git.saurik.com Git - apple/libc.git/blame_incremental

... / ...

Commit	Line	Data
	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.
	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[] = "@(#)strtoq.c 8.1 (Berkeley) 6/4/93";
	34	#endif /* LIBC_SCCS and not lint */
	35	__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoll.c,v 1.19 2002/09/06 11:23:59 tjr Exp ");
	36	#endif
	37	__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoll.c,v 1.2 2007/01/09 00:28:01 imp Exp $");
	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 a long long integer.
	49	*/
	50	long long
	51	wcstoll_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 strtoll 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 = neg ? (unsigned long long)-(LLONG_MIN + LLONG_MAX) + LLONG_MAX
	89	: LLONG_MAX;
	90	cutlim = cutoff % base;
	91	cutoff /= base;
	92	for ( ; ; c = *s++) {
	93	#ifdef notyet
	94	if (iswdigit_l(c, loc))
	95	c = digittoint_l(c, loc);
	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 >= L'a' && c <= L'z')
	103	c -= L'a' - 10;
	104	else
	105	break;
	106	if (c >= base)
	107	break;
	108	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
	109	any = -1;
	110	else {
	111	any = 1;
	112	acc *= base;
	113	acc += c;
	114	}
	115	}
	116	if (any < 0) {
	117	acc = neg ? LLONG_MIN : LLONG_MAX;
	118	errno = ERANGE;
	119	} else if (!any) {
	120	noconv:
	121	errno = EINVAL;
	122	} else if (neg)
	123	acc = -acc;
	124	if (endptr != NULL)
	125	endptr = (wchar_t )(any ? s - 1 : nptr);
	126	return (acc);
	127	}
	128
	129	long long
	130	wcstoll(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base)
	131	{
	132	return wcstoll_l(nptr, endptr, base, __current_locale());
	133	}