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php-src/Zend/zend_dynamic_array.c at master · EndlessCoding/php-src · GitHub
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zend_dynamic_array.c
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zend_dynamic_array.c
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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2013 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 through the world-wide-web at the following url: |
| 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:
*/
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