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authorKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
commit487ca4806cc046076293cf6cc5fbba0db282bac7 (patch)
tree847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/kpathsea/strtol.c
parenta3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff)
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/kpathsea/strtol.c')
-rw-r--r--Build/source/texk/kpathsea/strtol.c297
1 files changed, 297 insertions, 0 deletions
diff --git a/Build/source/texk/kpathsea/strtol.c b/Build/source/texk/kpathsea/strtol.c
new file mode 100644
index 00000000000..add9cb46885
--- /dev/null
+++ b/Build/source/texk/kpathsea/strtol.c
@@ -0,0 +1,297 @@
+/* strtol.c - convert a string to an unsigned long int.
+
+ Copyright 1997 Karl Berry.
+ Copyright 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+/* The original code in this file came from the GNU C Library,
+ with modifications to fit libkpathsea.
+ */
+
+#ifdef 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
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#ifdef STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.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 strtol strtoul
+# define INT unsigned LONG int
+#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
+# 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
+#endif
+
+#ifdef __STDC__
+# define INTERNAL(x) INTERNAL1(x)
+# define INTERNAL1(x) __##x##_internal
+#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)
+ const char *nptr;
+ char **endptr;
+ int base;
+ int group;
+{
+ int negative;
+ 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;
+ 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;
+
+ s = nptr;
+
+ /* Skip white space. */
+ while (isspace (*s))
+ ++s;
+ if (*s == '\0')
+ goto noconv;
+
+ /* Check for a sign. */
+ if (*s == '-')
+ {
+ negative = 1;
+ ++s;
+ }
+ else if (*s == '+')
+ {
+ negative = 0;
+ ++s;
+ }
+ else
+ negative = 0;
+
+ if (base == 16 && s[0] == '0' && toupper (s[1]) == '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;
+
+ /* Save the pointer so we can check later if anything happened. */
+ save = s;
+
+#ifdef USE_NUMBER_GROUPING
+ if (group)
+ {
+ /* 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))
+ 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)
+ {
+ if (s == end)
+ break;
+ if (isdigit (c))
+ c -= '0';
+ else if (isalpha (c))
+ c = toupper (c) - 'A' + 10;
+ else
+ break;
+ if (c >= base)
+ break;
+ /* Check for overflow. */
+ if (i > cutoff || (i == cutoff && c > cutlim))
+ overflow = 1;
+ else
+ {
+ 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 = (char *) 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))
+ overflow = 1;
+#endif
+
+ if (overflow)
+ {
+ 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:
+ /* There was no number to convert. */
+ if (endptr != NULL)
+ *endptr = (char *) nptr;
+ return 0L;
+}
+
+/* External user entry point. */
+
+#ifdef weak_symbol
+weak_symbol (strtol)
+#endif
+
+INT
+strtol (nptr, endptr, base)
+ const char *nptr;
+ char **endptr;
+ int base;
+{
+ return INTERNAL (strtol) (nptr, endptr, base, 0);
+}