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/* Convert string representation of a number into an integer value.
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Copyright (C) 1991, 92, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
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NOTE: The canonical source of this file is maintained with the GNU C Library.
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Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#ifdef _LIBC
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# define USE_NUMBER_GROUPING
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# define STDC_HEADERS
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# define HAVE_LIMITS_H
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#endif
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#include <ctype.h>
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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#ifndef __set_errno
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# define __set_errno(Val) errno = (Val)
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#endif
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#ifdef HAVE_LIMITS_H
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# include <limits.h>
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#endif
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#ifdef STDC_HEADERS
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# include <stddef.h>
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# include <stdlib.h>
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# include <string.h>
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#else
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# ifndef NULL
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# define NULL 0
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# endif
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#endif
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#ifdef USE_NUMBER_GROUPING
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# include "../locale/localeinfo.h"
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#endif
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/* Nonzero if we are defining `strtoul' or `strtoull', operating on
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unsigned integers. */
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#ifndef UNSIGNED
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# define UNSIGNED 0
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# define INT LONG int
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#else
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# define INT unsigned LONG int
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#endif
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/* Determine the name. */
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# if UNSIGNED
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# ifdef USE_WIDE_CHAR
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# ifdef QUAD
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# define strtol __wcstoull_l
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# else
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# define strtol __wcstoul_l
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# endif
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# else
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# ifdef QUAD
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# define strtol __strtoull_l
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# else
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# define strtol __strtoul_l
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# endif
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# endif
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# else
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# ifdef USE_WIDE_CHAR
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# ifdef QUAD
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# define strtol __wcstoll_l
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# else
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# define strtol __wcstol_l
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# endif
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# else
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# ifdef QUAD
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# define strtol __strtoll_l
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# else
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# define strtol __strtol_l
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# endif
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# endif
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# endif
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#else
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# if UNSIGNED
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# ifdef USE_WIDE_CHAR
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# ifdef QUAD
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# define strtol wcstoull
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# else
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# define strtol wcstoul
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# endif
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# else
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# ifdef QUAD
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# define strtol strtoull
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# else
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# define strtol strtoul
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# endif
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# endif
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# else
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# ifdef USE_WIDE_CHAR
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# ifdef QUAD
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# define strtol wcstoll
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# else
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# define strtol wcstol
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# endif
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# else
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# ifdef QUAD
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# define strtol strtoll
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# endif
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# endif
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# endif
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#endif
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/* If QUAD is defined, we are defining `strtoll' or `strtoull',
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operating on `long long int's. */
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#ifdef QUAD
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# define LONG long long
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# undef LONG_MIN
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# define LONG_MIN LONG_LONG_MIN
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# undef LONG_MAX
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# define LONG_MAX LONG_LONG_MAX
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# undef ULONG_MAX
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# define ULONG_MAX ULONG_LONG_MAX
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# if __GNUC__ == 2 && __GNUC_MINOR__ < 7
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/* Work around gcc bug with using this constant. */
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static const unsigned long long int maxquad = ULONG_LONG_MAX;
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# undef ULONG_MAX
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# define ULONG_MAX maxquad
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# endif
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#else
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# define LONG long
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#ifndef ULONG_MAX
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# define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
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#endif
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#ifndef LONG_MAX
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# define LONG_MAX ((long int) (ULONG_MAX >> 1))
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#endif
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#endif
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/* We use this code also for the extended locale handling where the
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function gets as an additional argument the locale which has to be
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used. To access the values we have to redefine the _NL_CURRENT
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macro. */
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#ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# undef _NL_CURRENT
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# define _NL_CURRENT(category, item) \
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(current->values[_NL_ITEM_INDEX (item)].string)
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# define LOCALE_PARAM , loc
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# define LOCALE_PARAM_DECL __locale_t loc;
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#else
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# define LOCALE_PARAM
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# define LOCALE_PARAM_DECL
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#endif
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#if defined _LIBC || defined HAVE_WCHAR_H
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# include <wchar.h>
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#endif
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#ifdef USE_WIDE_CHAR
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# include <wctype.h>
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|
# define L_(Ch) L##Ch
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# define UCHAR_TYPE wint_t
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# define STRING_TYPE wchar_t
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define ISSPACE(Ch) __iswspace_l ((Ch), loc)
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# define ISALPHA(Ch) __iswalpha_l ((Ch), loc)
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# define TOUPPER(Ch) __towupper_l ((Ch), loc)
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# else
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# define ISSPACE(Ch) iswspace (Ch)
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# define ISALPHA(Ch) iswalpha (Ch)
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|
# define TOUPPER(Ch) towupper (Ch)
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# endif
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# else
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# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
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|
# define IN_CTYPE_DOMAIN(c) 1
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|
# else
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|
# define IN_CTYPE_DOMAIN(c) isascii(c)
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|
# endif
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# define L_(Ch) Ch
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# define UCHAR_TYPE unsigned char
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# define STRING_TYPE char
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# ifdef USE_IN_EXTENDED_LOCALE_MODEL
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# define ISSPACE(Ch) __isspace_l ((Ch), loc)
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# define ISALPHA(Ch) __isalpha_l ((Ch), loc)
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# define TOUPPER(Ch) __toupper_l ((Ch), loc)
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# else
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# define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch))
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# define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
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# define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch))
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# endif
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|
#endif
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|
#ifdef __STDC__
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# define INTERNAL(X) INTERNAL1(X)
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# define INTERNAL1(X) __##X##_internal
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# define WEAKNAME(X) WEAKNAME1(X)
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#else
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# define INTERNAL(X) __/**/X/**/_internal
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|
#endif
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|
#ifdef USE_NUMBER_GROUPING
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|
/* This file defines a function to check for correct grouping. */
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# include "grouping.h"
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|
#endif
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/* Convert NPTR to an `unsigned long int' or `long int' in base BASE.
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If BASE is 0 the base is determined by the presence of a leading
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|
zero, indicating octal or a leading "0x" or "0X", indicating hexadecimal.
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|
If BASE is < 2 or > 36, it is reset to 10.
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|
If ENDPTR is not NULL, a pointer to the character after the last
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|
one converted is stored in *ENDPTR. */
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INT
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INTERNAL (strtol) (nptr, endptr, base, group LOCALE_PARAM)
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const STRING_TYPE *nptr;
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|
STRING_TYPE **endptr;
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|
int base;
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|
int group;
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|
LOCALE_PARAM_DECL
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|
|
{
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|
int negative;
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|
register unsigned LONG int cutoff;
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|
register unsigned int cutlim;
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|
register unsigned LONG int i;
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|
register const STRING_TYPE *s;
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|
register UCHAR_TYPE c;
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|
const STRING_TYPE *save, *end;
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|
int overflow;
|
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|
|
|
|
#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';
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|
|
/* The numeric grouping specification of the current locale,
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|
|
in the format described in <locale.h>. */
|
|
|
const char *grouping;
|
|
|
|
|
|
if (group)
|
|
|
{
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|
|
grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
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|
|
if (*grouping <= 0 || *grouping == CHAR_MAX)
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|
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)
|
|
|
{
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|
|
__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;
|
|
|
}
|
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|
else if (*s == L_('+'))
|
|
|
{
|
|
|
negative = 0;
|
|
|
++s;
|
|
|
}
|
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|
else
|
|
|
negative = 0;
|
|
|
|
|
|
/* Recognize number prefix and if BASE is zero, figure it out ourselves. */
|
|
|
if (*s == L_('0'))
|
|
|
{
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|
|
if (TOUPPER (s[1]) == L_('X'))
|
|
|
{
|
|
|
s += 2;
|
|
|
base = 16;
|
|
|
}
|
|
|
else if (base == 0)
|
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|
base = 8;
|
|
|
}
|
|
|
else if (base == 0)
|
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|
base = 10;
|
|
|
|
|
|
/* Save the pointer so we can check later if anything happened. */
|
|
|
save = s;
|
|
|
|
|
|
#ifdef USE_NUMBER_GROUPING
|
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|
if (group)
|
|
|
{
|
|
|
/* Find the end of the digit string and check its grouping. */
|
|
|
end = s;
|
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|
for (c = *end; c != L_('\0'); c = *++end)
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|
if ((wchar_t) c != thousands
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|
&& ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
|
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|
&& (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
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|
break;
|
|
|
if (*s == thousands)
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|
end = s;
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|
else
|
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|
end = correctly_grouped_prefix (s, end, thousands, grouping);
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|
}
|
|
|
else
|
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|
#endif
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|
end = NULL;
|
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|
|
|
|
cutoff = ULONG_MAX / (unsigned LONG int) base;
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|
cutlim = ULONG_MAX % (unsigned LONG int) base;
|
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|
|
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|
overflow = 0;
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|
i = 0;
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|
for (c = *s; c != L_('\0'); c = *++s)
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|
{
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|
if (s == end)
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|
break;
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|
if (c >= L_('0') && c <= L_('9'))
|
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|
c -= L_('0');
|
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|
else if (ISALPHA (c))
|
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|
c = TOUPPER (c) - L_('A') + 10;
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|
else
|
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|
break;
|
|
|
if ((int) c >= base)
|
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|
break;
|
|
|
/* Check for overflow. */
|
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|
if (i > cutoff || (i == cutoff && c > cutlim))
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|
overflow = 1;
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|
else
|
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|
{
|
|
|
i *= (unsigned LONG int) base;
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|
i += c;
|
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|
}
|
|
|
}
|
|
|
|
|
|
/* Check if anything actually happened. */
|
|
|
if (s == save)
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|
goto noconv;
|
|
|
|
|
|
/* Store in ENDPTR the address of one character
|
|
|
past the last character we converted. */
|
|
|
if (endptr != NULL)
|
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|
*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) (LONG_MIN + 1)) + 1
|
|
|
: (unsigned LONG int) LONG_MAX))
|
|
|
overflow = 1;
|
|
|
#endif
|
|
|
|
|
|
if (overflow)
|
|
|
{
|
|
|
__set_errno (ERANGE);
|
|
|
#if UNSIGNED
|
|
|
return ULONG_MAX;
|
|
|
#else
|
|
|
return negative ? LONG_MIN : 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;
|
|
|
}
|
|
|
|
|
|
/* External user entry point. */
|
|
|
|
|
|
#if _LIBC - 0 == 0
|
|
|
# undef PARAMS
|
|
|
# if defined (__STDC__) && __STDC__
|
|
|
# define PARAMS(Args) Args
|
|
|
# else
|
|
|
# define PARAMS(Args) ()
|
|
|
# endif
|
|
|
|
|
|
/* Prototype. */
|
|
|
INT strtol PARAMS ((const STRING_TYPE *nptr, STRING_TYPE **endptr, int base));
|
|
|
#endif
|
|
|
|
|
|
|
|
|
INT
|
|
|
#ifdef weak_function
|
|
|
weak_function
|
|
|
#endif
|
|
|
strtol (nptr, endptr, base LOCALE_PARAM)
|
|
|
const STRING_TYPE *nptr;
|
|
|
STRING_TYPE **endptr;
|
|
|
int base;
|
|
|
LOCALE_PARAM_DECL
|
|
|
{
|
|
|
return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM);
|
|
|
}
|
