| | 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) |
| | 33 | static 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 | */ |
| | 50 | unsigned long long |
| | 51 | wcstoull_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) { |
| | 118 | noconv: |
| | 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 | |
| | 127 | unsigned long long |
| | 128 | wcstoull(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, |
| | 129 | int base) |
| | 130 | { |
| | 131 | return wcstoull_l(nptr, endptr, base, __current_locale()); |
| | 132 | } |
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