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#include "postgres.h"
#include "private.h"
#define nonzero(n) (((n) == 0) ? 1 : (n))
char *imalloc(const int n)
{
return malloc((size_t) nonzero(n));
}
char *icalloc(int nelem, int elsize)
{
if (nelem == 0 || elsize == 0)
nelem = elsize = 1;
return calloc((size_t) nelem, (size_t) elsize);
}
void *irealloc(void *pointer, const int size)
{
if (pointer == NULL)
return imalloc(size);
return realloc((void *) pointer, (size_t) nonzero(size));
}
char *icatalloc(char *old, const char *new)
{
register char * result;
register int oldsize, newsize;
newsize = (new == NULL) ? 0 : strlen(new);
if (old == NULL)
oldsize = 0;
else if (newsize == 0)
return old;
else oldsize = strlen(old);
if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
if (new != NULL)
(void) strcpy(result + oldsize, new);
return result;
}
char *icpyalloc(const char *string)
{
return icatalloc((char *) NULL, string);
}
void ifree(char *p)
{
if (p != NULL)
(void) free(p);
}
void icfree(char *p)
{
if (p != NULL)
(void) free(p);
}