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Edit File : html-min.cls.php \| Size : 7.71 KB
<?php /** * 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 <steve@mrclay.org> / namespace LiteSpeed\Lib ; defined( 'WPINC' ) \|\| exit ; class HTML_MIN { /* * @var string / protected $_html = ''; /* * @var boolean / protected $_jsCleanComments = true; protected $_skipComments = array(); /* * "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']; } if (isset($options['skipComments'])) { $this->_skipComments = $options['skipComments']; } } /* * Minify the markeup given in the constructor * * @return string / public function process() { if ($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\|article\|aside\|base(?:font)?\|blockquote\|body' .'\|canvas\|caption\|center\|col(?:group)?\|dd\|dir\|div\|dl\|dt\|fieldset\|figcaption\|figure\|footer\|form' .'\|frame(?:set)?\|h[1-6]\|head\|header\|hgroup\|hr\|html\|legend\|li\|link\|main\|map\|menu\|meta\|nav' .'\|ol\|opt(?:group\|ion)\|output\|p\|param\|section\|t(?:able\|body\|head\|d\|h\|\|r\|foot\|itle)' .'\|ul\|video)\\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 $this->_html; } /* * From LSCWP 6.2: Changed the function to test for special comments that will be skipped. See: https://github.com/litespeedtech/lscache_wp/pull/622 / protected function _commentCB($m) { // If is IE conditional comment return it. if(0 === strpos($m[1], '[') \|\| false !== strpos($m[1], '<![')) return $m[0]; // Check if comment text is present in Page Optimization -> HTML Settings -> HTML Keep comments if(count($this->_skipComments) > 0){ foreach ($this->_skipComments as $comment) { if ($comment && strpos($m[1], $comment) !== false) { return $m[0]; } } } // Comment can be removed. return ''; } protected function _reservePlace($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 /** * Added 2nd param by LiteSpeed * * @since 2.2.3 / if ( $this->_jsMinifier ) { $js = call_user_func( $this->_jsMinifier, $js, trim( $m[ 2 ] ) ) ; } else { $js = trim( $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)); } } Back

Edit File : html-min.cls.php | Size : 7.71 KB

<?php
/**
 * 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 <steve@mrclay.org>
 */
namespace LiteSpeed\Lib ;

defined( 'WPINC' ) || exit ;

class HTML_MIN
{
	/**
	 * @var string
	 */
	protected $_html = '';

/**
	 * @var boolean
	 */
	protected $_jsCleanComments = true;
	protected $_skipComments = array();

/**
	 * "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'];
		}
		if (isset($options['skipComments'])) {
			$this->_skipComments = $options['skipComments'];
		}
	}

/**
	 * 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).
		$this->_html = preg_replace_callback(
			'//'
			,array($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|article|aside|base(?:font)?|blockquote|body'
			.'|canvas|caption|center|col(?:group)?|dd|dir|div|dl|dt|fieldset|figcaption|figure|footer|form'
			.'|frame(?:set)?|h[1-6]|head|header|hgroup|hr|html|legend|li|link|main|map|menu|meta|nav'
			.'|ol|opt(?:group|ion)|output|p|param|section|t(?:able|body|head|d|h||r|foot|itle)'
			.'|ul|video)\\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;
	}

/**
	 * From LSCWP 6.2: Changed the function to test for special comments that will be skipped. See: https://github.com/litespeedtech/lscache_wp/pull/622
	 */
	protected function _commentCB($m)
	{
		// If is IE conditional comment return it.
		if(0 === strpos($m[1], '[') || false !== strpos($m[1], '<![')) return $m[0];

// Check if comment text is present in Page Optimization -> HTML Settings -> HTML Keep comments
		if(count($this->_skipComments) > 0){
			foreach ($this->_skipComments as $comment) {
				if ($comment && strpos($m[1], $comment) !== false) {
					return $m[0];
				}
			}
		}

// Comment can be removed.
		return '';
	}

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) {
			$js = preg_replace('/(?:^\\s*\\s*$)/', '', $js);
		}

// remove CDATA section markers
		$js = $this->_removeCdata($js);

// minify
		/**
		 * Added 2nd param by LiteSpeed
		 *
		 * @since  2.2.3
		 */
		if ( $this->_jsMinifier ) {
			$js = call_user_func( $this->_jsMinifier, $js, trim( $m[ 2 ] ) ) ;
		}
		else {
			$js = trim( $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));
	}
}

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