1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Copyright (c) 2011 The FreeBSD Foundation 8 * 9 * Portions of this software were developed by David Chisnall 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #if 0 38 #if defined(LIBC_SCCS) && !defined(lint) 39 static char sccsid[] = "@(#)strtoq.c 8.1 (Berkeley) 6/4/93"; 40 #endif /* LIBC_SCCS and not lint */ 41 __FBSDID("FreeBSD: src/lib/libc/stdlib/strtoll.c,v 1.19 2002/09/06 11:23:59 tjr Exp "); 42 #endif 43 #include <errno.h> 44 #include <limits.h> 45 #include <stdlib.h> 46 #include <wchar.h> 47 #include <wctype.h> 48 #include "xlocale_private.h" 49 50 /* 51 * Convert a wide character string to a long long integer. 52 */ 53 long long 54 wcstoll_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, 55 int base, locale_t locale) 56 { 57 const wchar_t *s; 58 unsigned long long acc; 59 wchar_t c; 60 unsigned long long cutoff; 61 int neg, any, cutlim; 62 FIX_LOCALE(locale); 63 64 /* 65 * See strtoll for comments as to the logic used. 66 */ 67 s = nptr; 68 do { 69 c = *s++; 70 } while (iswspace_l(c, locale)); 71 if (c == L'-') { 72 neg = 1; 73 c = *s++; 74 } else { 75 neg = 0; 76 if (c == L'+') 77 c = *s++; 78 } 79 if ((base == 0 || base == 16) && 80 c == L'0' && (*s == L'x' || *s == L'X') && 81 ((s[1] >= L'0' && s[1] <= L'9') || 82 (s[1] >= L'A' && s[1] <= L'F') || 83 (s[1] >= L'a' && s[1] <= L'f'))) { 84 c = s[1]; 85 s += 2; 86 base = 16; 87 } 88 if ((base == 0 || base == 2) && 89 c == L'0' && (*s == L'b' || *s == L'B') && 90 (s[1] >= L'0' && s[1] <= L'1')) { 91 c = s[1]; 92 s += 2; 93 base = 2; 94 } 95 if (base == 0) 96 base = c == L'0' ? 8 : 10; 97 acc = any = 0; 98 if (base < 2 || base > 36) 99 goto noconv; 100 101 cutoff = neg ? (unsigned long long)-(LLONG_MIN + LLONG_MAX) + LLONG_MAX 102 : LLONG_MAX; 103 cutlim = cutoff % base; 104 cutoff /= base; 105 for ( ; ; c = *s++) { 106 #ifdef notyet 107 if (iswdigit_l(c, locale)) 108 c = digittoint_l(c, locale); 109 else 110 #endif 111 if (c >= L'0' && c <= L'9') 112 c -= L'0'; 113 else if (c >= L'A' && c <= L'Z') 114 c -= L'A' - 10; 115 else if (c >= L'a' && c <= L'z') 116 c -= L'a' - 10; 117 else 118 break; 119 if (c >= base) 120 break; 121 if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) 122 any = -1; 123 else { 124 any = 1; 125 acc *= base; 126 acc += c; 127 } 128 } 129 if (any < 0) { 130 acc = neg ? LLONG_MIN : LLONG_MAX; 131 errno = ERANGE; 132 } else if (!any) { 133 noconv: 134 errno = EINVAL; 135 } else if (neg) 136 acc = -acc; 137 if (endptr != NULL) 138 *endptr = (wchar_t *)(any ? s - 1 : nptr); 139 return (acc); 140 } 141 long long 142 wcstoll(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, int base) 143 { 144 return wcstoll_l(nptr, endptr, base, __get_locale()); 145 } 146