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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\ParserFunctions; |
| 4 | |
| 5 | use Config; |
| 6 | use DateTime; |
| 7 | use DateTimeZone; |
| 8 | use Exception; |
| 9 | use LinkCache; |
| 10 | use MediaWiki\HookContainer\HookContainer; |
| 11 | use MediaWiki\Languages\LanguageConverterFactory; |
| 12 | use MediaWiki\Languages\LanguageFactory; |
| 13 | use MediaWiki\Languages\LanguageNameUtils; |
| 14 | use MediaWiki\SpecialPage\SpecialPageFactory; |
| 15 | use MWTimestamp; |
| 16 | use Parser; |
| 17 | use PPFrame; |
| 18 | use PPNode; |
| 19 | use RepoGroup; |
| 20 | use Sanitizer; |
| 21 | use StringUtils; |
| 22 | use StubObject; |
| 23 | use Title; |
| 24 | use Wikimedia\RequestTimeout\TimeoutException; |
| 25 | |
| 26 | /** |
| 27 | * Parser function handlers |
| 28 | * |
| 29 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions |
| 30 | */ |
| 31 | class ParserFunctions { |
| 32 | private static $mExprParser = null; |
| 33 | private static $mTimeCache = []; |
| 34 | private static $mTimeChars = 0; |
| 35 | |
| 36 | /** ~10 seconds */ |
| 37 | private const MAX_TIME_CHARS = 6000; |
| 38 | |
| 39 | /** @var Config */ |
| 40 | private $config; |
| 41 | |
| 42 | /** @var HookContainer */ |
| 43 | private $hookContainer; |
| 44 | |
| 45 | /** @var LanguageConverterFactory */ |
| 46 | private $languageConverterFactory; |
| 47 | |
| 48 | /** @var LanguageFactory */ |
| 49 | private $languageFactory; |
| 50 | |
| 51 | /** @var LanguageNameUtils */ |
| 52 | private $languageNameUtils; |
| 53 | |
| 54 | /** @var LinkCache */ |
| 55 | private $linkCache; |
| 56 | |
| 57 | /** @var RepoGroup */ |
| 58 | private $repoGroup; |
| 59 | |
| 60 | /** @var SpecialPageFactory */ |
| 61 | private $specialPageFactory; |
| 62 | |
| 63 | /** |
| 64 | * @param Config $config |
| 65 | * @param HookContainer $hookContainer |
| 66 | * @param LanguageConverterFactory $languageConverterFactory |
| 67 | * @param LanguageFactory $languageFactory |
| 68 | * @param LanguageNameUtils $languageNameUtils |
| 69 | * @param LinkCache $linkCache |
| 70 | * @param RepoGroup $repoGroup |
| 71 | * @param SpecialPageFactory $specialPageFactory |
| 72 | */ |
| 73 | public function __construct( |
| 74 | Config $config, |
| 75 | HookContainer $hookContainer, |
| 76 | LanguageConverterFactory $languageConverterFactory, |
| 77 | LanguageFactory $languageFactory, |
| 78 | LanguageNameUtils $languageNameUtils, |
| 79 | LinkCache $linkCache, |
| 80 | RepoGroup $repoGroup, |
| 81 | SpecialPageFactory $specialPageFactory |
| 82 | ) { |
| 83 | $this->config = $config; |
| 84 | $this->hookContainer = $hookContainer; |
| 85 | $this->languageConverterFactory = $languageConverterFactory; |
| 86 | $this->languageFactory = $languageFactory; |
| 87 | $this->languageNameUtils = $languageNameUtils; |
| 88 | $this->linkCache = $linkCache; |
| 89 | $this->repoGroup = $repoGroup; |
| 90 | $this->specialPageFactory = $specialPageFactory; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @return ExprParser |
| 95 | */ |
| 96 | private static function &getExprParser() { |
| 97 | if ( self::$mExprParser === null ) { |
| 98 | self::$mExprParser = new ExprParser; |
| 99 | } |
| 100 | return self::$mExprParser; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * {{#expr: expression }} |
| 105 | * |
| 106 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##expr |
| 107 | * |
| 108 | * @param Parser $parser |
| 109 | * @param string $expr |
| 110 | * @return string |
| 111 | */ |
| 112 | public function expr( Parser $parser, $expr = '' ) { |
| 113 | try { |
| 114 | return self::getExprParser()->doExpression( $expr ); |
| 115 | } catch ( ExprError $e ) { |
| 116 | return '<strong class="error">' . htmlspecialchars( $e->getUserFriendlyMessage() ) . '</strong>'; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * {{#ifexpr: expression | value if true | value if false }} |
| 122 | * |
| 123 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifexpr |
| 124 | * |
| 125 | * @param Parser $parser |
| 126 | * @param PPFrame $frame |
| 127 | * @param PPNode[] $args |
| 128 | * @return string |
| 129 | */ |
| 130 | public function ifexpr( Parser $parser, PPFrame $frame, array $args ) { |
| 131 | $expr = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 132 | $then = $args[1] ?? ''; |
| 133 | $else = $args[2] ?? ''; |
| 134 | |
| 135 | try { |
| 136 | $result = self::getExprParser()->doExpression( $expr ); |
| 137 | if ( is_numeric( $result ) ) { |
| 138 | $result = (float)$result; |
| 139 | } |
| 140 | $result = $result ? $then : $else; |
| 141 | } catch ( ExprError $e ) { |
| 142 | return '<strong class="error">' . htmlspecialchars( $e->getUserFriendlyMessage() ) . '</strong>'; |
| 143 | } |
| 144 | |
| 145 | if ( is_object( $result ) ) { |
| 146 | $result = trim( $frame->expand( $result ) ); |
| 147 | } |
| 148 | |
| 149 | return $result; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * {{#if: test string | value if test string is not empty | value if test string is empty }} |
| 154 | * |
| 155 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##if |
| 156 | * |
| 157 | * @param Parser $parser |
| 158 | * @param PPFrame $frame |
| 159 | * @param PPNode[] $args |
| 160 | * @return string |
| 161 | */ |
| 162 | public function if( Parser $parser, PPFrame $frame, array $args ) { |
| 163 | $test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 164 | if ( $test !== '' ) { |
| 165 | return isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : ''; |
| 166 | } else { |
| 167 | return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : ''; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * {{#ifeq: string 1 | string 2 | value if identical | value if different }} |
| 173 | * |
| 174 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifeq |
| 175 | * |
| 176 | * @param Parser $parser |
| 177 | * @param PPFrame $frame |
| 178 | * @param PPNode[] $args |
| 179 | * @return string |
| 180 | */ |
| 181 | public function ifeq( Parser $parser, PPFrame $frame, array $args ) { |
| 182 | $left = isset( $args[0] ) ? self::decodeTrimExpand( $args[0], $frame ) : ''; |
| 183 | $right = isset( $args[1] ) ? self::decodeTrimExpand( $args[1], $frame ) : ''; |
| 184 | |
| 185 | // Strict compare is not possible here. 01 should equal 1 for example. |
| 186 | /** @noinspection TypeUnsafeComparisonInspection */ |
| 187 | if ( $left == $right ) { |
| 188 | return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : ''; |
| 189 | } else { |
| 190 | return isset( $args[3] ) ? trim( $frame->expand( $args[3] ) ) : ''; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | /** |
| 195 | * {{#iferror: test string | value if error | value if no error }} |
| 196 | * |
| 197 | * Error is when the input string contains an HTML object with class="error", as |
| 198 | * generated by other parser functions such as #expr, #time and #rel2abs. |
| 199 | * |
| 200 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##iferror |
| 201 | * |
| 202 | * @param Parser $parser |
| 203 | * @param PPFrame $frame |
| 204 | * @param PPNode[] $args |
| 205 | * @return string |
| 206 | */ |
| 207 | public function iferror( Parser $parser, PPFrame $frame, array $args ) { |
| 208 | $test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 209 | $then = $args[1] ?? false; |
| 210 | $else = $args[2] ?? false; |
| 211 | |
| 212 | if ( preg_match( |
| 213 | '/<(?:strong|span|p|div)\s(?:[^\s>]*\s+)*?class="(?:[^"\s>]*\s+)*?error(?:\s[^">]*)?"/', |
| 214 | $test ) |
| 215 | ) { |
| 216 | $result = $then; |
| 217 | } elseif ( $else === false ) { |
| 218 | $result = $test; |
| 219 | } else { |
| 220 | $result = $else; |
| 221 | } |
| 222 | if ( $result === false ) { |
| 223 | return ''; |
| 224 | } |
| 225 | |
| 226 | return trim( $frame->expand( $result ) ); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * {{#switch: comparison string |
| 231 | * | case = result |
| 232 | * | case = result |
| 233 | * | ... |
| 234 | * | default result |
| 235 | * }} |
| 236 | * |
| 237 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##switch |
| 238 | * |
| 239 | * @param Parser $parser |
| 240 | * @param PPFrame $frame |
| 241 | * @param PPNode[] $args |
| 242 | * @return string |
| 243 | */ |
| 244 | public function switch( Parser $parser, PPFrame $frame, array $args ) { |
| 245 | if ( count( $args ) === 0 ) { |
| 246 | return ''; |
| 247 | } |
| 248 | $primary = self::decodeTrimExpand( array_shift( $args ), $frame ); |
| 249 | $found = $defaultFound = false; |
| 250 | $default = null; |
| 251 | $lastItemHadNoEquals = false; |
| 252 | $lastItem = ''; |
| 253 | $mwDefault = $parser->getMagicWordFactory()->get( 'default' ); |
| 254 | foreach ( $args as $arg ) { |
| 255 | $bits = $arg->splitArg(); |
| 256 | $nameNode = $bits['name']; |
| 257 | $index = $bits['index']; |
| 258 | $valueNode = $bits['value']; |
| 259 | |
| 260 | if ( $index === '' ) { |
| 261 | # Found "=" |
| 262 | $lastItemHadNoEquals = false; |
| 263 | if ( $found ) { |
| 264 | # Multiple input match |
| 265 | return trim( $frame->expand( $valueNode ) ); |
| 266 | } |
| 267 | $test = self::decodeTrimExpand( $nameNode, $frame ); |
| 268 | /** @noinspection TypeUnsafeComparisonInspection */ |
| 269 | if ( $test == $primary ) { |
| 270 | # Found a match, return now |
| 271 | return trim( $frame->expand( $valueNode ) ); |
| 272 | } |
| 273 | if ( $defaultFound || $mwDefault->matchStartToEnd( $test ) ) { |
| 274 | $default = $valueNode; |
| 275 | $defaultFound = false; |
| 276 | } # else wrong case, continue |
| 277 | } else { |
| 278 | # Multiple input, single output |
| 279 | # If the value matches, set a flag and continue |
| 280 | $lastItemHadNoEquals = true; |
| 281 | // $lastItem is an "out" variable |
| 282 | $decodedTest = self::decodeTrimExpand( $valueNode, $frame, $lastItem ); |
| 283 | /** @noinspection TypeUnsafeComparisonInspection */ |
| 284 | if ( $decodedTest == $primary ) { |
| 285 | $found = true; |
| 286 | } elseif ( $mwDefault->matchStartToEnd( $decodedTest ) ) { |
| 287 | $defaultFound = true; |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | # Default case |
| 292 | # Check if the last item had no = sign, thus specifying the default case |
| 293 | if ( $lastItemHadNoEquals ) { |
| 294 | return $lastItem; |
| 295 | } |
| 296 | if ( $default === null ) { |
| 297 | return ''; |
| 298 | } |
| 299 | return trim( $frame->expand( $default ) ); |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * {{#rel2abs: path }} or {{#rel2abs: path | base path }} |
| 304 | * |
| 305 | * Returns the absolute path to a subpage, relative to the current article |
| 306 | * title. Treats titles as slash-separated paths. |
| 307 | * |
| 308 | * Following subpage link syntax instead of standard path syntax, an |
| 309 | * initial slash is treated as a relative path, and vice versa. |
| 310 | * |
| 311 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##rel2abs |
| 312 | * |
| 313 | * @param Parser $parser |
| 314 | * @param string $to |
| 315 | * @param string $from |
| 316 | * |
| 317 | * @return string |
| 318 | */ |
| 319 | public function rel2abs( Parser $parser, $to = '', $from = '' ) { |
| 320 | $from = trim( $from ); |
| 321 | if ( $from === '' ) { |
| 322 | $from = $parser->getTitle()->getPrefixedText(); |
| 323 | } |
| 324 | |
| 325 | $to = rtrim( $to, ' /' ); |
| 326 | |
| 327 | // if we have an empty path, or just one containing a dot |
| 328 | if ( $to === '' || $to === '.' ) { |
| 329 | return $from; |
| 330 | } |
| 331 | |
| 332 | // if the path isn't relative |
| 333 | if ( substr( $to, 0, 1 ) !== '/' && |
| 334 | substr( $to, 0, 2 ) !== './' && |
| 335 | substr( $to, 0, 3 ) !== '../' && |
| 336 | $to !== '..' |
| 337 | ) { |
| 338 | $from = ''; |
| 339 | } |
| 340 | // Make a long path, containing both, enclose it in /.../ |
| 341 | $fullPath = '/' . $from . '/' . $to . '/'; |
| 342 | |
| 343 | // remove redundant current path dots |
| 344 | $fullPath = preg_replace( '!/(\./)+!', '/', $fullPath ); |
| 345 | |
| 346 | // remove double slashes |
| 347 | $fullPath = preg_replace( '!/{2,}!', '/', $fullPath ); |
| 348 | |
| 349 | // remove the enclosing slashes now |
| 350 | $fullPath = trim( $fullPath, '/' ); |
| 351 | $exploded = explode( '/', $fullPath ); |
| 352 | $newExploded = []; |
| 353 | |
| 354 | foreach ( $exploded as $current ) { |
| 355 | if ( $current === '..' ) { // removing one level |
| 356 | if ( !count( $newExploded ) ) { |
| 357 | // attempted to access a node above root node |
| 358 | $msg = wfMessage( 'pfunc_rel2abs_invalid_depth', $fullPath ) |
| 359 | ->inContentLanguage()->escaped(); |
| 360 | return '<strong class="error">' . $msg . '</strong>'; |
| 361 | } |
| 362 | // remove last level from the stack |
| 363 | array_pop( $newExploded ); |
| 364 | } else { |
| 365 | // add the current level to the stack |
| 366 | $newExploded[] = $current; |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | // we can now join it again |
| 371 | return implode( '/', $newExploded ); |
| 372 | } |
| 373 | |
| 374 | /** |
| 375 | * @param Parser $parser |
| 376 | * @param string $titletext |
| 377 | * |
| 378 | * @return bool |
| 379 | */ |
| 380 | private function ifexistInternal( Parser $parser, $titletext ): bool { |
| 381 | $title = Title::newFromText( $titletext ); |
| 382 | $this->languageConverterFactory->getLanguageConverter( $parser->getContentLanguage() ) |
| 383 | ->findVariantLink( $titletext, $title, true ); |
| 384 | if ( !$title ) { |
| 385 | return false; |
| 386 | } |
| 387 | |
| 388 | if ( $title->getNamespace() === NS_MEDIA ) { |
| 389 | /* If namespace is specified as NS_MEDIA, then we want to |
| 390 | * check the physical file, not the "description" page. |
| 391 | */ |
| 392 | if ( !$parser->incrementExpensiveFunctionCount() ) { |
| 393 | return false; |
| 394 | } |
| 395 | $file = $this->repoGroup->findFile( $title ); |
| 396 | if ( !$file ) { |
| 397 | $parser->getOutput()->addImage( |
| 398 | $title->getDBKey(), false, false ); |
| 399 | return false; |
| 400 | } |
| 401 | $parser->getOutput()->addImage( |
| 402 | $file->getName(), $file->getTimestamp(), $file->getSha1() ); |
| 403 | return $file->exists(); |
| 404 | } |
| 405 | if ( $title->isSpecialPage() ) { |
| 406 | /* Don't bother with the count for special pages, |
| 407 | * since their existence can be checked without |
| 408 | * accessing the database. |
| 409 | */ |
| 410 | return $this->specialPageFactory->exists( $title->getDBkey() ); |
| 411 | } |
| 412 | if ( $title->isExternal() ) { |
| 413 | /* Can't check the existence of pages on other sites, |
| 414 | * so just return false. Makes a sort of sense, since |
| 415 | * they don't exist _locally_. |
| 416 | */ |
| 417 | return false; |
| 418 | } |
| 419 | $pdbk = $title->getPrefixedDBkey(); |
| 420 | $id = $this->linkCache->getGoodLinkID( $pdbk ); |
| 421 | if ( $id !== 0 ) { |
| 422 | $parser->getOutput()->addLink( $title, $id ); |
| 423 | return true; |
| 424 | } |
| 425 | if ( $this->linkCache->isBadLink( $pdbk ) ) { |
| 426 | $parser->getOutput()->addLink( $title, 0 ); |
| 427 | return false; |
| 428 | } |
| 429 | if ( !$parser->incrementExpensiveFunctionCount() ) { |
| 430 | return false; |
| 431 | } |
| 432 | $id = $title->getArticleID(); |
| 433 | $parser->getOutput()->addLink( $title, $id ); |
| 434 | |
| 435 | // bug 70495: don't just check whether the ID != 0 |
| 436 | return $title->exists(); |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * {{#ifexist: page title | value if exists | value if doesn't exist }} |
| 441 | * |
| 442 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##ifexist |
| 443 | * |
| 444 | * @param Parser $parser |
| 445 | * @param PPFrame $frame |
| 446 | * @param PPNode[] $args |
| 447 | * @return string |
| 448 | */ |
| 449 | public function ifexist( Parser $parser, PPFrame $frame, array $args ) { |
| 450 | $title = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 451 | $then = $args[1] ?? null; |
| 452 | $else = $args[2] ?? null; |
| 453 | |
| 454 | $result = $this->ifexistInternal( $parser, $title ) ? $then : $else; |
| 455 | if ( $result === null ) { |
| 456 | return ''; |
| 457 | } |
| 458 | return trim( $frame->expand( $result ) ); |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Used by time() and localTime() |
| 463 | * |
| 464 | * @param Parser $parser |
| 465 | * @param PPFrame $frame |
| 466 | * @param string $format |
| 467 | * @param string $date |
| 468 | * @param string $language |
| 469 | * @param string|bool $local |
| 470 | * @return string |
| 471 | */ |
| 472 | private function timeCommon( |
| 473 | Parser $parser, PPFrame $frame, $format, $date, $language, $local |
| 474 | ) { |
| 475 | $this->hookContainer->register( |
| 476 | 'ParserClearState', |
| 477 | static function () { |
| 478 | self::$mTimeChars = 0; |
| 479 | } |
| 480 | ); |
| 481 | |
| 482 | if ( $date === '' ) { |
| 483 | $cacheKey = $parser->getOptions()->getTimestamp(); |
| 484 | $timestamp = new MWTimestamp( $cacheKey ); |
| 485 | $date = $timestamp->getTimestamp( TS_ISO_8601 ); |
| 486 | $useTTL = true; |
| 487 | } else { |
| 488 | $cacheKey = $date; |
| 489 | $useTTL = false; |
| 490 | } |
| 491 | if ( isset( self::$mTimeCache[$format][$cacheKey][$language][$local] ) ) { |
| 492 | $cachedVal = self::$mTimeCache[$format][$cacheKey][$language][$local]; |
| 493 | if ( $useTTL && $cachedVal[1] !== null ) { |
| 494 | $frame->setTTL( $cachedVal[1] ); |
| 495 | } |
| 496 | return $cachedVal[0]; |
| 497 | } |
| 498 | |
| 499 | # compute the timestamp string $ts |
| 500 | # PHP >= 5.2 can handle dates before 1970 or after 2038 using the DateTime object |
| 501 | |
| 502 | $invalidTime = false; |
| 503 | |
| 504 | # the DateTime constructor must be used because it throws exceptions |
| 505 | # when errors occur, whereas date_create appears to just output a warning |
| 506 | # that can't really be detected from within the code |
| 507 | try { |
| 508 | |
| 509 | # Default input timezone is UTC. |
| 510 | $utc = new DateTimeZone( 'UTC' ); |
| 511 | |
| 512 | # Correct for DateTime interpreting 'XXXX' as XX:XX o'clock |
| 513 | if ( preg_match( '/^[0-9]{4}$/', $date ) ) { |
| 514 | $date = '00:00 ' . $date; |
| 515 | } |
| 516 | |
| 517 | # Parse date |
| 518 | # UTC is a default input timezone. |
| 519 | $dateObject = new DateTime( $date, $utc ); |
| 520 | |
| 521 | # Set output timezone. |
| 522 | if ( $local ) { |
| 523 | $tz = new DateTimeZone( |
| 524 | $this->config->get( 'Localtimezone' ) ?? |
| 525 | date_default_timezone_get() |
| 526 | ); |
| 527 | } else { |
| 528 | $tz = $utc; |
| 529 | } |
| 530 | $dateObject->setTimezone( $tz ); |
| 531 | # Generate timestamp |
| 532 | $ts = $dateObject->format( 'YmdHis' ); |
| 533 | |
| 534 | } catch ( TimeoutException $ex ) { |
| 535 | // Unfortunately DateTime throws a generic Exception, but we can't |
| 536 | // ignore an exception generated by the RequestTimeout library. |
| 537 | throw $ex; |
| 538 | } catch ( Exception $ex ) { |
| 539 | $invalidTime = true; |
| 540 | } |
| 541 | |
| 542 | $ttl = null; |
| 543 | # format the timestamp and return the result |
| 544 | if ( $invalidTime ) { |
| 545 | $result = '<strong class="error">' . |
| 546 | wfMessage( 'pfunc_time_error' )->inContentLanguage()->escaped() . |
| 547 | '</strong>'; |
| 548 | } else { |
| 549 | self::$mTimeChars += strlen( $format ); |
| 550 | if ( self::$mTimeChars > self::MAX_TIME_CHARS ) { |
| 551 | return '<strong class="error">' . |
| 552 | wfMessage( 'pfunc_time_too_long' )->inContentLanguage()->escaped() . |
| 553 | '</strong>'; |
| 554 | } |
| 555 | |
| 556 | if ( $ts < 0 ) { // Language can't deal with BC years |
| 557 | return '<strong class="error">' . |
| 558 | wfMessage( 'pfunc_time_too_small' )->inContentLanguage()->escaped() . |
| 559 | '</strong>'; |
| 560 | } |
| 561 | if ( $ts >= 100000000000000 ) { // Language can't deal with years after 9999 |
| 562 | return '<strong class="error">' . |
| 563 | wfMessage( 'pfunc_time_too_big' )->inContentLanguage()->escaped() . |
| 564 | '</strong>'; |
| 565 | } |
| 566 | |
| 567 | if ( $language !== '' && $this->languageNameUtils->isValidBuiltInCode( $language ) ) { |
| 568 | // use whatever language is passed as a parameter |
| 569 | $langObject = $this->languageFactory->getLanguage( $language ); |
| 570 | } else { |
| 571 | // use wiki's content language |
| 572 | $langObject = $parser->getTargetLanguage(); |
| 573 | // $ttl is passed by reference, which doesn't work right on stub objects |
| 574 | StubObject::unstub( $langObject ); |
| 575 | } |
| 576 | $result = $langObject->sprintfDate( $format, $ts, $tz, $ttl ); |
| 577 | } |
| 578 | self::$mTimeCache[$format][$cacheKey][$language][$local] = [ $result, $ttl ]; |
| 579 | if ( $useTTL && $ttl !== null ) { |
| 580 | $frame->setTTL( $ttl ); |
| 581 | } |
| 582 | return $result; |
| 583 | } |
| 584 | |
| 585 | /** |
| 586 | * {{#time: format string }} |
| 587 | * {{#time: format string | date/time object }} |
| 588 | * {{#time: format string | date/time object | language code }} |
| 589 | * |
| 590 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##time |
| 591 | * |
| 592 | * @param Parser $parser |
| 593 | * @param PPFrame $frame |
| 594 | * @param PPNode[] $args |
| 595 | * @return string |
| 596 | */ |
| 597 | public function time( Parser $parser, PPFrame $frame, array $args ) { |
| 598 | $format = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 599 | $date = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : ''; |
| 600 | $language = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : ''; |
| 601 | $local = isset( $args[3] ) && trim( $frame->expand( $args[3] ) ); |
| 602 | return $this->timeCommon( $parser, $frame, $format, $date, $language, $local ); |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * {{#timel: ... }} |
| 607 | * |
| 608 | * Identical to {{#time: ... }}, except that it uses the local time of the wiki |
| 609 | * (as set in $wgLocaltimezone) when no date is given. |
| 610 | * |
| 611 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##timel |
| 612 | * |
| 613 | * @param Parser $parser |
| 614 | * @param PPFrame $frame |
| 615 | * @param PPNode[] $args |
| 616 | * @return string |
| 617 | */ |
| 618 | public function localTime( Parser $parser, PPFrame $frame, array $args ) { |
| 619 | $format = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : ''; |
| 620 | $date = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : ''; |
| 621 | $language = isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : ''; |
| 622 | return $this->timeCommon( $parser, $frame, $format, $date, $language, true ); |
| 623 | } |
| 624 | |
| 625 | /** |
| 626 | * Obtain a specified number of slash-separated parts of a title, |
| 627 | * e.g. {{#titleparts:Hello/World|1}} => "Hello" |
| 628 | * |
| 629 | * @link https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##titleparts |
| 630 | * |
| 631 | * @param Parser $parser Parent parser |
| 632 | * @param string $title Title to split |
| 633 | * @param string|int $parts Number of parts to keep |
| 634 | * @param string|int $offset Offset starting at 1 |
| 635 | * @return string |
| 636 | */ |
| 637 | public function titleparts( Parser $parser, $title = '', $parts = 0, $offset = 0 ) { |
| 638 | $parts = (int)$parts; |
| 639 | $offset = (int)$offset; |
| 640 | $ntitle = Title::newFromText( $title ); |
| 641 | if ( !$ntitle ) { |
| 642 | return $title; |
| 643 | } |
| 644 | |
| 645 | $bits = explode( '/', $ntitle->getPrefixedText(), 25 ); |
| 646 | if ( $offset > 0 ) { |
| 647 | --$offset; |
| 648 | } |
| 649 | return implode( '/', array_slice( $bits, $offset, $parts ?: null ) ); |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * Verifies parameter is less than max string length. |
| 654 | * |
| 655 | * @param string $text |
| 656 | * @return bool |
| 657 | */ |
| 658 | private function checkLength( $text ) { |
| 659 | return ( mb_strlen( $text ) < $this->config->get( 'PFStringLengthLimit' ) ); |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * Generates error message. Called when string is too long. |
| 664 | * @return string |
| 665 | */ |
| 666 | private function tooLongError() { |
| 667 | $msg = wfMessage( 'pfunc_string_too_long' ) |
| 668 | ->numParams( $this->config->get( 'PFStringLengthLimit' ) ); |
| 669 | return '<strong class="error">' . $msg->inContentLanguage()->escaped() . '</strong>'; |
| 670 | } |
| 671 | |
| 672 | /** |
| 673 | * {{#len:string}} |
| 674 | * |
| 675 | * Reports number of characters in string. |
| 676 | * |
| 677 | * @param Parser $parser |
| 678 | * @param string $inStr |
| 679 | * @return int |
| 680 | */ |
| 681 | public function runLen( Parser $parser, $inStr = '' ) { |
| 682 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 683 | return mb_strlen( $inStr ); |
| 684 | } |
| 685 | |
| 686 | /** |
| 687 | * {{#pos: string | needle | offset}} |
| 688 | * |
| 689 | * Finds first occurrence of "needle" in "string" starting at "offset". |
| 690 | * |
| 691 | * Note: If the needle is an empty string, single space is used instead. |
| 692 | * Note: If the needle is not found, empty string is returned. |
| 693 | * @param Parser $parser |
| 694 | * @param string $inStr |
| 695 | * @param string $inNeedle |
| 696 | * @param string|int $inOffset |
| 697 | * @return int|string |
| 698 | */ |
| 699 | public function runPos( Parser $parser, $inStr = '', $inNeedle = '', $inOffset = 0 ) { |
| 700 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 701 | $inNeedle = $parser->killMarkers( (string)$inNeedle ); |
| 702 | |
| 703 | if ( !$this->checkLength( $inStr ) || |
| 704 | !$this->checkLength( $inNeedle ) ) { |
| 705 | return $this->tooLongError(); |
| 706 | } |
| 707 | |
| 708 | if ( $inNeedle === '' ) { |
| 709 | $inNeedle = ' '; |
| 710 | } |
| 711 | |
| 712 | $pos = mb_strpos( $inStr, $inNeedle, min( (int)$inOffset, mb_strlen( $inStr ) ) ); |
| 713 | if ( $pos === false ) { |
| 714 | $pos = ''; |
| 715 | } |
| 716 | |
| 717 | return $pos; |
| 718 | } |
| 719 | |
| 720 | /** |
| 721 | * {{#rpos: string | needle}} |
| 722 | * |
| 723 | * Finds last occurrence of "needle" in "string". |
| 724 | * |
| 725 | * Note: If the needle is an empty string, single space is used instead. |
| 726 | * Note: If the needle is not found, -1 is returned. |
| 727 | * @param Parser $parser |
| 728 | * @param string $inStr |
| 729 | * @param string $inNeedle |
| 730 | * @return int|string |
| 731 | */ |
| 732 | public function runRPos( Parser $parser, $inStr = '', $inNeedle = '' ) { |
| 733 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 734 | $inNeedle = $parser->killMarkers( (string)$inNeedle ); |
| 735 | |
| 736 | if ( !$this->checkLength( $inStr ) || |
| 737 | !$this->checkLength( $inNeedle ) ) { |
| 738 | return $this->tooLongError(); |
| 739 | } |
| 740 | |
| 741 | if ( $inNeedle === '' ) { |
| 742 | $inNeedle = ' '; |
| 743 | } |
| 744 | |
| 745 | $pos = mb_strrpos( $inStr, $inNeedle ); |
| 746 | if ( $pos === false ) { |
| 747 | $pos = -1; |
| 748 | } |
| 749 | |
| 750 | return $pos; |
| 751 | } |
| 752 | |
| 753 | /** |
| 754 | * {{#sub: string | start | length }} |
| 755 | * |
| 756 | * Returns substring of "string" starting at "start" and having |
| 757 | * "length" characters. |
| 758 | * |
| 759 | * Note: If length is zero, the rest of the input is returned. |
| 760 | * Note: A negative value for "start" operates from the end of the |
| 761 | * "string". |
| 762 | * Note: A negative value for "length" returns a string reduced in |
| 763 | * length by that amount. |
| 764 | * |
| 765 | * @param Parser $parser |
| 766 | * @param string $inStr |
| 767 | * @param string|int $inStart |
| 768 | * @param string|int $inLength |
| 769 | * @return string |
| 770 | */ |
| 771 | public function runSub( Parser $parser, $inStr = '', $inStart = 0, $inLength = 0 ) { |
| 772 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 773 | |
| 774 | if ( !$this->checkLength( $inStr ) ) { |
| 775 | return $this->tooLongError(); |
| 776 | } |
| 777 | |
| 778 | if ( (int)$inLength === 0 ) { |
| 779 | $result = mb_substr( $inStr, (int)$inStart ); |
| 780 | } else { |
| 781 | $result = mb_substr( $inStr, (int)$inStart, (int)$inLength ); |
| 782 | } |
| 783 | |
| 784 | return $result; |
| 785 | } |
| 786 | |
| 787 | /** |
| 788 | * {{#count: string | substr }} |
| 789 | * |
| 790 | * Returns number of occurrences of "substr" in "string". |
| 791 | * |
| 792 | * Note: If "substr" is empty, a single space is used. |
| 793 | * |
| 794 | * @param Parser $parser |
| 795 | * @param string $inStr |
| 796 | * @param string $inSubStr |
| 797 | * @return int|string |
| 798 | */ |
| 799 | public function runCount( Parser $parser, $inStr = '', $inSubStr = '' ) { |
| 800 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 801 | $inSubStr = $parser->killMarkers( (string)$inSubStr ); |
| 802 | |
| 803 | if ( !$this->checkLength( $inStr ) || |
| 804 | !$this->checkLength( $inSubStr ) ) { |
| 805 | return $this->tooLongError(); |
| 806 | } |
| 807 | |
| 808 | if ( $inSubStr === '' ) { |
| 809 | $inSubStr = ' '; |
| 810 | } |
| 811 | |
| 812 | $result = mb_substr_count( $inStr, $inSubStr ); |
| 813 | |
| 814 | return $result; |
| 815 | } |
| 816 | |
| 817 | /** |
| 818 | * {{#replace:string | from | to | limit }} |
| 819 | * |
| 820 | * Replaces each occurrence of "from" in "string" with "to". |
| 821 | * At most "limit" replacements are performed. |
| 822 | * |
| 823 | * Note: Armored against replacements that would generate huge strings. |
| 824 | * Note: If "from" is an empty string, single space is used instead. |
| 825 | * |
| 826 | * @param Parser $parser |
| 827 | * @param string $inStr |
| 828 | * @param string $inReplaceFrom |
| 829 | * @param string $inReplaceTo |
| 830 | * @param string|int $inLimit |
| 831 | * @return string |
| 832 | */ |
| 833 | public function runReplace( Parser $parser, $inStr = '', |
| 834 | $inReplaceFrom = '', $inReplaceTo = '', $inLimit = -1 ) { |
| 835 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 836 | $inReplaceFrom = $parser->killMarkers( (string)$inReplaceFrom ); |
| 837 | $inReplaceTo = $parser->killMarkers( (string)$inReplaceTo ); |
| 838 | |
| 839 | if ( !$this->checkLength( $inStr ) || |
| 840 | !$this->checkLength( $inReplaceFrom ) || |
| 841 | !$this->checkLength( $inReplaceTo ) ) { |
| 842 | return $this->tooLongError(); |
| 843 | } |
| 844 | |
| 845 | if ( $inReplaceFrom === '' ) { |
| 846 | $inReplaceFrom = ' '; |
| 847 | } |
| 848 | |
| 849 | // Precompute limit to avoid generating enormous string: |
| 850 | $diff = mb_strlen( $inReplaceTo ) - mb_strlen( $inReplaceFrom ); |
| 851 | if ( $diff > 0 ) { |
| 852 | $limit = (int)( ( $this->config->get( 'PFStringLengthLimit' ) - mb_strlen( $inStr ) ) / $diff ) + 1; |
| 853 | } else { |
| 854 | $limit = -1; |
| 855 | } |
| 856 | |
| 857 | $inLimit = (int)$inLimit; |
| 858 | if ( $inLimit >= 0 ) { |
| 859 | if ( $limit > $inLimit || $limit == -1 ) { |
| 860 | $limit = $inLimit; |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | // Use regex to allow limit and handle UTF-8 correctly. |
| 865 | $inReplaceFrom = preg_quote( $inReplaceFrom, '/' ); |
| 866 | $inReplaceTo = StringUtils::escapeRegexReplacement( $inReplaceTo ); |
| 867 | |
| 868 | $result = preg_replace( '/' . $inReplaceFrom . '/u', |
| 869 | $inReplaceTo, $inStr, $limit ); |
| 870 | |
| 871 | if ( !$this->checkLength( $result ) ) { |
| 872 | return $this->tooLongError(); |
| 873 | } |
| 874 | |
| 875 | return $result; |
| 876 | } |
| 877 | |
| 878 | /** |
| 879 | * {{#explode:string | delimiter | position | limit}} |
| 880 | * |
| 881 | * Breaks "string" into chunks separated by "delimiter" and returns the |
| 882 | * chunk identified by "position". |
| 883 | * |
| 884 | * Note: Negative position can be used to specify tokens from the end. |
| 885 | * Note: If the divider is an empty string, single space is used instead. |
| 886 | * Note: Empty string is returned if there are not enough exploded chunks. |
| 887 | * |
| 888 | * @param Parser $parser |
| 889 | * @param string $inStr |
| 890 | * @param string $inDiv |
| 891 | * @param string|int $inPos |
| 892 | * @param string|null $inLim |
| 893 | * @return string |
| 894 | */ |
| 895 | public function runExplode( |
| 896 | Parser $parser, $inStr = '', $inDiv = '', $inPos = 0, $inLim = null |
| 897 | ) { |
| 898 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 899 | $inDiv = $parser->killMarkers( (string)$inDiv ); |
| 900 | |
| 901 | if ( $inDiv === '' ) { |
| 902 | $inDiv = ' '; |
| 903 | } |
| 904 | |
| 905 | if ( !$this->checkLength( $inStr ) || |
| 906 | !$this->checkLength( $inDiv ) ) { |
| 907 | return $this->tooLongError(); |
| 908 | } |
| 909 | |
| 910 | $inDiv = preg_quote( $inDiv, '/' ); |
| 911 | |
| 912 | $matches = preg_split( '/' . $inDiv . '/u', $inStr, (int)$inLim ); |
| 913 | |
| 914 | if ( $inPos >= 0 && isset( $matches[$inPos] ) ) { |
| 915 | $result = $matches[$inPos]; |
| 916 | } elseif ( $inPos < 0 && isset( $matches[count( $matches ) + $inPos] ) ) { |
| 917 | $result = $matches[count( $matches ) + $inPos]; |
| 918 | } else { |
| 919 | $result = ''; |
| 920 | } |
| 921 | |
| 922 | return $result; |
| 923 | } |
| 924 | |
| 925 | /** |
| 926 | * {{#urldecode:string}} |
| 927 | * |
| 928 | * Decodes URL-encoded (like%20that) strings. |
| 929 | * |
| 930 | * @param Parser $parser |
| 931 | * @param string $inStr |
| 932 | * @return string |
| 933 | */ |
| 934 | public function runUrlDecode( Parser $parser, $inStr = '' ) { |
| 935 | $inStr = $parser->killMarkers( (string)$inStr ); |
| 936 | if ( !$this->checkLength( $inStr ) ) { |
| 937 | return $this->tooLongError(); |
| 938 | } |
| 939 | |
| 940 | return urldecode( $inStr ); |
| 941 | } |
| 942 | |
| 943 | /** |
| 944 | * Take a PPNode (-ish thing), expand it, remove entities, and trim. |
| 945 | * |
| 946 | * For use when doing string comparisions, where user expects entities |
| 947 | * to be equal for what they stand for (e.g. comparisions with {{PAGENAME}}) |
| 948 | * |
| 949 | * @param PPNode|string $obj Thing to expand |
| 950 | * @param PPFrame $frame |
| 951 | * @param string &$trimExpanded @phan-output-reference Expanded and trimmed version of PPNode, |
| 952 | * but with char refs intact |
| 953 | * @return string The trimmed, expanded and entity reference decoded version of the PPNode |
| 954 | */ |
| 955 | private static function decodeTrimExpand( $obj, PPFrame $frame, &$trimExpanded = '' ) { |
| 956 | $expanded = $frame->expand( $obj ); |
| 957 | $trimExpanded = trim( $expanded ); |
| 958 | return trim( Sanitizer::decodeCharReferences( $expanded ) ); |
| 959 | } |
| 960 | } |