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[lhc/web/wiklou.git] / includes / parser / Parser.php
1 <?php
2 /**
3 * PHP parser that converts wiki markup to HTML.
4 *
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.
9 *
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.
14 *
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
19 *
20 * @file
21 * @ingroup Parser
22 */
23
24 /**
25 * @defgroup Parser Parser
26 */
27
28 /**
29 * PHP Parser - Processes wiki markup (which uses a more user-friendly
30 * syntax, such as "[[link]]" for making links), and provides a one-way
31 * transformation of that wiki markup it into XHTML output / markup
32 * (which in turn the browser understands, and can display).
33 *
34 * There are seven main entry points into the Parser class:
35 *
36 * - Parser::parse()
37 * produces HTML output
38 * - Parser::preSaveTransform().
39 * produces altered wiki markup.
40 * - Parser::preprocess()
41 * removes HTML comments and expands templates
42 * - Parser::cleanSig() and Parser::cleanSigInSig()
43 * Cleans a signature before saving it to preferences
44 * - Parser::getSection()
45 * Return the content of a section from an article for section editing
46 * - Parser::replaceSection()
47 * Replaces a section by number inside an article
48 * - Parser::getPreloadText()
49 * Removes <noinclude> sections, and <includeonly> tags.
50 *
51 * Globals used:
52 * object: $wgContLang
53 *
54 * @warning $wgUser or $wgTitle or $wgRequest or $wgLang. Keep them away!
55 *
56 * @par Settings:
57 * $wgLocaltimezone
58 * $wgNamespacesWithSubpages
59 *
60 * @par Settings only within ParserOptions:
61 * $wgAllowExternalImages
62 * $wgAllowSpecialInclusion
63 * $wgInterwikiMagic
64 * $wgMaxArticleSize
65 * $wgUseDynamicDates
66 *
67 * @ingroup Parser
68 */
69 class Parser {
70 /**
71 * Update this version number when the ParserOutput format
72 * changes in an incompatible way, so the parser cache
73 * can automatically discard old data.
74 */
75 const VERSION = '1.6.4';
76
77 /**
78 * Update this version number when the output of serialiseHalfParsedText()
79 * changes in an incompatible way
80 */
81 const HALF_PARSED_VERSION = 2;
82
83 # Flags for Parser::setFunctionHook
84 # Also available as global constants from Defines.php
85 const SFH_NO_HASH = 1;
86 const SFH_OBJECT_ARGS = 2;
87
88 # Constants needed for external link processing
89 # Everything except bracket, space, or control characters
90 # \p{Zs} is unicode 'separator, space' category. It covers the space 0x20
91 # as well as U+3000 is IDEOGRAPHIC SPACE for bug 19052
92 const EXT_LINK_URL_CLASS = '[^][<>"\\x00-\\x20\\x7F\p{Zs}]';
93 const EXT_IMAGE_REGEX = '/^(http:\/\/|https:\/\/)([^][<>"\\x00-\\x20\\x7F\p{Zs}]+)
94 \\/([A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF]+)\\.((?i)gif|png|jpg|jpeg)$/Sxu';
95
96 # State constants for the definition list colon extraction
97 const COLON_STATE_TEXT = 0;
98 const COLON_STATE_TAG = 1;
99 const COLON_STATE_TAGSTART = 2;
100 const COLON_STATE_CLOSETAG = 3;
101 const COLON_STATE_TAGSLASH = 4;
102 const COLON_STATE_COMMENT = 5;
103 const COLON_STATE_COMMENTDASH = 6;
104 const COLON_STATE_COMMENTDASHDASH = 7;
105
106 # Flags for preprocessToDom
107 const PTD_FOR_INCLUSION = 1;
108
109 # Allowed values for $this->mOutputType
110 # Parameter to startExternalParse().
111 const OT_HTML = 1; # like parse()
112 const OT_WIKI = 2; # like preSaveTransform()
113 const OT_PREPROCESS = 3; # like preprocess()
114 const OT_MSG = 3;
115 const OT_PLAIN = 4; # like extractSections() - portions of the original are returned unchanged.
116
117 # Marker Suffix needs to be accessible staticly.
118 const MARKER_SUFFIX = "-QINU\x7f";
119
120 # Persistent:
121 var $mTagHooks = array();
122 var $mTransparentTagHooks = array();
123 var $mFunctionHooks = array();
124 var $mFunctionSynonyms = array( 0 => array(), 1 => array() );
125 var $mFunctionTagHooks = array();
126 var $mStripList = array();
127 var $mDefaultStripList = array();
128 var $mVarCache = array();
129 var $mImageParams = array();
130 var $mImageParamsMagicArray = array();
131 var $mMarkerIndex = 0;
132 var $mFirstCall = true;
133
134 # Initialised by initialiseVariables()
135
136 /**
137 * @var MagicWordArray
138 */
139 var $mVariables;
140
141 /**
142 * @var MagicWordArray
143 */
144 var $mSubstWords;
145 var $mConf, $mPreprocessor, $mExtLinkBracketedRegex, $mUrlProtocols; # Initialised in constructor
146
147 # Cleared with clearState():
148 /**
149 * @var ParserOutput
150 */
151 var $mOutput;
152 var $mAutonumber, $mDTopen;
153
154 /**
155 * @var StripState
156 */
157 var $mStripState;
158
159 var $mIncludeCount, $mArgStack, $mLastSection, $mInPre;
160 /**
161 * @var LinkHolderArray
162 */
163 var $mLinkHolders;
164
165 var $mLinkID;
166 var $mIncludeSizes, $mPPNodeCount, $mHighestExpansionDepth, $mDefaultSort;
167 var $mTplExpandCache; # empty-frame expansion cache
168 var $mTplRedirCache, $mTplDomCache, $mHeadings, $mDoubleUnderscores;
169 var $mExpensiveFunctionCount; # number of expensive parser function calls
170 var $mShowToc, $mForceTocPosition;
171
172 /**
173 * @var User
174 */
175 var $mUser; # User object; only used when doing pre-save transform
176
177 # Temporary
178 # These are variables reset at least once per parse regardless of $clearState
179
180 /**
181 * @var ParserOptions
182 */
183 var $mOptions;
184
185 /**
186 * @var Title
187 */
188 var $mTitle; # Title context, used for self-link rendering and similar things
189 var $mOutputType; # Output type, one of the OT_xxx constants
190 var $ot; # Shortcut alias, see setOutputType()
191 var $mRevisionObject; # The revision object of the specified revision ID
192 var $mRevisionId; # ID to display in {{REVISIONID}} tags
193 var $mRevisionTimestamp; # The timestamp of the specified revision ID
194 var $mRevisionUser; # User to display in {{REVISIONUSER}} tag
195 var $mRevIdForTs; # The revision ID which was used to fetch the timestamp
196
197 /**
198 * @var string
199 */
200 var $mUniqPrefix;
201
202 /**
203 * Constructor
204 *
205 * @param $conf array
206 */
207 public function __construct( $conf = array() ) {
208 $this->mConf = $conf;
209 $this->mUrlProtocols = wfUrlProtocols();
210 $this->mExtLinkBracketedRegex = '/\[((' . $this->mUrlProtocols . ')'.
211 self::EXT_LINK_URL_CLASS.'+)\p{Zs}*([^\]\\x00-\\x08\\x0a-\\x1F]*?)\]/Su';
212 if ( isset( $conf['preprocessorClass'] ) ) {
213 $this->mPreprocessorClass = $conf['preprocessorClass'];
214 } elseif ( defined( 'MW_COMPILED' ) ) {
215 # Preprocessor_Hash is much faster than Preprocessor_DOM in compiled mode
216 $this->mPreprocessorClass = 'Preprocessor_Hash';
217 } elseif ( extension_loaded( 'domxml' ) ) {
218 # PECL extension that conflicts with the core DOM extension (bug 13770)
219 wfDebug( "Warning: you have the obsolete domxml extension for PHP. Please remove it!\n" );
220 $this->mPreprocessorClass = 'Preprocessor_Hash';
221 } elseif ( extension_loaded( 'dom' ) ) {
222 $this->mPreprocessorClass = 'Preprocessor_DOM';
223 } else {
224 $this->mPreprocessorClass = 'Preprocessor_Hash';
225 }
226 wfDebug( __CLASS__ . ": using preprocessor: {$this->mPreprocessorClass}\n" );
227 }
228
229 /**
230 * Reduce memory usage to reduce the impact of circular references
231 */
232 function __destruct() {
233 if ( isset( $this->mLinkHolders ) ) {
234 unset( $this->mLinkHolders );
235 }
236 foreach ( $this as $name => $value ) {
237 unset( $this->$name );
238 }
239 }
240
241 /**
242 * Do various kinds of initialisation on the first call of the parser
243 */
244 function firstCallInit() {
245 if ( !$this->mFirstCall ) {
246 return;
247 }
248 $this->mFirstCall = false;
249
250 wfProfileIn( __METHOD__ );
251
252 CoreParserFunctions::register( $this );
253 CoreTagHooks::register( $this );
254 $this->initialiseVariables();
255
256 wfRunHooks( 'ParserFirstCallInit', array( &$this ) );
257 wfProfileOut( __METHOD__ );
258 }
259
260 /**
261 * Clear Parser state
262 *
263 * @private
264 */
265 function clearState() {
266 wfProfileIn( __METHOD__ );
267 if ( $this->mFirstCall ) {
268 $this->firstCallInit();
269 }
270 $this->mOutput = new ParserOutput;
271 $this->mOptions->registerWatcher( array( $this->mOutput, 'recordOption' ) );
272 $this->mAutonumber = 0;
273 $this->mLastSection = '';
274 $this->mDTopen = false;
275 $this->mIncludeCount = array();
276 $this->mArgStack = false;
277 $this->mInPre = false;
278 $this->mLinkHolders = new LinkHolderArray( $this );
279 $this->mLinkID = 0;
280 $this->mRevisionObject = $this->mRevisionTimestamp =
281 $this->mRevisionId = $this->mRevisionUser = null;
282 $this->mVarCache = array();
283 $this->mUser = null;
284
285 /**
286 * Prefix for temporary replacement strings for the multipass parser.
287 * \x07 should never appear in input as it's disallowed in XML.
288 * Using it at the front also gives us a little extra robustness
289 * since it shouldn't match when butted up against identifier-like
290 * string constructs.
291 *
292 * Must not consist of all title characters, or else it will change
293 * the behaviour of <nowiki> in a link.
294 */
295 $this->mUniqPrefix = "\x7fUNIQ" . self::getRandomString();
296 $this->mStripState = new StripState( $this->mUniqPrefix );
297
298
299 # Clear these on every parse, bug 4549
300 $this->mTplExpandCache = $this->mTplRedirCache = $this->mTplDomCache = array();
301
302 $this->mShowToc = true;
303 $this->mForceTocPosition = false;
304 $this->mIncludeSizes = array(
305 'post-expand' => 0,
306 'arg' => 0,
307 );
308 $this->mPPNodeCount = 0;
309 $this->mHighestExpansionDepth = 0;
310 $this->mDefaultSort = false;
311 $this->mHeadings = array();
312 $this->mDoubleUnderscores = array();
313 $this->mExpensiveFunctionCount = 0;
314
315 # Fix cloning
316 if ( isset( $this->mPreprocessor ) && $this->mPreprocessor->parser !== $this ) {
317 $this->mPreprocessor = null;
318 }
319
320 wfRunHooks( 'ParserClearState', array( &$this ) );
321 wfProfileOut( __METHOD__ );
322 }
323
324 /**
325 * Convert wikitext to HTML
326 * Do not call this function recursively.
327 *
328 * @param $text String: text we want to parse
329 * @param $title Title object
330 * @param $options ParserOptions
331 * @param $linestart boolean
332 * @param $clearState boolean
333 * @param $revid Int: number to pass in {{REVISIONID}}
334 * @return ParserOutput a ParserOutput
335 */
336 public function parse( $text, Title $title, ParserOptions $options, $linestart = true, $clearState = true, $revid = null ) {
337 /**
338 * First pass--just handle <nowiki> sections, pass the rest off
339 * to internalParse() which does all the real work.
340 */
341
342 global $wgUseTidy, $wgAlwaysUseTidy, $wgDisableLangConversion, $wgDisableTitleConversion;
343 $fname = __METHOD__.'-' . wfGetCaller();
344 wfProfileIn( __METHOD__ );
345 wfProfileIn( $fname );
346
347 $this->startParse( $title, $options, self::OT_HTML, $clearState );
348
349 # Remove the strip marker tag prefix from the input, if present.
350 if ( $clearState ) {
351 $text = str_replace( $this->mUniqPrefix, '', $text );
352 }
353
354 $oldRevisionId = $this->mRevisionId;
355 $oldRevisionObject = $this->mRevisionObject;
356 $oldRevisionTimestamp = $this->mRevisionTimestamp;
357 $oldRevisionUser = $this->mRevisionUser;
358 if ( $revid !== null ) {
359 $this->mRevisionId = $revid;
360 $this->mRevisionObject = null;
361 $this->mRevisionTimestamp = null;
362 $this->mRevisionUser = null;
363 }
364
365 wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
366 # No more strip!
367 wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
368 $text = $this->internalParse( $text );
369 wfRunHooks( 'ParserAfterParse', array( &$this, &$text, &$this->mStripState ) );
370
371 $text = $this->mStripState->unstripGeneral( $text );
372
373 # Clean up special characters, only run once, next-to-last before doBlockLevels
374 $fixtags = array(
375 # french spaces, last one Guillemet-left
376 # only if there is something before the space
377 '/(.) (?=\\?|:|;|!|%|\\302\\273)/' => '\\1&#160;',
378 # french spaces, Guillemet-right
379 '/(\\302\\253) /' => '\\1&#160;',
380 '/&#160;(!\s*important)/' => ' \\1', # Beware of CSS magic word !important, bug #11874.
381 );
382 $text = preg_replace( array_keys( $fixtags ), array_values( $fixtags ), $text );
383
384 $text = $this->doBlockLevels( $text, $linestart );
385
386 $this->replaceLinkHolders( $text );
387
388 /**
389 * The input doesn't get language converted if
390 * a) It's disabled
391 * b) Content isn't converted
392 * c) It's a conversion table
393 * d) it is an interface message (which is in the user language)
394 */
395 if ( !( $wgDisableLangConversion
396 || isset( $this->mDoubleUnderscores['nocontentconvert'] )
397 || $this->mTitle->isConversionTable() ) )
398 {
399 # Run convert unconditionally in 1.18-compatible mode
400 global $wgBug34832TransitionalRollback;
401 if ( $wgBug34832TransitionalRollback || !$this->mOptions->getInterfaceMessage() ) {
402 # The position of the convert() call should not be changed. it
403 # assumes that the links are all replaced and the only thing left
404 # is the <nowiki> mark.
405 $text = $this->getConverterLanguage()->convert( $text );
406 }
407 }
408
409 /**
410 * A converted title will be provided in the output object if title and
411 * content conversion are enabled, the article text does not contain
412 * a conversion-suppressing double-underscore tag, and no
413 * {{DISPLAYTITLE:...}} is present. DISPLAYTITLE takes precedence over
414 * automatic link conversion.
415 */
416 if ( !( $wgDisableLangConversion
417 || $wgDisableTitleConversion
418 || isset( $this->mDoubleUnderscores['nocontentconvert'] )
419 || isset( $this->mDoubleUnderscores['notitleconvert'] )
420 || $this->mOutput->getDisplayTitle() !== false ) )
421 {
422 $convruletitle = $this->getConverterLanguage()->getConvRuleTitle();
423 if ( $convruletitle ) {
424 $this->mOutput->setTitleText( $convruletitle );
425 } else {
426 $titleText = $this->getConverterLanguage()->convertTitle( $title );
427 $this->mOutput->setTitleText( $titleText );
428 }
429 }
430
431 $text = $this->mStripState->unstripNoWiki( $text );
432
433 wfRunHooks( 'ParserBeforeTidy', array( &$this, &$text ) );
434
435 $text = $this->replaceTransparentTags( $text );
436 $text = $this->mStripState->unstripGeneral( $text );
437
438 $text = Sanitizer::normalizeCharReferences( $text );
439
440 if ( ( $wgUseTidy && $this->mOptions->getTidy() ) || $wgAlwaysUseTidy ) {
441 $text = MWTidy::tidy( $text );
442 } else {
443 # attempt to sanitize at least some nesting problems
444 # (bug #2702 and quite a few others)
445 $tidyregs = array(
446 # ''Something [http://www.cool.com cool''] -->
447 # <i>Something</i><a href="http://www.cool.com"..><i>cool></i></a>
448 '/(<([bi])>)(<([bi])>)?([^<]*)(<\/?a[^<]*>)([^<]*)(<\/\\4>)?(<\/\\2>)/' =>
449 '\\1\\3\\5\\8\\9\\6\\1\\3\\7\\8\\9',
450 # fix up an anchor inside another anchor, only
451 # at least for a single single nested link (bug 3695)
452 '/(<a[^>]+>)([^<]*)(<a[^>]+>[^<]*)<\/a>(.*)<\/a>/' =>
453 '\\1\\2</a>\\3</a>\\1\\4</a>',
454 # fix div inside inline elements- doBlockLevels won't wrap a line which
455 # contains a div, so fix it up here; replace
456 # div with escaped text
457 '/(<([aib]) [^>]+>)([^<]*)(<div([^>]*)>)(.*)(<\/div>)([^<]*)(<\/\\2>)/' =>
458 '\\1\\3&lt;div\\5&gt;\\6&lt;/div&gt;\\8\\9',
459 # remove empty italic or bold tag pairs, some
460 # introduced by rules above
461 '/<([bi])><\/\\1>/' => '',
462 );
463
464 $text = preg_replace(
465 array_keys( $tidyregs ),
466 array_values( $tidyregs ),
467 $text );
468 }
469
470 if ( $this->mExpensiveFunctionCount > $this->mOptions->getExpensiveParserFunctionLimit() ) {
471 $this->limitationWarn( 'expensive-parserfunction',
472 $this->mExpensiveFunctionCount,
473 $this->mOptions->getExpensiveParserFunctionLimit()
474 );
475 }
476
477 wfRunHooks( 'ParserAfterTidy', array( &$this, &$text ) );
478
479 # Information on include size limits, for the benefit of users who try to skirt them
480 if ( $this->mOptions->getEnableLimitReport() ) {
481 $max = $this->mOptions->getMaxIncludeSize();
482 $PFreport = "Expensive parser function count: {$this->mExpensiveFunctionCount}/{$this->mOptions->getExpensiveParserFunctionLimit()}\n";
483 $limitReport =
484 "NewPP limit report\n" .
485 "Preprocessor node count: {$this->mPPNodeCount}/{$this->mOptions->getMaxPPNodeCount()}\n" .
486 "Post-expand include size: {$this->mIncludeSizes['post-expand']}/$max bytes\n" .
487 "Template argument size: {$this->mIncludeSizes['arg']}/$max bytes\n".
488 "Highest expansion depth: {$this->mHighestExpansionDepth}/{$this->mOptions->getMaxPPExpandDepth()}\n".
489 $PFreport;
490 wfRunHooks( 'ParserLimitReport', array( $this, &$limitReport ) );
491 $text .= "\n<!-- \n$limitReport-->\n";
492 }
493 $this->mOutput->setText( $text );
494
495 $this->mRevisionId = $oldRevisionId;
496 $this->mRevisionObject = $oldRevisionObject;
497 $this->mRevisionTimestamp = $oldRevisionTimestamp;
498 $this->mRevisionUser = $oldRevisionUser;
499 wfProfileOut( $fname );
500 wfProfileOut( __METHOD__ );
501
502 return $this->mOutput;
503 }
504
505 /**
506 * Recursive parser entry point that can be called from an extension tag
507 * hook.
508 *
509 * If $frame is not provided, then template variables (e.g., {{{1}}}) within $text are not expanded
510 *
511 * @param $text String: text extension wants to have parsed
512 * @param $frame PPFrame: The frame to use for expanding any template variables
513 *
514 * @return string
515 */
516 function recursiveTagParse( $text, $frame=false ) {
517 wfProfileIn( __METHOD__ );
518 wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
519 wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
520 $text = $this->internalParse( $text, false, $frame );
521 wfProfileOut( __METHOD__ );
522 return $text;
523 }
524
525 /**
526 * Expand templates and variables in the text, producing valid, static wikitext.
527 * Also removes comments.
528 * @return mixed|string
529 */
530 function preprocess( $text, Title $title, ParserOptions $options, $revid = null ) {
531 wfProfileIn( __METHOD__ );
532 $this->startParse( $title, $options, self::OT_PREPROCESS, true );
533 if ( $revid !== null ) {
534 $this->mRevisionId = $revid;
535 }
536 wfRunHooks( 'ParserBeforeStrip', array( &$this, &$text, &$this->mStripState ) );
537 wfRunHooks( 'ParserAfterStrip', array( &$this, &$text, &$this->mStripState ) );
538 $text = $this->replaceVariables( $text );
539 $text = $this->mStripState->unstripBoth( $text );
540 wfProfileOut( __METHOD__ );
541 return $text;
542 }
543
544 /**
545 * Recursive parser entry point that can be called from an extension tag
546 * hook.
547 *
548 * @param $text String: text to be expanded
549 * @param $frame PPFrame: The frame to use for expanding any template variables
550 * @return String
551 * @since 1.19
552 */
553 public function recursivePreprocess( $text, $frame = false ) {
554 wfProfileIn( __METHOD__ );
555 $text = $this->replaceVariables( $text, $frame );
556 $text = $this->mStripState->unstripBoth( $text );
557 wfProfileOut( __METHOD__ );
558 return $text;
559 }
560
561 /**
562 * Process the wikitext for the "?preload=" feature. (bug 5210)
563 *
564 * "<noinclude>", "<includeonly>" etc. are parsed as for template
565 * transclusion, comments, templates, arguments, tags hooks and parser
566 * functions are untouched.
567 *
568 * @param $text String
569 * @param $title Title
570 * @param $options ParserOptions
571 * @return String
572 */
573 public function getPreloadText( $text, Title $title, ParserOptions $options ) {
574 # Parser (re)initialisation
575 $this->startParse( $title, $options, self::OT_PLAIN, true );
576
577 $flags = PPFrame::NO_ARGS | PPFrame::NO_TEMPLATES;
578 $dom = $this->preprocessToDom( $text, self::PTD_FOR_INCLUSION );
579 $text = $this->getPreprocessor()->newFrame()->expand( $dom, $flags );
580 $text = $this->mStripState->unstripBoth( $text );
581 return $text;
582 }
583
584 /**
585 * Get a random string
586 *
587 * @return string
588 */
589 static public function getRandomString() {
590 return wfRandomString( 16 );
591 }
592
593 /**
594 * Set the current user.
595 * Should only be used when doing pre-save transform.
596 *
597 * @param $user Mixed: User object or null (to reset)
598 */
599 function setUser( $user ) {
600 $this->mUser = $user;
601 }
602
603 /**
604 * Accessor for mUniqPrefix.
605 *
606 * @return String
607 */
608 public function uniqPrefix() {
609 if ( !isset( $this->mUniqPrefix ) ) {
610 # @todo FIXME: This is probably *horribly wrong*
611 # LanguageConverter seems to want $wgParser's uniqPrefix, however
612 # if this is called for a parser cache hit, the parser may not
613 # have ever been initialized in the first place.
614 # Not really sure what the heck is supposed to be going on here.
615 return '';
616 # throw new MWException( "Accessing uninitialized mUniqPrefix" );
617 }
618 return $this->mUniqPrefix;
619 }
620
621 /**
622 * Set the context title
623 *
624 * @param $t Title
625 */
626 function setTitle( $t ) {
627 if ( !$t || $t instanceof FakeTitle ) {
628 $t = Title::newFromText( 'NO TITLE' );
629 }
630
631 if ( strval( $t->getFragment() ) !== '' ) {
632 # Strip the fragment to avoid various odd effects
633 $this->mTitle = clone $t;
634 $this->mTitle->setFragment( '' );
635 } else {
636 $this->mTitle = $t;
637 }
638 }
639
640 /**
641 * Accessor for the Title object
642 *
643 * @return Title object
644 */
645 function getTitle() {
646 return $this->mTitle;
647 }
648
649 /**
650 * Accessor/mutator for the Title object
651 *
652 * @param $x Title object or null to just get the current one
653 * @return Title object
654 */
655 function Title( $x = null ) {
656 return wfSetVar( $this->mTitle, $x );
657 }
658
659 /**
660 * Set the output type
661 *
662 * @param $ot Integer: new value
663 */
664 function setOutputType( $ot ) {
665 $this->mOutputType = $ot;
666 # Shortcut alias
667 $this->ot = array(
668 'html' => $ot == self::OT_HTML,
669 'wiki' => $ot == self::OT_WIKI,
670 'pre' => $ot == self::OT_PREPROCESS,
671 'plain' => $ot == self::OT_PLAIN,
672 );
673 }
674
675 /**
676 * Accessor/mutator for the output type
677 *
678 * @param $x int|null New value or null to just get the current one
679 * @return Integer
680 */
681 function OutputType( $x = null ) {
682 return wfSetVar( $this->mOutputType, $x );
683 }
684
685 /**
686 * Get the ParserOutput object
687 *
688 * @return ParserOutput object
689 */
690 function getOutput() {
691 return $this->mOutput;
692 }
693
694 /**
695 * Get the ParserOptions object
696 *
697 * @return ParserOptions object
698 */
699 function getOptions() {
700 return $this->mOptions;
701 }
702
703 /**
704 * Accessor/mutator for the ParserOptions object
705 *
706 * @param $x ParserOptions New value or null to just get the current one
707 * @return ParserOptions Current ParserOptions object
708 */
709 function Options( $x = null ) {
710 return wfSetVar( $this->mOptions, $x );
711 }
712
713 /**
714 * @return int
715 */
716 function nextLinkID() {
717 return $this->mLinkID++;
718 }
719
720 /**
721 * @param $id int
722 */
723 function setLinkID( $id ) {
724 $this->mLinkID = $id;
725 }
726
727 /**
728 * Get a language object for use in parser functions such as {{FORMATNUM:}}
729 * @return Language
730 */
731 function getFunctionLang() {
732 return $this->getTargetLanguage();
733 }
734
735 /**
736 * Get the target language for the content being parsed. This is usually the
737 * language that the content is in.
738 */
739 function getTargetLanguage() {
740 $target = $this->mOptions->getTargetLanguage();
741 if ( $target !== null ) {
742 return $target;
743 } elseif( $this->mOptions->getInterfaceMessage() ) {
744 return $this->mOptions->getUserLangObj();
745 } elseif( is_null( $this->mTitle ) ) {
746 throw new MWException( __METHOD__.': $this->mTitle is null' );
747 }
748 return $this->mTitle->getPageLanguage();
749 }
750
751 /**
752 * Get the language object for language conversion
753 */
754 function getConverterLanguage() {
755 global $wgBug34832TransitionalRollback, $wgContLang;
756 if ( $wgBug34832TransitionalRollback ) {
757 return $wgContLang;
758 } else {
759 return $this->getTargetLanguage();
760 }
761 }
762
763 /**
764 * Get a User object either from $this->mUser, if set, or from the
765 * ParserOptions object otherwise
766 *
767 * @return User object
768 */
769 function getUser() {
770 if ( !is_null( $this->mUser ) ) {
771 return $this->mUser;
772 }
773 return $this->mOptions->getUser();
774 }
775
776 /**
777 * Get a preprocessor object
778 *
779 * @return Preprocessor instance
780 */
781 function getPreprocessor() {
782 if ( !isset( $this->mPreprocessor ) ) {
783 $class = $this->mPreprocessorClass;
784 $this->mPreprocessor = new $class( $this );
785 }
786 return $this->mPreprocessor;
787 }
788
789 /**
790 * Replaces all occurrences of HTML-style comments and the given tags
791 * in the text with a random marker and returns the next text. The output
792 * parameter $matches will be an associative array filled with data in
793 * the form:
794 *
795 * @code
796 * 'UNIQ-xxxxx' => array(
797 * 'element',
798 * 'tag content',
799 * array( 'param' => 'x' ),
800 * '<element param="x">tag content</element>' ) )
801 * @endcode
802 *
803 * @param $elements array list of element names. Comments are always extracted.
804 * @param $text string Source text string.
805 * @param $matches array Out parameter, Array: extracted tags
806 * @param $uniq_prefix string
807 * @return String: stripped text
808 */
809 public static function extractTagsAndParams( $elements, $text, &$matches, $uniq_prefix = '' ) {
810 static $n = 1;
811 $stripped = '';
812 $matches = array();
813
814 $taglist = implode( '|', $elements );
815 $start = "/<($taglist)(\\s+[^>]*?|\\s*?)(\/?" . ">)|<(!--)/i";
816
817 while ( $text != '' ) {
818 $p = preg_split( $start, $text, 2, PREG_SPLIT_DELIM_CAPTURE );
819 $stripped .= $p[0];
820 if ( count( $p ) < 5 ) {
821 break;
822 }
823 if ( count( $p ) > 5 ) {
824 # comment
825 $element = $p[4];
826 $attributes = '';
827 $close = '';
828 $inside = $p[5];
829 } else {
830 # tag
831 $element = $p[1];
832 $attributes = $p[2];
833 $close = $p[3];
834 $inside = $p[4];
835 }
836
837 $marker = "$uniq_prefix-$element-" . sprintf( '%08X', $n++ ) . self::MARKER_SUFFIX;
838 $stripped .= $marker;
839
840 if ( $close === '/>' ) {
841 # Empty element tag, <tag />
842 $content = null;
843 $text = $inside;
844 $tail = null;
845 } else {
846 if ( $element === '!--' ) {
847 $end = '/(-->)/';
848 } else {
849 $end = "/(<\\/$element\\s*>)/i";
850 }
851 $q = preg_split( $end, $inside, 2, PREG_SPLIT_DELIM_CAPTURE );
852 $content = $q[0];
853 if ( count( $q ) < 3 ) {
854 # No end tag -- let it run out to the end of the text.
855 $tail = '';
856 $text = '';
857 } else {
858 $tail = $q[1];
859 $text = $q[2];
860 }
861 }
862
863 $matches[$marker] = array( $element,
864 $content,
865 Sanitizer::decodeTagAttributes( $attributes ),
866 "<$element$attributes$close$content$tail" );
867 }
868 return $stripped;
869 }
870
871 /**
872 * Get a list of strippable XML-like elements
873 *
874 * @return array
875 */
876 function getStripList() {
877 return $this->mStripList;
878 }
879
880 /**
881 * Add an item to the strip state
882 * Returns the unique tag which must be inserted into the stripped text
883 * The tag will be replaced with the original text in unstrip()
884 *
885 * @param $text string
886 *
887 * @return string
888 */
889 function insertStripItem( $text ) {
890 $rnd = "{$this->mUniqPrefix}-item-{$this->mMarkerIndex}-" . self::MARKER_SUFFIX;
891 $this->mMarkerIndex++;
892 $this->mStripState->addGeneral( $rnd, $text );
893 return $rnd;
894 }
895
896 /**
897 * parse the wiki syntax used to render tables
898 *
899 * @private
900 * @return string
901 */
902 function doTableStuff( $text ) {
903 wfProfileIn( __METHOD__ );
904
905 $lines = StringUtils::explode( "\n", $text );
906 $out = '';
907 $td_history = array(); # Is currently a td tag open?
908 $last_tag_history = array(); # Save history of last lag activated (td, th or caption)
909 $tr_history = array(); # Is currently a tr tag open?
910 $tr_attributes = array(); # history of tr attributes
911 $has_opened_tr = array(); # Did this table open a <tr> element?
912 $indent_level = 0; # indent level of the table
913
914 foreach ( $lines as $outLine ) {
915 $line = trim( $outLine );
916
917 if ( $line === '' ) { # empty line, go to next line
918 $out .= $outLine."\n";
919 continue;
920 }
921
922 $first_character = $line[0];
923 $matches = array();
924
925 if ( preg_match( '/^(:*)\{\|(.*)$/', $line , $matches ) ) {
926 # First check if we are starting a new table
927 $indent_level = strlen( $matches[1] );
928
929 $attributes = $this->mStripState->unstripBoth( $matches[2] );
930 $attributes = Sanitizer::fixTagAttributes( $attributes , 'table' );
931
932 $outLine = str_repeat( '<dl><dd>' , $indent_level ) . "<table{$attributes}>";
933 array_push( $td_history , false );
934 array_push( $last_tag_history , '' );
935 array_push( $tr_history , false );
936 array_push( $tr_attributes , '' );
937 array_push( $has_opened_tr , false );
938 } elseif ( count( $td_history ) == 0 ) {
939 # Don't do any of the following
940 $out .= $outLine."\n";
941 continue;
942 } elseif ( substr( $line , 0 , 2 ) === '|}' ) {
943 # We are ending a table
944 $line = '</table>' . substr( $line , 2 );
945 $last_tag = array_pop( $last_tag_history );
946
947 if ( !array_pop( $has_opened_tr ) ) {
948 $line = "<tr><td></td></tr>{$line}";
949 }
950
951 if ( array_pop( $tr_history ) ) {
952 $line = "</tr>{$line}";
953 }
954
955 if ( array_pop( $td_history ) ) {
956 $line = "</{$last_tag}>{$line}";
957 }
958 array_pop( $tr_attributes );
959 $outLine = $line . str_repeat( '</dd></dl>' , $indent_level );
960 } elseif ( substr( $line , 0 , 2 ) === '|-' ) {
961 # Now we have a table row
962 $line = preg_replace( '#^\|-+#', '', $line );
963
964 # Whats after the tag is now only attributes
965 $attributes = $this->mStripState->unstripBoth( $line );
966 $attributes = Sanitizer::fixTagAttributes( $attributes, 'tr' );
967 array_pop( $tr_attributes );
968 array_push( $tr_attributes, $attributes );
969
970 $line = '';
971 $last_tag = array_pop( $last_tag_history );
972 array_pop( $has_opened_tr );
973 array_push( $has_opened_tr , true );
974
975 if ( array_pop( $tr_history ) ) {
976 $line = '</tr>';
977 }
978
979 if ( array_pop( $td_history ) ) {
980 $line = "</{$last_tag}>{$line}";
981 }
982
983 $outLine = $line;
984 array_push( $tr_history , false );
985 array_push( $td_history , false );
986 array_push( $last_tag_history , '' );
987 } elseif ( $first_character === '|' || $first_character === '!' || substr( $line , 0 , 2 ) === '|+' ) {
988 # This might be cell elements, td, th or captions
989 if ( substr( $line , 0 , 2 ) === '|+' ) {
990 $first_character = '+';
991 $line = substr( $line , 1 );
992 }
993
994 $line = substr( $line , 1 );
995
996 if ( $first_character === '!' ) {
997 $line = str_replace( '!!' , '||' , $line );
998 }
999
1000 # Split up multiple cells on the same line.
1001 # FIXME : This can result in improper nesting of tags processed
1002 # by earlier parser steps, but should avoid splitting up eg
1003 # attribute values containing literal "||".
1004 $cells = StringUtils::explodeMarkup( '||' , $line );
1005
1006 $outLine = '';
1007
1008 # Loop through each table cell
1009 foreach ( $cells as $cell ) {
1010 $previous = '';
1011 if ( $first_character !== '+' ) {
1012 $tr_after = array_pop( $tr_attributes );
1013 if ( !array_pop( $tr_history ) ) {
1014 $previous = "<tr{$tr_after}>\n";
1015 }
1016 array_push( $tr_history , true );
1017 array_push( $tr_attributes , '' );
1018 array_pop( $has_opened_tr );
1019 array_push( $has_opened_tr , true );
1020 }
1021
1022 $last_tag = array_pop( $last_tag_history );
1023
1024 if ( array_pop( $td_history ) ) {
1025 $previous = "</{$last_tag}>\n{$previous}";
1026 }
1027
1028 if ( $first_character === '|' ) {
1029 $last_tag = 'td';
1030 } elseif ( $first_character === '!' ) {
1031 $last_tag = 'th';
1032 } elseif ( $first_character === '+' ) {
1033 $last_tag = 'caption';
1034 } else {
1035 $last_tag = '';
1036 }
1037
1038 array_push( $last_tag_history , $last_tag );
1039
1040 # A cell could contain both parameters and data
1041 $cell_data = explode( '|' , $cell , 2 );
1042
1043 # Bug 553: Note that a '|' inside an invalid link should not
1044 # be mistaken as delimiting cell parameters
1045 if ( strpos( $cell_data[0], '[[' ) !== false ) {
1046 $cell = "{$previous}<{$last_tag}>{$cell}";
1047 } elseif ( count( $cell_data ) == 1 ) {
1048 $cell = "{$previous}<{$last_tag}>{$cell_data[0]}";
1049 } else {
1050 $attributes = $this->mStripState->unstripBoth( $cell_data[0] );
1051 $attributes = Sanitizer::fixTagAttributes( $attributes , $last_tag );
1052 $cell = "{$previous}<{$last_tag}{$attributes}>{$cell_data[1]}";
1053 }
1054
1055 $outLine .= $cell;
1056 array_push( $td_history , true );
1057 }
1058 }
1059 $out .= $outLine . "\n";
1060 }
1061
1062 # Closing open td, tr && table
1063 while ( count( $td_history ) > 0 ) {
1064 if ( array_pop( $td_history ) ) {
1065 $out .= "</td>\n";
1066 }
1067 if ( array_pop( $tr_history ) ) {
1068 $out .= "</tr>\n";
1069 }
1070 if ( !array_pop( $has_opened_tr ) ) {
1071 $out .= "<tr><td></td></tr>\n" ;
1072 }
1073
1074 $out .= "</table>\n";
1075 }
1076
1077 # Remove trailing line-ending (b/c)
1078 if ( substr( $out, -1 ) === "\n" ) {
1079 $out = substr( $out, 0, -1 );
1080 }
1081
1082 # special case: don't return empty table
1083 if ( $out === "<table>\n<tr><td></td></tr>\n</table>" ) {
1084 $out = '';
1085 }
1086
1087 wfProfileOut( __METHOD__ );
1088
1089 return $out;
1090 }
1091
1092 /**
1093 * Helper function for parse() that transforms wiki markup into
1094 * HTML. Only called for $mOutputType == self::OT_HTML.
1095 *
1096 * @private
1097 *
1098 * @param $text string
1099 * @param $isMain bool
1100 * @param $frame bool
1101 *
1102 * @return string
1103 */
1104 function internalParse( $text, $isMain = true, $frame = false ) {
1105 wfProfileIn( __METHOD__ );
1106
1107 $origText = $text;
1108
1109 # Hook to suspend the parser in this state
1110 if ( !wfRunHooks( 'ParserBeforeInternalParse', array( &$this, &$text, &$this->mStripState ) ) ) {
1111 wfProfileOut( __METHOD__ );
1112 return $text ;
1113 }
1114
1115 # if $frame is provided, then use $frame for replacing any variables
1116 if ( $frame ) {
1117 # use frame depth to infer how include/noinclude tags should be handled
1118 # depth=0 means this is the top-level document; otherwise it's an included document
1119 if ( !$frame->depth ) {
1120 $flag = 0;
1121 } else {
1122 $flag = Parser::PTD_FOR_INCLUSION;
1123 }
1124 $dom = $this->preprocessToDom( $text, $flag );
1125 $text = $frame->expand( $dom );
1126 } else {
1127 # if $frame is not provided, then use old-style replaceVariables
1128 $text = $this->replaceVariables( $text );
1129 }
1130
1131 wfRunHooks( 'InternalParseBeforeSanitize', array( &$this, &$text, &$this->mStripState ) );
1132 $text = Sanitizer::removeHTMLtags( $text, array( &$this, 'attributeStripCallback' ), false, array_keys( $this->mTransparentTagHooks ) );
1133 wfRunHooks( 'InternalParseBeforeLinks', array( &$this, &$text, &$this->mStripState ) );
1134
1135 # Tables need to come after variable replacement for things to work
1136 # properly; putting them before other transformations should keep
1137 # exciting things like link expansions from showing up in surprising
1138 # places.
1139 $text = $this->doTableStuff( $text );
1140
1141 $text = preg_replace( '/(^|\n)-----*/', '\\1<hr />', $text );
1142
1143 $text = $this->doDoubleUnderscore( $text );
1144
1145 $text = $this->doHeadings( $text );
1146 if ( $this->mOptions->getUseDynamicDates() ) {
1147 $df = DateFormatter::getInstance();
1148 $text = $df->reformat( $this->mOptions->getDateFormat(), $text );
1149 }
1150 $text = $this->replaceInternalLinks( $text );
1151 $text = $this->doAllQuotes( $text );
1152 $text = $this->replaceExternalLinks( $text );
1153
1154 # replaceInternalLinks may sometimes leave behind
1155 # absolute URLs, which have to be masked to hide them from replaceExternalLinks
1156 $text = str_replace( $this->mUniqPrefix.'NOPARSE', '', $text );
1157
1158 $text = $this->doMagicLinks( $text );
1159 $text = $this->formatHeadings( $text, $origText, $isMain );
1160
1161 wfProfileOut( __METHOD__ );
1162 return $text;
1163 }
1164
1165 /**
1166 * Replace special strings like "ISBN xxx" and "RFC xxx" with
1167 * magic external links.
1168 *
1169 * DML
1170 * @private
1171 *
1172 * @param $text string
1173 *
1174 * @return string
1175 */
1176 function doMagicLinks( $text ) {
1177 wfProfileIn( __METHOD__ );
1178 $prots = wfUrlProtocolsWithoutProtRel();
1179 $urlChar = self::EXT_LINK_URL_CLASS;
1180 $text = preg_replace_callback(
1181 '!(?: # Start cases
1182 (<a[ \t\r\n>].*?</a>) | # m[1]: Skip link text
1183 (<.*?>) | # m[2]: Skip stuff inside HTML elements' . "
1184 (\\b(?:$prots)$urlChar+) | # m[3]: Free external links" . '
1185 (?:RFC|PMID)\s+([0-9]+) | # m[4]: RFC or PMID, capture number
1186 ISBN\s+(\b # m[5]: ISBN, capture number
1187 (?: 97[89] [\ \-]? )? # optional 13-digit ISBN prefix
1188 (?: [0-9] [\ \-]? ){9} # 9 digits with opt. delimiters
1189 [0-9Xx] # check digit
1190 \b)
1191 )!xu', array( &$this, 'magicLinkCallback' ), $text );
1192 wfProfileOut( __METHOD__ );
1193 return $text;
1194 }
1195
1196 /**
1197 * @throws MWException
1198 * @param $m array
1199 * @return HTML|string
1200 */
1201 function magicLinkCallback( $m ) {
1202 if ( isset( $m[1] ) && $m[1] !== '' ) {
1203 # Skip anchor
1204 return $m[0];
1205 } elseif ( isset( $m[2] ) && $m[2] !== '' ) {
1206 # Skip HTML element
1207 return $m[0];
1208 } elseif ( isset( $m[3] ) && $m[3] !== '' ) {
1209 # Free external link
1210 return $this->makeFreeExternalLink( $m[0] );
1211 } elseif ( isset( $m[4] ) && $m[4] !== '' ) {
1212 # RFC or PMID
1213 if ( substr( $m[0], 0, 3 ) === 'RFC' ) {
1214 $keyword = 'RFC';
1215 $urlmsg = 'rfcurl';
1216 $CssClass = 'mw-magiclink-rfc';
1217 $id = $m[4];
1218 } elseif ( substr( $m[0], 0, 4 ) === 'PMID' ) {
1219 $keyword = 'PMID';
1220 $urlmsg = 'pubmedurl';
1221 $CssClass = 'mw-magiclink-pmid';
1222 $id = $m[4];
1223 } else {
1224 throw new MWException( __METHOD__.': unrecognised match type "' .
1225 substr( $m[0], 0, 20 ) . '"' );
1226 }
1227 $url = wfMsgForContent( $urlmsg, $id );
1228 return Linker::makeExternalLink( $url, "{$keyword} {$id}", true, $CssClass );
1229 } elseif ( isset( $m[5] ) && $m[5] !== '' ) {
1230 # ISBN
1231 $isbn = $m[5];
1232 $num = strtr( $isbn, array(
1233 '-' => '',
1234 ' ' => '',
1235 'x' => 'X',
1236 ));
1237 $titleObj = SpecialPage::getTitleFor( 'Booksources', $num );
1238 return'<a href="' .
1239 htmlspecialchars( $titleObj->getLocalUrl() ) .
1240 "\" class=\"internal mw-magiclink-isbn\">ISBN $isbn</a>";
1241 } else {
1242 return $m[0];
1243 }
1244 }
1245
1246 /**
1247 * Make a free external link, given a user-supplied URL
1248 *
1249 * @param $url string
1250 *
1251 * @return string HTML
1252 * @private
1253 */
1254 function makeFreeExternalLink( $url ) {
1255 wfProfileIn( __METHOD__ );
1256
1257 $trail = '';
1258
1259 # The characters '<' and '>' (which were escaped by
1260 # removeHTMLtags()) should not be included in
1261 # URLs, per RFC 2396.
1262 $m2 = array();
1263 if ( preg_match( '/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE ) ) {
1264 $trail = substr( $url, $m2[0][1] ) . $trail;
1265 $url = substr( $url, 0, $m2[0][1] );
1266 }
1267
1268 # Move trailing punctuation to $trail
1269 $sep = ',;\.:!?';
1270 # If there is no left bracket, then consider right brackets fair game too
1271 if ( strpos( $url, '(' ) === false ) {
1272 $sep .= ')';
1273 }
1274
1275 $numSepChars = strspn( strrev( $url ), $sep );
1276 if ( $numSepChars ) {
1277 $trail = substr( $url, -$numSepChars ) . $trail;
1278 $url = substr( $url, 0, -$numSepChars );
1279 }
1280
1281 $url = Sanitizer::cleanUrl( $url );
1282
1283 # Is this an external image?
1284 $text = $this->maybeMakeExternalImage( $url );
1285 if ( $text === false ) {
1286 # Not an image, make a link
1287 $text = Linker::makeExternalLink( $url,
1288 $this->getConverterLanguage()->markNoConversion($url), true, 'free',
1289 $this->getExternalLinkAttribs( $url ) );
1290 # Register it in the output object...
1291 # Replace unnecessary URL escape codes with their equivalent characters
1292 $pasteurized = self::replaceUnusualEscapes( $url );
1293 $this->mOutput->addExternalLink( $pasteurized );
1294 }
1295 wfProfileOut( __METHOD__ );
1296 return $text . $trail;
1297 }
1298
1299
1300 /**
1301 * Parse headers and return html
1302 *
1303 * @private
1304 *
1305 * @param $text string
1306 *
1307 * @return string
1308 */
1309 function doHeadings( $text ) {
1310 wfProfileIn( __METHOD__ );
1311 for ( $i = 6; $i >= 1; --$i ) {
1312 $h = str_repeat( '=', $i );
1313 $text = preg_replace( "/^$h(.+)$h\\s*$/m",
1314 "<h$i>\\1</h$i>", $text );
1315 }
1316 wfProfileOut( __METHOD__ );
1317 return $text;
1318 }
1319
1320 /**
1321 * Replace single quotes with HTML markup
1322 * @private
1323 *
1324 * @param $text string
1325 *
1326 * @return string the altered text
1327 */
1328 function doAllQuotes( $text ) {
1329 wfProfileIn( __METHOD__ );
1330 $outtext = '';
1331 $lines = StringUtils::explode( "\n", $text );
1332 foreach ( $lines as $line ) {
1333 $outtext .= $this->doQuotes( $line ) . "\n";
1334 }
1335 $outtext = substr( $outtext, 0,-1 );
1336 wfProfileOut( __METHOD__ );
1337 return $outtext;
1338 }
1339
1340 /**
1341 * Helper function for doAllQuotes()
1342 *
1343 * @param $text string
1344 *
1345 * @return string
1346 */
1347 public function doQuotes( $text ) {
1348 $arr = preg_split( "/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE );
1349 if ( count( $arr ) == 1 ) {
1350 return $text;
1351 } else {
1352 # First, do some preliminary work. This may shift some apostrophes from
1353 # being mark-up to being text. It also counts the number of occurrences
1354 # of bold and italics mark-ups.
1355 $numbold = 0;
1356 $numitalics = 0;
1357 for ( $i = 0; $i < count( $arr ); $i++ ) {
1358 if ( ( $i % 2 ) == 1 ) {
1359 # If there are ever four apostrophes, assume the first is supposed to
1360 # be text, and the remaining three constitute mark-up for bold text.
1361 if ( strlen( $arr[$i] ) == 4 ) {
1362 $arr[$i-1] .= "'";
1363 $arr[$i] = "'''";
1364 } elseif ( strlen( $arr[$i] ) > 5 ) {
1365 # If there are more than 5 apostrophes in a row, assume they're all
1366 # text except for the last 5.
1367 $arr[$i-1] .= str_repeat( "'", strlen( $arr[$i] ) - 5 );
1368 $arr[$i] = "'''''";
1369 }
1370 # Count the number of occurrences of bold and italics mark-ups.
1371 # We are not counting sequences of five apostrophes.
1372 if ( strlen( $arr[$i] ) == 2 ) {
1373 $numitalics++;
1374 } elseif ( strlen( $arr[$i] ) == 3 ) {
1375 $numbold++;
1376 } elseif ( strlen( $arr[$i] ) == 5 ) {
1377 $numitalics++;
1378 $numbold++;
1379 }
1380 }
1381 }
1382
1383 # If there is an odd number of both bold and italics, it is likely
1384 # that one of the bold ones was meant to be an apostrophe followed
1385 # by italics. Which one we cannot know for certain, but it is more
1386 # likely to be one that has a single-letter word before it.
1387 if ( ( $numbold % 2 == 1 ) && ( $numitalics % 2 == 1 ) ) {
1388 $i = 0;
1389 $firstsingleletterword = -1;
1390 $firstmultiletterword = -1;
1391 $firstspace = -1;
1392 foreach ( $arr as $r ) {
1393 if ( ( $i % 2 == 1 ) and ( strlen( $r ) == 3 ) ) {
1394 $x1 = substr( $arr[$i-1], -1 );
1395 $x2 = substr( $arr[$i-1], -2, 1 );
1396 if ( $x1 === ' ' ) {
1397 if ( $firstspace == -1 ) {
1398 $firstspace = $i;
1399 }
1400 } elseif ( $x2 === ' ') {
1401 if ( $firstsingleletterword == -1 ) {
1402 $firstsingleletterword = $i;
1403 }
1404 } else {
1405 if ( $firstmultiletterword == -1 ) {
1406 $firstmultiletterword = $i;
1407 }
1408 }
1409 }
1410 $i++;
1411 }
1412
1413 # If there is a single-letter word, use it!
1414 if ( $firstsingleletterword > -1 ) {
1415 $arr[$firstsingleletterword] = "''";
1416 $arr[$firstsingleletterword-1] .= "'";
1417 } elseif ( $firstmultiletterword > -1 ) {
1418 # If not, but there's a multi-letter word, use that one.
1419 $arr[$firstmultiletterword] = "''";
1420 $arr[$firstmultiletterword-1] .= "'";
1421 } elseif ( $firstspace > -1 ) {
1422 # ... otherwise use the first one that has neither.
1423 # (notice that it is possible for all three to be -1 if, for example,
1424 # there is only one pentuple-apostrophe in the line)
1425 $arr[$firstspace] = "''";
1426 $arr[$firstspace-1] .= "'";
1427 }
1428 }
1429
1430 # Now let's actually convert our apostrophic mush to HTML!
1431 $output = '';
1432 $buffer = '';
1433 $state = '';
1434 $i = 0;
1435 foreach ( $arr as $r ) {
1436 if ( ( $i % 2 ) == 0 ) {
1437 if ( $state === 'both' ) {
1438 $buffer .= $r;
1439 } else {
1440 $output .= $r;
1441 }
1442 } else {
1443 if ( strlen( $r ) == 2 ) {
1444 if ( $state === 'i' ) {
1445 $output .= '</i>'; $state = '';
1446 } elseif ( $state === 'bi' ) {
1447 $output .= '</i>'; $state = 'b';
1448 } elseif ( $state === 'ib' ) {
1449 $output .= '</b></i><b>'; $state = 'b';
1450 } elseif ( $state === 'both' ) {
1451 $output .= '<b><i>'.$buffer.'</i>'; $state = 'b';
1452 } else { # $state can be 'b' or ''
1453 $output .= '<i>'; $state .= 'i';
1454 }
1455 } elseif ( strlen( $r ) == 3 ) {
1456 if ( $state === 'b' ) {
1457 $output .= '</b>'; $state = '';
1458 } elseif ( $state === 'bi' ) {
1459 $output .= '</i></b><i>'; $state = 'i';
1460 } elseif ( $state === 'ib' ) {
1461 $output .= '</b>'; $state = 'i';
1462 } elseif ( $state === 'both' ) {
1463 $output .= '<i><b>'.$buffer.'</b>'; $state = 'i';
1464 } else { # $state can be 'i' or ''
1465 $output .= '<b>'; $state .= 'b';
1466 }
1467 } elseif ( strlen( $r ) == 5 ) {
1468 if ( $state === 'b' ) {
1469 $output .= '</b><i>'; $state = 'i';
1470 } elseif ( $state === 'i' ) {
1471 $output .= '</i><b>'; $state = 'b';
1472 } elseif ( $state === 'bi' ) {
1473 $output .= '</i></b>'; $state = '';
1474 } elseif ( $state === 'ib' ) {
1475 $output .= '</b></i>'; $state = '';
1476 } elseif ( $state === 'both' ) {
1477 $output .= '<i><b>'.$buffer.'</b></i>'; $state = '';
1478 } else { # ($state == '')
1479 $buffer = ''; $state = 'both';
1480 }
1481 }
1482 }
1483 $i++;
1484 }
1485 # Now close all remaining tags. Notice that the order is important.
1486 if ( $state === 'b' || $state === 'ib' ) {
1487 $output .= '</b>';
1488 }
1489 if ( $state === 'i' || $state === 'bi' || $state === 'ib' ) {
1490 $output .= '</i>';
1491 }
1492 if ( $state === 'bi' ) {
1493 $output .= '</b>';
1494 }
1495 # There might be lonely ''''', so make sure we have a buffer
1496 if ( $state === 'both' && $buffer ) {
1497 $output .= '<b><i>'.$buffer.'</i></b>';
1498 }
1499 return $output;
1500 }
1501 }
1502
1503 /**
1504 * Replace external links (REL)
1505 *
1506 * Note: this is all very hackish and the order of execution matters a lot.
1507 * Make sure to run maintenance/parserTests.php if you change this code.
1508 *
1509 * @private
1510 *
1511 * @param $text string
1512 *
1513 * @return string
1514 */
1515 function replaceExternalLinks( $text ) {
1516 wfProfileIn( __METHOD__ );
1517
1518 $bits = preg_split( $this->mExtLinkBracketedRegex, $text, -1, PREG_SPLIT_DELIM_CAPTURE );
1519 $s = array_shift( $bits );
1520
1521 $i = 0;
1522 while ( $i<count( $bits ) ) {
1523 $url = $bits[$i++];
1524 $protocol = $bits[$i++];
1525 $text = $bits[$i++];
1526 $trail = $bits[$i++];
1527
1528 # The characters '<' and '>' (which were escaped by
1529 # removeHTMLtags()) should not be included in
1530 # URLs, per RFC 2396.
1531 $m2 = array();
1532 if ( preg_match( '/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE ) ) {
1533 $text = substr( $url, $m2[0][1] ) . ' ' . $text;
1534 $url = substr( $url, 0, $m2[0][1] );
1535 }
1536
1537 # If the link text is an image URL, replace it with an <img> tag
1538 # This happened by accident in the original parser, but some people used it extensively
1539 $img = $this->maybeMakeExternalImage( $text );
1540 if ( $img !== false ) {
1541 $text = $img;
1542 }
1543
1544 $dtrail = '';
1545
1546 # Set linktype for CSS - if URL==text, link is essentially free
1547 $linktype = ( $text === $url ) ? 'free' : 'text';
1548
1549 # No link text, e.g. [http://domain.tld/some.link]
1550 if ( $text == '' ) {
1551 # Autonumber
1552 $langObj = $this->getTargetLanguage();
1553 $text = '[' . $langObj->formatNum( ++$this->mAutonumber ) . ']';
1554 $linktype = 'autonumber';
1555 } else {
1556 # Have link text, e.g. [http://domain.tld/some.link text]s
1557 # Check for trail
1558 list( $dtrail, $trail ) = Linker::splitTrail( $trail );
1559 }
1560
1561 $text = $this->getConverterLanguage()->markNoConversion( $text );
1562
1563 $url = Sanitizer::cleanUrl( $url );
1564
1565 # Use the encoded URL
1566 # This means that users can paste URLs directly into the text
1567 # Funny characters like ö aren't valid in URLs anyway
1568 # This was changed in August 2004
1569 $s .= Linker::makeExternalLink( $url, $text, false, $linktype,
1570 $this->getExternalLinkAttribs( $url ) ) . $dtrail . $trail;
1571
1572 # Register link in the output object.
1573 # Replace unnecessary URL escape codes with the referenced character
1574 # This prevents spammers from hiding links from the filters
1575 $pasteurized = self::replaceUnusualEscapes( $url );
1576 $this->mOutput->addExternalLink( $pasteurized );
1577 }
1578
1579 wfProfileOut( __METHOD__ );
1580 return $s;
1581 }
1582
1583 /**
1584 * Get an associative array of additional HTML attributes appropriate for a
1585 * particular external link. This currently may include rel => nofollow
1586 * (depending on configuration, namespace, and the URL's domain) and/or a
1587 * target attribute (depending on configuration).
1588 *
1589 * @param $url String|bool optional URL, to extract the domain from for rel =>
1590 * nofollow if appropriate
1591 * @return Array associative array of HTML attributes
1592 */
1593 function getExternalLinkAttribs( $url = false ) {
1594 $attribs = array();
1595 global $wgNoFollowLinks, $wgNoFollowNsExceptions, $wgNoFollowDomainExceptions;
1596 $ns = $this->mTitle->getNamespace();
1597 if ( $wgNoFollowLinks && !in_array( $ns, $wgNoFollowNsExceptions ) &&
1598 !wfMatchesDomainList( $url, $wgNoFollowDomainExceptions ) )
1599 {
1600 $attribs['rel'] = 'nofollow';
1601 }
1602 if ( $this->mOptions->getExternalLinkTarget() ) {
1603 $attribs['target'] = $this->mOptions->getExternalLinkTarget();
1604 }
1605 return $attribs;
1606 }
1607
1608 /**
1609 * Replace unusual URL escape codes with their equivalent characters
1610 *
1611 * @param $url String
1612 * @return String
1613 *
1614 * @todo This can merge genuinely required bits in the path or query string,
1615 * breaking legit URLs. A proper fix would treat the various parts of
1616 * the URL differently; as a workaround, just use the output for
1617 * statistical records, not for actual linking/output.
1618 */
1619 static function replaceUnusualEscapes( $url ) {
1620 return preg_replace_callback( '/%[0-9A-Fa-f]{2}/',
1621 array( __CLASS__, 'replaceUnusualEscapesCallback' ), $url );
1622 }
1623
1624 /**
1625 * Callback function used in replaceUnusualEscapes().
1626 * Replaces unusual URL escape codes with their equivalent character
1627 *
1628 * @param $matches array
1629 *
1630 * @return string
1631 */
1632 private static function replaceUnusualEscapesCallback( $matches ) {
1633 $char = urldecode( $matches[0] );
1634 $ord = ord( $char );
1635 # Is it an unsafe or HTTP reserved character according to RFC 1738?
1636 if ( $ord > 32 && $ord < 127 && strpos( '<>"#{}|\^~[]`;/?', $char ) === false ) {
1637 # No, shouldn't be escaped
1638 return $char;
1639 } else {
1640 # Yes, leave it escaped
1641 return $matches[0];
1642 }
1643 }
1644
1645 /**
1646 * make an image if it's allowed, either through the global
1647 * option, through the exception, or through the on-wiki whitelist
1648 * @private
1649 *
1650 * $param $url string
1651 *
1652 * @return string
1653 */
1654 function maybeMakeExternalImage( $url ) {
1655 $imagesfrom = $this->mOptions->getAllowExternalImagesFrom();
1656 $imagesexception = !empty( $imagesfrom );
1657 $text = false;
1658 # $imagesfrom could be either a single string or an array of strings, parse out the latter
1659 if ( $imagesexception && is_array( $imagesfrom ) ) {
1660 $imagematch = false;
1661 foreach ( $imagesfrom as $match ) {
1662 if ( strpos( $url, $match ) === 0 ) {
1663 $imagematch = true;
1664 break;
1665 }
1666 }
1667 } elseif ( $imagesexception ) {
1668 $imagematch = ( strpos( $url, $imagesfrom ) === 0 );
1669 } else {
1670 $imagematch = false;
1671 }
1672 if ( $this->mOptions->getAllowExternalImages()
1673 || ( $imagesexception && $imagematch ) ) {
1674 if ( preg_match( self::EXT_IMAGE_REGEX, $url ) ) {
1675 # Image found
1676 $text = Linker::makeExternalImage( $url );
1677 }
1678 }
1679 if ( !$text && $this->mOptions->getEnableImageWhitelist()
1680 && preg_match( self::EXT_IMAGE_REGEX, $url ) ) {
1681 $whitelist = explode( "\n", wfMsgForContent( 'external_image_whitelist' ) );
1682 foreach ( $whitelist as $entry ) {
1683 # Sanitize the regex fragment, make it case-insensitive, ignore blank entries/comments
1684 if ( strpos( $entry, '#' ) === 0 || $entry === '' ) {
1685 continue;
1686 }
1687 if ( preg_match( '/' . str_replace( '/', '\\/', $entry ) . '/i', $url ) ) {
1688 # Image matches a whitelist entry
1689 $text = Linker::makeExternalImage( $url );
1690 break;
1691 }
1692 }
1693 }
1694 return $text;
1695 }
1696
1697 /**
1698 * Process [[ ]] wikilinks
1699 *
1700 * @param $s string
1701 *
1702 * @return String: processed text
1703 *
1704 * @private
1705 */
1706 function replaceInternalLinks( $s ) {
1707 $this->mLinkHolders->merge( $this->replaceInternalLinks2( $s ) );
1708 return $s;
1709 }
1710
1711 /**
1712 * Process [[ ]] wikilinks (RIL)
1713 * @return LinkHolderArray
1714 *
1715 * @private
1716 */
1717 function replaceInternalLinks2( &$s ) {
1718 wfProfileIn( __METHOD__ );
1719
1720 wfProfileIn( __METHOD__.'-setup' );
1721 static $tc = FALSE, $e1, $e1_img;
1722 # the % is needed to support urlencoded titles as well
1723 if ( !$tc ) {
1724 $tc = Title::legalChars() . '#%';
1725 # Match a link having the form [[namespace:link|alternate]]trail
1726 $e1 = "/^([{$tc}]+)(?:\\|(.+?))?]](.*)\$/sD";
1727 # Match cases where there is no "]]", which might still be images
1728 $e1_img = "/^([{$tc}]+)\\|(.*)\$/sD";
1729 }
1730
1731 $holders = new LinkHolderArray( $this );
1732
1733 # split the entire text string on occurrences of [[
1734 $a = StringUtils::explode( '[[', ' ' . $s );
1735 # get the first element (all text up to first [[), and remove the space we added
1736 $s = $a->current();
1737 $a->next();
1738 $line = $a->current(); # Workaround for broken ArrayIterator::next() that returns "void"
1739 $s = substr( $s, 1 );
1740
1741 $useLinkPrefixExtension = $this->getTargetLanguage()->linkPrefixExtension();
1742 $e2 = null;
1743 if ( $useLinkPrefixExtension ) {
1744 # Match the end of a line for a word that's not followed by whitespace,
1745 # e.g. in the case of 'The Arab al[[Razi]]', 'al' will be matched
1746 $e2 = wfMsgForContent( 'linkprefix' );
1747 }
1748
1749 if ( is_null( $this->mTitle ) ) {
1750 wfProfileOut( __METHOD__.'-setup' );
1751 wfProfileOut( __METHOD__ );
1752 throw new MWException( __METHOD__.": \$this->mTitle is null\n" );
1753 }
1754 $nottalk = !$this->mTitle->isTalkPage();
1755
1756 if ( $useLinkPrefixExtension ) {
1757 $m = array();
1758 if ( preg_match( $e2, $s, $m ) ) {
1759 $first_prefix = $m[2];
1760 } else {
1761 $first_prefix = false;
1762 }
1763 } else {
1764 $prefix = '';
1765 }
1766
1767 if ( $this->getConverterLanguage()->hasVariants() ) {
1768 $selflink = $this->getConverterLanguage()->autoConvertToAllVariants(
1769 $this->mTitle->getPrefixedText() );
1770 } else {
1771 $selflink = array( $this->mTitle->getPrefixedText() );
1772 }
1773 $useSubpages = $this->areSubpagesAllowed();
1774 wfProfileOut( __METHOD__.'-setup' );
1775
1776 # Loop for each link
1777 for ( ; $line !== false && $line !== null ; $a->next(), $line = $a->current() ) {
1778 # Check for excessive memory usage
1779 if ( $holders->isBig() ) {
1780 # Too big
1781 # Do the existence check, replace the link holders and clear the array
1782 $holders->replace( $s );
1783 $holders->clear();
1784 }
1785
1786 if ( $useLinkPrefixExtension ) {
1787 wfProfileIn( __METHOD__.'-prefixhandling' );
1788 if ( preg_match( $e2, $s, $m ) ) {
1789 $prefix = $m[2];
1790 $s = $m[1];
1791 } else {
1792 $prefix='';
1793 }
1794 # first link
1795 if ( $first_prefix ) {
1796 $prefix = $first_prefix;
1797 $first_prefix = false;
1798 }
1799 wfProfileOut( __METHOD__.'-prefixhandling' );
1800 }
1801
1802 $might_be_img = false;
1803
1804 wfProfileIn( __METHOD__."-e1" );
1805 if ( preg_match( $e1, $line, $m ) ) { # page with normal text or alt
1806 $text = $m[2];
1807 # If we get a ] at the beginning of $m[3] that means we have a link that's something like:
1808 # [[Image:Foo.jpg|[http://example.com desc]]] <- having three ] in a row fucks up,
1809 # the real problem is with the $e1 regex
1810 # See bug 1300.
1811 #
1812 # Still some problems for cases where the ] is meant to be outside punctuation,
1813 # and no image is in sight. See bug 2095.
1814 #
1815 if ( $text !== '' &&
1816 substr( $m[3], 0, 1 ) === ']' &&
1817 strpos( $text, '[' ) !== false
1818 )
1819 {
1820 $text .= ']'; # so that replaceExternalLinks($text) works later
1821 $m[3] = substr( $m[3], 1 );
1822 }
1823 # fix up urlencoded title texts
1824 if ( strpos( $m[1], '%' ) !== false ) {
1825 # Should anchors '#' also be rejected?
1826 $m[1] = str_replace( array('<', '>'), array('&lt;', '&gt;'), rawurldecode( $m[1] ) );
1827 }
1828 $trail = $m[3];
1829 } elseif ( preg_match( $e1_img, $line, $m ) ) { # Invalid, but might be an image with a link in its caption
1830 $might_be_img = true;
1831 $text = $m[2];
1832 if ( strpos( $m[1], '%' ) !== false ) {
1833 $m[1] = rawurldecode( $m[1] );
1834 }
1835 $trail = "";
1836 } else { # Invalid form; output directly
1837 $s .= $prefix . '[[' . $line ;
1838 wfProfileOut( __METHOD__."-e1" );
1839 continue;
1840 }
1841 wfProfileOut( __METHOD__."-e1" );
1842 wfProfileIn( __METHOD__."-misc" );
1843
1844 # Don't allow internal links to pages containing
1845 # PROTO: where PROTO is a valid URL protocol; these
1846 # should be external links.
1847 if ( preg_match( '/^(?:' . $this->mUrlProtocols . ')/', $m[1] ) ) {
1848 $s .= $prefix . '[[' . $line ;
1849 wfProfileOut( __METHOD__."-misc" );
1850 continue;
1851 }
1852
1853 # Make subpage if necessary
1854 if ( $useSubpages ) {
1855 $link = $this->maybeDoSubpageLink( $m[1], $text );
1856 } else {
1857 $link = $m[1];
1858 }
1859
1860 $noforce = ( substr( $m[1], 0, 1 ) !== ':' );
1861 if ( !$noforce ) {
1862 # Strip off leading ':'
1863 $link = substr( $link, 1 );
1864 }
1865
1866 wfProfileOut( __METHOD__."-misc" );
1867 wfProfileIn( __METHOD__."-title" );
1868 $nt = Title::newFromText( $this->mStripState->unstripNoWiki( $link ) );
1869 if ( $nt === null ) {
1870 $s .= $prefix . '[[' . $line;
1871 wfProfileOut( __METHOD__."-title" );
1872 continue;
1873 }
1874
1875 $ns = $nt->getNamespace();
1876 $iw = $nt->getInterWiki();
1877 wfProfileOut( __METHOD__."-title" );
1878
1879 if ( $might_be_img ) { # if this is actually an invalid link
1880 wfProfileIn( __METHOD__."-might_be_img" );
1881 if ( $ns == NS_FILE && $noforce ) { # but might be an image
1882 $found = false;
1883 while ( true ) {
1884 # look at the next 'line' to see if we can close it there
1885 $a->next();
1886 $next_line = $a->current();
1887 if ( $next_line === false || $next_line === null ) {
1888 break;
1889 }
1890 $m = explode( ']]', $next_line, 3 );
1891 if ( count( $m ) == 3 ) {
1892 # the first ]] closes the inner link, the second the image
1893 $found = true;
1894 $text .= "[[{$m[0]}]]{$m[1]}";
1895 $trail = $m[2];
1896 break;
1897 } elseif ( count( $m ) == 2 ) {
1898 # if there's exactly one ]] that's fine, we'll keep looking
1899 $text .= "[[{$m[0]}]]{$m[1]}";
1900 } else {
1901 # if $next_line is invalid too, we need look no further
1902 $text .= '[[' . $next_line;
1903 break;
1904 }
1905 }
1906 if ( !$found ) {
1907 # we couldn't find the end of this imageLink, so output it raw
1908 # but don't ignore what might be perfectly normal links in the text we've examined
1909 $holders->merge( $this->replaceInternalLinks2( $text ) );
1910 $s .= "{$prefix}[[$link|$text";
1911 # note: no $trail, because without an end, there *is* no trail
1912 wfProfileOut( __METHOD__."-might_be_img" );
1913 continue;
1914 }
1915 } else { # it's not an image, so output it raw
1916 $s .= "{$prefix}[[$link|$text";
1917 # note: no $trail, because without an end, there *is* no trail
1918 wfProfileOut( __METHOD__."-might_be_img" );
1919 continue;
1920 }
1921 wfProfileOut( __METHOD__."-might_be_img" );
1922 }
1923
1924 $wasblank = ( $text == '' );
1925 if ( $wasblank ) {
1926 $text = $link;
1927 } else {
1928 # Bug 4598 madness. Handle the quotes only if they come from the alternate part
1929 # [[Lista d''e paise d''o munno]] -> <a href="...">Lista d''e paise d''o munno</a>
1930 # [[Criticism of Harry Potter|Criticism of ''Harry Potter'']]
1931 # -> <a href="Criticism of Harry Potter">Criticism of <i>Harry Potter</i></a>
1932 $text = $this->doQuotes( $text );
1933 }
1934
1935 # Link not escaped by : , create the various objects
1936 if ( $noforce ) {
1937 # Interwikis
1938 wfProfileIn( __METHOD__."-interwiki" );
1939 if ( $iw && $this->mOptions->getInterwikiMagic() && $nottalk && Language::fetchLanguageName( $iw, null, 'mw' ) ) {
1940 $this->mOutput->addLanguageLink( $nt->getFullText() );
1941 $s = rtrim( $s . $prefix );
1942 $s .= trim( $trail, "\n" ) == '' ? '': $prefix . $trail;
1943 wfProfileOut( __METHOD__."-interwiki" );
1944 continue;
1945 }
1946 wfProfileOut( __METHOD__."-interwiki" );
1947
1948 if ( $ns == NS_FILE ) {
1949 wfProfileIn( __METHOD__."-image" );
1950 if ( !wfIsBadImage( $nt->getDBkey(), $this->mTitle ) ) {
1951 if ( $wasblank ) {
1952 # if no parameters were passed, $text
1953 # becomes something like "File:Foo.png",
1954 # which we don't want to pass on to the
1955 # image generator
1956 $text = '';
1957 } else {
1958 # recursively parse links inside the image caption
1959 # actually, this will parse them in any other parameters, too,
1960 # but it might be hard to fix that, and it doesn't matter ATM
1961 $text = $this->replaceExternalLinks( $text );
1962 $holders->merge( $this->replaceInternalLinks2( $text ) );
1963 }
1964 # cloak any absolute URLs inside the image markup, so replaceExternalLinks() won't touch them
1965 $s .= $prefix . $this->armorLinks(
1966 $this->makeImage( $nt, $text, $holders ) ) . $trail;
1967 } else {
1968 $s .= $prefix . $trail;
1969 }
1970 wfProfileOut( __METHOD__."-image" );
1971 continue;
1972 }
1973
1974 if ( $ns == NS_CATEGORY ) {
1975 wfProfileIn( __METHOD__."-category" );
1976 $s = rtrim( $s . "\n" ); # bug 87
1977
1978 if ( $wasblank ) {
1979 $sortkey = $this->getDefaultSort();
1980 } else {
1981 $sortkey = $text;
1982 }
1983 $sortkey = Sanitizer::decodeCharReferences( $sortkey );
1984 $sortkey = str_replace( "\n", '', $sortkey );
1985 $sortkey = $this->getConverterLanguage()->convertCategoryKey( $sortkey );
1986 $this->mOutput->addCategory( $nt->getDBkey(), $sortkey );
1987
1988 /**
1989 * Strip the whitespace Category links produce, see bug 87
1990 * @todo We might want to use trim($tmp, "\n") here.
1991 */
1992 $s .= trim( $prefix . $trail, "\n" ) == '' ? '' : $prefix . $trail;
1993
1994 wfProfileOut( __METHOD__."-category" );
1995 continue;
1996 }
1997 }
1998
1999 # Self-link checking
2000 if ( $nt->getFragment() === '' && $ns != NS_SPECIAL ) {
2001 if ( in_array( $nt->getPrefixedText(), $selflink, true ) ) {
2002 $s .= $prefix . Linker::makeSelfLinkObj( $nt, $text, '', $trail );
2003 continue;
2004 }
2005 }
2006
2007 # NS_MEDIA is a pseudo-namespace for linking directly to a file
2008 # @todo FIXME: Should do batch file existence checks, see comment below
2009 if ( $ns == NS_MEDIA ) {
2010 wfProfileIn( __METHOD__."-media" );
2011 # Give extensions a chance to select the file revision for us
2012 $options = array();
2013 $descQuery = false;
2014 wfRunHooks( 'BeforeParserFetchFileAndTitle',
2015 array( $this, $nt, &$options, &$descQuery ) );
2016 # Fetch and register the file (file title may be different via hooks)
2017 list( $file, $nt ) = $this->fetchFileAndTitle( $nt, $options );
2018 # Cloak with NOPARSE to avoid replacement in replaceExternalLinks
2019 $s .= $prefix . $this->armorLinks(
2020 Linker::makeMediaLinkFile( $nt, $file, $text ) ) . $trail;
2021 wfProfileOut( __METHOD__."-media" );
2022 continue;
2023 }
2024
2025 wfProfileIn( __METHOD__."-always_known" );
2026 # Some titles, such as valid special pages or files in foreign repos, should
2027 # be shown as bluelinks even though they're not included in the page table
2028 #
2029 # @todo FIXME: isAlwaysKnown() can be expensive for file links; we should really do
2030 # batch file existence checks for NS_FILE and NS_MEDIA
2031 if ( $iw == '' && $nt->isAlwaysKnown() ) {
2032 $this->mOutput->addLink( $nt );
2033 $s .= $this->makeKnownLinkHolder( $nt, $text, array(), $trail, $prefix );
2034 } else {
2035 # Links will be added to the output link list after checking
2036 $s .= $holders->makeHolder( $nt, $text, array(), $trail, $prefix );
2037 }
2038 wfProfileOut( __METHOD__."-always_known" );
2039 }
2040 wfProfileOut( __METHOD__ );
2041 return $holders;
2042 }
2043
2044 /**
2045 * Render a forced-blue link inline; protect against double expansion of
2046 * URLs if we're in a mode that prepends full URL prefixes to internal links.
2047 * Since this little disaster has to split off the trail text to avoid
2048 * breaking URLs in the following text without breaking trails on the
2049 * wiki links, it's been made into a horrible function.
2050 *
2051 * @param $nt Title
2052 * @param $text String
2053 * @param $query Array or String
2054 * @param $trail String
2055 * @param $prefix String
2056 * @return String: HTML-wikitext mix oh yuck
2057 */
2058 function makeKnownLinkHolder( $nt, $text = '', $query = array(), $trail = '', $prefix = '' ) {
2059 list( $inside, $trail ) = Linker::splitTrail( $trail );
2060
2061 if ( is_string( $query ) ) {
2062 $query = wfCgiToArray( $query );
2063 }
2064 if ( $text == '' ) {
2065 $text = htmlspecialchars( $nt->getPrefixedText() );
2066 }
2067
2068 $link = Linker::linkKnown( $nt, "$prefix$text$inside", array(), $query );
2069
2070 return $this->armorLinks( $link ) . $trail;
2071 }
2072
2073 /**
2074 * Insert a NOPARSE hacky thing into any inline links in a chunk that's
2075 * going to go through further parsing steps before inline URL expansion.
2076 *
2077 * Not needed quite as much as it used to be since free links are a bit
2078 * more sensible these days. But bracketed links are still an issue.
2079 *
2080 * @param $text String: more-or-less HTML
2081 * @return String: less-or-more HTML with NOPARSE bits
2082 */
2083 function armorLinks( $text ) {
2084 return preg_replace( '/\b(' . $this->mUrlProtocols . ')/',
2085 "{$this->mUniqPrefix}NOPARSE$1", $text );
2086 }
2087
2088 /**
2089 * Return true if subpage links should be expanded on this page.
2090 * @return Boolean
2091 */
2092 function areSubpagesAllowed() {
2093 # Some namespaces don't allow subpages
2094 return MWNamespace::hasSubpages( $this->mTitle->getNamespace() );
2095 }
2096
2097 /**
2098 * Handle link to subpage if necessary
2099 *
2100 * @param $target String: the source of the link
2101 * @param &$text String: the link text, modified as necessary
2102 * @return string the full name of the link
2103 * @private
2104 */
2105 function maybeDoSubpageLink( $target, &$text ) {
2106 return Linker::normalizeSubpageLink( $this->mTitle, $target, $text );
2107 }
2108
2109 /**#@+
2110 * Used by doBlockLevels()
2111 * @private
2112 *
2113 * @return string
2114 */
2115 function closeParagraph() {
2116 $result = '';
2117 if ( $this->mLastSection != '' ) {
2118 $result = '</' . $this->mLastSection . ">\n";
2119 }
2120 $this->mInPre = false;
2121 $this->mLastSection = '';
2122 return $result;
2123 }
2124
2125 /**
2126 * getCommon() returns the length of the longest common substring
2127 * of both arguments, starting at the beginning of both.
2128 * @private
2129 *
2130 * @param $st1 string
2131 * @param $st2 string
2132 *
2133 * @return int
2134 */
2135 function getCommon( $st1, $st2 ) {
2136 $fl = strlen( $st1 );
2137 $shorter = strlen( $st2 );
2138 if ( $fl < $shorter ) {
2139 $shorter = $fl;
2140 }
2141
2142 for ( $i = 0; $i < $shorter; ++$i ) {
2143 if ( $st1[$i] != $st2[$i] ) {
2144 break;
2145 }
2146 }
2147 return $i;
2148 }
2149
2150 /**
2151 * These next three functions open, continue, and close the list
2152 * element appropriate to the prefix character passed into them.
2153 * @private
2154 *
2155 * @param $char string
2156 *
2157 * @return string
2158 */
2159 function openList( $char ) {
2160 $result = $this->closeParagraph();
2161
2162 if ( '*' === $char ) {
2163 $result .= '<ul><li>';
2164 } elseif ( '#' === $char ) {
2165 $result .= '<ol><li>';
2166 } elseif ( ':' === $char ) {
2167 $result .= '<dl><dd>';
2168 } elseif ( ';' === $char ) {
2169 $result .= '<dl><dt>';
2170 $this->mDTopen = true;
2171 } else {
2172 $result = '<!-- ERR 1 -->';
2173 }
2174
2175 return $result;
2176 }
2177
2178 /**
2179 * TODO: document
2180 * @param $char String
2181 * @private
2182 *
2183 * @return string
2184 */
2185 function nextItem( $char ) {
2186 if ( '*' === $char || '#' === $char ) {
2187 return '</li><li>';
2188 } elseif ( ':' === $char || ';' === $char ) {
2189 $close = '</dd>';
2190 if ( $this->mDTopen ) {
2191 $close = '</dt>';
2192 }
2193 if ( ';' === $char ) {
2194 $this->mDTopen = true;
2195 return $close . '<dt>';
2196 } else {
2197 $this->mDTopen = false;
2198 return $close . '<dd>';
2199 }
2200 }
2201 return '<!-- ERR 2 -->';
2202 }
2203
2204 /**
2205 * TODO: document
2206 * @param $char String
2207 * @private
2208 *
2209 * @return string
2210 */
2211 function closeList( $char ) {
2212 if ( '*' === $char ) {
2213 $text = '</li></ul>';
2214 } elseif ( '#' === $char ) {
2215 $text = '</li></ol>';
2216 } elseif ( ':' === $char ) {
2217 if ( $this->mDTopen ) {
2218 $this->mDTopen = false;
2219 $text = '</dt></dl>';
2220 } else {
2221 $text = '</dd></dl>';
2222 }
2223 } else {
2224 return '<!-- ERR 3 -->';
2225 }
2226 return $text."\n";
2227 }
2228 /**#@-*/
2229
2230 /**
2231 * Make lists from lines starting with ':', '*', '#', etc. (DBL)
2232 *
2233 * @param $text String
2234 * @param $linestart Boolean: whether or not this is at the start of a line.
2235 * @private
2236 * @return string the lists rendered as HTML
2237 */
2238 function doBlockLevels( $text, $linestart ) {
2239 wfProfileIn( __METHOD__ );
2240
2241 # Parsing through the text line by line. The main thing
2242 # happening here is handling of block-level elements p, pre,
2243 # and making lists from lines starting with * # : etc.
2244 #
2245 $textLines = StringUtils::explode( "\n", $text );
2246
2247 $lastPrefix = $output = '';
2248 $this->mDTopen = $inBlockElem = false;
2249 $prefixLength = 0;
2250 $paragraphStack = false;
2251
2252 foreach ( $textLines as $oLine ) {
2253 # Fix up $linestart
2254 if ( !$linestart ) {
2255 $output .= $oLine;
2256 $linestart = true;
2257 continue;
2258 }
2259 # * = ul
2260 # # = ol
2261 # ; = dt
2262 # : = dd
2263
2264 $lastPrefixLength = strlen( $lastPrefix );
2265 $preCloseMatch = preg_match( '/<\\/pre/i', $oLine );
2266 $preOpenMatch = preg_match( '/<pre/i', $oLine );
2267 # If not in a <pre> element, scan for and figure out what prefixes are there.
2268 if ( !$this->mInPre ) {
2269 # Multiple prefixes may abut each other for nested lists.
2270 $prefixLength = strspn( $oLine, '*#:;' );
2271 $prefix = substr( $oLine, 0, $prefixLength );
2272
2273 # eh?
2274 # ; and : are both from definition-lists, so they're equivalent
2275 # for the purposes of determining whether or not we need to open/close
2276 # elements.
2277 $prefix2 = str_replace( ';', ':', $prefix );
2278 $t = substr( $oLine, $prefixLength );
2279 $this->mInPre = (bool)$preOpenMatch;
2280 } else {
2281 # Don't interpret any other prefixes in preformatted text
2282 $prefixLength = 0;
2283 $prefix = $prefix2 = '';
2284 $t = $oLine;
2285 }
2286
2287 # List generation
2288 if ( $prefixLength && $lastPrefix === $prefix2 ) {
2289 # Same as the last item, so no need to deal with nesting or opening stuff
2290 $output .= $this->nextItem( substr( $prefix, -1 ) );
2291 $paragraphStack = false;
2292
2293 if ( substr( $prefix, -1 ) === ';') {
2294 # The one nasty exception: definition lists work like this:
2295 # ; title : definition text
2296 # So we check for : in the remainder text to split up the
2297 # title and definition, without b0rking links.
2298 $term = $t2 = '';
2299 if ( $this->findColonNoLinks( $t, $term, $t2 ) !== false ) {
2300 $t = $t2;
2301 $output .= $term . $this->nextItem( ':' );
2302 }
2303 }
2304 } elseif ( $prefixLength || $lastPrefixLength ) {
2305 # We need to open or close prefixes, or both.
2306
2307 # Either open or close a level...
2308 $commonPrefixLength = $this->getCommon( $prefix, $lastPrefix );
2309 $paragraphStack = false;
2310
2311 # Close all the prefixes which aren't shared.
2312 while ( $commonPrefixLength < $lastPrefixLength ) {
2313 $output .= $this->closeList( $lastPrefix[$lastPrefixLength-1] );
2314 --$lastPrefixLength;
2315 }
2316
2317 # Continue the current prefix if appropriate.
2318 if ( $prefixLength <= $commonPrefixLength && $commonPrefixLength > 0 ) {
2319 $output .= $this->nextItem( $prefix[$commonPrefixLength-1] );
2320 }
2321
2322 # Open prefixes where appropriate.
2323 while ( $prefixLength > $commonPrefixLength ) {
2324 $char = substr( $prefix, $commonPrefixLength, 1 );
2325 $output .= $this->openList( $char );
2326
2327 if ( ';' === $char ) {
2328 # @todo FIXME: This is dupe of code above
2329 if ( $this->findColonNoLinks( $t, $term, $t2 ) !== false ) {
2330 $t = $t2;
2331 $output .= $term . $this->nextItem( ':' );
2332 }
2333 }
2334 ++$commonPrefixLength;
2335 }
2336 $lastPrefix = $prefix2;
2337 }
2338
2339 # If we have no prefixes, go to paragraph mode.
2340 if ( 0 == $prefixLength ) {
2341 wfProfileIn( __METHOD__."-paragraph" );
2342 # No prefix (not in list)--go to paragraph mode
2343 # XXX: use a stack for nestable elements like span, table and div
2344 $openmatch = preg_match('/(?:<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6|<pre|<tr|<p|<ul|<ol|<li|<\\/tr|<\\/td|<\\/th)/iS', $t );
2345 $closematch = preg_match(
2346 '/(?:<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6|'.
2347 '<td|<th|<\\/?div|<hr|<\\/pre|<\\/p|'.$this->mUniqPrefix.'-pre|<\\/li|<\\/ul|<\\/ol|<\\/?center)/iS', $t );
2348 if ( $openmatch or $closematch ) {
2349 $paragraphStack = false;
2350 # TODO bug 5718: paragraph closed
2351 $output .= $this->closeParagraph();
2352 if ( $preOpenMatch and !$preCloseMatch ) {
2353 $this->mInPre = true;
2354 }
2355 $inBlockElem = !$closematch;
2356 } elseif ( !$inBlockElem && !$this->mInPre ) {
2357 if ( ' ' == substr( $t, 0, 1 ) and ( $this->mLastSection === 'pre' || trim( $t ) != '' ) ) {
2358 # pre
2359 if ( $this->mLastSection !== 'pre' ) {
2360 $paragraphStack = false;
2361 $output .= $this->closeParagraph().'<pre>';
2362 $this->mLastSection = 'pre';
2363 }
2364 $t = substr( $t, 1 );
2365 } else {
2366 # paragraph
2367 if ( trim( $t ) === '' ) {
2368 if ( $paragraphStack ) {
2369 $output .= $paragraphStack.'<br />';
2370 $paragraphStack = false;
2371 $this->mLastSection = 'p';
2372 } else {
2373 if ( $this->mLastSection !== 'p' ) {
2374 $output .= $this->closeParagraph();
2375 $this->mLastSection = '';
2376 $paragraphStack = '<p>';
2377 } else {
2378 $paragraphStack = '</p><p>';
2379 }
2380 }
2381 } else {
2382 if ( $paragraphStack ) {
2383 $output .= $paragraphStack;
2384 $paragraphStack = false;
2385 $this->mLastSection = 'p';
2386 } elseif ( $this->mLastSection !== 'p' ) {
2387 $output .= $this->closeParagraph().'<p>';
2388 $this->mLastSection = 'p';
2389 }
2390 }
2391 }
2392 }
2393 wfProfileOut( __METHOD__."-paragraph" );
2394 }
2395 # somewhere above we forget to get out of pre block (bug 785)
2396 if ( $preCloseMatch && $this->mInPre ) {
2397 $this->mInPre = false;
2398 }
2399 if ( $paragraphStack === false ) {
2400 $output .= $t."\n";
2401 }
2402 }
2403 while ( $prefixLength ) {
2404 $output .= $this->closeList( $prefix2[$prefixLength-1] );
2405 --$prefixLength;
2406 }
2407 if ( $this->mLastSection != '' ) {
2408 $output .= '</' . $this->mLastSection . '>';
2409 $this->mLastSection = '';
2410 }
2411
2412 wfProfileOut( __METHOD__ );
2413 return $output;
2414 }
2415
2416 /**
2417 * Split up a string on ':', ignoring any occurrences inside tags
2418 * to prevent illegal overlapping.
2419 *
2420 * @param $str String the string to split
2421 * @param &$before String set to everything before the ':'
2422 * @param &$after String set to everything after the ':'
2423 * @return String the position of the ':', or false if none found
2424 */
2425 function findColonNoLinks( $str, &$before, &$after ) {
2426 wfProfileIn( __METHOD__ );
2427
2428 $pos = strpos( $str, ':' );
2429 if ( $pos === false ) {
2430 # Nothing to find!
2431 wfProfileOut( __METHOD__ );
2432 return false;
2433 }
2434
2435 $lt = strpos( $str, '<' );
2436 if ( $lt === false || $lt > $pos ) {
2437 # Easy; no tag nesting to worry about
2438 $before = substr( $str, 0, $pos );
2439 $after = substr( $str, $pos+1 );
2440 wfProfileOut( __METHOD__ );
2441 return $pos;
2442 }
2443
2444 # Ugly state machine to walk through avoiding tags.
2445 $state = self::COLON_STATE_TEXT;
2446 $stack = 0;
2447 $len = strlen( $str );
2448 for( $i = 0; $i < $len; $i++ ) {
2449 $c = $str[$i];
2450
2451 switch( $state ) {
2452 # (Using the number is a performance hack for common cases)
2453 case 0: # self::COLON_STATE_TEXT:
2454 switch( $c ) {
2455 case "<":
2456 # Could be either a <start> tag or an </end> tag
2457 $state = self::COLON_STATE_TAGSTART;
2458 break;
2459 case ":":
2460 if ( $stack == 0 ) {
2461 # We found it!
2462 $before = substr( $str, 0, $i );
2463 $after = substr( $str, $i + 1 );
2464 wfProfileOut( __METHOD__ );
2465 return $i;
2466 }
2467 # Embedded in a tag; don't break it.
2468 break;
2469 default:
2470 # Skip ahead looking for something interesting
2471 $colon = strpos( $str, ':', $i );
2472 if ( $colon === false ) {
2473 # Nothing else interesting
2474 wfProfileOut( __METHOD__ );
2475 return false;
2476 }
2477 $lt = strpos( $str, '<', $i );
2478 if ( $stack === 0 ) {
2479 if ( $lt === false || $colon < $lt ) {
2480 # We found it!
2481 $before = substr( $str, 0, $colon );
2482 $after = substr( $str, $colon + 1 );
2483 wfProfileOut( __METHOD__ );
2484 return $i;
2485 }
2486 }
2487 if ( $lt === false ) {
2488 # Nothing else interesting to find; abort!
2489 # We're nested, but there's no close tags left. Abort!
2490 break 2;
2491 }
2492 # Skip ahead to next tag start
2493 $i = $lt;
2494 $state = self::COLON_STATE_TAGSTART;
2495 }
2496 break;
2497 case 1: # self::COLON_STATE_TAG:
2498 # In a <tag>
2499 switch( $c ) {
2500 case ">":
2501 $stack++;
2502 $state = self::COLON_STATE_TEXT;
2503 break;
2504 case "/":
2505 # Slash may be followed by >?
2506 $state = self::COLON_STATE_TAGSLASH;
2507 break;
2508 default:
2509 # ignore
2510 }
2511 break;
2512 case 2: # self::COLON_STATE_TAGSTART:
2513 switch( $c ) {
2514 case "/":
2515 $state = self::COLON_STATE_CLOSETAG;
2516 break;
2517 case "!":
2518 $state = self::COLON_STATE_COMMENT;
2519 break;
2520 case ">":
2521 # Illegal early close? This shouldn't happen D:
2522 $state = self::COLON_STATE_TEXT;
2523 break;
2524 default:
2525 $state = self::COLON_STATE_TAG;
2526 }
2527 break;
2528 case 3: # self::COLON_STATE_CLOSETAG:
2529 # In a </tag>
2530 if ( $c === ">" ) {
2531 $stack--;
2532 if ( $stack < 0 ) {
2533 wfDebug( __METHOD__.": Invalid input; too many close tags\n" );
2534 wfProfileOut( __METHOD__ );
2535 return false;
2536 }
2537 $state = self::COLON_STATE_TEXT;
2538 }
2539 break;
2540 case self::COLON_STATE_TAGSLASH:
2541 if ( $c === ">" ) {
2542 # Yes, a self-closed tag <blah/>
2543 $state = self::COLON_STATE_TEXT;
2544 } else {
2545 # Probably we're jumping the gun, and this is an attribute
2546 $state = self::COLON_STATE_TAG;
2547 }
2548 break;
2549 case 5: # self::COLON_STATE_COMMENT:
2550 if ( $c === "-" ) {
2551 $state = self::COLON_STATE_COMMENTDASH;
2552 }
2553 break;
2554 case self::COLON_STATE_COMMENTDASH:
2555 if ( $c === "-" ) {
2556 $state = self::COLON_STATE_COMMENTDASHDASH;
2557 } else {
2558 $state = self::COLON_STATE_COMMENT;
2559 }
2560 break;
2561 case self::COLON_STATE_COMMENTDASHDASH:
2562 if ( $c === ">" ) {
2563 $state = self::COLON_STATE_TEXT;
2564 } else {
2565 $state = self::COLON_STATE_COMMENT;
2566 }
2567 break;
2568 default:
2569 throw new MWException( "State machine error in " . __METHOD__ );
2570 }
2571 }
2572 if ( $stack > 0 ) {
2573 wfDebug( __METHOD__.": Invalid input; not enough close tags (stack $stack, state $state)\n" );
2574 wfProfileOut( __METHOD__ );
2575 return false;
2576 }
2577 wfProfileOut( __METHOD__ );
2578 return false;
2579 }
2580
2581 /**
2582 * Return value of a magic variable (like PAGENAME)
2583 *
2584 * @private
2585 *
2586 * @param $index integer
2587 * @param $frame PPFrame
2588 *
2589 * @return string
2590 */
2591 function getVariableValue( $index, $frame = false ) {
2592 global $wgContLang, $wgSitename, $wgServer;
2593 global $wgArticlePath, $wgScriptPath, $wgStylePath;
2594
2595 if ( is_null( $this->mTitle ) ) {
2596 // If no title set, bad things are going to happen
2597 // later. Title should always be set since this
2598 // should only be called in the middle of a parse
2599 // operation (but the unit-tests do funky stuff)
2600 throw new MWException( __METHOD__ . ' Should only be '
2601 . ' called while parsing (no title set)' );
2602 }
2603
2604 /**
2605 * Some of these require message or data lookups and can be
2606 * expensive to check many times.
2607 */
2608 if ( wfRunHooks( 'ParserGetVariableValueVarCache', array( &$this, &$this->mVarCache ) ) ) {
2609 if ( isset( $this->mVarCache[$index] ) ) {
2610 return $this->mVarCache[$index];
2611 }
2612 }
2613
2614 $ts = wfTimestamp( TS_UNIX, $this->mOptions->getTimestamp() );
2615 wfRunHooks( 'ParserGetVariableValueTs', array( &$this, &$ts ) );
2616
2617 # Use the time zone
2618 global $wgLocaltimezone;
2619 if ( isset( $wgLocaltimezone ) ) {
2620 $oldtz = date_default_timezone_get();
2621 date_default_timezone_set( $wgLocaltimezone );
2622 }
2623
2624 $localTimestamp = date( 'YmdHis', $ts );
2625 $localMonth = date( 'm', $ts );
2626 $localMonth1 = date( 'n', $ts );
2627 $localMonthName = date( 'n', $ts );
2628 $localDay = date( 'j', $ts );
2629 $localDay2 = date( 'd', $ts );
2630 $localDayOfWeek = date( 'w', $ts );
2631 $localWeek = date( 'W', $ts );
2632 $localYear = date( 'Y', $ts );
2633 $localHour = date( 'H', $ts );
2634 if ( isset( $wgLocaltimezone ) ) {
2635 date_default_timezone_set( $oldtz );
2636 }
2637
2638 $pageLang = $this->getFunctionLang();
2639
2640 switch ( $index ) {
2641 case 'currentmonth':
2642 $value = $pageLang->formatNum( gmdate( 'm', $ts ) );
2643 break;
2644 case 'currentmonth1':
2645 $value = $pageLang->formatNum( gmdate( 'n', $ts ) );
2646 break;
2647 case 'currentmonthname':
2648 $value = $pageLang->getMonthName( gmdate( 'n', $ts ) );
2649 break;
2650 case 'currentmonthnamegen':
2651 $value = $pageLang->getMonthNameGen( gmdate( 'n', $ts ) );
2652 break;
2653 case 'currentmonthabbrev':
2654 $value = $pageLang->getMonthAbbreviation( gmdate( 'n', $ts ) );
2655 break;
2656 case 'currentday':
2657 $value = $pageLang->formatNum( gmdate( 'j', $ts ) );
2658 break;
2659 case 'currentday2':
2660 $value = $pageLang->formatNum( gmdate( 'd', $ts ) );
2661 break;
2662 case 'localmonth':
2663 $value = $pageLang->formatNum( $localMonth );
2664 break;
2665 case 'localmonth1':
2666 $value = $pageLang->formatNum( $localMonth1 );
2667 break;
2668 case 'localmonthname':
2669 $value = $pageLang->getMonthName( $localMonthName );
2670 break;
2671 case 'localmonthnamegen':
2672 $value = $pageLang->getMonthNameGen( $localMonthName );
2673 break;
2674 case 'localmonthabbrev':
2675 $value = $pageLang->getMonthAbbreviation( $localMonthName );
2676 break;
2677 case 'localday':
2678 $value = $pageLang->formatNum( $localDay );
2679 break;
2680 case 'localday2':
2681 $value = $pageLang->formatNum( $localDay2 );
2682 break;
2683 case 'pagename':
2684 $value = wfEscapeWikiText( $this->mTitle->getText() );
2685 break;
2686 case 'pagenamee':
2687 $value = wfEscapeWikiText( $this->mTitle->getPartialURL() );
2688 break;
2689 case 'fullpagename':
2690 $value = wfEscapeWikiText( $this->mTitle->getPrefixedText() );
2691 break;
2692 case 'fullpagenamee':
2693 $value = wfEscapeWikiText( $this->mTitle->getPrefixedURL() );
2694 break;
2695 case 'subpagename':
2696 $value = wfEscapeWikiText( $this->mTitle->getSubpageText() );
2697 break;
2698 case 'subpagenamee':
2699 $value = wfEscapeWikiText( $this->mTitle->getSubpageUrlForm() );
2700 break;
2701 case 'basepagename':
2702 $value = wfEscapeWikiText( $this->mTitle->getBaseText() );
2703 break;
2704 case 'basepagenamee':
2705 $value = wfEscapeWikiText( wfUrlEncode( str_replace( ' ', '_', $this->mTitle->getBaseText() ) ) );
2706 break;
2707 case 'talkpagename':
2708 if ( $this->mTitle->canTalk() ) {
2709 $talkPage = $this->mTitle->getTalkPage();
2710 $value = wfEscapeWikiText( $talkPage->getPrefixedText() );
2711 } else {
2712 $value = '';
2713 }
2714 break;
2715 case 'talkpagenamee':
2716 if ( $this->mTitle->canTalk() ) {
2717 $talkPage = $this->mTitle->getTalkPage();
2718 $value = wfEscapeWikiText( $talkPage->getPrefixedUrl() );
2719 } else {
2720 $value = '';
2721 }
2722 break;
2723 case 'subjectpagename':
2724 $subjPage = $this->mTitle->getSubjectPage();
2725 $value = wfEscapeWikiText( $subjPage->getPrefixedText() );
2726 break;
2727 case 'subjectpagenamee':
2728 $subjPage = $this->mTitle->getSubjectPage();
2729 $value = wfEscapeWikiText( $subjPage->getPrefixedUrl() );
2730 break;
2731 case 'pageid': // requested in bug 23427
2732 $pageid = $this->getTitle()->getArticleId();
2733 if( $pageid == 0 ) {
2734 # 0 means the page doesn't exist in the database,
2735 # which means the user is previewing a new page.
2736 # The vary-revision flag must be set, because the magic word
2737 # will have a different value once the page is saved.
2738 $this->mOutput->setFlag( 'vary-revision' );
2739 wfDebug( __METHOD__ . ": {{PAGEID}} used in a new page, setting vary-revision...\n" );
2740 }
2741 $value = $pageid ? $pageid : null;
2742 break;
2743 case 'revisionid':
2744 # Let the edit saving system know we should parse the page
2745 # *after* a revision ID has been assigned.
2746 $this->mOutput->setFlag( 'vary-revision' );
2747 wfDebug( __METHOD__ . ": {{REVISIONID}} used, setting vary-revision...\n" );
2748 $value = $this->mRevisionId;
2749 break;
2750 case 'revisionday':
2751 # Let the edit saving system know we should parse the page
2752 # *after* a revision ID has been assigned. This is for null edits.
2753 $this->mOutput->setFlag( 'vary-revision' );
2754 wfDebug( __METHOD__ . ": {{REVISIONDAY}} used, setting vary-revision...\n" );
2755 $value = intval( substr( $this->getRevisionTimestamp(), 6, 2 ) );
2756 break;
2757 case 'revisionday2':
2758 # Let the edit saving system know we should parse the page
2759 # *after* a revision ID has been assigned. This is for null edits.
2760 $this->mOutput->setFlag( 'vary-revision' );
2761 wfDebug( __METHOD__ . ": {{REVISIONDAY2}} used, setting vary-revision...\n" );
2762 $value = substr( $this->getRevisionTimestamp(), 6, 2 );
2763 break;
2764 case 'revisionmonth':
2765 # Let the edit saving system know we should parse the page
2766 # *after* a revision ID has been assigned. This is for null edits.
2767 $this->mOutput->setFlag( 'vary-revision' );
2768 wfDebug( __METHOD__ . ": {{REVISIONMONTH}} used, setting vary-revision...\n" );
2769 $value = substr( $this->getRevisionTimestamp(), 4, 2 );
2770 break;
2771 case 'revisionmonth1':
2772 # Let the edit saving system know we should parse the page
2773 # *after* a revision ID has been assigned. This is for null edits.
2774 $this->mOutput->setFlag( 'vary-revision' );
2775 wfDebug( __METHOD__ . ": {{REVISIONMONTH1}} used, setting vary-revision...\n" );
2776 $value = intval( substr( $this->getRevisionTimestamp(), 4, 2 ) );
2777 break;
2778 case 'revisionyear':
2779 # Let the edit saving system know we should parse the page
2780 # *after* a revision ID has been assigned. This is for null edits.
2781 $this->mOutput->setFlag( 'vary-revision' );
2782 wfDebug( __METHOD__ . ": {{REVISIONYEAR}} used, setting vary-revision...\n" );
2783 $value = substr( $this->getRevisionTimestamp(), 0, 4 );
2784 break;
2785 case 'revisiontimestamp':
2786 # Let the edit saving system know we should parse the page
2787 # *after* a revision ID has been assigned. This is for null edits.
2788 $this->mOutput->setFlag( 'vary-revision' );
2789 wfDebug( __METHOD__ . ": {{REVISIONTIMESTAMP}} used, setting vary-revision...\n" );
2790 $value = $this->getRevisionTimestamp();
2791 break;
2792 case 'revisionuser':
2793 # Let the edit saving system know we should parse the page
2794 # *after* a revision ID has been assigned. This is for null edits.
2795 $this->mOutput->setFlag( 'vary-revision' );
2796 wfDebug( __METHOD__ . ": {{REVISIONUSER}} used, setting vary-revision...\n" );
2797 $value = $this->getRevisionUser();
2798 break;
2799 case 'namespace':
2800 $value = str_replace( '_',' ',$wgContLang->getNsText( $this->mTitle->getNamespace() ) );
2801 break;
2802 case 'namespacee':
2803 $value = wfUrlencode( $wgContLang->getNsText( $this->mTitle->getNamespace() ) );
2804 break;
2805 case 'namespacenumber':
2806 $value = $this->mTitle->getNamespace();
2807 break;
2808 case 'talkspace':
2809 $value = $this->mTitle->canTalk() ? str_replace( '_',' ',$this->mTitle->getTalkNsText() ) : '';
2810 break;
2811 case 'talkspacee':
2812 $value = $this->mTitle->canTalk() ? wfUrlencode( $this->mTitle->getTalkNsText() ) : '';
2813 break;
2814 case 'subjectspace':
2815 $value = $this->mTitle->getSubjectNsText();
2816 break;
2817 case 'subjectspacee':
2818 $value = ( wfUrlencode( $this->mTitle->getSubjectNsText() ) );
2819 break;
2820 case 'currentdayname':
2821 $value = $pageLang->getWeekdayName( gmdate( 'w', $ts ) + 1 );
2822 break;
2823 case 'currentyear':
2824 $value = $pageLang->formatNum( gmdate( 'Y', $ts ), true );
2825 break;
2826 case 'currenttime':
2827 $value = $pageLang->time( wfTimestamp( TS_MW, $ts ), false, false );
2828 break;
2829 case 'currenthour':
2830 $value = $pageLang->formatNum( gmdate( 'H', $ts ), true );
2831 break;
2832 case 'currentweek':
2833 # @bug 4594 PHP5 has it zero padded, PHP4 does not, cast to
2834 # int to remove the padding
2835 $value = $pageLang->formatNum( (int)gmdate( 'W', $ts ) );
2836 break;
2837 case 'currentdow':
2838 $value = $pageLang->formatNum( gmdate( 'w', $ts ) );
2839 break;
2840 case 'localdayname':
2841 $value = $pageLang->getWeekdayName( $localDayOfWeek + 1 );
2842 break;
2843 case 'localyear':
2844 $value = $pageLang->formatNum( $localYear, true );
2845 break;
2846 case 'localtime':
2847 $value = $pageLang->time( $localTimestamp, false, false );
2848 break;
2849 case 'localhour':
2850 $value = $pageLang->formatNum( $localHour, true );
2851 break;
2852 case 'localweek':
2853 # @bug 4594 PHP5 has it zero padded, PHP4 does not, cast to
2854 # int to remove the padding
2855 $value = $pageLang->formatNum( (int)$localWeek );
2856 break;
2857 case 'localdow':
2858 $value = $pageLang->formatNum( $localDayOfWeek );
2859 break;
2860 case 'numberofarticles':
2861 $value = $pageLang->formatNum( SiteStats::articles() );
2862 break;
2863 case 'numberoffiles':
2864 $value = $pageLang->formatNum( SiteStats::images() );
2865 break;
2866 case 'numberofusers':
2867 $value = $pageLang->formatNum( SiteStats::users() );
2868 break;
2869 case 'numberofactiveusers':
2870 $value = $pageLang->formatNum( SiteStats::activeUsers() );
2871 break;
2872 case 'numberofpages':
2873 $value = $pageLang->formatNum( SiteStats::pages() );
2874 break;
2875 case 'numberofadmins':
2876 $value = $pageLang->formatNum( SiteStats::numberingroup( 'sysop' ) );
2877 break;
2878 case 'numberofedits':
2879 $value = $pageLang->formatNum( SiteStats::edits() );
2880 break;
2881 case 'numberofviews':
2882 global $wgDisableCounters;
2883 $value = !$wgDisableCounters ? $pageLang->formatNum( SiteStats::views() ) : '';
2884 break;
2885 case 'currenttimestamp':
2886 $value = wfTimestamp( TS_MW, $ts );
2887 break;
2888 case 'localtimestamp':
2889 $value = $localTimestamp;
2890 break;
2891 case 'currentversion':
2892 $value = SpecialVersion::getVersion();
2893 break;
2894 case 'articlepath':
2895 return $wgArticlePath;
2896 case 'sitename':
2897 return $wgSitename;
2898 case 'server':
2899 return $wgServer;
2900 case 'servername':
2901 $serverParts = wfParseUrl( $wgServer );
2902 return $serverParts && isset( $serverParts['host'] ) ? $serverParts['host'] : $wgServer;
2903 case 'scriptpath':
2904 return $wgScriptPath;
2905 case 'stylepath':
2906 return $wgStylePath;
2907 case 'directionmark':
2908 return $pageLang->getDirMark();
2909 case 'contentlanguage':
2910 global $wgLanguageCode;
2911 return $wgLanguageCode;
2912 default:
2913 $ret = null;
2914 if ( wfRunHooks( 'ParserGetVariableValueSwitch', array( &$this, &$this->mVarCache, &$index, &$ret, &$frame ) ) ) {
2915 return $ret;
2916 } else {
2917 return null;
2918 }
2919 }
2920
2921 if ( $index ) {
2922 $this->mVarCache[$index] = $value;
2923 }
2924
2925 return $value;
2926 }
2927
2928 /**
2929 * initialise the magic variables (like CURRENTMONTHNAME) and substitution modifiers
2930 *
2931 * @private
2932 */
2933 function initialiseVariables() {
2934 wfProfileIn( __METHOD__ );
2935 $variableIDs = MagicWord::getVariableIDs();
2936 $substIDs = MagicWord::getSubstIDs();
2937
2938 $this->mVariables = new MagicWordArray( $variableIDs );
2939 $this->mSubstWords = new MagicWordArray( $substIDs );
2940 wfProfileOut( __METHOD__ );
2941 }
2942
2943 /**
2944 * Preprocess some wikitext and return the document tree.
2945 * This is the ghost of replace_variables().
2946 *
2947 * @param $text String: The text to parse
2948 * @param $flags Integer: bitwise combination of:
2949 * self::PTD_FOR_INCLUSION Handle "<noinclude>" and "<includeonly>" as if the text is being
2950 * included. Default is to assume a direct page view.
2951 *
2952 * The generated DOM tree must depend only on the input text and the flags.
2953 * The DOM tree must be the same in OT_HTML and OT_WIKI mode, to avoid a regression of bug 4899.
2954 *
2955 * Any flag added to the $flags parameter here, or any other parameter liable to cause a
2956 * change in the DOM tree for a given text, must be passed through the section identifier
2957 * in the section edit link and thus back to extractSections().
2958 *
2959 * The output of this function is currently only cached in process memory, but a persistent
2960 * cache may be implemented at a later date which takes further advantage of these strict
2961 * dependency requirements.
2962 *
2963 * @private
2964 *
2965 * @return PPNode
2966 */
2967 function preprocessToDom( $text, $flags = 0 ) {
2968 $dom = $this->getPreprocessor()->preprocessToObj( $text, $flags );
2969 return $dom;
2970 }
2971
2972 /**
2973 * Return a three-element array: leading whitespace, string contents, trailing whitespace
2974 *
2975 * @param $s string
2976 *
2977 * @return array
2978 */
2979 public static function splitWhitespace( $s ) {
2980 $ltrimmed = ltrim( $s );
2981 $w1 = substr( $s, 0, strlen( $s ) - strlen( $ltrimmed ) );
2982 $trimmed = rtrim( $ltrimmed );
2983 $diff = strlen( $ltrimmed ) - strlen( $trimmed );
2984 if ( $diff > 0 ) {
2985 $w2 = substr( $ltrimmed, -$diff );
2986 } else {
2987 $w2 = '';
2988 }
2989 return array( $w1, $trimmed, $w2 );
2990 }
2991
2992 /**
2993 * Replace magic variables, templates, and template arguments
2994 * with the appropriate text. Templates are substituted recursively,
2995 * taking care to avoid infinite loops.
2996 *
2997 * Note that the substitution depends on value of $mOutputType:
2998 * self::OT_WIKI: only {{subst:}} templates
2999 * self::OT_PREPROCESS: templates but not extension tags
3000 * self::OT_HTML: all templates and extension tags
3001 *
3002 * @param $text String the text to transform
3003 * @param $frame PPFrame Object describing the arguments passed to the template.
3004 * Arguments may also be provided as an associative array, as was the usual case before MW1.12.
3005 * Providing arguments this way may be useful for extensions wishing to perform variable replacement explicitly.
3006 * @param $argsOnly Boolean only do argument (triple-brace) expansion, not double-brace expansion
3007 * @private
3008 *
3009 * @return string
3010 */
3011 function replaceVariables( $text, $frame = false, $argsOnly = false ) {
3012 # Is there any text? Also, Prevent too big inclusions!
3013 if ( strlen( $text ) < 1 || strlen( $text ) > $this->mOptions->getMaxIncludeSize() ) {
3014 return $text;
3015 }
3016 wfProfileIn( __METHOD__ );
3017
3018 if ( $frame === false ) {
3019 $frame = $this->getPreprocessor()->newFrame();
3020 } elseif ( !( $frame instanceof PPFrame ) ) {
3021 wfDebug( __METHOD__." called using plain parameters instead of a PPFrame instance. Creating custom frame.\n" );
3022 $frame = $this->getPreprocessor()->newCustomFrame( $frame );
3023 }
3024
3025 $dom = $this->preprocessToDom( $text );
3026 $flags = $argsOnly ? PPFrame::NO_TEMPLATES : 0;
3027 $text = $frame->expand( $dom, $flags );
3028
3029 wfProfileOut( __METHOD__ );
3030 return $text;
3031 }
3032
3033 /**
3034 * Clean up argument array - refactored in 1.9 so parserfunctions can use it, too.
3035 *
3036 * @param $args array
3037 *
3038 * @return array
3039 */
3040 static function createAssocArgs( $args ) {
3041 $assocArgs = array();
3042 $index = 1;
3043 foreach ( $args as $arg ) {
3044 $eqpos = strpos( $arg, '=' );
3045 if ( $eqpos === false ) {
3046 $assocArgs[$index++] = $arg;
3047 } else {
3048 $name = trim( substr( $arg, 0, $eqpos ) );
3049 $value = trim( substr( $arg, $eqpos+1 ) );
3050 if ( $value === false ) {
3051 $value = '';
3052 }
3053 if ( $name !== false ) {
3054 $assocArgs[$name] = $value;
3055 }
3056 }
3057 }
3058
3059 return $assocArgs;
3060 }
3061
3062 /**
3063 * Warn the user when a parser limitation is reached
3064 * Will warn at most once the user per limitation type
3065 *
3066 * @param $limitationType String: should be one of:
3067 * 'expensive-parserfunction' (corresponding messages:
3068 * 'expensive-parserfunction-warning',
3069 * 'expensive-parserfunction-category')
3070 * 'post-expand-template-argument' (corresponding messages:
3071 * 'post-expand-template-argument-warning',
3072 * 'post-expand-template-argument-category')
3073 * 'post-expand-template-inclusion' (corresponding messages:
3074 * 'post-expand-template-inclusion-warning',
3075 * 'post-expand-template-inclusion-category')
3076 * @param $current int|null Current value
3077 * @param $max int|null Maximum allowed, when an explicit limit has been
3078 * exceeded, provide the values (optional)
3079 */
3080 function limitationWarn( $limitationType, $current = null, $max = null) {
3081 # does no harm if $current and $max are present but are unnecessary for the message
3082 $warning = wfMsgExt( "$limitationType-warning", array( 'parsemag', 'escape' ), $current, $max );
3083 $this->mOutput->addWarning( $warning );
3084 $this->addTrackingCategory( "$limitationType-category" );
3085 }
3086
3087 /**
3088 * Return the text of a template, after recursively
3089 * replacing any variables or templates within the template.
3090 *
3091 * @param $piece Array: the parts of the template
3092 * $piece['title']: the title, i.e. the part before the |
3093 * $piece['parts']: the parameter array
3094 * $piece['lineStart']: whether the brace was at the start of a line
3095 * @param $frame PPFrame The current frame, contains template arguments
3096 * @return String: the text of the template
3097 * @private
3098 */
3099 function braceSubstitution( $piece, $frame ) {
3100 global $wgContLang;
3101 wfProfileIn( __METHOD__ );
3102 wfProfileIn( __METHOD__.'-setup' );
3103
3104 # Flags
3105 $found = false; # $text has been filled
3106 $nowiki = false; # wiki markup in $text should be escaped
3107 $isHTML = false; # $text is HTML, armour it against wikitext transformation
3108 $forceRawInterwiki = false; # Force interwiki transclusion to be done in raw mode not rendered
3109 $isChildObj = false; # $text is a DOM node needing expansion in a child frame
3110 $isLocalObj = false; # $text is a DOM node needing expansion in the current frame
3111
3112 # Title object, where $text came from
3113 $title = false;
3114
3115 # $part1 is the bit before the first |, and must contain only title characters.
3116 # Various prefixes will be stripped from it later.
3117 $titleWithSpaces = $frame->expand( $piece['title'] );
3118 $part1 = trim( $titleWithSpaces );
3119 $titleText = false;
3120
3121 # Original title text preserved for various purposes
3122 $originalTitle = $part1;
3123
3124 # $args is a list of argument nodes, starting from index 0, not including $part1
3125 # @todo FIXME: If piece['parts'] is null then the call to getLength() below won't work b/c this $args isn't an object
3126 $args = ( null == $piece['parts'] ) ? array() : $piece['parts'];
3127 wfProfileOut( __METHOD__.'-setup' );
3128
3129 $titleProfileIn = null; // profile templates
3130
3131 # SUBST
3132 wfProfileIn( __METHOD__.'-modifiers' );
3133 if ( !$found ) {
3134
3135 $substMatch = $this->mSubstWords->matchStartAndRemove( $part1 );
3136
3137 # Possibilities for substMatch: "subst", "safesubst" or FALSE
3138 # Decide whether to expand template or keep wikitext as-is.
3139 if ( $this->ot['wiki'] ) {
3140 if ( $substMatch === false ) {
3141 $literal = true; # literal when in PST with no prefix
3142 } else {
3143 $literal = false; # expand when in PST with subst: or safesubst:
3144 }
3145 } else {
3146 if ( $substMatch == 'subst' ) {
3147 $literal = true; # literal when not in PST with plain subst:
3148 } else {
3149 $literal = false; # expand when not in PST with safesubst: or no prefix
3150 }
3151 }
3152 if ( $literal ) {
3153 $text = $frame->virtualBracketedImplode( '{{', '|', '}}', $titleWithSpaces, $args );
3154 $isLocalObj = true;
3155 $found = true;
3156 }
3157 }
3158
3159 # Variables
3160 if ( !$found && $args->getLength() == 0 ) {
3161 $id = $this->mVariables->matchStartToEnd( $part1 );
3162 if ( $id !== false ) {
3163 $text = $this->getVariableValue( $id, $frame );
3164 if ( MagicWord::getCacheTTL( $id ) > -1 ) {
3165 $this->mOutput->updateCacheExpiry( MagicWord::getCacheTTL( $id ) );
3166 }
3167 $found = true;
3168 }
3169 }
3170
3171 # MSG, MSGNW and RAW
3172 if ( !$found ) {
3173 # Check for MSGNW:
3174 $mwMsgnw = MagicWord::get( 'msgnw' );
3175 if ( $mwMsgnw->matchStartAndRemove( $part1 ) ) {
3176 $nowiki = true;
3177 } else {
3178 # Remove obsolete MSG:
3179 $mwMsg = MagicWord::get( 'msg' );
3180 $mwMsg->matchStartAndRemove( $part1 );
3181 }
3182
3183 # Check for RAW:
3184 $mwRaw = MagicWord::get( 'raw' );
3185 if ( $mwRaw->matchStartAndRemove( $part1 ) ) {
3186 $forceRawInterwiki = true;
3187 }
3188 }
3189 wfProfileOut( __METHOD__.'-modifiers' );
3190
3191 # Parser functions
3192 if ( !$found ) {
3193 wfProfileIn( __METHOD__ . '-pfunc' );
3194
3195 $colonPos = strpos( $part1, ':' );
3196 if ( $colonPos !== false ) {
3197 # Case sensitive functions
3198 $function = substr( $part1, 0, $colonPos );
3199 if ( isset( $this->mFunctionSynonyms[1][$function] ) ) {
3200 $function = $this->mFunctionSynonyms[1][$function];
3201 } else {
3202 # Case insensitive functions
3203 $function = $wgContLang->lc( $function );
3204 if ( isset( $this->mFunctionSynonyms[0][$function] ) ) {
3205 $function = $this->mFunctionSynonyms[0][$function];
3206 } else {
3207 $function = false;
3208 }
3209 }
3210 if ( $function ) {
3211 wfProfileIn( __METHOD__ . '-pfunc-' . $function );
3212 list( $callback, $flags ) = $this->mFunctionHooks[$function];
3213 $initialArgs = array( &$this );
3214 $funcArgs = array( trim( substr( $part1, $colonPos + 1 ) ) );
3215 if ( $flags & SFH_OBJECT_ARGS ) {
3216 # Add a frame parameter, and pass the arguments as an array
3217 $allArgs = $initialArgs;
3218 $allArgs[] = $frame;
3219 for ( $i = 0; $i < $args->getLength(); $i++ ) {
3220 $funcArgs[] = $args->item( $i );
3221 }
3222 $allArgs[] = $funcArgs;
3223 } else {
3224 # Convert arguments to plain text
3225 for ( $i = 0; $i < $args->getLength(); $i++ ) {
3226 $funcArgs[] = trim( $frame->expand( $args->item( $i ) ) );
3227 }
3228 $allArgs = array_merge( $initialArgs, $funcArgs );
3229 }
3230
3231 # Workaround for PHP bug 35229 and similar
3232 if ( !is_callable( $callback ) ) {
3233 wfProfileOut( __METHOD__ . '-pfunc-' . $function );
3234 wfProfileOut( __METHOD__ . '-pfunc' );
3235 wfProfileOut( __METHOD__ );
3236 throw new MWException( "Tag hook for $function is not callable\n" );
3237 }
3238 $result = call_user_func_array( $callback, $allArgs );
3239 $found = true;
3240 $noparse = true;
3241 $preprocessFlags = 0;
3242
3243 if ( is_array( $result ) ) {
3244 if ( isset( $result[0] ) ) {
3245 $text = $result[0];
3246 unset( $result[0] );
3247 }
3248
3249 # Extract flags into the local scope
3250 # This allows callers to set flags such as nowiki, found, etc.
3251 extract( $result );
3252 } else {
3253 $text = $result;
3254 }
3255 if ( !$noparse ) {
3256 $text = $this->preprocessToDom( $text, $preprocessFlags );
3257 $isChildObj = true;
3258 }
3259 wfProfileOut( __METHOD__ . '-pfunc-' . $function );
3260 }
3261 }
3262 wfProfileOut( __METHOD__ . '-pfunc' );
3263 }
3264
3265 # Finish mangling title and then check for loops.
3266 # Set $title to a Title object and $titleText to the PDBK
3267 if ( !$found ) {
3268 $ns = NS_TEMPLATE;
3269 # Split the title into page and subpage
3270 $subpage = '';
3271 $part1 = $this->maybeDoSubpageLink( $part1, $subpage );
3272 if ( $subpage !== '' ) {
3273 $ns = $this->mTitle->getNamespace();
3274 }
3275 $title = Title::newFromText( $part1, $ns );
3276 if ( $title ) {
3277 $titleText = $title->getPrefixedText();
3278 # Check for language variants if the template is not found
3279 if ( $this->getConverterLanguage()->hasVariants() && $title->getArticleID() == 0 ) {
3280 $this->getConverterLanguage()->findVariantLink( $part1, $title, true );
3281 }
3282 # Do recursion depth check
3283 $limit = $this->mOptions->getMaxTemplateDepth();
3284 if ( $frame->depth >= $limit ) {
3285 $found = true;
3286 $text = '<span class="error">'
3287 . wfMsgForContent( 'parser-template-recursion-depth-warning', $limit )
3288 . '</span>';
3289 }
3290 }
3291 }
3292
3293 # Load from database
3294 if ( !$found && $title ) {
3295 if ( !Profiler::instance()->isPersistent() ) {
3296 # Too many unique items can kill profiling DBs/collectors
3297 $titleProfileIn = __METHOD__ . "-title-" . $title->getDBKey();
3298 wfProfileIn( $titleProfileIn ); // template in
3299 }
3300 wfProfileIn( __METHOD__ . '-loadtpl' );
3301 if ( !$title->isExternal() ) {
3302 if ( $title->isSpecialPage()
3303 && $this->mOptions->getAllowSpecialInclusion()
3304 && $this->ot['html'] )
3305 {
3306 // Pass the template arguments as URL parameters.
3307 // "uselang" will have no effect since the Language object
3308 // is forced to the one defined in ParserOptions.
3309 $pageArgs = array();
3310 for ( $i = 0; $i < $args->getLength(); $i++ ) {
3311 $bits = $args->item( $i )->splitArg();
3312 if ( strval( $bits['index'] ) === '' ) {
3313 $name = trim( $frame->expand( $bits['name'], PPFrame::STRIP_COMMENTS ) );
3314 $value = trim( $frame->expand( $bits['value'] ) );
3315 $pageArgs[$name] = $value;
3316 }
3317 }
3318
3319 // Create a new context to execute the special page
3320 $context = new RequestContext;
3321 $context->setTitle( $title );
3322 $context->setRequest( new FauxRequest( $pageArgs ) );
3323 $context->setUser( $this->getUser() );
3324 $context->setLanguage( $this->mOptions->getUserLangObj() );
3325 $ret = SpecialPageFactory::capturePath( $title, $context );
3326 if ( $ret ) {
3327 $text = $context->getOutput()->getHTML();
3328 $this->mOutput->addOutputPageMetadata( $context->getOutput() );
3329 $found = true;
3330 $isHTML = true;
3331 $this->disableCache();
3332 }
3333 } elseif ( MWNamespace::isNonincludable( $title->getNamespace() ) ) {
3334 $found = false; # access denied
3335 wfDebug( __METHOD__.": template inclusion denied for " . $title->getPrefixedDBkey() );
3336 } else {
3337 list( $text, $title ) = $this->getTemplateDom( $title );
3338 if ( $text !== false ) {
3339 $found = true;
3340 $isChildObj = true;
3341 }
3342 }
3343
3344 # If the title is valid but undisplayable, make a link to it
3345 if ( !$found && ( $this->ot['html'] || $this->ot['pre'] ) ) {
3346 $text = "[[:$titleText]]";
3347 $found = true;
3348 }
3349 } elseif ( $title->isTrans() ) {
3350 # Interwiki transclusion
3351 if ( $this->ot['html'] && !$forceRawInterwiki ) {
3352 $text = $this->interwikiTransclude( $title, 'render' );
3353 $isHTML = true;
3354 } else {
3355 $text = $this->interwikiTransclude( $title, 'raw' );
3356 # Preprocess it like a template
3357 $text = $this->preprocessToDom( $text, self::PTD_FOR_INCLUSION );
3358 $isChildObj = true;
3359 }
3360 $found = true;
3361 }
3362
3363 # Do infinite loop check
3364 # This has to be done after redirect resolution to avoid infinite loops via redirects
3365 if ( !$frame->loopCheck( $title ) ) {
3366 $found = true;
3367 $text = '<span class="error">' . wfMsgForContent( 'parser-template-loop-warning', $titleText ) . '</span>';
3368 wfDebug( __METHOD__.": template loop broken at '$titleText'\n" );
3369 }
3370 wfProfileOut( __METHOD__ . '-loadtpl' );
3371 }
3372
3373 # If we haven't found text to substitute by now, we're done
3374 # Recover the source wikitext and return it
3375 if ( !$found ) {
3376 $text = $frame->virtualBracketedImplode( '{{', '|', '}}', $titleWithSpaces, $args );
3377 if ( $titleProfileIn ) {
3378 wfProfileOut( $titleProfileIn ); // template out
3379 }
3380 wfProfileOut( __METHOD__ );
3381 return array( 'object' => $text );
3382 }
3383
3384 # Expand DOM-style return values in a child frame
3385 if ( $isChildObj ) {
3386 # Clean up argument array
3387 $newFrame = $frame->newChild( $args, $title );
3388
3389 if ( $nowiki ) {
3390 $text = $newFrame->expand( $text, PPFrame::RECOVER_ORIG );
3391 } elseif ( $titleText !== false && $newFrame->isEmpty() ) {
3392 # Expansion is eligible for the empty-frame cache
3393 if ( isset( $this->mTplExpandCache[$titleText] ) ) {
3394 $text = $this->mTplExpandCache[$titleText];
3395 } else {
3396 $text = $newFrame->expand( $text );
3397 $this->mTplExpandCache[$titleText] = $text;
3398 }
3399 } else {
3400 # Uncached expansion
3401 $text = $newFrame->expand( $text );
3402 }
3403 }
3404 if ( $isLocalObj && $nowiki ) {
3405 $text = $frame->expand( $text, PPFrame::RECOVER_ORIG );
3406 $isLocalObj = false;
3407 }
3408
3409 if ( $titleProfileIn ) {
3410 wfProfileOut( $titleProfileIn ); // template out
3411 }
3412
3413 # Replace raw HTML by a placeholder
3414 if ( $isHTML ) {
3415 $text = $this->insertStripItem( $text );
3416 } elseif ( $nowiki && ( $this->ot['html'] || $this->ot['pre'] ) ) {
3417 # Escape nowiki-style return values
3418 $text = wfEscapeWikiText( $text );
3419 } elseif ( is_string( $text )
3420 && !$piece['lineStart']
3421 && preg_match( '/^(?:{\\||:|;|#|\*)/', $text ) )
3422 {
3423 # Bug 529: if the template begins with a table or block-level
3424 # element, it should be treated as beginning a new line.
3425 # This behaviour is somewhat controversial.
3426 $text = "\n" . $text;
3427 }
3428
3429 if ( is_string( $text ) && !$this->incrementIncludeSize( 'post-expand', strlen( $text ) ) ) {
3430 # Error, oversize inclusion
3431 if ( $titleText !== false ) {
3432 # Make a working, properly escaped link if possible (bug 23588)
3433 $text = "[[:$titleText]]";
3434 } else {
3435 # This will probably not be a working link, but at least it may
3436 # provide some hint of where the problem is
3437 preg_replace( '/^:/', '', $originalTitle );
3438 $text = "[[:$originalTitle]]";
3439 }
3440 $text .= $this->insertStripItem( '<!-- WARNING: template omitted, post-expand include size too large -->' );
3441 $this->limitationWarn( 'post-expand-template-inclusion' );
3442 }
3443
3444 if ( $isLocalObj ) {
3445 $ret = array( 'object' => $text );
3446 } else {
3447 $ret = array( 'text' => $text );
3448 }
3449
3450 wfProfileOut( __METHOD__ );
3451 return $ret;
3452 }
3453
3454 /**
3455 * Get the semi-parsed DOM representation of a template with a given title,
3456 * and its redirect destination title. Cached.
3457 *
3458 * @param $title Title
3459 *
3460 * @return array
3461 */
3462 function getTemplateDom( $title ) {
3463 $cacheTitle = $title;
3464 $titleText = $title->getPrefixedDBkey();
3465
3466 if ( isset( $this->mTplRedirCache[$titleText] ) ) {
3467 list( $ns, $dbk ) = $this->mTplRedirCache[$titleText];
3468 $title = Title::makeTitle( $ns, $dbk );
3469 $titleText = $title->getPrefixedDBkey();
3470 }
3471 if ( isset( $this->mTplDomCache[$titleText] ) ) {
3472 return array( $this->mTplDomCache[$titleText], $title );
3473 }
3474
3475 # Cache miss, go to the database
3476 list( $text, $title ) = $this->fetchTemplateAndTitle( $title );
3477
3478 if ( $text === false ) {
3479 $this->mTplDomCache[$titleText] = false;
3480 return array( false, $title );
3481 }
3482
3483 $dom = $this->preprocessToDom( $text, self::PTD_FOR_INCLUSION );
3484 $this->mTplDomCache[ $titleText ] = $dom;
3485
3486 if ( !$title->equals( $cacheTitle ) ) {
3487 $this->mTplRedirCache[$cacheTitle->getPrefixedDBkey()] =
3488 array( $title->getNamespace(), $cdb = $title->getDBkey() );
3489 }
3490
3491 return array( $dom, $title );
3492 }
3493
3494 /**
3495 * Fetch the unparsed text of a template and register a reference to it.
3496 * @param Title $title
3497 * @return Array ( string or false, Title )
3498 */
3499 function fetchTemplateAndTitle( $title ) {
3500 $templateCb = $this->mOptions->getTemplateCallback(); # Defaults to Parser::statelessFetchTemplate()
3501 $stuff = call_user_func( $templateCb, $title, $this );
3502 $text = $stuff['text'];
3503 $finalTitle = isset( $stuff['finalTitle'] ) ? $stuff['finalTitle'] : $title;
3504 if ( isset( $stuff['deps'] ) ) {
3505 foreach ( $stuff['deps'] as $dep ) {
3506 $this->mOutput->addTemplate( $dep['title'], $dep['page_id'], $dep['rev_id'] );
3507 }
3508 }
3509 return array( $text, $finalTitle );
3510 }
3511
3512 /**
3513 * Fetch the unparsed text of a template and register a reference to it.
3514 * @param Title $title
3515 * @return mixed string or false
3516 */
3517 function fetchTemplate( $title ) {
3518 $rv = $this->fetchTemplateAndTitle( $title );
3519 return $rv[0];
3520 }
3521
3522 /**
3523 * Static function to get a template
3524 * Can be overridden via ParserOptions::setTemplateCallback().
3525 *
3526 * @param $title Title
3527 * @param $parser Parser
3528 *
3529 * @return array
3530 */
3531 static function statelessFetchTemplate( $title, $parser = false ) {
3532 $text = $skip = false;
3533 $finalTitle = $title;
3534 $deps = array();
3535
3536 # Loop to fetch the article, with up to 1 redirect
3537 for ( $i = 0; $i < 2 && is_object( $title ); $i++ ) {
3538 # Give extensions a chance to select the revision instead
3539 $id = false; # Assume current
3540 wfRunHooks( 'BeforeParserFetchTemplateAndtitle',
3541 array( $parser, $title, &$skip, &$id ) );
3542
3543 if ( $skip ) {
3544 $text = false;
3545 $deps[] = array(
3546 'title' => $title,
3547 'page_id' => $title->getArticleID(),
3548 'rev_id' => null
3549 );
3550 break;
3551 }
3552 # Get the revision
3553 $rev = $id
3554 ? Revision::newFromId( $id )
3555 : Revision::newFromTitle( $title );
3556 $rev_id = $rev ? $rev->getId() : 0;
3557 # If there is no current revision, there is no page
3558 if ( $id === false && !$rev ) {
3559 $linkCache = LinkCache::singleton();
3560 $linkCache->addBadLinkObj( $title );
3561 }
3562
3563 $deps[] = array(
3564 'title' => $title,
3565 'page_id' => $title->getArticleID(),
3566 'rev_id' => $rev_id );
3567 if ( $rev && !$title->equals( $rev->getTitle() ) ) {
3568 # We fetched a rev from a different title; register it too...
3569 $deps[] = array(
3570 'title' => $rev->getTitle(),
3571 'page_id' => $rev->getPage(),
3572 'rev_id' => $rev_id );
3573 }
3574
3575 if ( $rev ) {
3576 $content = $rev->getContent();
3577 $text = $content->getWikitextForTransclusion();
3578
3579 if ( $text === false || $text === null ) {
3580 $text = false;
3581 break;
3582 }
3583 } elseif ( $title->getNamespace() == NS_MEDIAWIKI ) {
3584 global $wgContLang;
3585 $message = wfMessage( $wgContLang->lcfirst( $title->getText() ) )->inContentLanguage();
3586 if ( !$message->exists() ) {
3587 $text = false;
3588 break;
3589 }
3590 $content = $message->content();
3591 $text = $message->plain();
3592 } else {
3593 break;
3594 }
3595 if ( !$content ) {
3596 break;
3597 }
3598 # Redirect?
3599 $finalTitle = $title;
3600 $title = $content->getRedirectTarget();
3601 }
3602 return array(
3603 'text' => $text,
3604 'finalTitle' => $finalTitle,
3605 'deps' => $deps );
3606 }
3607
3608 /**
3609 * Fetch a file and its title and register a reference to it.
3610 * If 'broken' is a key in $options then the file will appear as a broken thumbnail.
3611 * @param Title $title
3612 * @param Array $options Array of options to RepoGroup::findFile
3613 * @return File|bool
3614 */
3615 function fetchFile( $title, $options = array() ) {
3616 $res = $this->fetchFileAndTitle( $title, $options );
3617 return $res[0];
3618 }
3619
3620 /**
3621 * Fetch a file and its title and register a reference to it.
3622 * If 'broken' is a key in $options then the file will appear as a broken thumbnail.
3623 * @param Title $title
3624 * @param Array $options Array of options to RepoGroup::findFile
3625 * @return Array ( File or false, Title of file )
3626 */
3627 function fetchFileAndTitle( $title, $options = array() ) {
3628 if ( isset( $options['broken'] ) ) {
3629 $file = false; // broken thumbnail forced by hook
3630 } elseif ( isset( $options['sha1'] ) ) { // get by (sha1,timestamp)
3631 $file = RepoGroup::singleton()->findFileFromKey( $options['sha1'], $options );
3632 } else { // get by (name,timestamp)
3633 $file = wfFindFile( $title, $options );
3634 }
3635 $time = $file ? $file->getTimestamp() : false;
3636 $sha1 = $file ? $file->getSha1() : false;
3637 # Register the file as a dependency...
3638 $this->mOutput->addImage( $title->getDBkey(), $time, $sha1 );
3639 if ( $file && !$title->equals( $file->getTitle() ) ) {
3640 # Update fetched file title
3641 $title = $file->getTitle();
3642 if ( is_null( $file->getRedirectedTitle() ) ) {
3643 # This file was not a redirect, but the title does not match.
3644 # Register under the new name because otherwise the link will
3645 # get lost.
3646 $this->mOutput->addImage( $title->getDBkey(), $time, $sha1 );
3647 }
3648 }
3649 return array( $file, $title );
3650 }
3651
3652 /**
3653 * Transclude an interwiki link.
3654 *
3655 * @param $title Title
3656 * @param $action
3657 *
3658 * @return string
3659 */
3660 function interwikiTransclude( $title, $action ) {
3661 global $wgEnableScaryTranscluding;
3662
3663 if ( !$wgEnableScaryTranscluding ) {
3664 return wfMsgForContent('scarytranscludedisabled');
3665 }
3666
3667 $url = $title->getFullUrl( "action=$action" );
3668
3669 if ( strlen( $url ) > 255 ) {
3670 return wfMsgForContent( 'scarytranscludetoolong' );
3671 }
3672 return $this->fetchScaryTemplateMaybeFromCache( $url );
3673 }
3674
3675 /**
3676 * @param $url string
3677 * @return Mixed|String
3678 */
3679 function fetchScaryTemplateMaybeFromCache( $url ) {
3680 global $wgTranscludeCacheExpiry;
3681 $dbr = wfGetDB( DB_SLAVE );
3682 $tsCond = $dbr->timestamp( time() - $wgTranscludeCacheExpiry );
3683 $obj = $dbr->selectRow( 'transcache', array('tc_time', 'tc_contents' ),
3684 array( 'tc_url' => $url, "tc_time >= " . $dbr->addQuotes( $tsCond ) ) );
3685 if ( $obj ) {
3686 return $obj->tc_contents;
3687 }
3688
3689 $text = Http::get( $url );
3690 if ( !$text ) {
3691 return wfMsgForContent( 'scarytranscludefailed', $url );
3692 }
3693
3694 $dbw = wfGetDB( DB_MASTER );
3695 $dbw->replace( 'transcache', array('tc_url'), array(
3696 'tc_url' => $url,
3697 'tc_time' => $dbw->timestamp( time() ),
3698 'tc_contents' => $text)
3699 );
3700 return $text;
3701 }
3702
3703 /**
3704 * Triple brace replacement -- used for template arguments
3705 * @private
3706 *
3707 * @param $piece array
3708 * @param $frame PPFrame
3709 *
3710 * @return array
3711 */
3712 function argSubstitution( $piece, $frame ) {
3713 wfProfileIn( __METHOD__ );
3714
3715 $error = false;
3716 $parts = $piece['parts'];
3717 $nameWithSpaces = $frame->expand( $piece['title'] );
3718 $argName = trim( $nameWithSpaces );
3719 $object = false;
3720 $text = $frame->getArgument( $argName );
3721 if ( $text === false && $parts->getLength() > 0
3722 && (
3723 $this->ot['html']
3724 || $this->ot['pre']
3725 || ( $this->ot['wiki'] && $frame->isTemplate() )
3726 )
3727 ) {
3728 # No match in frame, use the supplied default
3729 $object = $parts->item( 0 )->getChildren();
3730 }
3731 if ( !$this->incrementIncludeSize( 'arg', strlen( $text ) ) ) {
3732 $error = '<!-- WARNING: argument omitted, expansion size too large -->';
3733 $this->limitationWarn( 'post-expand-template-argument' );
3734 }
3735
3736 if ( $text === false && $object === false ) {
3737 # No match anywhere
3738 $object = $frame->virtualBracketedImplode( '{{{', '|', '}}}', $nameWithSpaces, $parts );
3739 }
3740 if ( $error !== false ) {
3741 $text .= $error;
3742 }
3743 if ( $object !== false ) {
3744 $ret = array( 'object' => $object );
3745 } else {
3746 $ret = array( 'text' => $text );
3747 }
3748
3749 wfProfileOut( __METHOD__ );
3750 return $ret;
3751 }
3752
3753 /**
3754 * Return the text to be used for a given extension tag.
3755 * This is the ghost of strip().
3756 *
3757 * @param $params array Associative array of parameters:
3758 * name PPNode for the tag name
3759 * attr PPNode for unparsed text where tag attributes are thought to be
3760 * attributes Optional associative array of parsed attributes
3761 * inner Contents of extension element
3762 * noClose Original text did not have a close tag
3763 * @param $frame PPFrame
3764 *
3765 * @return string
3766 */
3767 function extensionSubstitution( $params, $frame ) {
3768 $name = $frame->expand( $params['name'] );
3769 $attrText = !isset( $params['attr'] ) ? null : $frame->expand( $params['attr'] );
3770 $content = !isset( $params['inner'] ) ? null : $frame->expand( $params['inner'] );
3771 $marker = "{$this->mUniqPrefix}-$name-" . sprintf( '%08X', $this->mMarkerIndex++ ) . self::MARKER_SUFFIX;
3772
3773 $isFunctionTag = isset( $this->mFunctionTagHooks[strtolower($name)] ) &&
3774 ( $this->ot['html'] || $this->ot['pre'] );
3775 if ( $isFunctionTag ) {
3776 $markerType = 'none';
3777 } else {
3778 $markerType = 'general';
3779 }
3780 if ( $this->ot['html'] || $isFunctionTag ) {
3781 $name = strtolower( $name );
3782 $attributes = Sanitizer::decodeTagAttributes( $attrText );
3783 if ( isset( $params['attributes'] ) ) {
3784 $attributes = $attributes + $params['attributes'];
3785 }
3786
3787 if ( isset( $this->mTagHooks[$name] ) ) {
3788 # Workaround for PHP bug 35229 and similar
3789 if ( !is_callable( $this->mTagHooks[$name] ) ) {
3790 throw new MWException( "Tag hook for $name is not callable\n" );
3791 }
3792 $output = call_user_func_array( $this->mTagHooks[$name],
3793 array( $content, $attributes, $this, $frame ) );
3794 } elseif ( isset( $this->mFunctionTagHooks[$name] ) ) {
3795 list( $callback, $flags ) = $this->mFunctionTagHooks[$name];
3796 if ( !is_callable( $callback ) ) {
3797 throw new MWException( "Tag hook for $name is not callable\n" );
3798 }
3799
3800 $output = call_user_func_array( $callback, array( &$this, $frame, $content, $attributes ) );
3801 } else {
3802 $output = '<span class="error">Invalid tag extension name: ' .
3803 htmlspecialchars( $name ) . '</span>';
3804 }
3805
3806 if ( is_array( $output ) ) {
3807 # Extract flags to local scope (to override $markerType)
3808 $flags = $output;
3809 $output = $flags[0];
3810 unset( $flags[0] );
3811 extract( $flags );
3812 }
3813 } else {
3814 if ( is_null( $attrText ) ) {
3815 $attrText = '';
3816 }
3817 if ( isset( $params['attributes'] ) ) {
3818 foreach ( $params['attributes'] as $attrName => $attrValue ) {
3819 $attrText .= ' ' . htmlspecialchars( $attrName ) . '="' .
3820 htmlspecialchars( $attrValue ) . '"';
3821 }
3822 }
3823 if ( $content === null ) {
3824 $output = "<$name$attrText/>";
3825 } else {
3826 $close = is_null( $params['close'] ) ? '' : $frame->expand( $params['close'] );
3827 $output = "<$name$attrText>$content$close";
3828 }
3829 }
3830
3831 if ( $markerType === 'none' ) {
3832 return $output;
3833 } elseif ( $markerType === 'nowiki' ) {
3834 $this->mStripState->addNoWiki( $marker, $output );
3835 } elseif ( $markerType === 'general' ) {
3836 $this->mStripState->addGeneral( $marker, $output );
3837 } else {
3838 throw new MWException( __METHOD__.': invalid marker type' );
3839 }
3840 return $marker;
3841 }
3842
3843 /**
3844 * Increment an include size counter
3845 *
3846 * @param $type String: the type of expansion
3847 * @param $size Integer: the size of the text
3848 * @return Boolean: false if this inclusion would take it over the maximum, true otherwise
3849 */
3850 function incrementIncludeSize( $type, $size ) {
3851 if ( $this->mIncludeSizes[$type] + $size > $this->mOptions->getMaxIncludeSize() ) {
3852 return false;
3853 } else {
3854 $this->mIncludeSizes[$type] += $size;
3855 return true;
3856 }
3857 }
3858
3859 /**
3860 * Increment the expensive function count
3861 *
3862 * @return Boolean: false if the limit has been exceeded
3863 */
3864 function incrementExpensiveFunctionCount() {
3865 $this->mExpensiveFunctionCount++;
3866 return $this->mExpensiveFunctionCount <= $this->mOptions->getExpensiveParserFunctionLimit();
3867 }
3868
3869 /**
3870 * Strip double-underscore items like __NOGALLERY__ and __NOTOC__
3871 * Fills $this->mDoubleUnderscores, returns the modified text
3872 *
3873 * @param $text string
3874 *
3875 * @return string
3876 */
3877 function doDoubleUnderscore( $text ) {
3878 wfProfileIn( __METHOD__ );
3879
3880 # The position of __TOC__ needs to be recorded
3881 $mw = MagicWord::get( 'toc' );
3882 if ( $mw->match( $text ) ) {
3883 $this->mShowToc = true;
3884 $this->mForceTocPosition = true;
3885
3886 # Set a placeholder. At the end we'll fill it in with the TOC.
3887 $text = $mw->replace( '<!--MWTOC-->', $text, 1 );
3888
3889 # Only keep the first one.
3890 $text = $mw->replace( '', $text );
3891 }
3892
3893 # Now match and remove the rest of them
3894 $mwa = MagicWord::getDoubleUnderscoreArray();
3895 $this->mDoubleUnderscores = $mwa->matchAndRemove( $text );
3896
3897 if ( isset( $this->mDoubleUnderscores['nogallery'] ) ) {
3898 $this->mOutput->mNoGallery = true;
3899 }
3900 if ( isset( $this->mDoubleUnderscores['notoc'] ) && !$this->mForceTocPosition ) {
3901 $this->mShowToc = false;
3902 }
3903 if ( isset( $this->mDoubleUnderscores['hiddencat'] ) && $this->mTitle->getNamespace() == NS_CATEGORY ) {
3904 $this->addTrackingCategory( 'hidden-category-category' );
3905 }
3906 # (bug 8068) Allow control over whether robots index a page.
3907 #
3908 # @todo FIXME: Bug 14899: __INDEX__ always overrides __NOINDEX__ here! This
3909 # is not desirable, the last one on the page should win.
3910 if ( isset( $this->mDoubleUnderscores['noindex'] ) && $this->mTitle->canUseNoindex() ) {
3911 $this->mOutput->setIndexPolicy( 'noindex' );
3912 $this->addTrackingCategory( 'noindex-category' );
3913 }
3914 if ( isset( $this->mDoubleUnderscores['index'] ) && $this->mTitle->canUseNoindex() ) {
3915 $this->mOutput->setIndexPolicy( 'index' );
3916 $this->addTrackingCategory( 'index-category' );
3917 }
3918
3919 # Cache all double underscores in the database
3920 foreach ( $this->mDoubleUnderscores as $key => $val ) {
3921 $this->mOutput->setProperty( $key, '' );
3922 }
3923
3924 wfProfileOut( __METHOD__ );
3925 return $text;
3926 }
3927
3928 /**
3929 * Add a tracking category, getting the title from a system message,
3930 * or print a debug message if the title is invalid.
3931 *
3932 * @param $msg String: message key
3933 * @return Boolean: whether the addition was successful
3934 */
3935 public function addTrackingCategory( $msg ) {
3936 if ( $this->mTitle->getNamespace() === NS_SPECIAL ) {
3937 wfDebug( __METHOD__.": Not adding tracking category $msg to special page!\n" );
3938 return false;
3939 }
3940 // Important to parse with correct title (bug 31469)
3941 $cat = wfMessage( $msg )
3942 ->title( $this->getTitle() )
3943 ->inContentLanguage()
3944 ->text();
3945
3946 # Allow tracking categories to be disabled by setting them to "-"
3947 if ( $cat === '-' ) {
3948 return false;
3949 }
3950
3951 $containerCategory = Title::makeTitleSafe( NS_CATEGORY, $cat );
3952 if ( $containerCategory ) {
3953 $this->mOutput->addCategory( $containerCategory->getDBkey(), $this->getDefaultSort() );
3954 return true;
3955 } else {
3956 wfDebug( __METHOD__.": [[MediaWiki:$msg]] is not a valid title!\n" );
3957 return false;
3958 }
3959 }
3960
3961 /**
3962 * This function accomplishes several tasks:
3963 * 1) Auto-number headings if that option is enabled
3964 * 2) Add an [edit] link to sections for users who have enabled the option and can edit the page
3965 * 3) Add a Table of contents on the top for users who have enabled the option
3966 * 4) Auto-anchor headings
3967 *
3968 * It loops through all headlines, collects the necessary data, then splits up the
3969 * string and re-inserts the newly formatted headlines.
3970 *
3971 * @param $text String
3972 * @param $origText String: original, untouched wikitext
3973 * @param $isMain Boolean
3974 * @return mixed|string
3975 * @private
3976 */
3977 function formatHeadings( $text, $origText, $isMain=true ) {
3978 global $wgMaxTocLevel, $wgHtml5, $wgExperimentalHtmlIds;
3979
3980 # Inhibit editsection links if requested in the page
3981 if ( isset( $this->mDoubleUnderscores['noeditsection'] ) ) {
3982 $maybeShowEditLink = $showEditLink = false;
3983 } else {
3984 $maybeShowEditLink = true; /* Actual presence will depend on ParserOptions option */
3985 $showEditLink = $this->mOptions->getEditSection();
3986 }
3987 if ( $showEditLink ) {
3988 $this->mOutput->setEditSectionTokens( true );
3989 }
3990
3991 # Get all headlines for numbering them and adding funky stuff like [edit]
3992 # links - this is for later, but we need the number of headlines right now
3993 $matches = array();
3994 $numMatches = preg_match_all( '/<H(?P<level>[1-6])(?P<attrib>.*?'.'>)(?P<header>.*?)<\/H[1-6] *>/i', $text, $matches );
3995
3996 # if there are fewer than 4 headlines in the article, do not show TOC
3997 # unless it's been explicitly enabled.
3998 $enoughToc = $this->mShowToc &&
3999 ( ( $numMatches >= 4 ) || $this->mForceTocPosition );
4000
4001 # Allow user to stipulate that a page should have a "new section"
4002 # link added via __NEWSECTIONLINK__
4003 if ( isset( $this->mDoubleUnderscores['newsectionlink'] ) ) {
4004 $this->mOutput->setNewSection( true );
4005 }
4006
4007 # Allow user to remove the "new section"
4008 # link via __NONEWSECTIONLINK__
4009 if ( isset( $this->mDoubleUnderscores['nonewsectionlink'] ) ) {
4010 $this->mOutput->hideNewSection( true );
4011 }
4012
4013 # if the string __FORCETOC__ (not case-sensitive) occurs in the HTML,
4014 # override above conditions and always show TOC above first header
4015 if ( isset( $this->mDoubleUnderscores['forcetoc'] ) ) {
4016 $this->mShowToc = true;
4017 $enoughToc = true;
4018 }
4019
4020 # headline counter
4021 $headlineCount = 0;
4022 $numVisible = 0;
4023
4024 # Ugh .. the TOC should have neat indentation levels which can be
4025 # passed to the skin functions. These are determined here
4026 $toc = '';
4027 $full = '';
4028 $head = array();
4029 $sublevelCount = array();
4030 $levelCount = array();
4031 $level = 0;
4032 $prevlevel = 0;
4033 $toclevel = 0;
4034 $prevtoclevel = 0;
4035 $markerRegex = "{$this->mUniqPrefix}-h-(\d+)-" . self::MARKER_SUFFIX;
4036 $baseTitleText = $this->mTitle->getPrefixedDBkey();
4037 $oldType = $this->mOutputType;
4038 $this->setOutputType( self::OT_WIKI );
4039 $frame = $this->getPreprocessor()->newFrame();
4040 $root = $this->preprocessToDom( $origText );
4041 $node = $root->getFirstChild();
4042 $byteOffset = 0;
4043 $tocraw = array();
4044 $refers = array();
4045
4046 foreach ( $matches[3] as $headline ) {
4047 $isTemplate = false;
4048 $titleText = false;
4049 $sectionIndex = false;
4050 $numbering = '';
4051 $markerMatches = array();
4052 if ( preg_match("/^$markerRegex/", $headline, $markerMatches ) ) {
4053 $serial = $markerMatches[1];
4054 list( $titleText, $sectionIndex ) = $this->mHeadings[$serial];
4055 $isTemplate = ( $titleText != $baseTitleText );
4056 $headline = preg_replace( "/^$markerRegex/", "", $headline );
4057 }
4058
4059 if ( $toclevel ) {
4060 $prevlevel = $level;
4061 }
4062 $level = $matches[1][$headlineCount];
4063
4064 if ( $level > $prevlevel ) {
4065 # Increase TOC level
4066 $toclevel++;
4067 $sublevelCount[$toclevel] = 0;
4068 if ( $toclevel<$wgMaxTocLevel ) {
4069 $prevtoclevel = $toclevel;
4070 $toc .= Linker::tocIndent();
4071 $numVisible++;
4072 }
4073 } elseif ( $level < $prevlevel && $toclevel > 1 ) {
4074 # Decrease TOC level, find level to jump to
4075
4076 for ( $i = $toclevel; $i > 0; $i-- ) {
4077 if ( $levelCount[$i] == $level ) {
4078 # Found last matching level
4079 $toclevel = $i;
4080 break;
4081 } elseif ( $levelCount[$i] < $level ) {
4082 # Found first matching level below current level
4083 $toclevel = $i + 1;
4084 break;
4085 }
4086 }
4087 if ( $i == 0 ) {
4088 $toclevel = 1;
4089 }
4090 if ( $toclevel<$wgMaxTocLevel ) {
4091 if ( $prevtoclevel < $wgMaxTocLevel ) {
4092 # Unindent only if the previous toc level was shown :p
4093 $toc .= Linker::tocUnindent( $prevtoclevel - $toclevel );
4094 $prevtoclevel = $toclevel;
4095 } else {
4096 $toc .= Linker::tocLineEnd();
4097 }
4098 }
4099 } else {
4100 # No change in level, end TOC line
4101 if ( $toclevel<$wgMaxTocLevel ) {
4102 $toc .= Linker::tocLineEnd();
4103 }
4104 }
4105
4106 $levelCount[$toclevel] = $level;
4107
4108 # count number of headlines for each level
4109 @$sublevelCount[$toclevel]++;
4110 $dot = 0;
4111 for( $i = 1; $i <= $toclevel; $i++ ) {
4112 if ( !empty( $sublevelCount[$i] ) ) {
4113 if ( $dot ) {
4114 $numbering .= '.';
4115 }
4116 $numbering .= $this->getTargetLanguage()->formatNum( $sublevelCount[$i] );
4117 $dot = 1;
4118 }
4119 }
4120
4121 # The safe header is a version of the header text safe to use for links
4122
4123 # Remove link placeholders by the link text.
4124 # <!--LINK number-->
4125 # turns into
4126 # link text with suffix
4127 # Do this before unstrip since link text can contain strip markers
4128 $safeHeadline = $this->replaceLinkHoldersText( $headline );
4129
4130 # Avoid insertion of weird stuff like <math> by expanding the relevant sections
4131 $safeHeadline = $this->mStripState->unstripBoth( $safeHeadline );
4132
4133 # Strip out HTML (first regex removes any tag not allowed)
4134 # Allowed tags are <sup> and <sub> (bug 8393), <i> (bug 26375) and <b> (r105284)
4135 # We strip any parameter from accepted tags (second regex)
4136 $tocline = preg_replace(
4137 array( '#<(?!/?(sup|sub|i|b)(?: [^>]*)?>).*?'.'>#', '#<(/?(sup|sub|i|b))(?: .*?)?'.'>#' ),
4138 array( '', '<$1>' ),
4139 $safeHeadline
4140 );
4141 $tocline = trim( $tocline );
4142
4143 # For the anchor, strip out HTML-y stuff period
4144 $safeHeadline = preg_replace( '/<.*?'.'>/', '', $safeHeadline );
4145 $safeHeadline = Sanitizer::normalizeSectionNameWhitespace( $safeHeadline );
4146
4147 # Save headline for section edit hint before it's escaped
4148 $headlineHint = $safeHeadline;
4149
4150 if ( $wgHtml5 && $wgExperimentalHtmlIds ) {
4151 # For reverse compatibility, provide an id that's
4152 # HTML4-compatible, like we used to.
4153 #
4154 # It may be worth noting, academically, that it's possible for
4155 # the legacy anchor to conflict with a non-legacy headline
4156 # anchor on the page. In this case likely the "correct" thing
4157 # would be to either drop the legacy anchors or make sure
4158 # they're numbered first. However, this would require people
4159 # to type in section names like "abc_.D7.93.D7.90.D7.A4"
4160 # manually, so let's not bother worrying about it.
4161 $legacyHeadline = Sanitizer::escapeId( $safeHeadline,
4162 array( 'noninitial', 'legacy' ) );
4163 $safeHeadline = Sanitizer::escapeId( $safeHeadline );
4164
4165 if ( $legacyHeadline == $safeHeadline ) {
4166 # No reason to have both (in fact, we can't)
4167 $legacyHeadline = false;
4168 }
4169 } else {
4170 $legacyHeadline = false;
4171 $safeHeadline = Sanitizer::escapeId( $safeHeadline,
4172 'noninitial' );
4173 }
4174
4175 # HTML names must be case-insensitively unique (bug 10721).
4176 # This does not apply to Unicode characters per
4177 # http://dev.w3.org/html5/spec/infrastructure.html#case-sensitivity-and-string-comparison
4178 # @todo FIXME: We may be changing them depending on the current locale.
4179 $arrayKey = strtolower( $safeHeadline );
4180 if ( $legacyHeadline === false ) {
4181 $legacyArrayKey = false;
4182 } else {
4183 $legacyArrayKey = strtolower( $legacyHeadline );
4184 }
4185
4186 # count how many in assoc. array so we can track dupes in anchors
4187 if ( isset( $refers[$arrayKey] ) ) {
4188 $refers[$arrayKey]++;
4189 } else {
4190 $refers[$arrayKey] = 1;
4191 }
4192 if ( isset( $refers[$legacyArrayKey] ) ) {
4193 $refers[$legacyArrayKey]++;
4194 } else {
4195 $refers[$legacyArrayKey] = 1;
4196 }
4197
4198 # Don't number the heading if it is the only one (looks silly)
4199 if ( count( $matches[3] ) > 1 && $this->mOptions->getNumberHeadings() ) {
4200 # the two are different if the line contains a link
4201 $headline = Html::element( 'span', array( 'class' => 'mw-headline-number' ), $numbering ) . ' ' . $headline;
4202 }
4203
4204 # Create the anchor for linking from the TOC to the section
4205 $anchor = $safeHeadline;
4206 $legacyAnchor = $legacyHeadline;
4207 if ( $refers[$arrayKey] > 1 ) {
4208 $anchor .= '_' . $refers[$arrayKey];
4209 }
4210 if ( $legacyHeadline !== false && $refers[$legacyArrayKey] > 1 ) {
4211 $legacyAnchor .= '_' . $refers[$legacyArrayKey];
4212 }
4213 if ( $enoughToc && ( !isset( $wgMaxTocLevel ) || $toclevel < $wgMaxTocLevel ) ) {
4214 $toc .= Linker::tocLine( $anchor, $tocline,
4215 $numbering, $toclevel, ( $isTemplate ? false : $sectionIndex ) );
4216 }
4217
4218 # Add the section to the section tree
4219 # Find the DOM node for this header
4220 while ( $node && !$isTemplate ) {
4221 if ( $node->getName() === 'h' ) {
4222 $bits = $node->splitHeading();
4223 if ( $bits['i'] == $sectionIndex ) {
4224 break;
4225 }
4226 }
4227 $byteOffset += mb_strlen( $this->mStripState->unstripBoth(
4228 $frame->expand( $node, PPFrame::RECOVER_ORIG ) ) );
4229 $node = $node->getNextSibling();
4230 }
4231 $tocraw[] = array(
4232 'toclevel' => $toclevel,
4233 'level' => $level,
4234 'line' => $tocline,
4235 'number' => $numbering,
4236 'index' => ( $isTemplate ? 'T-' : '' ) . $sectionIndex,
4237 'fromtitle' => $titleText,
4238 'byteoffset' => ( $isTemplate ? null : $byteOffset ),
4239 'anchor' => $anchor,
4240 );
4241
4242 # give headline the correct <h#> tag
4243 if ( $maybeShowEditLink && $sectionIndex !== false ) {
4244 // Output edit section links as markers with styles that can be customized by skins
4245 if ( $isTemplate ) {
4246 # Put a T flag in the section identifier, to indicate to extractSections()
4247 # that sections inside <includeonly> should be counted.
4248 $editlinkArgs = array( $titleText, "T-$sectionIndex"/*, null */ );
4249 } else {
4250 $editlinkArgs = array( $this->mTitle->getPrefixedText(), $sectionIndex, $headlineHint );
4251 }
4252 // We use a bit of pesudo-xml for editsection markers. The language converter is run later on
4253 // Using a UNIQ style marker leads to the converter screwing up the tokens when it converts stuff
4254 // And trying to insert strip tags fails too. At this point all real inputted tags have already been escaped
4255 // so we don't have to worry about a user trying to input one of these markers directly.
4256 // We use a page and section attribute to stop the language converter from converting these important bits
4257 // of data, but put the headline hint inside a content block because the language converter is supposed to
4258 // be able to convert that piece of data.
4259 $editlink = '<mw:editsection page="' . htmlspecialchars($editlinkArgs[0]);
4260 $editlink .= '" section="' . htmlspecialchars($editlinkArgs[1]) .'"';
4261 if ( isset($editlinkArgs[2]) ) {
4262 $editlink .= '>' . $editlinkArgs[2] . '</mw:editsection>';
4263 } else {
4264 $editlink .= '/>';
4265 }
4266 } else {
4267 $editlink = '';
4268 }
4269 $head[$headlineCount] = Linker::makeHeadline( $level,
4270 $matches['attrib'][$headlineCount], $anchor, $headline,
4271 $editlink, $legacyAnchor );
4272
4273 $headlineCount++;
4274 }
4275
4276 $this->setOutputType( $oldType );
4277
4278 # Never ever show TOC if no headers
4279 if ( $numVisible < 1 ) {
4280 $enoughToc = false;
4281 }
4282
4283 if ( $enoughToc ) {
4284 if ( $prevtoclevel > 0 && $prevtoclevel < $wgMaxTocLevel ) {
4285 $toc .= Linker::tocUnindent( $prevtoclevel - 1 );
4286 }
4287 $toc = Linker::tocList( $toc, $this->mOptions->getUserLangObj() );
4288 $this->mOutput->setTOCHTML( $toc );
4289 }
4290
4291 if ( $isMain ) {
4292 $this->mOutput->setSections( $tocraw );
4293 }
4294
4295 # split up and insert constructed headlines
4296 $blocks = preg_split( '/<H[1-6].*?' . '>.*?<\/H[1-6]>/i', $text );
4297 $i = 0;
4298
4299 // build an array of document sections
4300 $sections = array();
4301 foreach ( $blocks as $block ) {
4302 // $head is zero-based, sections aren't.
4303 if ( empty( $head[$i - 1] ) ) {
4304 $sections[$i] = $block;
4305 } else {
4306 $sections[$i] = $head[$i - 1] . $block;
4307 }
4308
4309 /**
4310 * Send a hook, one per section.
4311 * The idea here is to be able to make section-level DIVs, but to do so in a
4312 * lower-impact, more correct way than r50769
4313 *
4314 * $this : caller
4315 * $section : the section number
4316 * &$sectionContent : ref to the content of the section
4317 * $showEditLinks : boolean describing whether this section has an edit link
4318 */
4319 wfRunHooks( 'ParserSectionCreate', array( $this, $i, &$sections[$i], $showEditLink ) );
4320
4321 $i++;
4322 }
4323
4324 if ( $enoughToc && $isMain && !$this->mForceTocPosition ) {
4325 // append the TOC at the beginning
4326 // Top anchor now in skin
4327 $sections[0] = $sections[0] . $toc . "\n";
4328 }
4329
4330 $full .= join( '', $sections );
4331
4332 if ( $this->mForceTocPosition ) {
4333 return str_replace( '<!--MWTOC-->', $toc, $full );
4334 } else {
4335 return $full;
4336 }
4337 }
4338
4339 /**
4340 * Transform wiki markup when saving a page by doing "\r\n" -> "\n"
4341 * conversion, substitting signatures, {{subst:}} templates, etc.
4342 *
4343 * @param $text String: the text to transform
4344 * @param $title Title: the Title object for the current article
4345 * @param $user User: the User object describing the current user
4346 * @param $options ParserOptions: parsing options
4347 * @param $clearState Boolean: whether to clear the parser state first
4348 * @return String: the altered wiki markup
4349 */
4350 public function preSaveTransform( $text, Title $title, User $user, ParserOptions $options, $clearState = true ) {
4351 $this->startParse( $title, $options, self::OT_WIKI, $clearState );
4352 $this->setUser( $user );
4353
4354 $pairs = array(
4355 "\r\n" => "\n",
4356 );
4357 $text = str_replace( array_keys( $pairs ), array_values( $pairs ), $text );
4358 if( $options->getPreSaveTransform() ) {
4359 $text = $this->pstPass2( $text, $user );
4360 }
4361 $text = $this->mStripState->unstripBoth( $text );
4362
4363 $this->setUser( null ); #Reset
4364
4365 return $text;
4366 }
4367
4368 /**
4369 * Pre-save transform helper function
4370 * @private
4371 *
4372 * @param $text string
4373 * @param $user User
4374 *
4375 * @return string
4376 */
4377 function pstPass2( $text, $user ) {
4378 global $wgContLang, $wgLocaltimezone;
4379
4380 # Note: This is the timestamp saved as hardcoded wikitext to
4381 # the database, we use $wgContLang here in order to give
4382 # everyone the same signature and use the default one rather
4383 # than the one selected in each user's preferences.
4384 # (see also bug 12815)
4385 $ts = $this->mOptions->getTimestamp();
4386 if ( isset( $wgLocaltimezone ) ) {
4387 $tz = $wgLocaltimezone;
4388 } else {
4389 $tz = date_default_timezone_get();
4390 }
4391
4392 $unixts = wfTimestamp( TS_UNIX, $ts );
4393 $oldtz = date_default_timezone_get();
4394 date_default_timezone_set( $tz );
4395 $ts = date( 'YmdHis', $unixts );
4396 $tzMsg = date( 'T', $unixts ); # might vary on DST changeover!
4397
4398 # Allow translation of timezones through wiki. date() can return
4399 # whatever crap the system uses, localised or not, so we cannot
4400 # ship premade translations.
4401 $key = 'timezone-' . strtolower( trim( $tzMsg ) );
4402 $msg = wfMessage( $key )->inContentLanguage();
4403 if ( $msg->exists() ) {
4404 $tzMsg = $msg->text();
4405 }
4406
4407 date_default_timezone_set( $oldtz );
4408
4409 $d = $wgContLang->timeanddate( $ts, false, false ) . " ($tzMsg)";
4410
4411 # Variable replacement
4412 # Because mOutputType is OT_WIKI, this will only process {{subst:xxx}} type tags
4413 $text = $this->replaceVariables( $text );
4414
4415 # This works almost by chance, as the replaceVariables are done before the getUserSig(),
4416 # which may corrupt this parser instance via its wfMsgExt( parsemag ) call-
4417
4418 # Signatures
4419 $sigText = $this->getUserSig( $user );
4420 $text = strtr( $text, array(
4421 '~~~~~' => $d,
4422 '~~~~' => "$sigText $d",
4423 '~~~' => $sigText
4424 ) );
4425
4426 # Context links: [[|name]] and [[name (context)|]]
4427 $tc = '[' . Title::legalChars() . ']';
4428 $nc = '[ _0-9A-Za-z\x80-\xff-]'; # Namespaces can use non-ascii!
4429
4430 $p1 = "/\[\[(:?$nc+:|:|)($tc+?)( ?\\($tc+\\))\\|]]/"; # [[ns:page (context)|]]
4431 $p4 = "/\[\[(:?$nc+:|:|)($tc+?)( ?（$tc+）)\\|]]/"; # [[ns:page（context）|]]
4432 $p3 = "/\[\[(:?$nc+:|:|)($tc+?)( ?\\($tc+\\)|)((?:, |，)$tc+|)\\|]]/"; # [[ns:page (context), context|]]
4433 $p2 = "/\[\[\\|($tc+)]]/"; # [[|page]]
4434
4435 # try $p1 first, to turn "[[A, B (C)|]]" into "[[A, B (C)|A, B]]"
4436 $text = preg_replace( $p1, '[[\\1\\2\\3|\\2]]', $text );
4437 $text = preg_replace( $p4, '[[\\1\\2\\3|\\2]]', $text );
4438 $text = preg_replace( $p3, '[[\\1\\2\\3\\4|\\2]]', $text );
4439
4440 $t = $this->mTitle->getText();
4441 $m = array();
4442 if ( preg_match( "/^($nc+:|)$tc+?( \\($tc+\\))$/", $t, $m ) ) {
4443 $text = preg_replace( $p2, "[[$m[1]\\1$m[2]|\\1]]", $text );
4444 } elseif ( preg_match( "/^($nc+:|)$tc+?(, $tc+|)$/", $t, $m ) && "$m[1]$m[2]" != '' ) {
4445 $text = preg_replace( $p2, "[[$m[1]\\1$m[2]|\\1]]", $text );
4446 } else {
4447 # if there's no context, don't bother duplicating the title
4448 $text = preg_replace( $p2, '[[\\1]]', $text );
4449 }
4450
4451 # Trim trailing whitespace
4452 $text = rtrim( $text );
4453
4454 return $text;
4455 }
4456
4457 /**
4458 * Fetch the user's signature text, if any, and normalize to
4459 * validated, ready-to-insert wikitext.
4460 * If you have pre-fetched the nickname or the fancySig option, you can
4461 * specify them here to save a database query.
4462 * Do not reuse this parser instance after calling getUserSig(),
4463 * as it may have changed if it's the $wgParser.
4464 *
4465 * @param $user User
4466 * @param $nickname String|bool nickname to use or false to use user's default nickname
4467 * @param $fancySig Boolean|null whether the nicknname is the complete signature
4468 * or null to use default value
4469 * @return string
4470 */
4471 function getUserSig( &$user, $nickname = false, $fancySig = null ) {
4472 global $wgMaxSigChars;
4473
4474 $username = $user->getName();
4475
4476 # If not given, retrieve from the user object.
4477 if ( $nickname === false )
4478 $nickname = $user->getOption( 'nickname' );
4479
4480 if ( is_null( $fancySig ) ) {
4481 $fancySig = $user->getBoolOption( 'fancysig' );
4482 }
4483
4484 $nickname = $nickname == null ? $username : $nickname;
4485
4486 if ( mb_strlen( $nickname ) > $wgMaxSigChars ) {
4487 $nickname = $username;
4488 wfDebug( __METHOD__ . ": $username has overlong signature.\n" );
4489 } elseif ( $fancySig !== false ) {
4490 # Sig. might contain markup; validate this
4491 if ( $this->validateSig( $nickname ) !== false ) {
4492 # Validated; clean up (if needed) and return it
4493 return $this->cleanSig( $nickname, true );
4494 } else {
4495 # Failed to validate; fall back to the default
4496 $nickname = $username;
4497 wfDebug( __METHOD__.": $username has bad XML tags in signature.\n" );
4498 }
4499 }
4500
4501 # Make sure nickname doesnt get a sig in a sig
4502 $nickname = self::cleanSigInSig( $nickname );
4503
4504 # If we're still here, make it a link to the user page
4505 $userText = wfEscapeWikiText( $username );
4506 $nickText = wfEscapeWikiText( $nickname );
4507 $msgName = $user->isAnon() ? 'signature-anon' : 'signature';
4508
4509 return wfMessage( $msgName, $userText, $nickText )->inContentLanguage()->title( $this->getTitle() )->text();
4510 }
4511
4512 /**
4513 * Check that the user's signature contains no bad XML
4514 *
4515 * @param $text String
4516 * @return mixed An expanded string, or false if invalid.
4517 */
4518 function validateSig( $text ) {
4519 return( Xml::isWellFormedXmlFragment( $text ) ? $text : false );
4520 }
4521
4522 /**
4523 * Clean up signature text
4524 *
4525 * 1) Strip ~~~, ~~~~ and ~~~~~ out of signatures @see cleanSigInSig
4526 * 2) Substitute all transclusions
4527 *
4528 * @param $text String
4529 * @param $parsing bool Whether we're cleaning (preferences save) or parsing
4530 * @return String: signature text
4531 */
4532 public function cleanSig( $text, $parsing = false ) {
4533 if ( !$parsing ) {
4534 global $wgTitle;
4535 $this->startParse( $wgTitle, new ParserOptions, self::OT_PREPROCESS, true );
4536 }
4537
4538 # Option to disable this feature
4539 if ( !$this->mOptions->getCleanSignatures() ) {
4540 return $text;
4541 }
4542
4543 # @todo FIXME: Regex doesn't respect extension tags or nowiki
4544 # => Move this logic to braceSubstitution()
4545 $substWord = MagicWord::get( 'subst' );
4546 $substRegex = '/\{\{(?!(?:' . $substWord->getBaseRegex() . '))/x' . $substWord->getRegexCase();
4547 $substText = '{{' . $substWord->getSynonym( 0 );
4548
4549 $text = preg_replace( $substRegex, $substText, $text );
4550 $text = self::cleanSigInSig( $text );
4551 $dom = $this->preprocessToDom( $text );
4552 $frame = $this->getPreprocessor()->newFrame();
4553 $text = $frame->expand( $dom );
4554
4555 if ( !$parsing ) {
4556 $text = $this->mStripState->unstripBoth( $text );
4557 }
4558
4559 return $text;
4560 }
4561
4562 /**
4563 * Strip ~~~, ~~~~ and ~~~~~ out of signatures
4564 *
4565 * @param $text String
4566 * @return String: signature text with /~{3,5}/ removed
4567 */
4568 public static function cleanSigInSig( $text ) {
4569 $text = preg_replace( '/~{3,5}/', '', $text );
4570 return $text;
4571 }
4572
4573 /**
4574 * Set up some variables which are usually set up in parse()
4575 * so that an external function can call some class members with confidence
4576 *
4577 * @param $title Title|null
4578 * @param $options ParserOptions
4579 * @param $outputType
4580 * @param $clearState bool
4581 */
4582 public function startExternalParse( Title $title = null, ParserOptions $options, $outputType, $clearState = true ) {
4583 $this->startParse( $title, $options, $outputType, $clearState );
4584 }
4585
4586 /**
4587 * @param $title Title|null
4588 * @param $options ParserOptions
4589 * @param $outputType
4590 * @param $clearState bool
4591 */
4592 private function startParse( Title $title = null, ParserOptions $options, $outputType, $clearState = true ) {
4593 $this->setTitle( $title );
4594 $this->mOptions = $options;
4595 $this->setOutputType( $outputType );
4596 if ( $clearState ) {
4597 $this->clearState();
4598 }
4599 }
4600
4601 /**
4602 * Wrapper for preprocess()
4603 *
4604 * @param $text String: the text to preprocess
4605 * @param $options ParserOptions: options
4606 * @param $title Title object or null to use $wgTitle
4607 * @return String
4608 */
4609 public function transformMsg( $text, $options, $title = null ) {
4610 static $executing = false;
4611
4612 # Guard against infinite recursion
4613 if ( $executing ) {
4614 return $text;
4615 }
4616 $executing = true;
4617
4618 wfProfileIn( __METHOD__ );
4619 if ( !$title ) {
4620 global $wgTitle;
4621 $title = $wgTitle;
4622 }
4623 if ( !$title ) {
4624 # It's not uncommon having a null $wgTitle in scripts. See r80898
4625 # Create a ghost title in such case
4626 $title = Title::newFromText( 'Dwimmerlaik' );
4627 }
4628 $text = $this->preprocess( $text, $title, $options );
4629
4630 $executing = false;
4631 wfProfileOut( __METHOD__ );
4632 return $text;
4633 }
4634
4635 /**
4636 * Create an HTML-style tag, e.g. "<yourtag>special text</yourtag>"
4637 * The callback should have the following form:
4638 * function myParserHook( $text, $params, $parser, $frame ) { ... }
4639 *
4640 * Transform and return $text. Use $parser for any required context, e.g. use
4641 * $parser->getTitle() and $parser->getOptions() not $wgTitle or $wgOut->mParserOptions
4642 *
4643 * Hooks may return extended information by returning an array, of which the
4644 * first numbered element (index 0) must be the return string, and all other
4645 * entries are extracted into local variables within an internal function
4646 * in the Parser class.
4647 *
4648 * This interface (introduced r61913) appears to be undocumented, but
4649 * 'markerName' is used by some core tag hooks to override which strip
4650 * array their results are placed in. **Use great caution if attempting
4651 * this interface, as it is not documented and injudicious use could smash
4652 * private variables.**
4653 *
4654 * @param $tag Mixed: the tag to use, e.g. 'hook' for "<hook>"
4655 * @param $callback Mixed: the callback function (and object) to use for the tag
4656 * @return Mixed|null The old value of the mTagHooks array associated with the hook
4657 */
4658 public function setHook( $tag, $callback ) {
4659 $tag = strtolower( $tag );
4660 if ( preg_match( '/[<>\r\n]/', $tag, $m ) ) {
4661 throw new MWException( "Invalid character {$m[0]} in setHook('$tag', ...) call" );
4662 }
4663 $oldVal = isset( $this->mTagHooks[$tag] ) ? $this->mTagHooks[$tag] : null;
4664 $this->mTagHooks[$tag] = $callback;
4665 if ( !in_array( $tag, $this->mStripList ) ) {
4666 $this->mStripList[] = $tag;
4667 }
4668
4669 return $oldVal;
4670 }
4671
4672 /**
4673 * As setHook(), but letting the contents be parsed.
4674 *
4675 * Transparent tag hooks are like regular XML-style tag hooks, except they
4676 * operate late in the transformation sequence, on HTML instead of wikitext.
4677 *
4678 * This is probably obsoleted by things dealing with parser frames?
4679 * The only extension currently using it is geoserver.
4680 *
4681 * @since 1.10
4682 * @todo better document or deprecate this
4683 *
4684 * @param $tag Mixed: the tag to use, e.g. 'hook' for "<hook>"
4685 * @param $callback Mixed: the callback function (and object) to use for the tag
4686 * @return Mixed|null The old value of the mTagHooks array associated with the hook
4687 */
4688 function setTransparentTagHook( $tag, $callback ) {
4689 $tag = strtolower( $tag );
4690 if ( preg_match( '/[<>\r\n]/', $tag, $m ) ) {
4691 throw new MWException( "Invalid character {$m[0]} in setTransparentHook('$tag', ...) call" );
4692 }
4693 $oldVal = isset( $this->mTransparentTagHooks[$tag] ) ? $this->mTransparentTagHooks[$tag] : null;
4694 $this->mTransparentTagHooks[$tag] = $callback;
4695
4696 return $oldVal;
4697 }
4698
4699 /**
4700 * Remove all tag hooks
4701 */
4702 function clearTagHooks() {
4703 $this->mTagHooks = array();
4704 $this->mFunctionTagHooks = array();
4705 $this->mStripList = $this->mDefaultStripList;
4706 }
4707
4708 /**
4709 * Create a function, e.g. {{sum:1|2|3}}
4710 * The callback function should have the form:
4711 * function myParserFunction( &$parser, $arg1, $arg2, $arg3 ) { ... }
4712 *
4713 * Or with SFH_OBJECT_ARGS:
4714 * function myParserFunction( $parser, $frame, $args ) { ... }
4715 *
4716 * The callback may either return the text result of the function, or an array with the text
4717 * in element 0, and a number of flags in the other elements. The names of the flags are
4718 * specified in the keys. Valid flags are:
4719 * found The text returned is valid, stop processing the template. This
4720 * is on by default.
4721 * nowiki Wiki markup in the return value should be escaped
4722 * isHTML The returned text is HTML, armour it against wikitext transformation
4723 *
4724 * @param $id String: The magic word ID
4725 * @param $callback Mixed: the callback function (and object) to use
4726 * @param $flags Integer: a combination of the following flags:
4727 * SFH_NO_HASH No leading hash, i.e. {{plural:...}} instead of {{#if:...}}
4728 *
4729 * SFH_OBJECT_ARGS Pass the template arguments as PPNode objects instead of text. This
4730 * allows for conditional expansion of the parse tree, allowing you to eliminate dead
4731 * branches and thus speed up parsing. It is also possible to analyse the parse tree of
4732 * the arguments, and to control the way they are expanded.
4733 *
4734 * The $frame parameter is a PPFrame. This can be used to produce expanded text from the
4735 * arguments, for instance:
4736 * $text = isset( $args[0] ) ? $frame->expand( $args[0] ) : '';
4737 *
4738 * For technical reasons, $args[0] is pre-expanded and will be a string. This may change in
4739 * future versions. Please call $frame->expand() on it anyway so that your code keeps
4740 * working if/when this is changed.
4741 *
4742 * If you want whitespace to be trimmed from $args, you need to do it yourself, post-
4743 * expansion.
4744 *
4745 * Please read the documentation in includes/parser/Preprocessor.php for more information
4746 * about the methods available in PPFrame and PPNode.
4747 *
4748 * @return string|callback The old callback function for this name, if any
4749 */
4750 public function setFunctionHook( $id, $callback, $flags = 0 ) {
4751 global $wgContLang;
4752
4753 $oldVal = isset( $this->mFunctionHooks[$id] ) ? $this->mFunctionHooks[$id][0] : null;
4754 $this->mFunctionHooks[$id] = array( $callback, $flags );
4755
4756 # Add to function cache
4757 $mw = MagicWord::get( $id );
4758 if ( !$mw )
4759 throw new MWException( __METHOD__.'() expecting a magic word identifier.' );
4760
4761 $synonyms = $mw->getSynonyms();
4762 $sensitive = intval( $mw->isCaseSensitive() );
4763
4764 foreach ( $synonyms as $syn ) {
4765 # Case
4766 if ( !$sensitive ) {
4767 $syn = $wgContLang->lc( $syn );
4768 }
4769 # Add leading hash
4770 if ( !( $flags & SFH_NO_HASH ) ) {
4771 $syn = '#' . $syn;
4772 }
4773 # Remove trailing colon
4774 if ( substr( $syn, -1, 1 ) === ':' ) {
4775 $syn = substr( $syn, 0, -1 );
4776 }
4777 $this->mFunctionSynonyms[$sensitive][$syn] = $id;
4778 }
4779 return $oldVal;
4780 }
4781
4782 /**
4783 * Get all registered function hook identifiers
4784 *
4785 * @return Array
4786 */
4787 function getFunctionHooks() {
4788 return array_keys( $this->mFunctionHooks );
4789 }
4790
4791 /**
4792 * Create a tag function, e.g. "<test>some stuff</test>".
4793 * Unlike tag hooks, tag functions are parsed at preprocessor level.
4794 * Unlike parser functions, their content is not preprocessed.
4795 * @return null
4796 */
4797 function setFunctionTagHook( $tag, $callback, $flags ) {
4798 $tag = strtolower( $tag );
4799 if ( preg_match( '/[<>\r\n]/', $tag, $m ) ) throw new MWException( "Invalid character {$m[0]} in setFunctionTagHook('$tag', ...) call" );
4800 $old = isset( $this->mFunctionTagHooks[$tag] ) ?
4801 $this->mFunctionTagHooks[$tag] : null;
4802 $this->mFunctionTagHooks[$tag] = array( $callback, $flags );
4803
4804 if ( !in_array( $tag, $this->mStripList ) ) {
4805 $this->mStripList[] = $tag;
4806 }
4807
4808 return $old;
4809 }
4810
4811 /**
4812 * @todo FIXME: Update documentation. makeLinkObj() is deprecated.
4813 * Replace "<!--LINK-->" link placeholders with actual links, in the buffer
4814 * Placeholders created in Skin::makeLinkObj()
4815 *
4816 * @param $text string
4817 * @param $options int
4818 *
4819 * @return array of link CSS classes, indexed by PDBK.
4820 */
4821 function replaceLinkHolders( &$text, $options = 0 ) {
4822 return $this->mLinkHolders->replace( $text );
4823 }
4824
4825 /**
4826 * Replace "<!--LINK-->" link placeholders with plain text of links
4827 * (not HTML-formatted).
4828 *
4829 * @param $text String
4830 * @return String
4831 */
4832 function replaceLinkHoldersText( $text ) {
4833 return $this->mLinkHolders->replaceText( $text );
4834 }
4835
4836 /**
4837 * Renders an image gallery from a text with one line per image.
4838 * text labels may be given by using |-style alternative text. E.g.
4839 * Image:one.jpg|The number "1"
4840 * Image:tree.jpg|A tree
4841 * given as text will return the HTML of a gallery with two images,
4842 * labeled 'The number "1"' and
4843 * 'A tree'.
4844 *
4845 * @param string $text
4846 * @param array $params
4847 * @return string HTML
4848 */
4849 function renderImageGallery( $text, $params ) {
4850 $ig = new ImageGallery();
4851 $ig->setContextTitle( $this->mTitle );
4852 $ig->setShowBytes( false );
4853 $ig->setShowFilename( false );
4854 $ig->setParser( $this );
4855 $ig->setHideBadImages();
4856 $ig->setAttributes( Sanitizer::validateTagAttributes( $params, 'table' ) );
4857
4858 if ( isset( $params['showfilename'] ) ) {
4859 $ig->setShowFilename( true );
4860 } else {
4861 $ig->setShowFilename( false );
4862 }
4863 if ( isset( $params['caption'] ) ) {
4864 $caption = $params['caption'];
4865 $caption = htmlspecialchars( $caption );
4866 $caption = $this->replaceInternalLinks( $caption );
4867 $ig->setCaptionHtml( $caption );
4868 }
4869 if ( isset( $params['perrow'] ) ) {
4870 $ig->setPerRow( $params['perrow'] );
4871 }
4872 if ( isset( $params['widths'] ) ) {
4873 $ig->setWidths( $params['widths'] );
4874 }
4875 if ( isset( $params['heights'] ) ) {
4876 $ig->setHeights( $params['heights'] );
4877 }
4878
4879 wfRunHooks( 'BeforeParserrenderImageGallery', array( &$this, &$ig ) );
4880
4881 $lines = StringUtils::explode( "\n", $text );
4882 foreach ( $lines as $line ) {
4883 # match lines like these:
4884 # Image:someimage.jpg|This is some image
4885 $matches = array();
4886 preg_match( "/^([^|]+)(\\|(.*))?$/", $line, $matches );
4887 # Skip empty lines
4888 if ( count( $matches ) == 0 ) {
4889 continue;
4890 }
4891
4892 if ( strpos( $matches[0], '%' ) !== false ) {
4893 $matches[1] = rawurldecode( $matches[1] );
4894 }
4895 $title = Title::newFromText( $matches[1], NS_FILE );
4896 if ( is_null( $title ) ) {
4897 # Bogus title. Ignore these so we don't bomb out later.
4898 continue;
4899 }
4900
4901 $label = '';
4902 $alt = '';
4903 $link = '';
4904 if ( isset( $matches[3] ) ) {
4905 // look for an |alt= definition while trying not to break existing
4906 // captions with multiple pipes (|) in it, until a more sensible grammar
4907 // is defined for images in galleries
4908
4909 $matches[3] = $this->recursiveTagParse( trim( $matches[3] ) );
4910 $parameterMatches = StringUtils::explode('|', $matches[3]);
4911 $magicWordAlt = MagicWord::get( 'img_alt' );
4912 $magicWordLink = MagicWord::get( 'img_link' );
4913
4914 foreach ( $parameterMatches as $parameterMatch ) {
4915 if ( $match = $magicWordAlt->matchVariableStartToEnd( $parameterMatch ) ) {
4916 $alt = $this->stripAltText( $match, false );
4917 }
4918 elseif( $match = $magicWordLink->matchVariableStartToEnd( $parameterMatch ) ){
4919 $link = strip_tags($this->replaceLinkHoldersText($match));
4920 $chars = self::EXT_LINK_URL_CLASS;
4921 $prots = $this->mUrlProtocols;
4922 //check to see if link matches an absolute url, if not then it must be a wiki link.
4923 if(!preg_match( "/^($prots)$chars+$/u", $link)){
4924 $localLinkTitle = Title::newFromText($link);
4925 $link = $localLinkTitle->getLocalURL();
4926 }
4927 }
4928 else {
4929 // concatenate all other pipes
4930 $label .= '|' . $parameterMatch;
4931 }
4932 }
4933 // remove the first pipe
4934 $label = substr( $label, 1 );
4935 }
4936
4937 $ig->add( $title, $label, $alt ,$link);
4938 }
4939 return $ig->toHTML();
4940 }
4941
4942 /**
4943 * @param $handler
4944 * @return array
4945 */
4946 function getImageParams( $handler ) {
4947 if ( $handler ) {
4948 $handlerClass = get_class( $handler );
4949 } else {
4950 $handlerClass = '';
4951 }
4952 if ( !isset( $this->mImageParams[$handlerClass] ) ) {
4953 # Initialise static lists
4954 static $internalParamNames = array(
4955 'horizAlign' => array( 'left', 'right', 'center', 'none' ),
4956 'vertAlign' => array( 'baseline', 'sub', 'super', 'top', 'text-top', 'middle',
4957 'bottom', 'text-bottom' ),
4958 'frame' => array( 'thumbnail', 'manualthumb', 'framed', 'frameless',
4959 'upright', 'border', 'link', 'alt' ),
4960 );
4961 static $internalParamMap;
4962 if ( !$internalParamMap ) {
4963 $internalParamMap = array();
4964 foreach ( $internalParamNames as $type => $names ) {
4965 foreach ( $names as $name ) {
4966 $magicName = str_replace( '-', '_', "img_$name" );
4967 $internalParamMap[$magicName] = array( $type, $name );
4968 }
4969 }
4970 }
4971
4972 # Add handler params
4973 $paramMap = $internalParamMap;
4974 if ( $handler ) {
4975 $handlerParamMap = $handler->getParamMap();
4976 foreach ( $handlerParamMap as $magic => $paramName ) {
4977 $paramMap[$magic] = array( 'handler', $paramName );
4978 }
4979 }
4980 $this->mImageParams[$handlerClass] = $paramMap;
4981 $this->mImageParamsMagicArray[$handlerClass] = new MagicWordArray( array_keys( $paramMap ) );
4982 }
4983 return array( $this->mImageParams[$handlerClass], $this->mImageParamsMagicArray[$handlerClass] );
4984 }
4985
4986 /**
4987 * Parse image options text and use it to make an image
4988 *
4989 * @param $title Title
4990 * @param $options String
4991 * @param $holders LinkHolderArray|bool
4992 * @return string HTML
4993 */
4994 function makeImage( $title, $options, $holders = false ) {
4995 # Check if the options text is of the form "options|alt text"
4996 # Options are:
4997 # * thumbnail make a thumbnail with enlarge-icon and caption, alignment depends on lang
4998 # * left no resizing, just left align. label is used for alt= only
4999 # * right same, but right aligned
5000 # * none same, but not aligned
5001 # * ___px scale to ___ pixels width, no aligning. e.g. use in taxobox
5002 # * center center the image
5003 # * frame Keep original image size, no magnify-button.
5004 # * framed Same as "frame"
5005 # * frameless like 'thumb' but without a frame. Keeps user preferences for width
5006 # * upright reduce width for upright images, rounded to full __0 px
5007 # * border draw a 1px border around the image
5008 # * alt Text for HTML alt attribute (defaults to empty)
5009 # * link Set the target of the image link. Can be external, interwiki, or local
5010 # vertical-align values (no % or length right now):
5011 # * baseline
5012 # * sub
5013 # * super
5014 # * top
5015 # * text-top
5016 # * middle
5017 # * bottom
5018 # * text-bottom
5019
5020 $parts = StringUtils::explode( "|", $options );
5021
5022 # Give extensions a chance to select the file revision for us
5023 $options = array();
5024 $descQuery = false;
5025 wfRunHooks( 'BeforeParserFetchFileAndTitle',
5026 array( $this, $title, &$options, &$descQuery ) );
5027 # Fetch and register the file (file title may be different via hooks)
5028 list( $file, $title ) = $this->fetchFileAndTitle( $title, $options );
5029
5030 # Get parameter map
5031 $handler = $file ? $file->getHandler() : false;
5032
5033 list( $paramMap, $mwArray ) = $this->getImageParams( $handler );
5034
5035 if ( !$file ) {
5036 $this->addTrackingCategory( 'broken-file-category' );
5037 }
5038
5039 # Process the input parameters
5040 $caption = '';
5041 $params = array( 'frame' => array(), 'handler' => array(),
5042 'horizAlign' => array(), 'vertAlign' => array() );
5043 foreach ( $parts as $part ) {
5044 $part = trim( $part );
5045 list( $magicName, $value ) = $mwArray->matchVariableStartToEnd( $part );
5046 $validated = false;
5047 if ( isset( $paramMap[$magicName] ) ) {
5048 list( $type, $paramName ) = $paramMap[$magicName];
5049
5050 # Special case; width and height come in one variable together
5051 if ( $type === 'handler' && $paramName === 'width' ) {
5052 $m = array();
5053 # (bug 13500) In both cases (width/height and width only),
5054 # permit trailing "px" for backward compatibility.
5055 if ( preg_match( '/^([0-9]*)x([0-9]*)\s*(?:px)?\s*$/', $value, $m ) ) {
5056 $width = intval( $m[1] );
5057 $height = intval( $m[2] );
5058 if ( $handler->validateParam( 'width', $width ) ) {
5059 $params[$type]['width'] = $width;
5060 $validated = true;
5061 }
5062 if ( $handler->validateParam( 'height', $height ) ) {
5063 $params[$type]['height'] = $height;
5064 $validated = true;
5065 }
5066 } elseif ( preg_match( '/^[0-9]*\s*(?:px)?\s*$/', $value ) ) {
5067 $width = intval( $value );
5068 if ( $handler->validateParam( 'width', $width ) ) {
5069 $params[$type]['width'] = $width;
5070 $validated = true;
5071 }
5072 } # else no validation -- bug 13436
5073 } else {
5074 if ( $type === 'handler' ) {
5075 # Validate handler parameter
5076 $validated = $handler->validateParam( $paramName, $value );
5077 } else {
5078 # Validate internal parameters
5079 switch( $paramName ) {
5080 case 'manualthumb':
5081 case 'alt':
5082 # @todo FIXME: Possibly check validity here for
5083 # manualthumb? downstream behavior seems odd with
5084 # missing manual thumbs.
5085 $validated = true;
5086 $value = $this->stripAltText( $value, $holders );
5087 break;
5088 case 'link':
5089 $chars = self::EXT_LINK_URL_CLASS;
5090 $prots = $this->mUrlProtocols;
5091 if ( $value === '' ) {
5092 $paramName = 'no-link';
5093 $value = true;
5094 $validated = true;
5095 } elseif ( preg_match( "/^$prots/", $value ) ) {
5096 if ( preg_match( "/^($prots)$chars+$/u", $value, $m ) ) {
5097 $paramName = 'link-url';
5098 $this->mOutput->addExternalLink( $value );
5099 if ( $this->mOptions->getExternalLinkTarget() ) {
5100 $params[$type]['link-target'] = $this->mOptions->getExternalLinkTarget();
5101 }
5102 $validated = true;
5103 }
5104 } else {
5105 $linkTitle = Title::newFromText( $value );
5106 if ( $linkTitle ) {
5107 $paramName = 'link-title';
5108 $value = $linkTitle;
5109 $this->mOutput->addLink( $linkTitle );
5110 $validated = true;
5111 }
5112 }
5113 break;
5114 default:
5115 # Most other things appear to be empty or numeric...
5116 $validated = ( $value === false || is_numeric( trim( $value ) ) );
5117 }
5118 }
5119
5120 if ( $validated ) {
5121 $params[$type][$paramName] = $value;
5122 }
5123 }
5124 }
5125 if ( !$validated ) {
5126 $caption = $part;
5127 }
5128 }
5129
5130 # Process alignment parameters
5131 if ( $params['horizAlign'] ) {
5132 $params['frame']['align'] = key( $params['horizAlign'] );
5133 }
5134 if ( $params['vertAlign'] ) {
5135 $params['frame']['valign'] = key( $params['vertAlign'] );
5136 }
5137
5138 $params['frame']['caption'] = $caption;
5139
5140 # Will the image be presented in a frame, with the caption below?
5141 $imageIsFramed = isset( $params['frame']['frame'] ) ||
5142 isset( $params['frame']['framed'] ) ||
5143 isset( $params['frame']['thumbnail'] ) ||
5144 isset( $params['frame']['manualthumb'] );
5145
5146 # In the old days, [[Image:Foo|text...]] would set alt text. Later it
5147 # came to also set the caption, ordinary text after the image -- which
5148 # makes no sense, because that just repeats the text multiple times in
5149 # screen readers. It *also* came to set the title attribute.
5150 #
5151 # Now that we have an alt attribute, we should not set the alt text to
5152 # equal the caption: that's worse than useless, it just repeats the
5153 # text. This is the framed/thumbnail case. If there's no caption, we
5154 # use the unnamed parameter for alt text as well, just for the time be-
5155 # ing, if the unnamed param is set and the alt param is not.
5156 #
5157 # For the future, we need to figure out if we want to tweak this more,
5158 # e.g., introducing a title= parameter for the title; ignoring the un-
5159 # named parameter entirely for images without a caption; adding an ex-
5160 # plicit caption= parameter and preserving the old magic unnamed para-
5161 # meter for BC; ...
5162 if ( $imageIsFramed ) { # Framed image
5163 if ( $caption === '' && !isset( $params['frame']['alt'] ) ) {
5164 # No caption or alt text, add the filename as the alt text so
5165 # that screen readers at least get some description of the image
5166 $params['frame']['alt'] = $title->getText();
5167 }
5168 # Do not set $params['frame']['title'] because tooltips don't make sense
5169 # for framed images
5170 } else { # Inline image
5171 if ( !isset( $params['frame']['alt'] ) ) {
5172 # No alt text, use the "caption" for the alt text
5173 if ( $caption !== '') {
5174 $params['frame']['alt'] = $this->stripAltText( $caption, $holders );
5175 } else {
5176 # No caption, fall back to using the filename for the
5177 # alt text
5178 $params['frame']['alt'] = $title->getText();
5179 }
5180 }
5181 # Use the "caption" for the tooltip text
5182 $params['frame']['title'] = $this->stripAltText( $caption, $holders );
5183 }
5184
5185 wfRunHooks( 'ParserMakeImageParams', array( $title, $file, &$params, $this ) );
5186
5187 # Linker does the rest
5188 $time = isset( $options['time'] ) ? $options['time'] : false;
5189 $ret = Linker::makeImageLink2( $title, $file, $params['frame'], $params['handler'],
5190 $time, $descQuery, $this->mOptions->getThumbSize() );
5191
5192 # Give the handler a chance to modify the parser object
5193 if ( $handler ) {
5194 $handler->parserTransformHook( $this, $file );
5195 }
5196
5197 return $ret;
5198 }
5199
5200 /**
5201 * @param $caption
5202 * @param $holders LinkHolderArray
5203 * @return mixed|String
5204 */
5205 protected function stripAltText( $caption, $holders ) {
5206 # Strip bad stuff out of the title (tooltip). We can't just use
5207 # replaceLinkHoldersText() here, because if this function is called
5208 # from replaceInternalLinks2(), mLinkHolders won't be up-to-date.
5209 if ( $holders ) {
5210 $tooltip = $holders->replaceText( $caption );
5211 } else {
5212 $tooltip = $this->replaceLinkHoldersText( $caption );
5213 }
5214
5215 # make sure there are no placeholders in thumbnail attributes
5216 # that are later expanded to html- so expand them now and
5217 # remove the tags
5218 $tooltip = $this->mStripState->unstripBoth( $tooltip );
5219 $tooltip = Sanitizer::stripAllTags( $tooltip );
5220
5221 return $tooltip;
5222 }
5223
5224 /**
5225 * Set a flag in the output object indicating that the content is dynamic and
5226 * shouldn't be cached.
5227 */
5228 function disableCache() {
5229 wfDebug( "Parser output marked as uncacheable.\n" );
5230 if ( !$this->mOutput ) {
5231 throw new MWException( __METHOD__ .
5232 " can only be called when actually parsing something" );
5233 }
5234 $this->mOutput->setCacheTime( -1 ); // old style, for compatibility
5235 $this->mOutput->updateCacheExpiry( 0 ); // new style, for consistency
5236 }
5237
5238 /**
5239 * Callback from the Sanitizer for expanding items found in HTML attribute
5240 * values, so they can be safely tested and escaped.
5241 *
5242 * @param $text String
5243 * @param $frame PPFrame
5244 * @return String
5245 */
5246 function attributeStripCallback( &$text, $frame = false ) {
5247 $text = $this->replaceVariables( $text, $frame );
5248 $text = $this->mStripState->unstripBoth( $text );
5249 return $text;
5250 }
5251
5252 /**
5253 * Accessor
5254 *
5255 * @return array
5256 */
5257 function getTags() {
5258 return array_merge( array_keys( $this->mTransparentTagHooks ), array_keys( $this->mTagHooks ), array_keys( $this->mFunctionTagHooks ) );
5259 }
5260
5261 /**
5262 * Replace transparent tags in $text with the values given by the callbacks.
5263 *
5264 * Transparent tag hooks are like regular XML-style tag hooks, except they
5265 * operate late in the transformation sequence, on HTML instead of wikitext.
5266 *
5267 * @param $text string
5268 *
5269 * @return string
5270 */
5271 function replaceTransparentTags( $text ) {
5272 $matches = array();
5273 $elements = array_keys( $this->mTransparentTagHooks );
5274 $text = self::extractTagsAndParams( $elements, $text, $matches, $this->mUniqPrefix );
5275 $replacements = array();
5276
5277 foreach ( $matches as $marker => $data ) {
5278 list( $element, $content, $params, $tag ) = $data;
5279 $tagName = strtolower( $element );
5280 if ( isset( $this->mTransparentTagHooks[$tagName] ) ) {
5281 $output = call_user_func_array( $this->mTransparentTagHooks[$tagName], array( $content, $params, $this ) );
5282 } else {
5283 $output = $tag;
5284 }
5285 $replacements[$marker] = $output;
5286 }
5287 return strtr( $text, $replacements );
5288 }
5289
5290 /**
5291 * Break wikitext input into sections, and either pull or replace
5292 * some particular section's text.
5293 *
5294 * External callers should use the getSection and replaceSection methods.
5295 *
5296 * @param $text String: Page wikitext
5297 * @param $section String: a section identifier string of the form:
5298 * "<flag1> - <flag2> - ... - <section number>"
5299 *
5300 * Currently the only recognised flag is "T", which means the target section number
5301 * was derived during a template inclusion parse, in other words this is a template
5302 * section edit link. If no flags are given, it was an ordinary section edit link.
5303 * This flag is required to avoid a section numbering mismatch when a section is
5304 * enclosed by "<includeonly>" (bug 6563).
5305 *
5306 * The section number 0 pulls the text before the first heading; other numbers will
5307 * pull the given section along with its lower-level subsections. If the section is
5308 * not found, $mode=get will return $newtext, and $mode=replace will return $text.
5309 *
5310 * Section 0 is always considered to exist, even if it only contains the empty
5311 * string. If $text is the empty string and section 0 is replaced, $newText is
5312 * returned.
5313 *
5314 * @param $mode String: one of "get" or "replace"
5315 * @param $newText String: replacement text for section data.
5316 * @return String: for "get", the extracted section text.
5317 * for "replace", the whole page with the section replaced.
5318 */
5319 private function extractSections( $text, $section, $mode, $newText='' ) {
5320 global $wgTitle; # not generally used but removes an ugly failure mode
5321 $this->startParse( $wgTitle, new ParserOptions, self::OT_PLAIN, true );
5322 $outText = '';
5323 $frame = $this->getPreprocessor()->newFrame();
5324
5325 # Process section extraction flags
5326 $flags = 0;
5327 $sectionParts = explode( '-', $section );
5328 $sectionIndex = array_pop( $sectionParts );
5329 foreach ( $sectionParts as $part ) {
5330 if ( $part === 'T' ) {
5331 $flags |= self::PTD_FOR_INCLUSION;
5332 }
5333 }
5334
5335 # Check for empty input
5336 if ( strval( $text ) === '' ) {
5337 # Only sections 0 and T-0 exist in an empty document
5338 if ( $sectionIndex == 0 ) {
5339 if ( $mode === 'get' ) {
5340 return '';
5341 } else {
5342 return $newText;
5343 }
5344 } else {
5345 if ( $mode === 'get' ) {
5346 return $newText;
5347 } else {
5348 return $text;
5349 }
5350 }
5351 }
5352
5353 # Preprocess the text
5354 $root = $this->preprocessToDom( $text, $flags );
5355
5356 # <h> nodes indicate section breaks
5357 # They can only occur at the top level, so we can find them by iterating the root's children
5358 $node = $root->getFirstChild();
5359
5360 # Find the target section
5361 if ( $sectionIndex == 0 ) {
5362 # Section zero doesn't nest, level=big
5363 $targetLevel = 1000;
5364 } else {
5365 while ( $node ) {
5366 if ( $node->getName() === 'h' ) {
5367 $bits = $node->splitHeading();
5368 if ( $bits['i'] == $sectionIndex ) {
5369 $targetLevel = $bits['level'];
5370 break;
5371 }
5372 }
5373 if ( $mode === 'replace' ) {
5374 $outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
5375 }
5376 $node = $node->getNextSibling();
5377 }
5378 }
5379
5380 if ( !$node ) {
5381 # Not found
5382 if ( $mode === 'get' ) {
5383 return $newText;
5384 } else {
5385 return $text;
5386 }
5387 }
5388
5389 # Find the end of the section, including nested sections
5390 do {
5391 if ( $node->getName() === 'h' ) {
5392 $bits = $node->splitHeading();
5393 $curLevel = $bits['level'];
5394 if ( $bits['i'] != $sectionIndex && $curLevel <= $targetLevel ) {
5395 break;
5396 }
5397 }
5398 if ( $mode === 'get' ) {
5399 $outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
5400 }
5401 $node = $node->getNextSibling();
5402 } while ( $node );
5403
5404 # Write out the remainder (in replace mode only)
5405 if ( $mode === 'replace' ) {
5406 # Output the replacement text
5407 # Add two newlines on -- trailing whitespace in $newText is conventionally
5408 # stripped by the editor, so we need both newlines to restore the paragraph gap
5409 # Only add trailing whitespace if there is newText
5410 if ( $newText != "" ) {
5411 $outText .= $newText . "\n\n";
5412 }
5413
5414 while ( $node ) {
5415 $outText .= $frame->expand( $node, PPFrame::RECOVER_ORIG );
5416 $node = $node->getNextSibling();
5417 }
5418 }
5419
5420 if ( is_string( $outText ) ) {
5421 # Re-insert stripped tags
5422 $outText = rtrim( $this->mStripState->unstripBoth( $outText ) );
5423 }
5424
5425 return $outText;
5426 }
5427
5428 /**
5429 * This function returns the text of a section, specified by a number ($section).
5430 * A section is text under a heading like == Heading == or \<h1\>Heading\</h1\>, or
5431 * the first section before any such heading (section 0).
5432 *
5433 * If a section contains subsections, these are also returned.
5434 *
5435 * @param $text String: text to look in
5436 * @param $section String: section identifier
5437 * @param $deftext String: default to return if section is not found
5438 * @return string text of the requested section
5439 */
5440 public function getSection( $text, $section, $deftext='' ) {
5441 return $this->extractSections( $text, $section, "get", $deftext );
5442 }
5443
5444 /**
5445 * This function returns $oldtext after the content of the section
5446 * specified by $section has been replaced with $text. If the target
5447 * section does not exist, $oldtext is returned unchanged.
5448 *
5449 * @param $oldtext String: former text of the article
5450 * @param $section int section identifier
5451 * @param $text String: replacing text
5452 * @return String: modified text
5453 */
5454 public function replaceSection( $oldtext, $section, $text ) {
5455 return $this->extractSections( $oldtext, $section, "replace", $text );
5456 }
5457
5458 /**
5459 * Get the ID of the revision we are parsing
5460 *
5461 * @return Mixed: integer or null
5462 */
5463 function getRevisionId() {
5464 return $this->mRevisionId;
5465 }
5466
5467 /**
5468 * Get the revision object for $this->mRevisionId
5469 *
5470 * @return Revision|null either a Revision object or null
5471 */
5472 protected function getRevisionObject() {
5473 if ( !is_null( $this->mRevisionObject ) ) {
5474 return $this->mRevisionObject;
5475 }
5476 if ( is_null( $this->mRevisionId ) ) {
5477 return null;
5478 }
5479
5480 $this->mRevisionObject = Revision::newFromId( $this->mRevisionId );
5481 return $this->mRevisionObject;
5482 }
5483
5484 /**
5485 * Get the timestamp associated with the current revision, adjusted for
5486 * the default server-local timestamp
5487 */
5488 function getRevisionTimestamp() {
5489 if ( is_null( $this->mRevisionTimestamp ) ) {
5490 wfProfileIn( __METHOD__ );
5491
5492 global $wgContLang;
5493
5494 $revObject = $this->getRevisionObject();
5495 $timestamp = $revObject ? $revObject->getTimestamp() : wfTimestampNow();
5496
5497 # The cryptic '' timezone parameter tells to use the site-default
5498 # timezone offset instead of the user settings.
5499 #
5500 # Since this value will be saved into the parser cache, served
5501 # to other users, and potentially even used inside links and such,
5502 # it needs to be consistent for all visitors.
5503 $this->mRevisionTimestamp = $wgContLang->userAdjust( $timestamp, '' );
5504
5505 wfProfileOut( __METHOD__ );
5506 }
5507 return $this->mRevisionTimestamp;
5508 }
5509
5510 /**
5511 * Get the name of the user that edited the last revision
5512 *
5513 * @return String: user name
5514 */
5515 function getRevisionUser() {
5516 if( is_null( $this->mRevisionUser ) ) {
5517 $revObject = $this->getRevisionObject();
5518
5519 # if this template is subst: the revision id will be blank,
5520 # so just use the current user's name
5521 if( $revObject ) {
5522 $this->mRevisionUser = $revObject->getUserText();
5523 } elseif( $this->ot['wiki'] || $this->mOptions->getIsPreview() ) {
5524 $this->mRevisionUser = $this->getUser()->getName();
5525 }
5526 }
5527 return $this->mRevisionUser;
5528 }
5529
5530 /**
5531 * Mutator for $mDefaultSort
5532 *
5533 * @param $sort string New value
5534 */
5535 public function setDefaultSort( $sort ) {
5536 $this->mDefaultSort = $sort;
5537 $this->mOutput->setProperty( 'defaultsort', $sort );
5538 }
5539
5540 /**
5541 * Accessor for $mDefaultSort
5542 * Will use the empty string if none is set.
5543 *
5544 * This value is treated as a prefix, so the
5545 * empty string is equivalent to sorting by
5546 * page name.
5547 *
5548 * @return string
5549 */
5550 public function getDefaultSort() {
5551 if ( $this->mDefaultSort !== false ) {
5552 return $this->mDefaultSort;
5553 } else {
5554 return '';
5555 }
5556 }
5557
5558 /**
5559 * Accessor for $mDefaultSort
5560 * Unlike getDefaultSort(), will return false if none is set
5561 *
5562 * @return string or false
5563 */
5564 public function getCustomDefaultSort() {
5565 return $this->mDefaultSort;
5566 }
5567
5568 /**
5569 * Try to guess the section anchor name based on a wikitext fragment
5570 * presumably extracted from a heading, for example "Header" from
5571 * "== Header ==".
5572 *
5573 * @param $text string
5574 *
5575 * @return string
5576 */
5577 public function guessSectionNameFromWikiText( $text ) {
5578 # Strip out wikitext links(they break the anchor)
5579 $text = $this->stripSectionName( $text );
5580 $text = Sanitizer::normalizeSectionNameWhitespace( $text );
5581 return '#' . Sanitizer::escapeId( $text, 'noninitial' );
5582 }
5583
5584 /**
5585 * Same as guessSectionNameFromWikiText(), but produces legacy anchors
5586 * instead. For use in redirects, since IE6 interprets Redirect: headers
5587 * as something other than UTF-8 (apparently?), resulting in breakage.
5588 *
5589 * @param $text String: The section name
5590 * @return string An anchor
5591 */
5592 public function guessLegacySectionNameFromWikiText( $text ) {
5593 # Strip out wikitext links(they break the anchor)
5594 $text = $this->stripSectionName( $text );
5595 $text = Sanitizer::normalizeSectionNameWhitespace( $text );
5596 return '#' . Sanitizer::escapeId( $text, array( 'noninitial', 'legacy' ) );
5597 }
5598
5599 /**
5600 * Strips a text string of wikitext for use in a section anchor
5601 *
5602 * Accepts a text string and then removes all wikitext from the
5603 * string and leaves only the resultant text (i.e. the result of
5604 * [[User:WikiSysop|Sysop]] would be "Sysop" and the result of
5605 * [[User:WikiSysop]] would be "User:WikiSysop") - this is intended
5606 * to create valid section anchors by mimicing the output of the
5607 * parser when headings are parsed.
5608 *
5609 * @param $text String: text string to be stripped of wikitext
5610 * for use in a Section anchor
5611 * @return string Filtered text string
5612 */
5613 public function stripSectionName( $text ) {
5614 # Strip internal link markup
5615 $text = preg_replace( '/\[\[:?([^[|]+)\|([^[]+)\]\]/', '$2', $text );
5616 $text = preg_replace( '/\[\[:?([^[]+)\|?\]\]/', '$1', $text );
5617
5618 # Strip external link markup
5619 # @todo FIXME: Not tolerant to blank link text
5620 # I.E. [http://www.mediawiki.org] will render as [1] or something depending
5621 # on how many empty links there are on the page - need to figure that out.
5622 $text = preg_replace( '/\[(?:' . $this->mUrlProtocols . ')([^ ]+?) ([^[]+)\]/', '$2', $text );
5623
5624 # Parse wikitext quotes (italics & bold)
5625 $text = $this->doQuotes( $text );
5626
5627 # Strip HTML tags
5628 $text = StringUtils::delimiterReplace( '<', '>', '', $text );
5629 return $text;
5630 }
5631
5632 /**
5633 * strip/replaceVariables/unstrip for preprocessor regression testing
5634 *
5635 * @param $text string
5636 * @param $title Title
5637 * @param $options ParserOptions
5638 * @param $outputType int
5639 *
5640 * @return string
5641 */
5642 function testSrvus( $text, Title $title, ParserOptions $options, $outputType = self::OT_HTML ) {
5643 $this->startParse( $title, $options, $outputType, true );
5644
5645 $text = $this->replaceVariables( $text );
5646 $text = $this->mStripState->unstripBoth( $text );
5647 $text = Sanitizer::removeHTMLtags( $text );
5648 return $text;
5649 }
5650
5651 /**
5652 * @param $text string
5653 * @param $title Title
5654 * @param $options ParserOptions
5655 * @return string
5656 */
5657 function testPst( $text, Title $title, ParserOptions $options ) {
5658 return $this->preSaveTransform( $text, $title, $options->getUser(), $options );
5659 }
5660
5661 /**
5662 * @param $text
5663 * @param $title Title
5664 * @param $options ParserOptions
5665 * @return string
5666 */
5667 function testPreprocess( $text, Title $title, ParserOptions $options ) {
5668 return $this->testSrvus( $text, $title, $options, self::OT_PREPROCESS );
5669 }
5670
5671 /**
5672 * Call a callback function on all regions of the given text that are not
5673 * inside strip markers, and replace those regions with the return value
5674 * of the callback. For example, with input:
5675 *
5676 * aaa<MARKER>bbb
5677 *
5678 * This will call the callback function twice, with 'aaa' and 'bbb'. Those
5679 * two strings will be replaced with the value returned by the callback in
5680 * each case.
5681 *
5682 * @param $s string
5683 * @param $callback
5684 *
5685 * @return string
5686 */
5687 function markerSkipCallback( $s, $callback ) {
5688 $i = 0;
5689 $out = '';
5690 while ( $i < strlen( $s ) ) {
5691 $markerStart = strpos( $s, $this->mUniqPrefix, $i );
5692 if ( $markerStart === false ) {
5693 $out .= call_user_func( $callback, substr( $s, $i ) );
5694 break;
5695 } else {
5696 $out .= call_user_func( $callback, substr( $s, $i, $markerStart - $i ) );
5697 $markerEnd = strpos( $s, self::MARKER_SUFFIX, $markerStart );
5698 if ( $markerEnd === false ) {
5699 $out .= substr( $s, $markerStart );
5700 break;
5701 } else {
5702 $markerEnd += strlen( self::MARKER_SUFFIX );
5703 $out .= substr( $s, $markerStart, $markerEnd - $markerStart );
5704 $i = $markerEnd;
5705 }
5706 }
5707 }
5708 return $out;
5709 }
5710
5711 /**
5712 * Remove any strip markers found in the given text.
5713 *
5714 * @param $text Input string
5715 * @return string
5716 */
5717 function killMarkers( $text ) {
5718 return $this->mStripState->killMarkers( $text );
5719 }
5720
5721 /**
5722 * Save the parser state required to convert the given half-parsed text to
5723 * HTML. "Half-parsed" in this context means the output of
5724 * recursiveTagParse() or internalParse(). This output has strip markers
5725 * from replaceVariables (extensionSubstitution() etc.), and link
5726 * placeholders from replaceLinkHolders().
5727 *
5728 * Returns an array which can be serialized and stored persistently. This
5729 * array can later be loaded into another parser instance with
5730 * unserializeHalfParsedText(). The text can then be safely incorporated into
5731 * the return value of a parser hook.
5732 *
5733 * @param $text string
5734 *
5735 * @return array
5736 */
5737 function serializeHalfParsedText( $text ) {
5738 wfProfileIn( __METHOD__ );
5739 $data = array(
5740 'text' => $text,
5741 'version' => self::HALF_PARSED_VERSION,
5742 'stripState' => $this->mStripState->getSubState( $text ),
5743 'linkHolders' => $this->mLinkHolders->getSubArray( $text )
5744 );
5745 wfProfileOut( __METHOD__ );
5746 return $data;
5747 }
5748
5749 /**
5750 * Load the parser state given in the $data array, which is assumed to
5751 * have been generated by serializeHalfParsedText(). The text contents is
5752 * extracted from the array, and its markers are transformed into markers
5753 * appropriate for the current Parser instance. This transformed text is
5754 * returned, and can be safely included in the return value of a parser
5755 * hook.
5756 *
5757 * If the $data array has been stored persistently, the caller should first
5758 * check whether it is still valid, by calling isValidHalfParsedText().
5759 *
5760 * @param $data array Serialized data
5761 * @return String
5762 */
5763 function unserializeHalfParsedText( $data ) {
5764 if ( !isset( $data['version'] ) || $data['version'] != self::HALF_PARSED_VERSION ) {
5765 throw new MWException( __METHOD__.': invalid version' );
5766 }
5767
5768 # First, extract the strip state.
5769 $texts = array( $data['text'] );
5770 $texts = $this->mStripState->merge( $data['stripState'], $texts );
5771
5772 # Now renumber links
5773 $texts = $this->mLinkHolders->mergeForeign( $data['linkHolders'], $texts );
5774
5775 # Should be good to go.
5776 return $texts[0];
5777 }
5778
5779 /**
5780 * Returns true if the given array, presumed to be generated by
5781 * serializeHalfParsedText(), is compatible with the current version of the
5782 * parser.
5783 *
5784 * @param $data Array
5785 *
5786 * @return bool
5787 */
5788 function isValidHalfParsedText( $data ) {
5789 return isset( $data['version'] ) && $data['version'] == self::HALF_PARSED_VERSION;
5790 }
5791 }
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