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73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2008 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "zend.h"
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typedef struct _dynamic_array {
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char *array;
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unsigned int element_size;
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unsigned int current;
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unsigned int allocated;
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} dynamic_array;
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ZEND_API int zend_dynamic_array_init(dynamic_array *da, unsigned int element_size, unsigned int size)
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{
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da->element_size = element_size;
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da->allocated = size;
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da->current = 0;
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da->array = (char *) emalloc(size*element_size);
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if (da->array == NULL) {
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return 1;
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}
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return 0;
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}
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ZEND_API void *zend_dynamic_array_push(dynamic_array *da)
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{
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if (da->current == da->allocated) {
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da->allocated *= 2;
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da->array = (char *) erealloc(da->array, da->allocated*da->element_size);
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}
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return (void *)(da->array+(da->current++)*da->element_size);
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}
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ZEND_API void *zend_dynamic_array_pop(dynamic_array *da)
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{
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return (void *)(da->array+(--(da->current))*da->element_size);
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}
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ZEND_API void *zend_dynamic_array_get_element(dynamic_array *da, unsigned int index)
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{
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if (index >= da->current) {
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return NULL;
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}
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return (void *)(da->array+index*da->element_size);
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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*/
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