141 lines
3.6 KiB
PHP
141 lines
3.6 KiB
PHP
<?php
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/**
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* This file is part of the Froxlor project.
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* Copyright (c) 2003-2009 the SysCP Team (see authors).
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* Copyright (c) 2010 the Froxlor Team (see authors).
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*
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* For the full copyright and license information, please view the COPYING
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* file that was distributed with this source code. You can also view the
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* COPYING file online at http://files.froxlor.org/misc/COPYING.txt
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*
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* @copyright (c) the authors
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* @author Florian Lippert <flo@syscp.org> (2003-2009)
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* @author Froxlor team <team@froxlor.org> (2010-)
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* @license GPLv2 http://files.froxlor.org/misc/COPYING.txt
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* @package Functions
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* @version $Id$
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*/
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//
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// split_sql_file will split an uploaded sql file into single sql statements.
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// Note: expects trim() to have already been run on $sql
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// The whole function has been taken from the phpbb installer, copyright by the phpbb team, phpbb in summer 2004.
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//
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function split_sql_file($sql, $delimiter)
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{
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// Split up our string into "possible" SQL statements.
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$tokens = explode($delimiter, $sql);
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// try to save mem.
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$sql = "";
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$output = array();
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// we don't actually care about the matches preg gives us.
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$matches = array();
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// this is faster than calling count($oktens) every time thru the loop.
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$token_count = count($tokens);
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for ($i = 0;$i < $token_count;$i++)
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{
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// Don't wanna add an empty string as the last thing in the array.
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if(($i != ($token_count - 1))
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|| (strlen($tokens[$i] > 0)))
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{
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// This is the total number of single quotes in the token.
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$total_quotes = preg_match_all("/'/", $tokens[$i], $matches);
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// Counts single quotes that are preceded by an odd number of backslashes,
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// which means they're escaped quotes.
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$escaped_quotes = preg_match_all("/(?<!\\\\)(\\\\\\\\)*\\\\'/", $tokens[$i], $matches);
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$unescaped_quotes = $total_quotes - $escaped_quotes;
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// If the number of unescaped quotes is even, then the delimiter did NOT occur inside a string literal.
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if(($unescaped_quotes % 2) == 0)
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{
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// It's a complete sql statement.
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$output[] = $tokens[$i];
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// save memory.
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$tokens[$i] = "";
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}
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else
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{
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// incomplete sql statement. keep adding tokens until we have a complete one.
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// $temp will hold what we have so far.
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$temp = $tokens[$i] . $delimiter;
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// save memory..
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$tokens[$i] = "";
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// Do we have a complete statement yet?
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$complete_stmt = false;
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for ($j = $i + 1;(!$complete_stmt && ($j < $token_count));$j++)
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{
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// This is the total number of single quotes in the token.
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$total_quotes = preg_match_all("/'/", $tokens[$j], $matches);
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// Counts single quotes that are preceded by an odd number of backslashes,
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// which means they're escaped quotes.
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$escaped_quotes = preg_match_all("/(?<!\\\\)(\\\\\\\\)*\\\\'/", $tokens[$j], $matches);
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$unescaped_quotes = $total_quotes - $escaped_quotes;
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if(($unescaped_quotes % 2) == 1)
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{
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// odd number of unescaped quotes. In combination with the previous incomplete
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// statement(s), we now have a complete statement. (2 odds always make an even)
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$output[] = $temp . $tokens[$j];
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// save memory.
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$tokens[$j] = "";
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$temp = "";
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// exit the loop.
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$complete_stmt = true;
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// make sure the outer loop continues at the right point.
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$i = $j;
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}
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else
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{
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// even number of unescaped quotes. We still don't have a complete statement.
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// (1 odd and 1 even always make an odd)
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$temp.= $tokens[$j] . $delimiter;
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// save memory.
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$tokens[$j] = "";
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}
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}
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// for..
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}
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// else
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}
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}
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return $output;
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}
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