[apple/libc.git] / locale / wcstoimax-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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 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 1.2 2003/01/01 18:48:43 schweikh 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
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.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#include <sys/cdefs.h>
	35	#if 0
	36	#if defined(LIBC_SCCS) && !defined(lint)
	37	static char sccsid[] = "from @(#)strtol.c 8.1 (Berkeley) 6/4/93";
	38	#endif /* LIBC_SCCS and not lint */
	39	__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoimax.c,v 1.8 2002/09/06 11:23:59 tjr Exp ");
	40	#endif
	41	__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoimax.c,v 1.2 2003/01/01 18:48:43 schweikh Exp $");
	42
	43	#include "xlocale_private.h"
	44
	45	#include <errno.h>
	46	#include <inttypes.h>
	47	#include <stdlib.h>
	48	#include <wchar.h>
	49	#include <wctype.h>
	50
	51	/*
	52	* Convert a wide character string to an intmax_t integer.
	53	*/
	54	intmax_t
	55	wcstoimax_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
	56	int base, locale_t loc)
	57	{
	58	const wchar_t *s;
	59	uintmax_t acc;
	60	wchar_t c;
	61	uintmax_t cutoff;
	62	int neg, any, cutlim;
	63
	64	NORMALIZE_LOCALE(loc);
65	/*
66	* See strtoimax for comments as to the logic used.
67	*/
68	s = nptr;
69	do {
70	c = *s++;
71	} while (iswspace_l(c, loc));
72	if (c == L'-') {
73	neg = 1;
74	c = *s++;
75	} else {
76	neg = 0;
77	if (c == L'+')
78	c = *s++;
79	}
80	if ((base == 0 \|\| base == 16) &&
81	c == L'0' && (s == L'x' \|\| s == L'X')) {
82	c = s[1];
83	s += 2;
84	base = 16;
85	}
86	if (base == 0)
87	base = c == L'0' ? 8 : 10;
88	acc = any = 0;
89	if (base < 2 \|\| base > 36)
90	goto noconv;
91
92	cutoff = neg ? (uintmax_t)-(INTMAX_MIN + INTMAX_MAX) + INTMAX_MAX
93	: INTMAX_MAX;
94	cutlim = cutoff % base;
95	cutoff /= base;
96	for ( ; ; c = *s++) {
97	#ifdef notyet
98	if (iswdigit_l(c, loc))
99	c = digittoint_l(c, loc);
100	else
101	#endif
102	if (c >= L'0' && c <= L'9')
103	c -= L'0';
104	else if (c >= L'A' && c <= L'Z')
105	c -= L'A' - 10;
106	else if (c >= 'a' && c <= 'z')
107	c -= L'a' - 10;
108	else
109	break;
110	if (c >= base)
111	break;
112	if (any < 0 \|\| acc > cutoff \|\| (acc == cutoff && c > cutlim))
113	any = -1;
114	else {
115	any = 1;
116	acc *= base;
117	acc += c;
118	}
119	}
120	if (any < 0) {
121	acc = neg ? INTMAX_MIN : INTMAX_MAX;
122	errno = ERANGE;
123	} else if (!any) {
124	noconv:
125	errno = EINVAL;
126	} else if (neg)
127	acc = -acc;
128	if (endptr != NULL)
129	endptr = (wchar_t )(any ? s - 1 : nptr);
130	return (acc);
131	}
132
133	intmax_t
134	wcstoimax(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
135	int base)
136	{
137	return wcstoimax_l(nptr, endptr, base, __current_locale());
138	}