Initial commit
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490
typo3conf/ext/scriptmerger/Classes/ScriptmergerJavascript.php
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490
typo3conf/ext/scriptmerger/Classes/ScriptmergerJavascript.php
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<?php
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namespace SGalinski\Scriptmerger;
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/***************************************************************
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* Copyright notice
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*
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* (c) Stefan Galinski <stefan@sgalinski.de>
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* All rights reserved
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*
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* This script is part of the TYPO3 project. The TYPO3 project is
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* free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The GNU General Public License can be found at
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* http://www.gnu.org/copyleft/gpl.html.
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*
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* This script is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This copyright notice MUST APPEAR in all copies of the script!
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***************************************************************/
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use JShrink\Minifier;
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use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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/**
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* This class contains the parsing and replacing functionality for javascript files
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*/
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class ScriptmergerJavascript extends ScriptmergerBase {
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/**
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* holds the javascript code
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*
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* Structure:
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* - $file
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* |-content => string
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* |-basename => string (base name of $file without file prefix)
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* |-minify-ignore => bool
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* |-merge-ignore => bool
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*
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* @var array
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*/
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protected $javascript = array();
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/**
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* Controller for the processing of the javascript files.
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*
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* @return void
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*/
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public function process() {
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// fetch all javascript content
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$this->getFiles();
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// minify, compress and merging
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foreach ($this->javascript as $section => $javascriptBySection) {
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$mergedContent = '';
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$positionOfMergedFile = NULL;
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foreach ($javascriptBySection as $index => $javascriptProperties) {
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$newFile = '';
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// file should be minified
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if ($this->configuration['javascript.']['minify.']['enable'] === '1' &&
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!$javascriptProperties['minify-ignore']
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) {
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$newFile = $this->minifyFile($javascriptProperties);
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}
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// file should be merged
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if ($this->configuration['javascript.']['merge.']['enable'] === '1' &&
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!$javascriptProperties['merge-ignore']
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) {
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if ($positionOfMergedFile === NULL) {
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$positionOfMergedFile = $javascriptProperties['position-key'];
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}
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$mergedContent .= $javascriptProperties['content'] . LF;
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unset($this->javascript[$section][$index]);
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continue;
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}
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// file should be compressed instead?
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if ($this->configuration['javascript.']['compress.']['enable'] === '1' &&
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function_exists('gzcompress') && !$javascriptProperties['compress-ignore']
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) {
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$newFile = $this->compressFile($javascriptProperties);
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}
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// minification or compression was used
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if ($newFile !== '') {
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$this->javascript[$section][$index]['file'] = $newFile;
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$this->javascript[$section][$index]['content'] =
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$javascriptProperties['content'];
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$this->javascript[$section][$index]['basename'] =
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$javascriptProperties['basename'];
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}
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}
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// save merged content inside a new file
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if ($this->configuration['javascript.']['merge.']['enable'] === '1' && $mergedContent !== '') {
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// create property array
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$properties = array(
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'content' => $mergedContent,
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'basename' => $section . '-' . md5($mergedContent) . '.merged'
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);
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// write merged file in any case
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$newFile = $this->tempDirectories['merged'] . $properties['basename'] . '.js';
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if (!file_exists($newFile)) {
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$this->writeFile($newFile, $properties['content']);
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}
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// file should be compressed
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if ($this->configuration['javascript.']['compress.']['enable'] === '1' &&
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function_exists('gzcompress')
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) {
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$newFile = $this->compressFile($properties);
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}
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// add new entry
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$this->javascript[$section][] = array(
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'file' => $newFile,
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'content' => $properties['content'],
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'basename' => $properties['basename'],
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'position-key' => $positionOfMergedFile,
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);
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}
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}
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// write javascript content back to the document
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$this->writeToDocument();
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}
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/**
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* This method parses the output content and saves any found javascript files or inline code
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* into the "javascript" class property. The output content is cleaned up of the found results.
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*
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* @return array js files
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*/
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protected function getFiles() {
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// init
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$javascriptTags = array(
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'head' => array(),
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'body' => array()
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);
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// create search pattern
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$searchScriptsPattern = '/' .
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'<script' . // This expression includes any script nodes.
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'(?=.+?(?:src="(.*?)"|>))' . // It fetches the src attribute.
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'(?=.+?(?:data-ignore="(.*?)"|>))' . // and the data-ignore attribute of the tag.
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'[^>]*?>' . // Finally we finish the parsing of the opening tag
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'.*?<\/script>\s*' . // until the closing tag.
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'/is';
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// filter pattern for the inDoc scripts (fetches the content)
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$filterInDocumentPattern = '/' .
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'<script.*?>' . // The expression removes the opening script tag
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'(?:.*?\/\*<!\[CDATA\[\*\/)?' . // and the optionally prefixed CDATA string.
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'(?:.*?<!--)?' . // senseless <!-- construct
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'\s*(.*?)' . // We save the pure js content,
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'(?:\s*\/\/\s*-->)?' . // senseless <!-- construct
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'(?:\s*\/\*\]\]>\*\/)?' . // remove the possible closing CDATA string
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'\s*<\/script>' . // and closing script tag
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'/is';
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// parse scripts in the head
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$head = array();
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preg_match('/<head>.+?<\/head>/is', $GLOBALS['TSFE']->content, $head);
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$head = $oldHead = $head[0];
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preg_match_all($searchScriptsPattern, $head, $javascriptTags['head']);
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$amountOfScriptTags = count($javascriptTags['head'][0]);
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if ($amountOfScriptTags) {
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$function = create_function('', 'static $i = 0; return \'###MERGER-head\' . $i++ . \'MERGER###\';');
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$head = preg_replace_callback($searchScriptsPattern, $function, $head, $amountOfScriptTags);
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$GLOBALS['TSFE']->content = str_replace($oldHead, $head, $GLOBALS['TSFE']->content);
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}
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// parse scripts in the body
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if ($this->configuration['javascript.']['parseBody'] === '1') {
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$body = array();
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preg_match('/<body.*>.+?<\/body>/is', $GLOBALS['TSFE']->content, $body);
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$body = $oldBody = $body[0];
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preg_match_all($searchScriptsPattern, $body, $javascriptTags['body']);
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$amountOfScriptTags = count($javascriptTags['body'][0]);
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if ($amountOfScriptTags) {
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$function = create_function('', 'static $i = 0; return \'###MERGER-body\' . $i++ . \'MERGER###\';');
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$body = preg_replace_callback($searchScriptsPattern, $function, $body, $amountOfScriptTags);
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$GLOBALS['TSFE']->content = str_replace($oldBody, $body, $GLOBALS['TSFE']->content);
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}
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}
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foreach ($javascriptTags as $section => $results) {
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$amountOfResults = count($results[0]);
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for ($i = 0; $i < $amountOfResults; ++$i) {
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// get source attribute
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$source = trim($results[1][$i]);
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$isSourceFromMainAttribute = FALSE;
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if ($source !== '') {
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preg_match('/^<script([^>]*)>/', trim($results[0][$i]), $scriptAttribute);
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$isSourceFromMainAttribute = (strpos($scriptAttribute[1], $source) !== FALSE);
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}
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$ignoreDataFlagSet = intval($results[2][$i]);
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// add basic entry
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$this->javascript[$section][$i]['minify-ignore'] = FALSE;
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$this->javascript[$section][$i]['compress-ignore'] = FALSE;
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$this->javascript[$section][$i]['merge-ignore'] = FALSE;
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$this->javascript[$section][$i]['addInDocument'] = FALSE;
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$this->javascript[$section][$i]['useOriginalCodeLine'] = FALSE;
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$this->javascript[$section][$i]['file'] = $source;
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$this->javascript[$section][$i]['content'] = '';
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$this->javascript[$section][$i]['basename'] = '';
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$this->javascript[$section][$i]['position-key'] = $i;
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$this->javascript[$section][$i]['original'] = $results[0][$i];
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if ($isSourceFromMainAttribute) {
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// try to fetch the content of the css file
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$file = $source;
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if ($GLOBALS['TSFE']->absRefPrefix !== '' && strpos($file, $GLOBALS['TSFE']->absRefPrefix) === 0) {
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$file = substr($file, strlen($GLOBALS['TSFE']->absRefPrefix) - 1);
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}
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$file = PATH_site . $file;
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if (file_exists($file)) {
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$content = file_get_contents($file);
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} else {
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$content = $this->getExternalFile($source, TRUE);
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}
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// ignore this file if the content could not be fetched
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if (trim($content) === '' || $ignoreDataFlagSet) {
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$this->javascript[$section][$i]['minify-ignore'] = TRUE;
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$this->javascript[$section][$i]['compress-ignore'] = TRUE;
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$this->javascript[$section][$i]['merge-ignore'] = TRUE;
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$this->javascript[$section][$i]['useOriginalCodeLine'] = TRUE;
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continue;
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}
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// check if the file should be ignored for some processes
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$amountOfIgnores = 0;
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if ($this->configuration['javascript.']['minify.']['ignore'] !== '' &&
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preg_match($this->configuration['javascript.']['minify.']['ignore'], $source)
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) {
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$this->javascript[$section][$i]['minify-ignore'] = TRUE;
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++$amountOfIgnores;
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}
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if ($this->configuration['javascript.']['compress.']['ignore'] !== '' &&
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preg_match($this->configuration['javascript.']['compress.']['ignore'], $source)
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) {
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$this->javascript[$section][$i]['compress-ignore'] = TRUE;
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++$amountOfIgnores;
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}
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if ($this->configuration['javascript.']['merge.']['ignore'] !== '' &&
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preg_match($this->configuration['javascript.']['merge.']['ignore'], $source)
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) {
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$this->javascript[$section][$i]['merge-ignore'] = TRUE;
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++$amountOfIgnores;
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}
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if ($amountOfIgnores === 3) {
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$this->javascript[$section][$i]['useOriginalCodeLine'] = TRUE;
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}
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// set the javascript file with it's content
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$this->javascript[$section][$i]['file'] = $source;
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$this->javascript[$section][$i]['content'] = $content;
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// get base name for later usage
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// base name without file prefix and prefixed hash of the content
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$filename = basename($source);
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$hash = md5($content);
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$this->javascript[$section][$i]['basename'] =
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substr($filename, 0, strrpos($filename, '.')) . '-' . $hash;
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} else {
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// scripts which are added inside the document must be parsed again
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// to fetch the pure js code
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$javascriptContent = array();
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preg_match_all($filterInDocumentPattern, $results[0][$i], $javascriptContent);
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// we doesn't need to continue if it was an empty script tag
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if ($javascriptContent[1][0] === '') {
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unset($this->javascript[$section][$i]);
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continue;
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}
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$doNotRemoveinDocInBody =
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($this->configuration['javascript.']['doNotRemoveInDocInBody'] === '1' && $section === 'body');
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$doNotRemoveinDocInHead =
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($this->configuration['javascript.']['doNotRemoveInDocInHead'] === '1' && $section === 'head');
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if ($doNotRemoveinDocInHead || $doNotRemoveinDocInBody || $ignoreDataFlagSet) {
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$this->javascript[$section][$i]['minify-ignore'] = TRUE;
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$this->javascript[$section][$i]['compress-ignore'] = TRUE;
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$this->javascript[$section][$i]['merge-ignore'] = TRUE;
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$this->javascript[$section][$i]['useOriginalCodeLine'] = TRUE;
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$this->javascript[$section][$i]['addInDocument'] = TRUE;
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$this->javascript[$section][$i]['content'] = $javascriptContent[1][0];
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continue;
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}
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// save the content into a temporary file
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$hash = md5($javascriptContent[1][0]);
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$source = $this->tempDirectories['temp'] . 'inDocument-' . $hash;
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if (!file_exists($source . '.js')) {
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$this->writeFile($source . '.js', $javascriptContent[1][0]);
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}
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$this->javascript[$section][$i]['file'] = $source . '.js';
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$this->javascript[$section][$i]['content'] = $javascriptContent[1][0];
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$this->javascript[$section][$i]['basename'] = basename($source);
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}
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}
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}
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}
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/**
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* This method minifies a javascript file. It's based upon the JSMin+ class
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* of the project minify. Alternatively the old JSMin class can be used, but it's
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* definitely not the preferred solution!
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*
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* @param array $properties properties of an entry (copy-by-reference is used!)
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* @return string new filename
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*/
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protected function minifyFile(&$properties) {
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// stop further processing if the file already exists
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$newFile = $this->tempDirectories['minified'] . $properties['basename'] . '.min.js';
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if (file_exists($newFile)) {
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$properties['basename'] .= '.min';
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$properties['content'] = file_get_contents($newFile);
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return $newFile;
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}
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// check for conditional compilation code to fix an issue with jsmin+
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$hasConditionalCompilation = FALSE;
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if ($this->configuration['javascript.']['minify.']['useJSMinPlus'] === '1') {
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$hasConditionalCompilation = preg_match('/\/\*@cc_on/is', $properties['content']);
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}
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// minify content (the ending semicolon must be added to prevent minimisation bugs)
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$hasErrors = FALSE;
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$minifiedContent = '';
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try {
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if (!$hasConditionalCompilation && $this->configuration['javascript.']['minify.']['useJShrink'] === '1') {
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if (!class_exists('JShrink\Minifier', FALSE)) {
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require_once(ExtensionManagementUtility::extPath('scriptmerger') . 'Resources/JShrink/Minifier.php');
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}
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$minifiedContent = Minifier::minify($properties['content']);
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} elseif (!$hasConditionalCompilation && $this->configuration['javascript.']['minify.']['useJSMinPlus'] === '1') {
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if (!class_exists('JSMinPlus', FALSE)) {
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require_once(ExtensionManagementUtility::extPath('scriptmerger') . 'Resources/jsminplus.php');
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}
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$minifiedContent = \JSMinPlus::minify($properties['content']);
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} else {
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if (!class_exists('JSMin', FALSE)) {
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require_once(ExtensionManagementUtility::extPath('scriptmerger') . 'Resources/jsmin.php');
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}
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/** @noinspection PhpUndefinedClassInspection */
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$minifiedContent = \JSMin::minify($properties['content']);
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}
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} catch (\Exception $exception) {
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$hasErrors = TRUE;
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}
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// check if the minified content has more than two characters or more than 50 lines and no errors occurred
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if (!$hasErrors && (strlen($minifiedContent) > 2 || count(explode(LF, $minifiedContent)) > 50)) {
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$properties['content'] = $minifiedContent . ';';
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} else {
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$message = 'This javascript file could not be minified: "' . $properties['file'] . '"! ' .
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'You should exclude it from the minification process!';
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GeneralUtility::sysLog($message, 'scriptmerger', GeneralUtility::SYSLOG_SEVERITY_ERROR);
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}
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$this->writeFile($newFile, $properties['content']);
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$properties['basename'] .= '.min';
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return $newFile;
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}
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/**
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* This method compresses a javascript file.
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*
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* @param array $properties properties of an entry (copy-by-reference is used!)
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* @return string new filename
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*/
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protected function compressFile(&$properties) {
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$newFile = $this->tempDirectories['compressed'] . $properties['basename'] . '.gz.js';
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if (file_exists($newFile)) {
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return $newFile;
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}
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$this->writeFile($newFile, gzencode($properties['content'], 5));
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return $newFile;
|
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}
|
||||
|
||||
/**
|
||||
* This method writes the javascript back to the document.
|
||||
*
|
||||
* @return void
|
||||
*/
|
||||
protected function writeToDocument() {
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$shouldBeAddedInDoc = $this->configuration['javascript.']['addContentInDocument'] === '1';
|
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foreach ($this->javascript as $section => $javascriptBySection) {
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ksort($javascriptBySection);
|
||||
if (!is_array($javascriptBySection)) {
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continue;
|
||||
}
|
||||
|
||||
// addBeforeBody was deprecated in version 4.0.0 and can be removed later on
|
||||
$pattern = '';
|
||||
if ($section === 'body' || $this->configuration['javascript.']['addBeforeBody'] === '1') {
|
||||
$pattern = '/' . preg_quote($this->configuration['javascript.']['mergedBodyFilePosition'], '/') . '/i';
|
||||
} elseif (trim($this->configuration['javascript.']['mergedHeadFilePosition']) !== '') {
|
||||
$pattern = '/' . preg_quote($this->configuration['javascript.']['mergedHeadFilePosition'], '/') . '/i';
|
||||
}
|
||||
|
||||
foreach ($javascriptBySection as $javascriptProperties) {
|
||||
if ($javascriptProperties['useOriginalCodeLine']) {
|
||||
$content = $javascriptProperties['original'];
|
||||
} elseif ($javascriptProperties['addInDocument'] || $shouldBeAddedInDoc) {
|
||||
$content = "\t" .
|
||||
'<script type="text/javascript">' . LF .
|
||||
"\t" . '/* <![CDATA[ */' . LF .
|
||||
"\t" . $javascriptProperties['content'] . LF .
|
||||
"\t" . '/* ]]> */' . LF .
|
||||
"\t" . '</script>' . LF;
|
||||
} else {
|
||||
$file = $javascriptProperties['file'];
|
||||
if (file_exists($file)) {
|
||||
$file = $GLOBALS['TSFE']->absRefPrefix .
|
||||
(PATH_site === '/' ? $file : str_replace(PATH_site, '', $file));
|
||||
}
|
||||
|
||||
if ($this->configuration['javascript.']['deferLoading'] === '1') {
|
||||
$content = '
|
||||
<script type="text/javascript" defer="defer">
|
||||
function downloadJSAtOnload() {
|
||||
var element = document.createElement("script");
|
||||
element.src = "' . $file . '";
|
||||
document.body.appendChild(element);
|
||||
}
|
||||
|
||||
if (window.addEventListener) {
|
||||
window.addEventListener("load", downloadJSAtOnload, false);
|
||||
} else if (window.attachEvent) {
|
||||
window.attachEvent("onload", downloadJSAtOnload);
|
||||
} else {
|
||||
window.onload = downloadJSAtOnload;
|
||||
}
|
||||
</script>';
|
||||
} else {
|
||||
$content = "\t" .
|
||||
'<script type="text/javascript" src="' . $file . '"></script>' . LF;
|
||||
}
|
||||
}
|
||||
|
||||
if ($pattern === '' || $javascriptProperties['merge-ignore']) {
|
||||
// add body scripts back to their original place if they were ignored
|
||||
$GLOBALS['TSFE']->content = str_replace(
|
||||
'###MERGER-' . $section . $javascriptProperties['position-key'] . 'MERGER###',
|
||||
$content,
|
||||
$GLOBALS['TSFE']->content
|
||||
);
|
||||
} else {
|
||||
$GLOBALS['TSFE']->content = preg_replace($pattern, $content . '\0', $GLOBALS['TSFE']->content, 1);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// remove any empty markers
|
||||
$pattern = '/###MERGER-(head|body)[0-9]*?MERGER###/is';
|
||||
$GLOBALS['TSFE']->content = preg_replace($pattern, '', $GLOBALS['TSFE']->content);
|
||||
}
|
||||
}
|
||||
|
||||
?>
|
||||
Reference in New Issue
Block a user