www/plugins-dist/compresseur/lib/csstidy/class.csstidy_print.php

   1 <?php
   2
   3 /**
   4  * CSSTidy - CSS Parser and Optimiser
   5  *
   6  * CSS Printing class
   7  * This class prints CSS data generated by csstidy.
   8  *
   9  * Copyright 2005, 2006, 2007 Florian Schmitz
  10  *
  11  * This file is part of CSSTidy.
  12  *
  13  *   CSSTidy is free software; you can redistribute it and/or modify
  14  *   it under the terms of the GNU Lesser General Public License as published by
  15  *   the Free Software Foundation; either version 2.1 of the License, or
  16  *   (at your option) any later version.
  17  *
  18  *   CSSTidy is distributed in the hope that it will be useful,
  19  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *   GNU Lesser General Public License for more details.
  22  *
  23  *   You should have received a copy of the GNU Lesser General Public License
  24  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  *
  26  * @license http://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License
  27  * @package csstidy
  28  * @author Florian Schmitz (floele at gmail dot com) 2005-2007
  29  * @author Brett Zamir (brettz9 at yahoo dot com) 2007
  30  * @author Cedric Morin (cedric at yterium dot com) 2010-2012
  31  */
  32
  33 /**
  34  * CSS Printing class
  35  *
  36  * This class prints CSS data generated by csstidy.
  37  *
  38  * @package csstidy
  39  * @author Florian Schmitz (floele at gmail dot com) 2005-2006
  40  * @version 1.1.0
  41  */
  42 class csstidy_print {
  43
  44         /**
  45          * csstidy object
  46          * @var object
  47          */
  48         public $parser;
  49
  50         /**
  51          * Saves the input CSS string
  52          * @var string
  53          * @access private
  54          */
  55         public $input_css = '';
  56         /**
  57          * Saves the formatted CSS string
  58          * @var string
  59          * @access public
  60          */
  61         public $output_css = '';
  62         /**
  63          * Saves the formatted CSS string (plain text)
  64          * @var string
  65          * @access public
  66          */
  67         public $output_css_plain = '';
  68
  69         /**
  70          * Constructor
  71          * @param array $css contains the class csstidy
  72          * @access private
  73          * @version 1.0
  74          */
  75         public function __construct($css) {
  76                 $this->parser = $css;
  77                 $this->css = & $css->css;
  78                 $this->template = & $css->template;
  79                 $this->tokens = & $css->tokens;
  80                 $this->charset = & $css->charset;
  81                 $this->import = & $css->import;
  82                 $this->namespace = & $css->namespace;
  83         }
  84
  85         /**
  86          * Resets output_css and output_css_plain (new css code)
  87          * @access private
  88          * @version 1.0
  89          */
  90         public function _reset() {
  91                 $this->output_css = '';
  92                 $this->output_css_plain = '';
  93         }
  94
  95         /**
  96          * Returns the CSS code as plain text
  97          * @param string $default_media default @media to add to selectors without any @media
  98          * @return string
  99          * @access public
 100          * @version 1.0
 101          */
 102         public function plain($default_media='') {
 103                 $this->_print(true, $default_media);
 104                 return $this->output_css_plain;
 105         }
 106
 107         /**
 108          * Returns the formatted CSS code
 109          * @param string $default_media default @media to add to selectors without any @media
 110          * @return string
 111          * @access public
 112          * @version 1.0
 113          */
 114         public function formatted($default_media='') {
 115                 $this->_print(false, $default_media);
 116                 return $this->output_css;
 117         }
 118
 119         /**
 120          * Returns the formatted CSS code to make a complete webpage
 121          * @param string $doctype shorthand for the document type
 122          * @param bool $externalcss indicates whether styles to be attached internally or as an external stylesheet
 123          * @param string $title title to be added in the head of the document
 124          * @param string $lang two-letter language code to be added to the output
 125          * @return string
 126          * @access public
 127          * @version 1.4
 128          */
 129         public function formatted_page($doctype='html5', $externalcss=true, $title='', $lang='en') {
 130                 switch ($doctype) {
 131                         case 'html5':
 132                                 $doctype_output = '<!DOCTYPE html>';
 133                                 break;
 134                                 case 'xhtml1.0strict':
 135                                 $doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
 136                         "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
 137                                 break;
 138                         case 'xhtml1.1':
 139                         default:
 140                                 $doctype_output = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
 141                                 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">';
 142                                 break;
 143                 }
 144
 145                 $output = $cssparsed = '';
 146                 $this->output_css_plain = & $output;
 147
 148                 $output .= $doctype_output . "\n" . '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="' . $lang . '"';
 149                 $output .= ( $doctype === 'xhtml1.1') ? '>' : ' lang="' . $lang . '">';
 150                 $output .= "\n<head>\n    <title>$title</title>";
 151
 152                 if ($externalcss) {
 153                         $output .= "\n    <style type=\"text/css\">\n";
 154                         $cssparsed = file_get_contents('cssparsed.css');
 155                         $output .= $cssparsed; // Adds an invisible BOM or something, but not in css_optimised.php
 156                         $output .= "\n</style>";
 157                 } else {
 158                         $output .= "\n" . '    <link rel="stylesheet" type="text/css" href="cssparsed.css" />';
 159                 }
 160                 $output .= "\n</head>\n<body><code id=\"copytext\">";
 161                 $output .= $this->formatted();
 162                 $output .= '</code>' . "\n" . '</body></html>';
 163                 return $this->output_css_plain;
 164         }
 165
 166         /**
 167          * Returns the formatted CSS Code and saves it into $this->output_css and $this->output_css_plain
 168          * @param bool $plain plain text or not
 169          * @param string $default_media default @media to add to selectors without any @media
 170          * @access private
 171          * @version 2.0
 172          */
 173         public function _print($plain = false, $default_media='') {
 174                 if ($this->output_css && $this->output_css_plain) {
 175                         return;
 176                 }
 177
 178                 $output = '';
 179                 if (!$this->parser->get_cfg('preserve_css')) {
 180                         $this->_convert_raw_css($default_media);
 181                 }
 182
 183                 $template = & $this->template;
 184
 185                 if ($plain) {
 186                         $template = array_map('strip_tags', $template);
 187                 }
 188
 189                 if ($this->parser->get_cfg('timestamp')) {
 190                         array_unshift($this->tokens, array(COMMENT, ' CSSTidy ' . $this->parser->version . ': ' . date('r') . ' '));
 191                 }
 192
 193                 if (!empty($this->charset)) {
 194                         $output .= $template[0] . '@charset ' . $template[5] . $this->charset . $template[6] . $template[13];
 195                 }
 196
 197                 if (!empty($this->import)) {
 198                         for ($i = 0, $size = count($this->import); $i < $size; $i++) {
 199                                 if (substr($this->import[$i], 0, 4) === 'url(' && substr($this->import[$i], -1, 1) === ')') {
 200                                         $this->import[$i] = '"' . substr($this->import[$i], 4, -1) . '"';
 201                                         $this->parser->log('Optimised @import : Removed "url("', 'Information');
 202                                 }
 203                                 $output .= $template[0] . '@import ' . $template[5] . $this->import[$i] . $template[6] . $template[13];
 204                         }
 205                 }
 206
 207                 if (!empty($this->namespace)) {
 208                         if (($p=strpos($this->namespace,"url("))!==false && substr($this->namespace, -1, 1) === ')') {
 209                                 $this->namespace = substr_replace($this->namespace,'"',$p,4);
 210                                 $this->namespace = substr($this->namespace, 0, -1) . '"';
 211                                 $this->parser->log('Optimised @namespace : Removed "url("', 'Information');
 212                         }
 213                         $output .= $template[0] . '@namespace ' . $template[5] . $this->namespace . $template[6] . $template[13];
 214                 }
 215
 216                 $in_at_out = '';
 217                 $out = & $output;
 218
 219                 foreach ($this->tokens as $key => $token) {
 220                         switch ($token[0]) {
 221                                 case AT_START:
 222                                         $out .= $template[0] . $this->_htmlsp($token[1], $plain) . $template[1];
 223                                         $out = & $in_at_out;
 224                                         break;
 225
 226                                 case SEL_START:
 227                                         if ($this->parser->get_cfg('lowercase_s'))
 228                                                 $token[1] = strtolower($token[1]);
 229                                         $out .= ( $token[1]{0} !== '@') ? $template[2] . $this->_htmlsp($token[1], $plain) : $template[0] . $this->_htmlsp($token[1], $plain);
 230                                         $out .= $template[3];
 231                                         break;
 232
 233                                 case PROPERTY:
 234                                         if ($this->parser->get_cfg('case_properties') === 2) {
 235                                                 $token[1] = strtoupper($token[1]);
 236                                         } elseif ($this->parser->get_cfg('case_properties') === 1) {
 237                                                 $token[1] = strtolower($token[1]);
 238                                         }
 239                                         $out .= $template[4] . $this->_htmlsp($token[1], $plain) . ':' . $template[5];
 240                                         break;
 241
 242                                 case VALUE:
 243                                         $out .= $this->_htmlsp($token[1], $plain);
 244                                         if ($this->_seeknocomment($key, 1) == SEL_END && $this->parser->get_cfg('remove_last_;')) {
 245                                                 $out .= str_replace(';', '', $template[6]);
 246                                         } else {
 247                                                 $out .= $template[6];
 248                                         }
 249                                         break;
 250
 251                                 case SEL_END:
 252                                         $out .= $template[7];
 253                                         if ($this->_seeknocomment($key, 1) != AT_END)
 254                                                 $out .= $template[8];
 255                                         break;
 256
 257                                 case AT_END:
 258                                         $out = & $output;
 259                                         $in_at_out = str_replace("\n\n", "\r\n", $in_at_out); // don't fill empty lines
 260                                         $in_at_out = str_replace("\n", "\n" . $template[10], $in_at_out);
 261                                         $in_at_out = str_replace("\r\n", "\n\n", $in_at_out);
 262                                         $out .= $template[10] . $in_at_out . $template[9];
 263                                         $in_at_out = '';
 264                                         break;
 265
 266                                 case COMMENT:
 267                                         $out .= $template[11] . '/*' . $this->_htmlsp($token[1], $plain) . '*/' . $template[12];
 268                                         break;
 269                         }
 270                 }
 271
 272                 $output = trim($output);
 273
 274                 if (!$plain) {
 275                         $this->output_css = $output;
 276                         $this->_print(true);
 277                 } else {
 278                         // If using spaces in the template, don't want these to appear in the plain output
 279                         $this->output_css_plain = str_replace('&#160;', '', $output);
 280                 }
 281         }
 282
 283         /**
 284          * Gets the next token type which is $move away from $key, excluding comments
 285          * @param integer $key current position
 286          * @param integer $move move this far
 287          * @return mixed a token type
 288          * @access private
 289          * @version 1.0
 290          */
 291         public function _seeknocomment($key, $move) {
 292                 $go = ($move > 0) ? 1 : -1;
 293                 for ($i = $key + 1; abs($key - $i) - 1 < abs($move); $i += $go) {
 294                         if (!isset($this->tokens[$i])) {
 295                                 return;
 296                         }
 297                         if ($this->tokens[$i][0] == COMMENT) {
 298                                 $move += 1;
 299                                 continue;
 300                         }
 301                         return $this->tokens[$i][0];
 302                 }
 303         }
 304
 305         /**
 306          * Converts $this->css array to a raw array ($this->tokens)
 307          * @param string $default_media default @media to add to selectors without any @media
 308          * @access private
 309          * @version 1.0
 310          */
 311         public function _convert_raw_css($default_media='') {
 312                 $this->tokens = array();
 313                 $sort_selectors = $this->parser->get_cfg('sort_selectors');
 314                 $sort_properties = $this->parser->get_cfg('sort_properties');
 315
 316                 foreach ($this->css as $medium => $val) {
 317                         if ($sort_selectors)
 318                                 ksort($val);
 319                         if (intval($medium) < DEFAULT_AT) {
 320                                 // un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
 321                                 if (strlen(trim($medium))) {
 322                                         $this->parser->_add_token(AT_START, $medium, true);
 323                                 }
 324                         } elseif ($default_media) {
 325                                 $this->parser->_add_token(AT_START, $default_media, true);
 326                         }
 327
 328                         foreach ($val as $selector => $vali) {
 329                                 if ($sort_properties)
 330                                         ksort($vali);
 331                                 $this->parser->_add_token(SEL_START, $selector, true);
 332
 333                                 $invalid = array(
 334                                         '*' => array(), // IE7 hacks first
 335                                         '_' => array(), // IE6 hacks
 336                                         '/' => array(), // IE6 hacks
 337                                         '-' => array()  // IE6 hacks
 338                                 );
 339                                 foreach ($vali as $property => $valj) {
 340                                         if (strncmp($property,"//",2)!==0) {
 341                                                 $matches = array();
 342                                                 if ($sort_properties && preg_match('/^(\*|_|\/|-)(?!(ms|moz|o\b|xv|atsc|wap|khtml|webkit|ah|hp|ro|rim|tc)-)/', $property, $matches)) {
 343                                                         $invalid[$matches[1]][$property] = $valj;
 344                                                 } else {
 345                                                         $this->parser->_add_token(PROPERTY, $property, true);
 346                                                         $this->parser->_add_token(VALUE, $valj, true);
 347                                                 }
 348                                         }
 349                                 }
 350                                 foreach ($invalid as $prefix => $props) {
 351                                         foreach ($props as $property => $valj) {
 352                                                 $this->parser->_add_token(PROPERTY, $property, true);
 353                                                 $this->parser->_add_token(VALUE, $valj, true);
 354                                         }
 355                                 }
 356                                 $this->parser->_add_token(SEL_END, $selector, true);
 357                         }
 358
 359                         if (intval($medium) < DEFAULT_AT) {
 360                                 // un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
 361                                 if (strlen(trim($medium))) {
 362                                         $this->parser->_add_token(AT_END, $medium, true);
 363                                 }
 364                         } elseif ($default_media) {
 365                                 $this->parser->_add_token(AT_END, $default_media, true);
 366                         }
 367                 }
 368         }
 369
 370         /**
 371          * Same as htmlspecialchars, only that chars are not replaced if $plain !== true. This makes  print_code() cleaner.
 372          * @param string $string
 373          * @param bool $plain
 374          * @return string
 375          * @see csstidy_print::_print()
 376          * @access private
 377          * @version 1.0
 378          */
 379         public function _htmlsp($string, $plain) {
 380                 if (!$plain) {
 381                         return htmlspecialchars($string, ENT_QUOTES, 'utf-8');
 382                 }
 383                 return $string;
 384         }
 385
 386         /**
 387          * Get compression ratio
 388          * @access public
 389          * @return float
 390          * @version 1.2
 391          */
 392         public function get_ratio() {
 393                 if (!$this->output_css_plain) {
 394                         $this->formatted();
 395                 }
 396                 return round((strlen($this->input_css) - strlen($this->output_css_plain)) / strlen($this->input_css), 3) * 100;
 397         }
 398
 399         /**
 400          * Get difference between the old and new code in bytes and prints the code if necessary.
 401          * @access public
 402          * @return string
 403          * @version 1.1
 404          */
 405         public function get_diff() {
 406                 if (!$this->output_css_plain) {
 407                         $this->formatted();
 408                 }
 409
 410                 $diff = strlen($this->output_css_plain) - strlen($this->input_css);
 411
 412                 if ($diff > 0) {
 413                         return '+' . $diff;
 414                 } elseif ($diff == 0) {
 415                         return '+-' . $diff;
 416                 }
 417
 418                 return $diff;
 419         }
 420
 421         /**
 422          * Get the size of either input or output CSS in KB
 423          * @param string $loc default is "output"
 424          * @access public
 425          * @return integer
 426          * @version 1.0
 427          */
 428         public function size($loc = 'output') {
 429                 if ($loc === 'output' && !$this->output_css) {
 430                         $this->formatted();
 431                 }
 432
 433                 if ($loc === 'input') {
 434                         return (strlen($this->input_css) / 1000);
 435                 } else {
 436                         return (strlen($this->output_css_plain) / 1000);
 437                 }
 438         }
 439
 440 }