mirror of
https://github.com/e107inc/e107.git
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300 lines
9.6 KiB
PHP
300 lines
9.6 KiB
PHP
<?php
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/*
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* e107 website system
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*
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* Copyright (c) 2001-2008 e107 Developers (e107.org)
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* Released under the terms and conditions of the
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* GNU General Public License (http://gnu.org).
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*
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* $Source: /cvs_backup/e107_0.8/e107_handlers/jslib_handler.php,v $
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* $Revision: 1.7 $
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* $Date: 2009-10-02 13:46:25 $
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* $Author: secretr $
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*
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*/
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global $pref, $eplug_admin, $THEME_JSLIB, $THEME_CORE_JSLIB;
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class e_jslib
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{
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function __construct()
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{
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}
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/**
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* Collect & output all available JS libraries (requires e107 API)
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* FIXME
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* - cache jslib in a pref on plugin/theme install only (plugin.xml, theme.xml)
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* - [done - e_jslib_*] the structure of the cached pref array?
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* - [done - js manager] kill all dupps
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* - jslib settings - Administration area (compression on/off, admin log on/off
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* manual control for included JS - really not sure about this,
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* Force Browser Cache refresh - timestamp added to the url hash)
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* - how and when to add JS lans for core libraries?
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* - [done - js manager] separate methods for collecting & storing JS files (to be used in install/update routines) and output the JS content
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*/
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function core_run()
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{
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//global $pref, $eplug_admin, $THEME_JSLIB, $THEME_CORE_JSLIB;
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ob_start();
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ob_implicit_flush(0);
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$e_jsmanager = e107::getJs();
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$lmodified = array();
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$e_jsmanager->renderJs('core', null, false);
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$lmodified[] = $e_jsmanager->getLastModfied('core');
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$e_jsmanager->renderJs('plugin', null, false);
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$lmodified[] = $e_jsmanager->getLastModfied('plugin');
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$e_jsmanager->renderJs('theme', null, false);
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$lmodified[] = $e_jsmanager->getLastModfied('theme');
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$lmodified[] = $e_jsmanager->getCacheId(); //e107::getPref('e_jslib_browser_cache', 0)
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// last modification time for loaded files
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$lmodified = max($lmodified);
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if (function_exists('date_default_timezone_set'))
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{
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date_default_timezone_set('UTC');
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}
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// If-Modified check only if cache disabled
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// if cache is enabled, cache file modification date is set to $lmodified
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if(!e107::getPref('syscachestatus'))
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{
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// not modified - send 304 and exit
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if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lmodified)
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{
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header("HTTP/1.1 304 Not Modified", true);
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exit;
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}
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}
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// send last modified date
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header('Cache-Control: must-revalidate');
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header('Last-modified: '.gmdate('r', $lmodified), true);
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// send content type
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header('Content-type: text/javascript', true);
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// Expire header - 1 year
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$time = time()+ 365 * 86400;
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header('Expires: '.gmdate('r', $time), true);
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//Output
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$this->content_out($lmodified);
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/*
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//array - uses the same format as $core_jslib
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if (!isset($THEME_CORE_JSLIB) || ! is_array($THEME_CORE_JSLIB))
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$THEME_CORE_JSLIB = array();
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//array - uses the same format as $core_jslib
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if (!isset($THEME_JSLIB) || ! is_array($THEME_JSLIB))
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$THEME_JSLIB = array();
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//available values - admin,front,all,none
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$core_jslib = array( //FIXME - core jslib prefs, debug options
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'jslib/prototype/prototype.js' => 'all' ,
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'jslib/scriptaculous/scriptaculous.js' => 'all',
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'jslib/scriptaculous/effects.js' => 'all',
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'jslib/e107.js.php' => 'all'
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//'jslib/core/decorate.js' => 'all'
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);
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$core_jslib = array_merge($core_jslib, $THEME_CORE_JSLIB, varsettrue($pref['e_jslib_core'], array()));
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$where_now = $eplug_admin ? 'admin' : 'front';
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//1. Core libs - prototype + scriptaculous effects
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echo "// Prototype/Scriptaculous/Core libraries \n";
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foreach ($core_jslib as $core_path => $where)
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{
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if ($where != 'all' && $where != $where_now)
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continue;
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if (substr($core_path, - 4) == '.php')
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{
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include_once (e_FILE . '/' . trim($core_path, '/'));
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echo "\n\n";
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}
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else
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{
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echo file_get_contents(e_FILE . '/' . trim($core_path, '/'));
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echo "\n\n";
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}
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}
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//2. Plugins output - all 3-rd party libs
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if (varsettrue($pref['e_jslib_plugin']))
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{
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foreach ($pref['e_jslib_plugin'] as $plugin_name => $plugin_libs)
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{
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if ($plugin_libs)
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{
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foreach ($plugin_libs as $plugin_lib => $where)
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{
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//available values - admin,front,all
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if ($where != 'all' && $where != $where_now)
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continue;
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$lib_path = $plugin_name . '/' . trim($plugin_lib, '/');
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echo "// $plugin_name libraries \n\n";
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if (substr($plugin_lib, - 4) == '.php')
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{
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include_once (e_PLUGIN . $lib_path);
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echo "\n\n";
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}
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else
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{
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echo file_get_contents(e_PLUGIN . $lib_path);
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echo "\n\n";
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}
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}
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}
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}
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}
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//3. Theme libs
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if (varset($THEME_JSLIB) && is_array($THEME_JSLIB))
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{
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echo "// Theme libraries \n\n";
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foreach ($THEME_JSLIB as $lib_path => $where)
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{
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if ($where != 'all' && $where != $where_now)
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continue;
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if (substr($lib_path, - 4) == '.php')
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{
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include_once (THEME . '/' . trim($lib_path, '/'));
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echo "\n\n";
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}
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else
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{
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echo file_get_contents(THEME . '/' . trim($lib_path, '/'));
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echo "\n\n";
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}
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}
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}
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*/
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}
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/**
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* Output buffered content (requires e107 API)
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*
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*/
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function content_out($lmodified)
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{
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global $pref, $admin_log;
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$encoding = $this->browser_enc();
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$contents = ob_get_contents();
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ob_end_clean();
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if ($encoding)
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{
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$gzdata = "\x1f\x8b\x08\x00\x00\x00\x00\x00";
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$size = strlen($contents);
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$crc = crc32($contents);
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$gzdata .= gzcompress($contents, 9);
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$gzdata = substr($gzdata, 0, strlen($gzdata) - 4);
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$gzdata .= pack("V", $crc) . pack("V", $size);
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$gsize = strlen($gzdata);
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$this->set_cache($gzdata, $encoding, $lmodified);
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header('Content-Encoding: ' . $encoding);
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//header('Content-Length: '.$gsize);
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header('X-Content-size: ' . $size);
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print($gzdata);
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//TODO - log/debug
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//@file_put_contents('cache/e_jslib_log', "----------\n cache used - ".$encoding."\nOld size - $size, New compressed size - $gsize\nCache hash: ".($_SERVER['QUERY_STRING'] ? md5($_SERVER['QUERY_STRING']) : 'nomd5')."\n\n", FILE_APPEND);
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}
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else
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{
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//header('Content-Length: '.strlen($contents));
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$this->set_cache($contents, '', $lmodified);
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print($contents);
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//TODO - log/debug
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//@file_put_contents('cache/e_jslib_log', "----------\nno cache used - raw\n\n", FILE_APPEND);
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}
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exit();
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}
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/**
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* Set Server Cache - create jslib[gzip-string][hash].js
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* (requires e107 API)
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*
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* @param string $contents
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* @param string $encoding browser accepted encoding
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* @param integer $lmodified last modfied time
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*/
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function set_cache($contents, $encoding = '', $lmodified = 0)
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{
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if (e107::getPref('syscachestatus'))
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{
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$cacheFile = $this->cache_filename($encoding);
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if(!$lmodified) $lmodified = time();
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@file_put_contents($cacheFile, $contents);
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@chmod($cacheFile, 0775);
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@touch($cacheFile, $lmodified);
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}
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}
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/**
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* Detect browser accepted encoding (doesn't require e107 API)
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*
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* @return string encoding
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*/
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function browser_enc()
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{
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//NEW - option to disable completely gzip compression
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if(strpos($_SERVER['QUERY_STRING'], '_nogzip'))
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{
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return '';
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}
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//double-compression fix - thanks Topper
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if (headers_sent() || ini_get('zlib.output_compression') || !isset($_SERVER["HTTP_ACCEPT_ENCODING"]))
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{
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$encoding = '';
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}
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elseif (strpos($_SERVER["HTTP_ACCEPT_ENCODING"], 'x-gzip') !== false)
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{
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$encoding = 'x-gzip';
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}
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elseif (strpos($_SERVER["HTTP_ACCEPT_ENCODING"], 'gzip') !== false)
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{
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$encoding = 'gzip';
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}
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else
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{
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$encoding = '';
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}
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return $encoding;
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}
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/**
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* Create cache filename (doesn't require e107 API)
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*
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* @param string $encoding
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* @param string $cacheStr defaults to 'S_e_jslib'
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* @return string cache filename
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*/
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function cache_filename($encoding = '', $cacheStr = 'S_e_jslib')
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{
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$cacheDir = 'cache/';
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$hash = $_SERVER['QUERY_STRING'] && $_SERVER['QUERY_STRING'] !== '_nogzip' ? md5(str_replace('_nogzip', '', $_SERVER['QUERY_STRING'])) : 'nomd5';
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$cacheFile = $cacheDir . $cacheStr . ($encoding ? '_' . $encoding : '') . '_' . $hash . '.cache.php';
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return $cacheFile;
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}
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}
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?>
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