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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\WikiSEO\Api; |
| 4 | |
| 5 | use ApiMain; |
| 6 | use Config; |
| 7 | use Exception; |
| 8 | use FauxRequest; |
| 9 | use File; |
| 10 | use Imagick; |
| 11 | use ImagickDraw; |
| 12 | use ImagickDrawException; |
| 13 | use ImagickException; |
| 14 | use ImagickPixel; |
| 15 | use ImagickPixelException; |
| 16 | use MediaWiki\MediaWikiServices; |
| 17 | use MediaWiki\Rest\LocalizedHttpException; |
| 18 | use MediaWiki\Rest\Response; |
| 19 | use MediaWiki\Rest\SimpleHandler; |
| 20 | use MediaWiki\Rest\StringStream; |
| 21 | use MWException; |
| 22 | use Title; |
| 23 | use Wikimedia\Message\MessageValue; |
| 24 | use Wikimedia\ParamValidator\ParamValidator; |
| 25 | |
| 26 | class RestSocialMediaImage extends SimpleHandler { |
| 27 | |
| 28 | /** |
| 29 | * @var Config WikiSEO Config |
| 30 | */ |
| 31 | private Config $config; |
| 32 | |
| 33 | /** |
| 34 | * @var array |
| 35 | */ |
| 36 | private $supportedMimes = [ |
| 37 | 'image/png', |
| 38 | 'image/jpeg', |
| 39 | 'image/jpg', |
| 40 | 'image/gif', |
| 41 | 'image/webp' |
| 42 | ]; |
| 43 | |
| 44 | /** |
| 45 | * Generates the social media image based on the provided title and the title's page props |
| 46 | * |
| 47 | * @return Response |
| 48 | * @throws LocalizedHttpException |
| 49 | */ |
| 50 | public function run(): Response { |
| 51 | if ( !extension_loaded( 'Imagick' ) ) { |
| 52 | $this->makeError( 'wiki-seo-api-imagick-missing', 500 ); |
| 53 | } |
| 54 | |
| 55 | $params = $this->getValidatedParams(); |
| 56 | |
| 57 | $title = MediaWikiServices::getInstance()->getTitleFactory()->newFromText( urldecode( $params['title'] ) ); |
| 58 | |
| 59 | if ( $title === null ) { |
| 60 | $this->makeError( 'wiki-seo-api-title-empty', 400 ); |
| 61 | } |
| 62 | |
| 63 | $this->config = MediaWikiServices::getInstance()->getConfigFactory()->makeConfig( 'WikiSEO' ); |
| 64 | |
| 65 | if ( $this->config->get( 'WikiSeoEnableSocialImages' ) === false ) { |
| 66 | $this->makeError( 'wiki-seo-api-disabled', 503 ); |
| 67 | } |
| 68 | |
| 69 | try { |
| 70 | $out = $this->createImage( $this->createBackground( $title ), $title ); |
| 71 | } catch ( Exception $e ) { |
| 72 | $this->makeError( 'wiki-seo-api-image-error', 500 ); |
| 73 | } |
| 74 | |
| 75 | $response = $this->getResponseFactory()->create(); |
| 76 | $response->setHeader( 'Content-Type', 'image/jpeg' ); |
| 77 | |
| 78 | try { |
| 79 | $stream = new StringStream( $out->getImageBlob() ); |
| 80 | $response->setBody( $stream ); |
| 81 | } catch ( Exception $e ) { |
| 82 | $this->makeError( 'wiki-seo-api-image-error', 500 ); |
| 83 | } finally { |
| 84 | $out->clear(); |
| 85 | } |
| 86 | |
| 87 | return $response; |
| 88 | } |
| 89 | |
| 90 | /** @inheritDoc */ |
| 91 | public function getParamSettings(): array { |
| 92 | return [ |
| 93 | 'title' => [ |
| 94 | self::PARAM_SOURCE => 'path', |
| 95 | ParamValidator::PARAM_TYPE => 'string', |
| 96 | ParamValidator::PARAM_REQUIRED => true, |
| 97 | ], |
| 98 | 'background' => [ |
| 99 | self::PARAM_SOURCE => 'query', |
| 100 | ParamValidator::PARAM_TYPE => 'string', |
| 101 | ParamValidator::PARAM_REQUIRED => false, |
| 102 | ], |
| 103 | 'backgroundColor' => [ |
| 104 | self::PARAM_SOURCE => 'query', |
| 105 | ParamValidator::PARAM_TYPE => 'string', |
| 106 | ParamValidator::PARAM_REQUIRED => false, |
| 107 | ], |
| 108 | ]; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Creates the image background |
| 113 | * Either a local file, or a flat color provided by $wgWikiSeoSocialImageBackgroundColor |
| 114 | * |
| 115 | * @param Title $title |
| 116 | * @return Imagick|ImagickPixel|null |
| 117 | * @throws ImagickPixelException |
| 118 | */ |
| 119 | private function createBackground( Title $title ) { |
| 120 | $params = $this->getValidatedParams(); |
| 121 | $background = null; |
| 122 | |
| 123 | if ( isset( $params['background'] ) ) { |
| 124 | $props = [ |
| 125 | 'background' => $params['background'], |
| 126 | ]; |
| 127 | } else { |
| 128 | $props = MediaWikiServices::getInstance()->getPageProps()->getProperties( $title, 'page_image_free' ); |
| 129 | } |
| 130 | |
| 131 | if ( empty( $props ) && $title->getNamespace() === NS_FILE ) { |
| 132 | $props = [ |
| 133 | 'background' => $title->getText(), |
| 134 | ]; |
| 135 | } |
| 136 | |
| 137 | if ( !empty( $props ) ) { |
| 138 | $background = MediaWikiServices::getInstance()->getTitleFactory()->makeTitle( |
| 139 | NS_FILE, |
| 140 | array_pop( $props ) |
| 141 | ); |
| 142 | $file = MediaWikiServices::getInstance()->getRepoGroup()->findFile( $background ); |
| 143 | |
| 144 | if ( $file !== false && in_array( $file->getMimeType(), $this->supportedMimes, true ) ) { |
| 145 | $background = new Imagick(); |
| 146 | $thumb = $file->transform( |
| 147 | [ 'width' => (int)( $this->config->get( 'WikiSeoSocialImageWidth' ) / 2 ) ], |
| 148 | File::RENDER_NOW |
| 149 | ); |
| 150 | |
| 151 | if ( $thumb !== false ) { |
| 152 | try { |
| 153 | $background->readImage( $thumb->getLocalCopyPath() ); |
| 154 | } catch ( ImagickException $e ) { |
| 155 | $background = null; |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | if ( $background === null ) { |
| 162 | $background = new ImagickPixel( $this->config->get( 'WikiSeoSocialImageBackgroundColor' ) ); |
| 163 | |
| 164 | if ( isset( $params['backgroundColor'] ) ) { |
| 165 | $background = new ImagickPixel( $params['backgroundColor'] ); |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return $background; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Combines all parts into one image |
| 174 | * |
| 175 | * @param Imagick|ImagickPixel $background |
| 176 | * @param Title $title |
| 177 | * @return Imagick |
| 178 | * @throws ImagickDrawException |
| 179 | * @throws ImagickException|ImagickPixelException |
| 180 | */ |
| 181 | private function createImage( $background, Title $title ): Imagick { |
| 182 | $textColor = new ImagickPixel( $this->config->get( 'WikiSeoSocialImageTextColor' ) ); |
| 183 | |
| 184 | $imagick = $this->initImage( $background ); |
| 185 | |
| 186 | $this->addBackgroundImage( $imagick, $background ); |
| 187 | $this->darkenBackground( $imagick ); |
| 188 | |
| 189 | $this->addText( |
| 190 | $imagick, |
| 191 | $textColor, |
| 192 | $title |
| 193 | ); |
| 194 | |
| 195 | if ( $this->config->get( 'WikiSeoSocialImageShowLogo' ) ) { |
| 196 | $this->drawIcon( $imagick, $textColor ); |
| 197 | } |
| 198 | |
| 199 | $imagick->setImageFormat( 'jpg' ); |
| 200 | |
| 201 | return $imagick; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * @param string $message |
| 206 | * @param int $status |
| 207 | * @return never-return |
| 208 | * @throws LocalizedHttpException |
| 209 | */ |
| 210 | private function makeError( string $message, int $status ): void { |
| 211 | throw new LocalizedHttpException( new MessageValue( $message ), $status, [ |
| 212 | 'error' => 'parameter-validation-failed', |
| 213 | 'failureCode' => $status, |
| 214 | 'failureData' => $status < 500 ? 'Bad Request' : 'Server Error', |
| 215 | ] ); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Initialize the image object with the provided width, height, and background image/color |
| 220 | * |
| 221 | * @param mixed $background |
| 222 | * @return Imagick |
| 223 | * @throws ImagickException |
| 224 | */ |
| 225 | private function initImage( $background ): Imagick { |
| 226 | $imagick = new Imagick(); |
| 227 | |
| 228 | if ( get_class( $background ) !== ImagickPixel::class ) { |
| 229 | $background = 'none'; |
| 230 | } |
| 231 | |
| 232 | $imagick->newImage( |
| 233 | $this->config->get( 'WikiSeoSocialImageWidth' ), |
| 234 | $this->config->get( 'WikiSeoSocialImageHeight' ), |
| 235 | $background |
| 236 | ); |
| 237 | |
| 238 | return $imagick; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * If we are working with an image, resize the background image to the dimensions of the image |
| 243 | * |
| 244 | * @param Imagick $imagick |
| 245 | * @param Imagick|ImagickPixel $background |
| 246 | * @return void |
| 247 | * @throws ImagickException |
| 248 | */ |
| 249 | private function addBackgroundImage( Imagick $imagick, $background ): void { |
| 250 | if ( get_class( $background ) !== Imagick::class ) { |
| 251 | return; |
| 252 | } |
| 253 | |
| 254 | $background->resizeImage( |
| 255 | $this->config->get( 'WikiSeoSocialImageWidth' ), |
| 256 | 0, |
| 257 | Imagick::FILTER_CATROM, |
| 258 | 1 |
| 259 | ); |
| 260 | |
| 261 | if ( $background->getImageHeight() < $this->config->get( 'WikiSeoSocialImageHeight' ) ) { |
| 262 | $background->resizeImage( |
| 263 | 0, |
| 264 | $this->config->get( 'WikiSeoSocialImageHeight' ), |
| 265 | Imagick::FILTER_CATROM, |
| 266 | 1 |
| 267 | ); |
| 268 | } |
| 269 | |
| 270 | $imagick->compositeImage( $background, Imagick::COMPOSITE_OVER, 0, 0 ); |
| 271 | $background->clear(); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Add a dark-to-light gradient at the bottom, ensures readability |
| 276 | * |
| 277 | * @param Imagick $imagick |
| 278 | * @return void |
| 279 | * @throws ImagickException |
| 280 | */ |
| 281 | private function darkenBackground( Imagick $imagick ): void { |
| 282 | $overlay = new Imagick(); |
| 283 | $overlay->newPseudoImage( |
| 284 | $this->config->get( 'WikiSeoSocialImageWidth' ), |
| 285 | $this->config->get( 'WikiSeoSocialImageHeight' ) / 2, |
| 286 | 'gradient:rgba(0, 0, 0, 0)-rgba(0, 0, 0, 1)' |
| 287 | ); |
| 288 | |
| 289 | $imagick->compositeImage( |
| 290 | $overlay, |
| 291 | Imagick::COMPOSITE_OVER, |
| 292 | 0, |
| 293 | $this->config->get( 'WikiSeoSocialImageHeight' ) / 2 |
| 294 | ); |
| 295 | $overlay->clear(); |
| 296 | } |
| 297 | |
| 298 | /** |
| 299 | * Write the title, namespace, last modified date, and contributors to the image |
| 300 | * |
| 301 | * @param Imagick $imagick |
| 302 | * @param ImagickPixel $textColor |
| 303 | * @param Title $title |
| 304 | * @return void |
| 305 | * @throws ImagickDrawException |
| 306 | * @throws ImagickException |
| 307 | */ |
| 308 | private function addText( Imagick $imagick, ImagickPixel $textColor, Title $title ): void { |
| 309 | $width = $this->config->get( 'WikiSeoSocialImageWidth' ); |
| 310 | $height = $this->config->get( 'WikiSeoSocialImageHeight' ); |
| 311 | |
| 312 | $titleSize = 56; |
| 313 | $subtitleSize = 32; |
| 314 | $namespaceSize = 32; |
| 315 | $leftMargin = 62; |
| 316 | $bottomMargin = 62; |
| 317 | $ySpacing = 16; |
| 318 | |
| 319 | $materialIcons = new ImagickDraw(); |
| 320 | $materialIcons->setFillColor( $textColor ); |
| 321 | $materialIcons->setFont( 'extensions/WikiSEO/assets/fonts/MaterialIcons/MaterialIconsOutlined-Regular.otf' ); |
| 322 | $materialIcons->setFontSize( 32 ); |
| 323 | $materialIcons->setFillColor( new ImagickPixel( '#dddddd' ) ); |
| 324 | |
| 325 | $roboto = new ImagickDraw(); |
| 326 | $roboto->setFillColor( $textColor ); |
| 327 | $roboto->setFillColor( new ImagickPixel( '#dddddd' ) ); |
| 328 | |
| 329 | $rev = MediaWikiServices::getInstance()->getRevisionLookup()->getKnownCurrentRevision( $title ); |
| 330 | |
| 331 | // Last Modified |
| 332 | if ( is_object( $rev ) ) { |
| 333 | $imagick->annotateImage( |
| 334 | $materialIcons, |
| 335 | $leftMargin, |
| 336 | $height - ( $bottomMargin - 6 ), |
| 337 | 0, |
| 338 | $this->utf8( 0xe923 ) |
| 339 | ); |
| 340 | |
| 341 | $leftMargin += $imagick->queryFontMetrics( $materialIcons, $this->utf8( 0xe923 ) )['textWidth'] + 8; |
| 342 | |
| 343 | $roboto->setFont( 'extensions/WikiSEO/assets/fonts/Roboto/Roboto-Medium.ttf' ); |
| 344 | $roboto->setFontSize( $subtitleSize ); |
| 345 | |
| 346 | $timestamp = MediaWikiServices::getInstance()->getContentLanguage()->date( $rev->getTimestamp() ); |
| 347 | |
| 348 | $imagick->annotateImage( |
| 349 | $roboto, |
| 350 | $leftMargin, |
| 351 | $height - $bottomMargin, |
| 352 | 0, |
| 353 | $timestamp |
| 354 | ); |
| 355 | } |
| 356 | |
| 357 | // Contributors |
| 358 | $contributors = $this->getContributors( $title ); |
| 359 | |
| 360 | if ( !empty( $contributors ) ) { |
| 361 | $leftMargin += $imagick->queryFontMetrics( $roboto, $timestamp ?? '' )['textWidth'] + 40; |
| 362 | $imagick->annotateImage( |
| 363 | $materialIcons, |
| 364 | $leftMargin, |
| 365 | $height - ( $bottomMargin - 6 ), |
| 366 | 0, |
| 367 | $this->utf8( 0xe7fd ) |
| 368 | ); |
| 369 | |
| 370 | $leftMargin += $imagick->queryFontMetrics( $materialIcons, $this->utf8( 0xe7fd ) )['textWidth'] + 8; |
| 371 | |
| 372 | $contribsShow = array_splice( $contributors, 0, 2 ); |
| 373 | |
| 374 | $text = implode( ', ', $contribsShow ); |
| 375 | |
| 376 | if ( $imagick->queryFontMetrics( $roboto, $text )['textWidth'] > $width - 240 - $leftMargin ) { |
| 377 | $text = $contribsShow[0]; |
| 378 | $contributors[] = $contribsShow[1]; |
| 379 | } |
| 380 | |
| 381 | if ( count( $contributors ) > 0 ) { |
| 382 | $text .= ' +' . count( $contributors ); |
| 383 | } |
| 384 | |
| 385 | $roboto->setFontSize( $subtitleSize ); |
| 386 | $imagick->annotateImage( |
| 387 | $roboto, |
| 388 | $leftMargin, |
| 389 | $height - $bottomMargin, |
| 390 | 0, |
| 391 | $text |
| 392 | ); |
| 393 | } |
| 394 | |
| 395 | // Page Title |
| 396 | $leftMargin = 62; |
| 397 | $roboto->setFont( 'extensions/WikiSEO/assets/fonts/Roboto/Roboto-Medium.ttf' ); |
| 398 | $roboto->setFontSize( $titleSize ); |
| 399 | $roboto->setFillColor( $textColor ); |
| 400 | |
| 401 | [ $lines, $lineHeight ] = $this->wordWrapAnnotation( |
| 402 | $imagick, |
| 403 | $roboto, |
| 404 | $title->getText(), |
| 405 | $width - 240 |
| 406 | ); |
| 407 | |
| 408 | $lines = array_reverse( $lines ); |
| 409 | |
| 410 | foreach ( $lines as $i => $iValue ) { |
| 411 | $imagick->annotateImage( |
| 412 | $roboto, |
| 413 | $leftMargin, $height - $bottomMargin - $subtitleSize - $ySpacing - ( $i * $lineHeight ), 0, $iValue ); |
| 414 | } |
| 415 | |
| 416 | // Namespace |
| 417 | $roboto->setFont( 'extensions/WikiSEO/assets/fonts/Roboto/Roboto-Light.ttf' ); |
| 418 | $roboto->setFontSize( $namespaceSize ); |
| 419 | |
| 420 | $yOffset = ( ( count( $lines ) - 1 ) * $titleSize ) + $ySpacing; |
| 421 | |
| 422 | $imagick->annotateImage( |
| 423 | $roboto, |
| 424 | $leftMargin, |
| 425 | $height - $bottomMargin - $subtitleSize - $titleSize - $ySpacing - $yOffset + 4, |
| 426 | 0, |
| 427 | $title->getNsText() |
| 428 | ); |
| 429 | |
| 430 | $roboto->clear(); |
| 431 | $materialIcons->clear(); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Wraps overly long lines |
| 436 | * https://stackoverflow.com/a/28288589 |
| 437 | * |
| 438 | * @param Imagick $image |
| 439 | * @param ImagickDraw $draw |
| 440 | * @param string $text |
| 441 | * @param int $maxWidth |
| 442 | * @return array |
| 443 | * @throws ImagickException |
| 444 | */ |
| 445 | private function wordWrapAnnotation( Imagick $image, ImagickDraw $draw, string $text, int $maxWidth ): array { |
| 446 | $words = explode( " ", $text ); |
| 447 | $lines = []; |
| 448 | $i = 0; |
| 449 | $lineHeight = 0; |
| 450 | while ( $i < count( $words ) ) { |
| 451 | $currentLine = $words[$i]; |
| 452 | if ( $i + 1 >= count( $words ) ) { |
| 453 | $lines[] = $currentLine; |
| 454 | break; |
| 455 | } |
| 456 | |
| 457 | // Check to see if we can add another word to this line |
| 458 | $metrics = $image->queryFontMetrics( $draw, $currentLine . ' ' . $words[$i + 1] ); |
| 459 | while ( $metrics['textWidth'] <= $maxWidth ) { |
| 460 | // If so, do it and keep doing it! |
| 461 | $currentLine .= ' ' . $words[++$i]; |
| 462 | if ( $i + 1 >= count( $words ) ) { |
| 463 | break; |
| 464 | } |
| 465 | $metrics = $image->queryFontMetrics( $draw, $currentLine . ' ' . $words[$i + 1] ); |
| 466 | } |
| 467 | // We can't add the next word to this line, so loop to the next line |
| 468 | $lines[] = $currentLine; |
| 469 | $i++; |
| 470 | // Finally, update line height |
| 471 | if ( $metrics['textHeight'] > $lineHeight ) { |
| 472 | $lineHeight = $metrics['textHeight']; |
| 473 | } |
| 474 | } |
| 475 | return [ $lines, $lineHeight ]; |
| 476 | } |
| 477 | |
| 478 | /** |
| 479 | * Adds a logo to the image |
| 480 | * |
| 481 | * @param Imagick $imagick |
| 482 | * @param ImagickPixel $textColor |
| 483 | * @return void |
| 484 | * @throws ImagickDrawException |
| 485 | * @throws ImagickException |
| 486 | */ |
| 487 | private function drawIcon( Imagick $imagick, ImagickPixel $textColor ): void { |
| 488 | $icon = $this->config->get( 'WikiSeoSocialImageIcon' ); |
| 489 | |
| 490 | if ( $icon === null ) { |
| 491 | return; |
| 492 | } |
| 493 | |
| 494 | $icon = MediaWikiServices::getInstance()->getTitleFactory()->makeTitle( NS_FILE, $icon ); |
| 495 | $icon = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo()->findFile( $icon ); |
| 496 | |
| 497 | if ( !$icon->exists() ) { |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | $circle = new Imagick(); |
| 502 | $iconSize = 80; |
| 503 | $circle->newImage( $iconSize, $iconSize, 'none' ); |
| 504 | $circle->setImageFormat( 'png' ); |
| 505 | $circle->setImageMatte( true ); |
| 506 | |
| 507 | $draw = new ImagickDraw(); |
| 508 | $draw->setfillcolor( $textColor ); |
| 509 | $draw->circle( $iconSize / 2, $iconSize / 2, $iconSize / 2, $iconSize - 2 ); |
| 510 | $circle->drawimage( $draw ); |
| 511 | |
| 512 | $iconIm = new Imagick(); |
| 513 | $iconIm->readImage( $icon->getLocalRefPath() ); |
| 514 | $iconIm->setImageMatte( true ); |
| 515 | if ( $iconIm->getImageHeight() > $iconIm->getImageWidth() ) { |
| 516 | $iconIm->resizeImage( 0, $iconSize, Imagick::FILTER_LANCZOS, 1 ); |
| 517 | } else { |
| 518 | $iconIm->resizeImage( $iconSize, 0, Imagick::FILTER_LANCZOS, 1 ); |
| 519 | } |
| 520 | |
| 521 | $iconIm->compositeimage( $circle, Imagick::COMPOSITE_DSTIN, -1, -1 ); |
| 522 | |
| 523 | $x = $this->config->get( 'WikiSeoSocialImageWidth' ) - $iconIm->getImageWidth() - 80; |
| 524 | $y = $this->config->get( 'WikiSeoSocialImageHeight' ) - $iconIm->getImageHeight() - 48; |
| 525 | |
| 526 | $imagick->compositeImage( $iconIm, Imagick::COMPOSITE_OVER, $x, $y ); |
| 527 | |
| 528 | $iconIm->clear(); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Try to retrieve the contributors for a given title |
| 533 | * |
| 534 | * @param string $title |
| 535 | * @return array |
| 536 | */ |
| 537 | private function getContributors( string $title ): array { |
| 538 | try { |
| 539 | $req = new ApiMain( new FauxRequest( [ |
| 540 | 'action' => 'query', |
| 541 | 'prop' => 'contributors', |
| 542 | 'titles' => $title, |
| 543 | 'pcexcludegroup' => 'bot', |
| 544 | 'pclimit' => '10', |
| 545 | 'format' => 'json' |
| 546 | ] ) ); |
| 547 | } catch ( MWException $e ) { |
| 548 | return []; |
| 549 | } |
| 550 | |
| 551 | $req->execute(); |
| 552 | |
| 553 | $data = $req->getResult()->getResultData(); |
| 554 | |
| 555 | if ( ( $data['batchcomplete'] ?? false ) === false || |
| 556 | !isset( $data['query']['pages'] ) || |
| 557 | isset( $data['query']['pages'][-1] ) ) { |
| 558 | return []; |
| 559 | } |
| 560 | |
| 561 | $contributors = array_shift( $data['query']['pages'] )['contributors'] ?? null; |
| 562 | |
| 563 | if ( $contributors === null ) { |
| 564 | return []; |
| 565 | } |
| 566 | |
| 567 | return array_map( static function ( array $contributor ) { |
| 568 | return $contributor['name']; |
| 569 | }, array_filter( $contributors, static function ( $contributor ) { return is_array( $contributor ); |
| 570 | } ) ); |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Convert a code point to UTF8 - Needed to correctly handle the material icon font |
| 575 | * |
| 576 | * @param mixed $c |
| 577 | * @return string |
| 578 | * @throws Exception |
| 579 | */ |
| 580 | private function utf8( $c ) { |
| 581 | if ( $c <= 0x7F ) { |
| 582 | return chr( $c ); |
| 583 | } |
| 584 | if ( $c <= 0x7FF ) { |
| 585 | return chr( ( $c >> 6 ) + 192 ) . chr( ( $c & 63 ) + 128 ); |
| 586 | } |
| 587 | if ( $c <= 0xFFFF ) { |
| 588 | return chr( ( $c >> 12 ) + 224 ) . |
| 589 | chr( ( ( $c >> 6 ) & 63 ) + 128 ) . |
| 590 | chr( ( $c & 63 ) + 128 ); |
| 591 | } |
| 592 | if ( $c <= 0x1FFFFF ) { |
| 593 | return chr( ( $c >> 18 ) + 240 ) . |
| 594 | chr( ( ( $c >> 12 ) & 63 ) + 128 ) . |
| 595 | chr( ( ( $c >> 6 ) & 63 ) + 128 ) . |
| 596 | chr( ( $c & 63 ) + 128 ); |
| 597 | } else { |
| 598 | throw new Exception( 'Could not represent in UTF-8: ' . $c ); |
| 599 | } |
| 600 | } |
| 601 | } |