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Edit File : html-min.cls.php \| Size : 7.95 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 : 7.95 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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