83 lines
2.7 KiB
PHP
83 lines
2.7 KiB
PHP
<?php
|
|
/**
|
|
* LimitProcessor.php
|
|
*
|
|
* This file implements the processor for the LIMIT statements.
|
|
*
|
|
* Copyright (c) 2010-2012, Justin Swanhart
|
|
* with contributions by André Rothe <arothe@phosco.info, phosco@gmx.de>
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
|
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
|
* DAMAGE.
|
|
*/
|
|
|
|
require_once(dirname(__FILE__) . '/AbstractProcessor.php');
|
|
|
|
/**
|
|
*
|
|
* This class processes the LIMIT statements.
|
|
*
|
|
* @author arothe
|
|
*
|
|
*/
|
|
class LimitProcessor extends AbstractProcessor {
|
|
|
|
public function process($tokens) {
|
|
$rowcount = "";
|
|
$offset = "";
|
|
|
|
$comma = -1;
|
|
$exchange = false;
|
|
|
|
for ($i = 0; $i < count($tokens); ++$i) {
|
|
$trim = trim($tokens[$i]);
|
|
if ($trim === ",") {
|
|
$comma = $i;
|
|
break;
|
|
}
|
|
if ($trim === "OFFSET") {
|
|
$comma = $i;
|
|
$exchange = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for ($i = 0; $i < $comma; ++$i) {
|
|
if ($exchange) {
|
|
$rowcount .= $tokens[$i];
|
|
} else {
|
|
$offset .= $tokens[$i];
|
|
}
|
|
}
|
|
|
|
for ($i = $comma + 1; $i < count($tokens); ++$i) {
|
|
if ($exchange) {
|
|
$offset .= $tokens[$i];
|
|
} else {
|
|
$rowcount .= $tokens[$i];
|
|
}
|
|
}
|
|
|
|
return array('offset' => trim($offset), 'rowcount' => trim($rowcount));
|
|
}
|
|
}
|
|
?>
|