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/**
 * CSSTidy - CSS Parser and Optimiser
 *
 * CSS Printing class
 * This class prints CSS data generated by csstidy.
 *
 * Copyright 2005, 2006, 2007 Florian Schmitz
 *
 * This file is part of CSSTidy.
 *
 *   CSSTidy is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published by
 *   the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   CSSTidy is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.
 *
 * @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
 * @package csstidy
 * @author Florian Schmitz (floele at gmail dot com) 2005-2007
 * @author Brett Zamir (brettz9 at yahoo dot com) 2007
 * @author Cedric Morin (cedric at yterium dot com) 2010-2012
 */

/**
 * CSS Printing class
 *
 * This class prints CSS data generated by csstidy.
 *
 * @package csstidy
 * @author Florian Schmitz (floele at gmail dot com) 2005-2006
 * @version 1.1.0
 */
class csstidy_print {

	/**
	 * csstidy object
	 * @var object
	 */
	public $parser;

	/**
	 * Saves the input CSS string
	 * @var string
	 * @access private
	 */
	public $input_css = '';
	/**
	 * Saves the formatted CSS string
	 * @var string
	 * @access public
	 */
	public $output_css = '';
	/**
	 * Saves the formatted CSS string (plain text)
	 * @var string
	 * @access public
	 */
	public $output_css_plain = '';

	/**
	 * Constructor
	 * @param array $css contains the class csstidy
	 * @access private
	 * @version 1.0
	 */
	public function __construct($css) {
		$this-&gt;parser = $css;
		$this-&gt;css = &amp; $css-&gt;css;
		$this-&gt;template = &amp; $css-&gt;template;
		$this-&gt;tokens = &amp; $css-&gt;tokens;
		$this-&gt;charset = &amp; $css-&gt;charset;
		$this-&gt;import = &amp; $css-&gt;import;
		$this-&gt;namespace = &amp; $css-&gt;namespace;
	}

	/**
	 * Resets output_css and output_css_plain (new css code)
	 * @access private
	 * @version 1.0
	 */
	public function _reset() {
		$this-&gt;output_css = '';
		$this-&gt;output_css_plain = '';
	}

	/**
	 * Returns the CSS code as plain text
	 * @param string $default_media default @media to add to selectors without any @media
	 * @return string
	 * @access public
	 * @version 1.0
	 */
	public function plain($default_media='') {
		$this-&gt;_print(true, $default_media);
		return $this-&gt;output_css_plain;
	}

	/**
	 * Returns the formatted CSS code
	 * @param string $default_media default @media to add to selectors without any @media
	 * @return string
	 * @access public
	 * @version 1.0
	 */
	public function formatted($default_media='') {
		$this-&gt;_print(false, $default_media);
		return $this-&gt;output_css;
	}

	/**
	 * Returns the formatted CSS code to make a complete webpage
	 * @param string $doctype shorthand for the document type
	 * @param bool $externalcss indicates whether styles to be attached internally or as an external stylesheet
	 * @param string $title title to be added in the head of the document
	 * @param string $lang two-letter language code to be added to the output
	 * @return string
	 * @access public
	 * @version 1.4
	 */
	public function formatted_page($doctype='html5', $externalcss=true, $title='', $lang='en') {
		switch ($doctype) {
			case 'html5':
				$doctype_output = '&lt;!DOCTYPE html&gt;';
				break;
				case 'xhtml1.0strict':
				$doctype_output = '&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.0 Strict//EN&quot;
			&quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd&quot;&gt;';
				break;
			case 'xhtml1.1':
			default:
				$doctype_output = '&lt;!DOCTYPE html PUBLIC &quot;-//W3C//DTD XHTML 1.1//EN&quot;
				&quot;http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd&quot;&gt;';
				break;
		}

		$output = $cssparsed = '';
		$this-&gt;output_css_plain = &amp; $output;

		$output .= $doctype_output . &quot;\n&quot; . '&lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot; xml:lang=&quot;' . $lang . '&quot;';
		$output .= ( $doctype === 'xhtml1.1') ? '&gt;' : ' lang=&quot;' . $lang . '&quot;&gt;';
		$output .= &quot;\n&lt;head&gt;\n    &lt;title&gt;$title&lt;/title&gt;&quot;;

		if ($externalcss) {
			$output .= &quot;\n    &lt;style type=\&quot;text/css\&quot;&gt;\n&quot;;
			$cssparsed = file_get_contents('cssparsed.css');
			$output .= $cssparsed; // Adds an invisible BOM or something, but not in css_optimised.php
			$output .= &quot;\n&lt;/style&gt;&quot;;
		} else {
			$output .= &quot;\n&quot; . '    &lt;link rel=&quot;stylesheet&quot; type=&quot;text/css&quot; href=&quot;cssparsed.css&quot; /&gt;';
		}
		$output .= &quot;\n&lt;/head&gt;\n&lt;body&gt;&lt;code id=\&quot;copytext\&quot;&gt;&quot;;
		$output .= $this-&gt;formatted();
		$output .= '&lt;/code&gt;' . &quot;\n&quot; . '&lt;/body&gt;&lt;/html&gt;';
		return $this-&gt;output_css_plain;
	}

	/**
	 * Returns the formatted CSS Code and saves it into $this-&gt;output_css and $this-&gt;output_css_plain
	 * @param bool $plain plain text or not
	 * @param string $default_media default @media to add to selectors without any @media
	 * @access private
	 * @version 2.0
	 */
	public function _print($plain = false, $default_media='') {
		if ($this-&gt;output_css &amp;&amp; $this-&gt;output_css_plain) {
			return;
		}

		$output = '';
		if (!$this-&gt;parser-&gt;get_cfg('preserve_css')) {
			$this-&gt;_convert_raw_css($default_media);
		}

		$template = &amp; $this-&gt;template;

		if ($plain) {
			$template = array_map('strip_tags', $template);
		}

		if ($this-&gt;parser-&gt;get_cfg('timestamp')) {
			array_unshift($this-&gt;tokens, array(COMMENT, ' CSSTidy ' . $this-&gt;parser-&gt;version . ': ' . date('r') . ' '));
		}

		if (!empty($this-&gt;charset)) {
			$output .= $template[0] . '@charset ' . $template[5] . $this-&gt;charset . $template[6] . $template[13];
		}

		if (!empty($this-&gt;import)) {
			for ($i = 0, $size = count($this-&gt;import); $i &lt; $size; $i++) {
				if (substr($this-&gt;import[$i], 0, 4) === 'url(' &amp;&amp; substr($this-&gt;import[$i], -1, 1) === ')') {
					$this-&gt;import[$i] = '&quot;' . substr($this-&gt;import[$i], 4, -1) . '&quot;';
					$this-&gt;parser-&gt;log('Optimised @import : Removed &quot;url(&quot;', 'Information');
				}
				else if (!preg_match('/^&quot;.+&quot;$/',$this-&gt;import[$i])) {
					// fixes a bug for @import &quot;..&quot; instead of the expected @import url(&quot;..&quot;)
					// If it comes in due to @import &quot;..&quot; the &quot;&quot; will be missing and the output will become @import .. (which is an error)
					$this-&gt;import[$i] = '&quot;' . $this-&gt;import[$i] . '&quot;';
				}

				$output .= $template[0] . '@import ' . $template[5] . $this-&gt;import[$i] . $template[6] . $template[13];
			}
		}

		if (!empty($this-&gt;namespace)) {
			if (($p=strpos($this-&gt;namespace,&quot;url(&quot;))!==false &amp;&amp; substr($this-&gt;namespace, -1, 1) === ')') {
				$this-&gt;namespace = substr_replace($this-&gt;namespace,'&quot;',$p,4);
				$this-&gt;namespace = substr($this-&gt;namespace, 0, -1) . '&quot;';
				$this-&gt;parser-&gt;log('Optimised @namespace : Removed &quot;url(&quot;', 'Information');
			}
			$output .= $template[0] . '@namespace ' . $template[5] . $this-&gt;namespace . $template[6] . $template[13];
		}

		$in_at_out = [];
		$out = &amp; $output;
		$indent_level = 0;

		foreach ($this-&gt;tokens as $key =&gt; $token) {
			switch ($token[0]) {
				case AT_START:
					$out .= $template[0] . $this-&gt;_htmlsp($token[1], $plain) . $template[1];
					$indent_level++;
					if (!isset($in_at_out[$indent_level])) {
						$in_at_out[$indent_level] = '';
					}
					$out = &amp; $in_at_out[$indent_level];
					break;

				case SEL_START:
					if ($this-&gt;parser-&gt;get_cfg('lowercase_s'))
						$token[1] = strtolower($token[1]);
					$out .= ( $token[1][0] !== '@') ? $template[2] . $this-&gt;_htmlsp($token[1], $plain) : $template[0] . $this-&gt;_htmlsp($token[1], $plain);
					$out .= $template[3];
					break;

				case PROPERTY:
					if ($this-&gt;parser-&gt;get_cfg('case_properties') === 2) {
						$token[1] = strtoupper($token[1]);
					} elseif ($this-&gt;parser-&gt;get_cfg('case_properties') === 1) {
						$token[1] = strtolower($token[1]);
					}
					$out .= $template[4] . $this-&gt;_htmlsp($token[1], $plain) . ':' . $template[5];
					break;

				case VALUE:
					$out .= $this-&gt;_htmlsp($token[1], $plain);
					if ($this-&gt;_seeknocomment($key, 1) == SEL_END &amp;&amp; $this-&gt;parser-&gt;get_cfg('remove_last_;')) {
						$out .= str_replace(';', '', $template[6]);
					} else {
						$out .= $template[6];
					}
					break;

				case SEL_END:
					$out .= $template[7];
					if ($this-&gt;_seeknocomment($key, 1) != AT_END)
						$out .= $template[8];
					break;

				case AT_END:
					if (strlen($template[10])) {
						// indent the bloc we are closing
						$out = str_replace(&quot;\n\n&quot;, &quot;\r\n&quot;, $out); // don't fill empty lines
						$out = str_replace(&quot;\n&quot;, &quot;\n&quot; . $template[10], $out);
						$out = str_replace(&quot;\r\n&quot;, &quot;\n\n&quot;, $out);
					}
					if ($indent_level &gt; 1) {
						$out = &amp; $in_at_out[$indent_level-1];
					}
					else {
						$out = &amp; $output;
					}
					$out .= $template[10] . $in_at_out[$indent_level];
					if ($this-&gt;_seeknocomment($key, 1) != AT_END) {
						$out .= $template[9];
					}
					else {
						$out .= rtrim($template[9]);
					}

					unset($in_at_out[$indent_level]);
					$indent_level--;
					break;

				case IMPORTANT_COMMENT:
				case COMMENT:
					$out .= $template[11] . '/*' . $this-&gt;_htmlsp($token[1], $plain) . '*/' . $template[12];
					break;
			}
		}

		$output = trim($output);

		if (!$plain) {
			$this-&gt;output_css = $output;
			$this-&gt;_print(true);
		} else {
			// If using spaces in the template, don't want these to appear in the plain output
			$this-&gt;output_css_plain = str_replace('&amp;#160;', '', $output);
		}
	}

	/**
	 * Gets the next token type which is $move away from $key, excluding comments
	 * @param integer $key current position
	 * @param integer $move move this far
	 * @return mixed a token type
	 * @access private
	 * @version 1.0
	 */
	public function _seeknocomment($key, $move) {
		$go = ($move &gt; 0) ? 1 : -1;
		for ($i = $key + 1; abs($key - $i) - 1 &lt; abs($move); $i += $go) {
			if (!isset($this-&gt;tokens[$i])) {
				return;
			}
			if ($this-&gt;tokens[$i][0] == COMMENT) {
				$move += 1;
				continue;
			}
			return $this-&gt;tokens[$i][0];
		}
	}

	/**
	 * Converts $this-&gt;css array to a raw array ($this-&gt;tokens)
	 * @param string $default_media default @media to add to selectors without any @media
	 * @access private
	 * @version 1.0
	 */
	public function _convert_raw_css($default_media='') {
		$this-&gt;tokens = array();
		$sort_selectors = $this-&gt;parser-&gt;get_cfg('sort_selectors');
		$sort_properties = $this-&gt;parser-&gt;get_cfg('sort_properties');

		// important comment section ?
		if (isset($this-&gt;css['!'])) {
			$this-&gt;parser-&gt;_add_token(IMPORTANT_COMMENT, rtrim($this-&gt;css['!']), true);
			unset($this-&gt;css['!']);
		}

		foreach ($this-&gt;css as $medium =&gt; $val) {
			if ($sort_selectors)
				ksort($val);
			if (intval($medium) &lt; DEFAULT_AT) {
				// un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
				if (strlen(trim($medium))) {
					$parts_to_open = explode('{', $medium);
					foreach ($parts_to_open as $part) {
						$this-&gt;parser-&gt;_add_token(AT_START, $part, true);
					}
				}
			} elseif ($default_media) {
				$this-&gt;parser-&gt;_add_token(AT_START, $default_media, true);
			}

			foreach ($val as $selector =&gt; $vali) {
				if ($sort_properties)
					ksort($vali);
				$this-&gt;parser-&gt;_add_token(SEL_START, $selector, true);

				$invalid = array(
					'*' =&gt; array(), // IE7 hacks first
					'_' =&gt; array(), // IE6 hacks
					'/' =&gt; array(), // IE6 hacks
					'-' =&gt; array()  // IE6 hacks
				);
				foreach ($vali as $property =&gt; $valj) {
					if (strncmp($property,&quot;//&quot;,2)!==0) {
						$matches = array();
						if ($sort_properties &amp;&amp; preg_match('/^(\*|_|\/|-)(?!(ms|moz|o\b|xv|atsc|wap|khtml|webkit|ah|hp|ro|rim|tc)-)/', $property, $matches)) {
							$invalid[$matches[1]][$property] = $valj;
						} else {
							$this-&gt;parser-&gt;_add_token(PROPERTY, $property, true);
							$this-&gt;parser-&gt;_add_token(VALUE, $valj, true);
						}
					}
				}
				foreach ($invalid as $prefix =&gt; $props) {
					foreach ($props as $property =&gt; $valj) {
						$this-&gt;parser-&gt;_add_token(PROPERTY, $property, true);
						$this-&gt;parser-&gt;_add_token(VALUE, $valj, true);
					}
				}
				$this-&gt;parser-&gt;_add_token(SEL_END, $selector, true);
			}

			if (intval($medium) &lt; DEFAULT_AT) {
				// un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
				if (strlen(trim($medium))) {
					$parts_to_close = explode('{', $medium);
					foreach (array_reverse($parts_to_close) as $part) {
						$this-&gt;parser-&gt;_add_token(AT_END, $part, true);
					}
				}
			} elseif ($default_media) {
				$this-&gt;parser-&gt;_add_token(AT_END, $default_media, true);
			}
		}
	}

	/**
	 * Same as htmlspecialchars, only that chars are not replaced if $plain !== true. This makes  print_code() cleaner.
	 * @param string $string
	 * @param bool $plain
	 * @return string
	 * @see csstidy_print::_print()
	 * @access private
	 * @version 1.0
	 */
	public function _htmlsp($string, $plain) {
		if (!$plain) {
			return htmlspecialchars($string, ENT_QUOTES, 'utf-8');
		}
		return $string;
	}

	/**
	 * Get compression ratio
	 * @access public
	 * @return float
	 * @version 1.2
	 */
	public function get_ratio() {
		if (!$this-&gt;output_css_plain) {
			$this-&gt;formatted();
		}
		return round((strlen($this-&gt;input_css) - strlen($this-&gt;output_css_plain)) / strlen($this-&gt;input_css), 3) * 100;
	}

	/**
	 * Get difference between the old and new code in bytes and prints the code if necessary.
	 * @access public
	 * @return string
	 * @version 1.1
	 */
	public function get_diff() {
		if (!$this-&gt;output_css_plain) {
			$this-&gt;formatted();
		}

		$diff = strlen($this-&gt;output_css_plain) - strlen($this-&gt;input_css);

		if ($diff &gt; 0) {
			return '+' . $diff;
		} elseif ($diff == 0) {
			return '+-' . $diff;
		}

		return $diff;
	}

	/**
	 * Get the size of either input or output CSS in KB
	 * @param string $loc default is &quot;output&quot;
	 * @access public
	 * @return integer
	 * @version 1.0
	 */
	public function size($loc = 'output') {
		if ($loc === 'output' &amp;&amp; !$this-&gt;output_css) {
			$this-&gt;formatted();
		}

		if ($loc === 'input') {
			return (strlen($this-&gt;input_css) / 1000);
		} else {
			return (strlen($this-&gt;output_css_plain) / 1000);
		}
	}

}
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