+++ /dev/null
-/* Convert string representation of a number into an integer value.
-
- Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2003, 2005,
- 2006, 2007
- Free Software Foundation, Inc.
-
- NOTE: The canonical source of this file is maintained with the GNU C
- Library. Bugs can be reported to bug-glibc@gnu.org.
-
- This program is free software: you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 3 of the License, or any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#ifdef _LIBC
-# define USE_NUMBER_GROUPING
-#else
-# include <config.h>
-#endif
-
-#include <ctype.h>
-#include <errno.h>
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
-
-#include <limits.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-
-#ifdef USE_NUMBER_GROUPING
-# include "../locale/localeinfo.h"
-#endif
-
-/* Nonzero if we are defining `strtoul' or `strtoull', operating on
- unsigned integers. */
-#ifndef UNSIGNED
-# define UNSIGNED 0
-# define INT LONG int
-#else
-# define INT unsigned LONG int
-#endif
-
-/* Determine the name. */
-#ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# if UNSIGNED
-# ifdef USE_WIDE_CHAR
-# ifdef QUAD
-# define strtol __wcstoull_l
-# else
-# define strtol __wcstoul_l
-# endif
-# else
-# ifdef QUAD
-# define strtol __strtoull_l
-# else
-# define strtol __strtoul_l
-# endif
-# endif
-# else
-# ifdef USE_WIDE_CHAR
-# ifdef QUAD
-# define strtol __wcstoll_l
-# else
-# define strtol __wcstol_l
-# endif
-# else
-# ifdef QUAD
-# define strtol __strtoll_l
-# else
-# define strtol __strtol_l
-# endif
-# endif
-# endif
-#else
-# if UNSIGNED
-# ifdef USE_WIDE_CHAR
-# ifdef QUAD
-# define strtol wcstoull
-# else
-# define strtol wcstoul
-# endif
-# else
-# ifdef QUAD
-# define strtol strtoull
-# else
-# define strtol strtoul
-# endif
-# endif
-# else
-# ifdef USE_WIDE_CHAR
-# ifdef QUAD
-# define strtol wcstoll
-# else
-# define strtol wcstol
-# endif
-# else
-# ifdef QUAD
-# define strtol strtoll
-# endif
-# endif
-# endif
-#endif
-
-/* If QUAD is defined, we are defining `strtoll' or `strtoull',
- operating on `long long int's. */
-#ifdef QUAD
-# define LONG long long
-# define STRTOL_LONG_MIN LONG_LONG_MIN
-# define STRTOL_LONG_MAX LONG_LONG_MAX
-# define STRTOL_ULONG_MAX ULONG_LONG_MAX
-
-/* The extra casts in the following macros work around compiler bugs,
- e.g., in Cray C 5.0.3.0. */
-
-/* True if negative values of the signed integer type T use two's
- complement, ones' complement, or signed magnitude representation,
- respectively. Much GNU code assumes two's complement, but some
- people like to be portable to all possible C hosts. */
-# define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1)
-# define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0)
-# define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1)
-
-/* True if the arithmetic type T is signed. */
-# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
-
-/* The maximum and minimum values for the integer type T. These
- macros have undefined behavior if T is signed and has padding bits.
- If this is a problem for you, please let us know how to fix it for
- your host. */
-# define TYPE_MINIMUM(t) \
- ((t) (! TYPE_SIGNED (t) \
- ? (t) 0 \
- : TYPE_SIGNED_MAGNITUDE (t) \
- ? ~ (t) 0 \
- : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)))
-# define TYPE_MAXIMUM(t) \
- ((t) (! TYPE_SIGNED (t) \
- ? (t) -1 \
- : ~ (~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))))
-
-# ifndef ULONG_LONG_MAX
-# define ULONG_LONG_MAX TYPE_MAXIMUM (unsigned long long)
-# endif
-# ifndef LONG_LONG_MAX
-# define LONG_LONG_MAX TYPE_MAXIMUM (long long int)
-# endif
-# ifndef LONG_LONG_MIN
-# define LONG_LONG_MIN TYPE_MINIMUM (long long int)
-# endif
-
-# if __GNUC__ == 2 && __GNUC_MINOR__ < 7
- /* Work around gcc bug with using this constant. */
- static const unsigned long long int maxquad = ULONG_LONG_MAX;
-# undef STRTOL_ULONG_MAX
-# define STRTOL_ULONG_MAX maxquad
-# endif
-#else
-# define LONG long
-# define STRTOL_LONG_MIN LONG_MIN
-# define STRTOL_LONG_MAX LONG_MAX
-# define STRTOL_ULONG_MAX ULONG_MAX
-#endif
-
-
-/* We use this code also for the extended locale handling where the
- function gets as an additional argument the locale which has to be
- used. To access the values we have to redefine the _NL_CURRENT
- macro. */
-#ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# undef _NL_CURRENT
-# define _NL_CURRENT(category, item) \
- (current->values[_NL_ITEM_INDEX (item)].string)
-# define LOCALE_PARAM , loc
-# define LOCALE_PARAM_PROTO , __locale_t loc
-#else
-# define LOCALE_PARAM
-# define LOCALE_PARAM_PROTO
-#endif
-
-#include <wchar.h>
-
-#ifdef USE_WIDE_CHAR
-# include <wctype.h>
-# define L_(Ch) L##Ch
-# define UCHAR_TYPE wint_t
-# define STRING_TYPE wchar_t
-# ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# define ISSPACE(Ch) __iswspace_l ((Ch), loc)
-# define ISALPHA(Ch) __iswalpha_l ((Ch), loc)
-# define TOUPPER(Ch) __towupper_l ((Ch), loc)
-# else
-# define ISSPACE(Ch) iswspace (Ch)
-# define ISALPHA(Ch) iswalpha (Ch)
-# define TOUPPER(Ch) towupper (Ch)
-# endif
-#else
-# define L_(Ch) Ch
-# define UCHAR_TYPE unsigned char
-# define STRING_TYPE char
-# ifdef USE_IN_EXTENDED_LOCALE_MODEL
-# define ISSPACE(Ch) __isspace_l ((Ch), loc)
-# define ISALPHA(Ch) __isalpha_l ((Ch), loc)
-# define TOUPPER(Ch) __toupper_l ((Ch), loc)
-# else
-# define ISSPACE(Ch) isspace (Ch)
-# define ISALPHA(Ch) isalpha (Ch)
-# define TOUPPER(Ch) toupper (Ch)
-# endif
-#endif
-
-#define INTERNAL(X) INTERNAL1(X)
-#define INTERNAL1(X) __##X##_internal
-#define WEAKNAME(X) WEAKNAME1(X)
-
-#ifdef USE_NUMBER_GROUPING
-/* This file defines a function to check for correct grouping. */
-# include "grouping.h"
-#endif
-
-
-
-/* Convert NPTR to an `unsigned long int' or `long int' in base BASE.
- If BASE is 0 the base is determined by the presence of a leading
- zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
- If BASE is < 2 or > 36, it is reset to 10.
- If ENDPTR is not NULL, a pointer to the character after the last
- one converted is stored in *ENDPTR. */
-
-INT
-INTERNAL (strtol) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
- int base, int group LOCALE_PARAM_PROTO)
-{
- int negative;
- register unsigned LONG int cutoff;
- register unsigned int cutlim;
- register unsigned LONG int i;
- register const STRING_TYPE *s;
- register UCHAR_TYPE c;
- const STRING_TYPE *save, *end;
- int overflow;
-
-#ifdef USE_NUMBER_GROUPING
-# ifdef USE_IN_EXTENDED_LOCALE_MODEL
- struct locale_data *current = loc->__locales[LC_NUMERIC];
-# endif
- /* The thousands character of the current locale. */
- wchar_t thousands = L'\0';
- /* The numeric grouping specification of the current locale,
- in the format described in <locale.h>. */
- const char *grouping;
-
- if (group)
- {
- grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
- if (*grouping <= 0 || *grouping == CHAR_MAX)
- grouping = NULL;
- else
- {
- /* Figure out the thousands separator character. */
-# if defined _LIBC || defined _HAVE_BTOWC
- thousands = __btowc (*_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP));
- if (thousands == WEOF)
- thousands = L'\0';
-# endif
- if (thousands == L'\0')
- grouping = NULL;
- }
- }
- else
- grouping = NULL;
-#endif
-
- if (base < 0 || base == 1 || base > 36)
- {
- __set_errno (EINVAL);
- return 0;
- }
-
- save = s = nptr;
-
- /* Skip white space. */
- while (ISSPACE (*s))
- ++s;
- if (*s == L_('\0'))
- goto noconv;
-
- /* Check for a sign. */
- if (*s == L_('-'))
- {
- negative = 1;
- ++s;
- }
- else if (*s == L_('+'))
- {
- negative = 0;
- ++s;
- }
- else
- negative = 0;
-
- /* Recognize number prefix and if BASE is zero, figure it out ourselves. */
- if (*s == L_('0'))
- {
- if ((base == 0 || base == 16) && TOUPPER (s[1]) == L_('X'))
- {
- s += 2;
- base = 16;
- }
- else if (base == 0)
- base = 8;
- }
- else if (base == 0)
- base = 10;
-
- /* Save the pointer so we can check later if anything happened. */
- save = s;
-
-#ifdef USE_NUMBER_GROUPING
- if (group)
- {
- /* Find the end of the digit string and check its grouping. */
- end = s;
- for (c = *end; c != L_('\0'); c = *++end)
- if ((wchar_t) c != thousands
- && ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
- && (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
- break;
- if (*s == thousands)
- end = s;
- else
- end = correctly_grouped_prefix (s, end, thousands, grouping);
- }
- else
-#endif
- end = NULL;
-
- cutoff = STRTOL_ULONG_MAX / (unsigned LONG int) base;
- cutlim = STRTOL_ULONG_MAX % (unsigned LONG int) base;
-
- overflow = 0;
- i = 0;
- for (c = *s; c != L_('\0'); c = *++s)
- {
- if (s == end)
- break;
- if (c >= L_('0') && c <= L_('9'))
- c -= L_('0');
- else if (ISALPHA (c))
- c = TOUPPER (c) - L_('A') + 10;
- else
- break;
- if ((int) c >= base)
- break;
- /* Check for overflow. */
- if (i > cutoff || (i == cutoff && c > cutlim))
- overflow = 1;
- else
- {
- i *= (unsigned LONG int) base;
- i += c;
- }
- }
-
- /* Check if anything actually happened. */
- if (s == save)
- goto noconv;
-
- /* Store in ENDPTR the address of one character
- past the last character we converted. */
- if (endptr != NULL)
- *endptr = (STRING_TYPE *) s;
-
-#if !UNSIGNED
- /* Check for a value that is within the range of
- `unsigned LONG int', but outside the range of `LONG int'. */
- if (overflow == 0
- && i > (negative
- ? -((unsigned LONG int) (STRTOL_LONG_MIN + 1)) + 1
- : (unsigned LONG int) STRTOL_LONG_MAX))
- overflow = 1;
-#endif
-
- if (overflow)
- {
- __set_errno (ERANGE);
-#if UNSIGNED
- return STRTOL_ULONG_MAX;
-#else
- return negative ? STRTOL_LONG_MIN : STRTOL_LONG_MAX;
-#endif
- }
-
- /* Return the result of the appropriate sign. */
- return negative ? -i : i;
-
-noconv:
- /* We must handle a special case here: the base is 0 or 16 and the
- first two characters are '0' and 'x', but the rest are no
- hexadecimal digits. This is no error case. We return 0 and
- ENDPTR points to the `x`. */
- if (endptr != NULL)
- {
- if (save - nptr >= 2 && TOUPPER (save[-1]) == L_('X')
- && save[-2] == L_('0'))
- *endptr = (STRING_TYPE *) &save[-1];
- else
- /* There was no number to convert. */
- *endptr = (STRING_TYPE *) nptr;
- }
-
- return 0L;
-}
-\f
-/* External user entry point. */
-
-
-INT
-#ifdef weak_function
-weak_function
-#endif
-strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr,
- int base LOCALE_PARAM_PROTO)
-{
- return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM);
-}
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