_strtoul.h revision 1.10
133965Sjdp/* $NetBSD: _strtoul.h,v 1.10 2016/11/05 21:11:30 riastradh Exp $ */ 2218822Sdim 3218822Sdim/*- 433965Sjdp * Copyright (c) 1990, 1993 533965Sjdp * The Regents of the University of California. All rights reserved. 6104834Sobrien * 733965Sjdp * Redistribution and use in source and binary forms, with or without 8104834Sobrien * modification, are permitted provided that the following conditions 9104834Sobrien * are met: 10104834Sobrien * 1. Redistributions of source code must retain the above copyright 11104834Sobrien * notice, this list of conditions and the following disclaimer. 1233965Sjdp * 2. Redistributions in binary form must reproduce the above copyright 13104834Sobrien * notice, this list of conditions and the following disclaimer in the 14104834Sobrien * documentation and/or other materials provided with the distribution. 15104834Sobrien * 3. Neither the name of the University nor the names of its contributors 16104834Sobrien * may be used to endorse or promote products derived from this software 1733965Sjdp * without specific prior written permission. 18104834Sobrien * 19104834Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20218822Sdim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2133965Sjdp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2233965Sjdp * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2333965Sjdp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2433965Sjdp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2533965Sjdp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2633965Sjdp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2733965Sjdp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2833965Sjdp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2933965Sjdp * SUCH DAMAGE. 3033965Sjdp * 3133965Sjdp * Original version ID: 3233965Sjdp * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp 3333965Sjdp */ 3433965Sjdp 3533965Sjdp/* 3633965Sjdp * function template for strtoul, strtoull and strtoumax. 3733965Sjdp * 3889857Sobrien * parameters: 3989857Sobrien * _FUNCNAME : function name 4033965Sjdp * __UINT : return type 4133965Sjdp * __UINT_MAX : upper limit of the return type 4233965Sjdp */ 4333965Sjdp#if defined(_KERNEL) || defined(_STANDALONE) || \ 4489857Sobrien defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY) 4589857Sobrien__UINT 4689857Sobrien_FUNCNAME(const char *nptr, char **endptr, int base) 4789857Sobrien#else 4889857Sobrien#include <locale.h> 4989857Sobrien#include "setlocale_local.h" 5089857Sobrien#define INT_FUNCNAME_(pre, name, post) pre ## name ## post 5189857Sobrien#define INT_FUNCNAME(pre, name, post) INT_FUNCNAME_(pre, name, post) 5289857Sobrien 5333965Sjdpstatic __UINT 5433965SjdpINT_FUNCNAME(_int_, _FUNCNAME, _l)(const char *nptr, char **endptr, 5533965Sjdp int base, locale_t loc) 5633965Sjdp#endif 5733965Sjdp{ 5833965Sjdp const char *s; 5933965Sjdp __UINT acc, cutoff; 6033965Sjdp unsigned char c; 6133965Sjdp int i, neg, any, cutlim; 6233965Sjdp 6333965Sjdp _DIAGASSERT(nptr != NULL); 6433965Sjdp /* endptr may be NULL */ 6533965Sjdp 6633965Sjdp /* check base value */ 6733965Sjdp if (base && (base < 2 || base > 36)) { 6833965Sjdp#if !defined(_KERNEL) && !defined(_STANDALONE) 69130561Sobrien errno = EINVAL; 70130561Sobrien if (endptr != NULL) 71130561Sobrien /* LINTED interface specification */ 72130561Sobrien *endptr = __UNCONST(nptr); 73130561Sobrien return 0; 74130561Sobrien#else 75130561Sobrien panic("%s: invalid base %d", __func__, base); 76130561Sobrien#endif 7733965Sjdp } 7833965Sjdp 7933965Sjdp /* 8033965Sjdp * Skip white space and pick up leading +/- sign if any. 8133965Sjdp * If base is 0, allow 0x for hex and 0 for octal, else 8233965Sjdp * assume decimal; if base is already 16, allow 0x. 8333965Sjdp */ 84130561Sobrien s = nptr; 8533965Sjdp#if defined(_KERNEL) || defined(_STANDALONE) || \ 8633965Sjdp defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY) 8733965Sjdp do { 8833965Sjdp c = *s++; 8933965Sjdp } while (isspace(c)); 9033965Sjdp#else 9133965Sjdp do { 9233965Sjdp c = *s++; 9333965Sjdp } while (isspace_l(c, loc)); 9433965Sjdp#endif 95218822Sdim if (c == '-') { 96218822Sdim neg = 1; 97218822Sdim c = *s++; 98218822Sdim } else { 99218822Sdim neg = 0; 100218822Sdim if (c == '+') 101218822Sdim c = *s++; 102218822Sdim } 103218822Sdim if ((base == 0 || base == 16) && 104218822Sdim c == '0' && (*s == 'x' || *s == 'X')) { 105218822Sdim c = s[1]; 106218822Sdim s += 2; 107218822Sdim base = 16; 108218822Sdim#if 0 109218822Sdim } else if ((base == 0 || base == 2) && 110218822Sdim c == '0' && (*s == 'b' || *s == 'B')) { 111218822Sdim c = s[1]; 112218822Sdim s += 2; 113218822Sdim base = 2; 114218822Sdim#endif 11533965Sjdp } else if (base == 0) 116218822Sdim base = (c == '0' ? 8 : 10); 11733965Sjdp 11833965Sjdp /* 11933965Sjdp * See strtol for comments as to the logic used. 12033965Sjdp */ 121218822Sdim cutoff = ((__UINT)__UINT_MAX / (__UINT)base); 122218822Sdim cutlim = (int)((__UINT)__UINT_MAX % (__UINT)base); 12333965Sjdp for (acc = 0, any = 0;; c = *s++) { 12433965Sjdp if (c >= '0' && c <= '9') 12533965Sjdp i = c - '0'; 12633965Sjdp else if (c >= 'a' && c <= 'z') 12733965Sjdp i = (c - 'a') + 10; 128218822Sdim else if (c >= 'A' && c <= 'Z') 12933965Sjdp i = (c - 'A') + 10; 13033965Sjdp else 13133965Sjdp break; 13233965Sjdp if (i >= base) 13333965Sjdp break; 13433965Sjdp if (any < 0) 135218822Sdim continue; 13633965Sjdp if (acc > cutoff || (acc == cutoff && i > cutlim)) { 137130561Sobrien acc = __UINT_MAX; 138130561Sobrien#if !defined(_KERNEL) && !defined(_STANDALONE) 139130561Sobrien any = -1; 140130561Sobrien errno = ERANGE; 141130561Sobrien#else 142130561Sobrien any = 0; 143130561Sobrien break; 144130561Sobrien#endif 14533965Sjdp } else { 14633965Sjdp any = 1; 14733965Sjdp acc *= (__UINT)base; 14833965Sjdp acc += i; 14933965Sjdp } 150218822Sdim } 15133965Sjdp if (neg && any > 0) 15233965Sjdp acc = -acc; 15333965Sjdp if (endptr != NULL) 15433965Sjdp /* LINTED interface specification */ 15533965Sjdp *endptr = __UNCONST(any ? s - 1 : nptr); 15633965Sjdp return(acc); 15733965Sjdp} 15833965Sjdp 15933965Sjdp#if !defined(_KERNEL) && !defined(_STANDALONE) && \ 16033965Sjdp !defined(HAVE_NBTOOL_CONFIG_H) && !defined(BCS_ONLY) 16133965Sjdp__UINT 16233965Sjdp_FUNCNAME(const char *nptr, char **endptr, int base) 16333965Sjdp{ 16433965Sjdp return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, _current_locale()); 16533965Sjdp} 16633965Sjdp 16733965Sjdp__UINT 16833965SjdpINT_FUNCNAME(, _FUNCNAME, _l)(const char *nptr, char **endptr, int base, locale_t loc) 16933965Sjdp{ 17033965Sjdp return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, loc); 17133965Sjdp} 172130561Sobrien#endif 17389857Sobrien