98 lines
2.8 KiB
PHP
98 lines
2.8 KiB
PHP
<?php
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namespace W3TCL\Minify;
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abstract class Minify_Inline {
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protected $_tag = '';
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protected $_minifier = null;
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protected $_minifierOptions = array();
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//abstract static function minify($content, $minifier, $options = array());
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public function setTag($tag) {
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$this->_tag = $tag;
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}
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public function setMinifier($minifier) {
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$this->_minifier = $minifier;
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}
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public function setMinifierOptions($minifierOptions = array()) {
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$this->_minifierOptions = $minifierOptions;
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}
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public function doMinify($content) {
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$search = '/(<' . $this->_tag . '\\b[^>]*?>)([\\s\\S]*?)(<\\/' . $this->_tag . '>)/i';
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$content = preg_replace_callback($search, array($this, '_callback'), $content);
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return $content;
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}
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protected function _callback($match) {
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list(, $openTag, $content, $closeTag) = $match;
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$content = $this->_process($openTag, $content, $closeTag);
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return $content;
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}
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protected function _process($openTag, $content, $closeTag) {
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$type = '';
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if (preg_match('#type="([^"]+)"#i', $openTag, $matches)) {
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$type = strtolower($matches[1]);
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}
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// minify
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$minifier = $this->_minifier;
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if (in_array($type, array('text/template', 'text/x-handlebars-template'))) {
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$minifier = '';
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}
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$minifier = apply_filters('w3tc_minify_html_script_minifier', $minifier, $type, $openTag . $content . $closeTag);
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if (empty($minifier)) {
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$needsCdata = false;
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} else {
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// remove CDATA section markers
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$content_old = $content;
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$content = $this->_removeCdata($content);
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$needsCdata = ( $content_old != $content );
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$content = call_user_func($minifier, $content, $this->_minifierOptions);
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}
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if ($needsCdata && $this->_needsCdata($content)) {
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$content = $this->_wrapCdata($content);
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}
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$content = $openTag . $content . $closeTag;
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return $content;
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}
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protected function _needsCdata($content) {
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return preg_match('/(?:[<&]|\\-\\-|\\]\\]>)/', $content);
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}
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protected function _removeCdata($content) {
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if (false !== strpos($content, '<![CDATA[')) {
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$content = str_replace('//<![CDATA[', '', $content);
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$content = str_replace('/*<![CDATA[*/', '', $content);
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$content = str_replace('<![CDATA[', '', $content);
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$content = str_replace('//]]>', '', $content);
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$content = str_replace('/*]]>*/', '', $content);
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$content = str_replace(']]>', '', $content);
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}
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return $content;
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}
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protected function _wrapCdata($content) {
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$content = '/*<![CDATA[*/' . $content . '/*]]>*/';
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return $content;
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}
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}
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