-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+/* strtol - Convert string representation of a number into an integer value.
+ Copyright (C) 1991, 92, 94, 95, 96, 97 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@prep.ai.mit.edu.
- 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 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
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#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>
#ifndef errno
extern int errno;
#endif
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
-#if HAVE_LIMITS_H
-#include <limits.h>
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
#endif
-#ifndef ULONG_MAX
-#define ULONG_MAX ((unsigned long) ~(unsigned long) 0)
+#ifdef STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.h>
+# include <string.h>
+#else
+# ifndef NULL
+# define NULL 0
+# endif
+#endif
+
+#ifdef USE_NUMBER_GROUPING
+# include "../locale/localeinfo.h"
#endif
+/* Nonzero if we are defining `strtoul' or `strtouq', operating on
+ unsigned integers. */
+#ifndef UNSIGNED
+# define UNSIGNED 0
+# define INT LONG int
+#else
+# define INT unsigned LONG int
+#endif
+
+/* Determine the name. */
+#if UNSIGNED
+# ifdef USE_WIDE_CHAR
+# ifdef QUAD
+# define strtol wcstouq
+# else
+# define strtol wcstoul
+# endif
+# else
+# ifdef QUAD
+# define strtol strtouq
+# else
+# define strtol strtoul
+# endif
+# endif
+#else
+# ifdef USE_WIDE_CHAR
+# ifdef QUAD
+# define strtol wcstoq
+# else
+# define strtol wcstol
+# endif
+# else
+# ifdef QUAD
+# define strtol strtoq
+# endif
+# endif
+#endif
+
+/* If QUAD is defined, we are defining `strtoq' or `strtouq',
+ operating on `long long int's. */
+#ifdef QUAD
+# define LONG long long
+# undef LONG_MIN
+# define LONG_MIN LONG_LONG_MIN
+# undef LONG_MAX
+# define LONG_MAX LONG_LONG_MAX
+# undef ULONG_MAX
+# define 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 ULONG_MAX
+# define 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 (~(1 << (sizeof (long) * 8 - 1)))
+# define LONG_MAX ((long int) (ULONG_MAX >> 1))
+#endif
#endif
-#ifndef LONG_MIN
-#define LONG_MIN (-LONG_MAX - 1)
+#ifdef USE_WIDE_CHAR
+# include <wchar.h>
+# include <wctype.h>
+# define L_(Ch) L##Ch
+# define UCHAR_TYPE wint_t
+# define STRING_TYPE wchar_t
+# define ISSPACE(Ch) iswspace (Ch)
+# define ISALPHA(Ch) iswalpha (Ch)
+# define TOUPPER(Ch) towupper (Ch)
+#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
+# 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
-#if STDC_HEADERS
-#include <stddef.h>
-#include <stdlib.h>
+#ifdef __STDC__
+# define INTERNAL(X) INTERNAL1(X)
+# define INTERNAL1(X) __##X##_internal
+# define WEAKNAME(X) WEAKNAME1(X)
#else
-#define NULL 0
+# define INTERNAL(X) __/**/X/**/_internal
#endif
-#ifndef UNSIGNED
-#define UNSIGNED 0
+#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. */
-#if UNSIGNED
-unsigned long int
-#define strtol strtoul
-#else
-long int
-#endif
-strtol (nptr, endptr, base)
- const char *nptr;
- char **endptr;
+
+INT
+INTERNAL (strtol) (nptr, endptr, base, group)
+ const STRING_TYPE *nptr;
+ STRING_TYPE **endptr;
int base;
+ int group;
{
int negative;
- register unsigned long int cutoff;
+ register unsigned LONG int cutoff;
register unsigned int cutlim;
- register unsigned long int i;
- register const char *s;
- register unsigned char c;
- const char *save;
+ 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
+ /* The thousands character of the current locale. */
+ wchar_t thousands;
+ /* 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 (mbtowc (&thousands, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
+ strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
+ thousands = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
+ if (thousands == L'\0')
+ grouping = NULL;
+ }
+ }
+ else
+ grouping = NULL;
+#endif
+
if (base < 0 || base == 1 || base > 36)
- base = 10;
+ {
+ __set_errno (EINVAL);
+ return 0;
+ }
- s = nptr;
+ save = s = nptr;
/* Skip white space. */
- while (isspace (*s))
+ while (ISSPACE (*s))
++s;
- if (*s == '\0')
+ if (*s == L_('\0'))
goto noconv;
/* Check for a sign. */
- if (*s == '-')
+ if (*s == L_('-'))
{
negative = 1;
++s;
}
- else if (*s == '+')
+ else if (*s == L_('+'))
{
negative = 0;
++s;
else
negative = 0;
- if (base == 16 && s[0] == '0' && toupper (s[1]) == 'X')
+ if (base == 16 && s[0] == L_('0') && TOUPPER (s[1]) == L_('X'))
s += 2;
/* If BASE is zero, figure it out ourselves. */
if (base == 0)
- {
- if (*s == '0')
- {
- if (toupper (s[1]) == 'X')
- {
- s += 2;
- base = 16;
- }
- else
- base = 8;
- }
- else
- base = 10;
- }
+ if (*s == L_('0'))
+ {
+ if (TOUPPER (s[1]) == L_('X'))
+ {
+ s += 2;
+ base = 16;
+ }
+ else
+ base = 8;
+ }
+ else
+ base = 10;
/* Save the pointer so we can check later if anything happened. */
save = s;
- cutoff = ULONG_MAX / (unsigned long int) base;
- cutlim = ULONG_MAX % (unsigned long int) base;
+#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 = ULONG_MAX / (unsigned LONG int) base;
+ cutlim = ULONG_MAX % (unsigned LONG int) base;
overflow = 0;
i = 0;
- for (c = *s; c != '\0'; c = *++s)
+ for (c = *s; c != L_('\0'); c = *++s)
{
- if (isdigit (c))
- c -= '0';
- else if (isalpha (c))
- c = toupper (c) - 'A' + 10;
+ 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 (c >= base)
+ if ((int) c >= base)
break;
/* Check for overflow. */
if (i > cutoff || (i == cutoff && c > cutlim))
overflow = 1;
else
{
- i *= (unsigned long int) base;
+ i *= (unsigned LONG int) base;
i += c;
}
}
/* Store in ENDPTR the address of one character
past the last character we converted. */
if (endptr != NULL)
- *endptr = (char *) s;
+ *endptr = (STRING_TYPE *) s;
-#if !UNSIGNED
+#if !UNSIGNED
/* Check for a value that is within the range of
- `unsigned long int', but outside the range of `long int'. */
- if (i > (negative ?
- -(unsigned long int) LONG_MIN : (unsigned long int) LONG_MAX))
+ `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;
+#else
+ overflow |= negative;
#endif
if (overflow)
{
- errno = ERANGE;
-#if UNSIGNED
+ __set_errno (ERANGE);
+#if UNSIGNED
return ULONG_MAX;
#else
return negative ? LONG_MIN : LONG_MAX;
/* Return the result of the appropriate sign. */
return (negative ? -i : i);
-noconv:;
- /* There was no number to convert. */
+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)
- *endptr = (char *) nptr;
+ 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. */
+
+#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)
+ const STRING_TYPE *nptr;
+ STRING_TYPE **endptr;
+ int base;
+{
+ return INTERNAL (strtol) (nptr, endptr, base, 0);
+}
projects / gnulib.git / blobdiff