94 lines
3.6 KiB
PHP
94 lines
3.6 KiB
PHP
<?php
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/**
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* RenameProcessor.php
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*
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* This file implements the processor for the RENAME statements.
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*
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* Copyright (c) 2010-2012, Justin Swanhart
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* with contributions by André Rothe <arothe@phosco.info, phosco@gmx.de>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*/
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require_once(dirname(__FILE__) . '/AbstractProcessor.php');
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require_once(dirname(__FILE__) . '/../utils/ExpressionToken.php');
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require_once(dirname(__FILE__) . '/../utils/ExpressionType.php');
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/**
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*
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* This class processes the RENAME statements.
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*
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* @author arothe
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*
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*/
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class RenameProcessor extends AbstractProcessor {
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public function process($tokenList) {
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$base_expr = "";
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$resultList = array();
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$tablePair = array();
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foreach ($tokenList as $k => $v) {
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$token = new ExpressionToken($k, $v);
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if ($token->isWhitespaceToken()) {
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continue;
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}
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switch ($token->getUpper()) {
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case 'TO':
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// separate source table from destination
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$tablePair['source'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr),
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'no_quotes' => $this->revokeQuotation($base_expr),
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'base_expr' => $base_expr);
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$base_expr = "";
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break;
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case ',':
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// split rename operations
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$tablePair['destination'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr),
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'no_quotes' => $this->revokeQuotation($base_expr),
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'base_expr' => $base_expr);
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$resultList[] = $tablePair;
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$tablePair = array();
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$base_expr = "";
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break;
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default:
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$base_expr .= $token->getToken();
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break;
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}
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}
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if ($base_expr !== "") {
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$tablePair['destination'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr),
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'no_quotes' => $this->revokeQuotation($base_expr),
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'base_expr' => $base_expr);
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$resultList[] = $tablePair;
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}
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return $resultList;
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}
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}
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?>
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