3 * Base classes for dumps and export
5 * Copyright © 2003, 2005, 2006 Brion Vibber <brion@pobox.com>
6 * http://www.mediawiki.org/
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 * http://www.gnu.org/copyleft/gpl.html
31 * @ingroup SpecialPage Dump
34 var $list_authors = false ; # Return distinct author list (when not returning full history)
35 var $author_list = "" ;
37 var $dumpUploads = false;
38 var $dumpUploadFileContents = false;
42 const STABLE
= 4; // extension defined
53 * If using WikiExporter::STREAM to stream a large amount of data,
54 * provide a database connection which is not managed by
55 * LoadBalancer to read from: some history blob types will
56 * make additional queries to pull source data while the
57 * main query is still running.
60 * @param $history Mixed: one of WikiExporter::FULL, WikiExporter::CURRENT,
61 * WikiExporter::RANGE or WikiExporter::STABLE,
62 * or an associative array:
63 * offset: non-inclusive offset at which to start the query
64 * limit: maximum number of rows to return
65 * dir: "asc" or "desc" timestamp order
66 * @param $buffer Int: one of WikiExporter::BUFFER or WikiExporter::STREAM
67 * @param $text Int: one of WikiExporter::TEXT or WikiExporter::STUB
69 function __construct( &$db, $history = WikiExporter
::CURRENT
,
70 $buffer = WikiExporter
::BUFFER
, $text = WikiExporter
::TEXT
) {
72 $this->history
= $history;
73 $this->buffer
= $buffer;
74 $this->writer
= new XmlDumpWriter();
75 $this->sink
= new DumpOutput();
80 * Set the DumpOutput or DumpFilter object which will receive
81 * various row objects and XML output for filtering. Filters
82 * can be chained or used as callbacks.
86 public function setOutputSink( &$sink ) {
90 public function openStream() {
91 $output = $this->writer
->openStream();
92 $this->sink
->writeOpenStream( $output );
95 public function closeStream() {
96 $output = $this->writer
->closeStream();
97 $this->sink
->writeCloseStream( $output );
101 * Dumps a series of page and revision records for all pages
102 * in the database, either including complete history or only
103 * the most recent version.
105 public function allPages() {
106 return $this->dumpFrom( '' );
110 * Dumps a series of page and revision records for those pages
111 * in the database falling within the page_id range given.
112 * @param $start Int: inclusive lower limit (this id is included)
113 * @param $end Int: Exclusive upper limit (this id is not included)
114 * If 0, no upper limit.
116 public function pagesByRange( $start, $end ) {
117 $condition = 'page_id >= ' . intval( $start );
119 $condition .= ' AND page_id < ' . intval( $end );
121 return $this->dumpFrom( $condition );
125 * Dumps a series of page and revision records for those pages
126 * in the database with revisions falling within the rev_id range given.
127 * @param $start Int: inclusive lower limit (this id is included)
128 * @param $end Int: Exclusive upper limit (this id is not included)
129 * If 0, no upper limit.
131 public function revsByRange( $start, $end ) {
132 $condition = 'rev_id >= ' . intval( $start );
134 $condition .= ' AND rev_id < ' . intval( $end );
136 return $this->dumpFrom( $condition );
140 * @param $title Title
142 public function pageByTitle( $title ) {
143 return $this->dumpFrom(
144 'page_namespace=' . $title->getNamespace() .
145 ' AND page_title=' . $this->db
->addQuotes( $title->getDBkey() ) );
148 public function pageByName( $name ) {
149 $title = Title
::newFromText( $name );
150 if ( is_null( $title ) ) {
151 throw new MWException( "Can't export invalid title" );
153 return $this->pageByTitle( $title );
157 public function pagesByName( $names ) {
158 foreach ( $names as $name ) {
159 $this->pageByName( $name );
163 public function allLogs() {
164 return $this->dumpFrom( '' );
167 public function logsByRange( $start, $end ) {
168 $condition = 'log_id >= ' . intval( $start );
170 $condition .= ' AND log_id < ' . intval( $end );
172 return $this->dumpFrom( $condition );
175 # Generates the distinct list of authors of an article
176 # Not called by default (depends on $this->list_authors)
177 # Can be set by Special:Export when not exporting whole history
178 protected function do_list_authors( $cond ) {
179 wfProfileIn( __METHOD__
);
180 $this->author_list
= "<contributors>";
183 $res = $this->db
->select(
184 array( 'page', 'revision' ),
185 array( 'DISTINCT rev_user_text', 'rev_user' ),
187 $this->db
->bitAnd( 'rev_deleted', Revision
::DELETED_USER
) . ' = 0',
194 foreach ( $res as $row ) {
195 $this->author_list
.= "<contributor>" .
197 htmlentities( $row->rev_user_text
) .
204 $this->author_list
.= "</contributors>";
205 wfProfileOut( __METHOD__
);
208 protected function dumpFrom( $cond = '' ) {
209 wfProfileIn( __METHOD__
);
210 # For logging dumps...
211 if ( $this->history
& self
::LOGS
) {
212 if ( $this->buffer
== WikiExporter
::STREAM
) {
213 $prev = $this->db
->bufferResults( false );
215 $where = array( 'user_id = log_user' );
217 $hideLogs = LogEventsList
::getExcludeClause( $this->db
);
218 if ( $hideLogs ) $where[] = $hideLogs;
219 # Add on any caller specified conditions
220 if ( $cond ) $where[] = $cond;
221 # Get logging table name for logging.* clause
222 $logging = $this->db
->tableName( 'logging' );
223 $result = $this->db
->select( array( 'logging', 'user' ),
224 array( "{$logging}.*", 'user_name' ), // grab the user name
227 array( 'ORDER BY' => 'log_id', 'USE INDEX' => array( 'logging' => 'PRIMARY' ) )
229 $wrapper = $this->db
->resultObject( $result );
230 $this->outputLogStream( $wrapper );
231 if ( $this->buffer
== WikiExporter
::STREAM
) {
232 $this->db
->bufferResults( $prev );
236 $tables = array( 'page', 'revision' );
237 $opts = array( 'ORDER BY' => 'page_id ASC' );
238 $opts['USE INDEX'] = array();
240 if ( is_array( $this->history
) ) {
241 # Time offset/limit for all pages/history...
242 $revJoin = 'page_id=rev_page';
244 if ( $this->history
['dir'] == 'asc' ) {
246 $opts['ORDER BY'] = 'rev_timestamp ASC';
249 $opts['ORDER BY'] = 'rev_timestamp DESC';
252 if ( !empty( $this->history
['offset'] ) ) {
253 $revJoin .= " AND rev_timestamp $op " .
254 $this->db
->addQuotes( $this->db
->timestamp( $this->history
['offset'] ) );
256 $join['revision'] = array( 'INNER JOIN', $revJoin );
258 if ( !empty( $this->history
['limit'] ) ) {
259 $opts['LIMIT'] = intval( $this->history
['limit'] );
261 } elseif ( $this->history
& WikiExporter
::FULL
) {
262 # Full history dumps...
263 $join['revision'] = array( 'INNER JOIN', 'page_id=rev_page' );
264 } elseif ( $this->history
& WikiExporter
::CURRENT
) {
265 # Latest revision dumps...
266 if ( $this->list_authors
&& $cond != '' ) { // List authors, if so desired
267 $this->do_list_authors( $cond );
269 $join['revision'] = array( 'INNER JOIN', 'page_id=rev_page AND page_latest=rev_id' );
270 } elseif ( $this->history
& WikiExporter
::STABLE
) {
271 # "Stable" revision dumps...
272 # Default JOIN, to be overridden...
273 $join['revision'] = array( 'INNER JOIN', 'page_id=rev_page AND page_latest=rev_id' );
274 # One, and only one hook should set this, and return false
275 if ( wfRunHooks( 'WikiExporter::dumpStableQuery', array( &$tables, &$opts, &$join ) ) ) {
276 wfProfileOut( __METHOD__
);
277 throw new MWException( __METHOD__
. " given invalid history dump type." );
279 } elseif ( $this->history
& WikiExporter
::RANGE
) {
280 # Dump of revisions within a specified range
281 $join['revision'] = array( 'INNER JOIN', 'page_id=rev_page' );
282 $opts['ORDER BY'] = 'rev_page ASC, rev_id ASC';
284 # Uknown history specification parameter?
285 wfProfileOut( __METHOD__
);
286 throw new MWException( __METHOD__
. " given invalid history dump type." );
288 # Query optimization hacks
290 $opts[] = 'STRAIGHT_JOIN';
291 $opts['USE INDEX']['page'] = 'PRIMARY';
293 # Build text join options
294 if ( $this->text
!= WikiExporter
::STUB
) { // 1-pass
296 $join['text'] = array( 'INNER JOIN', 'rev_text_id=old_id' );
299 if ( $this->buffer
== WikiExporter
::STREAM
) {
300 $prev = $this->db
->bufferResults( false );
303 wfRunHooks( 'ModifyExportQuery',
304 array( $this->db
, &$tables, &$cond, &$opts, &$join ) );
307 $result = $this->db
->select( $tables, '*', $cond, __METHOD__
, $opts, $join );
308 $wrapper = $this->db
->resultObject( $result );
309 # Output dump results
310 $this->outputPageStream( $wrapper );
311 if ( $this->list_authors
) {
312 $this->outputPageStream( $wrapper );
315 if ( $this->buffer
== WikiExporter
::STREAM
) {
316 $this->db
->bufferResults( $prev );
319 wfProfileOut( __METHOD__
);
323 * Runs through a query result set dumping page and revision records.
324 * The result set should be sorted/grouped by page to avoid duplicate
325 * page records in the output.
327 * The result set will be freed once complete. Should be safe for
328 * streaming (non-buffered) queries, as long as it was made on a
329 * separate database connection not managed by LoadBalancer; some
330 * blob storage types will make queries to pull source data.
332 * @param $resultset ResultWrapper
334 protected function outputPageStream( $resultset ) {
336 foreach ( $resultset as $row ) {
337 if ( is_null( $last ) ||
338 $last->page_namespace
!= $row->page_namespace ||
339 $last->page_title
!= $row->page_title
) {
340 if ( isset( $last ) ) {
342 if ( $this->dumpUploads
) {
343 $output .= $this->writer
->writeUploads( $last, $this->dumpUploadFileContents
);
345 $output .= $this->writer
->closePage();
346 $this->sink
->writeClosePage( $output );
348 $output = $this->writer
->openPage( $row );
349 $this->sink
->writeOpenPage( $row, $output );
352 $output = $this->writer
->writeRevision( $row );
353 $this->sink
->writeRevision( $row, $output );
355 if ( isset( $last ) ) {
357 if ( $this->dumpUploads
) {
358 $output .= $this->writer
->writeUploads( $last, $this->dumpUploadFileContents
);
360 $output .= $this->author_list
;
361 $output .= $this->writer
->closePage();
362 $this->sink
->writeClosePage( $output );
366 protected function outputLogStream( $resultset ) {
367 foreach ( $resultset as $row ) {
368 $output = $this->writer
->writeLogItem( $row );
369 $this->sink
->writeLogItem( $row, $output );
377 class XmlDumpWriter
{
379 * Returns the export schema version.
382 function schemaVersion() {
387 * Opens the XML output stream's root <mediawiki> element.
388 * This does not include an xml directive, so is safe to include
389 * as a subelement in a larger XML stream. Namespace and XML Schema
390 * references are included.
392 * Output will be encoded in UTF-8.
396 function openStream() {
397 global $wgLanguageCode;
398 $ver = $this->schemaVersion();
399 return Xml
::element( 'mediawiki', array(
400 'xmlns' => "http://www.mediawiki.org/xml/export-$ver/",
401 'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
402 'xsi:schemaLocation' => "http://www.mediawiki.org/xml/export-$ver/ " .
403 "http://www.mediawiki.org/xml/export-$ver.xsd",
405 'xml:lang' => $wgLanguageCode ),
411 function siteInfo() {
416 $this->caseSetting(),
417 $this->namespaces() );
418 return " <siteinfo>\n " .
419 implode( "\n ", $info ) .
423 function sitename() {
425 return Xml
::element( 'sitename', array(), $wgSitename );
428 function generator() {
430 return Xml
::element( 'generator', array(), "MediaWiki $wgVersion" );
433 function homelink() {
434 return Xml
::element( 'base', array(), Title
::newMainPage()->getCanonicalUrl() );
437 function caseSetting() {
438 global $wgCapitalLinks;
439 // "case-insensitive" option is reserved for future
440 $sensitivity = $wgCapitalLinks ?
'first-letter' : 'case-sensitive';
441 return Xml
::element( 'case', array(), $sensitivity );
444 function namespaces() {
446 $spaces = "<namespaces>\n";
447 foreach ( $wgContLang->getFormattedNamespaces() as $ns => $title ) {
449 Xml
::element( 'namespace',
451 'case' => MWNamespace
::isCapitalized( $ns ) ?
'first-letter' : 'case-sensitive',
454 $spaces .= " </namespaces>";
459 * Closes the output stream with the closing root element.
460 * Call when finished dumping things.
464 function closeStream() {
465 return "</mediawiki>\n";
469 * Opens a <page> section on the output stream, with data
470 * from the given database row.
476 function openPage( $row ) {
478 $title = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
479 $out .= ' ' . Xml
::elementClean( 'title', array(), strval( $title->getPrefixedText() ) ) . "\n";
480 $out .= ' ' . Xml
::element( 'ns', array(), strval( $row->page_namespace
) ) . "\n";
481 $out .= ' ' . Xml
::element( 'id', array(), strval( $row->page_id
) ) . "\n";
482 if ( $row->page_is_redirect
) {
483 $page = WikiPage
::factory( $title );
484 $redirect = $page->getRedirectTarget();
485 if ( $redirect !== null ) {
486 $out .= ' ' . Xml
::element( 'redirect', array( 'title' => strval( $redirect ) ) ) . "\n";
489 if ( $row->page_restrictions
!= '' ) {
490 $out .= ' ' . Xml
::element( 'restrictions', array(),
491 strval( $row->page_restrictions
) ) . "\n";
494 wfRunHooks( 'XmlDumpWriterOpenPage', array( $this, &$out, $row, $title ) );
500 * Closes a <page> section on the output stream.
504 function closePage() {
509 * Dumps a <revision> section on the output stream, with
510 * data filled in from the given database row.
516 function writeRevision( $row ) {
517 wfProfileIn( __METHOD__
);
519 $out = " <revision>\n";
520 $out .= " " . Xml
::element( 'id', null, strval( $row->rev_id
) ) . "\n";
522 $out .= $this->writeTimestamp( $row->rev_timestamp
);
524 if ( $row->rev_deleted
& Revision
::DELETED_USER
) {
525 $out .= " " . Xml
::element( 'contributor', array( 'deleted' => 'deleted' ) ) . "\n";
527 $out .= $this->writeContributor( $row->rev_user
, $row->rev_user_text
);
530 if ( $row->rev_minor_edit
) {
531 $out .= " <minor/>\n";
533 if ( $row->rev_deleted
& Revision
::DELETED_COMMENT
) {
534 $out .= " " . Xml
::element( 'comment', array( 'deleted' => 'deleted' ) ) . "\n";
535 } elseif ( $row->rev_comment
!= '' ) {
536 $out .= " " . Xml
::elementClean( 'comment', null, strval( $row->rev_comment
) ) . "\n";
540 if ( $row->rev_deleted
& Revision
::DELETED_TEXT
) {
541 $out .= " " . Xml
::element( 'text', array( 'deleted' => 'deleted' ) ) . "\n";
542 } elseif ( isset( $row->old_text
) ) {
543 // Raw text from the database may have invalid chars
544 $text = strval( Revision
::getRevisionText( $row ) );
545 $out .= " " . Xml
::elementClean( 'text',
546 array( 'xml:space' => 'preserve', 'bytes' => $row->rev_len
),
547 strval( $text ) ) . "\n";
550 $out .= " " . Xml
::element( 'text',
551 array( 'id' => $row->rev_text_id
, 'bytes' => $row->rev_len
),
555 wfRunHooks( 'XmlDumpWriterWriteRevision', array( &$this, &$out, $row, $text ) );
557 $out .= " </revision>\n";
559 wfProfileOut( __METHOD__
);
564 * Dumps a <logitem> section on the output stream, with
565 * data filled in from the given database row.
571 function writeLogItem( $row ) {
572 wfProfileIn( __METHOD__
);
574 $out = " <logitem>\n";
575 $out .= " " . Xml
::element( 'id', null, strval( $row->log_id
) ) . "\n";
577 $out .= $this->writeTimestamp( $row->log_timestamp
);
579 if ( $row->log_deleted
& LogPage
::DELETED_USER
) {
580 $out .= " " . Xml
::element( 'contributor', array( 'deleted' => 'deleted' ) ) . "\n";
582 $out .= $this->writeContributor( $row->log_user
, $row->user_name
);
585 if ( $row->log_deleted
& LogPage
::DELETED_COMMENT
) {
586 $out .= " " . Xml
::element( 'comment', array( 'deleted' => 'deleted' ) ) . "\n";
587 } elseif ( $row->log_comment
!= '' ) {
588 $out .= " " . Xml
::elementClean( 'comment', null, strval( $row->log_comment
) ) . "\n";
591 $out .= " " . Xml
::element( 'type', null, strval( $row->log_type
) ) . "\n";
592 $out .= " " . Xml
::element( 'action', null, strval( $row->log_action
) ) . "\n";
594 if ( $row->log_deleted
& LogPage
::DELETED_ACTION
) {
595 $out .= " " . Xml
::element( 'text', array( 'deleted' => 'deleted' ) ) . "\n";
597 $title = Title
::makeTitle( $row->log_namespace
, $row->log_title
);
598 $out .= " " . Xml
::elementClean( 'logtitle', null, $title->getPrefixedText() ) . "\n";
599 $out .= " " . Xml
::elementClean( 'params',
600 array( 'xml:space' => 'preserve' ),
601 strval( $row->log_params
) ) . "\n";
604 $out .= " </logitem>\n";
606 wfProfileOut( __METHOD__
);
610 function writeTimestamp( $timestamp ) {
611 $ts = wfTimestamp( TS_ISO_8601
, $timestamp );
612 return " " . Xml
::element( 'timestamp', null, $ts ) . "\n";
615 function writeContributor( $id, $text ) {
616 $out = " <contributor>\n";
618 $out .= " " . Xml
::elementClean( 'username', null, strval( $text ) ) . "\n";
619 $out .= " " . Xml
::element( 'id', null, strval( $id ) ) . "\n";
621 $out .= " " . Xml
::elementClean( 'ip', null, strval( $text ) ) . "\n";
623 $out .= " </contributor>\n";
628 * Warning! This data is potentially inconsistent. :(
630 function writeUploads( $row, $dumpContents = false ) {
631 if ( $row->page_namespace
== NS_IMAGE
) {
632 $img = wfLocalFile( $row->page_title
);
633 if ( $img && $img->exists() ) {
635 foreach ( array_reverse( $img->getHistory() ) as $ver ) {
636 $out .= $this->writeUpload( $ver, $dumpContents );
638 $out .= $this->writeUpload( $img, $dumpContents );
647 * @param $dumpContents bool
650 function writeUpload( $file, $dumpContents = false ) {
651 if ( $file->isOld() ) {
653 Xml
::element( 'archivename', null, $file->getArchiveName() ) . "\n";
657 if ( $dumpContents ) {
658 # Dump file as base64
659 # Uses only XML-safe characters, so does not need escaping
660 $contents = ' <contents encoding="base64">' .
661 chunk_split( base64_encode( file_get_contents( $file->getPath() ) ) ) .
666 return " <upload>\n" .
667 $this->writeTimestamp( $file->getTimestamp() ) .
668 $this->writeContributor( $file->getUser( 'id' ), $file->getUser( 'text' ) ) .
669 " " . Xml
::elementClean( 'comment', null, $file->getDescription() ) . "\n" .
670 " " . Xml
::element( 'filename', null, $file->getName() ) . "\n" .
672 " " . Xml
::element( 'src', null, $file->getCanonicalUrl() ) . "\n" .
673 " " . Xml
::element( 'size', null, $file->getSize() ) . "\n" .
674 " " . Xml
::element( 'sha1base36', null, $file->getSha1() ) . "\n" .
675 " " . Xml
::element( 'rel', null, $file->getRel() ) . "\n" .
684 * Base class for output stream; prints to stdout or buffer or whereever.
688 function writeOpenStream( $string ) {
689 $this->write( $string );
692 function writeCloseStream( $string ) {
693 $this->write( $string );
696 function writeOpenPage( $page, $string ) {
697 $this->write( $string );
700 function writeClosePage( $string ) {
701 $this->write( $string );
704 function writeRevision( $rev, $string ) {
705 $this->write( $string );
708 function writeLogItem( $rev, $string ) {
709 $this->write( $string );
713 * Override to write to a different stream type.
716 function write( $string ) {
721 * Close the old file, move it to a specified name,
722 * and reopen new file with the old name. Use this
723 * for writing out a file in multiple pieces
724 * at specified checkpoints (e.g. every n hours).
725 * @param $newname mixed File name. May be a string or an array with one element
727 function closeRenameAndReopen( $newname ) {
732 * Close the old file, and move it to a specified name.
733 * Use this for the last piece of a file written out
734 * at specified checkpoints (e.g. every n hours).
735 * @param $newname mixed File name. May be a string or an array with one element
736 * @param $open bool If true, a new file with the old filename will be opened again for writing (default: false)
738 function closeAndRename( $newname, $open = false ) {
743 * Returns the name of the file or files which are
744 * being written to, if there are any.
746 function getFilenames() {
752 * Stream outputter to send data to a file.
755 class DumpFileOutput
extends DumpOutput
{
756 protected $handle, $filename;
758 function __construct( $file ) {
759 $this->handle
= fopen( $file, "wt" );
760 $this->filename
= $file;
763 function write( $string ) {
764 fputs( $this->handle
, $string );
767 function closeRenameAndReopen( $newname ) {
768 $this->closeAndRename( $newname, true );
771 function renameOrException( $newname ) {
772 if (! rename( $this->filename
, $newname ) ) {
773 throw new MWException( __METHOD__
. ": rename of file {$this->filename} to $newname failed\n" );
777 function checkRenameArgCount( $newname ) {
778 if ( is_array( $newname ) ) {
779 if ( count( $newname ) > 1 ) {
780 throw new MWException( __METHOD__
. ": passed multiple arguments for rename of single file\n" );
782 $newname = $newname[0];
788 function closeAndRename( $newname, $open = false ) {
789 $newname = $this->checkRenameArgCount( $newname );
791 fclose( $this->handle
);
792 $this->renameOrException( $newname );
794 $this->handle
= fopen( $this->filename
, "wt" );
799 function getFilenames() {
800 return $this->filename
;
805 * Stream outputter to send data to a file via some filter program.
806 * Even if compression is available in a library, using a separate
807 * program can allow us to make use of a multi-processor system.
810 class DumpPipeOutput
extends DumpFileOutput
{
811 protected $command, $filename;
813 function __construct( $command, $file = null ) {
814 if ( !is_null( $file ) ) {
815 $command .= " > " . wfEscapeShellArg( $file );
818 $this->startCommand( $command );
819 $this->command
= $command;
820 $this->filename
= $file;
823 function startCommand( $command ) {
825 0 => array( "pipe", "r" ),
828 $this->procOpenResource
= proc_open( $command, $spec, $pipes );
829 $this->handle
= $pipes[0];
832 function closeRenameAndReopen( $newname ) {
833 $this->closeAndRename( $newname, true );
836 function closeAndRename( $newname, $open = false ) {
837 $newname = $this->checkRenameArgCount( $newname );
839 fclose( $this->handle
);
840 proc_close( $this->procOpenResource
);
841 $this->renameOrException( $newname );
843 $command = $this->command
;
844 $command .= " > " . wfEscapeShellArg( $this->filename
);
845 $this->startCommand( $command );
853 * Sends dump output via the gzip compressor.
856 class DumpGZipOutput
extends DumpPipeOutput
{
857 function __construct( $file ) {
858 parent
::__construct( "gzip", $file );
863 * Sends dump output via the bgzip2 compressor.
866 class DumpBZip2Output
extends DumpPipeOutput
{
867 function __construct( $file ) {
868 parent
::__construct( "bzip2", $file );
873 * Sends dump output via the p7zip compressor.
876 class Dump7ZipOutput
extends DumpPipeOutput
{
879 function __construct( $file ) {
880 $command = $this->setup7zCommand( $file );
881 parent
::__construct( $command );
882 $this->filename
= $file;
885 function setup7zCommand( $file ) {
886 $command = "7za a -bd -si " . wfEscapeShellArg( $file );
887 // Suppress annoying useless crap from p7zip
888 // Unfortunately this could suppress real error messages too
889 $command .= ' >' . wfGetNull() . ' 2>&1';
893 function closeRenameAndReopen( $newname ) {
894 $this->closeAndRename( $newname, true );
897 function closeAndRename( $newname, $open = false ) {
898 $newname = $this->checkRenameArgCount( $newname );
900 fclose( $this->handle
);
901 proc_close( $this->procOpenResource
);
902 $this->renameOrException( $newname );
904 $command = $this->setup7zCommand( $file );
905 $this->startCommand( $command );
914 * Dump output filter class.
915 * This just does output filtering and streaming; XML formatting is done
916 * higher up, so be careful in what you do.
920 function __construct( &$sink ) {
921 $this->sink
=& $sink;
924 function writeOpenStream( $string ) {
925 $this->sink
->writeOpenStream( $string );
928 function writeCloseStream( $string ) {
929 $this->sink
->writeCloseStream( $string );
932 function writeOpenPage( $page, $string ) {
933 $this->sendingThisPage
= $this->pass( $page, $string );
934 if ( $this->sendingThisPage
) {
935 $this->sink
->writeOpenPage( $page, $string );
939 function writeClosePage( $string ) {
940 if ( $this->sendingThisPage
) {
941 $this->sink
->writeClosePage( $string );
942 $this->sendingThisPage
= false;
946 function writeRevision( $rev, $string ) {
947 if ( $this->sendingThisPage
) {
948 $this->sink
->writeRevision( $rev, $string );
952 function writeLogItem( $rev, $string ) {
953 $this->sink
->writeRevision( $rev, $string );
956 function closeRenameAndReopen( $newname ) {
957 $this->sink
->closeRenameAndReopen( $newname );
960 function closeAndRename( $newname, $open = false ) {
961 $this->sink
->closeAndRename( $newname, $open );
964 function getFilenames() {
965 return $this->sink
->getFilenames();
969 * Override for page-based filter types.
972 function pass( $page ) {
978 * Simple dump output filter to exclude all talk pages.
981 class DumpNotalkFilter
extends DumpFilter
{
982 function pass( $page ) {
983 return !MWNamespace
::isTalk( $page->page_namespace
);
988 * Dump output filter to include or exclude pages in a given set of namespaces.
991 class DumpNamespaceFilter
extends DumpFilter
{
993 var $namespaces = array();
995 function __construct( &$sink, $param ) {
996 parent
::__construct( $sink );
999 "NS_MAIN" => NS_MAIN
,
1000 "NS_TALK" => NS_TALK
,
1001 "NS_USER" => NS_USER
,
1002 "NS_USER_TALK" => NS_USER_TALK
,
1003 "NS_PROJECT" => NS_PROJECT
,
1004 "NS_PROJECT_TALK" => NS_PROJECT_TALK
,
1005 "NS_FILE" => NS_FILE
,
1006 "NS_FILE_TALK" => NS_FILE_TALK
,
1007 "NS_IMAGE" => NS_IMAGE
, // NS_IMAGE is an alias for NS_FILE
1008 "NS_IMAGE_TALK" => NS_IMAGE_TALK
,
1009 "NS_MEDIAWIKI" => NS_MEDIAWIKI
,
1010 "NS_MEDIAWIKI_TALK" => NS_MEDIAWIKI_TALK
,
1011 "NS_TEMPLATE" => NS_TEMPLATE
,
1012 "NS_TEMPLATE_TALK" => NS_TEMPLATE_TALK
,
1013 "NS_HELP" => NS_HELP
,
1014 "NS_HELP_TALK" => NS_HELP_TALK
,
1015 "NS_CATEGORY" => NS_CATEGORY
,
1016 "NS_CATEGORY_TALK" => NS_CATEGORY_TALK
);
1018 if ( $param { 0 } == '!' ) {
1019 $this->invert
= true;
1020 $param = substr( $param, 1 );
1023 foreach ( explode( ',', $param ) as $key ) {
1024 $key = trim( $key );
1025 if ( isset( $constants[$key] ) ) {
1026 $ns = $constants[$key];
1027 $this->namespaces
[$ns] = true;
1028 } elseif ( is_numeric( $key ) ) {
1029 $ns = intval( $key );
1030 $this->namespaces
[$ns] = true;
1032 throw new MWException( "Unrecognized namespace key '$key'\n" );
1037 function pass( $page ) {
1038 $match = isset( $this->namespaces
[$page->page_namespace
] );
1039 return $this->invert
xor $match;
1045 * Dump output filter to include only the last revision in each page sequence.
1048 class DumpLatestFilter
extends DumpFilter
{
1049 var $page, $pageString, $rev, $revString;
1051 function writeOpenPage( $page, $string ) {
1052 $this->page
= $page;
1053 $this->pageString
= $string;
1056 function writeClosePage( $string ) {
1058 $this->sink
->writeOpenPage( $this->page
, $this->pageString
);
1059 $this->sink
->writeRevision( $this->rev
, $this->revString
);
1060 $this->sink
->writeClosePage( $string );
1063 $this->revString
= null;
1065 $this->pageString
= null;
1068 function writeRevision( $rev, $string ) {
1069 if ( $rev->rev_id
== $this->page
->page_latest
) {
1071 $this->revString
= $string;
1077 * Base class for output stream; prints to stdout or buffer or whereever.
1080 class DumpMultiWriter
{
1081 function __construct( $sinks ) {
1082 $this->sinks
= $sinks;
1083 $this->count
= count( $sinks );
1086 function writeOpenStream( $string ) {
1087 for ( $i = 0; $i < $this->count
; $i++
) {
1088 $this->sinks
[$i]->writeOpenStream( $string );
1092 function writeCloseStream( $string ) {
1093 for ( $i = 0; $i < $this->count
; $i++
) {
1094 $this->sinks
[$i]->writeCloseStream( $string );
1098 function writeOpenPage( $page, $string ) {
1099 for ( $i = 0; $i < $this->count
; $i++
) {
1100 $this->sinks
[$i]->writeOpenPage( $page, $string );
1104 function writeClosePage( $string ) {
1105 for ( $i = 0; $i < $this->count
; $i++
) {
1106 $this->sinks
[$i]->writeClosePage( $string );
1110 function writeRevision( $rev, $string ) {
1111 for ( $i = 0; $i < $this->count
; $i++
) {
1112 $this->sinks
[$i]->writeRevision( $rev, $string );
1116 function closeRenameAndReopen( $newnames ) {
1117 $this->closeAndRename( $newnames, true );
1120 function closeAndRename( $newnames, $open = false ) {
1121 for ( $i = 0; $i < $this->count
; $i++
) {
1122 $this->sinks
[$i]->closeAndRename( $newnames[$i], $open );
1126 function getFilenames() {
1127 $filenames = array();
1128 for ( $i = 0; $i < $this->count
; $i++
) {
1129 $filenames[] = $this->sinks
[$i]->getFilenames();
1136 function xmlsafe( $string ) {
1137 wfProfileIn( __FUNCTION__
);
1140 * The page may contain old data which has not been properly normalized.
1141 * Invalid UTF-8 sequences or forbidden control characters will make our
1142 * XML output invalid, so be sure to strip them out.
1144 $string = UtfNormal
::cleanUp( $string );
1146 $string = htmlspecialchars( $string );
1147 wfProfileOut( __FUNCTION__
);