3 * Preprocessor using PHP's dom extension
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
27 // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
28 class Preprocessor_DOM
extends Preprocessor
{
37 const CACHE_PREFIX
= 'preprocess-xml';
39 public function __construct( $parser ) {
40 $this->parser
= $parser;
41 $mem = ini_get( 'memory_limit' );
42 $this->memoryLimit
= false;
43 if ( strval( $mem ) !== '' && $mem != -1 ) {
44 if ( preg_match( '/^\d+$/', $mem ) ) {
45 $this->memoryLimit
= $mem;
46 } elseif ( preg_match( '/^(\d+)M$/i', $mem, $m ) ) {
47 $this->memoryLimit
= $m[1] * 1048576;
55 public function newFrame() {
56 return new PPFrame_DOM( $this );
61 * @return PPCustomFrame_DOM
63 public function newCustomFrame( $args ) {
64 return new PPCustomFrame_DOM( $this, $args );
68 * @param array $values
72 public function newPartNodeArray( $values ) {
73 // NOTE: DOM manipulation is slower than building & parsing XML! (or so Tim sais)
76 foreach ( $values as $k => $val ) {
78 $xml .= "<part><name index=\"$k\"/><value>"
79 . htmlspecialchars( $val ) . "</value></part>";
81 $xml .= "<part><name>" . htmlspecialchars( $k )
82 . "</name>=<value>" . htmlspecialchars( $val ) . "</value></part>";
88 $dom = new DOMDocument();
89 Wikimedia\
suppressWarnings();
90 $result = $dom->loadXML( $xml );
91 Wikimedia\restoreWarnings
();
93 // Try running the XML through UtfNormal to get rid of invalid characters
94 $xml = UtfNormal\Validator
::cleanUp( $xml );
95 // 1 << 19 == XML_PARSE_HUGE, needed so newer versions of libxml2
96 // don't barf when the XML is >256 levels deep
97 $result = $dom->loadXML( $xml, 1 << 19 );
101 throw new MWException( 'Parameters passed to ' . __METHOD__
. ' result in invalid XML' );
104 $root = $dom->documentElement
;
105 $node = new PPNode_DOM( $root->childNodes
);
110 * @throws MWException
113 public function memCheck() {
114 if ( $this->memoryLimit
=== false ) {
117 $usage = memory_get_usage();
118 if ( $usage > $this->memoryLimit
* 0.9 ) {
119 $limit = intval( $this->memoryLimit
* 0.9 / 1048576 +
0.5 );
120 throw new MWException( "Preprocessor hit 90% memory limit ($limit MB)" );
122 return $usage <= $this->memoryLimit
* 0.8;
126 * Preprocess some wikitext and return the document tree.
127 * This is the ghost of Parser::replace_variables().
129 * @param string $text The text to parse
130 * @param int $flags Bitwise combination of:
131 * Parser::PTD_FOR_INCLUSION Handle "<noinclude>" and "<includeonly>"
132 * as if the text is being included. Default
133 * is to assume a direct page view.
135 * The generated DOM tree must depend only on the input text and the flags.
136 * The DOM tree must be the same in OT_HTML and OT_WIKI mode, to avoid a regression of T6899.
138 * Any flag added to the $flags parameter here, or any other parameter liable to cause a
139 * change in the DOM tree for a given text, must be passed through the section identifier
140 * in the section edit link and thus back to extractSections().
142 * The output of this function is currently only cached in process memory, but a persistent
143 * cache may be implemented at a later date which takes further advantage of these strict
144 * dependency requirements.
146 * @throws MWException
149 public function preprocessToObj( $text, $flags = 0 ) {
150 $xml = $this->cacheGetTree( $text, $flags );
151 if ( $xml === false ) {
152 $xml = $this->preprocessToXml( $text, $flags );
153 $this->cacheSetTree( $text, $flags, $xml );
156 // Fail if the number of elements exceeds acceptable limits
157 // Do not attempt to generate the DOM
158 $this->parser
->mGeneratedPPNodeCount +
= substr_count( $xml, '<' );
159 $max = $this->parser
->mOptions
->getMaxGeneratedPPNodeCount();
160 if ( $this->parser
->mGeneratedPPNodeCount
> $max ) {
161 // if ( $cacheable ) { ... }
162 throw new MWException( __METHOD__
. ': generated node count limit exceeded' );
165 $dom = new DOMDocument
;
166 Wikimedia\
suppressWarnings();
167 $result = $dom->loadXML( $xml );
168 Wikimedia\restoreWarnings
();
170 // Try running the XML through UtfNormal to get rid of invalid characters
171 $xml = UtfNormal\Validator
::cleanUp( $xml );
172 // 1 << 19 == XML_PARSE_HUGE, needed so newer versions of libxml2
173 // don't barf when the XML is >256 levels deep.
174 $result = $dom->loadXML( $xml, 1 << 19 );
177 $obj = new PPNode_DOM( $dom->documentElement
);
180 // if ( $cacheable ) { ... }
183 throw new MWException( __METHOD__
. ' generated invalid XML' );
189 * @param string $text
193 public function preprocessToXml( $text, $flags = 0 ) {
194 global $wgDisableLangConversion;
196 $forInclusion = $flags & Parser
::PTD_FOR_INCLUSION
;
198 $xmlishElements = $this->parser
->getStripList();
199 $xmlishAllowMissingEndTag = [ 'includeonly', 'noinclude', 'onlyinclude' ];
200 $enableOnlyinclude = false;
201 if ( $forInclusion ) {
202 $ignoredTags = [ 'includeonly', '/includeonly' ];
203 $ignoredElements = [ 'noinclude' ];
204 $xmlishElements[] = 'noinclude';
205 if ( strpos( $text, '<onlyinclude>' ) !== false
206 && strpos( $text, '</onlyinclude>' ) !== false
208 $enableOnlyinclude = true;
211 $ignoredTags = [ 'noinclude', '/noinclude', 'onlyinclude', '/onlyinclude' ];
212 $ignoredElements = [ 'includeonly' ];
213 $xmlishElements[] = 'includeonly';
215 $xmlishRegex = implode( '|', array_merge( $xmlishElements, $ignoredTags ) );
217 // Use "A" modifier (anchored) instead of "^", because ^ doesn't work with an offset
218 $elementsRegex = "~($xmlishRegex)(?:\s|\/>|>)|(!--)~iA";
220 $stack = new PPDStack
;
222 $searchBase = "[{<\n"; # }
223 if ( !$wgDisableLangConversion ) {
227 // For fast reverse searches
228 $revText = strrev( $text );
229 $lengthText = strlen( $text );
231 // Input pointer, starts out pointing to a pseudo-newline before the start
233 // Current accumulator
234 $accum =& $stack->getAccum();
236 // True to find equals signs in arguments
238 // True to take notice of pipe characters
241 // True if $i is inside a possible heading
243 // True if there are no more greater-than (>) signs right of $i
245 // Map of tag name => true if there are no more closing tags of given type right of $i
246 $noMoreClosingTag = [];
247 // True to ignore all input up to the next <onlyinclude>
248 $findOnlyinclude = $enableOnlyinclude;
249 // Do a line-start run without outputting an LF character
250 $fakeLineStart = true;
253 // $this->memCheck();
255 if ( $findOnlyinclude ) {
256 // Ignore all input up to the next <onlyinclude>
257 $startPos = strpos( $text, '<onlyinclude>', $i );
258 if ( $startPos === false ) {
259 // Ignored section runs to the end
260 $accum .= '<ignore>' . htmlspecialchars( substr( $text, $i ) ) . '</ignore>';
263 $tagEndPos = $startPos +
strlen( '<onlyinclude>' ); // past-the-end
264 $accum .= '<ignore>' . htmlspecialchars( substr( $text, $i, $tagEndPos - $i ) ) . '</ignore>';
266 $findOnlyinclude = false;
269 if ( $fakeLineStart ) {
270 $found = 'line-start';
273 # Find next opening brace, closing brace or pipe
274 $search = $searchBase;
275 if ( $stack->top
=== false ) {
276 $currentClosing = '';
278 $currentClosing = $stack->top
->close
;
279 $search .= $currentClosing;
285 // First equals will be for the template
289 # Output literal section, advance input counter
290 $literalLength = strcspn( $text, $search, $i );
291 if ( $literalLength > 0 ) {
292 $accum .= htmlspecialchars( substr( $text, $i, $literalLength ) );
293 $i +
= $literalLength;
295 if ( $i >= $lengthText ) {
296 if ( $currentClosing == "\n" ) {
297 // Do a past-the-end run to finish off the heading
305 $curChar = $curTwoChar = $text[$i];
306 if ( ( $i +
1 ) < $lengthText ) {
307 $curTwoChar .= $text[$i +
1];
309 if ( $curChar == '|' ) {
311 } elseif ( $curChar == '=' ) {
313 } elseif ( $curChar == '<' ) {
315 } elseif ( $curChar == "\n" ) {
319 $found = 'line-start';
321 } elseif ( $curTwoChar == $currentClosing ) {
323 $curChar = $curTwoChar;
324 } elseif ( $curChar == $currentClosing ) {
326 } elseif ( isset( $this->rules
[$curTwoChar] ) ) {
327 $curChar = $curTwoChar;
329 $rule = $this->rules
[$curChar];
330 } elseif ( isset( $this->rules
[$curChar] ) ) {
332 $rule = $this->rules
[$curChar];
334 # Some versions of PHP have a strcspn which stops on
335 # null characters; ignore these and continue.
336 # We also may get '-' and '}' characters here which
337 # don't match -{ or $currentClosing. Add these to
338 # output and continue.
339 if ( $curChar == '-' ||
$curChar == '}' ) {
348 if ( $found == 'angle' ) {
350 // Handle </onlyinclude>
351 if ( $enableOnlyinclude
352 && substr( $text, $i, strlen( '</onlyinclude>' ) ) == '</onlyinclude>'
354 $findOnlyinclude = true;
358 // Determine element name
359 if ( !preg_match( $elementsRegex, $text, $matches, 0, $i +
1 ) ) {
360 // Element name missing or not listed
366 if ( isset( $matches[2] ) && $matches[2] == '!--' ) {
367 // To avoid leaving blank lines, when a sequence of
368 // space-separated comments is both preceded and followed by
369 // a newline (ignoring spaces), then
370 // trim leading and trailing spaces and the trailing newline.
373 $endPos = strpos( $text, '-->', $i +
4 );
374 if ( $endPos === false ) {
375 // Unclosed comment in input, runs to end
376 $inner = substr( $text, $i );
377 $accum .= '<comment>' . htmlspecialchars( $inner ) . '</comment>';
380 // Search backwards for leading whitespace
381 $wsStart = $i ?
( $i - strspn( $revText, " \t", $lengthText - $i ) ) : 0;
383 // Search forwards for trailing whitespace
384 // $wsEnd will be the position of the last space (or the '>' if there's none)
385 $wsEnd = $endPos +
2 +
strspn( $text, " \t", $endPos +
3 );
387 // Keep looking forward as long as we're finding more
389 $comments = [ [ $wsStart, $wsEnd ] ];
390 while ( substr( $text, $wsEnd +
1, 4 ) == '<!--' ) {
391 $c = strpos( $text, '-->', $wsEnd +
4 );
392 if ( $c === false ) {
395 $c = $c +
2 +
strspn( $text, " \t", $c +
3 );
396 $comments[] = [ $wsEnd +
1, $c ];
400 // Eat the line if possible
401 // TODO: This could theoretically be done if $wsStart == 0, i.e. for comments at
402 // the overall start. That's not how Sanitizer::removeHTMLcomments() did it, but
403 // it's a possible beneficial b/c break.
404 if ( $wsStart > 0 && substr( $text, $wsStart - 1, 1 ) == "\n"
405 && substr( $text, $wsEnd +
1, 1 ) == "\n"
407 // Remove leading whitespace from the end of the accumulator
408 // Sanity check first though
409 $wsLength = $i - $wsStart;
411 && strspn( $accum, " \t", -$wsLength ) === $wsLength
413 $accum = substr( $accum, 0, -$wsLength );
416 // Dump all but the last comment to the accumulator
417 foreach ( $comments as $j => $com ) {
419 $endPos = $com[1] +
1;
420 if ( $j == ( count( $comments ) - 1 ) ) {
423 $inner = substr( $text, $startPos, $endPos - $startPos );
424 $accum .= '<comment>' . htmlspecialchars( $inner ) . '</comment>';
427 // Do a line-start run next time to look for headings after the comment
428 $fakeLineStart = true;
430 // No line to eat, just take the comment itself
436 $part = $stack->top
->getCurrentPart();
437 if ( !( isset( $part->commentEnd
) && $part->commentEnd
== $wsStart - 1 ) ) {
438 $part->visualEnd
= $wsStart;
440 // Else comments abutting, no change in visual end
441 $part->commentEnd
= $endPos;
444 $inner = substr( $text, $startPos, $endPos - $startPos +
1 );
445 $accum .= '<comment>' . htmlspecialchars( $inner ) . '</comment>';
450 $lowerName = strtolower( $name );
451 $attrStart = $i +
strlen( $name ) +
1;
454 $tagEndPos = $noMoreGT ?
false : strpos( $text, '>', $attrStart );
455 if ( $tagEndPos === false ) {
456 // Infinite backtrack
457 // Disable tag search to prevent worst-case O(N^2) performance
464 // Handle ignored tags
465 if ( in_array( $lowerName, $ignoredTags ) ) {
467 . htmlspecialchars( substr( $text, $i, $tagEndPos - $i +
1 ) )
474 if ( $text[$tagEndPos - 1] == '/' ) {
475 $attrEnd = $tagEndPos - 1;
480 $attrEnd = $tagEndPos;
483 !isset( $noMoreClosingTag[$name] ) &&
484 preg_match( "/<\/" . preg_quote( $name, '/' ) . "\s*>/i",
485 $text, $matches, PREG_OFFSET_CAPTURE
, $tagEndPos +
1 )
487 $inner = substr( $text, $tagEndPos +
1, $matches[0][1] - $tagEndPos - 1 );
488 $i = $matches[0][1] +
strlen( $matches[0][0] );
489 $close = '<close>' . htmlspecialchars( $matches[0][0] ) . '</close>';
492 if ( in_array( $name, $xmlishAllowMissingEndTag ) ) {
493 // Let it run out to the end of the text.
494 $inner = substr( $text, $tagEndPos +
1 );
498 // Don't match the tag, treat opening tag as literal and resume parsing.
500 $accum .= htmlspecialchars( substr( $text, $tagStartPos, $tagEndPos +
1 - $tagStartPos ) );
501 // Cache results, otherwise we have O(N^2) performance for input like <foo><foo><foo>...
502 $noMoreClosingTag[$name] = true;
507 // <includeonly> and <noinclude> just become <ignore> tags
508 if ( in_array( $lowerName, $ignoredElements ) ) {
509 $accum .= '<ignore>' . htmlspecialchars( substr( $text, $tagStartPos, $i - $tagStartPos ) )
515 if ( $attrEnd <= $attrStart ) {
518 $attr = substr( $text, $attrStart, $attrEnd - $attrStart );
520 $accum .= '<name>' . htmlspecialchars( $name ) . '</name>' .
521 // Note that the attr element contains the whitespace between name and attribute,
522 // this is necessary for precise reconstruction during pre-save transform.
523 '<attr>' . htmlspecialchars( $attr ) . '</attr>';
524 if ( $inner !== null ) {
525 $accum .= '<inner>' . htmlspecialchars( $inner ) . '</inner>';
527 $accum .= $close . '</ext>';
528 } elseif ( $found == 'line-start' ) {
529 // Is this the start of a heading?
530 // Line break belongs before the heading element in any case
531 if ( $fakeLineStart ) {
532 $fakeLineStart = false;
538 $count = strspn( $text, '=', $i, 6 );
539 if ( $count == 1 && $findEquals ) {
540 // DWIM: This looks kind of like a name/value separator.
541 // Let's let the equals handler have it and break the
542 // potential heading. This is heuristic, but AFAICT the
543 // methods for completely correct disambiguation are very
545 } elseif ( $count > 0 ) {
549 'parts' => [ new PPDPart( str_repeat( '=', $count ) ) ],
552 $stack->push( $piece );
553 $accum =& $stack->getAccum();
554 $stackFlags = $stack->getFlags();
555 if ( isset( $stackFlags['findEquals'] ) ) {
556 $findEquals = $stackFlags['findEquals'];
558 if ( isset( $stackFlags['findPipe'] ) ) {
559 $findPipe = $stackFlags['findPipe'];
561 if ( isset( $stackFlags['inHeading'] ) ) {
562 $inHeading = $stackFlags['inHeading'];
566 } elseif ( $found == 'line-end' ) {
567 $piece = $stack->top
;
568 // A heading must be open, otherwise \n wouldn't have been in the search list
569 assert( $piece->open
=== "\n" );
570 $part = $piece->getCurrentPart();
571 // Search back through the input to see if it has a proper close.
572 // Do this using the reversed string since the other solutions
573 // (end anchor, etc.) are inefficient.
574 $wsLength = strspn( $revText, " \t", $lengthText - $i );
575 $searchStart = $i - $wsLength;
576 if ( isset( $part->commentEnd
) && $searchStart - 1 == $part->commentEnd
) {
577 // Comment found at line end
578 // Search for equals signs before the comment
579 $searchStart = $part->visualEnd
;
580 $searchStart -= strspn( $revText, " \t", $lengthText - $searchStart );
582 $count = $piece->count
;
583 $equalsLength = strspn( $revText, '=', $lengthText - $searchStart );
584 if ( $equalsLength > 0 ) {
585 if ( $searchStart - $equalsLength == $piece->startPos
) {
586 // This is just a single string of equals signs on its own line
587 // Replicate the doHeadings behavior /={count}(.+)={count}/
588 // First find out how many equals signs there really are (don't stop at 6)
589 $count = $equalsLength;
593 $count = min( 6, intval( ( $count - 1 ) / 2 ) );
596 $count = min( $equalsLength, $count );
599 // Normal match, output <h>
600 $element = "<h level=\"$count\" i=\"$headingIndex\">$accum</h>";
603 // Single equals sign on its own line, count=0
607 // No match, no <h>, just pass down the inner text
612 $accum =& $stack->getAccum();
613 $stackFlags = $stack->getFlags();
614 if ( isset( $stackFlags['findEquals'] ) ) {
615 $findEquals = $stackFlags['findEquals'];
617 if ( isset( $stackFlags['findPipe'] ) ) {
618 $findPipe = $stackFlags['findPipe'];
620 if ( isset( $stackFlags['inHeading'] ) ) {
621 $inHeading = $stackFlags['inHeading'];
624 // Append the result to the enclosing accumulator
626 // Note that we do NOT increment the input pointer.
627 // This is because the closing linebreak could be the opening linebreak of
628 // another heading. Infinite loops are avoided because the next iteration MUST
629 // hit the heading open case above, which unconditionally increments the
631 } elseif ( $found == 'open' ) {
632 # count opening brace characters
633 $curLen = strlen( $curChar );
634 $count = ( $curLen > 1 ) ?
635 # allow the final character to repeat
636 strspn( $text, $curChar[$curLen - 1], $i +
1 ) +
1 :
637 strspn( $text, $curChar, $i );
640 $lineStart = ( $i > 0 && $text[$i - 1] == "\n" );
642 if ( $curChar === "-{" && $count > $curLen ) {
643 // -{ => {{ transition because rightmost wins
648 $rule = $this->rules
[$curChar];
651 # we need to add to stack only if opening brace count is enough for one of the rules
652 if ( $count >= $rule['min'] ) {
653 # Add it to the stack
656 'close' => $rule['end'],
657 'savedPrefix' => $savedPrefix,
659 'lineStart' => $lineStart,
662 $stack->push( $piece );
663 $accum =& $stack->getAccum();
664 $stackFlags = $stack->getFlags();
665 if ( isset( $stackFlags['findEquals'] ) ) {
666 $findEquals = $stackFlags['findEquals'];
668 if ( isset( $stackFlags['findPipe'] ) ) {
669 $findPipe = $stackFlags['findPipe'];
671 if ( isset( $stackFlags['inHeading'] ) ) {
672 $inHeading = $stackFlags['inHeading'];
675 # Add literal brace(s)
676 $accum .= htmlspecialchars( $savedPrefix . str_repeat( $curChar, $count ) );
679 } elseif ( $found == 'close' ) {
680 $piece = $stack->top
;
681 # lets check if there are enough characters for closing brace
682 $maxCount = $piece->count
;
683 if ( $piece->close
=== '}-' && $curChar === '}' ) {
684 $maxCount--; # don't try to match closing '-' as a '}'
686 $curLen = strlen( $curChar );
687 $count = ( $curLen > 1 ) ?
$curLen :
688 strspn( $text, $curChar, $i, $maxCount );
690 # check for maximum matching characters (if there are 5 closing
691 # characters, we will probably need only 3 - depending on the rules)
692 $rule = $this->rules
[$piece->open
];
693 if ( $count > $rule['max'] ) {
694 # The specified maximum exists in the callback array, unless the caller
696 $matchingCount = $rule['max'];
698 # Count is less than the maximum
699 # Skip any gaps in the callback array to find the true largest match
700 # Need to use array_key_exists not isset because the callback can be null
701 $matchingCount = $count;
702 while ( $matchingCount > 0 && !array_key_exists( $matchingCount, $rule['names'] ) ) {
707 if ( $matchingCount <= 0 ) {
708 # No matching element found in callback array
709 # Output a literal closing brace and continue
710 $endText = substr( $text, $i, $count );
711 $accum .= htmlspecialchars( $endText );
715 $name = $rule['names'][$matchingCount];
716 if ( $name === null ) {
717 // No element, just literal text
718 $endText = substr( $text, $i, $matchingCount );
719 $element = $piece->breakSyntax( $matchingCount ) . $endText;
722 # Note: $parts is already XML, does not need to be encoded further
723 $parts = $piece->parts
;
724 $title = $parts[0]->out
;
727 # The invocation is at the start of the line if lineStart is set in
728 # the stack, and all opening brackets are used up.
729 if ( $maxCount == $matchingCount &&
730 !empty( $piece->lineStart
) &&
731 strlen( $piece->savedPrefix
) == 0 ) {
732 $attr = ' lineStart="1"';
737 $element = "<$name$attr>";
738 $element .= "<title>$title</title>";
740 foreach ( $parts as $part ) {
741 if ( isset( $part->eqpos
) ) {
742 $argName = substr( $part->out
, 0, $part->eqpos
);
743 $argValue = substr( $part->out
, $part->eqpos +
1 );
744 $element .= "<part><name>$argName</name>=<value>$argValue</value></part>";
746 $element .= "<part><name index=\"$argIndex\" /><value>{$part->out}</value></part>";
750 $element .= "</$name>";
753 # Advance input pointer
754 $i +
= $matchingCount;
758 $accum =& $stack->getAccum();
760 # Re-add the old stack element if it still has unmatched opening characters remaining
761 if ( $matchingCount < $piece->count
) {
762 $piece->parts
= [ new PPDPart
];
763 $piece->count
-= $matchingCount;
764 # do we still qualify for any callback with remaining count?
765 $min = $this->rules
[$piece->open
]['min'];
766 if ( $piece->count
>= $min ) {
767 $stack->push( $piece );
768 $accum =& $stack->getAccum();
769 } elseif ( $piece->count
== 1 && $piece->open
=== '{' && $piece->savedPrefix
=== '-' ) {
770 $piece->savedPrefix
= '';
773 $piece->close
= $this->rules
[$piece->open
]['end'];
774 $stack->push( $piece );
775 $accum =& $stack->getAccum();
777 $s = substr( $piece->open
, 0, -1 );
779 substr( $piece->open
, -1 ),
780 $piece->count
- strlen( $s )
782 $accum .= $piece->savedPrefix
. $s;
784 } elseif ( $piece->savedPrefix
!== '' ) {
785 $accum .= $piece->savedPrefix
;
788 $stackFlags = $stack->getFlags();
789 if ( isset( $stackFlags['findEquals'] ) ) {
790 $findEquals = $stackFlags['findEquals'];
792 if ( isset( $stackFlags['findPipe'] ) ) {
793 $findPipe = $stackFlags['findPipe'];
795 if ( isset( $stackFlags['inHeading'] ) ) {
796 $inHeading = $stackFlags['inHeading'];
799 # Add XML element to the enclosing accumulator
801 } elseif ( $found == 'pipe' ) {
802 $findEquals = true; // shortcut for getFlags()
804 $accum =& $stack->getAccum();
806 } elseif ( $found == 'equals' ) {
807 $findEquals = false; // shortcut for getFlags()
808 $stack->getCurrentPart()->eqpos
= strlen( $accum );
814 # Output any remaining unclosed brackets
815 foreach ( $stack->stack
as $piece ) {
816 $stack->rootAccum
.= $piece->breakSyntax();
818 $stack->rootAccum
.= '</root>';
819 $xml = $stack->rootAccum
;
826 * Stack class to help Preprocessor::preprocessToObj()
830 public $stack, $rootAccum;
837 public $elementClass = PPDStackElement
::class;
839 public static $false = false;
841 public function __construct() {
844 $this->rootAccum
= '';
845 $this->accum
=& $this->rootAccum
;
851 public function count() {
852 return count( $this->stack
);
855 public function &getAccum() {
859 public function getCurrentPart() {
860 if ( $this->top
=== false ) {
863 return $this->top
->getCurrentPart();
867 public function push( $data ) {
868 if ( $data instanceof $this->elementClass
) {
869 $this->stack
[] = $data;
871 $class = $this->elementClass
;
872 $this->stack
[] = new $class( $data );
874 $this->top
= $this->stack
[count( $this->stack
) - 1];
875 $this->accum
=& $this->top
->getAccum();
878 public function pop() {
879 if ( !count( $this->stack
) ) {
880 throw new MWException( __METHOD__
. ': no elements remaining' );
882 $temp = array_pop( $this->stack
);
884 if ( count( $this->stack
) ) {
885 $this->top
= $this->stack
[count( $this->stack
) - 1];
886 $this->accum
=& $this->top
->getAccum();
888 $this->top
= self
::$false;
889 $this->accum
=& $this->rootAccum
;
894 public function addPart( $s = '' ) {
895 $this->top
->addPart( $s );
896 $this->accum
=& $this->top
->getAccum();
902 public function getFlags() {
903 if ( !count( $this->stack
) ) {
905 'findEquals' => false,
907 'inHeading' => false,
910 return $this->top
->getFlags();
918 class PPDStackElement
{
920 * @var string Opening character (\n for heading)
925 * @var string Matching closing character
930 * @var string Saved prefix that may affect later processing,
931 * e.g. to differentiate `-{{{{` and `{{{{` after later seeing `}}}`.
933 public $savedPrefix = '';
936 * @var int Number of opening characters found (number of "=" for heading)
941 * @var PPDPart[] Array of PPDPart objects describing pipe-separated parts.
946 * @var bool True if the open char appeared at the start of the input line.
947 * Not set for headings.
951 public $partClass = PPDPart
::class;
953 public function __construct( $data = [] ) {
954 $class = $this->partClass
;
955 $this->parts
= [ new $class ];
957 foreach ( $data as $name => $value ) {
958 $this->$name = $value;
962 public function &getAccum() {
963 return $this->parts
[count( $this->parts
) - 1]->out
;
966 public function addPart( $s = '' ) {
967 $class = $this->partClass
;
968 $this->parts
[] = new $class( $s );
971 public function getCurrentPart() {
972 return $this->parts
[count( $this->parts
) - 1];
978 public function getFlags() {
979 $partCount = count( $this->parts
);
980 $findPipe = $this->open
!= "\n" && $this->open
!= '[';
982 'findPipe' => $findPipe,
983 'findEquals' => $findPipe && $partCount > 1 && !isset( $this->parts
[$partCount - 1]->eqpos
),
984 'inHeading' => $this->open
== "\n",
989 * Get the output string that would result if the close is not found.
991 * @param bool|int $openingCount
994 public function breakSyntax( $openingCount = false ) {
995 if ( $this->open
== "\n" ) {
996 $s = $this->savedPrefix
. $this->parts
[0]->out
;
998 if ( $openingCount === false ) {
999 $openingCount = $this->count
;
1001 $s = substr( $this->open
, 0, -1 );
1003 substr( $this->open
, -1 ),
1004 $openingCount - strlen( $s )
1006 $s = $this->savedPrefix
. $s;
1008 foreach ( $this->parts
as $part ) {
1026 * @var string Output accumulator string
1030 // Optional member variables:
1031 // eqpos Position of equals sign in output accumulator
1032 // commentEnd Past-the-end input pointer for the last comment encountered
1033 // visualEnd Past-the-end input pointer for the end of the accumulator minus comments
1035 public function __construct( $out = '' ) {
1041 * An expansion frame, used as a context to expand the result of preprocessToObj()
1044 // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
1045 class PPFrame_DOM
implements PPFrame
{
1050 public $preprocessor;
1064 * Hashtable listing templates which are disallowed for expansion in this frame,
1065 * having been encountered previously in parent frames.
1067 public $loopCheckHash;
1070 * Recursion depth of this frame, top = 0
1071 * Note that this is NOT the same as expansion depth in expand()
1075 private $volatile = false;
1076 private $ttl = null;
1081 protected $childExpansionCache;
1084 * Construct a new preprocessor frame.
1085 * @param Preprocessor $preprocessor The parent preprocessor
1087 public function __construct( $preprocessor ) {
1088 $this->preprocessor
= $preprocessor;
1089 $this->parser
= $preprocessor->parser
;
1090 $this->title
= $this->parser
->mTitle
;
1091 $this->titleCache
= [ $this->title ?
$this->title
->getPrefixedDBkey() : false ];
1092 $this->loopCheckHash
= [];
1094 $this->childExpansionCache
= [];
1098 * Create a new child frame
1099 * $args is optionally a multi-root PPNode or array containing the template arguments
1101 * @param bool|array $args
1102 * @param Title|bool $title
1103 * @param int $indexOffset
1104 * @return PPTemplateFrame_DOM
1106 public function newChild( $args = false, $title = false, $indexOffset = 0 ) {
1109 if ( $title === false ) {
1110 $title = $this->title
;
1112 if ( $args !== false ) {
1114 if ( $args instanceof PPNode
) {
1115 $args = $args->node
;
1117 foreach ( $args as $arg ) {
1118 if ( $arg instanceof PPNode
) {
1121 if ( !$xpath ||
$xpath->document
!== $arg->ownerDocument
) {
1122 $xpath = new DOMXPath( $arg->ownerDocument
);
1125 $nameNodes = $xpath->query( 'name', $arg );
1126 $value = $xpath->query( 'value', $arg );
1127 if ( $nameNodes->item( 0 )->hasAttributes() ) {
1128 // Numbered parameter
1129 $index = $nameNodes->item( 0 )->attributes
->getNamedItem( 'index' )->textContent
;
1130 $index = $index - $indexOffset;
1131 if ( isset( $namedArgs[$index] ) ||
isset( $numberedArgs[$index] ) ) {
1132 $this->parser
->getOutput()->addWarning( wfMessage( 'duplicate-args-warning',
1133 wfEscapeWikiText( $this->title
),
1134 wfEscapeWikiText( $title ),
1135 wfEscapeWikiText( $index ) )->text() );
1136 $this->parser
->addTrackingCategory( 'duplicate-args-category' );
1138 $numberedArgs[$index] = $value->item( 0 );
1139 unset( $namedArgs[$index] );
1142 $name = trim( $this->expand( $nameNodes->item( 0 ), PPFrame
::STRIP_COMMENTS
) );
1143 if ( isset( $namedArgs[$name] ) ||
isset( $numberedArgs[$name] ) ) {
1144 $this->parser
->getOutput()->addWarning( wfMessage( 'duplicate-args-warning',
1145 wfEscapeWikiText( $this->title
),
1146 wfEscapeWikiText( $title ),
1147 wfEscapeWikiText( $name ) )->text() );
1148 $this->parser
->addTrackingCategory( 'duplicate-args-category' );
1150 $namedArgs[$name] = $value->item( 0 );
1151 unset( $numberedArgs[$name] );
1155 return new PPTemplateFrame_DOM( $this->preprocessor
, $this, $numberedArgs, $namedArgs, $title );
1159 * @throws MWException
1160 * @param string|int $key
1161 * @param string|PPNode_DOM|DOMDocument $root
1165 public function cachedExpand( $key, $root, $flags = 0 ) {
1166 // we don't have a parent, so we don't have a cache
1167 return $this->expand( $root, $flags );
1171 * @throws MWException
1172 * @param string|PPNode_DOM|DOMDocument $root
1176 public function expand( $root, $flags = 0 ) {
1177 static $expansionDepth = 0;
1178 if ( is_string( $root ) ) {
1182 if ( ++
$this->parser
->mPPNodeCount
> $this->parser
->mOptions
->getMaxPPNodeCount() ) {
1183 $this->parser
->limitationWarn( 'node-count-exceeded',
1184 $this->parser
->mPPNodeCount
,
1185 $this->parser
->mOptions
->getMaxPPNodeCount()
1187 return '<span class="error">Node-count limit exceeded</span>';
1190 if ( $expansionDepth > $this->parser
->mOptions
->getMaxPPExpandDepth() ) {
1191 $this->parser
->limitationWarn( 'expansion-depth-exceeded',
1193 $this->parser
->mOptions
->getMaxPPExpandDepth()
1195 return '<span class="error">Expansion depth limit exceeded</span>';
1198 if ( $expansionDepth > $this->parser
->mHighestExpansionDepth
) {
1199 $this->parser
->mHighestExpansionDepth
= $expansionDepth;
1202 if ( $root instanceof PPNode_DOM
) {
1203 $root = $root->node
;
1205 if ( $root instanceof DOMDocument
) {
1206 $root = $root->documentElement
;
1209 $outStack = [ '', '' ];
1210 $iteratorStack = [ false, $root ];
1211 $indexStack = [ 0, 0 ];
1213 while ( count( $iteratorStack ) > 1 ) {
1214 $level = count( $outStack ) - 1;
1215 $iteratorNode =& $iteratorStack[$level];
1216 $out =& $outStack[$level];
1217 $index =& $indexStack[$level];
1219 if ( $iteratorNode instanceof PPNode_DOM
) {
1220 $iteratorNode = $iteratorNode->node
;
1223 if ( is_array( $iteratorNode ) ) {
1224 if ( $index >= count( $iteratorNode ) ) {
1225 // All done with this iterator
1226 $iteratorStack[$level] = false;
1227 $contextNode = false;
1229 $contextNode = $iteratorNode[$index];
1232 } elseif ( $iteratorNode instanceof DOMNodeList
) {
1233 if ( $index >= $iteratorNode->length
) {
1234 // All done with this iterator
1235 $iteratorStack[$level] = false;
1236 $contextNode = false;
1238 $contextNode = $iteratorNode->item( $index );
1242 // Copy to $contextNode and then delete from iterator stack,
1243 // because this is not an iterator but we do have to execute it once
1244 $contextNode = $iteratorStack[$level];
1245 $iteratorStack[$level] = false;
1248 if ( $contextNode instanceof PPNode_DOM
) {
1249 $contextNode = $contextNode->node
;
1252 $newIterator = false;
1254 if ( $contextNode === false ) {
1256 } elseif ( is_string( $contextNode ) ) {
1257 $out .= $contextNode;
1258 } elseif ( is_array( $contextNode ) ||
$contextNode instanceof DOMNodeList
) {
1259 $newIterator = $contextNode;
1260 } elseif ( $contextNode instanceof DOMNode
) {
1261 if ( $contextNode->nodeType
== XML_TEXT_NODE
) {
1262 $out .= $contextNode->nodeValue
;
1263 } elseif ( $contextNode->nodeName
== 'template' ) {
1264 # Double-brace expansion
1265 $xpath = new DOMXPath( $contextNode->ownerDocument
);
1266 $titles = $xpath->query( 'title', $contextNode );
1267 $title = $titles->item( 0 );
1268 $parts = $xpath->query( 'part', $contextNode );
1269 if ( $flags & PPFrame
::NO_TEMPLATES
) {
1270 $newIterator = $this->virtualBracketedImplode( '{{', '|', '}}', $title, $parts );
1272 $lineStart = $contextNode->getAttribute( 'lineStart' );
1274 'title' => new PPNode_DOM( $title ),
1275 'parts' => new PPNode_DOM( $parts ),
1276 'lineStart' => $lineStart ];
1277 $ret = $this->parser
->braceSubstitution( $params, $this );
1278 if ( isset( $ret['object'] ) ) {
1279 $newIterator = $ret['object'];
1281 $out .= $ret['text'];
1284 } elseif ( $contextNode->nodeName
== 'tplarg' ) {
1285 # Triple-brace expansion
1286 $xpath = new DOMXPath( $contextNode->ownerDocument
);
1287 $titles = $xpath->query( 'title', $contextNode );
1288 $title = $titles->item( 0 );
1289 $parts = $xpath->query( 'part', $contextNode );
1290 if ( $flags & PPFrame
::NO_ARGS
) {
1291 $newIterator = $this->virtualBracketedImplode( '{{{', '|', '}}}', $title, $parts );
1294 'title' => new PPNode_DOM( $title ),
1295 'parts' => new PPNode_DOM( $parts ) ];
1296 $ret = $this->parser
->argSubstitution( $params, $this );
1297 if ( isset( $ret['object'] ) ) {
1298 $newIterator = $ret['object'];
1300 $out .= $ret['text'];
1303 } elseif ( $contextNode->nodeName
== 'comment' ) {
1304 # HTML-style comment
1305 # Remove it in HTML, pre+remove and STRIP_COMMENTS modes
1306 # Not in RECOVER_COMMENTS mode (msgnw) though.
1307 if ( ( $this->parser
->ot
['html']
1308 ||
( $this->parser
->ot
['pre'] && $this->parser
->mOptions
->getRemoveComments() )
1309 ||
( $flags & PPFrame
::STRIP_COMMENTS
)
1310 ) && !( $flags & PPFrame
::RECOVER_COMMENTS
)
1313 } elseif ( $this->parser
->ot
['wiki'] && !( $flags & PPFrame
::RECOVER_COMMENTS
) ) {
1314 # Add a strip marker in PST mode so that pstPass2() can
1315 # run some old-fashioned regexes on the result.
1316 # Not in RECOVER_COMMENTS mode (extractSections) though.
1317 $out .= $this->parser
->insertStripItem( $contextNode->textContent
);
1319 # Recover the literal comment in RECOVER_COMMENTS and pre+no-remove
1320 $out .= $contextNode->textContent
;
1322 } elseif ( $contextNode->nodeName
== 'ignore' ) {
1323 # Output suppression used by <includeonly> etc.
1324 # OT_WIKI will only respect <ignore> in substed templates.
1325 # The other output types respect it unless NO_IGNORE is set.
1326 # extractSections() sets NO_IGNORE and so never respects it.
1327 if ( ( !isset( $this->parent
) && $this->parser
->ot
['wiki'] )
1328 ||
( $flags & PPFrame
::NO_IGNORE
)
1330 $out .= $contextNode->textContent
;
1334 } elseif ( $contextNode->nodeName
== 'ext' ) {
1336 $xpath = new DOMXPath( $contextNode->ownerDocument
);
1337 $names = $xpath->query( 'name', $contextNode );
1338 $attrs = $xpath->query( 'attr', $contextNode );
1339 $inners = $xpath->query( 'inner', $contextNode );
1340 $closes = $xpath->query( 'close', $contextNode );
1341 if ( $flags & PPFrame
::NO_TAGS
) {
1342 $s = '<' . $this->expand( $names->item( 0 ), $flags );
1343 if ( $attrs->length
> 0 ) {
1344 $s .= $this->expand( $attrs->item( 0 ), $flags );
1346 if ( $inners->length
> 0 ) {
1347 $s .= '>' . $this->expand( $inners->item( 0 ), $flags );
1348 if ( $closes->length
> 0 ) {
1349 $s .= $this->expand( $closes->item( 0 ), $flags );
1357 'name' => new PPNode_DOM( $names->item( 0 ) ),
1358 'attr' => $attrs->length
> 0 ?
new PPNode_DOM( $attrs->item( 0 ) ) : null,
1359 'inner' => $inners->length
> 0 ?
new PPNode_DOM( $inners->item( 0 ) ) : null,
1360 'close' => $closes->length
> 0 ?
new PPNode_DOM( $closes->item( 0 ) ) : null,
1362 $out .= $this->parser
->extensionSubstitution( $params, $this );
1364 } elseif ( $contextNode->nodeName
== 'h' ) {
1366 $s = $this->expand( $contextNode->childNodes
, $flags );
1368 # Insert a heading marker only for <h> children of <root>
1369 # This is to stop extractSections from going over multiple tree levels
1370 if ( $contextNode->parentNode
->nodeName
== 'root' && $this->parser
->ot
['html'] ) {
1371 # Insert heading index marker
1372 $headingIndex = $contextNode->getAttribute( 'i' );
1373 $titleText = $this->title
->getPrefixedDBkey();
1374 $this->parser
->mHeadings
[] = [ $titleText, $headingIndex ];
1375 $serial = count( $this->parser
->mHeadings
) - 1;
1376 $marker = Parser
::MARKER_PREFIX
. "-h-$serial-" . Parser
::MARKER_SUFFIX
;
1377 $count = $contextNode->getAttribute( 'level' );
1378 $s = substr( $s, 0, $count ) . $marker . substr( $s, $count );
1379 $this->parser
->mStripState
->addGeneral( $marker, '' );
1383 # Generic recursive expansion
1384 $newIterator = $contextNode->childNodes
;
1387 throw new MWException( __METHOD__
. ': Invalid parameter type' );
1390 if ( $newIterator !== false ) {
1391 if ( $newIterator instanceof PPNode_DOM
) {
1392 $newIterator = $newIterator->node
;
1395 $iteratorStack[] = $newIterator;
1397 } elseif ( $iteratorStack[$level] === false ) {
1398 // Return accumulated value to parent
1399 // With tail recursion
1400 while ( $iteratorStack[$level] === false && $level > 0 ) {
1401 $outStack[$level - 1] .= $out;
1402 array_pop( $outStack );
1403 array_pop( $iteratorStack );
1404 array_pop( $indexStack );
1410 return $outStack[0];
1414 * @param string $sep
1416 * @param string|PPNode_DOM|DOMDocument $args,...
1419 public function implodeWithFlags( $sep, $flags /*, ... */ ) {
1420 $args = array_slice( func_get_args(), 2 );
1424 foreach ( $args as $root ) {
1425 if ( $root instanceof PPNode_DOM
) {
1426 $root = $root->node
;
1428 if ( !is_array( $root ) && !( $root instanceof DOMNodeList
) ) {
1431 foreach ( $root as $node ) {
1437 $s .= $this->expand( $node, $flags );
1444 * Implode with no flags specified
1445 * This previously called implodeWithFlags but has now been inlined to reduce stack depth
1447 * @param string $sep
1448 * @param string|PPNode_DOM|DOMDocument $args,...
1451 public function implode( $sep /*, ... */ ) {
1452 $args = array_slice( func_get_args(), 1 );
1456 foreach ( $args as $root ) {
1457 if ( $root instanceof PPNode_DOM
) {
1458 $root = $root->node
;
1460 if ( !is_array( $root ) && !( $root instanceof DOMNodeList
) ) {
1463 foreach ( $root as $node ) {
1469 $s .= $this->expand( $node );
1476 * Makes an object that, when expand()ed, will be the same as one obtained
1479 * @param string $sep
1480 * @param string|PPNode_DOM|DOMDocument $args,...
1483 public function virtualImplode( $sep /*, ... */ ) {
1484 $args = array_slice( func_get_args(), 1 );
1488 foreach ( $args as $root ) {
1489 if ( $root instanceof PPNode_DOM
) {
1490 $root = $root->node
;
1492 if ( !is_array( $root ) && !( $root instanceof DOMNodeList
) ) {
1495 foreach ( $root as $node ) {
1508 * Virtual implode with brackets
1509 * @param string $start
1510 * @param string $sep
1511 * @param string $end
1512 * @param string|PPNode_DOM|DOMDocument $args,...
1515 public function virtualBracketedImplode( $start, $sep, $end /*, ... */ ) {
1516 $args = array_slice( func_get_args(), 3 );
1520 foreach ( $args as $root ) {
1521 if ( $root instanceof PPNode_DOM
) {
1522 $root = $root->node
;
1524 if ( !is_array( $root ) && !( $root instanceof DOMNodeList
) ) {
1527 foreach ( $root as $node ) {
1540 public function __toString() {
1544 public function getPDBK( $level = false ) {
1545 if ( $level === false ) {
1546 return $this->title
->getPrefixedDBkey();
1548 return isset( $this->titleCache
[$level] ) ?
$this->titleCache
[$level] : false;
1555 public function getArguments() {
1562 public function getNumberedArguments() {
1569 public function getNamedArguments() {
1574 * Returns true if there are no arguments in this frame
1578 public function isEmpty() {
1583 * @param int|string $name
1584 * @return bool Always false in this implementation.
1586 public function getArgument( $name ) {
1591 * Returns true if the infinite loop check is OK, false if a loop is detected
1593 * @param Title $title
1596 public function loopCheck( $title ) {
1597 return !isset( $this->loopCheckHash
[$title->getPrefixedDBkey()] );
1601 * Return true if the frame is a template frame
1605 public function isTemplate() {
1610 * Get a title of frame
1614 public function getTitle() {
1615 return $this->title
;
1619 * Set the volatile flag
1623 public function setVolatile( $flag = true ) {
1624 $this->volatile
= $flag;
1628 * Get the volatile flag
1632 public function isVolatile() {
1633 return $this->volatile
;
1641 public function setTTL( $ttl ) {
1642 if ( $ttl !== null && ( $this->ttl
=== null ||
$ttl < $this->ttl
) ) {
1652 public function getTTL() {
1658 * Expansion frame with template arguments
1661 // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
1662 class PPTemplateFrame_DOM
extends PPFrame_DOM
{
1664 public $numberedArgs, $namedArgs;
1670 public $numberedExpansionCache, $namedExpansionCache;
1673 * @param Preprocessor $preprocessor
1674 * @param bool|PPFrame_DOM $parent
1675 * @param array $numberedArgs
1676 * @param array $namedArgs
1677 * @param bool|Title $title
1679 public function __construct( $preprocessor, $parent = false, $numberedArgs = [],
1680 $namedArgs = [], $title = false
1682 parent
::__construct( $preprocessor );
1684 $this->parent
= $parent;
1685 $this->numberedArgs
= $numberedArgs;
1686 $this->namedArgs
= $namedArgs;
1687 $this->title
= $title;
1688 $pdbk = $title ?
$title->getPrefixedDBkey() : false;
1689 $this->titleCache
= $parent->titleCache
;
1690 $this->titleCache
[] = $pdbk;
1691 $this->loopCheckHash
= /*clone*/ $parent->loopCheckHash
;
1692 if ( $pdbk !== false ) {
1693 $this->loopCheckHash
[$pdbk] = true;
1695 $this->depth
= $parent->depth +
1;
1696 $this->numberedExpansionCache
= $this->namedExpansionCache
= [];
1699 public function __toString() {
1702 $args = $this->numberedArgs +
$this->namedArgs
;
1703 foreach ( $args as $name => $value ) {
1709 $s .= "\"$name\":\"" .
1710 str_replace( '"', '\\"', $value->ownerDocument
->saveXML( $value ) ) . '"';
1717 * @throws MWException
1718 * @param string|int $key
1719 * @param string|PPNode_DOM|DOMDocument $root
1723 public function cachedExpand( $key, $root, $flags = 0 ) {
1724 if ( isset( $this->parent
->childExpansionCache
[$key] ) ) {
1725 return $this->parent
->childExpansionCache
[$key];
1727 $retval = $this->expand( $root, $flags );
1728 if ( !$this->isVolatile() ) {
1729 $this->parent
->childExpansionCache
[$key] = $retval;
1735 * Returns true if there are no arguments in this frame
1739 public function isEmpty() {
1740 return !count( $this->numberedArgs
) && !count( $this->namedArgs
);
1743 public function getArguments() {
1745 foreach ( array_merge(
1746 array_keys( $this->numberedArgs
),
1747 array_keys( $this->namedArgs
) ) as $key ) {
1748 $arguments[$key] = $this->getArgument( $key );
1753 public function getNumberedArguments() {
1755 foreach ( array_keys( $this->numberedArgs
) as $key ) {
1756 $arguments[$key] = $this->getArgument( $key );
1761 public function getNamedArguments() {
1763 foreach ( array_keys( $this->namedArgs
) as $key ) {
1764 $arguments[$key] = $this->getArgument( $key );
1771 * @return string|bool
1773 public function getNumberedArgument( $index ) {
1774 if ( !isset( $this->numberedArgs
[$index] ) ) {
1777 if ( !isset( $this->numberedExpansionCache
[$index] ) ) {
1778 # No trimming for unnamed arguments
1779 $this->numberedExpansionCache
[$index] = $this->parent
->expand(
1780 $this->numberedArgs
[$index],
1781 PPFrame
::STRIP_COMMENTS
1784 return $this->numberedExpansionCache
[$index];
1788 * @param string $name
1789 * @return string|bool
1791 public function getNamedArgument( $name ) {
1792 if ( !isset( $this->namedArgs
[$name] ) ) {
1795 if ( !isset( $this->namedExpansionCache
[$name] ) ) {
1796 # Trim named arguments post-expand, for backwards compatibility
1797 $this->namedExpansionCache
[$name] = trim(
1798 $this->parent
->expand( $this->namedArgs
[$name], PPFrame
::STRIP_COMMENTS
) );
1800 return $this->namedExpansionCache
[$name];
1804 * @param int|string $name
1805 * @return string|bool
1807 public function getArgument( $name ) {
1808 $text = $this->getNumberedArgument( $name );
1809 if ( $text === false ) {
1810 $text = $this->getNamedArgument( $name );
1816 * Return true if the frame is a template frame
1820 public function isTemplate() {
1824 public function setVolatile( $flag = true ) {
1825 parent
::setVolatile( $flag );
1826 $this->parent
->setVolatile( $flag );
1829 public function setTTL( $ttl ) {
1830 parent
::setTTL( $ttl );
1831 $this->parent
->setTTL( $ttl );
1836 * Expansion frame with custom arguments
1839 // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
1840 class PPCustomFrame_DOM
extends PPFrame_DOM
{
1844 public function __construct( $preprocessor, $args ) {
1845 parent
::__construct( $preprocessor );
1846 $this->args
= $args;
1849 public function __toString() {
1852 foreach ( $this->args
as $name => $value ) {
1858 $s .= "\"$name\":\"" .
1859 str_replace( '"', '\\"', $value->__toString() ) . '"';
1868 public function isEmpty() {
1869 return !count( $this->args
);
1873 * @param int|string $index
1874 * @return string|bool
1876 public function getArgument( $index ) {
1877 if ( !isset( $this->args
[$index] ) ) {
1880 return $this->args
[$index];
1883 public function getArguments() {
1891 // phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
1892 class PPNode_DOM
implements PPNode
{
1900 public function __construct( $node, $xpath = false ) {
1901 $this->node
= $node;
1907 public function getXPath() {
1908 if ( $this->xpath
=== null ) {
1909 $this->xpath
= new DOMXPath( $this->node
->ownerDocument
);
1911 return $this->xpath
;
1914 public function __toString() {
1915 if ( $this->node
instanceof DOMNodeList
) {
1917 foreach ( $this->node
as $node ) {
1918 $s .= $node->ownerDocument
->saveXML( $node );
1921 $s = $this->node
->ownerDocument
->saveXML( $this->node
);
1927 * @return bool|PPNode_DOM
1929 public function getChildren() {
1930 return $this->node
->childNodes ?
new self( $this->node
->childNodes
) : false;
1934 * @return bool|PPNode_DOM
1936 public function getFirstChild() {
1937 return $this->node
->firstChild ?
new self( $this->node
->firstChild
) : false;
1941 * @return bool|PPNode_DOM
1943 public function getNextSibling() {
1944 return $this->node
->nextSibling ?
new self( $this->node
->nextSibling
) : false;
1948 * @param string $type
1950 * @return bool|PPNode_DOM
1952 public function getChildrenOfType( $type ) {
1953 return new self( $this->getXPath()->query( $type, $this->node
) );
1959 public function getLength() {
1960 if ( $this->node
instanceof DOMNodeList
) {
1961 return $this->node
->length
;
1969 * @return bool|PPNode_DOM
1971 public function item( $i ) {
1972 $item = $this->node
->item( $i );
1973 return $item ?
new self( $item ) : false;
1979 public function getName() {
1980 if ( $this->node
instanceof DOMNodeList
) {
1983 return $this->node
->nodeName
;
1988 * Split a "<part>" node into an associative array containing:
1989 * - name PPNode name
1990 * - index String index
1991 * - value PPNode value
1993 * @throws MWException
1996 public function splitArg() {
1997 $xpath = $this->getXPath();
1998 $names = $xpath->query( 'name', $this->node
);
1999 $values = $xpath->query( 'value', $this->node
);
2000 if ( !$names->length ||
!$values->length
) {
2001 throw new MWException( 'Invalid brace node passed to ' . __METHOD__
);
2003 $name = $names->item( 0 );
2004 $index = $name->getAttribute( 'index' );
2006 'name' => new self( $name ),
2008 'value' => new self( $values->item( 0 ) ) ];
2012 * Split an "<ext>" node into an associative array containing name, attr, inner and close
2013 * All values in the resulting array are PPNodes. Inner and close are optional.
2015 * @throws MWException
2018 public function splitExt() {
2019 $xpath = $this->getXPath();
2020 $names = $xpath->query( 'name', $this->node
);
2021 $attrs = $xpath->query( 'attr', $this->node
);
2022 $inners = $xpath->query( 'inner', $this->node
);
2023 $closes = $xpath->query( 'close', $this->node
);
2024 if ( !$names->length ||
!$attrs->length
) {
2025 throw new MWException( 'Invalid ext node passed to ' . __METHOD__
);
2028 'name' => new self( $names->item( 0 ) ),
2029 'attr' => new self( $attrs->item( 0 ) ) ];
2030 if ( $inners->length
) {
2031 $parts['inner'] = new self( $inners->item( 0 ) );
2033 if ( $closes->length
) {
2034 $parts['close'] = new self( $closes->item( 0 ) );
2040 * Split a "<h>" node
2041 * @throws MWException
2044 public function splitHeading() {
2045 if ( $this->getName() !== 'h' ) {
2046 throw new MWException( 'Invalid h node passed to ' . __METHOD__
);
2049 'i' => $this->node
->getAttribute( 'i' ),
2050 'level' => $this->node
->getAttribute( 'level' ),
2051 'contents' => $this->getChildren()