<?php
-
/**
- * @addtogroup Media
+ * Handler for DjVu images
+ *
+ * @file
+ * @ingroup Media
+ */
+
+/**
+ * Handler for DjVu images
+ *
+ * @ingroup Media
*/
class DjVuHandler extends ImageHandler {
function isEnabled() {
}
}
- function mustRender() { return true; }
- function isMultiPage() { return true; }
+ function mustRender( $file ) { return true; }
+ function isMultiPage( $file ) { return true; }
function getParamMap() {
return array(
function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
global $wgDjvuRenderer, $wgDjvuPostProcessor;
- // Fetch XML and check it, to give a more informative error message than the one which
+ // Fetch XML and check it, to give a more informative error message than the one which
// normaliseParams will inevitably give.
$xml = $image->getMetadata();
if ( !$xml ) {
- return new MediaTransformError( 'thumbnail_error', @$params['width'], @$params['height'],
+ return new MediaTransformError( 'thumbnail_error', @$params['width'], @$params['height'],
wfMsg( 'djvu_no_xml' ) );
}
-
+
if ( !$this->normaliseParams( $image, $params ) ) {
return new TransformParameterError( $params );
}
if ( $page > $this->pageCount( $image ) ) {
return new MediaTransformError( 'thumbnail_error', $width, $height, wfMsg( 'djvu_page_error' ) );
}
-
+
if ( $flags & self::TRANSFORM_LATER ) {
return new ThumbnailImage( $image, $dstUrl, $width, $height, $dstPath, $page );
}
return new MediaTransformError( 'thumbnail_error', $width, $height, wfMsg( 'thumbnail_dest_directory' ) );
}
- # Use a subshell (brackets) to aggregate stderr from both pipeline commands
+ # Use a subshell (brackets) to aggregate stderr from both pipeline commands
# before redirecting it to the overall stdout. This works in both Linux and Windows XP.
$cmd = '(' . wfEscapeShellArg( $wgDjvuRenderer ) . " -format=ppm -page={$page} -size={$width}x{$height} " .
wfEscapeShellArg( $srcPath );
$cmd .= ' > ' . wfEscapeShellArg($dstPath) . ') 2>&1';
wfProfileIn( 'ddjvu' );
wfDebug( __METHOD__.": $cmd\n" );
+ $retval = '';
$err = wfShellExec( $cmd, $retval );
wfProfileOut( 'ddjvu' );
/**
* Cache a document tree for the DjVu XML metadata
*/
- function getMetaTree( $image ) {
+ function getMetaTree( $image , $gettext = false ) {
if ( isset( $image->dejaMetaTree ) ) {
return $image->dejaMetaTree;
}
wfSuppressWarnings();
try {
- $image->dejaMetaTree = new SimpleXMLElement( $metadata );
- } catch( Exception $e ) {
- wfDebug( "Bogus multipage XML metadata on '$image->name'\n" );
// Set to false rather than null to avoid further attempts
$image->dejaMetaTree = false;
+ $image->djvuTextTree = false;
+ $tree = new SimpleXMLElement( $metadata );
+ if( $tree->getName() == 'mw-djvu' ) {
+ foreach($tree->children() as $b){
+ if( $b->getName() == 'DjVuTxt' ) {
+ $image->djvuTextTree = $b;
+ }
+ else if ( $b->getName() == 'DjVuXML' ) {
+ $image->dejaMetaTree = $b;
+ }
+ }
+ } else {
+ $image->dejaMetaTree = $tree;
+ }
+ } catch( Exception $e ) {
+ wfDebug( "Bogus multipage XML metadata on '$image->name'\n" );
}
wfRestoreWarnings();
wfProfileOut( __METHOD__ );
- return $image->dejaMetaTree;
+ if( $gettext ) {
+ return $image->djvuTextTree;
+ } else {
+ return $image->dejaMetaTree;
+ }
}
function getImageSize( $image, $path ) {
return $this->getDjVuImage( $image, $path )->getImageSize();
}
- function getThumbType( $ext, $mime ) {
+ function getThumbType( $ext, $mime, $params = null ) {
global $wgDjvuOutputExtension;
static $mime;
if ( !isset( $mime ) ) {
return false;
}
}
-}
+ function getPageText( $image, $page ){
+ $tree = $this->getMetaTree( $image, true );
+ if ( !$tree ) {
+ return false;
+ }
+ $o = $tree->BODY[0]->PAGE[$page-1];
+ if ( $o ) {
+ $txt = $o['value'];
+ return $txt;
+ } else {
+ return false;
+ }
+
+ }
+
+}