8d39 A	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.
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 A	30	#include <sys/cdefs.h>
9385eb3d A	31	#if 0
5b2abdfb	32	#if defined(LIBC_SCCS) && !defined(lint)
9385eb3d	33	static char sccsid[] = "from @(#)strtol.c 8.1 (Berkeley) 6/4/93";
5b2abdfb	34	#endif /* LIBC_SCCS and not lint */
9385eb3d	35	__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoimax.c,v 1.8 2002/09/06 11:23:59 tjr Exp ");
5b2abdfb	36	#endif
1f2f436a	37	__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoimax.c,v 1.3 2007/01/09 00:28:01 imp Exp $");
e9ce8d39	38
ad3c9f2a A	39	#include "xlocale_private.h"
ad3c9f2a A	40
e9ce8d39	41	#include <errno.h>
9385eb3d	42	#include <inttypes.h>
e9ce8d39	43	#include <stdlib.h>
9385eb3d A	44	#include <wchar.h>
9385eb3d A	45	#include <wctype.h>
e9ce8d39 A	46
e9ce8d39 A	47	/*
9385eb3d	48	* Convert a wide character string to an intmax_t integer.
e9ce8d39	49	*/
9385eb3d	50	intmax_t
ad3c9f2a A	51	wcstoimax_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
ad3c9f2a A	52	int base, locale_t loc)
e9ce8d39	53	{
9385eb3d A	54	const wchar_t *s;
	55	uintmax_t acc;
	56	wchar_t c;
	57	uintmax_t cutoff;
	58	int neg, any, cutlim;
e9ce8d39	59
ad3c9f2a	60	NORMALIZE_LOCALE(loc);
e9ce8d39	61	/*
9385eb3d	62	* See strtoimax for comments as to the logic used.
e9ce8d39 A	63	*/
	64	s = nptr;
	65	do {
	66	c = *s++;
ad3c9f2a	67	} while (iswspace_l(c, loc));
9385eb3d	68	if (c == L'-') {
e9ce8d39 A	69	neg = 1;
e9ce8d39 A	70	c = *s++;
5b2abdfb	71	} else {
e9ce8d39	72	neg = 0;
9385eb3d	73	if (c == L'+')
e9ce8d39 A	74	c = *s++;
	75	}
	76	if ((base == 0 \|\| base == 16) &&
9385eb3d	77	c == L'0' && (s == L'x' \|\| s == L'X')) {
e9ce8d39 A	78	c = s[1];
	79	s += 2;
	80	base = 16;
	81	}
	82	if (base == 0)
9385eb3d A	83	base = c == L'0' ? 8 : 10;
	84	acc = any = 0;
	85	if (base < 2 \|\| base > 36)
	86	goto noconv;
	87
	88	cutoff = neg ? (uintmax_t)-(INTMAX_MIN + INTMAX_MAX) + INTMAX_MAX
	89	: INTMAX_MAX;
	90	cutlim = cutoff % base;
	91	cutoff /= base;
	92	for ( ; ; c = *s++) {
	93	#ifdef notyet
ad3c9f2a A	94	if (iswdigit_l(c, loc))
ad3c9f2a A	95	c = digittoint_l(c, loc);
9385eb3d A	96	else
	97	#endif
	98	if (c >= L'0' && c <= L'9')
	99	c -= L'0';
	100	else if (c >= L'A' && c <= L'Z')
	101	c -= L'A' - 10;
	102	else if (c >= 'a' && c <= 'z')
	103	c -= L'a' - 10;
e9ce8d39 A	104	else
	105	break;
	106	if (c >= base)
	107	break;
5b2abdfb	108	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
e9ce8d39 A	109	any = -1;
	110	else {
	111	any = 1;
9385eb3d	112	acc *= base;
e9ce8d39 A	113	acc += c;
	114	}
	115	}
	116	if (any < 0) {
9385eb3d	117	acc = neg ? INTMAX_MIN : INTMAX_MAX;
e9ce8d39	118	errno = ERANGE;
9385eb3d A	119	} else if (!any) {
	120	noconv:
	121	errno = EINVAL;
e9ce8d39 A	122	} else if (neg)
e9ce8d39 A	123	acc = -acc;
9385eb3d A	124	if (endptr != NULL)
9385eb3d A	125	endptr = (wchar_t )(any ? s - 1 : nptr);
e9ce8d39 A	126	return (acc);
e9ce8d39 A	127	}
ad3c9f2a A	128
	129	intmax_t
	130	wcstoimax(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
	131	int base)
	132	{
	133	return wcstoimax_l(nptr, endptr, base, __current_locale());
	134	}