var $mRevisionsLoaded = false; // Have the revisions been loaded
var $mTextLoaded = 0; // How many text blobs have been loaded, 0, 1 or 2?
var $mCacheHit = false; // Was the diff fetched from cache?
- var $htmldiff;
/**
* Set this to true to add debug info to the HTML output.
* @param $new String: either 'prev' or 'next'.
* @param $rcid Integer: ??? FIXME (default 0)
* @param $refreshCache boolean If set, refreshes the diff cache
- * @param $htmldiff boolean If set, output using HTMLDiff instead of raw wikicode diff
* @param $unhide boolean If set, allow viewing deleted revs
*/
function __construct( $titleObj = null, $old = 0, $new = 0, $rcid = 0,
- $refreshCache = false, $htmldiff = false, $unhide = false )
+ $refreshCache = false, $unhide = false )
{
if ( $titleObj ) {
$this->mTitle = $titleObj;
}
$this->mRcidMarkPatrolled = intval($rcid); # force it to be an integer
$this->mRefreshCache = $refreshCache;
- $this->htmldiff = $htmldiff;
$this->unhide = $unhide;
}
}
function showDiffPage( $diffOnly = false ) {
- global $wgUser, $wgOut, $wgUseExternalEditor, $wgUseRCPatrol, $wgEnableHtmlDiff;
+ global $wgUser, $wgOut, $wgUseExternalEditor, $wgUseRCPatrol;
wfProfileIn( __METHOD__ );
$query['diffonly'] = $diffOnly;
}
- $htmldiffarg = $this->htmlDiffArgument();
-
- if( $htmldiffarg ) {
- $query['htmldiff'] = $htmldiffarg['htmldiff'];
- }
-
# Make "previous revision link"
$query['diff'] = 'prev';
$query['oldid'] = $this->mOldid;
$msg = $suppressed ? 'rev-suppressed-unhide-diff' : 'rev-deleted-unhide-diff';
$wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", array( $msg, $link ) );
}
- # Otherwise, output the HTML diff if requested...
- } else if( $wgEnableHtmlDiff && $this->htmldiff ) {
- $multi = $this->getMultiNotice();
- $wgOut->addHTML( '<div class="diff-switchtype">' . $sk->link(
- $this->mTitle,
- wfMsgHtml( 'wikicodecomparison' ),
- array(
- 'id' => 'differences-switchtype'
- ),
- array(
- 'diff' => $this->mNewid,
- 'oldid' => $this->mOldid,
- 'htmldiff' => 0
- ),
- array(
- 'known',
- 'noclasses'
- )
- ) . '</div>');
- $wgOut->addHTML( $this->addHeader( '', $oldHeader, $newHeader, $multi ) );
- # Add deletion notice if the user is viewing deleted content
- if( $deleted ) {
- $msg = $suppressed ? 'rev-suppressed-diff-view' : 'rev-deleted-diff-view';
- $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", $msg );
- }
- $this->renderHtmlDiff();
# Otherwise, output a regular diff...
} else {
- if( $wgEnableHtmlDiff ) {
- $wgOut->addHTML( '<div class="diff-switchtype">' . $sk->link(
- $this->mTitle,
- wfMsgHtml( 'visualcomparison' ),
- array( 'id' => 'differences-switchtype' ),
- array(
- 'diff' => $this->mNewid,
- 'oldid' => $this->mOldid,
- 'htmldiff' => 1
- ),
- array( 'known', 'noclasses' )
- ) . '</div>');
- }
# Add deletion notice if the user is viewing deleted content
$notice = '';
if( $deleted ) {
wfProfileOut( __METHOD__ );
}
-
- function renderHtmlDiff() {
- global $wgOut, $wgParser, $wgDebugComments;
- wfProfileIn( __METHOD__ );
-
- $this->showDiffStyle();
-
- $wgOut->addHTML( '<h2>'.wfMsgHtml( 'visual-comparison' )."</h2>\n" );
- #add deleted rev tag if needed
- if( !$this->mNewRev->userCan(Revision::DELETED_TEXT) ) {
- $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-permission' );
- } else if( $this->mNewRev->isDeleted(Revision::DELETED_TEXT) ) {
- $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-view' );
- }
-
- if( !$this->mNewRev->isCurrent() ) {
- $oldEditSectionSetting = $wgOut->parserOptions()->setEditSection( false );
- }
-
- $this->loadText();
-
- // Old revision
- if( is_object( $this->mOldRev ) ) {
- $wgOut->setRevisionId( $this->mOldRev->getId() );
- }
-
- $popts = $wgOut->parserOptions();
- $oldTidy = $popts->setTidy( true );
- $popts->setEditSection( false );
-
- $parserOutput = $wgParser->parse( $this->mOldtext, $this->getTitle(), $popts, true, true, $wgOut->getRevisionId() );
- $popts->setTidy( $oldTidy );
-
- //only for new?
- //$wgOut->addParserOutputNoText( $parserOutput );
- $oldHtml = $parserOutput->getText();
- wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$oldHtml ) );
-
- // New revision
- if( is_object( $this->mNewRev ) ) {
- $wgOut->setRevisionId( $this->mNewRev->getId() );
- }
-
- $popts = $wgOut->parserOptions();
- $oldTidy = $popts->setTidy( true );
-
- $parserOutput = $wgParser->parse( $this->mNewtext, $this->getTitle(), $popts, true, true, $wgOut->getRevisionId() );
- $popts->setTidy( $oldTidy );
-
- $wgOut->addParserOutputNoText( $parserOutput );
- $newHtml = $parserOutput->getText();
- wfRunHooks( 'OutputPageBeforeHTML', array( &$wgOut, &$newHtml ) );
-
- unset($parserOutput, $popts);
-
- $differ = new HTMLDiffer(new DelegatingContentHandler($wgOut));
- $differ->htmlDiff($oldHtml, $newHtml);
- if ( $wgDebugComments ) {
- $wgOut->addHTML( "\n<!-- HtmlDiff Debug Output:\n" . HTMLDiffer::getDebugOutput() . " End Debug -->" );
- }
-
- wfProfileOut( __METHOD__ );
- }
-
/**
* Show the first revision of an article. Uses normal diff headers in
* contrast to normal "old revision" display style.
array(
'diff' => 'next',
'oldid' => $this->mNewid,
- $this->htmlDiffArgument()
),
array(
'known',
wfProfileOut( __METHOD__ );
}
- function htmlDiffArgument(){
- global $wgEnableHtmlDiff;
- if($wgEnableHtmlDiff){
- if($this->htmldiff){
- return array( 'htmldiff' => 1 );
- }else{
- return array( 'htmldiff' => 0 );
- }
- }else{
- return array();
- }
- }
-
/**
* Get the diff text, send it to $wgOut
* Returns false if the diff could not be generated, otherwise returns true
+++ /dev/null
-<?php
-
-/** Copyright (C) 2008 Guy Van den Broeck <guy@guyvdb.eu>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- * or see http://www.gnu.org/
- *
- * @ingroup DifferenceEngine
- */
-
-/**
- * When detecting the last common parent of two nodes, all results are stored as
- * a LastCommonParentResult.
- */
-class LastCommonParentResult {
-
- // Parent
- public $parent;
-
- // Splitting
- public $splittingNeeded = false;
-
- // Depth
- public $lastCommonParentDepth = -1;
-
- // Index
- public $indexInLastCommonParent = -1;
-}
-
-class Modification{
-
- const NONE = 1;
- const REMOVED = 2;
- const ADDED = 4;
- const CHANGED = 8;
-
- public $type;
-
- public $id = -1;
-
- public $firstOfID = false;
-
- public $changes;
-
- function __construct($type) {
- $this->type = $type;
- }
-
- public static function typeToString($type) {
- switch($type) {
- case self::NONE: return 'none';
- case self::REMOVED: return 'removed';
- case self::ADDED: return 'added';
- case self::CHANGED: return 'changed';
- }
- }
-}
-
-class DomTreeBuilder {
-
- public $textNodes = array();
-
- public $bodyNode;
-
- private $currentParent;
-
- private $newWord = '';
-
- protected $bodyStarted = false;
-
- protected $bodyEnded = false;
-
- private $whiteSpaceBeforeThis = false;
-
- private $lastSibling;
-
- private $notInPre = true;
-
- function __construct() {
- $this->bodyNode = $this->currentParent = new BodyNode();
- $this->lastSibling = new DummyNode();
- }
-
- /**
- * Must be called manually
- */
- public function endDocument() {
- $this->endWord();
- HTMLDiffer::diffDebug( count($this->textNodes) . " text nodes in document.\n" );
- }
-
- public function startElement($parser, $name, /*array*/ $attributes) {
- if (strcasecmp($name, 'body') != 0) {
- HTMLDiffer::diffDebug( "Starting $name node.\n" );
- $this->endWord();
-
- $newNode = new TagNode($this->currentParent, $name, $attributes);
- $this->currentParent->children[] = $newNode;
- $this->currentParent = $newNode;
- $this->lastSibling = new DummyNode();
- if ($this->whiteSpaceBeforeThis && !in_array(strtolower($this->currentParent->qName),TagNode::$blocks)) {
- $this->currentParent->whiteBefore = true;
- }
- $this->whiteSpaceBeforeThis = false;
- if(strcasecmp($name, 'pre') == 0) {
- $this->notInPre = false;
- }
- }
- }
-
- public function endElement($parser, $name) {
- if(strcasecmp($name, 'body') != 0) {
- HTMLDiffer::diffDebug( "Ending $name node.\n");
- if (0 == strcasecmp($name,'img')) {
- // Insert a dummy leaf for the image
- $img = new ImageNode($this->currentParent, $this->currentParent->attributes);
- $this->currentParent->children[] = $img;
- $img->whiteBefore = $this->whiteSpaceBeforeThis;
- $this->lastSibling = $img;
- $this->textNodes[] = $img;
- }
- $this->endWord();
- if (!in_array(strtolower($this->currentParent->qName),TagNode::$blocks)) {
- $this->lastSibling = $this->currentParent;
- } else {
- $this->lastSibling = new DummyNode();
- }
- $this->currentParent = $this->currentParent->parent;
- $this->whiteSpaceBeforeThis = false;
- if (!$this->notInPre && strcasecmp($name, 'pre') == 0) {
- $this->notInPre = true;
- }
- } else {
- $this->endDocument();
- }
- }
-
- const regex = '/([\s\.\,\"\\\'\(\)\?\:\;\!\{\}\-\+\*\=\_\[\]\&\|\$]{1})/';
- const whitespace = '/^[\s]{1}$/';
- const delimiter = '/^[\s\.\,\"\\\'\(\)\?\:\;\!\{\}\-\+\*\=\_\[\]\&\|\$]{1}$/';
-
- public function characters($parser, $data) {
- $matches = preg_split(self::regex, $data, -1, PREG_SPLIT_DELIM_CAPTURE);
-
- foreach($matches as &$word) {
- if (preg_match(self::whitespace, $word) && $this->notInPre) {
- $this->endWord();
- $this->lastSibling->whiteAfter = true;
- $this->whiteSpaceBeforeThis = true;
- } else if (preg_match(self::delimiter, $word)) {
- $this->endWord();
- $textNode = new TextNode($this->currentParent, $word);
- $this->currentParent->children[] = $textNode;
- $textNode->whiteBefore = $this->whiteSpaceBeforeThis;
- $this->whiteSpaceBeforeThis = false;
- $this->lastSibling = $textNode;
- $this->textNodes[] = $textNode;
- } else {
- $this->newWord .= $word;
- }
- }
- }
-
- private function endWord() {
- if ($this->newWord !== '') {
- $node = new TextNode($this->currentParent, $this->newWord);
- $this->currentParent->children[] = $node;
- $node->whiteBefore = $this->whiteSpaceBeforeThis;
- $this->whiteSpaceBeforeThis = false;
- $this->lastSibling = $node;
- $this->textNodes[] = $node;
- $this->newWord = "";
- }
- }
-
- public function getDiffLines() {
- return array_map(array('TextNode','toDiffLine'), $this->textNodes);
- }
-}
-
-class TextNodeDiffer {
-
- private $textNodes;
- public $bodyNode;
-
- private $oldTextNodes;
- private $oldBodyNode;
-
- private $newID = 0;
-
- private $changedID = 0;
-
- private $changedIDUsed = false;
-
- // used to remove the whitespace between a red and green block
- private $whiteAfterLastChangedPart = false;
-
- private $deletedID = 0;
-
- function __construct(DomTreeBuilder $tree, DomTreeBuilder $oldTree) {
- $this->textNodes = $tree->textNodes;
- $this->bodyNode = $tree->bodyNode;
- $this->oldTextNodes = $oldTree->textNodes;
- $this->oldBodyNode = $oldTree->bodyNode;
- }
-
- public function markAsNew($start, $end) {
- if ($end <= $start) {
- return;
- }
-
- if ($this->whiteAfterLastChangedPart) {
- $this->textNodes[$start]->whiteBefore = false;
- }
-
- for ($i = $start; $i < $end; ++$i) {
- $mod = new Modification(Modification::ADDED);
- $mod->id = $this->newID;
- $this->textNodes[$i]->modification = $mod;
- }
- if ($start < $end) {
- $this->textNodes[$start]->modification->firstOfID = true;
- }
- ++$this->newID;
- }
-
- public function handlePossibleChangedPart($leftstart, $leftend, $rightstart, $rightend) {
- $i = $rightstart;
- $j = $leftstart;
-
- if ($this->changedIDUsed) {
- ++$this->changedID;
- $this->changedIDUsed = false;
- }
-
- $changes;
- while ($i < $rightend) {
- $acthis = new AncestorComparator($this->textNodes[$i]->getParentTree());
- $acother = new AncestorComparator($this->oldTextNodes[$j]->getParentTree());
- $result = $acthis->getResult($acother);
- unset($acthis, $acother);
-
- if ( $result ) {
- $mod = new Modification(Modification::CHANGED);
-
- if (!$this->changedIDUsed) {
- $mod->firstOfID = true;
- } else if (!is_null( $result ) && $result !== $this->changes) {
- ++$this->changedID;
- $mod->firstOfID = true;
- }
-
- $mod->changes = $result;
- $mod->id = $this->changedID;
-
- $this->textNodes[$i]->modification = $mod;
- $this->changes = $result;
- $this->changedIDUsed = true;
- } else if ($this->changedIDUsed) {
- ++$this->changedID;
- $this->changedIDUsed = false;
- }
- ++$i;
- ++$j;
- }
- }
-
- public function markAsDeleted($start, $end, $before) {
-
- if ($end <= $start) {
- return;
- }
-
- if ($before > 0 && $this->textNodes[$before - 1]->whiteAfter) {
- $this->whiteAfterLastChangedPart = true;
- } else {
- $this->whiteAfterLastChangedPart = false;
- }
-
- for ($i = $start; $i < $end; ++$i) {
- $mod = new Modification(Modification::REMOVED);
- $mod->id = $this->deletedID;
-
- // oldTextNodes is used here because we're going to move its deleted
- // elements to this tree!
- $this->oldTextNodes[$i]->modification = $mod;
- }
- $this->oldTextNodes[$start]->modification->firstOfID = true;
-
- $root = $this->oldTextNodes[$start]->getLastCommonParent($this->oldTextNodes[$end-1])->parent;
-
- $junk1 = $junk2 = null;
- $deletedNodes = $root->getMinimalDeletedSet($this->deletedID, $junk1, $junk2);
-
- HTMLDiffer::diffDebug( "Minimal set of deleted nodes of size " . count($deletedNodes) . "\n" );
-
- // Set prevLeaf to the leaf after which the old HTML needs to be
- // inserted
- if ($before > 0) {
- $prevLeaf = $this->textNodes[$before - 1];
- }
- // Set nextLeaf to the leaf before which the old HTML needs to be
- // inserted
- if ($before < count($this->textNodes)) {
- $nextLeaf = $this->textNodes[$before];
- }
-
- while (count($deletedNodes) > 0) {
- if (isset($prevLeaf)) {
- $prevResult = $prevLeaf->getLastCommonParent($deletedNodes[0]);
- } else {
- $prevResult = new LastCommonParentResult();
- $prevResult->parent = $this->bodyNode;
- $prevResult->indexInLastCommonParent = -1;
- }
- if (isset($nextleaf)) {
- $nextResult = $nextLeaf->getLastCommonParent($deletedNodes[count($deletedNodes) - 1]);
- } else {
- $nextResult = new LastCommonParentResult();
- $nextResult->parent = $this->bodyNode;
- $nextResult->indexInLastCommonParent = $this->bodyNode->getNbChildren();
- }
-
- if ($prevResult->lastCommonParentDepth == $nextResult->lastCommonParentDepth) {
- // We need some metric to choose which way to add-...
- if ($deletedNodes[0]->parent === $deletedNodes[count($deletedNodes) - 1]->parent
- && $prevResult->parent === $nextResult->parent) {
- // The difference is not in the parent
- $prevResult->lastCommonParentDepth = $prevResult->lastCommonParentDepth + 1;
- } else {
- // The difference is in the parent, so compare them
- // now THIS is tricky
- $distancePrev = $deletedNodes[0]->parent->getMatchRatio($prevResult->parent);
- $distanceNext = $deletedNodes[count($deletedNodes) - 1]->parent->getMatchRatio($nextResult->parent);
-
- if ($distancePrev <= $distanceNext) {
- $prevResult->lastCommonParentDepth = $prevResult->lastCommonParentDepth + 1;
- } else {
- $nextResult->lastCommonParentDepth = $nextResult->lastCommonParentDepth + 1;
- }
- }
-
- }
-
- if ($prevResult->lastCommonParentDepth > $nextResult->lastCommonParentDepth) {
- // Inserting at the front
- if ($prevResult->splittingNeeded) {
- $prevLeaf->parent->splitUntil($prevResult->parent, $prevLeaf, true);
- }
- $prevLeaf = $deletedNodes[0]->copyTree();
- unset($deletedNodes[0]);
- $deletedNodes = array_values($deletedNodes);
- $prevLeaf->setParent($prevResult->parent);
- $prevResult->parent->addChildAbsolute($prevLeaf,$prevResult->indexInLastCommonParent + 1);
- } else if ($prevResult->lastCommonParentDepth < $nextResult->lastCommonParentDepth) {
- // Inserting at the back
- if ($nextResult->splittingNeeded) {
- $splitOccured = $nextLeaf->parent->splitUntil($nextResult->parent, $nextLeaf, false);
- if ($splitOccured) {
- // The place where to insert is shifted one place to the
- // right
- $nextResult->indexInLastCommonParent = $nextResult->indexInLastCommonParent + 1;
- }
- }
- $nextLeaf = $deletedNodes[count(deletedNodes) - 1]->copyTree();
- unset($deletedNodes[count(deletedNodes) - 1]);
- $deletedNodes = array_values($deletedNodes);
- $nextLeaf->setParent($nextResult->parent);
- $nextResult->parent->addChildAbsolute($nextLeaf,$nextResult->indexInLastCommonParent);
- }
- }
- ++$this->deletedID;
- }
-
- public function expandWhiteSpace() {
- $this->bodyNode->expandWhiteSpace();
- }
-
- public function lengthNew(){
- return count($this->textNodes);
- }
-
- public function lengthOld(){
- return count($this->oldTextNodes);
- }
-}
-
-class HTMLDiffer {
-
- private $output;
- private static $debug = '';
-
- function __construct($output) {
- $this->output = $output;
- }
-
- function htmlDiff($from, $to) {
- wfProfileIn( __METHOD__ );
- // Create an XML parser
- $xml_parser = xml_parser_create('');
-
- $domfrom = new DomTreeBuilder();
-
- // Set the functions to handle opening and closing tags
- xml_set_element_handler($xml_parser, array($domfrom, "startElement"), array($domfrom, "endElement"));
-
- // Set the function to handle blocks of character data
- xml_set_character_data_handler($xml_parser, array($domfrom, "characters"));
-
- HTMLDiffer::diffDebug( "Parsing " . strlen($from) . " characters worth of HTML\n" );
- if (!xml_parse($xml_parser, '<?xml version="1.0" encoding="UTF-8"?>'.Sanitizer::hackDocType().'<body>', false)
- || !xml_parse($xml_parser, $from, false)
- || !xml_parse($xml_parser, '</body>', true)){
- $error = xml_error_string(xml_get_error_code($xml_parser));
- $line = xml_get_current_line_number($xml_parser);
- HTMLDiffer::diffDebug( "XML error: $error at line $line\n" );
- }
- xml_parser_free($xml_parser);
- unset($from);
-
- $xml_parser = xml_parser_create('');
-
- $domto = new DomTreeBuilder();
-
- // Set the functions to handle opening and closing tags
- xml_set_element_handler($xml_parser, array($domto, "startElement"), array($domto, "endElement"));
-
- // Set the function to handle blocks of character data
- xml_set_character_data_handler($xml_parser, array($domto, "characters"));
-
- HTMLDiffer::diffDebug( "Parsing " . strlen($to) . " characters worth of HTML\n" );
- if (!xml_parse($xml_parser, '<?xml version="1.0" encoding="UTF-8"?>'.Sanitizer::hackDocType().'<body>', false)
- || !xml_parse($xml_parser, $to, false)
- || !xml_parse($xml_parser, '</body>', true)){
- $error = xml_error_string(xml_get_error_code($xml_parser));
- $line = xml_get_current_line_number($xml_parser);
- HTMLDiffer::diffDebug( "XML error: $error at line $line\n" );
- }
- xml_parser_free($xml_parser);
- unset($to);
-
- $diffengine = new WikiDiff3();
- $differences = $this->preProcess($diffengine->diff_range($domfrom->getDiffLines(), $domto->getDiffLines()));
- unset($xml_parser, $diffengine);
-
- $domdiffer = new TextNodeDiffer($domto, $domfrom);
-
- $currentIndexLeft = 0;
- $currentIndexRight = 0;
- foreach ($differences as &$d) {
- if ($d->leftstart > $currentIndexLeft) {
- $domdiffer->handlePossibleChangedPart($currentIndexLeft, $d->leftstart,
- $currentIndexRight, $d->rightstart);
- }
- if ($d->leftlength > 0) {
- $domdiffer->markAsDeleted($d->leftstart, $d->leftend, $d->rightstart);
- }
- $domdiffer->markAsNew($d->rightstart, $d->rightend);
-
- $currentIndexLeft = $d->leftend;
- $currentIndexRight = $d->rightend;
- }
- $oldLength = $domdiffer->lengthOld();
- if ($currentIndexLeft < $oldLength) {
- $domdiffer->handlePossibleChangedPart($currentIndexLeft, $oldLength, $currentIndexRight, $domdiffer->lengthNew());
- }
- $domdiffer->expandWhiteSpace();
- $output = new HTMLOutput('htmldiff', $this->output);
- $output->parse($domdiffer->bodyNode);
- wfProfileOut( __METHOD__ );
- }
-
- private function preProcess(/*array*/ $differences) {
- $newRanges = array();
-
- $nbDifferences = count($differences);
- for ($i = 0; $i < $nbDifferences; ++$i) {
- $leftStart = $differences[$i]->leftstart;
- $leftEnd = $differences[$i]->leftend;
- $rightStart = $differences[$i]->rightstart;
- $rightEnd = $differences[$i]->rightend;
-
- $leftLength = $leftEnd - $leftStart;
- $rightLength = $rightEnd - $rightStart;
-
- while ($i + 1 < $nbDifferences && self::score($leftLength,
- $differences[$i + 1]->leftlength,
- $rightLength,
- $differences[$i + 1]->rightlength)
- > ($differences[$i + 1]->leftstart - $leftEnd)) {
- $leftEnd = $differences[$i + 1]->leftend;
- $rightEnd = $differences[$i + 1]->rightend;
- $leftLength = $leftEnd - $leftStart;
- $rightLength = $rightEnd - $rightStart;
- ++$i;
- }
- $newRanges[] = new RangeDifference($leftStart, $leftEnd, $rightStart, $rightEnd);
- }
- return $newRanges;
- }
-
- /**
- * Heuristic to merge differences for readability.
- */
- public static function score($ll, $nll, $rl, $nrl) {
- if (($ll == 0 && $nll == 0)
- || ($rl == 0 && $nrl == 0)) {
- return 0;
- }
- $numbers = array($ll, $nll, $rl, $nrl);
- $d = 0;
- foreach ($numbers as &$number) {
- while ($number > 3) {
- $d += 3;
- $number -= 3;
- $number *= 0.5;
- }
- $d += $number;
-
- }
- return $d / (1.5 * count($numbers));
- }
-
- /**
- * Add to debug output
- * @param string $str Debug output
- */
- public static function diffDebug( $str ) {
- self :: $debug .= $str;
- }
-
- /**
- * Get debug output
- * @return string
- */
- public static function getDebugOutput() {
- return self :: $debug;
- }
-
-}
-
-class TextOnlyComparator {
-
- public $leafs = array();
-
- function _construct(TagNode $tree) {
- $this->addRecursive($tree);
- $this->leafs = array_map(array('TextNode','toDiffLine'), $this->leafs);
- }
-
- private function addRecursive(TagNode $tree) {
- foreach ($tree->children as &$child) {
- if ($child instanceof TagNode) {
- $this->addRecursive($child);
- } else if ($child instanceof TextNode) {
- $this->leafs[] = $node;
- }
- }
- }
-
- public function getMatchRatio(TextOnlyComparator $other) {
- $nbOthers = count($other->leafs);
- $nbThis = count($this->leafs);
- if($nbOthers == 0 || $nbThis == 0){
- return -log(0);
- }
-
- $diffengine = new WikiDiff3(25000, 1.35);
- $diffengine->diff($this->leafs, $other->leafs);
-
- $lcsLength = $diffengine->getLcsLength();
-
- $distanceThis = $nbThis-$lcsLength;
-
- return (2.0 - $lcsLength/$nbOthers - $lcsLength/$nbThis) / 2.0;
- }
-}
-
-/**
- * A comparator used when calculating the difference in ancestry of two Nodes.
- */
-class AncestorComparator {
-
- public $ancestors;
- public $ancestorsText;
-
- function __construct(/*array*/ $ancestors) {
- $this->ancestors = $ancestors;
- $this->ancestorsText = array_map(array('TagNode','toDiffLine'), $ancestors);
- }
-
- public $compareTxt = "";
-
- public function getResult(AncestorComparator $other) {
-
- $diffengine = new WikiDiff3(10000, 1.35);
- $differences = $diffengine->diff_range($other->ancestorsText,$this->ancestorsText);
-
- if (count($differences) == 0){
- return null;
- }
- $changeTxt = new ChangeTextGenerator($this, $other);
-
- return $changeTxt->getChanged($differences)->toString();;
- }
-}
-
-class ChangeTextGenerator {
-
- private $ancestorComparator;
- private $other;
-
- private $factory;
-
- function __construct(AncestorComparator $ancestorComparator, AncestorComparator $other) {
- $this->ancestorComparator = $ancestorComparator;
- $this->other = $other;
- $this->factory = new TagToStringFactory();
- }
-
- public function getChanged(/*array*/ $differences) {
- $txt = new ChangeText;
- $rootlistopened = false;
- if (count($differences) > 1) {
- $txt->addHtml('<ul class="changelist">');
- $rootlistopened = true;
- }
- $nbDifferences = count($differences);
- for ($j = 0; $j < $nbDifferences; ++$j) {
- $d = $differences[$j];
- $lvl1listopened = false;
- if ($rootlistopened) {
- $txt->addHtml('<li>');
- }
- if ($d->leftlength + $d->rightlength > 1) {
- $txt->addHtml('<ul class="changelist">');
- $lvl1listopened = true;
- }
- // left are the old ones
- for ($i = $d->leftstart; $i < $d->leftend; ++$i) {
- if ($lvl1listopened){
- $txt->addHtml('<li>');
- }
- // add a bullet for a old tag
- $this->addTagOld($txt, $this->other->ancestors[$i]);
- if ($lvl1listopened){
- $txt->addHtml('</li>');
- }
- }
- // right are the new ones
- for ($i = $d->rightstart; $i < $d->rightend; ++$i) {
- if ($lvl1listopened){
- $txt->addHtml('<li>');
- }
- // add a bullet for a new tag
- $this->addTagNew($txt, $this->ancestorComparator->ancestors[$i]);
-
- if ($lvl1listopened){
- $txt->addHtml('</li>');
- }
- }
- if ($lvl1listopened) {
- $txt->addHtml('</ul>');
- }
- if ($rootlistopened) {
- $txt->addHtml('</li>');
- }
- }
- if ($rootlistopened) {
- $txt->addHtml('</ul>');
- }
- return $txt;
- }
-
- private function addTagOld(ChangeText $txt, TagNode $ancestor) {
- $this->factory->create($ancestor)->getRemovedDescription($txt);
- }
-
- private function addTagNew(ChangeText $txt, TagNode $ancestor) {
- $this->factory->create($ancestor)->getAddedDescription($txt);
- }
-}
-
-class ChangeText {
-
- private $txt = "";
-
- public function addHtml($s) {
- $this->txt .= $s;
- }
-
- public function toString() {
- return $this->txt;
- }
-}
-
-class TagToStringFactory {
-
- private static $containerTags = array('html', 'body', 'p', 'blockquote',
- 'h1', 'h2', 'h3', 'h4', 'h5', 'pre', 'div', 'ul', 'ol', 'li',
- 'table', 'tbody', 'tr', 'td', 'th', 'br', 'hr', 'code', 'dl',
- 'dt', 'dd', 'input', 'form', 'img', 'span', 'a');
-
- private static $styleTags = array('i', 'b', 'strong', 'em', 'font',
- 'big', 'del', 'tt', 'sub', 'sup', 'strike');
-
- const MOVED = 1;
- const STYLE = 2;
- const UNKNOWN = 4;
-
- public function create(TagNode $node) {
- $sem = $this->getChangeSemantic($node->qName);
- if (strcasecmp($node->qName,'a') == 0) {
- return new AnchorToString($node, $sem);
- }
- if (strcasecmp($node->qName,'img') == 0) {
- return new NoContentTagToString($node, $sem);
- }
- return new TagToString($node, $sem);
- }
-
- protected function getChangeSemantic($qname) {
- if (in_array(strtolower($qname),self::$containerTags)) {
- return self::MOVED;
- }
- if (in_array(strtolower($qname),self::$styleTags)) {
- return self::STYLE;
- }
- return self::UNKNOWN;
- }
-}
-
-class TagToString {
-
- protected $node;
-
- protected $sem;
-
- function __construct(TagNode $node, $sem) {
- $this->node = $node;
- $this->sem = $sem;
- }
-
- public function getRemovedDescription(ChangeText $txt) {
- $tagDescription = wfMsgExt('diff-' . $this->node->qName, 'parseinline' );
- if( wfEmptyMsg( 'diff-' . $this->node->qName, $tagDescription ) ){
- $tagDescription = "<" . $this->node->qName . ">";
- }
- if ($this->sem == TagToStringFactory::MOVED) {
- $txt->addHtml( wfMsgExt( 'diff-movedoutof', 'parseinline', $tagDescription ) );
- } else if ($this->sem == TagToStringFactory::STYLE) {
- $txt->addHtml( wfMsgExt( 'diff-styleremoved' , 'parseinline', $tagDescription ) );
- } else {
- $txt->addHtml( wfMsgExt( 'diff-removed' , 'parseinline', $tagDescription ) );
- }
- $this->addAttributes($txt, $this->node->attributes);
- $txt->addHtml('.');
- }
-
- public function getAddedDescription(ChangeText $txt) {
- $tagDescription = wfMsgExt('diff-' . $this->node->qName, 'parseinline' );
- if( wfEmptyMsg( 'diff-' . $this->node->qName, $tagDescription ) ){
- $tagDescription = "<" . $this->node->qName . ">";
- }
- if ($this->sem == TagToStringFactory::MOVED) {
- $txt->addHtml( wfMsgExt( 'diff-movedto' , 'parseinline', $tagDescription) );
- } else if ($this->sem == TagToStringFactory::STYLE) {
- $txt->addHtml( wfMsgExt( 'diff-styleadded', 'parseinline', $tagDescription ) );
- } else {
- $txt->addHtml( wfMsgExt( 'diff-added', 'parseinline', $tagDescription ) );
- }
- $this->addAttributes($txt, $this->node->attributes);
- $txt->addHtml('.');
- }
-
- protected function addAttributes(ChangeText $txt, array $attributes) {
- if (count($attributes) < 1) {
- return;
- }
- $firstOne = true;
- $nbAttributes_min_1 = count($attributes)-1;
- $keys = array_keys($attributes);
- for ($i=0;$i<$nbAttributes_min_1;$i++) {
- $key = $keys[$i];
- $attr = $attributes[$key];
- if($firstOne) {
- $firstOne = false;
- $txt->addHtml( wfMsgExt('diff-with', 'escapenoentities', $this->translateArgument($key), htmlspecialchars($attr) ) );
- continue;
- }
- $txt->addHtml( wfMsgExt( 'comma-separator', 'escapenoentities' ) .
- wfMsgExt( 'diff-with-additional', 'escapenoentities',
- $this->translateArgument( $key ), htmlspecialchars( $attr ) )
- );
- }
-
- if ($nbAttributes_min_1 > 0) {
- $txt->addHtml( wfMsgExt( 'diff-with-final', 'escapenoentities',
- $this->translateArgument($keys[$nbAttributes_min_1]),
- htmlspecialchars($attributes[$keys[$nbAttributes_min_1]]) ) );
- }
- }
-
- protected function translateArgument($name) {
- $translation = wfMsgExt('diff-' . $name, 'parseinline' );
- if ( wfEmptyMsg( 'diff-' . $name, $translation ) ) {
- $translation = "<" . $name . ">";;
- }
- return htmlspecialchars( $translation );
- }
-}
-
-class NoContentTagToString extends TagToString {
-
- function __construct(TagNode $node, $sem) {
- parent::__construct($node, $sem);
- }
-
- public function getAddedDescription(ChangeText $txt) {
- $tagDescription = wfMsgExt('diff-' . $this->node->qName, 'parseinline' );
- if( wfEmptyMsg( 'diff-' . $this->node->qName, $tagDescription ) ){
- $tagDescription = "<" . $this->node->qName . ">";
- }
- $txt->addHtml( wfMsgExt('diff-changedto', 'parseinline', $tagDescription ) );
- $this->addAttributes($txt, $this->node->attributes);
- $txt->addHtml('.');
- }
-
- public function getRemovedDescription(ChangeText $txt) {
- $tagDescription = wfMsgExt('diff-' . $this->node->qName, 'parseinline' );
- if( wfEmptyMsg( 'diff-' . $this->node->qName, $tagDescription ) ){
- $tagDescription = "<" . $this->node->qName . ">";
- }
- $txt->addHtml( wfMsgExt('diff-changedfrom', 'parseinline', $tagDescription ) );
- $this->addAttributes($txt, $this->node->attributes);
- $txt->addHtml('.');
- }
-}
-
-class AnchorToString extends TagToString {
-
- function __construct(TagNode $node, $sem) {
- parent::__construct($node, $sem);
- }
-
- protected function addAttributes(ChangeText $txt, array $attributes) {
- if (array_key_exists('href', $attributes)) {
- $txt->addHtml(' ' . wfMsgExt( 'diff-withdestination', 'parseinline', htmlspecialchars($attributes['href']) ) );
- unset($attributes['href']);
- }
- parent::addAttributes($txt, $attributes);
- }
-}
-
-/**
- * Takes a branch root and creates an HTML file for it.
- */
-class HTMLOutput{
-
- private $prefix;
- private $handler;
-
- function __construct($prefix, $handler) {
- $this->prefix = $prefix;
- $this->handler = $handler;
- }
-
- public function parse(TagNode $node) {
- $handler = &$this->handler;
-
- if (strcasecmp($node->qName, 'img') != 0 && strcasecmp($node->qName, 'body') != 0) {
- $handler->startElement($node->qName, $node->attributes);
- }
-
- $newStarted = false;
- $remStarted = false;
- $changeStarted = false;
- $changeTXT = '';
-
- foreach ($node->children as &$child) {
- if ($child instanceof TagNode) {
- if ($newStarted) {
- $handler->endElement('span');
- $newStarted = false;
- } else if ($changeStarted) {
- $handler->endElement('span');
- $changeStarted = false;
- } else if ($remStarted) {
- $handler->endElement('span');
- $remStarted = false;
- }
- $this->parse($child);
- } else if ($child instanceof TextNode) {
- $mod = $child->modification;
-
- if ($newStarted && ($mod->type != Modification::ADDED || $mod->firstOfID)) {
- $handler->endElement('span');
- $newStarted = false;
- } else if ($changeStarted && ($mod->type != Modification::CHANGED
- || $mod->changes != $changeTXT || $mod->firstOfID)) {
- $handler->endElement('span');
- $changeStarted = false;
- } else if ($remStarted && ($mod->type != Modification::REMOVED || $mod ->firstOfID)) {
- $handler->endElement('span');
- $remStarted = false;
- }
-
- // no else because a removed part can just be closed and a new
- // part can start
- if (!$newStarted && $mod->type == Modification::ADDED) {
- $attrs = array('class' => 'diff-html-added');
- if ($mod->firstOfID) {
- $attrs['id'] = "added-{$this->prefix}-{$mod->id}";
- }
- $handler->startElement('span', $attrs);
- $newStarted = true;
- } else if (!$changeStarted && $mod->type == Modification::CHANGED) {
- $attrs = array('class' => 'diff-html-changed');
- if ($mod->firstOfID) {
- $attrs['id'] = "changed-{$this->prefix}-{$mod->id}";
- }
- $handler->startElement('span', $attrs);
-
- //tooltip
- $handler->startElement('span', array('class' => 'tip'));
- $handler->html($mod->changes);
- $handler->endElement('span');
-
- $changeStarted = true;
- $changeTXT = $mod->changes;
- } else if (!$remStarted && $mod->type == Modification::REMOVED) {
- $attrs = array('class'=>'diff-html-removed');
- if ($mod->firstOfID) {
- $attrs['id'] = "removed-{$this->prefix}-{$mod->id}";
- }
- $handler->startElement('span', $attrs);
- $remStarted = true;
- }
-
- $chars = $child->text;
-
- if ($child instanceof ImageNode) {
- $this->writeImage($child);
- } else {
- $handler->characters($chars);
- }
- }
- }
-
- if ($newStarted) {
- $handler->endElement('span');
- $newStarted = false;
- } else if ($changeStarted) {
- $handler->endElement('span');
- $changeStarted = false;
- } else if ($remStarted) {
- $handler->endElement('span');
- $remStarted = false;
- }
-
- if (strcasecmp($node->qName, 'img') != 0
- && strcasecmp($node->qName, 'body') != 0) {
- $handler->endElement($node->qName);
- }
- }
-
- private function writeImage(ImageNode $imgNode) {
- $attrs = $imgNode->attributes;
- $this->handler->startElement('img', $attrs);
- $this->handler->endElement('img');
- }
-}
-
-class DelegatingContentHandler {
-
- private $delegate;
-
- function __construct($delegate) {
- $this->delegate = $delegate;
- }
-
- function startElement($qname, /*array*/ $arguments) {
- $this->delegate->addHtml(Xml::openElement($qname, $arguments));
- }
-
- function endElement($qname){
- $this->delegate->addHtml(Xml::closeElement($qname));
- }
-
- function characters($chars){
- $this->delegate->addHtml(htmlspecialchars($chars));
- }
-
- function html($html){
- $this->delegate->addHtml($html);
- }
-}
+++ /dev/null
-<?php
-
-/** Copyright (C) 2008 Guy Van den Broeck <guy@guyvdb.eu>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- * or see http://www.gnu.org/
- *
- */
-
-/**
- * Any element in the DOM tree of an HTML document.
- * @ingroup DifferenceEngine
- */
-class Node {
-
- public $parent;
-
- protected $parentTree;
-
- public $whiteBefore = false;
-
- public $whiteAfter = false;
-
- function __construct($parent) {
- $this->parent = $parent;
- }
-
- public function getParentTree() {
- if (!isset($this->parentTree)) {
- if (!is_null($this->parent)) {
- $this->parentTree = $this->parent->getParentTree();
- $this->parentTree[] = $this->parent;
- } else {
- $this->parentTree = array();
- }
- }
- return $this->parentTree;
- }
-
- public function getLastCommonParent(Node $other) {
- $result = new LastCommonParentResult();
-
- $myParents = $this->getParentTree();
- $otherParents = $other->getParentTree();
-
- $i = 1;
- $isSame = true;
- $nbMyParents = count($myParents);
- $nbOtherParents = count($otherParents);
- while ($isSame && $i < $nbMyParents && $i < $nbOtherParents) {
- if (!$myParents[$i]->openingTag === $otherParents[$i]->openingTag) {
- $isSame = false;
- } else {
- // After a while, the index i-1 must be the last common parent
- $i++;
- }
- }
-
- $result->lastCommonParentDepth = $i - 1;
- $result->parent = $myParents[$i - 1];
-
- if (!$isSame || $nbMyParents > $nbOtherParents) {
- // Not all tags matched, or all tags matched but
- // there are tags left in this tree
- $result->indexInLastCommonParent = $myParents[$i - 1]->getIndexOf($myParents[$i]);
- $result->splittingNeeded = true;
- } else if ($nbMyParents <= $nbOtherParents) {
- $result->indexInLastCommonParent = $myParents[$i - 1]->getIndexOf($this);
- }
- return $result;
- }
-
- public function setParent($parent) {
- $this->parent = $parent;
- unset($this->parentTree);
- }
-
- public function inPre() {
- $tree = $this->getParentTree();
- foreach ($tree as &$ancestor) {
- if ($ancestor->isPre()) {
- return true;
- }
- }
- return false;
- }
-}
-
-/**
- * Node that can contain other nodes. Represents an HTML tag.
- * @ingroup DifferenceEngine
- */
-class TagNode extends Node {
-
- public $children = array();
-
- public $qName;
-
- public $attributes = array();
-
- public $openingTag;
-
- function __construct($parent, $qName, /*array*/ $attributes) {
- parent::__construct($parent);
- $this->qName = strtolower($qName);
- foreach($attributes as $key => &$value){
- $this->attributes[strtolower($key)] = $value;
- }
- return $this->openingTag = Xml::openElement($this->qName, $this->attributes);
- }
-
- public function addChildAbsolute(Node $node, $index) {
- array_splice($this->children, $index, 0, array($node));
- }
-
- public function getIndexOf(Node $child) {
- // don't trust array_search with objects
- foreach ($this->children as $key => &$value){
- if ($value === $child) {
- return $key;
- }
- }
- return null;
- }
-
- public function getNbChildren() {
- return count($this->children);
- }
-
- public function getMinimalDeletedSet($id, &$allDeleted, &$somethingDeleted) {
- $nodes = array();
-
- $allDeleted = false;
- $somethingDeleted = false;
- $hasNonDeletedDescendant = false;
-
- if (empty($this->children)) {
- return $nodes;
- }
-
- foreach ($this->children as &$child) {
- $allDeleted_local = false;
- $somethingDeleted_local = false;
- $childrenChildren = $child->getMinimalDeletedSet($id, $allDeleted_local, $somethingDeleted_local);
- if ($somethingDeleted_local) {
- $nodes = array_merge($nodes, $childrenChildren);
- $somethingDeleted = true;
- }
- if (!$allDeleted_local) {
- $hasNonDeletedDescendant = true;
- }
- }
- if (!$hasNonDeletedDescendant) {
- $nodes = array($this);
- $allDeleted = true;
- }
- return $nodes;
- }
-
- public function splitUntil(TagNode $parent, Node $split, $includeLeft) {
- $splitOccured = false;
- if ($parent !== $this) {
- $part1 = new TagNode(null, $this->qName, $this->attributes);
- $part2 = new TagNode(null, $this->qName, $this->attributes);
- $part1->setParent($this->parent);
- $part2->setParent($this->parent);
-
- $onSplit = false;
- $pastSplit = false;
- foreach ($this->children as &$child)
- {
- if ($child === $split) {
- $onSplit = true;
- }
- if(!$pastSplit || ($onSplit && $includeLeft)) {
- $child->setParent($part1);
- $part1->children[] = $child;
- } else {
- $child->setParent($part2);
- $part2->children[] = $child;
- }
- if ($onSplit) {
- $onSplit = false;
- $pastSplit = true;
- }
- }
- $myindexinparent = $this->parent->getIndexOf($this);
- if (!empty($part1->children)) {
- $this->parent->addChildAbsolute($part1, $myindexinparent);
- }
- if (!empty($part2->children)) {
- $this->parent->addChildAbsolute($part2, $myindexinparent);
- }
- if (!empty($part1->children) && !empty($part2->children)) {
- $splitOccured = true;
- }
-
- $this->parent->removeChild($myindexinparent);
-
- if ($includeLeft) {
- $this->parent->splitUntil($parent, $part1, $includeLeft);
- } else {
- $this->parent->splitUntil($parent, $part2, $includeLeft);
- }
- }
- return $splitOccured;
-
- }
-
- private function removeChild($index) {
- unset($this->children[$index]);
- $this->children = array_values($this->children);
- }
-
- public static $blocks = array('html', 'body','p','blockquote', 'h1',
- 'h2', 'h3', 'h4', 'h5', 'pre', 'div', 'ul', 'ol', 'li', 'table',
- 'tbody', 'tr', 'td', 'th', 'br');
-
- public function copyTree() {
- $newThis = new TagNode(null, $this->qName, $this->attributes);
- $newThis->whiteBefore = $this->whiteBefore;
- $newThis->whiteAfter = $this->whiteAfter;
- foreach ($this->children as &$child) {
- $newChild = $child->copyTree();
- $newChild->setParent($newThis);
- $newThis->children[] = $newChild;
- }
- return $newThis;
- }
-
- public function getMatchRatio(TagNode $other) {
- $txtComp = new TextOnlyComparator($other);
- return $txtComp->getMatchRatio(new TextOnlyComparator($this));
- }
-
- public function expandWhiteSpace() {
- $shift = 0;
- $spaceAdded = false;
-
- $nbOriginalChildren = $this->getNbChildren();
- for ($i = 0; $i < $nbOriginalChildren; ++$i) {
- $child = $this->children[$i + $shift];
-
- if ($child instanceof TagNode) {
- if (!$child->isPre()) {
- $child->expandWhiteSpace();
- }
- }
- if (!$spaceAdded && $child->whiteBefore) {
- $ws = new WhiteSpaceNode(null, ' ', $child->getLeftMostChild());
- $ws->setParent($this);
- $this->addChildAbsolute($ws,$i + ($shift++));
- }
- if ($child->whiteAfter) {
- $ws = new WhiteSpaceNode(null, ' ', $child->getRightMostChild());
- $ws->setParent($this);
- $this->addChildAbsolute($ws,$i + 1 + ($shift++));
- $spaceAdded = true;
- } else {
- $spaceAdded = false;
- }
-
- }
- }
-
- public function getLeftMostChild() {
- if (empty($this->children)) {
- return $this;
- }
- return $this->children[0]->getLeftMostChild();
- }
-
- public function getRightMostChild() {
- if (empty($this->children)) {
- return $this;
- }
- return $this->children[$this->getNbChildren() - 1]->getRightMostChild();
- }
-
- public function isPre() {
- return 0 == strcasecmp($this->qName,'pre');
- }
-
- public static function toDiffLine(TagNode $node) {
- return $node->openingTag;
- }
-}
-
-/**
- * Represents a piece of text in the HTML file.
- * @ingroup DifferenceEngine
- */
-class TextNode extends Node {
-
- public $text;
-
- public $modification;
-
- function __construct($parent, $text) {
- parent::__construct($parent);
- $this->modification = new Modification(Modification::NONE);
- $this->text = $text;
- }
-
- public function copyTree() {
- $clone = clone $this;
- $clone->setParent(null);
- return $clone;
- }
-
- public function getLeftMostChild() {
- return $this;
- }
-
- public function getRightMostChild() {
- return $this;
- }
-
- public function getMinimalDeletedSet($id, &$allDeleted, &$somethingDeleted) {
- if ($this->modification->type == Modification::REMOVED
- && $this->modification->id == $id){
- $somethingDeleted = true;
- $allDeleted = true;
- return array($this);
- }
- return array();
- }
-
- public function isSameText($other) {
- if (is_null($other) || ! $other instanceof TextNode) {
- return false;
- }
- return str_replace('\n', ' ',$this->text) === str_replace('\n', ' ',$other->text);
- }
-
- public static function toDiffLine(TextNode $node) {
- return str_replace('\n', ' ',$node->text);
- }
-}
-
-/**
- * @todo Document
- * @ingroup DifferenceEngine
- */
-class WhiteSpaceNode extends TextNode {
-
- function __construct($parent, $s, Node $like = null) {
- parent::__construct($parent, $s);
- if(!is_null($like) && $like instanceof TextNode) {
- $newModification = clone $like->modification;
- $newModification->firstOfID = false;
- $this->modification = $newModification;
- }
- }
-}
-
-/**
- * Represents the root of a HTML document.
- * @ingroup DifferenceEngine
- */
-class BodyNode extends TagNode {
-
- function __construct() {
- parent::__construct(null, 'body', array());
- }
-
- public function copyTree() {
- $newThis = new BodyNode();
- foreach ($this->children as &$child) {
- $newChild = $child->copyTree();
- $newChild->setParent($newThis);
- $newThis->children[] = $newChild;
- }
- return $newThis;
- }
-
- public function getMinimalDeletedSet($id, &$allDeleted, &$somethingDeleted) {
- $nodes = array();
- foreach ($this->children as &$child) {
- $childrenChildren = $child->getMinimalDeletedSet($id,
- $allDeleted, $somethingDeleted);
- $nodes = array_merge($nodes, $childrenChildren);
- }
- return $nodes;
- }
-
-}
-
-/**
- * Represents an image in HTML. Even though images do not contain any text they
- * are independent visible objects on the page. They are logically a TextNode.
- * @ingroup DifferenceEngine
- */
-class ImageNode extends TextNode {
-
- public $attributes;
-
- function __construct(TagNode $parent, /*array*/ $attrs) {
- if(!array_key_exists('src', $attrs)) {
- HTMLDiffer::diffDebug( "Image without a source\n" );
- parent::__construct($parent, '<img></img>');
- }else{
- parent::__construct($parent, '<img>' . strtolower($attrs['src']) . '</img>');
- }
- $this->attributes = $attrs;
- }
-
- public function isSameText($other) {
- if (is_null($other) || ! $other instanceof ImageNode) {
- return false;
- }
- return $this->text === $other->text;
- }
-
-}
-
-/**
- * No-op node
- * @ingroup DifferenceEngine
- */
-class DummyNode extends Node {
-
- function __construct() {
- // no op
- }
-
-}
dépôts / lhc / web / wiklou.git / commitdiff