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class.csstidy-optimise.php
1007 lines
| 1 | <?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName |
| 2 | /** |
| 3 | * CSSTidy - CSS Parser and Optimiser |
| 4 | * |
| 5 | * CSS Optimising Class |
| 6 | * This class optimises CSS data generated by csstidy. |
| 7 | * |
| 8 | * Copyright 2005, 2006, 2007 Florian Schmitz |
| 9 | * |
| 10 | * This file is part of CSSTidy. |
| 11 | * |
| 12 | * CSSTidy is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU Lesser General Public License as published by |
| 14 | * the Free Software Foundation; either version 2.1 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * CSSTidy is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU Lesser General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Lesser General Public License |
| 23 | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
| 24 | * |
| 25 | * @license https://opensource.org/licenses/lgpl-license.php GNU Lesser General Public License |
| 26 | * @package csstidy |
| 27 | * @author Florian Schmitz (floele at gmail dot com) 2005-2007 |
| 28 | * @author Brett Zamir (brettz9 at yahoo dot com) 2007 |
| 29 | * @author Nikolay Matsievsky (speed at webo dot name) 2009-2010 |
| 30 | */ |
| 31 | |
| 32 | /** |
| 33 | * CSS Optimising Class |
| 34 | * |
| 35 | * This class optimises CSS data generated by csstidy. |
| 36 | * |
| 37 | * @package csstidy |
| 38 | * @author Florian Schmitz (floele at gmail dot com) 2005-2006 |
| 39 | * @version 1.0 |
| 40 | */ |
| 41 | #[AllowDynamicProperties] |
| 42 | class csstidy_optimise { // phpcs:ignore |
| 43 | /** |
| 44 | * Constructor |
| 45 | * |
| 46 | * @param array $css contains the class csstidy. |
| 47 | * @access private |
| 48 | * @version 1.0 |
| 49 | */ |
| 50 | public function __construct( &$css ) { |
| 51 | $this->parser = & $css; |
| 52 | $this->css = & $css->css; |
| 53 | $this->sub_value = & $css->sub_value; |
| 54 | $this->at = & $css->at; |
| 55 | $this->selector = & $css->selector; |
| 56 | $this->property = & $css->property; |
| 57 | $this->value = & $css->value; |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Call constructor function. |
| 62 | * |
| 63 | * @param object $css - the CSS. |
| 64 | */ |
| 65 | public function csstidy_optimise( &$css ) { |
| 66 | $this->__construct( $css ); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Optimises $css after parsing |
| 71 | * |
| 72 | * @access public |
| 73 | * @version 1.0 |
| 74 | */ |
| 75 | public function postparse() { |
| 76 | if ( $this->parser->get_cfg( 'preserve_css' ) ) { |
| 77 | return; |
| 78 | } |
| 79 | |
| 80 | if ( $this->parser->get_cfg( 'merge_selectors' ) === 2 ) { |
| 81 | foreach ( $this->css as $medium => $value ) { |
| 82 | $this->merge_selectors( $this->css[ $medium ] ); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | if ( $this->parser->get_cfg( 'discard_invalid_selectors' ) ) { |
| 87 | foreach ( $this->css as $medium => $value ) { |
| 88 | $this->discard_invalid_selectors( $this->css[ $medium ] ); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | if ( $this->parser->get_cfg( 'optimise_shorthands' ) > 0 ) { |
| 93 | foreach ( $this->css as $medium => $value ) { |
| 94 | foreach ( $value as $selector => $value1 ) { |
| 95 | $this->css[ $medium ][ $selector ] = self::merge_4value_shorthands( $this->css[ $medium ][ $selector ] ); |
| 96 | |
| 97 | if ( $this->parser->get_cfg( 'optimise_shorthands' ) < 2 ) { |
| 98 | continue; |
| 99 | } |
| 100 | |
| 101 | $this->css[ $medium ][ $selector ] = self::merge_font( $this->css[ $medium ][ $selector ] ); |
| 102 | |
| 103 | if ( $this->parser->get_cfg( 'optimise_shorthands' ) < 3 ) { |
| 104 | continue; |
| 105 | } |
| 106 | |
| 107 | $this->css[ $medium ][ $selector ] = self::merge_bg( $this->css[ $medium ][ $selector ] ); |
| 108 | if ( empty( $this->css[ $medium ][ $selector ] ) ) { |
| 109 | unset( $this->css[ $medium ][ $selector ] ); |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Optimises values |
| 118 | * |
| 119 | * @access public |
| 120 | * @version 1.0 |
| 121 | */ |
| 122 | public function value() { |
| 123 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
| 124 | |
| 125 | // optimise shorthand properties. |
| 126 | if ( isset( $shorthands[ $this->property ] ) ) { |
| 127 | $temp = self::shorthand( $this->value ); // FIXME - move. |
| 128 | if ( $temp !== $this->value ) { |
| 129 | $this->parser->log( 'Optimised shorthand notation (' . $this->property . '): Changed "' . $this->value . '" to "' . $temp . '"', 'Information' ); |
| 130 | } |
| 131 | $this->value = $temp; |
| 132 | } |
| 133 | |
| 134 | // Remove whitespace at ! important. |
| 135 | if ( $this->value !== $this->compress_important( $this->value ) ) { |
| 136 | $this->parser->log( 'Optimised !important', 'Information' ); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Optimises shorthands |
| 142 | * |
| 143 | * @access public |
| 144 | * @version 1.0 |
| 145 | */ |
| 146 | public function shorthands() { |
| 147 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
| 148 | |
| 149 | if ( ! $this->parser->get_cfg( 'optimise_shorthands' ) || $this->parser->get_cfg( 'preserve_css' ) ) { |
| 150 | return; |
| 151 | } |
| 152 | |
| 153 | if ( $this->property === 'font' && $this->parser->get_cfg( 'optimise_shorthands' ) > 1 ) { |
| 154 | $this->css[ $this->at ][ $this->selector ]['font'] = ''; |
| 155 | $this->parser->merge_css_blocks( $this->at, $this->selector, self::dissolve_short_font( $this->value ) ); |
| 156 | } |
| 157 | if ( $this->property === 'background' && $this->parser->get_cfg( 'optimise_shorthands' ) > 2 ) { |
| 158 | $this->css[ $this->at ][ $this->selector ]['background'] = ''; |
| 159 | $this->parser->merge_css_blocks( $this->at, $this->selector, self::dissolve_short_bg( $this->value ) ); |
| 160 | } |
| 161 | if ( isset( $shorthands[ $this->property ] ) ) { |
| 162 | $this->parser->merge_css_blocks( $this->at, $this->selector, self::dissolve_4value_shorthands( $this->property, $this->value ) ); |
| 163 | if ( is_array( $shorthands[ $this->property ] ) ) { |
| 164 | $this->css[ $this->at ][ $this->selector ][ $this->property ] = ''; |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Optimises a sub-value |
| 171 | * |
| 172 | * @access public |
| 173 | * @version 1.0 |
| 174 | */ |
| 175 | public function subvalue() { |
| 176 | $replace_colors = & $GLOBALS['csstidy']['replace_colors']; |
| 177 | |
| 178 | $this->sub_value = trim( $this->sub_value ); |
| 179 | if ( $this->sub_value === '' ) { |
| 180 | return; |
| 181 | } |
| 182 | |
| 183 | $important = ''; |
| 184 | if ( csstidy::is_important( $this->sub_value ) ) { |
| 185 | $important = '!important'; |
| 186 | } |
| 187 | $this->sub_value = csstidy::gvw_important( $this->sub_value ); |
| 188 | |
| 189 | // Compress font-weight. |
| 190 | if ( $this->property === 'font-weight' && $this->parser->get_cfg( 'compress_font-weight' ) ) { |
| 191 | if ( $this->sub_value === 'bold' ) { |
| 192 | $this->sub_value = '700'; |
| 193 | $this->parser->log( 'Optimised font-weight: Changed "bold" to "700"', 'Information' ); |
| 194 | } elseif ( $this->sub_value === 'normal' ) { |
| 195 | $this->sub_value = '400'; |
| 196 | $this->parser->log( 'Optimised font-weight: Changed "normal" to "400"', 'Information' ); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | $temp = $this->compress_numbers( $this->sub_value ); |
| 201 | if ( strcasecmp( $temp, $this->sub_value ) !== 0 ) { |
| 202 | if ( strlen( $temp ) > strlen( $this->sub_value ) ) { |
| 203 | $this->parser->log( 'Fixed invalid number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning' ); |
| 204 | } else { |
| 205 | $this->parser->log( 'Optimised number: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information' ); |
| 206 | } |
| 207 | $this->sub_value = $temp; |
| 208 | } |
| 209 | if ( $this->parser->get_cfg( 'compress_colors' ) ) { |
| 210 | $temp = $this->cut_color( $this->sub_value ); |
| 211 | if ( $temp !== $this->sub_value ) { |
| 212 | if ( isset( $replace_colors[ $this->sub_value ] ) ) { |
| 213 | $this->parser->log( 'Fixed invalid color name: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Warning' ); |
| 214 | } else { |
| 215 | $this->parser->log( 'Optimised color: Changed "' . $this->sub_value . '" to "' . $temp . '"', 'Information' ); |
| 216 | } |
| 217 | $this->sub_value = $temp; |
| 218 | } |
| 219 | } |
| 220 | $this->sub_value .= $important; |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Compresses shorthand values. Example: margin:1px 1px 1px 1px -> margin:1px |
| 225 | * |
| 226 | * @param string $value - the value. |
| 227 | * @access public |
| 228 | * @return string |
| 229 | * @version 1.0 |
| 230 | */ |
| 231 | public static function shorthand( $value ) { |
| 232 | $important = ''; |
| 233 | if ( csstidy::is_important( $value ) ) { |
| 234 | $values = csstidy::gvw_important( $value ); |
| 235 | $important = '!important'; |
| 236 | } else { |
| 237 | $values = $value; |
| 238 | } |
| 239 | |
| 240 | $values = explode( ' ', $values ); |
| 241 | switch ( count( $values ) ) { |
| 242 | case 4: |
| 243 | if ( $values[0] === $values[1] && $values[0] === $values[2] && $values[0] === $values[3] ) { |
| 244 | return $values[0] . $important; |
| 245 | } elseif ( $values[1] === $values[3] && $values[0] === $values[2] ) { |
| 246 | return $values[0] . ' ' . $values[1] . $important; |
| 247 | } elseif ( $values[1] === $values[3] ) { |
| 248 | return $values[0] . ' ' . $values[1] . ' ' . $values[2] . $important; |
| 249 | } |
| 250 | break; |
| 251 | |
| 252 | case 3: |
| 253 | if ( $values[0] === $values[1] && $values[0] === $values[2] ) { |
| 254 | return $values[0] . $important; |
| 255 | } elseif ( $values[0] === $values[2] ) { |
| 256 | return $values[0] . ' ' . $values[1] . $important; |
| 257 | } |
| 258 | break; |
| 259 | |
| 260 | case 2: |
| 261 | if ( $values[0] === $values[1] ) { |
| 262 | return $values[0] . $important; |
| 263 | } |
| 264 | break; |
| 265 | } |
| 266 | |
| 267 | return $value; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * Removes unnecessary whitespace in ! important |
| 272 | * |
| 273 | * @param string $string - the string. |
| 274 | * @return string |
| 275 | * @access public |
| 276 | * @version 1.1 |
| 277 | */ |
| 278 | public function compress_important( &$string ) { |
| 279 | if ( csstidy::is_important( $string ) ) { |
| 280 | $string = csstidy::gvw_important( $string ) . ' !important'; } |
| 281 | return $string; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Color compression function. Converts all rgb() values to #-values and uses the short-form if possible. Also replaces 4 color names by #-values. |
| 286 | * |
| 287 | * @param string $color - the color. |
| 288 | * @return string |
| 289 | * @version 1.1 |
| 290 | */ |
| 291 | public function cut_color( $color ) { |
| 292 | $replace_colors = & $GLOBALS['csstidy']['replace_colors']; |
| 293 | |
| 294 | // an example: rgb(0,0,0) -> #000000 (or #000 in this case later). |
| 295 | if ( strtolower( substr( $color, 0, 4 ) ) === 'rgb(' ) { |
| 296 | $color_tmp = substr( $color, 4, strlen( $color ) - 5 ); |
| 297 | $color_tmp = explode( ',', $color_tmp ); |
| 298 | for ( $i = 0, $l = count( $color_tmp ); $i < $l; $i++ ) { |
| 299 | $color_tmp[ $i ] = trim( $color_tmp[ $i ] ); |
| 300 | if ( substr( $color_tmp[ $i ], -1 ) === '%' ) { |
| 301 | $color_tmp[ $i ] = round( ( 255 * $color_tmp[ $i ] ) / 100 ); |
| 302 | } |
| 303 | if ( $color_tmp[ $i ] > 255 ) { |
| 304 | $color_tmp[ $i ] = 255; |
| 305 | } |
| 306 | } |
| 307 | $color = '#'; |
| 308 | for ( $i = 0; $i < 3; $i++ ) { |
| 309 | if ( $color_tmp[ $i ] < 16 ) { |
| 310 | $color .= '0' . dechex( $color_tmp[ $i ] ); |
| 311 | } else { |
| 312 | $color .= dechex( $color_tmp[ $i ] ); |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | // Fix bad color names. |
| 318 | if ( isset( $replace_colors[ strtolower( $color ) ] ) ) { |
| 319 | $color = $replace_colors[ strtolower( $color ) ]; |
| 320 | } |
| 321 | |
| 322 | // #aabbcc -> #abc |
| 323 | if ( strlen( $color ) === 7 ) { |
| 324 | $color_temp = strtolower( $color ); |
| 325 | if ( $color_temp[0] === '#' && $color_temp[1] === $color_temp[2] && $color_temp[3] === $color_temp[4] && $color_temp[5] === $color_temp[6] ) { |
| 326 | $color = '#' . $color[1] . $color[3] . $color[5]; |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | switch ( strtolower( $color ) ) { |
| 331 | /* color name -> hex code */ |
| 332 | case 'black': |
| 333 | return '#000'; |
| 334 | case 'fuchsia': |
| 335 | return '#f0f'; |
| 336 | case 'white': |
| 337 | return '#fff'; |
| 338 | case 'yellow': |
| 339 | return '#ff0'; |
| 340 | |
| 341 | /* hex code -> color name */ |
| 342 | case '#800000': |
| 343 | return 'maroon'; |
| 344 | case '#ffa500': |
| 345 | return 'orange'; |
| 346 | case '#808000': |
| 347 | return 'olive'; |
| 348 | case '#800080': |
| 349 | return 'purple'; |
| 350 | case '#008000': |
| 351 | return 'green'; |
| 352 | case '#000080': |
| 353 | return 'navy'; |
| 354 | case '#008080': |
| 355 | return 'teal'; |
| 356 | case '#c0c0c0': |
| 357 | return 'silver'; |
| 358 | case '#808080': |
| 359 | return 'gray'; |
| 360 | case '#f00': |
| 361 | return 'red'; |
| 362 | } |
| 363 | |
| 364 | return $color; |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Compresses numbers (ie. 1.0 becomes 1 or 1.100 becomes 1.1 ) |
| 369 | * |
| 370 | * @param string $subvalue - the subvalue. |
| 371 | * @return string |
| 372 | * @version 1.2 |
| 373 | */ |
| 374 | public function compress_numbers( $subvalue ) { |
| 375 | $unit_values = & $GLOBALS['csstidy']['unit_values']; |
| 376 | $color_values = & $GLOBALS['csstidy']['color_values']; |
| 377 | |
| 378 | // for font:1em/1em sans-serif...;. |
| 379 | if ( $this->property === 'font' ) { |
| 380 | $temp = explode( '/', $subvalue ); |
| 381 | } else { |
| 382 | $temp = array( $subvalue ); |
| 383 | } |
| 384 | |
| 385 | for ( $l = 0, $m = count( $temp ); $l < $m; $l++ ) { |
| 386 | // if we are not dealing with a number at this point, do not optimise anything. |
| 387 | $number = $this->analyse_css_number( $temp[ $l ] ); |
| 388 | if ( $number === false ) { |
| 389 | return $subvalue; |
| 390 | } |
| 391 | |
| 392 | // Fix bad colors. |
| 393 | if ( in_array( $this->property, $color_values, true ) ) { |
| 394 | if ( strlen( $temp[ $l ] ) === 3 || strlen( $temp[ $l ] ) === 6 ) { |
| 395 | $temp[ $l ] = '#' . $temp[ $l ]; |
| 396 | } else { |
| 397 | $temp[ $l ] = '0'; |
| 398 | } |
| 399 | continue; |
| 400 | } |
| 401 | |
| 402 | if ( abs( $number[0] ) > 0 ) { |
| 403 | if ( $number[1] === '' && in_array( $this->property, $unit_values, true ) ) { |
| 404 | $number[1] = 'px'; |
| 405 | } |
| 406 | } else { |
| 407 | $number[1] = ''; |
| 408 | } |
| 409 | |
| 410 | $temp[ $l ] = $number[0] . $number[1]; |
| 411 | } |
| 412 | |
| 413 | return ( ( count( $temp ) > 1 ) ? $temp[0] . '/' . $temp[1] : $temp[0] ); |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Checks if a given string is a CSS valid number. If it is, |
| 418 | * an array containing the value and unit is returned |
| 419 | * |
| 420 | * @param string $string - the string we're checking. |
| 421 | * @return array ('unit' if unit is found or '' if no unit exists, number value) or false if no number |
| 422 | */ |
| 423 | public function analyse_css_number( $string ) { |
| 424 | // most simple checks first |
| 425 | if ( $string === '' || ctype_alpha( $string[0] ) ) { |
| 426 | return false; |
| 427 | } |
| 428 | |
| 429 | $units = & $GLOBALS['csstidy']['units']; |
| 430 | $return = array( 0, '' ); |
| 431 | |
| 432 | $return[0] = (float) $string; |
| 433 | if ( abs( $return[0] ) > 0 && abs( $return[0] ) < 1 ) { |
| 434 | // Removes the initial `0` from a decimal number, e.g., `0.7 => .7` or `-0.666 => -.666`. |
| 435 | if ( ! $this->parser->get_cfg( 'preserve_leading_zeros' ) ) { |
| 436 | if ( $return[0] < 0 ) { |
| 437 | $return[0] = '-' . ltrim( substr( $return[0], 1 ), '0' ); |
| 438 | } else { |
| 439 | $return[0] = ltrim( $return[0], '0' ); |
| 440 | } |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | // Look for unit and split from value if exists |
| 445 | foreach ( $units as $unit ) { |
| 446 | $expect_unit_at = strlen( $string ) - strlen( $unit ); |
| 447 | $unit_in_string = stristr( $string, $unit ); |
| 448 | if ( ! $unit_in_string ) { // mb_strpos() fails with "false" |
| 449 | continue; |
| 450 | } |
| 451 | $actual_position = strpos( $string, $unit_in_string ); |
| 452 | if ( $expect_unit_at === $actual_position ) { |
| 453 | $return[1] = $unit; |
| 454 | $string = substr( $string, 0, - strlen( $unit ) ); |
| 455 | break; |
| 456 | } |
| 457 | } |
| 458 | if ( ! is_numeric( $string ) ) { |
| 459 | return false; |
| 460 | } |
| 461 | return $return; |
| 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Merges selectors with same properties. Example: a{color:red} b{color:red} -> a,b{color:red} |
| 466 | * Very basic and has at least one bug. Hopefully there is a replacement soon. |
| 467 | * |
| 468 | * @param array $array - the selector array. |
| 469 | * @access public |
| 470 | * @version 1.2 |
| 471 | */ |
| 472 | public function merge_selectors( &$array ) { |
| 473 | $css = $array; |
| 474 | foreach ( $css as $key => $value ) { |
| 475 | if ( ! isset( $css[ $key ] ) ) { |
| 476 | continue; |
| 477 | } |
| 478 | $newsel = ''; |
| 479 | |
| 480 | // Check if properties also exist in another selector. |
| 481 | $keys = array(); |
| 482 | // PHP bug (?) without $css = $array; here. |
| 483 | foreach ( $css as $selector => $vali ) { |
| 484 | if ( $selector === $key ) { |
| 485 | continue; |
| 486 | } |
| 487 | |
| 488 | if ( $css[ $key ] === $vali ) { |
| 489 | $keys[] = $selector; |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | if ( ! empty( $keys ) ) { |
| 494 | $newsel = $key; |
| 495 | unset( $css[ $key ] ); |
| 496 | foreach ( $keys as $selector ) { |
| 497 | unset( $css[ $selector ] ); |
| 498 | $newsel .= ',' . $selector; |
| 499 | } |
| 500 | $css[ $newsel ] = $value; |
| 501 | } |
| 502 | } |
| 503 | $array = $css; |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Removes invalid selectors and their corresponding rule-sets as |
| 508 | * defined by 4.1.7 in REC-CSS2. This is a very rudimentary check |
| 509 | * and should be replaced by a full-blown parsing algorithm or |
| 510 | * regular expression |
| 511 | * |
| 512 | * @version 1.4 |
| 513 | * |
| 514 | * @param array $array - selector array. |
| 515 | */ |
| 516 | public function discard_invalid_selectors( &$array ) { |
| 517 | foreach ( $array as $selector => $decls ) { |
| 518 | $ok = true; |
| 519 | $selectors = array_map( 'trim', explode( ',', $selector ) ); |
| 520 | foreach ( $selectors as $s ) { |
| 521 | $simple_selectors = preg_split( '/\s*[+>~\s]\s*/', $s ); |
| 522 | foreach ( $simple_selectors as $ss ) { |
| 523 | if ( $ss === '' ) { |
| 524 | $ok = false; |
| 525 | } |
| 526 | // could also check $ss for internal structure, but that probably would be too slow. |
| 527 | } |
| 528 | } |
| 529 | if ( ! $ok ) { |
| 530 | unset( $array[ $selector ] ); |
| 531 | } |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /** |
| 536 | * Dissolves properties like padding:10px 10px 10px to padding-top:10px;padding-bottom:10px;... |
| 537 | * |
| 538 | * @param string $property - the property. |
| 539 | * @param string $value - the value. |
| 540 | * @return array |
| 541 | * @version 1.0 |
| 542 | * @see merge_4value_shorthands() |
| 543 | */ |
| 544 | public static function dissolve_4value_shorthands( $property, $value ) { |
| 545 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
| 546 | if ( ! is_array( $shorthands[ $property ] ) ) { |
| 547 | $return = array(); |
| 548 | $return[ $property ] = $value; |
| 549 | return $return; |
| 550 | } |
| 551 | |
| 552 | $important = ''; |
| 553 | if ( csstidy::is_important( $value ) ) { |
| 554 | $value = csstidy::gvw_important( $value ); |
| 555 | $important = '!important'; |
| 556 | } |
| 557 | $values = explode( ' ', $value ); |
| 558 | |
| 559 | $return = array(); |
| 560 | if ( count( $values ) === 4 ) { |
| 561 | for ( $i = 0; $i < 4; $i++ ) { |
| 562 | $return[ $shorthands[ $property ][ $i ] ] = $values[ $i ] . $important; |
| 563 | } |
| 564 | } elseif ( count( $values ) === 3 ) { |
| 565 | $return[ $shorthands[ $property ][0] ] = $values[0] . $important; |
| 566 | $return[ $shorthands[ $property ][1] ] = $values[1] . $important; |
| 567 | $return[ $shorthands[ $property ][3] ] = $values[1] . $important; |
| 568 | $return[ $shorthands[ $property ][2] ] = $values[2] . $important; |
| 569 | } elseif ( count( $values ) === 2 ) { |
| 570 | for ( $i = 0; $i < 4; $i++ ) { |
| 571 | $return[ $shorthands[ $property ][ $i ] ] = ( ( $i % 2 !== 0 ) ) ? $values[1] . $important : $values[0] . $important; |
| 572 | } |
| 573 | } else { |
| 574 | for ( $i = 0; $i < 4; $i++ ) { |
| 575 | $return[ $shorthands[ $property ][ $i ] ] = $values[0] . $important; |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | return $return; |
| 580 | } |
| 581 | |
| 582 | /** |
| 583 | * Explodes a string as explode() does, however, not if $sep is escaped or within a string. |
| 584 | * |
| 585 | * @param string $sep - seperator. |
| 586 | * @param string $string - the string. |
| 587 | * @return array |
| 588 | * @version 1.0 |
| 589 | */ |
| 590 | public static function explode_ws( $sep, $string ) { |
| 591 | $status = 'st'; |
| 592 | $to = ''; |
| 593 | |
| 594 | $output = array(); |
| 595 | $num = 0; |
| 596 | for ( $i = 0, $len = strlen( $string ); $i < $len; $i++ ) { |
| 597 | switch ( $status ) { |
| 598 | case 'st': |
| 599 | if ( $string[ $i ] === $sep && ! csstidy::escaped( $string, $i ) ) { |
| 600 | ++$num; |
| 601 | } elseif ( $string[ $i ] === '"' || $string[ $i ] === '\'' || $string[ $i ] === '(' && ! csstidy::escaped( $string, $i ) ) { |
| 602 | $status = 'str'; |
| 603 | $to = ( $string[ $i ] === '(' ) ? ')' : $string[ $i ]; |
| 604 | ( isset( $output[ $num ] ) ) ? $output[ $num ] .= $string[ $i ] : $output[ $num ] = $string[ $i ]; |
| 605 | } else { |
| 606 | ( isset( $output[ $num ] ) ) ? $output[ $num ] .= $string[ $i ] : $output[ $num ] = $string[ $i ]; |
| 607 | } |
| 608 | break; |
| 609 | |
| 610 | case 'str': |
| 611 | if ( $string[ $i ] === $to && ! csstidy::escaped( $string, $i ) ) { |
| 612 | $status = 'st'; |
| 613 | } |
| 614 | ( isset( $output[ $num ] ) ) ? $output[ $num ] .= $string[ $i ] : $output[ $num ] = $string[ $i ]; |
| 615 | break; |
| 616 | } |
| 617 | } |
| 618 | |
| 619 | if ( isset( $output[0] ) ) { |
| 620 | return $output; |
| 621 | } else { |
| 622 | return array( $output ); |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * Merges Shorthand properties again, the opposite of dissolve_4value_shorthands() |
| 628 | * |
| 629 | * @param array $array - the property array. |
| 630 | * @return array |
| 631 | * @version 1.2 |
| 632 | * @see dissolve_4value_shorthands() |
| 633 | */ |
| 634 | public static function merge_4value_shorthands( $array ) { |
| 635 | $return = $array; |
| 636 | $shorthands = & $GLOBALS['csstidy']['shorthands']; |
| 637 | |
| 638 | foreach ( $shorthands as $key => $value ) { |
| 639 | if ( isset( $array[ $value[0] ] ) && isset( $array[ $value[1] ] ) |
| 640 | && isset( $array[ $value[2] ] ) && isset( $array[ $value[3] ] ) && $value !== 0 ) { |
| 641 | $return[ $key ] = ''; |
| 642 | |
| 643 | $important = ''; |
| 644 | for ( $i = 0; $i < 4; $i++ ) { |
| 645 | $val = $array[ $value[ $i ] ]; |
| 646 | if ( csstidy::is_important( $val ) ) { |
| 647 | $important = '!important'; |
| 648 | $return[ $key ] .= csstidy::gvw_important( $val ) . ' '; |
| 649 | } else { |
| 650 | $return[ $key ] .= $val . ' '; |
| 651 | } |
| 652 | unset( $return[ $value[ $i ] ] ); |
| 653 | } |
| 654 | $return[ $key ] = self::shorthand( trim( $return[ $key ] . $important ) ); |
| 655 | } |
| 656 | } |
| 657 | return $return; |
| 658 | } |
| 659 | |
| 660 | /** |
| 661 | * Dissolve background property |
| 662 | * |
| 663 | * @param string $str_value - the string value. |
| 664 | * @return array |
| 665 | * @version 1.0 |
| 666 | * @see merge_bg() |
| 667 | * @todo full CSS 3 compliance |
| 668 | */ |
| 669 | public static function dissolve_short_bg( $str_value ) { |
| 670 | $have = array(); |
| 671 | // don't try to explose background gradient ! |
| 672 | if ( stripos( $str_value, 'gradient(' ) !== false ) { |
| 673 | return array( 'background' => $str_value ); |
| 674 | } |
| 675 | |
| 676 | $background_prop_default = & $GLOBALS['csstidy']['background_prop_default']; |
| 677 | $repeat = array( 'repeat', 'repeat-x', 'repeat-y', 'no-repeat', 'space' ); |
| 678 | $attachment = array( 'scroll', 'fixed', 'local' ); |
| 679 | $clip = array( 'border', 'padding' ); |
| 680 | $origin = array( 'border', 'padding', 'content' ); |
| 681 | $pos = array( 'top', 'center', 'bottom', 'left', 'right' ); |
| 682 | $important = ''; |
| 683 | $return = array( |
| 684 | 'background-image' => null, |
| 685 | 'background-size' => null, |
| 686 | 'background-repeat' => null, |
| 687 | 'background-position' => null, |
| 688 | 'background-attachment' => null, |
| 689 | 'background-clip' => null, |
| 690 | 'background-origin' => null, |
| 691 | 'background-color' => null, |
| 692 | ); |
| 693 | |
| 694 | if ( csstidy::is_important( $str_value ) ) { |
| 695 | $important = ' !important'; |
| 696 | $str_value = csstidy::gvw_important( $str_value ); |
| 697 | } |
| 698 | |
| 699 | $str_value = self::explode_ws( ',', $str_value ); |
| 700 | for ( $i = 0, $l = count( $str_value ); $i < $l; $i++ ) { |
| 701 | $have['clip'] = false; |
| 702 | $have['pos'] = false; |
| 703 | $have['color'] = false; |
| 704 | $have['bg'] = false; |
| 705 | |
| 706 | if ( is_array( $str_value[ $i ] ) ) { |
| 707 | $str_value[ $i ] = $str_value[ $i ][0]; |
| 708 | } |
| 709 | $str_value[ $i ] = self::explode_ws( ' ', trim( $str_value[ $i ] ) ); |
| 710 | |
| 711 | for ( $j = 0, $k = count( $str_value[ $i ] ); $j < $k; $j++ ) { |
| 712 | if ( $have['bg'] === false && ( substr( $str_value[ $i ][ $j ], 0, 4 ) === 'url(' || $str_value[ $i ][ $j ] === 'none' ) ) { |
| 713 | $return['background-image'] .= $str_value[ $i ][ $j ] . ','; |
| 714 | $have['bg'] = true; |
| 715 | } elseif ( in_array( $str_value[ $i ][ $j ], $repeat, true ) ) { |
| 716 | $return['background-repeat'] .= $str_value[ $i ][ $j ] . ','; |
| 717 | } elseif ( in_array( $str_value[ $i ][ $j ], $attachment, true ) ) { |
| 718 | $return['background-attachment'] .= $str_value[ $i ][ $j ] . ','; |
| 719 | } elseif ( in_array( $str_value[ $i ][ $j ], $clip, true ) && ! $have['clip'] ) { |
| 720 | $return['background-clip'] .= $str_value[ $i ][ $j ] . ','; |
| 721 | $have['clip'] = true; |
| 722 | } elseif ( in_array( $str_value[ $i ][ $j ], $origin, true ) ) { |
| 723 | $return['background-origin'] .= $str_value[ $i ][ $j ] . ','; |
| 724 | } elseif ( $str_value[ $i ][ $j ][0] === '(' ) { |
| 725 | $return['background-size'] .= substr( $str_value[ $i ][ $j ], 1, -1 ) . ','; |
| 726 | } elseif ( in_array( $str_value[ $i ][ $j ], $pos, true ) || is_numeric( $str_value[ $i ][ $j ][0] ) || $str_value[ $i ][ $j ][0] === null || $str_value[ $i ][ $j ][0] === '-' || $str_value[ $i ][ $j ][0] === '.' ) { |
| 727 | $return['background-position'] .= $str_value[ $i ][ $j ]; |
| 728 | if ( ! $have['pos'] ) { |
| 729 | $return['background-position'] .= ' '; |
| 730 | } else { |
| 731 | $return['background-position'] .= ','; |
| 732 | } |
| 733 | $have['pos'] = true; |
| 734 | } elseif ( ! $have['color'] ) { |
| 735 | $return['background-color'] .= $str_value[ $i ][ $j ] . ','; |
| 736 | $have['color'] = true; |
| 737 | } |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | foreach ( $background_prop_default as $bg_prop => $default_value ) { |
| 742 | if ( $return[ $bg_prop ] !== null ) { |
| 743 | $return[ $bg_prop ] = substr( $return[ $bg_prop ], 0, -1 ) . $important; |
| 744 | } else { |
| 745 | $return[ $bg_prop ] = $default_value . $important; |
| 746 | } |
| 747 | } |
| 748 | return $return; |
| 749 | } |
| 750 | |
| 751 | /** |
| 752 | * Merges all background properties |
| 753 | * |
| 754 | * @param array $input_css - inputted CSS. |
| 755 | * @return array |
| 756 | * @version 1.0 |
| 757 | * @see dissolve_short_bg() |
| 758 | * @todo full CSS 3 compliance |
| 759 | */ |
| 760 | public static function merge_bg( $input_css ) { |
| 761 | $background_prop_default = & $GLOBALS['csstidy']['background_prop_default']; |
| 762 | // Max number of background images. CSS3 not yet fully implemented. |
| 763 | $number_of_values = @max( count( self::explode_ws( ',', $input_css['background-image'] ) ), count( self::explode_ws( ',', $input_css['background-color'] ) ), 1 ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
| 764 | // Array with background images to check if BG image exists. |
| 765 | $bg_img_array = @self::explode_ws( ',', csstidy::gvw_important( $input_css['background-image'] ) ); // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged |
| 766 | $new_bg_value = ''; |
| 767 | $important = ''; |
| 768 | |
| 769 | // if background properties is here and not empty, don't try anything. |
| 770 | if ( isset( $input_css['background'] ) && $input_css['background'] ) { |
| 771 | return $input_css; |
| 772 | } |
| 773 | |
| 774 | for ( $i = 0; $i < $number_of_values; $i++ ) { |
| 775 | foreach ( $background_prop_default as $bg_property => $default_value ) { |
| 776 | // Skip if property does not exist |
| 777 | if ( ! isset( $input_css[ $bg_property ] ) ) { |
| 778 | continue; |
| 779 | } |
| 780 | |
| 781 | $cur_value = $input_css[ $bg_property ]; |
| 782 | // skip all optimisation if gradient() somewhere. |
| 783 | if ( stripos( $cur_value, 'gradient(' ) !== false ) { |
| 784 | return $input_css; |
| 785 | } |
| 786 | |
| 787 | // Skip some properties if there is no background image. |
| 788 | if ( ( ! isset( $bg_img_array[ $i ] ) || $bg_img_array[ $i ] === 'none' ) |
| 789 | && ( $bg_property === 'background-size' || $bg_property === 'background-position' |
| 790 | || $bg_property === 'background-attachment' || $bg_property === 'background-repeat' ) ) { |
| 791 | continue; |
| 792 | } |
| 793 | |
| 794 | // Remove !important. |
| 795 | if ( csstidy::is_important( $cur_value ) ) { |
| 796 | $important = ' !important'; |
| 797 | $cur_value = csstidy::gvw_important( $cur_value ); |
| 798 | } |
| 799 | |
| 800 | // Do not add default values. |
| 801 | if ( $cur_value === $default_value ) { |
| 802 | continue; |
| 803 | } |
| 804 | |
| 805 | $temp = self::explode_ws( ',', $cur_value ); |
| 806 | |
| 807 | if ( isset( $temp[ $i ] ) ) { |
| 808 | if ( $bg_property === 'background-size' ) { |
| 809 | $new_bg_value .= '(' . $temp[ $i ] . ') '; |
| 810 | } else { |
| 811 | $new_bg_value .= $temp[ $i ] . ' '; |
| 812 | } |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | $new_bg_value = trim( $new_bg_value ); |
| 817 | if ( $i !== $number_of_values - 1 ) { |
| 818 | $new_bg_value .= ','; |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | // Delete all background-properties. |
| 823 | foreach ( $background_prop_default as $bg_property => $default_value ) { |
| 824 | unset( $input_css[ $bg_property ] ); |
| 825 | } |
| 826 | |
| 827 | // Add new background property. |
| 828 | if ( $new_bg_value !== '' ) { |
| 829 | $input_css['background'] = $new_bg_value . $important; |
| 830 | } elseif ( isset( $input_css['background'] ) ) { |
| 831 | $input_css['background'] = 'none'; |
| 832 | } |
| 833 | |
| 834 | return $input_css; |
| 835 | } |
| 836 | |
| 837 | /** |
| 838 | * Dissolve font property |
| 839 | * |
| 840 | * @param string $str_value - the string value. |
| 841 | * @return array |
| 842 | * @version 1.3 |
| 843 | * @see merge_font() |
| 844 | */ |
| 845 | public static function dissolve_short_font( $str_value ) { |
| 846 | $have = array(); |
| 847 | $font_prop_default = & $GLOBALS['csstidy']['font_prop_default']; |
| 848 | $font_weight = array( 'normal', 'bold', 'bolder', 'lighter', '100', '200', '300', '400', '500', '600', '700', '800', '900' ); |
| 849 | $font_variant = array( 'normal', 'small-caps' ); |
| 850 | $font_style = array( 'normal', 'italic', 'oblique' ); |
| 851 | $important = ''; |
| 852 | $return = array( |
| 853 | 'font-style' => null, |
| 854 | 'font-variant' => null, |
| 855 | 'font-weight' => null, |
| 856 | 'font-size' => null, |
| 857 | 'line-height' => null, |
| 858 | 'font-family' => null, |
| 859 | ); |
| 860 | |
| 861 | if ( csstidy::is_important( $str_value ) ) { |
| 862 | $important = '!important'; |
| 863 | $str_value = csstidy::gvw_important( $str_value ); |
| 864 | } |
| 865 | |
| 866 | $have['style'] = false; |
| 867 | $have['variant'] = false; |
| 868 | $have['weight'] = false; |
| 869 | $have['size'] = false; |
| 870 | // Detects if font-family consists of several words w/o quotes. |
| 871 | $multiwords = false; |
| 872 | |
| 873 | // Workaround with multiple font-family. |
| 874 | $str_value = self::explode_ws( ',', trim( $str_value ) ); |
| 875 | |
| 876 | $str_value[0] = self::explode_ws( ' ', trim( $str_value[0] ) ); |
| 877 | |
| 878 | for ( $j = 0, $k = count( $str_value[0] ); $j < $k; $j++ ) { |
| 879 | if ( $have['weight'] === false && in_array( $str_value[0][ $j ], $font_weight, true ) ) { |
| 880 | $return['font-weight'] = $str_value[0][ $j ]; |
| 881 | $have['weight'] = true; |
| 882 | } elseif ( $have['variant'] === false && in_array( $str_value[0][ $j ], $font_variant, true ) ) { |
| 883 | $return['font-variant'] = $str_value[0][ $j ]; |
| 884 | $have['variant'] = true; |
| 885 | } elseif ( $have['style'] === false && in_array( $str_value[0][ $j ], $font_style, true ) ) { |
| 886 | $return['font-style'] = $str_value[0][ $j ]; |
| 887 | $have['style'] = true; |
| 888 | } elseif ( $have['size'] === false && ( is_numeric( $str_value[0][ $j ][0] ) || $str_value[0][ $j ][0] === null || $str_value[0][ $j ][0] === '.' ) ) { |
| 889 | $size = self::explode_ws( '/', trim( $str_value[0][ $j ] ) ); |
| 890 | $return['font-size'] = $size[0]; |
| 891 | if ( isset( $size[1] ) ) { |
| 892 | $return['line-height'] = $size[1]; |
| 893 | } else { |
| 894 | $return['line-height'] = ''; // don't add 'normal' ! |
| 895 | } |
| 896 | $have['size'] = true; |
| 897 | } elseif ( isset( $return['font-family'] ) ) { |
| 898 | $return['font-family'] .= ' ' . $str_value[0][ $j ]; |
| 899 | $multiwords = true; |
| 900 | } else { |
| 901 | $return['font-family'] = $str_value[0][ $j ]; |
| 902 | } |
| 903 | } |
| 904 | // add quotes if we have several qords in font-family. |
| 905 | if ( $multiwords !== false ) { |
| 906 | $return['font-family'] = '"' . $return['font-family'] . '"'; |
| 907 | } |
| 908 | $i = 1; |
| 909 | while ( isset( $str_value[ $i ] ) ) { |
| 910 | $return['font-family'] .= ',' . trim( $str_value[ $i ] ); |
| 911 | ++$i; |
| 912 | } |
| 913 | |
| 914 | // Fix for 100 and more font-size. |
| 915 | if ( $have['size'] === false && isset( $return['font-weight'] ) && |
| 916 | is_numeric( $return['font-weight'][0] ) |
| 917 | ) { |
| 918 | $return['font-size'] = $return['font-weight']; |
| 919 | unset( $return['font-weight'] ); |
| 920 | } |
| 921 | |
| 922 | foreach ( $font_prop_default as $font_prop => $default_value ) { |
| 923 | if ( $return[ $font_prop ] !== null ) { |
| 924 | $return[ $font_prop ] = $return[ $font_prop ] . $important; |
| 925 | } else { |
| 926 | $return[ $font_prop ] = $default_value . $important; |
| 927 | } |
| 928 | } |
| 929 | return $return; |
| 930 | } |
| 931 | |
| 932 | /** |
| 933 | * Merges all fonts properties |
| 934 | * |
| 935 | * @param array $input_css - input CSS. |
| 936 | * @return array |
| 937 | * @version 1.3 |
| 938 | * @see dissolve_short_font() |
| 939 | */ |
| 940 | public static function merge_font( $input_css ) { |
| 941 | $font_prop_default = & $GLOBALS['csstidy']['font_prop_default']; |
| 942 | $new_font_value = ''; |
| 943 | $important = ''; |
| 944 | // Skip if not font-family and font-size set. |
| 945 | if ( isset( $input_css['font-family'] ) && isset( $input_css['font-size'] ) ) { |
| 946 | // fix several words in font-family - add quotes. |
| 947 | if ( isset( $input_css['font-family'] ) ) { |
| 948 | $families = explode( ',', $input_css['font-family'] ); |
| 949 | $result_families = array(); |
| 950 | foreach ( $families as $family ) { |
| 951 | $family = trim( $family ); |
| 952 | $len = strlen( $family ); |
| 953 | if ( strpos( $family, ' ' ) && |
| 954 | ! ( ( $family[0] === '"' && $family[ $len - 1 ] === '"' ) || |
| 955 | ( $family[0] === "'" && $family[ $len - 1 ] === "'" ) ) ) { |
| 956 | $family = '"' . $family . '"'; |
| 957 | } |
| 958 | $result_families[] = $family; |
| 959 | } |
| 960 | $input_css['font-family'] = implode( ',', $result_families ); |
| 961 | } |
| 962 | foreach ( $font_prop_default as $font_property => $default_value ) { |
| 963 | |
| 964 | // Skip if property does not exist. |
| 965 | if ( ! isset( $input_css[ $font_property ] ) ) { |
| 966 | continue; |
| 967 | } |
| 968 | |
| 969 | $cur_value = $input_css[ $font_property ]; |
| 970 | |
| 971 | // Skip if default value is used. |
| 972 | if ( $cur_value === $default_value ) { |
| 973 | continue; |
| 974 | } |
| 975 | |
| 976 | // Remove !important. |
| 977 | if ( csstidy::is_important( $cur_value ) ) { |
| 978 | $important = '!important'; |
| 979 | $cur_value = csstidy::gvw_important( $cur_value ); |
| 980 | } |
| 981 | |
| 982 | $new_font_value .= $cur_value; |
| 983 | // Add delimiter. |
| 984 | $new_font_value .= ( $font_property === 'font-size' && |
| 985 | isset( $input_css['line-height'] ) ) ? '/' : ' '; |
| 986 | } |
| 987 | |
| 988 | $new_font_value = trim( $new_font_value ); |
| 989 | |
| 990 | // Delete all font-properties. |
| 991 | foreach ( $font_prop_default as $font_property => $default_value ) { |
| 992 | if ( $font_property !== 'font' || ! $new_font_value ) { |
| 993 | unset( $input_css[ $font_property ] ); |
| 994 | } |
| 995 | } |
| 996 | |
| 997 | // Add new font property. |
| 998 | if ( $new_font_value !== '' ) { |
| 999 | $input_css['font'] = $new_font_value . $important; |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | return $input_css; |
| 1004 | } |
| 1005 | |
| 1006 | } |
| 1007 |