From d5708bd21060bf67f97e5dfe3bc6cb88f2ecea8e Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Thu, 13 Feb 2003 21:38:45 +0000 Subject: Move lib/strtol.c to gettext-tools/lib/strtol.c. --- gettext-tools/lib/strtol.c | 567 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 567 insertions(+) create mode 100644 gettext-tools/lib/strtol.c (limited to 'gettext-tools') diff --git a/gettext-tools/lib/strtol.c b/gettext-tools/lib/strtol.c new file mode 100644 index 0000000..4ea3021 --- /dev/null +++ b/gettext-tools/lib/strtol.c @@ -0,0 +1,567 @@ +/* Convert string representation of a number into an integer value. + Copyright (C) 1991,92,94,95,96,97,98,99,2000 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 2, or (at your option) 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, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + USA. */ + +#if HAVE_CONFIG_H +# include +#endif + +#ifdef _LIBC +# define USE_NUMBER_GROUPING +# define STDC_HEADERS +# define HAVE_LIMITS_H +#endif + +#include +#include +#ifndef errno +extern int errno; +#endif +#ifndef __set_errno +# define __set_errno(Val) errno = (Val) +#endif + +#ifdef HAVE_LIMITS_H +# include +#endif + +#ifdef STDC_HEADERS +# include +# include +# include +#else +# ifndef NULL +# define NULL 0 +# endif +#endif + +#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 +# 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 +#endif + +#ifdef USE_WIDE_CHAR +# include +# 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 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 +#endif + +#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) (nptr, endptr, base, group LOCALE_PARAM) + 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; +#if defined USE_NUMBER_GROUPING && !defined USE_WIDE_CHAR + int 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 . */ + 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. */ +# 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 (*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 (base != 10) + grouping = NULL; + + if (grouping) + { +# 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 (((wchar_t) c < L_('0') || (wchar_t) c > L_('9')) +# ifdef USE_WIDE_CHAR + && 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; + + 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; + 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 && 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 && 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 (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; +} + +/* 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); +} -- cgit v1.1