freebsd-dev/share/zoneinfo/ialloc.c
1994-05-30 19:09:18 +00:00

141 lines
3.8 KiB
C

/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Arthur David Olson of the National Cancer Institute.
*
* 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.
*/
#ifndef lint
static char sccsid[] = "@(#)ialloc.c 8.1 (Berkeley) 6/8/93";
#endif /* not lint */
#ifdef notdef
static char elsieid[] = "@(#)ialloc.c 8.18";
#endif
/*LINTLIBRARY*/
#include <string.h>
#include <stdlib.h>
#ifdef MAL
#define NULLMAL(x) ((x) == NULL || (x) == MAL)
#else /* !defined MAL */
#define NULLMAL(x) ((x) == NULL)
#endif /* !defined MAL */
#define nonzero(n) (((n) == 0) ? 1 : (n))
char * icalloc __P((int nelem, int elsize));
char * icatalloc __P((char * old, const char * new));
char * icpyalloc __P((const char * string));
char * imalloc __P((int n));
char * irealloc __P((char * pointer, int size));
void ifree __P((char * pointer));
char *
imalloc(n)
const int n;
{
#ifdef MAL
register char * result;
result = malloc((size_t) nonzero(n));
return NULLMAL(result) ? NULL : result;
#else /* !defined MAL */
return malloc((size_t) nonzero(n));
#endif /* !defined MAL */
}
char *
icalloc(nelem, elsize)
int nelem;
int elsize;
{
if (nelem == 0 || elsize == 0)
nelem = elsize = 1;
return calloc((size_t) nelem, (size_t) elsize);
}
char *
irealloc(pointer, size)
char * const pointer;
const int size;
{
if (NULLMAL(pointer))
return imalloc(size);
return realloc((void *) pointer, (size_t) nonzero(size));
}
char *
icatalloc(old, new)
char * const old;
const char * const new;
{
register char * result;
register oldsize, newsize;
newsize = NULLMAL(new) ? 0 : strlen(new);
if (NULLMAL(old))
oldsize = 0;
else if (newsize == 0)
return old;
else oldsize = strlen(old);
if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
if (!NULLMAL(new))
(void) strcpy(result + oldsize, new);
return result;
}
char *
icpyalloc(string)
const char * const string;
{
return icatalloc((char *) NULL, string);
}
void
ifree(p)
char * const p;
{
if (!NULLMAL(p))
(void) free(p);
}
void
icfree(p)
char * const p;
{
if (!NULLMAL(p))
(void) free(p);
}