<?php
/*======================================================================*\
|| #################################################################### ||
|| # vBulletin 3.7.0
|| # ---------------------------------------------------------------- # ||
|| # Copyright ©2000-2008 Jelsoft Enterprises Ltd. All Rights Reserved. ||
|| # This file may not be redistributed in whole or significant part. # ||
|| # ---------------- VBULLETIN IS NOT FREE SOFTWARE ---------------- # ||
|| # http://www.vbulletin.com | http://www.vbulletin.com/license.html # ||
|| #################################################################### ||
\*======================================================================*/

if (!class_exists('vB_Database'))
{
	exit;
}

class vB_Database_Explain extends vB_Database
{
	var $message = '';
	var $prev_messages = '';

	var $message_title = array();

	var $memory_before = array();

	var $time_before = array();

	var $time_total = 0;

	var $explain = true;

	function output($str)
	{
		static $doneheader = false;

		if (!$doneheader)
		{
			$doneheader = true;
			echo '<html xmlns="http://www.w3.org/1999/xhtml">
			<head>
				<title>vBulletin</title>
				<style type="text/css">
				<!--
				body { color: black; background-color: #DDDDDD; }
				body, p, td, th { font-family: verdana, sans-serif; font-size: 10pt; text-align: left; }
				pre { padding: 8px; border: 1px solid; background: #F6F6F6; overflow: auto; }
				table { border: 1px solid black; border-collapse: collapse; }
				th { background: #F6F6F6; border: 1px solid black; }
				td { border: 1px solid black; }
				div.explain { border: 1px solid red; margin-bottom: 16px; }
				div.explaintitle { color: black; background-color: white; padding: 4px; font-weight: bold; border-bottom: 1px solid red; }
				div.explainbody { padding: 8px; color: black; background-color: white; }
				-->
				</style>
			</head>
			<body>';
		}

		$this->message .= $str;
	}

	function db_connect($servername, $port, $username, $password, $usepconnect, $configfile = '', $charset = '')
	{
		$this->timer_start("Connect to Database on Server: <em>$servername</em>");
		$return = parent::db_connect($servername, $port, $username, $password, $usepconnect, $configfile, $charset);
		$this->timer_stop();
		return $return;
	}

	function &execute_query($buffered = true, &$link)
	{
		if ($link == $this->connection_slave AND preg_match('#(^|\s)SELECT\s#s', $this->sql))
		{
			$this->explain_query();
		}
		else
		{
			$this->output("<pre>" . trim((preg_match('#(\n\s+)(UPDATE|INSERT|REPLACE)\s#s', $this->sql, $match) ? str_replace($match[1], "\n", $this->sql) : $this->sql)) . "</pre>");
		}

		$this->timer_start('SQL Query');
		$return = parent::execute_query($buffered, $link);
		$this->timer_stop();
		return $return;
	}

	function explain_query()
	{
		$this->output("<pre>" . trim((preg_match('#(\n\s+)SELECT\s#s', $this->sql, $match) ? str_replace($match[1], "\n", $this->sql) : $this->sql)) . "</pre>");

		$results = $this->functions['query']('EXPLAIN ' . $this->sql);
		$this->output('<table width="98%" cellpadding="2" cellspacing="1"><tr>');
		while ($field = $this->functions['fetch_field']($results))
		{
				$this->output('<th>' . $field->name . '</th>');
		}
		$this->output('</tr>');
		$numfields = $this->functions['num_fields']($results);
		while ($result = $this->fetch_row($results))
		{
			$this->output('<tr>');
			for ($i = 0; $i < $numfields; $i++)
			{
				$this->output("<td>" . ($result["$i"] == '' ? '&nbsp;' : $result["$i"]) . "</td>");
			}
			$this->output('</tr>');
		}
		$this->output('</table>');
	}


	function timer_start($str = '')
	{
		$this->message_title[] = $str;

		if (function_exists('memory_get_usage'))
		{
			$this->memory_before[] = memory_get_usage();
		}
		$this->time_before[] = microtime();
	}

	function timer_stop($add_total = true)
	{
		$time_after = microtime();

		$pagestart = explode(' ', TIMESTART); $pagestart = $pagestart[0] + $pagestart[1];

		$time_before = explode(' ', array_pop($this->time_before));
		$time_before = $time_before[0] + $time_before[1] - $pagestart;

		$time_after  = explode(' ', $time_after);
		$time_after  = $time_after[0]  + $time_after[1]  - $pagestart;

		$time_taken  = $time_after - $time_before;

		if ($add_total)
		{
			$this->time_total += $time_taken;
		}

		$this->output("<p>Time Before: " . number_format($time_before, 5) . " seconds<br />");
		$this->output("Time After: " . number_format($time_after, 5) . " seconds<br />");
		$this->output("Time Taken: " . number_format($time_taken, 5) . " seconds</p>");

		if (function_exists('memory_get_usage'))
		{
			$memory_before = array_pop($this->memory_before);
			$memory_after = memory_get_usage();

			$this->output("<p>Memory Before: " . number_format($memory_before / 1024, 3) . " KB<br />");
			$this->output("Memory After: " . number_format($memory_after / 1024, 3) . " KB<br />");
			$this->output("Memory Used: " . number_format(($memory_after - $memory_before) / 1024, 3) . " KB</p>");
		}

		//echo "<table class=\"explain\" cellpadding=\"4\" cellspacing=\"1\" width=\"100%\"><tr><th class=\"explain\">$this->message_title</th></tr><td class=\"explain\">" . $this->message . "</td></tr></table>";
		if (sizeof($this->message_title) == 1)
		{
			$this->message = $this->prev_messages . "\n" . $this->message;
		}

		$output = "<div class=\"explain\">
			<div class=\"explaintitle\">" . array_pop($this->message_title) . "</div>
			<div class=\"explainbody\">$this->message</div>
		</div>";

		if (sizeof($this->message_title) == 0)
		{
			echo $output;
			$this->prev_messages = '';
		}
		else
		{
			$this->prev_messages .= $output;
		}
		$this->message = '';
	}
}

class vB_Database_MySQLi_Explain extends vB_Database_MySQLi
{
	var $message = '';
	var $prev_messages = '';

	var $message_title = array();

	var $memory_before = array();

	var $time_before = array();

	var $time_total = 0;

	var $explain = true;

	function output($str)
	{
		static $doneheader = false;

		if (!$doneheader)
		{
			$doneheader = true;
			echo '<html>
			<head>
				<title>vBulletin</title>
				<style type="text/css">
				<!--
				body { color: black; background-color: #DDDDDD; }
				body, p, td, th { font-family: verdana, sans-serif; font-size: 10pt; text-align: left; }
				pre { padding: 8px; border: 1px solid; background: #F6F6F6; }
				table { border: 1px solid black; border-collapse: collapse; }
				th { background: #F6F6F6; border: 1px solid black; }
				td { border: 1px solid black; }
				div.explain { border: 1px solid red; margin-bottom: 16px; }
				div.explaintitle { color: black; background-color: white; padding: 4px; font-weight: bold; border-bottom: 1px solid red; }
				div.explainbody { padding: 8px; color: black; background-color: white; }
				-->
				</style>
			</head>
			<body>';
		}

		$this->message .= $str;
	}

	function db_connect($servername, $port, $username, $password, $usepconnect, $configfile = '', $charset = '')
	{
		$this->timer_start("Connect to Database on Server: <em>$servername</em>");
		$return = parent::db_connect($servername, $port, $username, $password, $usepconnect, $configfile, $charset);
		$this->timer_stop();
		return $return;
	}

	function &execute_query($buffered = true, &$link)
	{
		if ($link == $this->connection_slave AND preg_match('#^\s*SELECT\s#s', $this->sql))
		{
			$this->explain_query($link);
		}
		else
		{
			$this->output("<pre>" . trim((preg_match('#(\n\s+)(UPDATE|INSERT|REPLACE)\s#s', $this->sql, $match) ? str_replace($match[1], "\n", $this->sql) : $this->sql)) . "</pre>");
		}

		$this->timer_start('SQL Query');
		$return = parent::execute_query($buffered, $link);
		$this->timer_stop();
		return $return;
	}

	function explain_query(&$link)
	{
		$this->output("<pre>" . trim((preg_match('#(\n\s+)SELECT\s#s', $this->sql, $match) ? str_replace($match[1], "\n", $this->sql) : $this->sql)) . "</pre>");

		$results = $this->functions['query']($link, 'EXPLAIN ' . $this->sql);
		$this->output('<table width="98%" cellpadding="2" cellspacing="1"><tr>');
		while ($field = $this->functions['fetch_field']($results))
		{
				$this->output('<th>' . $field->name . '</th>');
		}
		$this->output('</tr>');
		$numfields = $this->functions['num_fields']($results);
		while ($result = $this->fetch_row($results))
		{
			$this->output('<tr>');
			for ($i = 0; $i < $numfields; $i++)
			{
				$this->output("<td>" . ($result["$i"] == '' ? '&nbsp;' : $result["$i"]) . "</td>");
			}
			$this->output('</tr>');
		}
		$this->output('</table>');
	}

	function timer_start($str = '')
	{
		$this->message_title[] = $str;

		if (function_exists('memory_get_usage'))
		{
			$this->memory_before[] = memory_get_usage();
		}
		$this->time_before[] = microtime();
	}

	function timer_stop($add_total = true)
	{
		$time_after = microtime();

		$pagestart = explode(' ', TIMESTART); $pagestart = $pagestart[0] + $pagestart[1];

		$time_before = explode(' ', array_pop($this->time_before));
		$time_before = $time_before[0] + $time_before[1] - $pagestart;

		$time_after  = explode(' ', $time_after);
		$time_after  = $time_after[0]  + $time_after[1]  - $pagestart;

		$time_taken  = $time_after - $time_before;

		if ($add_total)
		{
			$this->time_total += $time_taken;
		}

		$this->output("<p>Time Before: " . number_format($time_before, 5) . " seconds<br />");
		$this->output("Time After: " . number_format($time_after, 5) . " seconds<br />");
		$this->output("Time Taken: " . number_format($time_taken, 5) . " seconds</p>");

		if (function_exists('memory_get_usage'))
		{
			$memory_before = array_pop($this->memory_before);
			$memory_after = memory_get_usage();

			$this->output("<p>Memory Before: " . number_format($memory_before / 1024, 3) . " KB<br />");
			$this->output("Memory After: " . number_format($memory_after / 1024, 3) . " KB<br />");
			$this->output("Memory Used: " . number_format(($memory_after - $memory_before) / 1024, 3) . " KB</p>");
		}

		//echo "<table class=\"explain\" cellpadding=\"4\" cellspacing=\"1\" width=\"100%\"><tr><th class=\"explain\">$this->message_title</th></tr><td class=\"explain\">" . $this->message . "</td></tr></table>";
		if (sizeof($this->message_title) == 1)
		{
			$this->message = $this->prev_messages . "\n" . $this->message;
		}

		$output = "<div class=\"explain\">
			<div class=\"explaintitle\">" . array_pop($this->message_title) . "</div>
			<div class=\"explainbody\">$this->message</div>
		</div>";

		if (sizeof($this->message_title) == 0)
		{
			echo $output;
			$this->prev_messages = '';
		}
		else
		{
			$this->prev_messages .= $output;
		}
		$this->message = '';
	}
}

/*======================================================================*\
|| ####################################################################

|| # CVS: $RCSfile$ - $Revision: 24797 $
|| ####################################################################
\*======================================================================*/
?>