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Editing: class.csstidy_print.php

<?php

/**
 * 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 <http://www.gnu.org/licenses/>.
 *
 * @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->parser = $css;
		$this->css = & $css->css;
		$this->template = & $css->template;
		$this->tokens = & $css->tokens;
		$this->charset = & $css->charset;
		$this->import = & $css->import;
		$this->namespace = & $css->namespace;
	}

/**
	 * Resets output_css and output_css_plain (new css code)
	 * @access private
	 * @version 1.0
	 */
	public function _reset() {
		$this->output_css = '';
		$this->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->_print(true, $default_media);
		return $this->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->_print(false, $default_media);
		return $this->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 = '<!DOCTYPE html>';
				break;
				case 'xhtml1.0strict':
				$doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
			"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
				break;
			case 'xhtml1.1':
			default:
				$doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
				"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">';
				break;
		}

$output = $cssparsed = '';
		$this->output_css_plain = & $output;

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

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

/**
	 * Returns the formatted CSS Code and saves it into $this->output_css and $this->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->output_css && $this->output_css_plain) {
			return;
		}

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

$template = & $this->template;

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

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

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

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

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

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

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

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

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

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

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

case SEL_END:
					$out .= $template[7];
					if ($this->_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("\n\n", "\r\n", $out); // don't fill empty lines
						$out = str_replace("\n", "\n" . $template[10], $out);
						$out = str_replace("\r\n", "\n\n", $out);
					}
					if ($indent_level > 1) {
						$out = & $in_at_out[$indent_level-1];
					}
					else {
						$out = & $output;
					}
					$out .= $template[10] . $in_at_out[$indent_level];
					if ($this->_seeknocomment($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] . '/*' . $this->_htmlsp($token[1], $plain) . '*/' . $template[12];
					break;
			}
		}

$output = trim($output);

if (!$plain) {
			$this->output_css = $output;
			$this->_print(true);
		} else {
			// If using spaces in the template, don't want these to appear in the plain output
			$this->output_css_plain = str_replace('&#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 > 0) ? 1 : -1;
		for ($i = $key + 1; abs($key - $i) - 1 < abs($move); $i += $go) {
			if (!isset($this->tokens[$i])) {
				return;
			}
			if ($this->tokens[$i][0] == COMMENT) {
				$move += 1;
				continue;
			}
			return $this->tokens[$i][0];
		}
	}

/**
	 * Converts $this->css array to a raw array ($this->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->tokens = array();
		$sort_selectors = $this->parser->get_cfg('sort_selectors');
		$sort_properties = $this->parser->get_cfg('sort_properties');

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

foreach ($this->css as $medium => $val) {
			if ($sort_selectors)
				ksort($val);
			if (intval($medium) < 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->parser->_add_token(AT_START, $part, true);
					}
				}
			} elseif ($default_media) {
				$this->parser->_add_token(AT_START, $default_media, true);
			}

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

$invalid = array(
					'*' => array(), // IE7 hacks first
					'_' => array(), // IE6 hacks
					'/' => array(), // IE6 hacks
					'-' => array()  // IE6 hacks
				);
				foreach ($vali as $property => $valj) {
					if (strncmp($property,"//",2)!==0) {
						$matches = array();
						if ($sort_properties && 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->parser->_add_token(PROPERTY, $property, true);
							$this->parser->_add_token(VALUE, $valj, true);
						}
					}
				}
				foreach ($invalid as $prefix => $props) {
					foreach ($props as $property => $valj) {
						$this->parser->_add_token(PROPERTY, $property, true);
						$this->parser->_add_token(VALUE, $valj, true);
					}
				}
				$this->parser->_add_token(SEL_END, $selector, true);
			}

if (intval($medium) < DEFAULT_AT) {
				// un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
				if (strlen(trim($medium))) {
					$parts_to_close = explode('{', $medium);
					foreach (array_reverse($parts_to_close) as $part) {
						$this->parser->_add_token(AT_END, $part, true);
					}
				}
			} elseif ($default_media) {
				$this->parser->_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->output_css_plain) {
			$this->formatted();
		}
		return round((strlen($this->input_css) - strlen($this->output_css_plain)) / strlen($this->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->output_css_plain) {
			$this->formatted();
		}

$diff = strlen($this->output_css_plain) - strlen($this->input_css);

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

return $diff;
	}

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

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

}

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