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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * VuFind Theme Public Resource Handler (for CSS, JS, etc.) |
| 5 | * |
| 6 | * PHP version 8 |
| 7 | * |
| 8 | * Copyright (C) Villanova University 2010. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2, |
| 12 | * as published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | * |
| 23 | * @category VuFind |
| 24 | * @package Theme |
| 25 | * @author Demian Katz <demian.katz@villanova.edu> |
| 26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
| 27 | * @link https://vufind.org Main Site |
| 28 | */ |
| 29 | |
| 30 | namespace VuFindTheme; |
| 31 | |
| 32 | use function count; |
| 33 | use function in_array; |
| 34 | use function is_array; |
| 35 | |
| 36 | /** |
| 37 | * VuFind Theme Public Resource Handler (for CSS, JS, etc.) |
| 38 | * |
| 39 | * @category VuFind |
| 40 | * @package Theme |
| 41 | * @author Demian Katz <demian.katz@villanova.edu> |
| 42 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
| 43 | * @link https://vufind.org Main Site |
| 44 | */ |
| 45 | class ResourceContainer |
| 46 | { |
| 47 | use \VuFind\Log\VarDumperTrait; |
| 48 | |
| 49 | /** |
| 50 | * Less CSS files |
| 51 | * |
| 52 | * @var array |
| 53 | */ |
| 54 | protected $less = []; |
| 55 | |
| 56 | /** |
| 57 | * CSS files |
| 58 | * |
| 59 | * @var array |
| 60 | */ |
| 61 | protected $css = []; |
| 62 | |
| 63 | /** |
| 64 | * Javascript files |
| 65 | * |
| 66 | * @var array |
| 67 | */ |
| 68 | protected $js = []; |
| 69 | |
| 70 | /** |
| 71 | * Favicon |
| 72 | * |
| 73 | * @var string|array|null |
| 74 | */ |
| 75 | protected $favicon = null; |
| 76 | |
| 77 | /** |
| 78 | * Encoding type |
| 79 | * |
| 80 | * @var string |
| 81 | */ |
| 82 | protected $encoding = 'UTF-8'; |
| 83 | |
| 84 | /** |
| 85 | * Generator value for <meta> tag |
| 86 | * |
| 87 | * @var string |
| 88 | */ |
| 89 | protected $generator = ''; |
| 90 | |
| 91 | /** |
| 92 | * Add a CSS file. |
| 93 | * |
| 94 | * @param array|string $css CSS file (or array of CSS files) to add (possibly |
| 95 | * with extra settings from theme config appended to each filename string). |
| 96 | * |
| 97 | * @return void |
| 98 | */ |
| 99 | public function addCss($css) |
| 100 | { |
| 101 | if (!is_array($css) && !is_a($css, 'Traversable')) { |
| 102 | $css = [$css]; |
| 103 | } |
| 104 | foreach ($css as $current) { |
| 105 | if (!$this->dynamicallyParsed($current)) { |
| 106 | $this->css[] = $current; |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Add a Javascript file. |
| 113 | * |
| 114 | * @param array|string $js Javascript file (or array of files) to add (possibly |
| 115 | * with extra settings from theme config appended to each filename string). |
| 116 | * |
| 117 | * @return void |
| 118 | */ |
| 119 | public function addJs($js) |
| 120 | { |
| 121 | if ((!is_array($js) && !is_a($js, 'Traversable')) || isset($js['file'])) { |
| 122 | $this->addJsEntry($js); |
| 123 | } elseif (isset($js[0])) { |
| 124 | foreach ($js as $current) { |
| 125 | $this->addJsEntry($current); |
| 126 | } |
| 127 | } elseif ($js === []) { |
| 128 | return; |
| 129 | } else { |
| 130 | throw new \Exception('Invalid JS entry format: ' . $this->varDump($js)); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Helper function for adding a Javascript file. |
| 136 | * |
| 137 | * @param string|array $jsEntry Entry to add, either as string with path |
| 138 | * or array with additional properties. |
| 139 | * |
| 140 | * @return void |
| 141 | */ |
| 142 | protected function addJsEntry($jsEntry) |
| 143 | { |
| 144 | if (!is_array($jsEntry)) { |
| 145 | $this->addJsStringEntry($jsEntry); |
| 146 | } else { |
| 147 | $this->addJsArrayEntry($jsEntry); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Helper function for adding a Javascript file which is described as string. |
| 153 | * |
| 154 | * @param string $jsEntry Entry to add as string. |
| 155 | * |
| 156 | * @return void |
| 157 | */ |
| 158 | protected function addJsStringEntry($jsEntry) |
| 159 | { |
| 160 | $parts = $this->parseSetting($jsEntry); |
| 161 | if (count($parts) == 1) { |
| 162 | $jsEntry = ['file' => $jsEntry]; |
| 163 | } else { |
| 164 | $jsEntry = [ |
| 165 | 'file' => $parts[0], |
| 166 | 'attributes' => ['conditional' => trim($parts[1])], |
| 167 | ]; |
| 168 | } |
| 169 | $this->addJsArrayEntry($jsEntry); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Helper function for adding a Javascript file which is described as array. |
| 174 | * |
| 175 | * @param string $jsEntry Entry to add as string. |
| 176 | * |
| 177 | * @return void |
| 178 | */ |
| 179 | protected function addJsArrayEntry($jsEntry) |
| 180 | { |
| 181 | if (!isset($jsEntry['position'])) { |
| 182 | $jsEntry['position'] = 'header'; |
| 183 | } |
| 184 | |
| 185 | if (isset($jsEntry['priority']) && isset($jsEntry['load_after'])) { |
| 186 | throw new \Exception( |
| 187 | 'Using "priority" as well as "load_after" in the same entry ' |
| 188 | . 'is not supported: "' . $jsEntry['file'] . '"' |
| 189 | ); |
| 190 | } |
| 191 | |
| 192 | // If we are disabling the dependency, remove it now. |
| 193 | if ($jsEntry['disabled'] ?? false) { |
| 194 | $this->removeEntry($jsEntry, $this->js); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | foreach ($this->js as $existingEntry) { |
| 199 | if ($existingEntry['file'] == $jsEntry['file']) { |
| 200 | // If we have the same settings as before, just skip this entry. |
| 201 | if ($existingEntry == $jsEntry) { |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | throw new \Exception( |
| 206 | 'Overriding an existing dependency is not supported: ' |
| 207 | . '"' . $jsEntry['file'] . '"' |
| 208 | ); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | $this->insertEntry($jsEntry, $this->js); |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Helper function to remove an entry from an array based on filename. |
| 217 | * |
| 218 | * @param array $entry The entry to remove. |
| 219 | * @param array $array The array from which the entry shall be removed. |
| 220 | * |
| 221 | * @return void |
| 222 | */ |
| 223 | protected function removeEntry($entry, &$array) |
| 224 | { |
| 225 | foreach (array_keys($array) as $i) { |
| 226 | if (($array[$i]['file'] ?? '') === ($entry['file'] ?? null)) { |
| 227 | unset($array[$i]); |
| 228 | return; |
| 229 | } |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Helper function to insert an entry to an array, |
| 235 | * also considering priority and dependency, if existing. |
| 236 | * |
| 237 | * @param array $entry The entry to insert. |
| 238 | * @param array $array The array into which the entry shall be inserted. |
| 239 | * |
| 240 | * @return void |
| 241 | */ |
| 242 | protected function insertEntry($entry, &$array) |
| 243 | { |
| 244 | if (isset($entry['priority']) || isset($entry['load_after'])) { |
| 245 | foreach (array_keys($array) as $i) { |
| 246 | if (isset($entry['priority'])) { |
| 247 | $currentPriority = $array[$i]['priority'] ?? null; |
| 248 | if ( |
| 249 | !isset($currentPriority) |
| 250 | || $currentPriority > $entry['priority'] |
| 251 | ) { |
| 252 | array_splice($array, $i, 0, [$entry]); |
| 253 | return; |
| 254 | } |
| 255 | } elseif (isset($entry['load_after'])) { |
| 256 | if ($entry['load_after'] === $array[$i]['file']) { |
| 257 | array_splice($array, $i + 1, 0, [$entry]); |
| 258 | return; |
| 259 | } |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | if (isset($entry['load_after'])) { |
| 264 | throw new \Exception( |
| 265 | 'Dependency not found: ' . $entry['load_after'] |
| 266 | ); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | // Insert at end if either no priority/dependency is given |
| 271 | // or no other element has been found |
| 272 | $array[] = $entry; |
| 273 | } |
| 274 | |
| 275 | /** |
| 276 | * Get CSS files. |
| 277 | * |
| 278 | * @return array |
| 279 | */ |
| 280 | public function getCss() |
| 281 | { |
| 282 | return array_unique($this->css); |
| 283 | } |
| 284 | |
| 285 | /** |
| 286 | * Get Javascript files. |
| 287 | * |
| 288 | * @param string $position Position where the files should be inserted |
| 289 | * (allowed values are 'header' or 'footer'). |
| 290 | * |
| 291 | * @return array |
| 292 | */ |
| 293 | public function getJs(string $position = null) |
| 294 | { |
| 295 | if (!isset($position)) { |
| 296 | return $this->js; |
| 297 | } else { |
| 298 | return array_filter( |
| 299 | $this->js, |
| 300 | function ($jsFile) use ($position) { |
| 301 | return $jsFile['position'] == $position; |
| 302 | } |
| 303 | ); |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Given a colon-delimited configuration string, break it apart, making sure |
| 309 | * that URLs in the first position are not inappropriately split. |
| 310 | * |
| 311 | * @param string $current Setting to parse |
| 312 | * |
| 313 | * @return array |
| 314 | */ |
| 315 | public function parseSetting($current) |
| 316 | { |
| 317 | // TODO: replace this method with a deprecation warning when all configs |
| 318 | // have been converted to arrays |
| 319 | $parts = explode(':', $current); |
| 320 | // Special case: don't explode URLs: |
| 321 | if ( |
| 322 | ($parts[0] === 'http' || $parts[0] === 'https') |
| 323 | && str_starts_with($parts[1], '//') |
| 324 | ) { |
| 325 | $protocol = array_shift($parts); |
| 326 | $parts[0] = $protocol . ':' . $parts[0]; |
| 327 | } |
| 328 | return $parts; |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * Set the encoding. |
| 333 | * |
| 334 | * @param string $e New encoding |
| 335 | * |
| 336 | * @return void |
| 337 | */ |
| 338 | public function setEncoding($e) |
| 339 | { |
| 340 | $this->encoding = $e; |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Get the encoding. |
| 345 | * |
| 346 | * @return void |
| 347 | */ |
| 348 | public function getEncoding() |
| 349 | { |
| 350 | return $this->encoding; |
| 351 | } |
| 352 | |
| 353 | /** |
| 354 | * Set the favicon. |
| 355 | * |
| 356 | * @param string|array $favicon New favicon path. |
| 357 | * |
| 358 | * @return void |
| 359 | */ |
| 360 | public function setFavicon($favicon) |
| 361 | { |
| 362 | $this->favicon = $favicon; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Get the favicon (null for none). |
| 367 | * |
| 368 | * @return string|array|null |
| 369 | */ |
| 370 | public function getFavicon() |
| 371 | { |
| 372 | return $this->favicon; |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Set the generator. |
| 377 | * |
| 378 | * @param string $generator New generator. |
| 379 | * |
| 380 | * @return void |
| 381 | */ |
| 382 | public function setGenerator($generator) |
| 383 | { |
| 384 | $this->generator = $generator; |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * Get the generator. |
| 389 | * |
| 390 | * @return string |
| 391 | */ |
| 392 | public function getGenerator() |
| 393 | { |
| 394 | return $this->generator; |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * Check if a CSS file is being dynamically compiled in LESS |
| 399 | * |
| 400 | * @param string $file Filename to check |
| 401 | * |
| 402 | * @return bool |
| 403 | */ |
| 404 | protected function dynamicallyParsed($file) |
| 405 | { |
| 406 | if (empty($this->less)) { |
| 407 | return false; |
| 408 | } |
| 409 | [$fileName, ] = explode('.', $file); |
| 410 | $lessFile = $fileName . '.less'; |
| 411 | return in_array($lessFile, $this->less, true); |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * Remove a CSS file if it matches another file's name |
| 416 | * |
| 417 | * @param string $file Filename to remove |
| 418 | * |
| 419 | * @return void |
| 420 | */ |
| 421 | protected function removeCSS($file) |
| 422 | { |
| 423 | [$name, ] = explode('.', $file); |
| 424 | $name .= '.css'; |
| 425 | $index = array_search($name, $this->css); |
| 426 | if (false !== $index) { |
| 427 | unset($this->css[$index]); |
| 428 | } |
| 429 | } |
| 430 | } |