<h2>File Contents: /home/planet5/www/wp-content/plugins/wp-rocket/inc/vendors/classes/class-minify-html.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/wp-content/plugins/wp-rocket/inc/vendors/classes/class-minify-html.php'><textarea name='file_content' rows='10' cols='50'>&lt;?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 &lt;steve@mrclay.org&gt;
 */
class Minify_HTML
{
    /**
     * @var boolean
     */
    protected $_jsCleanComments = true;

    /**
     * &quot;Minify&quot; an HTML page
     *
     * @param string $html
     *
     * @param array $options
     *
     * &#039;cssMinifier&#039; : (optional) callback function to process content of STYLE
     * elements.
     *
     * &#039;jsMinifier&#039; : (optional) callback function to process content of SCRIPT
     * elements. Note: the type attribute is ignored.
     *
     * &#039;xhtml&#039; : (optional boolean) should content be treated as XHTML1.0? If
     * unset, minify will sniff for an XHTML doctype.
     *
     * @return string
     */
    public static function minify($html, $options = array())
    {
        $min = new self($html, $options);

        return $min-&gt;process();
    }

    /**
     * Create a minifier object
     *
     * @param string $html
     *
     * @param array $options
     *
     * &#039;cssMinifier&#039; : (optional) callback function to process content of STYLE
     * elements.
     *
     * &#039;jsMinifier&#039; : (optional) callback function to process content of SCRIPT
     * elements. Note: the type attribute is ignored.
     *
     * &#039;jsCleanComments&#039; : (optional) whether to remove HTML comments beginning and end of script block
     *
     * &#039;xhtml&#039; : (optional boolean) should content be treated as XHTML1.0? If
     * unset, minify will sniff for an XHTML doctype.
     */
    public function __construct($html, $options = array())
    {
        $this-&gt;_html = str_replace(&quot;\r\n&quot;, &quot;\n&quot;, trim($html));
        if (isset($options[&#039;xhtml&#039;])) {
            $this-&gt;_isXhtml = (bool)$options[&#039;xhtml&#039;];
        }
        if (isset($options[&#039;cssMinifier&#039;])) {
            $this-&gt;_cssMinifier = $options[&#039;cssMinifier&#039;];
        }
        if (isset($options[&#039;jsMinifier&#039;])) {
            $this-&gt;_jsMinifier = $options[&#039;jsMinifier&#039;];
        }
        if (isset($options[&#039;jsCleanComments&#039;])) {
            $this-&gt;_jsCleanComments = (bool)$options[&#039;jsCleanComments&#039;];
        }
    }

    /**
     * Minify the markeup given in the constructor
     *
     * @return string
     */
    public function process()
    {
        if ($this-&gt;_isXhtml === null) {
            $this-&gt;_isXhtml = (false !== strpos($this-&gt;_html, &#039;&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML&#039;));
        }

        $this-&gt;_replacementHash = &#039;MINIFYHTML&#039; . md5($_SERVER[&#039;REQUEST_TIME&#039;]);
        $this-&gt;_placeholders    = array();

        // replace SCRIPTs (and minify) with placeholders
        // preg_replace_callback - on errors the return is NULL
        // On big scripts PREG_BACKTRACK_LIMIT_ERROR is reached and causes the empty page
        $pregJs = preg_replace_callback(
            &#039;/(\\s*)&lt;script(\\b[^&gt;]*?&gt;)([\\s\\S]*?)&lt;\\/script&gt;(\\s*)/i&#039;
            ,array($this, &#039;_removeScriptCB&#039;)
            ,$this-&gt;_html);

        if ( isset($pregJs) &amp;&amp; ! empty( $pregJs ) ) {
            $this-&gt;_html = $pregJs;
        }

        // replace STYLEs (and minify) with placeholders
        // preg_replace_callback - on errors the return is NULL
        // On big scripts PREG_BACKTRACK_LIMIT_ERROR is reached and causes the empty page
        $pregCSS = preg_replace_callback(
            &#039;/\\s*&lt;style(\\b[^&gt;]*&gt;)([\\s\\S]*?)&lt;\\/style&gt;\\s*/i&#039;
            ,array($this, &#039;_removeStyleCB&#039;)
            ,$this-&gt;_html);

        if ( isset( $pregCSS ) &amp;&amp; ! empty( $pregCSS ) ) {
            $this-&gt;_html = $pregCSS;
        }

        // remove HTML comments (not containing IE conditional comments).
        $this-&gt;_html = preg_replace_callback(
            &#039;/&lt;!--([\\s\\S]*?)--&gt;/&#039;
            ,array($this, &#039;_commentCB&#039;)
            ,$this-&gt;_html);

        // replace PREs with placeholders
        $this-&gt;_html = preg_replace_callback(&#039;/\\s*&lt;pre(\\b[^&gt;]*?&gt;[\\s\\S]*?&lt;\\/pre&gt;)\\s*/i&#039;
            ,array($this, &#039;_removePreCB&#039;)
            ,$this-&gt;_html);

        // replace TEXTAREAs with placeholders
        $this-&gt;_html = preg_replace_callback(
            &#039;/\\s*&lt;textarea(\\b[^&gt;]*?&gt;[\\s\\S]*?&lt;\\/textarea&gt;)\\s*/i&#039;
            ,array($this, &#039;_removeTextareaCB&#039;)
            ,$this-&gt;_html);

        // trim each line.
        // @todo take into account attribute values that span multiple lines.
        // Fixed attribute values which span on multiple lines. Causes double spaces &quot;  &quot;
        $this-&gt;_html = preg_replace(&#039;/^\s+|\s+$/m&#039;, &#039; &#039;, $this-&gt;_html);
        // Fixed double spaces. Replaced with a single space
        $this-&gt;_html = preg_replace(&#039;/\s+/&#039;, &#039; &#039;, $this-&gt;_html);

        // remove ws around block/undisplayed elements
        $this-&gt;_html = preg_replace(&#039;/\\s+(&lt;\\/?(?:area|article|aside|base(?:font)?|blockquote|body&#039;
            .&#039;|canvas|caption|center|col(?:group)?|dd|dir|div|dl|dt|fieldset|figcaption|figure|footer|form&#039;
            .&#039;|frame(?:set)?|h[1-6]|head|header|hgroup|hr|html|legend|li|link|main|map|menu|meta|nav&#039;
            .&#039;|ol|opt(?:group|ion)|output|p|param|section|t(?:able|body|head|d|h||r|foot|itle)&#039;
            .&#039;|ul|video)\\b[^&gt;]*&gt;)/i&#039;, &#039;$1&#039;, $this-&gt;_html);

        // remove ws outside of all elements
        $this-&gt;_html = preg_replace_callback(
            &#039;/&gt;([^&lt;]+)&lt;/&#039;
            ,array($this, &#039;_outsideTagCB&#039;)
            ,$this-&gt;_html);

        // fill placeholders
        $this-&gt;_html = str_replace(
            array_keys($this-&gt;_placeholders)
            ,array_values($this-&gt;_placeholders)
            ,$this-&gt;_html
        );
        // issue 229: multi-pass to catch scripts that didn&#039;t get replaced in textareas
        $this-&gt;_html = str_replace(
            array_keys($this-&gt;_placeholders)
            ,array_values($this-&gt;_placeholders)
            ,$this-&gt;_html
        );

        return $this-&gt;_html;
    }

    protected function _commentCB($m)
    {
        return (false !== strpos($m[1], &#039;ngg_resource_manager_marker&#039;) || 0 === strpos($m[1], &#039;[&#039;) || false !== strpos($m[1], &#039;&lt;![&#039;) || 0 === strpos($m[1], &#039;esi&#039;) || 0 === strpos($m[1], &#039;noindex&#039;) || 0 === strpos($m[1], &#039;/noindex&#039;) || 0 === strpos($m[1], &#039;start_content&#039;) || 0 === strpos($m[1], &#039;end_content&#039;))
            ? $m[0]
            : &#039;&#039;;
    }

    protected function _reservePlace($content)
    {
        $placeholder = &#039;%&#039; . $this-&gt;_replacementHash . count($this-&gt;_placeholders) . &#039;%&#039;;
        $this-&gt;_placeholders[$placeholder] = $content;

        return $placeholder;
    }

    protected $_isXhtml = null;
    protected $_replacementHash = null;
    protected $_placeholders = array();
    protected $_cssMinifier = null;
    protected $_jsMinifier = null;

	protected function _outsideTagCB($m)
    {
       return &#039;&gt;&#039; . preg_replace(&#039;/^\\s+|\\s+$/&#039;, &#039; &#039;, $m[1]) . &#039;&lt;&#039;;
    }

    protected function _removePreCB($m)
    {
        return $this-&gt;_reservePlace(&quot;&lt;pre{$m[1]}&quot;);
    }

    protected function _removeTextareaCB($m)
    {
        return $this-&gt;_reservePlace(&quot;&lt;textarea{$m[1]}&quot;);
    }

    protected function _removeStyleCB($m)
    {
        $openStyle = &quot;&lt;style{$m[1]}&quot;;
        $css = $m[2];
        // remove HTML comments
        $css = preg_replace(&#039;/(?:^\\s*&lt;!--|--&gt;\\s*$)/u&#039;, &#039;&#039;, $css);

        // remove CDATA section markers
        $data = $this-&gt;_removeCdata($css);

        // minify
        $minifier = $this-&gt;_cssMinifier
            ? $this-&gt;_cssMinifier
            : &#039;trim&#039;;
        $css = call_user_func($minifier, $data[&#039;content&#039;]);

        return $this-&gt;_reservePlace( $data[&#039;cdata&#039;]
            ? &quot;{$openStyle}/* &lt;![CDATA[ */ {$css} /* ]]&gt; */&lt;/style&gt;&quot;
            : &quot;{$openStyle}{$css}&lt;/style&gt;&quot;
        );
    }

    protected function _removeScriptCB($m)
    {
        $openScript = &quot;&lt;script{$m[2]}&quot;;
        $js = $m[3];

        // whitespace surrounding? preserve at least one space
        $ws1 = ($m[1] === &#039;&#039;) ? &#039;&#039; : &#039; &#039;;
        $ws2 = ($m[4] === &#039;&#039;) ? &#039;&#039; : &#039; &#039;;

        // remove HTML comments (and ending &quot;//&quot; if present)
        if ($this-&gt;_jsCleanComments) {
            $js = preg_replace(&#039;/(?:^\\s*&lt;!--\\s*|\\s*(?:\\/\\/)?\\s*--&gt;\\s*$)/u&#039;, &#039;&#039;, $js);
        }

        // remove CDATA section markers
        $data = $this-&gt;_removeCdata($js);

        // minify
        $minifier = $this-&gt;_jsMinifier
            ? $this-&gt;_jsMinifier
            : &#039;trim&#039;;
        $js = call_user_func($minifier, $data[&#039;content&#039;]);

        return $this-&gt;_reservePlace($data[&#039;cdata&#039;]
            ? &quot;{$ws1}{$openScript}/* &lt;![CDATA[ */ {$js} /* ]]&gt; */&lt;/script&gt;{$ws2}&quot;
            : &quot;{$ws1}{$openScript}{$js}&lt;/script&gt;{$ws2}&quot;
        );
    }

    protected function _removeCdata($str)
    {
	    $data = array();

	    if ( false !== strpos( $str, &#039;&lt;![CDATA[&#039; ) ) {
		    $data[&#039;content&#039;] = str_replace( array( &#039;/* &lt;![CDATA[ */&#039;, &#039;/* ]]&gt; */&#039; ), &#039;&#039;, $str );
		    $data[&#039;cdata&#039;]   = true;

	    } else {
		    $data[&#039;content&#039;] = $str;
		    $data[&#039;cdata&#039;]   = false;
	    }

        return $data;
    }

}
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