-/* Copyright (C) 1991, 1992, 1994, 1995 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.
+/* 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
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, 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
+#if HAVE_CONFIG_H
# include <config.h>
#endif
#ifndef errno
extern int errno;
#endif
+#ifndef __set_errno
+# define __set_errno(Val) errno = (Val)
+#endif
-#if HAVE_LIMITS_H
+#ifdef HAVE_LIMITS_H
# include <limits.h>
#endif
#ifdef STDC_HEADERS
# include <stddef.h>
# include <stdlib.h>
+# include <string.h>
#else
# ifndef NULL
# define NULL 0
# define UNSIGNED 0
# define INT LONG int
#else
-# define strtol strtoul
# 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
-# if UNSIGNED
-# define strtoul strtouq
-# else
-# define strtol strtoq
-# endif
# define LONG long long
# undef LONG_MIN
# define LONG_MIN LONG_LONG_MIN
# 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
+#endif
+
+#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
#ifdef __STDC__
-# define INTERNAL(x) INTERNAL1(x)
-# define INTERNAL1(x) __##x##_internal
+# define INTERNAL(X) INTERNAL1(X)
+# define INTERNAL1(X) __##X##_internal
+# define WEAKNAME(X) WEAKNAME1(X)
#else
-# define INTERNAL(x) __/**/x/**/_internal
+# define INTERNAL(X) __/**/X/**/_internal
#endif
#ifdef USE_NUMBER_GROUPING
INT
INTERNAL (strtol) (nptr, endptr, base, group)
- const char *nptr;
- char **endptr;
+ const STRING_TYPE *nptr;
+ STRING_TYPE **endptr;
int base;
int group;
{
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, *end;
+ register const STRING_TYPE *s;
+ register UCHAR_TYPE c;
+ const STRING_TYPE *save, *end;
int overflow;
#ifdef USE_NUMBER_GROUPING
#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 (*s == L_('0'))
{
- if (toupper (s[1]) == 'X')
+ if (TOUPPER (s[1]) == L_('X'))
{
s += 2;
base = 16;
{
/* Find the end of the digit string and check its grouping. */
end = s;
- for (c = *end; c != '\0'; c = *++end)
- if (c != thousands && !isdigit (c) &&
- (!isalpha (c) || toupper (c) - 'A' + 10 >= base))
+ 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;
overflow = 0;
i = 0;
- for (c = *s; c != '\0'; c = *++s)
+ for (c = *s; c != L_('\0'); c = *++s)
{
if (s == end)
break;
- if (isdigit (c))
- c -= '0';
- else if (isalpha (c))
- c = toupper (c) - 'A' + 10;
+ 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))
/* 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
/* 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))
+ 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;
+ __set_errno (ERANGE);
#if UNSIGNED
return ULONG_MAX;
#else
return (negative ? -i : i);
noconv:
- /* There was no number to convert. */
+ /* 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. */
-#ifdef weak_symbol
-weak_symbol (strtol)
+#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 char *nptr;
- char **endptr;
+ const STRING_TYPE *nptr;
+ STRING_TYPE **endptr;
int base;
{
return INTERNAL (strtol) (nptr, endptr, base, 0);
projects / gnulib.git / blobdiff