diff options
Diffstat (limited to 'sysdeps/generic/strtol.c')
| -rw-r--r-- | sysdeps/generic/strtol.c | 533 |
1 files changed, 36 insertions, 497 deletions
diff --git a/sysdeps/generic/strtol.c b/sysdeps/generic/strtol.c index 953c6c4a90..02ec19aabe 100644 --- a/sysdeps/generic/strtol.c +++ b/sysdeps/generic/strtol.c @@ -1,5 +1,5 @@ /* Convert string representation of a number into an integer value. - Copyright (C) 1991,92,94,95,96,97,98,99,2000,2001,2002,2003 + Copyright (C) 1991,92,94,95,96,97,98,99,2000,2001,2002,2003,2004 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -18,46 +18,10 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#if HAVE_CONFIG_H -# include <config.h> -#endif - -#ifdef _LIBC -# define USE_NUMBER_GROUPING -# define STDC_HEADERS -# define HAVE_LIMITS_H -#endif - -#include <ctype.h> -#include <errno.h> -#ifndef errno -extern int errno; -#endif -#ifndef __set_errno -# define __set_errno(Val) errno = (Val) -#endif - -#ifdef HAVE_LIMITS_H -# include <limits.h> -#endif - -#ifdef STDC_HEADERS -# include <stddef.h> -# include <stdlib.h> -# include <string.h> -# include <locale.h> -#else -# ifndef NULL -# define NULL 0 -# endif -#endif - -#ifdef USE_NUMBER_GROUPING -# include "../locale/localeinfo.h" -#endif +#include <stdlib.h> +#include <wchar.h> +#include <locale/localeinfo.h> -/* Nonzero if we are defining `strtoul' or `strtoull', operating on - unsigned integers. */ #ifndef UNSIGNED # define UNSIGNED 0 # define INT LONG int @@ -65,508 +29,83 @@ extern int errno; # 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 +#if UNSIGNED +# ifdef USE_WIDE_CHAR +# ifdef QUAD +# define strtol wcstoull +# define __strtol_l __wcstoull_l # else -# ifdef QUAD -# define strtol __strtoull_l -# else -# define strtol __strtoul_l -# endif +# define strtol wcstoul +# define __strtol_l __wcstoul_l # endif # else -# ifdef USE_WIDE_CHAR -# ifdef QUAD -# define strtol __wcstoll_l -# else -# define strtol __wcstol_l -# endif +# ifdef QUAD +# define strtol strtoull +# define __strtol_l __strtoull_l # else -# ifdef QUAD -# define strtol __strtoll_l -# else -# define strtol __strtol_l -# endif +# define strtol strtoul +# define __strtol_l __strtoul_l # endif # endif #else -# if UNSIGNED -# ifdef USE_WIDE_CHAR -# ifdef QUAD -# define strtol wcstoull -# else -# define strtol wcstoul -# endif +# ifdef USE_WIDE_CHAR +# ifdef QUAD +# define strtol wcstoll +# define __strtol_l __wcstoll_l # else -# ifdef QUAD -# define strtol strtoull -# else -# define strtol strtoul -# endif +# define strtol wcstol +# define __strtol_l __wcstol_l # endif # else -# ifdef USE_WIDE_CHAR -# ifdef QUAD -# define strtol wcstoll -# else -# define strtol wcstol -# endif -# else -# ifdef QUAD -# define strtol strtoll -# endif +# ifdef QUAD +# define strtol strtoll +# define __strtol_l __strtoll_l # 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 -# 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 - -# ifndef ULONG_MAX -# define ULONG_MAX ((unsigned long) ~(unsigned long) 0) -# endif -# ifndef LONG_MAX -# define LONG_MAX ((long int) (ULONG_MAX >> 1)) -# endif -# 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_DECL __locale_t loc; -#else -# define LOCALE_PARAM -# define LOCALE_PARAM_DECL #endif -#if defined _LIBC || defined HAVE_WCHAR_H -# include <wchar.h> -#endif #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 -# if defined _LIBC \ - || defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII) -# define IN_CTYPE_DOMAIN(c) 1 -# else -# define IN_CTYPE_DOMAIN(c) isascii(c) -# endif -# 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) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch)) -# define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch)) -# define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch)) -# endif -#endif - -#ifdef __STDC__ -# define INTERNAL(X) INTERNAL1(X) -# define INTERNAL1(X) __##X##_internal -# define WEAKNAME(X) WEAKNAME1(X) #else -# define INTERNAL(X) __/**/X/**/_internal +# define STRING_TYPE char #endif -#ifdef USE_NUMBER_GROUPING -/* This file defines a function to check for correct grouping. */ -# include "grouping.h" -#endif + +#define INTERNAL(X) INTERNAL1(X) +#define INTERNAL1(X) __##X##_internal +extern INT INTERNAL (__strtol_l) (const STRING_TYPE *, STRING_TYPE **, int, + int, __locale_t); -/* 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) (nptr, endptr, base, group LOCALE_PARAM) +INTERNAL (strtol) (nptr, endptr, base, group) const STRING_TYPE *nptr; STRING_TYPE **endptr; int base; int group; - LOCALE_PARAM_DECL { - 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; -#ifndef USE_WIDE_CHAR - size_t cnt; -#endif - -#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. */ -# ifdef USE_WIDE_CHAR - wchar_t thousands = L'\0'; -# else - const char *thousands = NULL; - size_t thousands_len = 0; -# endif - /* The numeric grouping specification of the current locale, - in the format described in <locale.h>. */ - const char *grouping; - - if (__builtin_expect (group, 0)) - { - grouping = _NL_CURRENT (LC_NUMERIC, GROUPING); - if (*grouping <= 0 || *grouping == CHAR_MAX) - grouping = NULL; - else - { - /* Figure out the thousands separator character. */ -# ifdef USE_WIDE_CHAR -# ifdef _LIBC - thousands = _NL_CURRENT_WORD (LC_NUMERIC, - _NL_NUMERIC_THOUSANDS_SEP_WC); -# endif - if (thousands == L'\0') - grouping = NULL; -# else -# ifdef _LIBC - thousands = _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); -# endif - if (*thousands == '\0') - { - thousands = NULL; - grouping = NULL; - } -# endif - } - } - 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 (__builtin_expect (*s == L_('\0'), 0)) - goto noconv; - - /* Check for a sign. */ - negative = 0; - if (*s == L_('-')) - { - negative = 1; - ++s; - } - else if (*s == L_('+')) - ++s; - - /* 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 (base != 10) - grouping = NULL; - - if (__builtin_expect (grouping != NULL, 0)) - { -# ifndef USE_WIDE_CHAR - thousands_len = strlen (thousands); -# endif - - /* Find the end of the digit string and check its grouping. */ - end = s; - if ( -# ifdef USE_WIDE_CHAR - *s != thousands -# else - ({ for (cnt = 0; cnt < thousands_len; ++cnt) - if (thousands[cnt] != end[cnt]) - break; - cnt < thousands_len; }) -# endif - ) - { - for (c = *end; c != L_('\0'); c = *++end) - if (((STRING_TYPE) c < L_('0') || (STRING_TYPE) c > L_('9')) -# ifdef USE_WIDE_CHAR - && (wchar_t) c != thousands -# else - && ({ for (cnt = 0; cnt < thousands_len; ++cnt) - if (thousands[cnt] != end[cnt]) - break; - cnt < thousands_len; }) -# endif - && (!ISALPHA (c) - || (int) (TOUPPER (c) - L_('A') + 10) >= base)) - break; - -# ifdef USE_WIDE_CHAR - end = __correctly_grouped_prefixwc (s, end, thousands, grouping); -# else - end = __correctly_grouped_prefixmb (s, end, thousands, grouping); -# endif - } - } - else -#endif - end = NULL; - - cutoff = STRTOL_ULONG_MAX / (unsigned LONG int) base; - cutlim = STRTOL_ULONG_MAX % (unsigned LONG int) base; - - overflow = 0; - i = 0; - c = *s; - if (sizeof (long int) != sizeof (LONG int)) - { - unsigned long int j = 0; - unsigned long int jmax = ULONG_MAX / base; - - for (;c != L_('\0'); c = *++s) - { - if (s == end) - break; - if (c >= L_('0') && c <= L_('9')) - c -= L_('0'); -#ifdef USE_NUMBER_GROUPING -# ifdef USE_WIDE_CHAR - else if (grouping && (wchar_t) c == thousands) - continue; -# else - else if (thousands_len) - { - for (cnt = 0; cnt < thousands_len; ++cnt) - if (thousands[cnt] != s[cnt]) - break; - if (cnt == thousands_len) - { - s += thousands_len - 1; - continue; - } - if (ISALPHA (c)) - c = TOUPPER (c) - L_('A') + 10; - else - break; - } -# endif -#endif - else if (ISALPHA (c)) - c = TOUPPER (c) - L_('A') + 10; - else - break; - if ((int) c >= base) - break; - /* Note that we never can have an overflow. */ - else if (j >= jmax) - { - /* We have an overflow. Now use the long representation. */ - i = (unsigned LONG int) j; - goto use_long; - } - else - j = j * (unsigned long int) base + c; - } - - i = (unsigned LONG int) j; - } - else - for (;c != L_('\0'); c = *++s) - { - if (s == end) - break; - if (c >= L_('0') && c <= L_('9')) - c -= L_('0'); -#ifdef USE_NUMBER_GROUPING -# ifdef USE_WIDE_CHAR - else if (grouping && (wchar_t) c == thousands) - continue; -# else - else if (thousands_len) - { - for (cnt = 0; cnt < thousands_len; ++cnt) - if (thousands[cnt] != s[cnt]) - break; - if (cnt == thousands_len) - { - s += thousands_len - 1; - continue; - } - if (ISALPHA (c)) - c = TOUPPER (c) - L_('A') + 10; - else - break; - } -# endif -#endif - 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 - { - use_long: - 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 (__builtin_expect (overflow, 0)) - { - __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; + return INTERNAL (__strtol_l) (nptr, endptr, base, group, _NL_CURRENT_LOCALE); } -#if defined _LIBC \ - && !(defined USE_IN_EXTENDED_LOCALE_MODEL && defined USE_WIDE_CHAR) libc_hidden_def (INTERNAL (strtol)) -#endif - -/* 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) +strtol (nptr, endptr, base) const STRING_TYPE *nptr; STRING_TYPE **endptr; int base; - LOCALE_PARAM_DECL { - return INTERNAL (strtol) (nptr, endptr, base, 0 LOCALE_PARAM); + return INTERNAL (__strtol_l) (nptr, endptr, base, 0, _NL_CURRENT_LOCALE); } |