From 27624af90a66340aac3f90cc5a035efdb280121d Mon Sep 17 00:00:00 2001
From: Jens Frank <jeluf@users.mediawiki.org>
Date: Sun, 13 Aug 2006 21:09:20 +0000
Subject: [PATCH] DJVU rendering: Handle old DB metadata entries

---
 includes/Image.php | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/includes/Image.php b/includes/Image.php
index 743e1b82f9..f329fedd92 100644
--- a/includes/Image.php
+++ b/includes/Image.php
@@ -2257,13 +2257,21 @@ class Image
 			$this->load();
 		}
 		if ( ! isset( $this->multiPageXML ) ) {
-			$this->multiPageXML = new SimpleXMLElement( $this->metadata );
+			$this->initializeMultiPageXML();
 		}
 		$o = $this->multiPageXML->BODY[0]->OBJECT[$page-1];
 		$this->height = intval( $o['height'] );
 		$this->width = intval( $o['width'] );
 	}
 
+	function initializeMultiPageXML() {
+		if ( $this->metadata == '0' ) {
+			$deja = new DjVuImage( $this->imagePath );
+			$this->metadata = $deja->retrieveMetaData();
+		}
+		$this->multiPageXML = new SimpleXMLElement( $this->metadata );
+	}
+
 	/**
 	 * Returns 'true' if this image is a multipage document, e.g. a DJVU
 	 * document.
@@ -2283,7 +2291,7 @@ class Image
 			return null;
 		}
 		if ( ! isset( $this->multiPageXML ) ) {
-			$this->multiPageXML = new SimpleXMLElement( $this->metadata );
+			$this->initializeMultiPageXML();
 		}
 		return count( $this->multiPageXML->xpath( '//OBJECT' ) );
 	}
-- 
2.20.1