731 lines
19 KiB
PHP
731 lines
19 KiB
PHP
<?php
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/**
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* implements Special:Import
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* @ingroup SpecialPage
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*/
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class WikiImporter {
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private $reader = null;
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private $mLogItemCallback, $mUploadCallback, $mRevisionCallback, $mPageCallback;
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private $mSiteInfoCallback, $mTargetNamespace, $mPageOutCallback;
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private $mDebug;
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/**
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* Creates an ImportXMLReader drawing from the source provided
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*/
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function __construct( $source ) {
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$this->reader = new XMLReader2();
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stream_wrapper_register( 'uploadsource', 'UploadSourceAdapter' );
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$id = UploadSourceAdapter::registerSource( $source );
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$this->reader->open( "uploadsource://$id" );
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// Default callbacks
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$this->setRevisionCallback( array( $this, "importRevision" ) );
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$this->setUploadCallback( array( $this, 'importUpload' ) );
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$this->setLogItemCallback( array( $this, 'importLogItem' ) );
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$this->setPageOutCallback( array( $this, 'finishImportPage' ) );
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}
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private function throwXmlError( $err ) {
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$this->debug( "FAILURE: $err" );
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wfDebug( "WikiImporter XML error: $err\n" );
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}
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private function debug( $data ) {
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if( $this->mDebug ) {
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wfDebug( "IMPORT: $data\n" );
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}
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}
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private function warn( $data ) {
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wfDebug( "IMPORT: $data\n" );
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}
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private function notice( $data ) {
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global $wgCommandLineMode;
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if( $wgCommandLineMode ) {
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print "$data\n";
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} else {
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global $wgOut;
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$wgOut->addHTML( "<li>" . htmlspecialchars( $data ) . "</li>\n" );
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}
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}
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/**
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* Set debug mode...
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*/
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function setDebug( $debug ) {
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$this->mDebug = $debug;
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}
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/**
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* Sets the action to perform as each new page in the stream is reached.
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* @param $callback callback
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* @return callback
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*/
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public function setPageCallback( $callback ) {
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$previous = $this->mPageCallback;
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$this->mPageCallback = $callback;
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return $previous;
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}
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/**
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* Sets the action to perform as each page in the stream is completed.
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* Callback accepts the page title (as a Title object), a second object
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* with the original title form (in case it's been overridden into a
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* local namespace), and a count of revisions.
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*
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* @param $callback callback
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* @return callback
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*/
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public function setPageOutCallback( $callback ) {
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$previous = $this->mPageOutCallback;
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$this->mPageOutCallback = $callback;
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return $previous;
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}
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/**
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* Sets the action to perform as each page revision is reached.
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* @param $callback callback
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* @return callback
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*/
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public function setRevisionCallback( $callback ) {
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$previous = $this->mRevisionCallback;
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$this->mRevisionCallback = $callback;
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return $previous;
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}
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/**
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* Sets the action to perform as each file upload version is reached.
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* @param $callback callback
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* @return callback
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*/
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public function setUploadCallback( $callback ) {
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$previous = $this->mUploadCallback;
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$this->mUploadCallback = $callback;
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return $previous;
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}
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/**
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* Sets the action to perform as each log item reached.
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* @param $callback callback
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* @return callback
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*/
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public function setLogItemCallback( $callback ) {
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$previous = $this->mLogItemCallback;
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$this->mLogItemCallback = $callback;
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return $previous;
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}
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/**
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* Sets the action to perform when site info is encountered
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* @param $callback callback
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* @return callback
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*/
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public function setSiteInfoCallback( $callback ) {
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$previous = $this->mSiteInfoCallback;
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$this->mSiteInfoCallback = $callback;
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return $previous;
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}
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/**
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* Set a target namespace to override the defaults
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*/
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public function setTargetNamespace( $namespace ) {
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if( is_null( $namespace ) ) {
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// Don't override namespaces
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$this->mTargetNamespace = null;
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} elseif( $namespace >= 0 ) {
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// FIXME: Check for validity
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$this->mTargetNamespace = intval( $namespace );
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} else {
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return false;
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}
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}
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/**
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* Default per-revision callback, performs the import.
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* @param $revision WikiRevision
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*/
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public function importRevision( $revision ) {
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$dbw = wfGetDB( DB_MASTER );
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return $dbw->deadlockLoop( array( $revision, 'importOldRevision' ) );
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}
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/**
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* Default per-revision callback, performs the import.
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* @param $rev WikiRevision
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*/
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public function importLogItem( $rev ) {
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$dbw = wfGetDB( DB_MASTER );
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return $dbw->deadlockLoop( array( $rev, 'importLogItem' ) );
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}
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/**
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* Dummy for now...
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*/
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public function importUpload( $revision ) {
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//$dbw = wfGetDB( DB_MASTER );
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//return $dbw->deadlockLoop( array( $revision, 'importUpload' ) );
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return false;
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}
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/**
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* Mostly for hook use
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*/
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public function finishImportPage( $title, $origTitle, $revCount, $sRevCount, $pageInfo ) {
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$args = func_get_args();
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return wfRunHooks( 'AfterImportPage', $args );
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}
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/**
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* Alternate per-revision callback, for debugging.
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* @param $revision WikiRevision
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*/
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public function debugRevisionHandler( &$revision ) {
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$this->debug( "Got revision:" );
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if( is_object( $revision->title ) ) {
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$this->debug( "-- Title: " . $revision->title->getPrefixedText() );
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} else {
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$this->debug( "-- Title: <invalid>" );
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}
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$this->debug( "-- User: " . $revision->user_text );
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$this->debug( "-- Timestamp: " . $revision->timestamp );
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$this->debug( "-- Comment: " . $revision->comment );
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$this->debug( "-- Text: " . $revision->text );
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}
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/**
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* Notify the callback function when a new <page> is reached.
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* @param $title Title
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*/
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function pageCallback( $title ) {
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if( isset( $this->mPageCallback ) ) {
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call_user_func( $this->mPageCallback, $title );
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}
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}
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/**
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* Notify the callback function when a </page> is closed.
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* @param $title Title
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* @param $origTitle Title
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* @param $revCount Integer
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* @param $sucCount Int: number of revisions for which callback returned true
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* @param $pageInfo Array: associative array of page information
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*/
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private function pageOutCallback( $title, $origTitle, $revCount, $sucCount, $pageInfo ) {
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if( isset( $this->mPageOutCallback ) ) {
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$args = func_get_args();
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call_user_func_array( $this->mPageOutCallback, $args );
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}
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}
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/**
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* Notify the callback function of a revision
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* @param $revision A WikiRevision object
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*/
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private function revisionCallback( $revision ) {
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if ( isset( $this->mRevisionCallback ) ) {
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return call_user_func_array( $this->mRevisionCallback,
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array( $revision, $this ) );
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} else {
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return false;
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}
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}
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/**
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* Notify the callback function of a new log item
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* @param $revision A WikiRevision object
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*/
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private function logItemCallback( $revision ) {
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if ( isset( $this->mLogItemCallback ) ) {
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return call_user_func_array( $this->mLogItemCallback,
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array( $revision, $this ) );
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} else {
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return false;
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}
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}
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/**
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* Shouldn't something like this be built-in to XMLReader?
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* Fetches text contents of the current element, assuming
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* no sub-elements or such scary things.
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* @return string
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* @access private
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*/
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private function nodeContents() {
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return $this->reader->nodeContents();
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}
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# --------------
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/** Left in for debugging */
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private function dumpElement() {
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static $lookup = null;
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if (!$lookup) {
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$xmlReaderConstants = array(
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"NONE",
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"ELEMENT",
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"ATTRIBUTE",
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"TEXT",
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"CDATA",
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"ENTITY_REF",
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"ENTITY",
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"PI",
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"COMMENT",
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"DOC",
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"DOC_TYPE",
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"DOC_FRAGMENT",
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"NOTATION",
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"WHITESPACE",
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"SIGNIFICANT_WHITESPACE",
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"END_ELEMENT",
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"END_ENTITY",
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"XML_DECLARATION",
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);
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$lookup = array();
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foreach( $xmlReaderConstants as $name ) {
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$lookup[constant("XmlReader::$name")] = $name;
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}
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}
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print( var_dump(
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$lookup[$this->reader->nodeType],
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$this->reader->name,
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$this->reader->value
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)."\n\n" );
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}
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/**
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* Primary entry point
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*/
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public function doImport() {
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$this->reader->read();
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if ( $this->reader->name != 'mediawiki' ) {
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throw new MWException( "Expected <mediawiki> tag, got ".
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$this->reader->name );
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}
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$this->debug( "<mediawiki> tag is correct." );
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$this->debug( "Starting primary dump processing loop." );
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$keepReading = $this->reader->read();
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$skip = false;
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while ( $keepReading ) {
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$tag = $this->reader->name;
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$type = $this->reader->nodeType;
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if ( !wfRunHooks( 'ImportHandleToplevelXMLTag', $this->reader ) ) {
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// Do nothing
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} elseif ( $tag == 'mediawiki' && $type == XmlReader::END_ELEMENT ) {
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break;
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} elseif ( $tag == 'siteinfo' ) {
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$this->handleSiteInfo();
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} elseif ( $tag == 'page' ) {
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$this->handlePage();
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} elseif ( $tag == 'logitem' ) {
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$this->handleLogItem();
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} elseif ( $tag != '#text' ) {
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$this->warn( "Unhandled top-level XML tag $tag" );
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$skip = true;
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}
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if ($skip) {
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$keepReading = $this->reader->next();
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$skip = false;
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$this->debug( "Skip" );
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} else {
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$keepReading = $this->reader->read();
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}
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}
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return true;
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}
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private function handleSiteInfo() {
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// Site info is useful, but not actually used for dump imports.
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// Includes a quick short-circuit to save performance.
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if ( ! $this->mSiteInfoCallback ) {
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$this->reader->next();
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return true;
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}
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throw new MWException( "SiteInfo tag is not yet handled, do not set mSiteInfoCallback" );
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}
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private function handleLogItem() {
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$this->debug( "Enter log item handler." );
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$logInfo = array();
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// Fields that can just be stuffed in the pageInfo object
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$normalFields = array( 'id', 'comment', 'type', 'action', 'timestamp',
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'logtitle', 'params' );
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while ( $this->reader->read() ) {
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if ( $this->reader->nodeType == XmlReader::END_ELEMENT &&
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$this->reader->name == 'logitem') {
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break;
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}
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$tag = $this->reader->name;
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if ( !wfRunHooks( 'ImportHandleLogItemXMLTag',
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$this->reader, $logInfo ) ) {
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// Do nothing
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} elseif ( in_array( $tag, $normalFields ) ) {
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$logInfo[$tag] = $this->nodeContents();
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} elseif ( $tag == 'contributor' ) {
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$logInfo['contributor'] = $this->handleContributor();
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} elseif ( $tag != '#text' ) {
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$this->warn( "Unhandled log-item XML tag $tag" );
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}
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}
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$this->processLogItem( $logInfo );
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}
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private function processLogItem( $logInfo ) {
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$revision = new WikiRevision;
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$revision->setID( $logInfo['id'] );
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$revision->setType( $logInfo['type'] );
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$revision->setAction( $logInfo['action'] );
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$revision->setTimestamp( $logInfo['timestamp'] );
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$revision->setParams( $logInfo['params'] );
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$revision->setTitle( Title::newFromText( $logInfo['logtitle'] ) );
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if ( isset( $logInfo['comment'] ) ) {
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$revision->setComment( $logInfo['comment'] );
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}
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if ( isset( $logInfo['contributor']['ip'] ) ) {
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$revision->setUserIP( $logInfo['contributor']['ip'] );
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}
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if ( isset( $logInfo['contributor']['username'] ) ) {
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$revision->setUserName( $logInfo['contributor']['username'] );
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}
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return $this->logItemCallback( $revision );
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}
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private function handlePage() {
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// Handle page data.
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$this->debug( "Enter page handler." );
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$pageInfo = array( 'revisionCount' => 0, 'successfulRevisionCount' => 0 );
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// Fields that can just be stuffed in the pageInfo object
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$normalFields = array( 'title', 'id', 'redirect', 'restrictions' );
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$skip = false;
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$badTitle = false;
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while ( $skip ? $this->reader->next() : $this->reader->read() ) {
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if ( $this->reader->nodeType == XmlReader::END_ELEMENT &&
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$this->reader->name == 'page') {
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break;
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}
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$tag = $this->reader->name;
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if ( $badTitle ) {
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// The title is invalid, bail out of this page
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$skip = true;
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} elseif ( !wfRunHooks( 'ImportHandlePageXMLTag', array( $this->reader,
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&$pageInfo ) ) ) {
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// Do nothing
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} elseif ( in_array( $tag, $normalFields ) ) {
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$pageInfo[$tag] = $this->nodeContents();
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if ( $tag == 'title' ) {
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$title = $this->processTitle( $pageInfo['title'] );
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if ( !$title ) {
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$badTitle = true;
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$skip = true;
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}
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$this->pageCallback( $title );
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list( $pageInfo['_title'], $origTitle ) = $title;
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}
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} elseif ( $tag == 'revision' ) {
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$this->handleRevision( $pageInfo );
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} elseif ( $tag == 'upload' ) {
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$this->handleUpload( $pageInfo );
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} elseif ( $tag != '#text' ) {
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$this->warn( "Unhandled page XML tag $tag" );
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$skip = true;
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}
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}
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$this->pageOutCallback( $pageInfo['_title'], $origTitle,
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$pageInfo['revisionCount'],
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$pageInfo['successfulRevisionCount'],
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$pageInfo );
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}
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private function handleRevision( &$pageInfo ) {
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$this->debug( "Enter revision handler" );
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$revisionInfo = array();
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$normalFields = array( 'id', 'timestamp', 'comment', 'minor', 'text' );
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$skip = false;
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while ( $skip ? $this->reader->next() : $this->reader->read() ) {
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if ( $this->reader->nodeType == XmlReader::END_ELEMENT &&
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$this->reader->name == 'revision') {
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break;
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}
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$tag = $this->reader->name;
|
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|
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if ( !wfRunHooks( 'ImportHandleRevisionXMLTag', $this->reader,
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$pageInfo, $revisionInfo ) ) {
|
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// Do nothing
|
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} elseif ( in_array( $tag, $normalFields ) ) {
|
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$revisionInfo[$tag] = $this->nodeContents();
|
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} elseif ( $tag == 'contributor' ) {
|
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$revisionInfo['contributor'] = $this->handleContributor();
|
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} elseif ( $tag != '#text' ) {
|
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$this->warn( "Unhandled revision XML tag $tag" );
|
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$skip = true;
|
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}
|
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}
|
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$pageInfo['revisionCount']++;
|
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if ( $this->processRevision( $pageInfo, $revisionInfo ) ) {
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$pageInfo['successfulRevisionCount']++;
|
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}
|
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}
|
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private function processRevision( $pageInfo, $revisionInfo ) {
|
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$revision = new WikiRevision;
|
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|
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$revision->setID( $revisionInfo['id'] );
|
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$revision->setText( $revisionInfo['text'] );
|
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$revision->setTitle( $pageInfo['_title'] );
|
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$revision->setTimestamp( $revisionInfo['timestamp'] );
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if ( isset( $revisionInfo['comment'] ) ) {
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$revision->setComment( $revisionInfo['comment'] );
|
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}
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if ( isset( $revisionInfo['minor'] ) )
|
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$revision->setMinor( true );
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if ( isset( $revisionInfo['contributor']['ip'] ) ) {
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$revision->setUserIP( $revisionInfo['contributor']['ip'] );
|
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}
|
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if ( isset( $revisionInfo['contributor']['username'] ) ) {
|
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$revision->setUserName( $revisionInfo['contributor']['username'] );
|
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}
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return $this->revisionCallback( $revision );
|
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}
|
|
|
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private function handleUpload( &$pageInfo ) {
|
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$this->debug( "Enter upload handler" );
|
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$uploadInfo = array();
|
|
|
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$normalFields = array( 'timestamp', 'comment', 'filename', 'text',
|
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'src', 'size' );
|
|
|
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$skip = false;
|
|
|
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while ( $skip ? $this->reader->next() : $this->reader->read() ) {
|
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if ( $this->reader->nodeType == XmlReader::END_ELEMENT &&
|
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$this->reader->name == 'upload') {
|
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break;
|
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}
|
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|
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$tag = $this->reader->name;
|
|
|
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if ( !wfRunHooks( 'ImportHandleUploadXMLTag', $this->reader,
|
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$pageInfo, $revisionInfo ) ) {
|
|
// Do nothing
|
|
} elseif ( in_array( $tag, $normalFields ) ) {
|
|
$uploadInfo[$tag] = $this->nodeContents();
|
|
} elseif ( $tag == 'contributor' ) {
|
|
$uploadInfo['contributor'] = $this->handleContributor();
|
|
} elseif ( $tag != '#text' ) {
|
|
$this->warn( "Unhandled upload XML tag $tag" );
|
|
$skip = true;
|
|
}
|
|
}
|
|
|
|
return $this->processUpload( $pageInfo, $uploadInfo );
|
|
}
|
|
|
|
private function processUpload( $pageInfo, $uploadInfo ) {
|
|
$revision = new WikiRevision;
|
|
|
|
$revision->setTitle( $pageInfo['_title'] );
|
|
$revision->setID( $uploadInfo['id'] );
|
|
$revision->setTimestamp( $uploadInfo['timestamp'] );
|
|
$revision->setText( $uploadInfo['text'] );
|
|
$revision->setFilename( $uploadInfo['filename'] );
|
|
$revision->setSrc( $uploadInfo['src'] );
|
|
$revision->setSize( intval( $uploadInfo['size'] ) );
|
|
$revision->setComment( $uploadInfo['comment'] );
|
|
|
|
if ( isset( $uploadInfo['contributor']['ip'] ) ) {
|
|
$revision->setUserIP( $revisionInfo['contributor']['ip'] );
|
|
}
|
|
if ( isset( $uploadInfo['contributor']['username'] ) ) {
|
|
$revision->setUserName( $revisionInfo['contributor']['username'] );
|
|
}
|
|
|
|
return $this->uploadCallback( $revision );
|
|
}
|
|
|
|
private function handleContributor() {
|
|
$fields = array( 'id', 'ip', 'username' );
|
|
$info = array();
|
|
|
|
while ( $this->reader->read() ) {
|
|
if ( $this->reader->nodeType == XmlReader::END_ELEMENT &&
|
|
$this->reader->name == 'contributor') {
|
|
break;
|
|
}
|
|
|
|
$tag = $this->reader->name;
|
|
|
|
if ( in_array( $tag, $fields ) ) {
|
|
$info[$tag] = $this->nodeContents();
|
|
}
|
|
}
|
|
|
|
return $info;
|
|
}
|
|
|
|
private function processTitle( $text ) {
|
|
$workTitle = $text;
|
|
$origTitle = Title::newFromText( $workTitle );
|
|
$title = null;
|
|
|
|
if( !is_null( $this->mTargetNamespace ) && !is_null( $origTitle ) ) {
|
|
$title = Title::makeTitle( $this->mTargetNamespace,
|
|
$origTitle->getDBkey() );
|
|
} else {
|
|
$title = Title::newFromText( $workTitle );
|
|
}
|
|
|
|
if( is_null( $title ) ) {
|
|
// Invalid page title? Ignore the page
|
|
$this->notice( "Skipping invalid page title '$workTitle'" );
|
|
} elseif( $title->getInterwiki() != '' ) {
|
|
$this->notice( "Skipping interwiki page title '$workTitle'" );
|
|
$title = null;
|
|
}
|
|
|
|
return array( $origTitle, $title );
|
|
}
|
|
}
|
|
|
|
/** This is a horrible hack used to keep source compatibility */
|
|
class UploadSourceAdapter {
|
|
static $sourceRegistrations = array();
|
|
|
|
private $mSource;
|
|
private $mBuffer;
|
|
private $mPosition;
|
|
|
|
static function registerSource( $source ) {
|
|
$id = wfGenerateToken();
|
|
|
|
self::$sourceRegistrations[$id] = $source;
|
|
|
|
return $id;
|
|
}
|
|
|
|
function stream_open( $path, $mode, $options, &$opened_path ) {
|
|
$url = parse_url($path);
|
|
$id = $url['host'];
|
|
|
|
if ( !isset( self::$sourceRegistrations[$id] ) ) {
|
|
return false;
|
|
}
|
|
|
|
$this->mSource = self::$sourceRegistrations[$id];
|
|
|
|
return true;
|
|
}
|
|
|
|
function stream_read( $count ) {
|
|
$return = '';
|
|
$leave = false;
|
|
|
|
while ( !$leave && !$this->mSource->atEnd() &&
|
|
strlen($this->mBuffer) < $count ) {
|
|
$read = $this->mSource->readChunk();
|
|
|
|
if ( !strlen($read) ) {
|
|
$leave = true;
|
|
}
|
|
|
|
$this->mBuffer .= $read;
|
|
}
|
|
|
|
if ( strlen($this->mBuffer) ) {
|
|
$return = substr( $this->mBuffer, 0, $count );
|
|
$this->mBuffer = substr( $this->mBuffer, $count );
|
|
}
|
|
|
|
$this->mPosition += strlen($return);
|
|
|
|
return $return;
|
|
}
|
|
|
|
function stream_write( $data ) {
|
|
return false;
|
|
}
|
|
|
|
function stream_tell() {
|
|
return $this->mPosition;
|
|
}
|
|
|
|
function stream_eof() {
|
|
return $this->mSource->atEnd();
|
|
}
|
|
|
|
function url_stat() {
|
|
$result = array();
|
|
|
|
$result['dev'] = $result[0] = 0;
|
|
$result['ino'] = $result[1] = 0;
|
|
$result['mode'] = $result[2] = 0;
|
|
$result['nlink'] = $result[3] = 0;
|
|
$result['uid'] = $result[4] = 0;
|
|
$result['gid'] = $result[5] = 0;
|
|
$result['rdev'] = $result[6] = 0;
|
|
$result['size'] = $result[7] = 0;
|
|
$result['atime'] = $result[8] = 0;
|
|
$result['mtime'] = $result[9] = 0;
|
|
$result['ctime'] = $result[10] = 0;
|
|
$result['blksize'] = $result[11] = 0;
|
|
$result['blocks'] = $result[12] = 0;
|
|
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
class XMLReader2 extends XMLReader {
|
|
function nodeContents() {
|
|
if( $this->isEmptyElement ) {
|
|
return "";
|
|
}
|
|
$buffer = "";
|
|
while( $this->read() ) {
|
|
switch( $this->nodeType ) {
|
|
case XmlReader::TEXT:
|
|
case XmlReader::SIGNIFICANT_WHITESPACE:
|
|
$buffer .= $this->value;
|
|
break;
|
|
case XmlReader::END_ELEMENT:
|
|
return $buffer;
|
|
}
|
|
}
|
|
return $this->close();
|
|
}
|
|
}
|