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) 33static char sccsid[] = "@(#)strtouq.c 8.1 (Berkeley) 6/4/93"; 34#endif /* LIBC_SCCS and not lint */ 35__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoull.c,v 1.18 2002/09/06 11:23:59 tjr Exp "); 36#endif 37__FBSDID("$FreeBSD: src/lib/libc/locale/wcstoull.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 an unsigned long long integer. 49 */ 50unsigned long long 51wcstoull_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 strtoull 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 = ULLONG_MAX / base; 89 cutlim = ULLONG_MAX % base; 90 for ( ; ; c = *s++) { 91#ifdef notyet 92 if (iswdigit_l(c, loc)) 93 c = digittoint_l(c, loc); 94 else 95#endif 96 if (c >= L'0' && c <= L'9') 97 c -= L'0'; 98 else if (c >= L'A' && c <= L'Z') 99 c -= L'A' - 10; 100 else if (c >= L'a' && c <= L'z') 101 c -= L'a' - 10; 102 else 103 break; 104 if (c >= base) 105 break; 106 if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) 107 any = -1; 108 else { 109 any = 1; 110 acc *= base; 111 acc += c; 112 } 113 } 114 if (any < 0) { 115 acc = ULLONG_MAX; 116 errno = ERANGE; 117 } else if (!any) { 118noconv: 119 errno = EINVAL; 120 } else if (neg) 121 acc = -acc; 122 if (endptr != NULL) 123 *endptr = (wchar_t *)(any ? s - 1 : nptr); 124 return (acc); 125} 126 127unsigned long long 128wcstoull(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, 129 int base) 130{ 131 return wcstoull_l(nptr, endptr, base, __current_locale()); 132} 133