wcstoul.c revision 1.1.2.2
1 1.1.2.2 nathanw /* $NetBSD: wcstoul.c,v 1.1.2.2 2001/10/08 20:19:59 nathanw Exp $ */ 2 1.1.2.2 nathanw /* $Citrus: xpg4dl/FreeBSD/lib/libc/locale/wcstoul.c,v 1.2 2001/09/21 16:11:41 yamt Exp $ */ 3 1.1.2.2 nathanw 4 1.1.2.2 nathanw /* 5 1.1.2.2 nathanw * Copyright (c) 1990, 1993 6 1.1.2.2 nathanw * The Regents of the University of California. All rights reserved. 7 1.1.2.2 nathanw * 8 1.1.2.2 nathanw * Redistribution and use in source and binary forms, with or without 9 1.1.2.2 nathanw * modification, are permitted provided that the following conditions 10 1.1.2.2 nathanw * are met: 11 1.1.2.2 nathanw * 1. Redistributions of source code must retain the above copyright 12 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer. 13 1.1.2.2 nathanw * 2. Redistributions in binary form must reproduce the above copyright 14 1.1.2.2 nathanw * notice, this list of conditions and the following disclaimer in the 15 1.1.2.2 nathanw * documentation and/or other materials provided with the distribution. 16 1.1.2.2 nathanw * 3. All advertising materials mentioning features or use of this software 17 1.1.2.2 nathanw * must display the following acknowledgement: 18 1.1.2.2 nathanw * This product includes software developed by the University of 19 1.1.2.2 nathanw * California, Berkeley and its contributors. 20 1.1.2.2 nathanw * 4. Neither the name of the University nor the names of its contributors 21 1.1.2.2 nathanw * may be used to endorse or promote products derived from this software 22 1.1.2.2 nathanw * without specific prior written permission. 23 1.1.2.2 nathanw * 24 1.1.2.2 nathanw * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.1.2.2 nathanw * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.1.2.2 nathanw * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.1.2.2 nathanw * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.1.2.2 nathanw * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.1.2.2 nathanw * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.1.2.2 nathanw * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.1.2.2 nathanw * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.1.2.2 nathanw * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.1.2.2 nathanw * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.1.2.2 nathanw * SUCH DAMAGE. 35 1.1.2.2 nathanw */ 36 1.1.2.2 nathanw 37 1.1.2.2 nathanw #include <sys/cdefs.h> 38 1.1.2.2 nathanw #if defined(LIBC_SCCS) && !defined(lint) 39 1.1.2.2 nathanw #if 0 40 1.1.2.2 nathanw static char sccsid[] = "@(#)strtoul.c 8.1 (Berkeley) 6/4/93"; 41 1.1.2.2 nathanw #else 42 1.1.2.2 nathanw __RCSID("$NetBSD: wcstoul.c,v 1.1.2.2 2001/10/08 20:19:59 nathanw Exp $"); 43 1.1.2.2 nathanw #endif 44 1.1.2.2 nathanw #endif /* LIBC_SCCS and not lint */ 45 1.1.2.2 nathanw 46 1.1.2.2 nathanw #include <assert.h> 47 1.1.2.2 nathanw #include <ctype.h> 48 1.1.2.2 nathanw #include <errno.h> 49 1.1.2.2 nathanw #include <limits.h> 50 1.1.2.2 nathanw #include <stdlib.h> 51 1.1.2.2 nathanw #include <wchar.h> 52 1.1.2.2 nathanw #include <wctype.h> 53 1.1.2.2 nathanw 54 1.1.2.2 nathanw #include "__wctoint.h" 55 1.1.2.2 nathanw 56 1.1.2.2 nathanw /* 57 1.1.2.2 nathanw * Convert a wide-char string to an unsigned long integer. 58 1.1.2.2 nathanw */ 59 1.1.2.2 nathanw unsigned long 60 1.1.2.2 nathanw wcstoul(nptr, endptr, base) 61 1.1.2.2 nathanw const wchar_t *nptr; 62 1.1.2.2 nathanw wchar_t **endptr; 63 1.1.2.2 nathanw int base; 64 1.1.2.2 nathanw { 65 1.1.2.2 nathanw const wchar_t *s; 66 1.1.2.2 nathanw unsigned long acc, cutoff; 67 1.1.2.2 nathanw wint_t wc; 68 1.1.2.2 nathanw int i; 69 1.1.2.2 nathanw int neg, any, cutlim; 70 1.1.2.2 nathanw 71 1.1.2.2 nathanw _DIAGASSERT(nptr != NULL); 72 1.1.2.2 nathanw /* endptr may be NULL */ 73 1.1.2.2 nathanw 74 1.1.2.2 nathanw /* check base value */ 75 1.1.2.2 nathanw if (base && (base < 2 || base > 36)) { 76 1.1.2.2 nathanw errno = EINVAL; 77 1.1.2.2 nathanw return 0; 78 1.1.2.2 nathanw } 79 1.1.2.2 nathanw 80 1.1.2.2 nathanw /* 81 1.1.2.2 nathanw * See strtol for comments as to the logic used. 82 1.1.2.2 nathanw */ 83 1.1.2.2 nathanw s = nptr; 84 1.1.2.2 nathanw do { 85 1.1.2.2 nathanw wc = (wchar_t) *s++; 86 1.1.2.2 nathanw } while (iswspace(wc)); 87 1.1.2.2 nathanw if (wc == L'-') { 88 1.1.2.2 nathanw neg = 1; 89 1.1.2.2 nathanw wc = *s++; 90 1.1.2.2 nathanw } else { 91 1.1.2.2 nathanw neg = 0; 92 1.1.2.2 nathanw if (wc == L'+') 93 1.1.2.2 nathanw wc = *s++; 94 1.1.2.2 nathanw } 95 1.1.2.2 nathanw if ((base == 0 || base == 16) && 96 1.1.2.2 nathanw wc == L'0' && (*s == L'x' || *s == L'X')) { 97 1.1.2.2 nathanw wc = s[1]; 98 1.1.2.2 nathanw s += 2; 99 1.1.2.2 nathanw base = 16; 100 1.1.2.2 nathanw } 101 1.1.2.2 nathanw if (base == 0) 102 1.1.2.2 nathanw base = wc == L'0' ? 8 : 10; 103 1.1.2.2 nathanw 104 1.1.2.2 nathanw cutoff = ULONG_MAX / (unsigned long)base; 105 1.1.2.2 nathanw cutlim = (int)(ULONG_MAX % (unsigned long)base); 106 1.1.2.2 nathanw for (acc = 0, any = 0;; wc = (wchar_t) *s++) { 107 1.1.2.2 nathanw i = __wctoint(wc); 108 1.1.2.2 nathanw if (i == (wint_t)-1) 109 1.1.2.2 nathanw break; 110 1.1.2.2 nathanw if (i >= base) 111 1.1.2.2 nathanw break; 112 1.1.2.2 nathanw if (any < 0) 113 1.1.2.2 nathanw continue; 114 1.1.2.2 nathanw if (acc > cutoff || (acc == cutoff && i > cutlim)) { 115 1.1.2.2 nathanw any = -1; 116 1.1.2.2 nathanw acc = ULONG_MAX; 117 1.1.2.2 nathanw errno = ERANGE; 118 1.1.2.2 nathanw } else { 119 1.1.2.2 nathanw any = 1; 120 1.1.2.2 nathanw acc *= (unsigned long)base; 121 1.1.2.2 nathanw acc += i; 122 1.1.2.2 nathanw } 123 1.1.2.2 nathanw } 124 1.1.2.2 nathanw if (neg && any > 0) 125 1.1.2.2 nathanw acc = -acc; 126 1.1.2.2 nathanw if (endptr != 0) 127 1.1.2.2 nathanw /* LINTED interface specification */ 128 1.1.2.2 nathanw *endptr = (wchar_t *)(any ? s - 1 : nptr); 129 1.1.2.2 nathanw return (acc); 130 1.1.2.2 nathanw } 131
Indexes created Sun Oct 12 20:09:57 GMT 2025