Gecko [ paroquia-rio-de-mouro.pt ]

Name	Size	Permission	Date
actions	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
api	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
auth	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
cache	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
changes	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
changetags	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
clientpool	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
collation	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
compat	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
composer	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
config	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
content	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
context	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
dao	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
db	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
debug	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
deferred	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
diff	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
exception	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
export	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
extauth	[ DIR ]	drwxr-xr-x	2012-03-22 16:23
externalstore	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
filebackend	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
filerepo	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
gallery	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
htmlform	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
http	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
import	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
installer	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
interwiki	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
job	[ DIR ]	drwxr-xr-x	2012-03-22 16:23
jobqueue	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
json	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
libs	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
linker	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
logging	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
mail	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
media	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
normal	[ DIR ]	drwxr-xr-x	2012-03-22 16:23
objectcache	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
page	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
pager	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
parser	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
password	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
poolcounter	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
profiler	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
rcfeed	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
registration	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
resourceloader	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
revisiondelete	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
search	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
services	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
session	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
site	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
skins	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
specialpage	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
specials	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
templates	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
tidy	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
title	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
upload	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
user	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
utils	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
widget	[ DIR ]	drwxr-xr-x	2016-11-28 20:20
zhtable	[ DIR ]	drwxr-xr-x	2012-03-22 16:23
.htaccess	197 B	-r--r--r--	2026-08-22 08:29
Action.php	12.43 KB	-rw-r--r--	2011-09-16 17:01
AjaxDispatcher.php	4.03 KB	-rw-r--r--	2016-11-28 20:20
AjaxResponse.php	8.15 KB	-rw-r--r--	2016-11-28 20:20
Article.php	58.64 KB	-rw-r--r--	2011-11-15 20:46
AuthPlugin.php	9.2 KB	-rw-r--r--	2016-11-28 20:20
AutoLoader.php	3 KB	-rw-r--r--	2016-11-28 20:20
Autopromote.php	6.77 KB	-rw-r--r--	2016-11-28 20:20
BacklinkCache.php	9.03 KB	-rw-r--r--	2011-06-30 01:09
Block.php	41.97 KB	-rw-r--r--	2016-11-28 20:20
Category.php	10.34 KB	-rw-r--r--	2016-11-28 20:20
CategoryFinder.php	6.2 KB	-rw-r--r--	2016-11-28 20:20
CategoryPage.php	21.84 KB	-rw-r--r--	2011-10-28 23:20
CategoryViewer.php	22.5 KB	-rw-r--r--	2016-11-28 20:20
Categoryfinder.php	5.13 KB	-rw-r--r--	2011-05-19 02:03
Cdb.php	3.57 KB	-rw-r--r--	2011-05-28 20:58
Cdb_PHP.php	10.11 KB	-rw-r--r--	2011-05-28 19:51
ChangeTags.php	6.66 KB	-rw-r--r--	2011-07-09 11:01
ChangesFeed.php	5.82 KB	-rw-r--r--	2011-06-19 07:45
ChangesList.php	35.52 KB	-rw-r--r--	2011-10-25 23:51
Collation.php	9.86 KB	-rw-r--r--	2011-09-21 00:36
ConfEditor.php	29.16 KB	-rw-r--r--	2011-08-27 21:28
Cookie.php	6.17 KB	-rw-r--r--	2011-06-02 00:35
CryptRand.php	16.96 KB	-rw-r--r--	2012-03-21 11:43
DefaultSettings.php	265.47 KB	-rw-r--r--	2016-11-28 20:20
Defines.php	7.85 KB	-rw-r--r--	2016-11-28 20:20
DeprecatedGlobal.php	1.9 KB	-rw-r--r--	2016-11-28 20:20
DerivativeRequest.php	2.46 KB	-rw-r--r--	2016-11-28 20:20
DjVuImage.php	10.58 KB	-rw-r--r--	2011-05-18 00:03
DummyLinker.php	9.01 KB	-rw-r--r--	2016-11-28 20:20
EditPage.php	136.53 KB	-rw-r--r--	2016-11-28 20:20
EventRelayerGroup.php	1.27 KB	-rw-r--r--	2016-11-28 20:20
Exception.php	11.5 KB	-rw-r--r--	2011-10-22 04:34
Export.php	32.27 KB	-rw-r--r--	2011-11-24 02:29
ExternalEdit.php	2.45 KB	-rw-r--r--	2011-09-07 22:14
ExternalStore.php	4.29 KB	-rw-r--r--	2011-05-29 16:24
ExternalStoreDB.php	4.44 KB	-rw-r--r--	2011-10-17 00:24
ExternalStoreHttp.php	463 B	-rw-r--r--	2010-01-08 22:35
ExternalUser.php	8.96 KB	-rw-r--r--	2011-05-26 21:52
FakeTitle.php	6.6 KB	-rw-r--r--	2011-05-26 22:38
Fallback.php	5.49 KB	-rw-r--r--	2011-05-28 20:58
FauxRequest.php	5.66 KB	-rw-r--r--	2016-11-28 20:20
Feed.php	10.58 KB	-rw-r--r--	2016-11-28 20:20
FeedUtils.php	8.64 KB	-rw-r--r--	2016-11-28 20:20
FileDeleteForm.php	11.7 KB	-rw-r--r--	2016-11-28 20:20
ForkController.php	5.4 KB	-rw-r--r--	2016-11-28 20:20
FormOptions.php	11.08 KB	-rw-r--r--	2016-11-28 20:20
GenderCache.php	3.35 KB	-rw-r--r--	2011-09-19 14:58
GitInfo.php	10.74 KB	-rw-r--r--	2016-11-28 20:20
GlobalFunctions.php	106.76 KB	-rw-r--r--	2016-11-28 20:20
HTMLForm.php	49.55 KB	-rw-r--r--	2011-11-09 18:04
HistoryBlob.php	16.15 KB	-rw-r--r--	2016-11-28 20:20
HistoryPage.php	21.66 KB	-rw-r--r--	2011-09-16 16:12
Hooks.php	6.47 KB	-rw-r--r--	2016-11-28 20:20
Html.php	31.91 KB	-rw-r--r--	2016-11-28 20:20
HtmlFormatter.php	1015 B	-rw-r--r--	2016-11-28 20:20
HttpFunctions.old.php	319 B	-rw-r--r--	2011-05-28 17:59
HttpFunctions.php	21.28 KB	-rw-r--r--	2011-09-16 15:19
IP.php	21.58 KB	-rw-r--r--	2011-11-09 16:00
ImageFunctions.php	2.58 KB	-rw-r--r--	2011-05-29 16:24
ImageGallery.php	10.46 KB	-rw-r--r--	2011-07-16 01:18
ImagePage.php	36 KB	-rw-r--r--	2011-07-11 02:39
ImageQueryPage.php	1.5 KB	-rw-r--r--	2011-05-26 21:21
Import.php	33.63 KB	-rw-r--r--	2011-10-28 23:20
Init.php	4.67 KB	-rw-r--r--	2011-06-17 01:40
Licenses.php	4.89 KB	-rw-r--r--	2016-11-28 20:20
LinkFilter.php	6.08 KB	-rw-r--r--	2016-11-28 20:20
Linker.php	72.71 KB	-rw-r--r--	2016-11-28 20:20
LinksUpdate.php	23.7 KB	-rw-r--r--	2011-11-14 21:58
ListToggle.php	2.02 KB	-rw-r--r--	2016-11-28 20:20
LocalisationCache.php	29.31 KB	-rw-r--r--	2011-09-12 17:03
LogEventsList.php	32.56 KB	-rw-r--r--	2011-07-10 20:12
LogPage.php	16.09 KB	-rw-r--r--	2011-07-10 20:12
MWFunction.php	1.96 KB	-rw-r--r--	2011-03-22 21:23
MWGrants.php	5.85 KB	-rw-r--r--	2016-11-28 20:20
MWNamespace.php	13.76 KB	-rw-r--r--	2016-11-28 20:20
MWTimestamp.php	6.1 KB	-rw-r--r--	2016-11-28 20:20
MagicWord.php	15.1 KB	-rw-r--r--	2016-11-28 20:20
MagicWordArray.php	7.86 KB	-rw-r--r--	2016-11-28 20:20
MediaWiki.php	35.29 KB	-rw-r--r--	2016-11-28 20:20
MediaWikiServices.php	18.8 KB	-rw-r--r--	2016-11-28 20:20
MediaWikiVersionFetcher.php	746 B	-rw-r--r--	2016-11-28 20:20
MergeHistory.php	10.41 KB	-rw-r--r--	2016-11-28 20:20
Message.php	32.49 KB	-rw-r--r--	2016-11-28 20:20
MessageBlobStore.php	10.5 KB	-rw-r--r--	2011-05-28 00:42
Metadata.php	5.53 KB	-rw-r--r--	2011-06-30 00:09
MimeMagic.php	2.87 KB	-rw-r--r--	2016-11-28 20:20
MovePage.php	18.08 KB	-rw-r--r--	2016-11-28 20:20
Namespace.php	7.78 KB	-rw-r--r--	2011-05-21 21:07
NoLocalSettings.php	2.03 KB	-rw-r--r--	2016-11-28 20:20
OutputHandler.php	6.19 KB	-rw-r--r--	2016-11-28 20:20
OutputPage.php	113 KB	-rw-r--r--	2016-11-28 20:20
PHPVersionCheck.php	8.52 KB	-rw-r--r--	2016-11-28 20:20
PHPVersionError.php	2.96 KB	-rw-r--r--	2011-07-19 01:06
PageProps.php	8.52 KB	-rw-r--r--	2016-11-28 20:20
PageQueryPage.php	680 B	-rw-r--r--	2010-12-22 15:16
Pager.php	30.89 KB	-rw-r--r--	2011-07-06 04:26
PathRouter.php	12.43 KB	-rw-r--r--	2016-11-28 20:20
PatrolLog.php	2.53 KB	-rw-r--r--	2011-07-10 20:12
Pingback.php	7.31 KB	-rw-r--r--	2016-11-28 20:20
PoolCounter.php	5.65 KB	-rw-r--r--	2011-05-28 21:00
Preferences.php	51.21 KB	-rw-r--r--	2016-11-28 20:20
PrefixSearch.php	12.36 KB	-rw-r--r--	2016-11-28 20:20
ProtectionForm.php	19.56 KB	-rw-r--r--	2016-11-28 20:20
ProxyLookup.php	2.12 KB	-rw-r--r--	2016-11-28 20:20
ProxyTools.php	4.6 KB	-rw-r--r--	2011-09-07 22:14
QueryPage.php	22.76 KB	-rw-r--r--	2011-10-17 00:24
RawPage.php	6.2 KB	-rw-r--r--	2011-07-05 23:28
RecentChange.php	23.52 KB	-rw-r--r--	2011-08-27 21:28
RequestContext.php	7.85 KB	-rw-r--r--	2012-01-04 02:07
Revision.php	54.61 KB	-rw-r--r--	2016-11-28 20:20
RevisionList.php	9.25 KB	-rw-r--r--	2016-11-28 20:20
Sanitizer.php	58.04 KB	-rw-r--r--	2016-11-28 20:20
SeleniumWebSettings.php	6.3 KB	-rw-r--r--	2011-06-26 01:27
ServiceWiring.php	11.72 KB	-rw-r--r--	2016-11-28 20:20
Setup.php	27.89 KB	-rw-r--r--	2016-11-28 20:20
SiteConfiguration.php	18.34 KB	-rw-r--r--	2016-11-28 20:20
SiteStats.php	9.85 KB	-rw-r--r--	2016-11-28 20:20
Skin.php	42.13 KB	-rw-r--r--	2012-02-25 16:23
SkinLegacy.php	22.82 KB	-rw-r--r--	2011-10-20 22:50
SkinTemplate.php	64.93 KB	-rw-r--r--	2011-12-09 21:31
SpecialPage.php	31.23 KB	-rw-r--r--	2012-01-04 02:07
SpecialPageFactory.php	17.68 KB	-rw-r--r--	2011-10-28 23:20
SquidPurgeClient.php	10.02 KB	-rw-r--r--	2011-05-21 21:54
Status.php	12.63 KB	-rw-r--r--	2016-11-28 20:20
StreamFile.php	4.66 KB	-rw-r--r--	2016-11-28 20:20
StringUtils.php	11.32 KB	-rw-r--r--	2011-05-21 21:54
StubObject.php	6.4 KB	-rw-r--r--	2016-11-28 20:20
TemplateParser.php	6.46 KB	-rw-r--r--	2016-11-28 20:20
TemplatesOnThisPageFormatter.php	5.36 KB	-rw-r--r--	2016-11-28 20:20
Title.php	140.81 KB	-rw-r--r--	2016-11-28 20:20
TitleArray.php	1.83 KB	-rw-r--r--	2016-11-28 20:20
TitleArrayFromResult.php	1.95 KB	-rw-r--r--	2016-11-28 20:20
User.php	114.26 KB	-rw-r--r--	2012-03-21 11:43
UserArray.php	1.9 KB	-rw-r--r--	2011-05-28 17:59
UserMailer.php	20.52 KB	-rw-r--r--	2012-02-02 15:15
UserRightsProxy.php	5.38 KB	-rw-r--r--	2010-10-14 01:11
ViewCountUpdate.php	3.4 KB	-rw-r--r--	2011-06-25 21:13
WatchedItem.php	5.04 KB	-rw-r--r--	2016-11-28 20:20
WatchedItemQueryService.php	20.4 KB	-rw-r--r--	2016-11-28 20:20
WatchedItemStore.php	25.57 KB	-rw-r--r--	2016-11-28 20:20
WebRequest.php	37.68 KB	-rw-r--r--	2016-11-28 20:20
WebRequestUpload.php	3.4 KB	-rw-r--r--	2016-11-28 20:20
WebResponse.php	9.2 KB	-rw-r--r--	2016-11-28 20:20
WebStart.php	5.54 KB	-rw-r--r--	2016-11-28 20:20
Wiki.php	20.05 KB	-rw-r--r--	2012-01-03 18:34
WikiCategoryPage.php	898 B	-rw-r--r--	2011-08-27 21:28
WikiError.php	3.84 KB	-rw-r--r--	2011-05-06 23:09
WikiFilePage.php	3.34 KB	-rw-r--r--	2011-07-01 22:07
WikiMap.php	8.19 KB	-rw-r--r--	2016-11-28 20:20
WikiPage.php	78.59 KB	-rw-r--r--	2012-01-12 23:09
Xml.php	26.47 KB	-rw-r--r--	2016-11-28 20:20
XmlSelect.php	3.46 KB	-rw-r--r--	2016-11-28 20:20
XmlTypeCheck.php	2.45 KB	-rw-r--r--	2011-05-21 21:36
ZhClient.php	2.92 KB	-rw-r--r--	2011-05-29 16:25
ZhConversion.php	415 KB	-rw-r--r--	2011-10-27 23:40
ZipDirectoryReader.php	20.35 KB	-rw-r--r--	2011-05-13 18:16
limit.sh	2.86 KB	-rwxr-xr-x	2016-11-28 20:20
mime.info	3.82 KB	-rw-r--r--	2011-06-29 22:31
mime.types	5.18 KB	-rw-r--r--	2011-06-29 22:31
tidy.conf	413 B	-rw-r--r--	2009-10-25 14:43
wp-blog-header.php	2.74 KB	-r--r--r--	2026-08-22 08:29
wp-cron.php	2.74 KB	-rw-r--r--	2026-08-22 08:29

Rename

<?php
/**
 * DjVu image handler
 *
 * Copyright © 2006 Brion Vibber <brion@pobox.com>
 * http://www.mediawiki.org/
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 */

/**
 * Support for detecting/validating DjVu image files and getting
 * some basic file metadata (resolution etc)
 *
 * File format docs are available in source package for DjVuLibre:
 * http://djvulibre.djvuzone.org/
 *
 * @ingroup Media
 */
class DjVuImage {
	function __construct( $filename ) {
		$this->mFilename = $filename;
	}

/**
	 * Check if the given file is indeed a valid DjVu image file
	 * @return bool
	 */
	public function isValid() {
		$info = $this->getInfo();
		return $info !== false;
	}

/**
	 * Return data in the style of getimagesize()
	 * @return array or false on failure
	 */
	public function getImageSize() {
		$data = $this->getInfo();

if( $data !== false ) {
			$width  = $data['width'];
			$height = $data['height'];

return array( $width, $height, 'DjVu',
				"width=\"$width\" height=\"$height\"" );
		}
		return false;
	}

// ---------

/**
	 * For debugging; dump the IFF chunk structure
	 */
	function dump() {
		$file = fopen( $this->mFilename, 'rb' );
		$header = fread( $file, 12 );
		// @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
		extract( unpack( 'a4magic/a4chunk/NchunkLength', $header ) );
		echo "$chunk $chunkLength\n";
		$this->dumpForm( $file, $chunkLength, 1 );
		fclose( $file );
	}

private function dumpForm( $file, $length, $indent ) {
		$start = ftell( $file );
		$secondary = fread( $file, 4 );
		echo str_repeat( ' ', $indent * 4 ) . "($secondary)\n";
		while( ftell( $file ) - $start < $length ) {
			$chunkHeader = fread( $file, 8 );
			if( $chunkHeader == '' ) {
				break;
			}
			// @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
			extract( unpack( 'a4chunk/NchunkLength', $chunkHeader ) );
			echo str_repeat( ' ', $indent * 4 ) . "$chunk $chunkLength\n";

if( $chunk == 'FORM' ) {
				$this->dumpForm( $file, $chunkLength, $indent + 1 );
			} else {
				fseek( $file, $chunkLength, SEEK_CUR );
				if( $chunkLength & 1 == 1 ) {
					// Padding byte between chunks
					fseek( $file, 1, SEEK_CUR );
				}
			}
		}
	}

function getInfo() {
		wfSuppressWarnings();
		$file = fopen( $this->mFilename, 'rb' );
		wfRestoreWarnings();
		if( $file === false ) {
			wfDebug( __METHOD__ . ": missing or failed file read\n" );
			return false;
		}

$header = fread( $file, 16 );
		$info = false;

if( strlen( $header ) < 16 ) {
			wfDebug( __METHOD__ . ": too short file header\n" );
		} else {
			// @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
			extract( unpack( 'a4magic/a4form/NformLength/a4subtype', $header ) );

if( $magic != 'AT&T' ) {
				wfDebug( __METHOD__ . ": not a DjVu file\n" );
			} elseif( $subtype == 'DJVU' ) {
				// Single-page document
				$info = $this->getPageInfo( $file, $formLength );
			} elseif( $subtype == 'DJVM' ) {
				// Multi-page document
				$info = $this->getMultiPageInfo( $file, $formLength );
			} else  {
				wfDebug( __METHOD__ . ": unrecognized DJVU file type '$formType'\n" );
			}
		}
		fclose( $file );
		return $info;
	}

private function readChunk( $file ) {
		$header = fread( $file, 8 );
		if( strlen( $header ) < 8 ) {
			return array( false, 0 );
		} else {
			// @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
			extract( unpack( 'a4chunk/Nlength', $header ) );
			return array( $chunk, $length );
		}
	}

private function skipChunk( $file, $chunkLength ) {
		fseek( $file, $chunkLength, SEEK_CUR );

if( $chunkLength & 0x01 == 1 && !feof( $file ) ) {
			// padding byte
			fseek( $file, 1, SEEK_CUR );
		}
	}

private function getMultiPageInfo( $file, $formLength ) {
		// For now, we'll just look for the first page in the file
		// and report its information, hoping others are the same size.
		$start = ftell( $file );
		do {
			list( $chunk, $length ) = $this->readChunk( $file );
			if( !$chunk ) {
				break;
			}

if( $chunk == 'FORM' ) {
				$subtype = fread( $file, 4 );
				if( $subtype == 'DJVU' ) {
					wfDebug( __METHOD__ . ": found first subpage\n" );
					return $this->getPageInfo( $file, $length );
				}
				$this->skipChunk( $file, $length - 4 );
			} else {
				wfDebug( __METHOD__ . ": skipping '$chunk' chunk\n" );
				$this->skipChunk( $file, $length );
			}
		} while( $length != 0 && !feof( $file ) && ftell( $file ) - $start < $formLength );

wfDebug( __METHOD__ . ": multi-page DJVU file contained no pages\n" );
		return false;
	}

private function getPageInfo( $file, $formLength ) {
		list( $chunk, $length ) = $this->readChunk( $file );
		if( $chunk != 'INFO' ) {
			wfDebug( __METHOD__ . ": expected INFO chunk, got '$chunk'\n" );
			return false;
		}

if( $length < 9 ) {
			wfDebug( __METHOD__ . ": INFO should be 9 or 10 bytes, found $length\n" );
			return false;
		}
		$data = fread( $file, $length );
		if( strlen( $data ) < $length ) {
			wfDebug( __METHOD__ . ": INFO chunk cut off\n" );
			return false;
		}

// @todo FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
		extract( unpack(
			'nwidth/' .
			'nheight/' .
			'Cminor/' .
			'Cmajor/' .
			'vresolution/' .
			'Cgamma', $data ) );
		# Newer files have rotation info in byte 10, but we don't use it yet.

return array(
			'width' => $width,
			'height' => $height,
			'version' => "$major.$minor",
			'resolution' => $resolution,
			'gamma' => $gamma / 10.0 );
	}

/**
	 * Return an XML string describing the DjVu image
	 * @return string
	 */
	function retrieveMetaData() {
		global $wgDjvuToXML, $wgDjvuDump, $wgDjvuTxt;
		wfProfileIn( __METHOD__ );
		
		if ( isset( $wgDjvuDump ) ) {
			# djvudump is faster as of version 3.5
			# http://sourceforge.net/tracker/index.php?func=detail&aid=1704049&group_id=32953&atid=406583
			wfProfileIn( 'djvudump' );
			$cmd = wfEscapeShellArg( $wgDjvuDump ) . ' ' . wfEscapeShellArg( $this->mFilename );
			$dump = wfShellExec( $cmd );
			$xml = $this->convertDumpToXML( $dump );
			wfProfileOut( 'djvudump' );
		} elseif ( isset( $wgDjvuToXML ) ) {
			wfProfileIn( 'djvutoxml' );
			$cmd = wfEscapeShellArg( $wgDjvuToXML ) . ' --without-anno --without-text ' .
				wfEscapeShellArg( $this->mFilename );
			$xml = wfShellExec( $cmd );
			wfProfileOut( 'djvutoxml' );
		} else {
			$xml = null;
		}
		# Text layer
		if ( isset( $wgDjvuTxt ) ) { 
			wfProfileIn( 'djvutxt' );
			$cmd = wfEscapeShellArg( $wgDjvuTxt ) . ' --detail=page ' . wfEscapeShellArg( $this->mFilename ) ;
			wfDebug( __METHOD__.": $cmd\n" );
			$retval = '';
			$txt = wfShellExec( $cmd, $retval );
			wfProfileOut( 'djvutxt' );
			if( $retval == 0) {
				# Strip some control characters
				$txt = preg_replace( "/[\013\035\037]/", "", $txt );
				$reg = <<<EOR
					/$page\s[\d-]*\s[\d-]*\s[\d-]*\s[\d-]*\s*"
					((?>    # Text to match is composed of atoms of either:
					  \\\\. # - any escaped character 
					  |     # - any character different from " and \
					  [^"\\\\]+
					)*?)
					"\s*$
					| # Or page can be empty ; in this case, djvutxt dumps ()
					$\s*()$/sx
EOR;
				$txt = preg_replace_callback( $reg, array( $this, 'pageTextCallback' ), $txt );
				$txt = "<DjVuTxt>\n<HEAD></HEAD>\n<BODY>\n" . $txt . "</BODY>\n</DjVuTxt>\n";
				$xml = preg_replace( "/<DjVuXML>/", "<mw-djvu><DjVuXML>", $xml, 1 );
				$xml = $xml . $txt. '</mw-djvu>' ;
			}
		}
		wfProfileOut( __METHOD__ );
		return $xml;
	}

function pageTextCallback( $matches ) {
		# Get rid of invalid UTF-8, strip control characters
		return '<PAGE value="' . htmlspecialchars( UtfNormal::cleanUp( $matches[1] ) ) . '" />';
	}

/**
	 * Hack to temporarily work around djvutoxml bug
	 */
	function convertDumpToXML( $dump ) {
		if ( strval( $dump ) == '' ) {
			return false;
		}

$xml = <<<EOT
<?xml version="1.0" ?>
<!DOCTYPE DjVuXML PUBLIC "-//W3C//DTD DjVuXML 1.1//EN" "pubtext/DjVuXML-s.dtd">
<DjVuXML>
<HEAD></HEAD>
<BODY>
EOT;

$dump = str_replace( "\r", '', $dump );
		$line = strtok( $dump, "\n" );
		$m = false;
		$good = false;
		if ( preg_match( '/^( *)FORM:DJVU/', $line, $m ) ) {
			# Single-page
			if ( $this->parseFormDjvu( $line, $xml ) ) {
				$good = true;
			} else {
				return false;
			}
		} elseif ( preg_match( '/^( *)FORM:DJVM/', $line, $m ) ) {
			# Multi-page
			$parentLevel = strlen( $m[1] );
			# Find DIRM
			$line = strtok( "\n" );
			while ( $line !== false ) {
				$childLevel = strspn( $line, ' ' );
				if ( $childLevel <= $parentLevel ) {
					# End of chunk
					break;
				}

if ( preg_match( '/^ *DIRM.*indirect/', $line ) ) {
					wfDebug( "Indirect multi-page DjVu document, bad for server!\n" );
					return false;
				}
				if ( preg_match( '/^ *FORM:DJVU/', $line ) ) {
					# Found page
					if ( $this->parseFormDjvu( $line, $xml ) ) {
						$good = true;
					} else {
						return false;
					}
				}
				$line = strtok( "\n" );
			}
		}
		if ( !$good ) {
			return false;
		}

$xml .= "</BODY>\n</DjVuXML>\n";
		return $xml;
	}

function parseFormDjvu( $line, &$xml ) {
		$parentLevel = strspn( $line, ' ' );
		$line = strtok( "\n" );

# Find INFO
		while ( $line !== false ) {
			$childLevel = strspn( $line, ' ' );
			if ( $childLevel <= $parentLevel ) {
				# End of chunk
				break;
			}

if ( preg_match( '/^ *INFO *\[\d*\] *DjVu *(\d+)x(\d+), *\w*, *(\d+) *dpi, *gamma=([0-9.-]+)/', $line, $m ) ) {
				$xml .= Xml::tags( 'OBJECT',
					array(
						#'data' => '',
						#'type' => 'image/x.djvu',
						'height' => $m[2],
						'width' => $m[1],
						#'usemap' => '',
					),
					"\n" .
					Xml::element( 'PARAM', array( 'name' => 'DPI', 'value' => $m[3] ) ) . "\n" .
					Xml::element( 'PARAM', array( 'name' => 'GAMMA', 'value' => $m[4] ) ) . "\n"
				) . "\n";
				return true;
			}
			$line = strtok( "\n" );
		}
		# Not found
		return false;
	}
}