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Editing: class.minify_html.php

<?php /** * Class Minify_HTML * @package Minify */ /** * Surcharge du minifieur HTML * * Surcharge pour ne pas manger les commentaires <!--extra--> * qui servent parfois aux plugins, et parfois même après * le passage du compacteur HTML * * C'était le cas du bouton statistiques du formulaire admin par exemple * * On permet de conserver également tout commentaire commençant par <!--keepme: --> * * @package SPIP\Compresseur\Minifieur **/ class Minify_HTML_SPIP extends Minify_HTML { /** * {@inheritdoc} * * * @param string $html * HTML à minifier * @param array $options * Tableau d'option avec les index possibles * - 'cssMinifier' : (optional) callback function to process content of STYLE * elements. * - 'jsMinifier' : (optional) callback function to process content of SCRIPT * elements. Note: the type attribute is ignored. * - 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If * unset, minify will sniff for an XHTML doctype. * @return string * HTML minifié **/ public static function minify($html, $options = array()) { $min = new Minify_HTML_SPIP($html, $options); return $min->process(); } /** * Minification des commentaires * * Le cas <!--extra--> doit être conservé dans les commentaires, * tout comme <!--keepme: xxx --> * * @param array $m Matches du preg_match d'un commentaire HTML * @return string Contenu minifié */ protected function _commentCB($m) { if ($m[1] === 'extra') return $m[0]; if ($m[1] AND $m[1][0] === 'k' AND substr($m[1],0,7) === 'keepme:') return $m[0]; return parent::_commentCB($m); } } /** * Compress HTML * * This is a heavy regex-based removal of whitespace, unnecessary comments and * tokens. IE conditional comments are preserved. There are also options to have * STYLE and SCRIPT blocks compressed by callback functions. * * A test suite is available. * * @link https://github.com/mrclay/minify/blob/master/min/lib/Minify/HTML.php * @version 9e4176f1 * @note Librairie modifiée pour prendre en compte les attributs avec multilignes. * * @package Minify * @author Stephen Clay <steve@mrclay.org> */ class Minify_HTML { /** * @var boolean */ protected $_jsCleanComments = true; /** * "Minify" an HTML page * * @param string $html * * @param array $options * * 'cssMinifier' : (optional) callback function to process content of STYLE * elements. * * 'jsMinifier' : (optional) callback function to process content of SCRIPT * elements. Note: the type attribute is ignored. * * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If * unset, minify will sniff for an XHTML doctype. * * @return string */ public static function minify($html, $options = array()) { $min = new self($html, $options); return $min->process(); } /** * Create a minifier object * * @param string $html * * @param array $options * * 'cssMinifier' : (optional) callback function to process content of STYLE * elements. * * 'jsMinifier' : (optional) callback function to process content of SCRIPT * elements. Note: the type attribute is ignored. * * 'jsCleanComments' : (optional) whether to remove HTML comments beginning and end of script block * * 'xhtml' : (optional boolean) should content be treated as XHTML1.0? If * unset, minify will sniff for an XHTML doctype. */ public function __construct($html, $options = array()) { $this->_html = str_replace("\r\n", "\n", trim($html)); if (isset($options['xhtml'])) { $this->_isXhtml = (bool)$options['xhtml']; } if (isset($options['cssMinifier'])) { $this->_cssMinifier = $options['cssMinifier']; } if (isset($options['jsMinifier'])) { $this->_jsMinifier = $options['jsMinifier']; } if (isset($options['jsCleanComments'])) { $this->_jsCleanComments = (bool)$options['jsCleanComments']; } } /** * Minify the markeup given in the constructor * * @return string */ public function process() { if ($this->_isXhtml === null) { $this->_isXhtml = (false !== strpos($this->_html, '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML')); } $this->_replacementHash = 'MINIFYHTML' . md5($_SERVER['REQUEST_TIME']); $this->_placeholders = array(); // replace SCRIPTs (and minify) with placeholders $this->_html = preg_replace_callback( '/(\\s*)<script(\\b[^>]*?>)([\\s\\S]*?)<\\/script>(\\s*)/i' ,array($this, '_removeScriptCB') ,$this->_html); // replace STYLEs (and minify) with placeholders $this->_html = preg_replace_callback( '/\\s*<style(\\b[^>]*>)([\\s\\S]*?)<\\/style>\\s*/i' ,array($this, '_removeStyleCB') ,$this->_html); // remove HTML comments (not containing IE conditional comments). $this->_html = preg_replace_callback( '/<!--([\\s\\S]*?)-->/' ,array($this, '_commentCB') ,$this->_html); // replace PREs with placeholders $this->_html = preg_replace_callback('/\\s*<pre(\\b[^>]*?>[\\s\\S]*?<\\/pre>)\\s*/i' ,array($this, '_removePreCB') ,$this->_html); // replace TEXTAREAs with placeholders $this->_html = preg_replace_callback( '/\\s*<textarea(\\b[^>]*?>[\\s\\S]*?<\\/textarea>)\\s*/i' ,array($this, '_removeTextareaCB') ,$this->_html); // replace INPUTs with placeholders $this->_html = preg_replace_callback( '/\\s*<input(\\b[^>]*?>)\\s*/i' ,array($this, '_removeInputCB') ,$this->_html); // trim each line. // @todo take into account attribute values that span multiple lines. // 2 regexp because merging un /^\\s+|\\s+$/m also del a lot of newline chars ??? $this->_html = preg_replace('/\\s+$/m', '', $this->_html); $this->_html = preg_replace('/^\\s+/m', '', $this->_html); // remove ws around block/undisplayed elements $this->_html = preg_replace('/\\s+(<\\/?(?:area|base(?:font)?|blockquote|body' .'|caption|center|col(?:group)?|dd|dir|div|dl|dt|fieldset|form' .'|frame(?:set)?|h[1-6]|head|hr|html|legend|li|link|map|menu|meta' .'|ol|opt(?:group|ion)|p|param|t(?:able|body|head|d|h||r|foot|itle)' .'|ul)\\b[^>]*>)/i', '$1', $this->_html); // remove ws outside of all elements $this->_html = preg_replace( '/>(\\s(?:\\s*))?([^<]+)(\\s(?:\s*))?</' ,'>$1$2$3<' ,$this->_html); // use newlines before 1st attribute in open tags (to limit line lengths) $this->_html = preg_replace('/(<[a-z\\-]+)\\s+([^>]+>)/i', "$1\n$2", $this->_html); // fill placeholders $this->_html = str_replace( array_keys($this->_placeholders) ,array_values($this->_placeholders) ,$this->_html ); // issue 229: multi-pass to catch scripts that didn't get replaced in textareas $this->_html = str_replace( array_keys($this->_placeholders) ,array_values($this->_placeholders) ,$this->_html ); return $this->_html; } protected function _commentCB($m) { return (0 === strpos($m[1], '[') || false !== strpos($m[1], '<![')) ? $m[0] : ''; } protected function _reservePlace($content) { $placeholder = '%' . $this->_replacementHash . count($this->_placeholders) . '%'; $this->_placeholders[$placeholder] = $content; return $placeholder; } protected $_isXhtml = null; protected $_replacementHash = null; protected $_placeholders = array(); protected $_cssMinifier = null; protected $_jsMinifier = null; protected function _removePreCB($m) { return $this->_reservePlace("<pre{$m[1]}"); } protected function _removeInputCB($m) { return $this->_reservePlace("<input{$m[1]}"); } protected function _removeTextareaCB($m) { return $this->_reservePlace("<textarea{$m[1]}"); } protected function _removeStyleCB($m) { $openStyle = "<style{$m[1]}"; $css = $m[2]; // remove HTML comments $css = preg_replace('/(?:^\\s*<!--|-->\\s*$)/', '', $css); // remove CDATA section markers $css = $this->_removeCdata($css); // minify $minifier = $this->_cssMinifier ? $this->_cssMinifier : 'trim'; $css = call_user_func($minifier, $css); return $this->_reservePlace($this->_needsCdata($css) ? "{$openStyle}/*<![CDATA[*/{$css}/*]]>*/</style>" : "{$openStyle}{$css}</style>" ); } protected function _removeScriptCB($m) { $openScript = "<script{$m[2]}"; $js = $m[3]; // whitespace surrounding? preserve at least one space $ws1 = ($m[1] === '') ? '' : ' '; $ws2 = ($m[4] === '') ? '' : ' '; // remove HTML comments (and ending "//" if present) if ($this->_jsCleanComments) { $js = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/', '', $js); } // remove CDATA section markers $js = $this->_removeCdata($js); // minify $minifier = $this->_jsMinifier ? $this->_jsMinifier : 'trim'; $js = call_user_func($minifier, $js); return $this->_reservePlace($this->_needsCdata($js) ? "{$ws1}{$openScript}/*<![CDATA[*/{$js}/*]]>*/</script>{$ws2}" : "{$ws1}{$openScript}{$js}</script>{$ws2}" ); } protected function _removeCdata($str) { return (false !== strpos($str, '<![CDATA[')) ? str_replace(array('<![CDATA[', ']]>'), '', $str) : $str; } protected function _needsCdata($str) { return ($this->_isXhtml && preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $str)); } }