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