187027Sfenner/*- 287027Sfenner * Copyright (c) 1992, 1993 387027Sfenner * The Regents of the University of California. All rights reserved. 487027Sfenner * 5227753Stheraven * Copyright (c) 2011 The FreeBSD Foundation 6227753Stheraven * All rights reserved. 7227753Stheraven * Portions of this software were developed by David Chisnall 8227753Stheraven * under sponsorship from the FreeBSD Foundation. 9227753Stheraven * 1087027Sfenner * Redistribution and use in source and binary forms, with or without 1187027Sfenner * modification, are permitted provided that the following conditions 1287027Sfenner * are met: 1387027Sfenner * 1. Redistributions of source code must retain the above copyright 1487027Sfenner * notice, this list of conditions and the following disclaimer. 1587027Sfenner * 2. Redistributions in binary form must reproduce the above copyright 1687027Sfenner * notice, this list of conditions and the following disclaimer in the 1787027Sfenner * documentation and/or other materials provided with the distribution. 18251672Semaste * 3. Neither the name of the University nor the names of its contributors 1987027Sfenner * may be used to endorse or promote products derived from this software 2087027Sfenner * without specific prior written permission. 2187027Sfenner * 2287027Sfenner * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2387027Sfenner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2487027Sfenner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2587027Sfenner * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2687027Sfenner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2787027Sfenner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2887027Sfenner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2987027Sfenner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3087027Sfenner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3187027Sfenner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3287027Sfenner * SUCH DAMAGE. 3387027Sfenner */ 3487027Sfenner 3587027Sfenner#if defined(LIBC_SCCS) && !defined(lint) 3687027Sfennerstatic char sccsid[] = "from @(#)strtoul.c 8.1 (Berkeley) 6/4/93"; 3787027Sfenner#endif /* LIBC_SCCS and not lint */ 3892986Sobrien#include <sys/cdefs.h> 3992986Sobrien__FBSDID("$FreeBSD$"); 4087027Sfenner 4187027Sfenner#include <ctype.h> 4287027Sfenner#include <errno.h> 4387027Sfenner#include <stdlib.h> 4487027Sfenner#include <inttypes.h> 45227753Stheraven#include "xlocale_private.h" 4687027Sfenner 4787027Sfenner/* 4887027Sfenner * Convert a string to a uintmax_t integer. 4987027Sfenner * 5087027Sfenner * Assumes that the upper and lower case 5187027Sfenner * alphabets and digits are each contiguous. 5287027Sfenner */ 5387027Sfenneruintmax_t 54227753Stheravenstrtoumax_l(const char * __restrict nptr, char ** __restrict endptr, int base, 55227753Stheraven locale_t locale) 5687027Sfenner{ 5787027Sfenner const char *s; 5887027Sfenner uintmax_t acc; 5987494Sache char c; 6087027Sfenner uintmax_t cutoff; 6187494Sache int neg, any, cutlim; 62227753Stheraven FIX_LOCALE(locale); 6387027Sfenner 6487027Sfenner /* 6587027Sfenner * See strtoimax for comments as to the logic used. 6687027Sfenner */ 6787027Sfenner s = nptr; 6887027Sfenner do { 6987027Sfenner c = *s++; 70227753Stheraven } while (isspace_l((unsigned char)c, locale)); 7187027Sfenner if (c == '-') { 7287027Sfenner neg = 1; 7387027Sfenner c = *s++; 7487027Sfenner } else { 7587027Sfenner neg = 0; 7687027Sfenner if (c == '+') 7787027Sfenner c = *s++; 7887027Sfenner } 7987027Sfenner if ((base == 0 || base == 16) && 80140536Sache c == '0' && (*s == 'x' || *s == 'X') && 81140577Sache ((s[1] >= '0' && s[1] <= '9') || 82140577Sache (s[1] >= 'A' && s[1] <= 'F') || 83140577Sache (s[1] >= 'a' && s[1] <= 'f'))) { 8487027Sfenner c = s[1]; 8587027Sfenner s += 2; 8687027Sfenner base = 16; 8787027Sfenner } 8887027Sfenner if (base == 0) 8987027Sfenner base = c == '0' ? 8 : 10; 9087027Sfenner acc = any = 0; 9187027Sfenner if (base < 2 || base > 36) 9287027Sfenner goto noconv; 9387027Sfenner 9487027Sfenner cutoff = UINTMAX_MAX / base; 9587027Sfenner cutlim = UINTMAX_MAX % base; 9687027Sfenner for ( ; ; c = *s++) { 9787494Sache if (c >= '0' && c <= '9') 9887494Sache c -= '0'; 9987494Sache else if (c >= 'A' && c <= 'Z') 10087494Sache c -= 'A' - 10; 10187494Sache else if (c >= 'a' && c <= 'z') 10287494Sache c -= 'a' - 10; 10387027Sfenner else 10487027Sfenner break; 10587494Sache if (c >= base) 10687027Sfenner break; 10787494Sache if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) 10887027Sfenner any = -1; 10987027Sfenner else { 11087027Sfenner any = 1; 11187027Sfenner acc *= base; 11287494Sache acc += c; 11387027Sfenner } 11487027Sfenner } 11587027Sfenner if (any < 0) { 11687027Sfenner acc = UINTMAX_MAX; 11787027Sfenner errno = ERANGE; 11887027Sfenner } else if (!any) { 11987027Sfennernoconv: 12087027Sfenner errno = EINVAL; 12187027Sfenner } else if (neg) 12287027Sfenner acc = -acc; 12387027Sfenner if (endptr != NULL) 12487027Sfenner *endptr = (char *)(any ? s - 1 : nptr); 12587027Sfenner return (acc); 12687027Sfenner} 127227753Stheravenuintmax_t 128227753Stheravenstrtoumax(const char * __restrict nptr, char ** __restrict endptr, int base) 129227753Stheraven{ 130227753Stheraven return strtoumax_l(nptr, endptr, base, __get_locale()); 131227753Stheraven} 132