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Root/pluf/src/Pluf/Middleware/Debug.php

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<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */
 
/**
 * Debug middleware.
 *
 * Simply display small debug information at the end of the page. It
 * requires the xdebug extension.
 */
class Pluf_Middleware_Debug
{
    /**
     * Process the response of a view.
     *
     * If the status code and content type are allowed, add the debug
     * information. Debug must be set to true in the config file to
     * active it.
     *
     * @param Pluf_HTTP_Request The request
     * @param Pluf_HTTP_Response The response
     * @return Pluf_HTTP_Response The response
     */
    function process_response($request, $response)
    {
        if (!Pluf::f('debug', false)) {
            return $response;
        }
        if (!in_array($response->status_code,
                     array(200, 201, 202, 203, 204, 205, 206, 404, 501))) {
            return $response;
        }
        $ok = false;
        $cts = array('text/html', 'text/html', 'application/xhtml+xml');
        foreach ($cts as $ct) {
            if (false !== strripos($response->headers['Content-Type'], $ct)) {
                $ok = true;
                break;
            }
        }
        if ($ok == false) {
            return $response;
        }
        $js = '<script type="text/javascript">
// <!--
    function pxDebugGetElementsByClassName(oElm, strTagName, strClassName){
        // Written by Jonathan Snook, http://www.snook.ca/jon;
        // Add-ons by Robert Nyman, http://www.robertnyman.com
        var arrElements = (strTagName == "*" && document.all)? document.all :
        oElm.getElementsByTagName(strTagName);
        var arrReturnElements = new Array();
        strClassName = strClassName.replace(/\-/g, "\\-");
        var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
        var oElement;
        for(var i=0; i<arrElements.length; i++){
            oElement = arrElements[i];
            if(oRegExp.test(oElement.className)){
                arrReturnElements.push(oElement);
            }
        }
        return (arrReturnElements)
    }
    function pxDebugHideAll(elems) {
      for (var e = 0; e < elems.length; e++) {
        elems[e].style.display = \'none\';
      }
    }
    function pxDebugToggle() {
      for (var i = 0; i < arguments.length; i++) {
        var e = document.getElementById(arguments[i]);
        if (e) {
          e.style.display = e.style.display == \'none\' ? \'block\' : \'none\';
        }
      }
      return false;
    }
// -->
  </script>';
        $text = '<pre style="text-align: left;">';
        $text .= 'Peak mem: '.(int)(memory_get_peak_usage()/1024).'kB'."\n";
        $text .= 'Exec time: '.sprintf('%.5f', (microtime(true) - $GLOBALS['_PX_starttime'])).'s'."\n";
        $included_files = get_included_files();
        sort($included_files);
        $text .= '<a href=\'#\' onclick="return pxDebugToggle(\'debug-included-files\')">';
        $text .= 'Included files #: '.count($included_files);
        $text .= '</a></pre>'."\n";
        $text .= $js.'<div id="debug-included-files" class="debug-queries"><pre style="text-align: left;">';
        foreach ($included_files as $filename) {
            $text .= htmlspecialchars($filename)."\n";
        }
        $text .= '</pre></div>';
        if (isset($GLOBALS['_PX_debug_data']['sql_queries'])) {
            $text .= '<pre style="text-align: left;">';           
            $text .= '<a href=\'#\' onclick="return pxDebugToggle(\'debug-queries\')">';
            $text .= 'DB query #: '.count($GLOBALS['_PX_debug_data']['sql_queries']);
            $text .= '</a>'."\n\n";
            $text .= '</pre>';
            $text .= '<div id="debug-queries" class="debug-queries"><pre style="text-align: left;">';
            foreach ($GLOBALS['_PX_debug_data']['sql_queries'] as $q) {
                $text .= htmlspecialchars($q)."\n";
            }
            $text .= '</pre></div>';
        } else {
            $text .= '</pre>';
        }
        $text .= '<script type="text/javascript">
      pxDebugHideAll(pxDebugGetElementsByClassName(document, \'div\', \'debug-queries\'));
            </script>';
 
        $response->content = str_replace('</body>', $text.'</body>', $response->content);
        return $response;
    }
}

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