8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
134 lines
3.8 KiB
C
134 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)strtouq.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <limits.h>
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#include <errno.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "xlocale_private.h"
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/*
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* Convert a string to an unsigned long long integer.
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*
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* Assumes that the upper and lower case
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* alphabets and digits are each contiguous.
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*/
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unsigned long long
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strtoull_l(const char * __restrict nptr, char ** __restrict endptr, int base,
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locale_t locale)
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{
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const char *s;
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unsigned long long acc;
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char c;
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unsigned long long cutoff;
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int neg, any, cutlim;
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FIX_LOCALE(locale);
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/*
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* See strtoq for comments as to the logic used.
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*/
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s = nptr;
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do {
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c = *s++;
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} while (isspace_l((unsigned char)c, locale));
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if (c == '-') {
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neg = 1;
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c = *s++;
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} else {
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neg = 0;
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if (c == '+')
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c = *s++;
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}
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if ((base == 0 || base == 16) &&
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c == '0' && (*s == 'x' || *s == 'X') &&
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((s[1] >= '0' && s[1] <= '9') ||
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(s[1] >= 'A' && s[1] <= 'F') ||
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(s[1] >= 'a' && s[1] <= 'f'))) {
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c = s[1];
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s += 2;
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base = 16;
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}
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if (base == 0)
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base = c == '0' ? 8 : 10;
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acc = any = 0;
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if (base < 2 || base > 36)
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goto noconv;
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cutoff = ULLONG_MAX / base;
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cutlim = ULLONG_MAX % base;
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for ( ; ; c = *s++) {
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if (c >= '0' && c <= '9')
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c -= '0';
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else if (c >= 'A' && c <= 'Z')
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c -= 'A' - 10;
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else if (c >= 'a' && c <= 'z')
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c -= 'a' - 10;
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else
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break;
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if (c >= base)
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break;
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if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
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any = -1;
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else {
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any = 1;
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acc *= base;
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acc += c;
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}
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}
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if (any < 0) {
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acc = ULLONG_MAX;
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errno = ERANGE;
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} else if (!any) {
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noconv:
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errno = EINVAL;
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} else if (neg)
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acc = -acc;
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if (endptr != NULL)
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*endptr = (char *)(any ? s - 1 : nptr);
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return (acc);
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}
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unsigned long long
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strtoull(const char * __restrict nptr, char ** __restrict endptr, int base)
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{
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return strtoull_l(nptr, endptr, base, __get_locale());
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}
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