A temporary solution to minify Kirby's HTML output.
site.php should be placed in the root of your Kirby install.
In the "site" folder, create a new folder called library for the minify class. minify_html.php should be placed in /site/library/
Only a temporary solution untill I can find a cleaner way. More intfo here: getkirby/kirby#120
| <?php | |
| /** | |
| * Class Minify_HTML | |
| * @package Minify | |
| */ | |
| /** | |
| * 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. | |
| * | |
| * @package Minify | |
| * @author Stephen Clay <[email protected]> | |
| */ | |
| 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); | |
| // trim each line. | |
| // @todo take into account attribute values that span multiple lines. | |
| $this->_html = preg_replace('/^\\s+|\\s+$/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 _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)); | |
| } | |
| } |
| <?php | |
| $kirby = kirby(); | |
| require_once __DIR__ . DS . 'site' . DS . 'library' . DS . 'minify_html.php'; | |
| echo Minify_HTML::minify($kirby->launch()); | |
| die(); |