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| 1 | <?php |
| 2 | /** |
| 3 | * Main file for extension ImageMap. |
| 4 | * |
| 5 | * @file |
| 6 | * @ingroup Extensions |
| 7 | * |
| 8 | * Syntax: |
| 9 | * <imagemap> |
| 10 | * Image:Foo.jpg | 100px | picture of a foo |
| 11 | * |
| 12 | * rect 0 0 50 50 [[Foo type A]] |
| 13 | * circle 50 50 20 [[Foo type B]] |
| 14 | * |
| 15 | * desc bottom-left |
| 16 | * </imagemap> |
| 17 | * |
| 18 | * Coordinates are relative to the source image, not the thumbnail. |
| 19 | */ |
| 20 | |
| 21 | namespace MediaWiki\Extension\ImageMap; |
| 22 | |
| 23 | use DOMDocumentFragment; |
| 24 | use DOMElement; |
| 25 | use MediaWiki\Hook\ParserFirstCallInitHook; |
| 26 | use MediaWiki\MediaWikiServices; |
| 27 | use MediaWiki\Output\OutputPage; |
| 28 | use MediaWiki\Parser\Sanitizer; |
| 29 | use MediaWiki\Title\Title; |
| 30 | use Parser; |
| 31 | use Wikimedia\Assert\Assert; |
| 32 | use Wikimedia\Parsoid\Ext\WTUtils; |
| 33 | use Wikimedia\Parsoid\Utils\DOMCompat; |
| 34 | use Wikimedia\Parsoid\Utils\DOMUtils; |
| 35 | use Xml; |
| 36 | |
| 37 | class ImageMap implements ParserFirstCallInitHook { |
| 38 | |
| 39 | private const TOP_RIGHT = 0; |
| 40 | private const BOTTOM_RIGHT = 1; |
| 41 | private const BOTTOM_LEFT = 2; |
| 42 | private const TOP_LEFT = 3; |
| 43 | private const NONE = 4; |
| 44 | |
| 45 | private const DESC_TYPE_MAP = [ |
| 46 | 'top-right', 'bottom-right', 'bottom-left', 'top-left' |
| 47 | ]; |
| 48 | |
| 49 | /** |
| 50 | * @param Parser $parser |
| 51 | */ |
| 52 | public function onParserFirstCallInit( $parser ) { |
| 53 | $parser->setHook( 'imagemap', [ $this, 'render' ] ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * @param string $input |
| 58 | * @param array $params |
| 59 | * @param Parser $parser |
| 60 | * @return string HTML (Image map, or error message) |
| 61 | */ |
| 62 | public function render( $input, $params, Parser $parser ) { |
| 63 | global $wgUrlProtocols; |
| 64 | $config = MediaWikiServices::getInstance()->getMainConfig(); |
| 65 | $enableLegacyMediaDOM = $config->get( 'ParserEnableLegacyMediaDOM' ); |
| 66 | |
| 67 | $lines = explode( "\n", $input ); |
| 68 | |
| 69 | $first = true; |
| 70 | $scale = 1; |
| 71 | $imageNode = null; |
| 72 | $domDoc = DOMCompat::newDocument( true ); |
| 73 | $domFragment = null; |
| 74 | $thumbWidth = 0; |
| 75 | $thumbHeight = 0; |
| 76 | $imageTitle = null; |
| 77 | $mapHTML = ''; |
| 78 | $links = []; |
| 79 | $explicitNone = false; |
| 80 | |
| 81 | // Define canonical desc types to allow i18n of 'imagemap_desc_types' |
| 82 | $descTypesCanonical = 'top-right, bottom-right, bottom-left, top-left, none'; |
| 83 | $descType = self::BOTTOM_RIGHT; |
| 84 | $defaultLinkAttribs = false; |
| 85 | $realMap = true; |
| 86 | $extLinks = []; |
| 87 | $services = MediaWikiServices::getInstance(); |
| 88 | $repoGroup = $services->getRepoGroup(); |
| 89 | $badFileLookup = $services->getBadFileLookup(); |
| 90 | foreach ( $lines as $lineNum => $line ) { |
| 91 | $lineNum++; |
| 92 | $externLink = false; |
| 93 | |
| 94 | $line = trim( $line ); |
| 95 | if ( $line === '' || $line[0] === '#' ) { |
| 96 | continue; |
| 97 | } |
| 98 | |
| 99 | if ( $first ) { |
| 100 | $first = false; |
| 101 | |
| 102 | // The first line should have an image specification on it |
| 103 | // Extract it and render the HTML |
| 104 | $bits = explode( '|', $line, 2 ); |
| 105 | $image = $bits[0]; |
| 106 | $options = $bits[1] ?? ''; |
| 107 | $imageTitle = Title::newFromText( $image ); |
| 108 | if ( !$imageTitle || !$imageTitle->inNamespace( NS_FILE ) ) { |
| 109 | return $this->error( 'imagemap_no_image' ); |
| 110 | } |
| 111 | if ( $badFileLookup->isBadFile( $imageTitle->getDBkey(), $parser->getTitle() ) ) { |
| 112 | return $this->error( 'imagemap_bad_image' ); |
| 113 | } |
| 114 | // Parse the options so we can use links and the like in the caption |
| 115 | $parsedOptions = $options === '' ? '' : $parser->recursiveTagParse( $options ); |
| 116 | |
| 117 | if ( !$enableLegacyMediaDOM ) { |
| 118 | $explicitNone = preg_match( '/(^|\|)none(\||$)/D', $parsedOptions ); |
| 119 | if ( !$explicitNone ) { |
| 120 | $parsedOptions .= '|none'; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | $imageHTML = $parser->makeImage( $imageTitle, $parsedOptions ); |
| 125 | $parser->replaceLinkHolders( $imageHTML ); |
| 126 | $imageHTML = $parser->getStripState()->unstripBoth( $imageHTML ); |
| 127 | $imageHTML = Sanitizer::normalizeCharReferences( $imageHTML ); |
| 128 | |
| 129 | $domFragment = $domDoc->createDocumentFragment(); |
| 130 | DOMUtils::setFragmentInnerHTML( $domFragment, $imageHTML ); |
| 131 | $imageNode = DOMCompat::querySelector( $domFragment, 'img' ); |
| 132 | if ( !$imageNode ) { |
| 133 | return $this->error( 'imagemap_invalid_image' ); |
| 134 | } |
| 135 | $thumbWidth = (int)$imageNode->getAttribute( 'width' ); |
| 136 | $thumbHeight = (int)$imageNode->getAttribute( 'height' ); |
| 137 | |
| 138 | $imageObj = $repoGroup->findFile( $imageTitle ); |
| 139 | if ( !$imageObj || !$imageObj->exists() ) { |
| 140 | return $this->error( 'imagemap_invalid_image' ); |
| 141 | } |
| 142 | // Add the linear dimensions to avoid inaccuracy in the scale |
| 143 | // factor when one is much larger than the other |
| 144 | // (sx+sy)/(x+y) = s |
| 145 | $denominator = $imageObj->getWidth() + $imageObj->getHeight(); |
| 146 | $numerator = $thumbWidth + $thumbHeight; |
| 147 | if ( $denominator <= 0 || $numerator <= 0 ) { |
| 148 | return $this->error( 'imagemap_invalid_image' ); |
| 149 | } |
| 150 | $scale = $numerator / $denominator; |
| 151 | continue; |
| 152 | } |
| 153 | |
| 154 | // Handle desc spec |
| 155 | $cmd = strtok( $line, " \t" ); |
| 156 | if ( $cmd === 'desc' ) { |
| 157 | $typesText = wfMessage( 'imagemap_desc_types' )->inContentLanguage()->text(); |
| 158 | if ( $descTypesCanonical !== $typesText ) { |
| 159 | // i18n desc types exists |
| 160 | $typesText = $descTypesCanonical . ', ' . $typesText; |
| 161 | } |
| 162 | $types = array_map( 'trim', explode( ',', $typesText ) ); |
| 163 | $type = trim( strtok( '' ) ?: '' ); |
| 164 | $descType = array_search( $type, $types ); |
| 165 | if ( $descType > 4 ) { |
| 166 | // A localized descType is used. Subtract 5 to reach the canonical desc type. |
| 167 | $descType -= 5; |
| 168 | } |
| 169 | // <0? In theory never, but paranoia... |
| 170 | if ( $descType === false || $descType < 0 ) { |
| 171 | return $this->error( 'imagemap_invalid_desc', $typesText ); |
| 172 | } |
| 173 | continue; |
| 174 | } |
| 175 | |
| 176 | $title = false; |
| 177 | $alt = ''; |
| 178 | // Find the link |
| 179 | $link = trim( strstr( $line, '[' ) ); |
| 180 | $m = []; |
| 181 | if ( preg_match( '/^ \[\[ ([^|]*+) \| ([^\]]*+) \]\] \w* $ /x', $link, $m ) ) { |
| 182 | $title = Title::newFromText( $m[1] ); |
| 183 | $alt = trim( $m[2] ); |
| 184 | } elseif ( preg_match( '/^ \[\[ ([^\]]*+) \]\] \w* $ /x', $link, $m ) ) { |
| 185 | $title = Title::newFromText( $m[1] ); |
| 186 | if ( $title === null ) { |
| 187 | return $this->error( 'imagemap_invalid_title', $lineNum ); |
| 188 | } |
| 189 | $alt = $title->getFullText(); |
| 190 | } elseif ( in_array( substr( $link, 1, strpos( $link, '//' ) + 1 ), $wgUrlProtocols ) |
| 191 | || in_array( substr( $link, 1, strpos( $link, ':' ) ), $wgUrlProtocols ) |
| 192 | ) { |
| 193 | if ( preg_match( '/^ \[ ([^\s]*+) \s ([^\]]*+) \] \w* $ /x', $link, $m ) ) { |
| 194 | $title = $m[1]; |
| 195 | $alt = trim( $m[2] ); |
| 196 | $externLink = true; |
| 197 | } elseif ( preg_match( '/^ \[ ([^\]]*+) \] \w* $ /x', $link, $m ) ) { |
| 198 | $title = $alt = trim( $m[1] ); |
| 199 | $externLink = true; |
| 200 | } |
| 201 | } else { |
| 202 | return $this->error( 'imagemap_no_link', $lineNum ); |
| 203 | } |
| 204 | if ( !$title ) { |
| 205 | return $this->error( 'imagemap_invalid_title', $lineNum ); |
| 206 | } |
| 207 | |
| 208 | $shapeSpec = substr( $line, 0, -strlen( $link ) ); |
| 209 | |
| 210 | // Tokenize shape spec |
| 211 | $shape = strtok( $shapeSpec, " \t" ); |
| 212 | switch ( $shape ) { |
| 213 | case 'default': |
| 214 | $coords = []; |
| 215 | break; |
| 216 | case 'rect': |
| 217 | $coords = $this->tokenizeCoords( $lineNum, 4 ); |
| 218 | if ( !is_array( $coords ) ) { |
| 219 | return $coords; |
| 220 | } |
| 221 | break; |
| 222 | case 'circle': |
| 223 | $coords = $this->tokenizeCoords( $lineNum, 3 ); |
| 224 | if ( !is_array( $coords ) ) { |
| 225 | return $coords; |
| 226 | } |
| 227 | break; |
| 228 | case 'poly': |
| 229 | $coords = $this->tokenizeCoords( $lineNum, 1, true ); |
| 230 | if ( !is_array( $coords ) ) { |
| 231 | return $coords; |
| 232 | } |
| 233 | if ( count( $coords ) % 2 !== 0 ) { |
| 234 | return $this->error( 'imagemap_poly_odd', $lineNum ); |
| 235 | } |
| 236 | break; |
| 237 | default: |
| 238 | return $this->error( 'imagemap_unrecognised_shape', $lineNum ); |
| 239 | } |
| 240 | |
| 241 | // Scale the coords using the size of the source image |
| 242 | foreach ( $coords as $i => $c ) { |
| 243 | $coords[$i] = (int)round( $c * $scale ); |
| 244 | } |
| 245 | |
| 246 | // Construct the area tag |
| 247 | $attribs = []; |
| 248 | if ( $externLink ) { |
| 249 | // Get the 'target' and 'rel' attributes for external link. |
| 250 | $attribs = $parser->getExternalLinkAttribs( $title ); |
| 251 | |
| 252 | $attribs['href'] = $title; |
| 253 | $attribs['class'] = 'plainlinks'; |
| 254 | } elseif ( $title->getFragment() !== '' && $title->getPrefixedDBkey() === '' ) { |
| 255 | // XXX: kluge to handle [[#Fragment]] links, should really fix getLocalURL() |
| 256 | // in Title.php to return an empty string in this case |
| 257 | $attribs['href'] = $title->getFragmentForURL(); |
| 258 | } else { |
| 259 | $attribs['href'] = $title->getLocalURL() . $title->getFragmentForURL(); |
| 260 | } |
| 261 | if ( $shape !== 'default' ) { |
| 262 | $attribs['shape'] = $shape; |
| 263 | } |
| 264 | if ( $coords ) { |
| 265 | $attribs['coords'] = implode( ',', $coords ); |
| 266 | } |
| 267 | if ( $alt !== '' ) { |
| 268 | if ( $shape !== 'default' ) { |
| 269 | $attribs['alt'] = $alt; |
| 270 | } |
| 271 | $attribs['title'] = $alt; |
| 272 | } |
| 273 | if ( $shape === 'default' ) { |
| 274 | $defaultLinkAttribs = $attribs; |
| 275 | } else { |
| 276 | // @phan-suppress-next-line SecurityCheck-DoubleEscaped |
| 277 | $mapHTML .= Xml::element( 'area', $attribs ) . "\n"; |
| 278 | } |
| 279 | if ( $externLink ) { |
| 280 | $extLinks[] = $title; |
| 281 | } else { |
| 282 | $links[] = $title; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if ( !$imageNode || !$domFragment ) { |
| 287 | return $this->error( 'imagemap_no_image' ); |
| 288 | } |
| 289 | |
| 290 | if ( $mapHTML === '' ) { |
| 291 | // no areas defined, default only. It's not a real imagemap, so we do not need some tags |
| 292 | $realMap = false; |
| 293 | } |
| 294 | |
| 295 | if ( $realMap ) { |
| 296 | // Construct the map |
| 297 | // Add a hash of the map HTML to avoid breaking cached HTML fragments that are |
| 298 | // later joined together on the one page (T18471). |
| 299 | // The only way these hashes can clash is if the map is identical, in which |
| 300 | // case it wouldn't matter that the "wrong" map was used. |
| 301 | $mapName = 'ImageMap_' . substr( md5( $mapHTML ), 0, 16 ); |
| 302 | $mapHTML = "<map name=\"$mapName\">\n$mapHTML</map>\n"; |
| 303 | |
| 304 | // Alter the image tag |
| 305 | $imageNode->setAttribute( 'usemap', "#$mapName" ); |
| 306 | } |
| 307 | |
| 308 | if ( $mapHTML !== '' ) { |
| 309 | $mapFragment = $domDoc->createDocumentFragment(); |
| 310 | DOMUtils::setFragmentInnerHTML( $mapFragment, $mapHTML ); |
| 311 | $mapNode = $mapFragment->firstChild; |
| 312 | } |
| 313 | |
| 314 | $div = null; |
| 315 | |
| 316 | if ( $enableLegacyMediaDOM ) { |
| 317 | // Add a surrounding div, remove the default link to the description page |
| 318 | $anchor = $imageNode->parentNode; |
| 319 | $parent = $anchor->parentNode; |
| 320 | '@phan-var DOMElement $anchor'; |
| 321 | |
| 322 | // Handle cases where there are no anchors, like `|link=` |
| 323 | if ( $anchor instanceof DOMDocumentFragment ) { |
| 324 | $parent = $anchor; |
| 325 | $anchor = $imageNode; |
| 326 | } |
| 327 | |
| 328 | $div = $domDoc->createElement( 'div' ); |
| 329 | $parent->insertBefore( $div, $anchor ); |
| 330 | $div->setAttribute( 'class', 'noresize' ); |
| 331 | if ( $defaultLinkAttribs ) { |
| 332 | $defaultAnchor = $domDoc->createElement( 'a' ); |
| 333 | $div->appendChild( $defaultAnchor ); |
| 334 | foreach ( $defaultLinkAttribs as $name => $value ) { |
| 335 | $defaultAnchor->setAttribute( $name, $value ); |
| 336 | } |
| 337 | $imageParent = $defaultAnchor; |
| 338 | } else { |
| 339 | $imageParent = $div; |
| 340 | } |
| 341 | |
| 342 | // Add the map HTML to the div |
| 343 | if ( isset( $mapNode ) ) { |
| 344 | $div->appendChild( $mapNode ); |
| 345 | } |
| 346 | |
| 347 | $imageParent->appendChild( $imageNode->cloneNode( true ) ); |
| 348 | $parent->removeChild( $anchor ); |
| 349 | } else { |
| 350 | $anchor = $imageNode->parentNode; |
| 351 | $wrapper = $anchor->parentNode; |
| 352 | Assert::precondition( $wrapper instanceof DOMElement, 'Anchor node has a parent' ); |
| 353 | '@phan-var DOMElement $anchor'; |
| 354 | |
| 355 | $classes = $wrapper->getAttribute( 'class' ); |
| 356 | |
| 357 | // For T22030 |
| 358 | $classes .= ( $classes ? ' ' : '' ) . 'noresize'; |
| 359 | |
| 360 | // Remove that class if it was only added while forcing a block |
| 361 | if ( !$explicitNone ) { |
| 362 | $classes = trim( preg_replace( '/ ?mw-halign-none/', '', $classes ) ); |
| 363 | } |
| 364 | |
| 365 | $wrapper->setAttribute( 'class', $classes ); |
| 366 | |
| 367 | if ( $defaultLinkAttribs ) { |
| 368 | $imageParent = $domDoc->createElement( 'a' ); |
| 369 | foreach ( $defaultLinkAttribs as $name => $value ) { |
| 370 | $imageParent->setAttribute( $name, $value ); |
| 371 | } |
| 372 | } else { |
| 373 | $imageParent = $domDoc->createElement( 'span' ); |
| 374 | } |
| 375 | $wrapper->insertBefore( $imageParent, $anchor ); |
| 376 | |
| 377 | if ( !WTUtils::hasVisibleCaption( $wrapper ) ) { |
| 378 | $caption = DOMCompat::querySelector( $domFragment, 'figcaption' ); |
| 379 | $captionText = trim( WTUtils::textContentFromCaption( $caption ) ); |
| 380 | if ( $captionText ) { |
| 381 | $imageParent->setAttribute( 'title', $captionText ); |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | if ( isset( $mapNode ) ) { |
| 386 | $wrapper->insertBefore( $mapNode, $anchor ); |
| 387 | } |
| 388 | |
| 389 | $imageParent->appendChild( $imageNode->cloneNode( true ) ); |
| 390 | $wrapper->removeChild( $anchor ); |
| 391 | } |
| 392 | |
| 393 | $parserOutput = $parser->getOutput(); |
| 394 | |
| 395 | if ( $enableLegacyMediaDOM ) { |
| 396 | // Determine whether a "magnify" link is present |
| 397 | $magnify = DOMCompat::querySelector( $domFragment, '.magnify' ); |
| 398 | if ( !$magnify && $descType !== self::NONE ) { |
| 399 | // Add image description link |
| 400 | if ( $descType === self::TOP_LEFT || $descType === self::BOTTOM_LEFT ) { |
| 401 | $marginLeft = 0; |
| 402 | } else { |
| 403 | $marginLeft = $thumbWidth - 20; |
| 404 | } |
| 405 | if ( $descType === self::TOP_LEFT || $descType === self::TOP_RIGHT ) { |
| 406 | $marginTop = -$thumbHeight; |
| 407 | // 1px hack for IE, to stop it poking out the top |
| 408 | $marginTop++; |
| 409 | } else { |
| 410 | $marginTop = -20; |
| 411 | } |
| 412 | $div->setAttribute( 'style', "height: {$thumbHeight}px; width: {$thumbWidth}px; " ); |
| 413 | $descWrapper = $domDoc->createElement( 'div' ); |
| 414 | $div->appendChild( $descWrapper ); |
| 415 | $descWrapper->setAttribute( 'style', |
| 416 | "margin-left: {$marginLeft}px; " . |
| 417 | "margin-top: {$marginTop}px; " . |
| 418 | "text-align: left;" |
| 419 | ); |
| 420 | |
| 421 | $descAnchor = $domDoc->createElement( 'a' ); |
| 422 | $descWrapper->appendChild( $descAnchor ); |
| 423 | $descAnchor->setAttribute( 'href', $imageTitle->getLocalURL() ); |
| 424 | $descAnchor->setAttribute( |
| 425 | 'title', |
| 426 | wfMessage( 'imagemap_description' )->inContentLanguage()->text() |
| 427 | ); |
| 428 | $descImg = $domDoc->createElement( 'img' ); |
| 429 | $descAnchor->appendChild( $descImg ); |
| 430 | $descImg->setAttribute( |
| 431 | 'alt', |
| 432 | wfMessage( 'imagemap_description' )->inContentLanguage()->text() |
| 433 | ); |
| 434 | $url = $config->get( 'ExtensionAssetsPath' ) . '/ImageMap/resources/desc-20.png'; |
| 435 | $descImg->setAttribute( |
| 436 | 'src', |
| 437 | OutputPage::transformResourcePath( $config, $url ) |
| 438 | ); |
| 439 | $descImg->setAttribute( 'style', 'border: none;' ); |
| 440 | } |
| 441 | } else { |
| 442 | '@phan-var DOMElement $wrapper'; |
| 443 | $typeOf = $wrapper->getAttribute( 'typeof' ); |
| 444 | if ( preg_match( '#\bmw:File/Thumb\b#', $typeOf ) ) { |
| 445 | // $imageNode was cloned above |
| 446 | $img = $imageParent->firstChild; |
| 447 | '@phan-var DOMElement $img'; |
| 448 | if ( !$img->hasAttribute( 'resource' ) ) { |
| 449 | $img->setAttribute( 'resource', $imageTitle->getLocalURL() ); |
| 450 | } |
| 451 | } elseif ( $descType !== self::NONE ) { |
| 452 | // The following classes are used here: |
| 453 | // * mw-ext-imagemap-desc-top-right |
| 454 | // * mw-ext-imagemap-desc-bottom-right |
| 455 | // * mw-ext-imagemap-desc-bottom-left |
| 456 | // * mw-ext-imagemap-desc-top-left |
| 457 | DOMCompat::getClassList( $wrapper )->add( |
| 458 | 'mw-ext-imagemap-desc-' . self::DESC_TYPE_MAP[$descType] |
| 459 | ); |
| 460 | // $imageNode was cloned above |
| 461 | $img = $imageParent->firstChild; |
| 462 | '@phan-var DOMElement $img'; |
| 463 | if ( !$img->hasAttribute( 'resource' ) ) { |
| 464 | $img->setAttribute( 'resource', $imageTitle->getLocalURL() ); |
| 465 | } |
| 466 | $parserOutput->addModules( [ 'ext.imagemap' ] ); |
| 467 | $parserOutput->addModuleStyles( [ 'ext.imagemap.styles' ] ); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | // Output the result (XHTML-compliant) |
| 472 | $output = DOMUtils::getFragmentInnerHTML( $domFragment ); |
| 473 | |
| 474 | // Register links |
| 475 | foreach ( $links as $title ) { |
| 476 | if ( $title->isExternal() || $title->getNamespace() === NS_SPECIAL ) { |
| 477 | // Don't register special or interwiki links... |
| 478 | } elseif ( $title->getNamespace() === NS_MEDIA ) { |
| 479 | // Regular Media: links are recorded as image usages |
| 480 | $parserOutput->addImage( $title->getDBkey() ); |
| 481 | } else { |
| 482 | // Plain ol' link |
| 483 | $parserOutput->addLink( $title ); |
| 484 | } |
| 485 | } |
| 486 | foreach ( $extLinks as $title ) { |
| 487 | $parserOutput->addExternalLink( $title ); |
| 488 | } |
| 489 | // Armour output against broken parser |
| 490 | return str_replace( "\n", '', $output ); |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * @param int|string $lineNum Line number, for error reporting |
| 495 | * @param int $minCount Minimum token count |
| 496 | * @param bool $allowNegative |
| 497 | * @return array|string String with error (HTML), or array of coordinates |
| 498 | */ |
| 499 | private function tokenizeCoords( $lineNum, $minCount = 0, $allowNegative = false ) { |
| 500 | $coords = []; |
| 501 | $coord = strtok( " \t" ); |
| 502 | while ( $coord !== false ) { |
| 503 | if ( !is_numeric( $coord ) || $coord > 1e9 || ( !$allowNegative && $coord < 0 ) ) { |
| 504 | return $this->error( 'imagemap_invalid_coord', $lineNum ); |
| 505 | } |
| 506 | $coords[] = $coord; |
| 507 | $coord = strtok( " \t" ); |
| 508 | } |
| 509 | if ( count( $coords ) < $minCount ) { |
| 510 | // TODO: Should this also check there aren't too many coords? |
| 511 | return $this->error( 'imagemap_missing_coord', $lineNum ); |
| 512 | } |
| 513 | return $coords; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * @param string $name |
| 518 | * @param string|int|bool $line |
| 519 | * @return string HTML |
| 520 | */ |
| 521 | private function error( $name, $line = false ) { |
| 522 | return '<p class="error">' . wfMessage( $name, $line )->parse() . '</p>'; |
| 523 | } |
| 524 | } |