| 1 | /* Convert string representation of a number into an integer value.
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| 2 | Copyright (C) 1991, 92, 94, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
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| 3 | NOTE: The canonical source of this file is maintained with the GNU C
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| 4 | Library. Bugs can be reported to [email protected].
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify it
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| 7 | under the terms of the GNU General Public License as published by the
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| 8 | Free Software Foundation; either version 2, or (at your option) any
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| 9 | later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software Foundation,
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| 18 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 19 |
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| 20 | #if HAVE_CONFIG_H
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| 21 | # include <config.h>
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| 22 | #endif
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| 23 |
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| 24 | #ifdef _LIBC
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| 25 | # define USE_NUMBER_GROUPING
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| 26 | # define STDC_HEADERS
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| 27 | # define HAVE_LIMITS_H
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| 28 | #endif
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| 29 |
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| 30 | #include <ctype.h>
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| 31 | #include <errno.h>
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| 32 | #ifndef errno
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| 33 | extern int errno;
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| 34 | #endif
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| 35 | #ifndef __set_errno
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| 36 | # define __set_errno(Val) errno = (Val)
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| 37 | #endif
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| 38 |
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| 39 | #ifdef HAVE_LIMITS_H
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| 40 | # include <limits.h>
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| 41 | #endif
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| 42 |
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| 43 | #ifdef STDC_HEADERS
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| 44 | # include <stddef.h>
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| 45 | # include <stdlib.h>
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| 46 | # include <string.h>
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| 47 | #else
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| 48 | # ifndef NULL
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| 49 | # define NULL 0
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| 50 | # endif
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| 51 | #endif
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| 52 |
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| 53 | #ifdef USE_NUMBER_GROUPING
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| 54 | # include "../locale/localeinfo.h"
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| 55 | #endif
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| 56 |
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| 57 | /* Nonzero if we are defining `strtoul' or `strtoull', operating on
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| 58 | unsigned integers. */
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| 59 | #ifndef UNSIGNED
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| 60 | # define UNSIGNED 0
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| 61 | # define INT LONG int
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| 62 | #else
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| 63 | # define INT unsigned LONG int
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| 64 | #endif
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| 65 |
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| 66 | /* Determine the name. */
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| 67 | #ifdef USE_IN_EXTENDED_LOCALE_MODEL
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| 68 | # if UNSIGNED
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| 69 | # ifdef USE_WIDE_CHAR
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| 70 | # ifdef QUAD
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| 71 | # define strtol __wcstoull_l
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| 72 | # else
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| 73 | # define strtol __wcstoul_l
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| 74 | # endif
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| 75 | # else
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| 76 | # ifdef QUAD
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| 77 | # define strtol __strtoull_l
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| 78 | # else
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| 79 | # define strtol __strtoul_l
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| 80 | # endif
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| 81 | # endif
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| 82 | # else
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| 83 | # ifdef USE_WIDE_CHAR
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| 84 | # ifdef QUAD
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| 85 | # define strtol __wcstoll_l
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| 86 | # else
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| 87 | # define strtol __wcstol_l
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| 88 | # endif
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| 89 | # else
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| 90 | # ifdef QUAD
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| 91 | # define strtol __strtoll_l
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| 92 | # else
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| 93 | # define strtol __strtol_l
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| 94 | # endif
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| 95 | # endif
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| 96 | # endif
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| 97 | #else
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| 98 | # if UNSIGNED
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| 99 | # ifdef USE_WIDE_CHAR
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| 100 | # ifdef QUAD
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| 101 | # define strtol wcstoull
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| 102 | # else
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| 103 | # define strtol wcstoul
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| 104 | # endif
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| 105 | # else
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| 106 | # ifdef QUAD
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| 107 | # define strtol strtoull
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| 108 | # else
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| 109 | # define strtol strtoul
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| 110 | # endif
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| 111 | # endif
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| 112 | # else
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| 113 | # ifdef USE_WIDE_CHAR
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| 114 | # ifdef QUAD
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| 115 | # define strtol wcstoll
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| 116 | # else
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| 117 | # define strtol wcstol
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| 118 | # endif
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| 119 | # else
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| 120 | # ifdef QUAD
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| 121 | # define strtol strtoll
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| 122 | # endif
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| 123 | # endif
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| 124 | # endif
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| 125 | #endif
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| 126 |
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| 127 | /* If QUAD is defined, we are defining `strtoll' or `strtoull',
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| 128 | operating on `long long int's. */
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| 129 | #ifdef QUAD
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| 130 | # define LONG long long
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| 131 | # define STRTOL_LONG_MIN LONG_LONG_MIN
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| 132 | # define STRTOL_LONG_MAX LONG_LONG_MAX
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| 133 | # define STRTOL_ULONG_MAX ULONG_LONG_MAX
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| 134 |
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| 135 | /* The extra casts work around common compiler bugs,
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| 136 | e.g. Cray C 5.0.3.0 when t == time_t. */
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| 137 | # ifndef TYPE_SIGNED
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| 138 | # define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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| 139 | # endif
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| 140 | # ifndef TYPE_MINIMUM
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| 141 | # define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
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| 142 | ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
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| 143 | : (t) 0))
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| 144 | # endif
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| 145 | # ifndef TYPE_MAXIMUM
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| 146 | # define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
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| 147 | # endif
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| 148 |
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| 149 | # ifndef ULONG_LONG_MAX
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| 150 | # define ULONG_LONG_MAX TYPE_MAXIMUM (unsigned long long)
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| 151 | # endif
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| 152 | # ifndef LONG_LONG_MAX
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| 153 | # define LONG_LONG_MAX TYPE_MAXIMUM (long long int)
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| 154 | # endif
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| 155 | # ifndef LONG_LONG_MIN
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| 156 | # define LONG_LONG_MIN TYPE_MINIMUM (long long int)
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| 157 | # endif
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| 158 |
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| 159 | # if __GNUC__ == 2 && __GNUC_MINOR__ < 7
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| 160 | /* Work around gcc bug with using this constant. */
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| 161 | static const unsigned long long int maxquad = ULONG_LONG_MAX;
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| 162 | # undef STRTOL_ULONG_MAX
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| 163 | # define STRTOL_ULONG_MAX maxquad
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| 164 | # endif
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| 165 | #else
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| 166 | # define LONG long
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| 167 |
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| 168 | # ifndef ULONG_MAX
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| 169 | # define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
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| 170 | # endif
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| 171 | # ifndef LONG_MAX
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| 172 | # define LONG_MAX ((long int) (ULONG_MAX >> 1))
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| 173 | # endif
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| 174 | # define STRTOL_LONG_MIN LONG_MIN
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| 175 | # define STRTOL_LONG_MAX LONG_MAX
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| 176 | # define STRTOL_ULONG_MAX ULONG_MAX
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| 177 | #endif
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| 178 |
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| 179 |
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| 180 | /* We use this code also for the extended locale handling where the
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| 181 | function gets as an additional argument the locale which has to be
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| 182 | used. To access the values we have to redefine the _NL_CURRENT
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| 183 | macro. */
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| 184 | #ifdef USE_IN_EXTENDED_LOCALE_MODEL
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| 185 | # undef _NL_CURRENT
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| 186 | # define _NL_CURRENT(category, item) \
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| 187 | (current->values[_NL_ITEM_INDEX (item)].string)
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| 188 | # define LOCALE_PARAM , loc
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| 189 | # define LOCALE_PARAM_DECL __locale_t loc;
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| 190 | #else
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| 191 | # define LOCALE_PARAM
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| 192 | # define LOCALE_PARAM_DECL
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| 193 | #endif
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| 194 |
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| 195 | #if defined _LIBC || defined HAVE_WCHAR_H
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| 196 | # include <wchar.h>
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| 197 | #endif
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| 198 |
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| 199 | #ifdef USE_WIDE_CHAR
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| 200 | # include <wctype.h>
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| 201 | # define L_(Ch) L##Ch
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| 202 | # define UCHAR_TYPE wint_t
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| 203 | # define STRING_TYPE wchar_t
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| 204 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL
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| 205 | # define ISSPACE(Ch) __iswspace_l ((Ch), loc)
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| 206 | # define ISALPHA(Ch) __iswalpha_l ((Ch), loc)
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| 207 | # define TOUPPER(Ch) __towupper_l ((Ch), loc)
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| 208 | # else
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| 209 | # define ISSPACE(Ch) iswspace (Ch)
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| 210 | # define ISALPHA(Ch) iswalpha (Ch)
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| 211 | # define TOUPPER(Ch) towupper (Ch)
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| 212 | # endif
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| 213 | #else
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| 214 | # if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
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| 215 | # define IN_CTYPE_DOMAIN(c) 1
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| 216 | # else
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| 217 | # define IN_CTYPE_DOMAIN(c) isascii(c)
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| 218 | # endif
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| 219 | # define L_(Ch) Ch
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| 220 | # define UCHAR_TYPE unsigned char
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| 221 | # define STRING_TYPE char
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| 222 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL
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| 223 | # define ISSPACE(Ch) __isspace_l ((Ch), loc)
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| 224 | # define ISALPHA(Ch) __isalpha_l ((Ch), loc)
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| 225 | # define TOUPPER(Ch) __toupper_l ((Ch), loc)
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| 226 | # else
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| 227 | # define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch))
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| 228 | # define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
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| 229 | # define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch))
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| 230 | # endif
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| 231 | #endif
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| 232 |
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| 233 | /* For compilers which are ansi but don't define __STDC__, like SGI
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| 234 | Irix-4.0.5 cc, also check whether PROTOTYPES is defined. */
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| 235 | #if defined (__STDC__) || defined (PROTOTYPES)
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| 236 | # define INTERNAL(X) INTERNAL1(X)
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| 237 | # define INTERNAL1(X) __##X##_internal
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| 238 | # define WEAKNAME(X) WEAKNAME1(X)
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| 239 | #else
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| 240 | # define INTERNAL(X) __/**/X/**/_internal
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| 241 | #endif
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| 242 |
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| 243 | #ifdef USE_NUMBER_GROUPING
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| 244 | /* This file defines a function to check for correct grouping. */
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| 245 | # include "grouping.h"
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| 246 | #endif
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| 247 |
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| 248 |
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| 249 |
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| 250 | /* Convert NPTR to an `unsigned long int' or `long int' in base BASE.
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| 251 | If BASE is 0 the base is determined by the presence of a leading
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| 252 | zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
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| 253 | If BASE is < 2 or > 36, it is reset to 10.
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| 254 | If ENDPTR is not NULL, a pointer to the character after the last
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| 255 | one converted is stored in *ENDPTR. */
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| 256 |
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| 257 | INT
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| 258 | INTERNAL (strtol) (nptr, endptr, base, group LOCALE_PARAM)
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| 259 | const STRING_TYPE *nptr;
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| 260 | STRING_TYPE **endptr;
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| 261 | int base;
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| 262 | int group;
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| 263 | LOCALE_PARAM_DECL
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| 264 | {
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| 265 | int negative;
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| 266 | register unsigned LONG int cutoff;
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| 267 | register unsigned int cutlim;
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| 268 | register unsigned LONG int i;
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| 269 | register const STRING_TYPE *s;
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| 270 | register UCHAR_TYPE c;
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| 271 | const STRING_TYPE *save, *end;
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| 272 | int overflow;
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| 273 |
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| 274 | #ifdef USE_NUMBER_GROUPING
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| 275 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL
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| 276 | struct locale_data *current = loc->__locales[LC_NUMERIC];
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| 277 | # endif
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| 278 | /* The thousands character of the current locale. */
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| 279 | wchar_t thousands = L'\0';
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| 280 | /* The numeric grouping specification of the current locale,
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| 281 | in the format described in <locale.h>. */
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| 282 | const char *grouping;
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| 283 |
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| 284 | if (group)
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| 285 | {
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| 286 | grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
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| 287 | if (*grouping <= 0 || *grouping == CHAR_MAX)
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| 288 | grouping = NULL;
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| 289 | else
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| 290 | {
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| 291 | /* Figure out the thousands separator character. */
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| 292 | # if defined _LIBC || defined _HAVE_BTOWC
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| 293 | thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
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| 294 | if (thousands == WEOF)
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| 295 | thousands = L'\0';
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| 296 | # endif
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| 297 | if (thousands == L'\0')
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| 298 | grouping = NULL;
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| 299 | }
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| 300 | }
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| 301 | else
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| 302 | grouping = NULL;
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| 303 | #endif
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| 304 |
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| 305 | if (base < 0 || base == 1 || base > 36)
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| 306 | {
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| 307 | __set_errno (EINVAL);
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| 308 | return 0;
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| 309 | }
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| 310 |
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| 311 | save = s = nptr;
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| 312 |
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| 313 | /* Skip white space. */
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| 314 | while (ISSPACE (*s))
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| 315 | ++s;
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| 316 | if (*s == L_('\0'))
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| 317 | goto noconv;
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| 318 |
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| 319 | /* Check for a sign. */
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| 320 | if (*s == L_('-'))
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| 321 | {
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| 322 | negative = 1;
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| 323 | ++s;
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| 324 | }
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| 325 | else if (*s == L_('+'))
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