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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <[email protected]> |
| Ulf Wendel <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_read_buffer.h"
/* {{{ mysqlnd_read_buffer_is_empty */
static zend_bool
mysqlnd_read_buffer_is_empty(const MYSQLND_READ_BUFFER * const buffer)
{
return buffer->len? FALSE:TRUE;
}
/* }}} */
/* {{{ mysqlnd_read_buffer_read */
static void
mysqlnd_read_buffer_read(MYSQLND_READ_BUFFER * buffer, const size_t count, zend_uchar * dest)
{
if (buffer->len >= count) {
memcpy(dest, buffer->data + buffer->offset, count);
buffer->offset += count;
buffer->len -= count;
}
}
/* }}} */
/* {{{ mysqlnd_read_buffer_bytes_left */
static size_t
mysqlnd_read_buffer_bytes_left(const MYSQLND_READ_BUFFER * const buffer)
{
return buffer->len;
}
/* }}} */
/* {{{ mysqlnd_read_buffer_free */
static void
mysqlnd_read_buffer_free(MYSQLND_READ_BUFFER ** buffer)
{
DBG_ENTER("mysqlnd_read_buffer_free");
if (*buffer) {
mnd_efree((*buffer)->data);
mnd_efree(*buffer);
*buffer = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_create_read_buffer */
PHPAPI MYSQLND_READ_BUFFER *
mysqlnd_create_read_buffer(const size_t count)
{
MYSQLND_READ_BUFFER * ret = mnd_emalloc(sizeof(MYSQLND_READ_BUFFER));
DBG_ENTER("mysqlnd_create_read_buffer");
ret->is_empty = mysqlnd_read_buffer_is_empty;
ret->read = mysqlnd_read_buffer_read;
ret->bytes_left = mysqlnd_read_buffer_bytes_left;
ret->free_buffer = mysqlnd_read_buffer_free;
ret->data = mnd_emalloc(count);
ret->size = ret->len = count;
ret->offset = 0;
DBG_RETURN(ret);
}
/* }}} */