summaryrefslogtreecommitdiff
path: root/support/strtol.c
diff options
context:
space:
mode:
authornobody <nobody@localhost>1999-01-06 01:45:20 +0000
committernobody <nobody@localhost>1999-01-06 01:45:20 +0000
commit4e51d0a871dc2e11a7fa4e915e662ec83004d95c (patch)
treee21802892a2efb992676f14f924bfeedfd345679 /support/strtol.c
parentf8bd3f941886d669686d934e86d1ac880b9af150 (diff)
downloadshared-mime-info-dynamic-imlib.tar.gz
This commit was manufactured by cvs2svn to create branchdynamic-imlib
'dynamic-imlib'. svn path=/branches/dynamic-imlib/; revision=563
Diffstat (limited to 'support/strtol.c')
-rw-r--r--support/strtol.c142
1 files changed, 0 insertions, 142 deletions
diff --git a/support/strtol.c b/support/strtol.c
deleted file mode 100644
index 75b74939..00000000
--- a/support/strtol.c
+++ /dev/null
@@ -1,142 +0,0 @@
-/*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <limits.h>
-#include <ctype.h>
-#include <errno.h>
-#if 0
-#include <stdlib.h>
-#endif
-
-/* FIXME: It'd be nice to configure around these, but the include files are too
- painful. These macros should at least be more portable than hardwired hex
- constants. */
-
-#ifndef ULONG_MAX
-#define ULONG_MAX ((unsigned long)(~0L)) /* 0xFFFFFFFF */
-#endif
-
-#ifndef LONG_MAX
-#define LONG_MAX ((long)(ULONG_MAX >> 1)) /* 0x7FFFFFFF */
-#endif
-
-#ifndef LONG_MIN
-#define LONG_MIN ((long)(~LONG_MAX)) /* 0x80000000 */
-#endif
-
-/*
- * Convert a string to a long integer.
- *
- * Ignores `locale' stuff. Assumes that the upper and lower case
- * alphabets and digits are each contiguous.
- */
-long
-strtol(nptr, endptr, base)
- const char *nptr;
- char **endptr;
- register int base;
-{
- register const char *s = nptr;
- register unsigned long acc;
- register int c;
- register unsigned long cutoff;
- register int neg = 0, any, cutlim;
-
- /*
- * Skip white space and pick up leading +/- sign if any.
- * If base is 0, allow 0x for hex and 0 for octal, else
- * assume decimal; if base is already 16, allow 0x.
- */
- do {
- c = *s++;
- } while (isspace(c));
- if (c == '-') {
- neg = 1;
- c = *s++;
- } else if (c == '+')
- c = *s++;
- if ((base == 0 || base == 16) &&
- c == '0' && (*s == 'x' || *s == 'X')) {
- c = s[1];
- s += 2;
- base = 16;
- }
- if (base == 0)
- base = c == '0' ? 8 : 10;
-
- /*
- * Compute the cutoff value between legal numbers and illegal
- * numbers. That is the largest legal value, divided by the
- * base. An input number that is greater than this value, if
- * followed by a legal input character, is too big. One that
- * is equal to this value may be valid or not; the limit
- * between valid and invalid numbers is then based on the last
- * digit. For instance, if the range for longs is
- * [-2147483648..2147483647] and the input base is 10,
- * cutoff will be set to 214748364 and cutlim to either
- * 7 (neg==0) or 8 (neg==1), meaning that if we have accumulated
- * a value > 214748364, or equal but the next digit is > 7 (or 8),
- * the number is too big, and we will return a range error.
- *
- * Set any if any `digits' consumed; make it negative to indicate
- * overflow.
- */
- cutoff = neg ? -(unsigned long)LONG_MIN : LONG_MAX;
- cutlim = cutoff % (unsigned long)base;
- cutoff /= (unsigned long)base;
- for (acc = 0, any = 0;; c = *s++) {
- if (isdigit(c))
- c -= '0';
- else if (isalpha(c))
- c -= isupper(c) ? 'A' - 10 : 'a' - 10;
- else
- break;
- if (c >= base)
- break;
- if (any < 0 || acc > cutoff || acc == cutoff && c > cutlim)
- any = -1;
- else {
- any = 1;
- acc *= base;
- acc += c;
- }
- }
- if (any < 0) {
- acc = neg ? LONG_MIN : LONG_MAX;
- errno = ERANGE;
- } else if (neg)
- acc = -acc;
- if (endptr != 0)
- *endptr = (char *) (any ? s - 1 : nptr);
- return (acc);
-}