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|
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2003 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
typedef struct _dynamic_array {
char *array;
unsigned int element_size;
unsigned int current;
unsigned int allocated;
} dynamic_array;
ZEND_API int zend_dynamic_array_init(dynamic_array *da, unsigned int element_size, unsigned int size)
{
da->element_size = element_size;
da->allocated = size;
da->current = 0;
da->array = (char *) emalloc(size*element_size);
if (da->array == NULL) {
return 1;
}
return 0;
}
ZEND_API void *zend_dynamic_array_push(dynamic_array *da)
{
if (da->current == da->allocated) {
da->allocated *= 2;
da->array = (char *) erealloc(da->array, da->allocated*da->element_size);
}
return (void *)(da->array+(da->current++)*da->element_size);
}
ZEND_API void *zend_dynamic_array_pop(dynamic_array *da)
{
return (void *)(da->array+(--(da->current))*da->element_size);
}
ZEND_API void *zend_dynamic_array_get_element(dynamic_array *da, unsigned int index)
{
if (index >= da->current) {
return NULL;
}
return (void *)(da->array+index*da->element_size);
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
|
