Fall 93 release from Arthur David Olson (as a vendor branch)

[unix-history] / share / zoneinfo / ialloc.c

#ifndef lint
#ifndef NOID
static char     elsieid[] = "@(#)ialloc.c       8.20";
#endif /* !defined NOID */
#endif /* !defined lint */

/*LINTLIBRARY*/

#include "private.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((alloc_size_t) nonzero(n));
       return NULLMAL(result) ? NULL : result;
#else /* !defined MAL */
       return malloc((alloc_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((alloc_size_t) nelem, (alloc_size_t) elsize);
}

char *
irealloc(pointer, size)
char * const    pointer;
const int       size;
{
       if (NULLMAL(pointer))
               return imalloc(size);
       return realloc((genericptr_t) pointer, (alloc_size_t) nonzero(size));
}

char *
icatalloc(old, new)
char * const            old;
const char * const      new;
{
       register char * result;
       register int    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);
}