3 * Fetching and processing of interface messages.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
21 * @author Niklas Laxström
24 use MediaWiki\Logger\LoggerFactory
;
25 use MediaWiki\MediaWikiServices
;
28 * The Message class provides methods which fulfil two basic services:
29 * - fetching interface messages
30 * - processing messages into a variety of formats
32 * First implemented with MediaWiki 1.17, the Message class is intended to
33 * replace the old wfMsg* functions that over time grew unusable.
34 * @see https://www.mediawiki.org/wiki/Manual:Messages_API for equivalences
35 * between old and new functions.
37 * You should use the wfMessage() global function which acts as a wrapper for
38 * the Message class. The wrapper let you pass parameters as arguments.
40 * The most basic usage cases would be:
43 * // Initialize a Message object using the 'some_key' message key
44 * $message = wfMessage( 'some_key' );
46 * // Using two parameters those values are strings 'value1' and 'value2':
47 * $message = wfMessage( 'some_key',
52 * @section message_global_fn Global function wrapper:
54 * Since wfMessage() returns a Message instance, you can chain its call with
55 * a method. Some of them return a Message instance too so you can chain them.
56 * You will find below several examples of wfMessage() usage.
58 * Fetching a message text for interface message:
61 * $button = Xml::button(
62 * wfMessage( 'submit' )->text()
66 * A Message instance can be passed parameters after it has been constructed,
67 * use the params() method to do so:
70 * wfMessage( 'welcome-to' )
71 * ->params( $wgSitename )
75 * {{GRAMMAR}} and friends work correctly:
78 * wfMessage( 'are-friends',
81 * wfMessage( 'bad-message' )
82 * ->rawParams( '<script>...</script>' )
86 * @section message_language Changing language:
88 * Messages can be requested in a different language or in whatever current
89 * content language is being used. The methods are:
90 * - Message->inContentLanguage()
91 * - Message->inLanguage()
93 * Sometimes the message text ends up in the database, so content language is
97 * wfMessage( 'file-log',
99 * )->inContentLanguage()->text();
102 * Checking whether a message exists:
105 * wfMessage( 'mysterious-message' )->exists()
106 * // returns a boolean whether the 'mysterious-message' key exist.
109 * If you want to use a different language:
112 * $userLanguage = $user->getOption( 'language' );
113 * wfMessage( 'email-header' )
114 * ->inLanguage( $userLanguage )
118 * @note You can parse the text only in the content or interface languages
120 * @section message_compare_old Comparison with old wfMsg* functions:
126 * wfMsgExt( 'key', [ 'parseinline' ], 'apple' );
128 * wfMessage( 'key', 'apple' )->parse();
131 * Parseinline is used because it is more useful when pre-building HTML.
132 * In normal use it is better to use OutputPage::(add|wrap)WikiMsg.
134 * Places where HTML cannot be used. {{-transformation is done.
137 * wfMsgExt( 'key', [ 'parsemag' ], 'apple', 'pear' );
139 * wfMessage( 'key', 'apple', 'pear' )->text();
142 * Shortcut for escaping the message too, similar to wfMsgHTML(), but
143 * parameters are not replaced after escaping by default.
145 * $escaped = wfMessage( 'key' )
146 * ->rawParams( 'apple' )
150 * @section message_appendix Appendix:
153 * - test, can we have tests?
154 * - this documentation needs to be extended
156 * @see https://www.mediawiki.org/wiki/WfMessage()
157 * @see https://www.mediawiki.org/wiki/New_messages_API
158 * @see https://www.mediawiki.org/wiki/Localisation
161 * @phan-file-suppress PhanCommentParamOnEmptyParamList Cannot make variadic due to HHVM bug,
164 class Message
implements MessageSpecifier
, Serializable
{
165 /** Use message text as-is */
166 const FORMAT_PLAIN
= 'plain';
167 /** Use normal wikitext -> HTML parsing (the result will be wrapped in a block-level HTML tag) */
168 const FORMAT_BLOCK_PARSE
= 'block-parse';
169 /** Use normal wikitext -> HTML parsing but strip the block-level wrapper */
170 const FORMAT_PARSE
= 'parse';
171 /** Transform {{..}} constructs but don't transform to HTML */
172 const FORMAT_TEXT
= 'text';
173 /** Transform {{..}} constructs, HTML-escape the result */
174 const FORMAT_ESCAPED
= 'escaped';
177 * Mapping from Message::listParam() types to Language methods.
180 protected static $listTypeMap = [
181 'comma' => 'commaList',
182 'semicolon' => 'semicolonList',
183 'pipe' => 'pipeList',
184 'text' => 'listToText',
188 * In which language to get this message. True, which is the default,
189 * means the current user language, false content language.
193 protected $interface = true;
196 * In which language to get this message. Overrides the $interface setting.
198 * @var Language|bool Explicit language object, or false for user language
200 protected $language = false;
203 * @var string The message key. If $keysToTry has more than one element,
204 * this may change to one of the keys to try when fetching the message text.
209 * @var string[] List of keys to try when fetching the message.
211 protected $keysToTry;
214 * @var array List of parameters which will be substituted into the message.
216 protected $parameters = [];
222 protected $format = 'parse';
225 * @var bool Whether database can be used.
227 protected $useDatabase = true;
230 * @var Title Title object to use as context.
232 protected $title = null;
235 * @var Content Content object representing the message.
237 protected $content = null;
246 * @param string|string[]|MessageSpecifier $key Message key, or array of
247 * message keys to try and use the first non-empty message for, or a
248 * MessageSpecifier to copy from.
249 * @param array $params Message parameters.
250 * @param Language|null $language [optional] Language to use (defaults to current user language).
251 * @throws InvalidArgumentException
253 public function __construct( $key, $params = [], Language
$language = null ) {
254 if ( $key instanceof MessageSpecifier
) {
256 throw new InvalidArgumentException(
257 '$params must be empty if $key is a MessageSpecifier'
260 $params = $key->getParams();
261 $key = $key->getKey();
264 if ( !is_string( $key ) && !is_array( $key ) ) {
265 throw new InvalidArgumentException( '$key must be a string or an array' );
268 $this->keysToTry
= (array)$key;
270 if ( empty( $this->keysToTry
) ) {
271 throw new InvalidArgumentException( '$key must not be an empty list' );
274 $this->key
= reset( $this->keysToTry
);
276 $this->parameters
= array_values( $params );
277 // User language is only resolved in getLanguage(). This helps preserve the
278 // semantic intent of "user language" across serialize() and unserialize().
279 $this->language
= $language ?
: false;
283 * @see Serializable::serialize()
287 public function serialize() {
289 'interface' => $this->interface,
290 'language' => $this->language ?
$this->language
->getCode() : false,
292 'keysToTry' => $this->keysToTry
,
293 'parameters' => $this->parameters
,
294 'format' => $this->format
,
295 'useDatabase' => $this->useDatabase
,
296 'titlestr' => $this->title ?
$this->title
->getFullText() : null,
301 * @see Serializable::unserialize()
303 * @param string $serialized
305 public function unserialize( $serialized ) {
306 $data = unserialize( $serialized );
307 if ( !is_array( $data ) ) {
308 throw new InvalidArgumentException( __METHOD__
. ': Invalid serialized data' );
311 $this->interface = $data['interface'];
312 $this->key
= $data['key'];
313 $this->keysToTry
= $data['keysToTry'];
314 $this->parameters
= $data['parameters'];
315 $this->format
= $data['format'];
316 $this->useDatabase
= $data['useDatabase'];
317 $this->language
= $data['language'] ? Language
::factory( $data['language'] ) : false;
319 if ( isset( $data['titlestr'] ) ) {
320 $this->title
= Title
::newFromText( $data['titlestr'] );
321 } elseif ( isset( $data['title'] ) && $data['title'] instanceof Title
) {
322 // Old serializations from before December 2018
323 $this->title
= $data['title'];
325 $this->title
= null; // Explicit for sanity
332 * @return bool True if this is a multi-key message, that is, if the key provided to the
333 * constructor was a fallback list of keys to try.
335 public function isMultiKey() {
336 return count( $this->keysToTry
) > 1;
342 * @return string[] The list of keys to try when fetching the message text,
343 * in order of preference.
345 public function getKeysToTry() {
346 return $this->keysToTry
;
350 * Returns the message key.
352 * If a list of multiple possible keys was supplied to the constructor, this method may
353 * return any of these keys. After the message has been fetched, this method will return
354 * the key that was actually used to fetch the message.
360 public function getKey() {
365 * Returns the message parameters.
371 public function getParams() {
372 return $this->parameters
;
376 * Returns the message format.
381 * @deprecated since 1.29 formatting is not stateful
383 public function getFormat() {
384 wfDeprecated( __METHOD__
, '1.29' );
385 return $this->format
;
389 * Returns the Language of the Message.
395 public function getLanguage() {
396 // Defaults to false which means current user language
397 return $this->language ?
: RequestContext
::getMain()->getLanguage();
401 * Factory function that is just wrapper for the real constructor. It is
402 * intended to be used instead of the real constructor, because it allows
403 * chaining method calls, while new objects don't.
407 * @param string|string[]|MessageSpecifier $key
408 * @param mixed $param,... Parameters as strings.
412 public static function newFromKey( $key /*...*/ ) {
413 $params = func_get_args();
414 array_shift( $params );
415 return new self( $key, $params );
419 * Transform a MessageSpecifier or a primitive value used interchangeably with
420 * specifiers (a message key string, or a key + params array) into a proper Message.
422 * Also accepts a MessageSpecifier inside an array: that's not considered a valid format
423 * but is an easy error to make due to how StatusValue stores messages internally.
424 * Further array elements are ignored in that case.
426 * @param string|array|MessageSpecifier $value
428 * @throws InvalidArgumentException
431 public static function newFromSpecifier( $value ) {
433 if ( is_array( $value ) ) {
435 $value = array_shift( $params );
438 if ( $value instanceof Message
) { // Message, RawMessage, ApiMessage, etc
439 $message = clone $value;
440 } elseif ( $value instanceof MessageSpecifier
) {
441 $message = new Message( $value );
442 } elseif ( is_string( $value ) ) {
443 $message = new Message( $value, $params );
445 throw new InvalidArgumentException( __METHOD__
. ': invalid argument type '
446 . gettype( $value ) );
453 * Factory function accepting multiple message keys and returning a message instance
454 * for the first message which is non-empty. If all messages are empty then an
455 * instance of the first message key is returned.
459 * @param string|string[] $keys,... Message keys, or first argument as an array of all the
464 public static function newFallbackSequence( /*...*/ ) {
465 $keys = func_get_args();
466 if ( func_num_args() == 1 ) {
467 if ( is_array( $keys[0] ) ) {
468 // Allow an array to be passed as the first argument instead
469 $keys = array_values( $keys[0] );
471 // Optimize a single string to not need special fallback handling
475 return new self( $keys );
479 * Get a title object for a mediawiki message, where it can be found in the mediawiki namespace.
480 * The title will be for the current language, if the message key is in
481 * $wgForceUIMsgAsContentMsg it will be append with the language code (except content
482 * language), because Message::inContentLanguage will also return in user language.
484 * @see $wgForceUIMsgAsContentMsg
488 public function getTitle() {
489 global $wgForceUIMsgAsContentMsg;
491 $contLang = MediaWikiServices
::getInstance()->getContentLanguage();
492 $lang = $this->getLanguage();
495 !$lang->equals( $contLang )
496 && in_array( $this->key
, (array)$wgForceUIMsgAsContentMsg )
498 $title .= '/' . $lang->getCode();
501 return Title
::makeTitle(
502 NS_MEDIAWIKI
, $contLang->ucfirst( strtr( $title, ' ', '_' ) ) );
506 * Adds parameters to the parameter list of this message.
510 * @param mixed $args,... Parameters as strings or arrays from
511 * Message::numParam() and the like, or a single array of parameters.
513 * @return Message $this
515 public function params( /*...*/ ) {
516 $args = func_get_args();
518 // If $args has only one entry and it's an array, then it's either a
519 // non-varargs call or it happens to be a call with just a single
520 // "special" parameter. Since the "special" parameters don't have any
521 // numeric keys, we'll test that to differentiate the cases.
522 if ( count( $args ) === 1 && isset( $args[0] ) && is_array( $args[0] ) ) {
523 if ( $args[0] === [] ) {
526 foreach ( $args[0] as $key => $value ) {
527 if ( is_int( $key ) ) {
535 $this->parameters
= array_merge( $this->parameters
, array_values( $args ) );
540 * Add parameters that are substituted after parsing or escaping.
541 * In other words the parsing process cannot access the contents
542 * of this type of parameter, and you need to make sure it is
543 * sanitized beforehand. The parser will see "$n", instead.
547 * @param mixed $params,... Raw parameters as strings, or a single argument that is
548 * an array of raw parameters.
550 * @return Message $this
552 public function rawParams( /*...*/ ) {
553 $params = func_get_args();
554 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
555 $params = $params[0];
557 foreach ( $params as $param ) {
558 $this->parameters
[] = self
::rawParam( $param );
564 * Add parameters that are numeric and will be passed through
565 * Language::formatNum before substitution
569 * @param mixed $param,... Numeric parameters, or a single argument that is
570 * an array of numeric parameters.
572 * @return Message $this
574 public function numParams( /*...*/ ) {
575 $params = func_get_args();
576 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
577 $params = $params[0];
579 foreach ( $params as $param ) {
580 $this->parameters
[] = self
::numParam( $param );
586 * Add parameters that are durations of time and will be passed through
587 * Language::formatDuration before substitution
591 * @param int|int[] $param,... Duration parameters, or a single argument that is
592 * an array of duration parameters.
594 * @return Message $this
596 public function durationParams( /*...*/ ) {
597 $params = func_get_args();
598 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
599 $params = $params[0];
601 foreach ( $params as $param ) {
602 $this->parameters
[] = self
::durationParam( $param );
608 * Add parameters that are expiration times and will be passed through
609 * Language::formatExpiry before substitution
613 * @param string|string[] $param,... Expiry parameters, or a single argument that is
614 * an array of expiry parameters.
616 * @return Message $this
618 public function expiryParams( /*...*/ ) {
619 $params = func_get_args();
620 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
621 $params = $params[0];
623 foreach ( $params as $param ) {
624 $this->parameters
[] = self
::expiryParam( $param );
630 * Add parameters that are time periods and will be passed through
631 * Language::formatTimePeriod before substitution
635 * @param int|int[] $param,... Time period parameters, or a single argument that is
636 * an array of time period parameters.
638 * @return Message $this
640 public function timeperiodParams( /*...*/ ) {
641 $params = func_get_args();
642 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
643 $params = $params[0];
645 foreach ( $params as $param ) {
646 $this->parameters
[] = self
::timeperiodParam( $param );
652 * Add parameters that are file sizes and will be passed through
653 * Language::formatSize before substitution
657 * @param int|int[] $param,... Size parameters, or a single argument that is
658 * an array of size parameters.
660 * @return Message $this
662 public function sizeParams( /*...*/ ) {
663 $params = func_get_args();
664 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
665 $params = $params[0];
667 foreach ( $params as $param ) {
668 $this->parameters
[] = self
::sizeParam( $param );
674 * Add parameters that are bitrates and will be passed through
675 * Language::formatBitrate before substitution
679 * @param int|int[] $param,... Bit rate parameters, or a single argument that is
680 * an array of bit rate parameters.
682 * @return Message $this
684 public function bitrateParams( /*...*/ ) {
685 $params = func_get_args();
686 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
687 $params = $params[0];
689 foreach ( $params as $param ) {
690 $this->parameters
[] = self
::bitrateParam( $param );
696 * Add parameters that are plaintext and will be passed through without
697 * the content being evaluated. Plaintext parameters are not valid as
698 * arguments to parser functions. This differs from self::rawParams in
699 * that the Message class handles escaping to match the output format.
703 * @param string|string[] $param,... plaintext parameters, or a single argument that is
704 * an array of plaintext parameters.
706 * @return Message $this
708 public function plaintextParams( /*...*/ ) {
709 $params = func_get_args();
710 if ( isset( $params[0] ) && is_array( $params[0] ) ) {
711 $params = $params[0];
713 foreach ( $params as $param ) {
714 $this->parameters
[] = self
::plaintextParam( $param );
720 * Set the language and the title from a context object
724 * @param IContextSource $context
726 * @return Message $this
728 public function setContext( IContextSource
$context ) {
729 $this->inLanguage( $context->getLanguage() );
730 $this->title( $context->getTitle() );
731 $this->interface = true;
737 * Request the message in any language that is supported.
739 * As a side effect interface message status is unconditionally
743 * @param Language|string $lang Language code or Language object.
744 * @return Message $this
745 * @throws MWException
747 public function inLanguage( $lang ) {
748 $previousLanguage = $this->language
;
750 if ( $lang instanceof Language
) {
751 $this->language
= $lang;
752 } elseif ( is_string( $lang ) ) {
753 if ( !$this->language
instanceof Language ||
$this->language
->getCode() != $lang ) {
754 $this->language
= Language
::factory( $lang );
756 } elseif ( $lang instanceof StubUserLang
) {
757 $this->language
= false;
759 $type = gettype( $lang );
760 throw new MWException( __METHOD__
. " must be "
761 . "passed a String or Language object; $type given"
765 if ( $this->language
!== $previousLanguage ) {
766 // The language has changed. Clear the message cache.
767 $this->message
= null;
769 $this->interface = false;
774 * Request the message in the wiki's content language,
775 * unless it is disabled for this message.
778 * @see $wgForceUIMsgAsContentMsg
780 * @return Message $this
782 public function inContentLanguage() {
783 global $wgForceUIMsgAsContentMsg;
784 if ( in_array( $this->key
, (array)$wgForceUIMsgAsContentMsg ) ) {
788 $this->inLanguage( MediaWikiServices
::getInstance()->getContentLanguage() );
793 * Allows manipulating the interface message flag directly.
794 * Can be used to restore the flag after setting a language.
798 * @param bool $interface
800 * @return Message $this
802 public function setInterfaceMessageFlag( $interface ) {
803 $this->interface = (bool)$interface;
808 * Enable or disable database use.
812 * @param bool $useDatabase
814 * @return Message $this
816 public function useDatabase( $useDatabase ) {
817 $this->useDatabase
= (bool)$useDatabase;
818 $this->message
= null;
823 * Set the Title object to use as context when transforming the message
827 * @param Title $title
829 * @return Message $this
831 public function title( $title ) {
832 $this->title
= $title;
837 * Returns the message as a Content object.
841 public function content() {
842 if ( !$this->content
) {
843 $this->content
= new MessageContent( $this );
846 return $this->content
;
850 * Returns the message parsed from wikitext to HTML.
854 * @param string|null $format One of the FORMAT_* constants. Null means use whatever was used
855 * the last time (this is for B/C and should be avoided).
857 * @return string HTML
858 * @suppress SecurityCheck-DoubleEscaped phan false positive
860 public function toString( $format = null ) {
861 if ( $format === null ) {
862 $ex = new LogicException( __METHOD__
. ' using implicit format: ' . $this->format
);
863 LoggerFactory
::getInstance( 'message-format' )->warning(
864 $ex->getMessage(), [ 'exception' => $ex, 'format' => $this->format
, 'key' => $this->key
] );
865 $format = $this->format
;
867 $string = $this->fetchMessage();
869 if ( $string === false ) {
870 // Err on the side of safety, ensure that the output
871 // is always html safe in the event the message key is
872 // missing, since in that case its highly likely the
873 // message key is user-controlled.
874 // '⧼' is used instead of '<' to side-step any
875 // double-escaping issues.
876 // (Keep synchronised with mw.Message#toString in JS.)
877 return '⧼' . htmlspecialchars( $this->key
) . '⧽';
880 # Replace $* with a list of parameters for &uselang=qqx.
881 if ( strpos( $string, '$*' ) !== false ) {
883 if ( $this->parameters
!== [] ) {
884 $paramlist = ': $' . implode( ', $', range( 1, count( $this->parameters
) ) );
886 $string = str_replace( '$*', $paramlist, $string );
889 # Replace parameters before text parsing
890 $string = $this->replaceParameters( $string, 'before', $format );
892 # Maybe transform using the full parser
893 if ( $format === self
::FORMAT_PARSE
) {
894 $string = $this->parseText( $string );
895 $string = Parser
::stripOuterParagraph( $string );
896 } elseif ( $format === self
::FORMAT_BLOCK_PARSE
) {
897 $string = $this->parseText( $string );
898 } elseif ( $format === self
::FORMAT_TEXT
) {
899 $string = $this->transformText( $string );
900 } elseif ( $format === self
::FORMAT_ESCAPED
) {
901 $string = $this->transformText( $string );
902 $string = htmlspecialchars( $string, ENT_QUOTES
, 'UTF-8', false );
905 # Raw parameter replacement
906 $string = $this->replaceParameters( $string, 'after', $format );
912 * Magic method implementation of the above (for PHP >= 5.2.0), so we can do, eg:
913 * $foo = new Message( $key );
914 * $string = "<abbr>$foo</abbr>";
920 public function __toString() {
921 // PHP doesn't allow __toString to throw exceptions and will
922 // trigger a fatal error if it does. So, catch any exceptions.
925 return $this->toString( self
::FORMAT_PARSE
);
926 } catch ( Exception
$ex ) {
928 trigger_error( "Exception caught in " . __METHOD__
. " (message " . $this->key
. "): "
929 . $ex, E_USER_WARNING
);
930 } catch ( Exception
$ex ) {
931 // Doh! Cause a fatal error after all?
934 return '⧼' . htmlspecialchars( $this->key
) . '⧽';
939 * Fully parse the text from wikitext to HTML.
943 * @return string Parsed HTML.
945 public function parse() {
946 $this->format
= self
::FORMAT_PARSE
;
947 return $this->toString( self
::FORMAT_PARSE
);
951 * Returns the message text. {{-transformation is done.
955 * @return string Unescaped message text.
957 public function text() {
958 $this->format
= self
::FORMAT_TEXT
;
959 return $this->toString( self
::FORMAT_TEXT
);
963 * Returns the message text as-is, only parameters are substituted.
967 * @return string Unescaped untransformed message text.
969 public function plain() {
970 $this->format
= self
::FORMAT_PLAIN
;
971 return $this->toString( self
::FORMAT_PLAIN
);
975 * Returns the parsed message text which is always surrounded by a block element.
979 * @return string HTML
981 public function parseAsBlock() {
982 $this->format
= self
::FORMAT_BLOCK_PARSE
;
983 return $this->toString( self
::FORMAT_BLOCK_PARSE
);
987 * Returns the message text. {{-transformation is done and the result
988 * is escaped excluding any raw parameters.
992 * @return string Escaped message text.
994 public function escaped() {
995 $this->format
= self
::FORMAT_ESCAPED
;
996 return $this->toString( self
::FORMAT_ESCAPED
);
1000 * Check whether a message key has been defined currently.
1006 public function exists() {
1007 return $this->fetchMessage() !== false;
1011 * Check whether a message does not exist, or is an empty string
1014 * @todo FIXME: Merge with isDisabled()?
1018 public function isBlank() {
1019 $message = $this->fetchMessage();
1020 return $message === false ||
$message === '';
1024 * Check whether a message does not exist, is an empty string, or is "-".
1030 public function isDisabled() {
1031 $message = $this->fetchMessage();
1032 return $message === false ||
$message === '' ||
$message === '-';
1040 * @return array Array with a single "raw" key.
1042 public static function rawParam( $raw ) {
1043 return [ 'raw' => $raw ];
1051 * @return array Array with a single "num" key.
1053 public static function numParam( $num ) {
1054 return [ 'num' => $num ];
1060 * @param int $duration
1062 * @return int[] Array with a single "duration" key.
1064 public static function durationParam( $duration ) {
1065 return [ 'duration' => $duration ];
1071 * @param string $expiry
1073 * @return string[] Array with a single "expiry" key.
1075 public static function expiryParam( $expiry ) {
1076 return [ 'expiry' => $expiry ];
1082 * @param int $period
1084 * @return int[] Array with a single "period" key.
1086 public static function timeperiodParam( $period ) {
1087 return [ 'period' => $period ];
1095 * @return int[] Array with a single "size" key.
1097 public static function sizeParam( $size ) {
1098 return [ 'size' => $size ];
1104 * @param int $bitrate
1106 * @return int[] Array with a single "bitrate" key.
1108 public static function bitrateParam( $bitrate ) {
1109 return [ 'bitrate' => $bitrate ];
1115 * @param string $plaintext
1117 * @return string[] Array with a single "plaintext" key.
1119 public static function plaintextParam( $plaintext ) {
1120 return [ 'plaintext' => $plaintext ];
1126 * @param array $list
1127 * @param string $type 'comma', 'semicolon', 'pipe', 'text'
1128 * @return array Array with "list" and "type" keys.
1130 public static function listParam( array $list, $type = 'text' ) {
1131 if ( !isset( self
::$listTypeMap[$type] ) ) {
1132 throw new InvalidArgumentException(
1133 "Invalid type '$type'. Known types are: " . implode( ', ', array_keys( self
::$listTypeMap ) )
1136 return [ 'list' => $list, 'type' => $type ];
1140 * Substitutes any parameters into the message text.
1144 * @param string $message The message text.
1145 * @param string $type Either "before" or "after".
1146 * @param string $format One of the FORMAT_* constants.
1150 protected function replaceParameters( $message, $type, $format ) {
1151 // A temporary marker for $1 parameters that is only valid
1152 // in non-attribute contexts. However if the entire message is escaped
1153 // then we don't want to use it because it will be mangled in all contexts
1154 // and its unnessary as ->escaped() messages aren't html.
1155 $marker = $format === self
::FORMAT_ESCAPED ?
'$' : '$\'"';
1156 $replacementKeys = [];
1157 foreach ( $this->parameters
as $n => $param ) {
1158 list( $paramType, $value ) = $this->extractParam( $param, $format );
1159 if ( $type === 'before' ) {
1160 if ( $paramType === 'before' ) {
1161 $replacementKeys['$' . ( $n +
1 )] = $value;
1162 } else /* $paramType === 'after' */ {
1163 // To protect against XSS from replacing parameters
1164 // inside html attributes, we convert $1 to $'"1.
1165 // In the event that one of the parameters ends up
1166 // in an attribute, either the ' or the " will be
1167 // escaped, breaking the replacement and avoiding XSS.
1168 $replacementKeys['$' . ( $n +
1 )] = $marker . ( $n +
1 );
1170 } elseif ( $paramType === 'after' ) {
1171 $replacementKeys[$marker . ( $n +
1 )] = $value;
1174 return strtr( $message, $replacementKeys );
1178 * Extracts the parameter type and preprocessed the value if needed.
1182 * @param mixed $param Parameter as defined in this class.
1183 * @param string $format One of the FORMAT_* constants.
1185 * @return array Array with the parameter type (either "before" or "after") and the value.
1187 protected function extractParam( $param, $format ) {
1188 if ( is_array( $param ) ) {
1189 if ( isset( $param['raw'] ) ) {
1190 return [ 'after', $param['raw'] ];
1191 } elseif ( isset( $param['num'] ) ) {
1192 // Replace number params always in before step for now.
1193 // No support for combined raw and num params
1194 return [ 'before', $this->getLanguage()->formatNum( $param['num'] ) ];
1195 } elseif ( isset( $param['duration'] ) ) {
1196 return [ 'before', $this->getLanguage()->formatDuration( $param['duration'] ) ];
1197 } elseif ( isset( $param['expiry'] ) ) {
1198 return [ 'before', $this->getLanguage()->formatExpiry( $param['expiry'] ) ];
1199 } elseif ( isset( $param['period'] ) ) {
1200 return [ 'before', $this->getLanguage()->formatTimePeriod( $param['period'] ) ];
1201 } elseif ( isset( $param['size'] ) ) {
1202 return [ 'before', $this->getLanguage()->formatSize( $param['size'] ) ];
1203 } elseif ( isset( $param['bitrate'] ) ) {
1204 return [ 'before', $this->getLanguage()->formatBitrate( $param['bitrate'] ) ];
1205 } elseif ( isset( $param['plaintext'] ) ) {
1206 return [ 'after', $this->formatPlaintext( $param['plaintext'], $format ) ];
1207 } elseif ( isset( $param['list'] ) ) {
1208 return $this->formatListParam( $param['list'], $param['type'], $format );
1210 if ( !is_scalar( $param ) ) {
1211 $param = serialize( $param );
1213 LoggerFactory
::getInstance( 'Bug58676' )->warning(
1214 'Invalid parameter for message "{msgkey}": {param}',
1216 'exception' => new Exception
,
1217 'msgkey' => $this->getKey(),
1218 'param' => htmlspecialchars( $param ),
1222 return [ 'before', '[INVALID]' ];
1224 } elseif ( $param instanceof Message
) {
1225 // Match language, flags, etc. to the current message.
1226 $msg = clone $param;
1227 if ( $msg->language
!== $this->language ||
$msg->useDatabase
!== $this->useDatabase
) {
1228 // Cache depends on these parameters
1229 $msg->message
= null;
1231 $msg->interface = $this->interface;
1232 $msg->language
= $this->language
;
1233 $msg->useDatabase
= $this->useDatabase
;
1234 $msg->title
= $this->title
;
1237 if ( $format === 'block-parse' ) {
1240 $msg->format
= $format;
1242 // Message objects should not be before parameters because
1243 // then they'll get double escaped. If the message needs to be
1244 // escaped, it'll happen right here when we call toString().
1245 return [ 'after', $msg->toString( $format ) ];
1247 return [ 'before', $param ];
1252 * Wrapper for what ever method we use to parse wikitext.
1256 * @param string $string Wikitext message contents.
1258 * @return string Wikitext parsed into HTML.
1260 protected function parseText( $string ) {
1261 $out = MessageCache
::singleton()->parse(
1266 $this->getLanguage()
1269 return $out instanceof ParserOutput
1271 'enableSectionEditLinks' => false,
1272 // Wrapping messages in an extra <div> is probably not expected. If
1273 // they're outside the content area they probably shouldn't be
1274 // targeted by CSS that's targeting the parser output, and if
1275 // they're inside they already are from the outer div.
1282 * Wrapper for what ever method we use to {{-transform wikitext.
1286 * @param string $string Wikitext message contents.
1288 * @return string Wikitext with {{-constructs replaced with their values.
1290 protected function transformText( $string ) {
1291 return MessageCache
::singleton()->transform(
1294 $this->getLanguage(),
1300 * Wrapper for what ever method we use to get message contents.
1305 * @throws MWException If message key array is empty.
1307 protected function fetchMessage() {
1308 if ( $this->message
=== null ) {
1309 $cache = MessageCache
::singleton();
1311 foreach ( $this->keysToTry
as $key ) {
1312 $message = $cache->get( $key, $this->useDatabase
, $this->getLanguage() );
1313 if ( $message !== false && $message !== '' ) {
1318 // NOTE: The constructor makes sure keysToTry isn't empty,
1319 // so we know that $key and $message are initialized.
1321 $this->message
= $message;
1323 return $this->message
;
1327 * Formats a message parameter wrapped with 'plaintext'. Ensures that
1328 * the entire string is displayed unchanged when displayed in the output
1333 * @param string $plaintext String to ensure plaintext output of
1334 * @param string $format One of the FORMAT_* constants.
1336 * @return string Input plaintext encoded for output to $format
1338 protected function formatPlaintext( $plaintext, $format ) {
1339 switch ( $format ) {
1340 case self
::FORMAT_TEXT
:
1341 case self
::FORMAT_PLAIN
:
1344 case self
::FORMAT_PARSE
:
1345 case self
::FORMAT_BLOCK_PARSE
:
1346 case self
::FORMAT_ESCAPED
:
1348 return htmlspecialchars( $plaintext, ENT_QUOTES
);
1353 * Formats a list of parameters as a concatenated string.
1355 * @param array $params
1356 * @param string $listType
1357 * @param string $format One of the FORMAT_* constants.
1358 * @return array Array with the parameter type (either "before" or "after") and the value.
1360 protected function formatListParam( array $params, $listType, $format ) {
1361 if ( !isset( self
::$listTypeMap[$listType] ) ) {
1362 $warning = 'Invalid list type for message "' . $this->getKey() . '": '
1363 . htmlspecialchars( $listType )
1364 . ' (params are ' . htmlspecialchars( serialize( $params ) ) . ')';
1365 trigger_error( $warning, E_USER_WARNING
);
1367 wfDebugLog( 'Bug58676', $warning . "\n" . $e->getTraceAsString() );
1368 return [ 'before', '[INVALID]' ];
1370 $func = self
::$listTypeMap[$listType];
1372 // Handle an empty list sensibly
1374 return [ 'before', $this->getLanguage()->$func( [] ) ];
1377 // First, determine what kinds of list items we have
1381 foreach ( $params as $n => $p ) {
1382 list( $type, $value ) = $this->extractParam( $p, $format );
1383 $types[$type] = true;
1385 $vars[] = '$' . ( $n +
1 );
1388 // Easy case: all are 'before' or 'after', so just join the
1389 // values and use the same type.
1390 if ( count( $types ) === 1 ) {
1391 return [ key( $types ), $this->getLanguage()->$func( $list ) ];
1394 // Hard case: We need to process each value per its type, then
1395 // return the concatenated values as 'after'. We handle this by turning
1396 // the list into a RawMessage and processing that as a parameter.
1397 $vars = $this->getLanguage()->$func( $vars );
1398 return $this->extractParam( new RawMessage( $vars, $params ), $format );