151 lines
4.6 KiB
PHP
151 lines
4.6 KiB
PHP
<?php
|
|
/**
|
|
* PHPSQLParserUtils.php
|
|
*
|
|
* These are utility functions for the PHPSQLParser.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* This class implements some helper functions.
|
|
*
|
|
* @author arothe
|
|
* @deprecated
|
|
*/
|
|
class PHPSQLParserUtils {
|
|
|
|
/**
|
|
* Prints an array only if debug mode is on.
|
|
*
|
|
* @param array $s
|
|
* @param boolean $return, if true, the formatted array is returned via return parameter
|
|
*/
|
|
protected function preprint($arr, $return = false) {
|
|
$x = "<pre>";
|
|
$x .= print_r($arr, 1);
|
|
$x .= "</pre>";
|
|
if ($return) {
|
|
return $x;
|
|
} else {
|
|
if (isset($_ENV['DEBUG'])) {
|
|
print $x . "\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Ends the given string $haystack with the string $needle?
|
|
*
|
|
* @param string $haystack
|
|
* @param string $needle
|
|
*/
|
|
protected function endsWith($haystack, $needle) {
|
|
$length = strlen($needle);
|
|
if ($length == 0) {
|
|
return true;
|
|
}
|
|
return (substr($haystack, -$length) === $needle);
|
|
}
|
|
|
|
/**
|
|
* Revokes the quoting characters from an expression
|
|
*/
|
|
protected function revokeQuotation($sql) {
|
|
$result = trim($sql);
|
|
if (($result[0] === '`') && ($result[strlen($result) - 1] === '`')) {
|
|
$result = substr($result, 1, -1);
|
|
return trim(str_replace('``', '`', $result));
|
|
}
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* This method removes parenthesis from start of the given string.
|
|
* It removes also the associated closing parenthesis.
|
|
*/
|
|
protected function removeParenthesisFromStart($token) {
|
|
|
|
$parenthesisRemoved = 0;
|
|
|
|
$trim = trim($token);
|
|
if ($trim !== "" && $trim[0] === "(") { // remove only one parenthesis pair now!
|
|
$parenthesisRemoved++;
|
|
$trim[0] = " ";
|
|
$trim = trim($trim);
|
|
}
|
|
|
|
$parenthesis = $parenthesisRemoved;
|
|
$i = 0;
|
|
$string = 0;
|
|
while ($i < strlen($trim)) {
|
|
|
|
if ($trim[$i] === "\\") {
|
|
$i += 2; # an escape character, the next character is irrelevant
|
|
continue;
|
|
}
|
|
|
|
if ($trim[$i] === "'" || $trim[$i] === '"') {
|
|
$string++;
|
|
}
|
|
|
|
if (($string % 2 === 0) && ($trim[$i] === "(")) {
|
|
$parenthesis++;
|
|
}
|
|
|
|
if (($string % 2 === 0) && ($trim[$i] === ")")) {
|
|
if ($parenthesis == $parenthesisRemoved) {
|
|
$trim[$i] = " ";
|
|
$parenthesisRemoved--;
|
|
}
|
|
$parenthesis--;
|
|
}
|
|
$i++;
|
|
}
|
|
return trim($trim);
|
|
}
|
|
|
|
public function getLastOf($array) {
|
|
// $array is a copy of the original array, so we can change it without sideeffects
|
|
if (!is_array($array)) {
|
|
return false;
|
|
}
|
|
return array_pop($array);
|
|
}
|
|
|
|
/**
|
|
* translates an array of objects into an associative array
|
|
*/
|
|
public function toArray($tokenList) {
|
|
$expr = array();
|
|
foreach ($tokenList as $token) {
|
|
$expr[] = $token->toArray();
|
|
}
|
|
return (empty($expr) ? false : $expr);
|
|
}
|
|
}
|
|
?>
|