%PDF-
%PDF-
Mini Shell
Mini Shell
<?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);
}
}
?>
Zerion Mini Shell 1.0