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<?php
/**
 * @version		$Id: debug.php 21433 2011-06-04 04:35:15Z eddieajau $
 * @copyright	Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */

// no direct access
defined('_JEXEC') or die;

jimport('joomla.plugin.plugin');

/**
 * Joomla! Debug plugin
 *
 * @package		Joomla.Plugin
 * @subpackage	System.debug
 */
class plgSystemDebug extends JPlugin
{
	/**
	 * Constructor
	 *
	 * @access	protected
	 * @param	object $subject The object to observe
	 * @param	array  $config  An array that holds the plugin configuration
	 * @since	1.5
	 */
	function __construct(&$subject, $config)
	{
		parent::__construct($subject, $config);

// Log the deprecated API.
		if ($this->params->get('log-deprecated')) {
			JLog::addLogger(array('text_file' => 'deprecated.php'), JLog::ALL, array('deprecated'));
		}

// Only if debugging is enabled
		if (JDEBUG) {
			$config  = JFactory::getConfig();
			$config->set('gzip', 0);
			ob_start();
			ob_implicit_flush(false);
		}
	}

/**
	* Show the debug info
	*
	*/
	function __destruct()
	{
		global $_PROFILER;

// Do not render if debugging is not enabled
		if (!JDEBUG) {
			return;
		}

if (!$_PROFILER instanceof JProfiler) {
			return;
		}

// Load the language
		$this->loadLanguage();

// Capture output
		$contents = ob_get_contents();
		ob_end_clean();

// No debug for Safari and Chrome redirection
		if (strstr(strtolower($_SERVER['HTTP_USER_AGENT']), 'webkit') !== false && substr($contents, 0, 50) == '<html><head><meta http-equiv="refresh" content="0;') {
			echo $contents;
			return;
		}

$document	= JFactory::getDocument();
		$doctype	= $document->getType();

// Only render for HTML output
		if ($doctype !== 'html') {
			echo $contents;
			return;
		}

// If the user is not allowed to view the output then end here
		$filterGroups = (array) $this->params->get('filter_groups', null);
		if (!empty($filterGroups)) {
			$userGroups = JFactory::getUser()->get('groups');
			if (!array_intersect($filterGroups, array_keys($userGroups))) {
				echo $contents;
				return;
			}
		}

// Load language file
		$this->loadLanguage('plg_system_debug');

$profiler	= &$_PROFILER;

ob_start();
		echo '<div id="system-debug" class="profiler">';
		$errors = JError::getErrors();

if (!empty($errors)) {
			echo '<h4>'.JText::_('PLG_DEBUG_ERRORS').'</h4><ol>';
			while($error = JError::getError(true)) {
				echo '<li>'.$error->getMessage().'<br /><h4>'.JText::_('PLG_DEBUG_INFO').'</h4><pre>'.print_r($error->get('info'), true).'</pre><br /><h4>'.JText::_('PLG_DEBUG_BACKTRACE').'</h4>'.JError::renderBacktrace($error).'</li>';
			}
			echo '</ol>';
		}

if ($this->params->get('profile', 1)) {
			echo '<h4>'.JText::_('PLG_DEBUG_PROFILE_INFORMATION').'</h4>';
			foreach ($profiler->getBuffer() as $mark) {
				echo '<div>'.$mark.'</div>';
			}
		}

if ($this->params->get('memory', 1)) {
			echo '<h4>'.JText::_('PLG_DEBUG_MEMORY_USAGE').'</h4>';
			$bytes = $profiler->getMemory();
			echo JHtml::_('number.bytes', $bytes);
			echo ' ('.number_format($bytes).' Bytes)';
		}

if ($this->params->get('queries', 1)) {
			$newlineKeywords = '#\b(FROM|LEFT|INNER|OUTER|WHERE|SET|VALUES|ORDER|GROUP|HAVING|LIMIT|ON|AND)\b#i';

$db	= JFactory::getDbo();

echo '<h4>'.JText::sprintf('PLG_DEBUG_QUERIES_LOGGED',  $db->getCount()).'</h4>';

if ($log = $db->getLog()) {
				echo '<ol>';
				$selectQueryTypeTicker = array();
				$otherQueryTypeTicker = array();
				foreach ($log as $k => $sql) {
					// Start Query Type Ticker Additions
					$fromStart = stripos($sql, 'from');
					$whereStart = stripos($sql, 'where', $fromStart);

if ($whereStart === false) {
						$whereStart = stripos($sql, 'order by', $fromStart);
					}

if ($whereStart === false) {
						$whereStart = strlen($sql) - 1;
					}

$fromString = substr($sql, 0, $whereStart);
					$fromString = str_replace("\t", " ", $fromString);
					$fromString = str_replace("\n", " ", $fromString);
					$fromString = trim($fromString);

// Initialize the select/other query type counts the first time:
					if (!isset($selectQueryTypeTicker[$fromString])) {
						$selectQueryTypeTicker[$fromString] = 0;
					}

if (!isset($otherQueryTypeTicker[$fromString])) {
						$otherQueryTypeTicker[$fromString] = 0;
					}

// Increment the count:
					if (stripos($sql, 'select') === 0) {
						$selectQueryTypeTicker[$fromString] = $selectQueryTypeTicker[$fromString] + 1;
						unset($otherQueryTypeTicker[$fromString]);
					}
					else {
						$otherQueryTypeTicker[$fromString] = $otherQueryTypeTicker[$fromString] + 1;
						unset($selectQueryTypeTicker[$fromString]);
					}
					// Finish Query Type Ticker Additions

$text = htmlspecialchars($sql, ENT_QUOTES);
					$text = preg_replace($newlineKeywords, '<br />  \\0', $text);
					echo '<li>'.$text.'</li>';
				}

echo '</ol>';

if ($this->params->get('query_types', 1)) {
					// Get the totals for the query types:
					$totalSelectQueryTypes = count($selectQueryTypeTicker);
					$totalOtherQueryTypes = count($otherQueryTypeTicker);
					$totalQueryTypes = $totalSelectQueryTypes + $totalOtherQueryTypes;

echo '<h4>'.JText::sprintf('PLG_DEBUG_QUERY_TYPES_LOGGED', $totalQueryTypes) . '</h4>';

if ($totalSelectQueryTypes) {
						echo '<h5>'.JText::sprintf('PLG_DEBUG_SELECT_QUERIES').'</h5>';
						arsort($selectQueryTypeTicker);
						echo '<ol>';

foreach($selectQueryTypeTicker as $table => $occurrences)
						{
							echo '<li>'.JText::sprintf('PLG_DEBUG_QUERY_TYPE_AND_OCCURRENCES', $table, $occurrences).'</li>';
						}

echo '</ol>';
					}

if ($totalOtherQueryTypes) {
						echo '<h5>'.JText::sprintf('PLG_DEBUG_OTHER_QUERIES').'</h5>';
						arsort($otherQueryTypeTicker);
						echo '<ol>';

foreach($otherQueryTypeTicker as $table => $occurrences)
						{
							echo '<li>'.JText::sprintf('PLG_DEBUG_QUERY_TYPE_AND_OCCURRENCES', $table, $occurrences).'</li>';
						}
						echo '</ol>';
					}
				}
			}
		}

// Show language debug only if enabled
		if (JFactory::getApplication()->getCfg('debug_lang')) {
			$lang = JFactory::getLanguage();

if ($this->params->get('language_errorfiles', 1)) {
				echo '<h4>'.JText::_('PLG_DEBUG_LANGUAGE_FILES_IN_ERROR').'</h4>';
				$errorfiles = $lang->getErrorFiles();

if (count($errorfiles)) {
					echo '<ul>';

foreach ($errorfiles as $file => $error)
					{
						echo "<li>$error</li>";
					}
					echo '</ul>';
				}
				else {
					echo '<pre>'.JText::_('JNONE').'</pre>';
				}
			}

if ($this->params->get('language_files', 1)) {
				echo '<h4>'.JText::_('PLG_DEBUG_LANGUAGE_FILES_LOADED').'</h4>';
				echo '<ul>';
				$extensions	= $lang->getPaths();

foreach ($extensions as $extension => $files)
				{
					foreach ($files as $file => $status)
					{
						echo "<li>$file $status</li>";
					}
				}
				echo '</ul>';
			}

if ($this->params->get('language_strings')) {
				$stripFirst	= $this->params->get('strip-first');
				$stripPref	= $this->params->get('strip-prefix');
				$stripSuff	= $this->params->get('strip-suffix');

echo '<h4>'.JText::_('PLG_DEBUG_UNTRANSLATED_STRINGS').'</h4>';
				echo '<pre>';
				$orphans = $lang->getOrphans();

if (count($orphans)) {
					ksort($orphans, SORT_STRING);
					$guesses = array();

foreach ($orphans as $key => $occurance)
					{
						if (is_array($occurance) AND isset($occurance[0])) {
							$info = &$occurance[0];
							$file = @$info['file'];

if (!isset($guesses[$file])) {
								$guesses[$file] = array();
							}

// Prepare the key

if (($pos = strpos($info['string'], '=')) > 0) {
								$parts	= explode('=', $info['string']);
								$key	= $parts[0];
								$guess	= $parts[1];

}
							else {
								$guess = str_replace('_', ' ', $info['string']);

if ($stripFirst) {
									$parts = explode(' ', $guess);
									if (count($parts) > 1) {
										array_shift($parts);
										$guess = implode(' ', $parts);
									}
								}

$guess = trim($guess);

if ($stripPref) {
									$guess = trim(preg_replace(chr(1).'^'.$stripPref.chr(1).'i', '', $guess));
								}

if ($stripSuff) {
									$guess = trim(preg_replace(chr(1).$stripSuff.'$'.chr(1).'i', '', $guess));
								}
							}

$key = trim(strtoupper($key));
							$key = preg_replace('#\s+#', '_', $key);
							$key = preg_replace('#\W#', '', $key);

// Prepare the text
							$guesses[$file][] = $key.'="'.$guess.'"';
						}
					}

foreach ($guesses as $file => $keys)
					{
						echo "\n\n# ".($file ? $file : JText::_('PLG_DEBUG_UNKNOWN_FILE'))."\n\n";
						echo implode("\n", $keys);
					}
				}
				else {
					echo JText::_('JNONE');
				}
				echo '</pre>';
			}
		}

echo '</div>';

$debug = ob_get_clean();

$body = JResponse::getBody();
		$body = str_replace('</body>', $debug.'</body>', $body);
		echo str_replace('</body>', $debug.'</body>', $contents);
	}
}