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                                         $this->parser->log('Optimised @import : Removed "url("', 'Information');
 202                                 }
 203                                 else if (!preg_match('/^".+"$/',$this->import[$i])) {
 204                                         // fixes a bug for @import ".." instead of the expected @import url("..")
 205                                         // If it comes in due to @import ".." the "" will be missing and the output will become @import .. (which is an error)
 206                                         $this->import[$i] = '"' . $this->import[$i] . '"';
 207                                 }
 208
 209                                 $output .= $template[0] . '@import ' . $template[5] . $this->import[$i] . $template[6] . $template[13];
 210                         }
 211                 }
 212
 213                 if (!empty($this->namespace)) {
 214                         if (($p=strpos($this->namespace,"url("))!==false && substr($this->namespace, -1, 1) === ')') {
 215                                 $this->namespace = substr_replace($this->namespace,'"',$p,4);
 216                                 $this->namespace = substr($this->namespace, 0, -1) . '"';
 217                                 $this->parser->log('Optimised @namespace : Removed "url("', 'Information');
 218                         }
 219                         $output .= $template[0] . '@namespace ' . $template[5] . $this->namespace . $template[6] . $template[13];
 220                 }
 221
 222                 $in_at_out = '';
 223                 $out = & $output;
 224
 225                 foreach ($this->tokens as $key => $token) {
 226                         switch ($token[0]) {
 227                                 case AT_START:
 228                                         $out .= $template[0] . $this->_htmlsp($token[1], $plain) . $template[1];
 229                                         $out = & $in_at_out;
 230                                         break;
 231
 232                                 case SEL_START:
 233                                         if ($this->parser->get_cfg('lowercase_s'))
 234                                                 $token[1] = strtolower($token[1]);
 235                                         $out .= ( $token[1]{0} !== '@') ? $template[2] . $this->_htmlsp($token[1], $plain) : $template[0] . $this->_htmlsp($token[1], $plain);
 236                                         $out .= $template[3];
 237                                         break;
 238
 239                                 case PROPERTY:
 240                                         if ($this->parser->get_cfg('case_properties') === 2) {
 241                                                 $token[1] = strtoupper($token[1]);
 242                                         } elseif ($this->parser->get_cfg('case_properties') === 1) {
 243                                                 $token[1] = strtolower($token[1]);
 244                                         }
 245                                         $out .= $template[4] . $this->_htmlsp($token[1], $plain) . ':' . $template[5];
 246                                         break;
 247
 248                                 case VALUE:
 249                                         $out .= $this->_htmlsp($token[1], $plain);
 250                                         if ($this->_seeknocomment($key, 1) == SEL_END && $this->parser->get_cfg('remove_last_;')) {
 251                                                 $out .= str_replace(';', '', $template[6]);
 252                                         } else {
 253                                                 $out .= $template[6];
 254                                         }
 255                                         break;
 256
 257                                 case SEL_END:
 258                                         $out .= $template[7];
 259                                         if ($this->_seeknocomment($key, 1) != AT_END)
 260                                                 $out .= $template[8];
 261                                         break;
 262
 263                                 case AT_END:
 264                                         $out = & $output;
 265                                         $in_at_out = str_replace("\n\n", "\r\n", $in_at_out); // don't fill empty lines
 266                                         $in_at_out = str_replace("\n", "\n" . $template[10], $in_at_out);
 267                                         $in_at_out = str_replace("\r\n", "\n\n", $in_at_out);
 268                                         $out .= $template[10] . $in_at_out . $template[9];
 269                                         $in_at_out = '';
 270                                         break;
 271
 272                                 case COMMENT:
 273                                         $out .= $template[11] . '/*' . $this->_htmlsp($token[1], $plain) . '*/' . $template[12];
 274                                         break;
 275                         }
 276                 }
 277
 278                 $output = trim($output);
 279
 280                 if (!$plain) {
 281                         $this->output_css = $output;
 282                         $this->_print(true);
 283                 } else {
 284                         // If using spaces in the template, don't want these to appear in the plain output
 285                         $this->output_css_plain = str_replace('&#160;', '', $output);
 286                 }
 287         }
 288
 289         /**
 290          * Gets the next token type which is $move away from $key, excluding comments
 291          * @param integer $key current position
 292          * @param integer $move move this far
 293          * @return mixed a token type
 294          * @access private
 295          * @version 1.0
 296          */
 297         public function _seeknocomment($key, $move) {
 298                 $go = ($move > 0) ? 1 : -1;
 299                 for ($i = $key + 1; abs($key - $i) - 1 < abs($move); $i += $go) {
 300                         if (!isset($this->tokens[$i])) {
 301                                 return;
 302                         }
 303                         if ($this->tokens[$i][0] == COMMENT) {
 304                                 $move += 1;
 305                                 continue;
 306                         }
 307                         return $this->tokens[$i][0];
 308                 }
 309         }
 310
 311         /**
 312          * Converts $this->css array to a raw array ($this->tokens)
 313          * @param string $default_media default @media to add to selectors without any @media
 314          * @access private
 315          * @version 1.0
 316          */
 317         public function _convert_raw_css($default_media='') {
 318                 $this->tokens = array();
 319                 $sort_selectors = $this->parser->get_cfg('sort_selectors');
 320                 $sort_properties = $this->parser->get_cfg('sort_properties');
 321
 322                 foreach ($this->css as $medium => $val) {
 323                         if ($sort_selectors)
 324                                 ksort($val);
 325                         if (intval($medium) < DEFAULT_AT) {
 326                                 // un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
 327                                 if (strlen(trim($medium))) {
 328                                         $this->parser->_add_token(AT_START, $medium, true);
 329                                 }
 330                         } elseif ($default_media) {
 331                                 $this->parser->_add_token(AT_START, $default_media, true);
 332                         }
 333
 334                         foreach ($val as $selector => $vali) {
 335                                 if ($sort_properties)
 336                                         ksort($vali);
 337                                 $this->parser->_add_token(SEL_START, $selector, true);
 338
 339                                 $invalid = array(
 340                                         '*' => array(), // IE7 hacks first
 341                                         '_' => array(), // IE6 hacks
 342                                         '/' => array(), // IE6 hacks
 343                                         '-' => array()  // IE6 hacks
 344                                 );
 345                                 foreach ($vali as $property => $valj) {
 346                                         if (strncmp($property,"//",2)!==0) {
 347                                                 $matches = array();
 348                                                 if ($sort_properties && preg_match('/^(\*|_|\/|-)(?!(ms|moz|o\b|xv|atsc|wap|khtml|webkit|ah|hp|ro|rim|tc)-)/', $property, $matches)) {
 349                                                         $invalid[$matches[1]][$property] = $valj;
 350                                                 } else {
 351                                                         $this->parser->_add_token(PROPERTY, $property, true);
 352                                                         $this->parser->_add_token(VALUE, $valj, true);
 353                                                 }
 354                                         }
 355                                 }
 356                                 foreach ($invalid as $prefix => $props) {
 357                                         foreach ($props as $property => $valj) {
 358                                                 $this->parser->_add_token(PROPERTY, $property, true);
 359                                                 $this->parser->_add_token(VALUE, $valj, true);
 360                                         }
 361                                 }
 362                                 $this->parser->_add_token(SEL_END, $selector, true);
 363                         }
 364
 365                         if (intval($medium) < DEFAULT_AT) {
 366                                 // un medium vide (contenant @font-face ou autre @) ne produit aucun conteneur
 367                                 if (strlen(trim($medium))) {
 368                                         $this->parser->_add_token(AT_END, $medium, true);
 369                                 }
 370                         } elseif ($default_media) {
 371                                 $this->parser->_add_token(AT_END, $default_media, true);
 372                         }
 373                 }
 374         }
 375
 376         /**
 377          * Same as htmlspecialchars, only that chars are not replaced if $plain !== true. This makes  print_code() cleaner.
 378          * @param string $string
 379          * @param bool $plain
 380          * @return string
 381          * @see csstidy_print::_print()
 382          * @access private
 383          * @version 1.0
 384          */
 385         public function _htmlsp($string, $plain) {
 386                 if (!$plain) {
 387                         return htmlspecialchars($string, ENT_QUOTES, 'utf-8');
 388                 }
 389                 return $string;
 390         }
 391
 392         /**
 393          * Get compression ratio
 394          * @access public
 395          * @return float
 396          * @version 1.2
 397          */
 398         public function get_ratio() {
 399                 if (!$this->output_css_plain) {
 400                         $this->formatted();
 401                 }
 402                 return round((strlen($this->input_css) - strlen($this->output_css_plain)) / strlen($this->input_css), 3) * 100;
 403         }
 404
 405         /**
 406          * Get difference between the old and new code in bytes and prints the code if necessary.
 407          * @access public
 408          * @return string
 409          * @version 1.1
 410          */
 411         public function get_diff() {
 412                 if (!$this->output_css_plain) {
 413                         $this->formatted();
 414                 }
 415
 416                 $diff = strlen($this->output_css_plain) - strlen($this->input_css);
 417
 418                 if ($diff > 0) {
 419                         return '+' . $diff;
 420                 } elseif ($diff == 0) {
 421                         return '+-' . $diff;
 422                 }
 423
 424                 return $diff;
 425         }
 426
 427         /**
 428          * Get the size of either input or output CSS in KB
 429          * @param string $loc default is "output"
 430          * @access public
 431          * @return integer
 432          * @version 1.0
 433          */
 434         public function size($loc = 'output') {
 435                 if ($loc === 'output' && !$this->output_css) {
 436                         $this->formatted();
 437                 }
 438
 439                 if ($loc === 'input') {
 440                         return (strlen($this->input_css) / 1000);
 441                 } else {
 442                         return (strlen($this->output_css_plain) / 1000);
 443                 }
 444         }
 445
 446 }