Fix containsStructureDestination for PDAction

src/main/java/org/verapdf/pd/PDDestination.java

@@ -0,0 +1,79 @@
+/**
+ * This file is part of veraPDF Parser, a module of the veraPDF project.
+ * Copyright (c) 2015, veraPDF Consortium <[email protected]>
+ * All rights reserved.
+ *
+ * veraPDF Parser is free software: you can redistribute it and/or modify
+ * it under the terms of either:
+ *
+ * The GNU General public license GPLv3+.
+ * You should have received a copy of the GNU General Public License
+ * along with veraPDF Parser as the LICENSE.GPL file in the root of the source
+ * tree.  If not, see http://www.gnu.org/licenses/ or
+ * https://www.gnu.org/licenses/gpl-3.0.en.html.
+ *
+ * The Mozilla Public License MPLv2+.
+ * You should have received a copy of the Mozilla Public License along with
+ * veraPDF Parser as the LICENSE.MPL file in the root of the source tree.
+ * If a copy of the MPL was not distributed with this file, you can obtain one at
+ * http://mozilla.org/MPL/2.0/.
+ */
+package org.verapdf.pd;
+
+import org.verapdf.as.ASAtom;
+import org.verapdf.cos.COSObjType;
+import org.verapdf.cos.COSObject;
+import org.verapdf.tools.StaticResources;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * @author Maxim Plushchov
+ */
+public class PDDestination extends PDObject {
+
+	public static final Logger LOGGER = Logger.getLogger(PDDestination.class.getCanonicalName());
+
+	public PDDestination(COSObject obj) {
+		super(obj);
+	}
+
+	public Boolean getIsStructDestination() {
+		COSObject destination = getObject();
+		if (destination.getType() == COSObjType.COS_STRING) {
+			PDNamesDictionary namesDictionary = StaticResources.getDocument().getCatalog().getNamesDictionary();
+			if (namesDictionary == null) {
+				return false;
+			}
+			PDNameTreeNode dests = namesDictionary.getDests();
+			if (dests != null) {
+				COSObject dest = dests.getObject(destination.getString());
+				if (dest == null) {
+					LOGGER.log(Level.WARNING, "Named destination " + destination.getString() +
+							" not found in the Dests name tree in the Names dictionary");
+					return false;
+				}
+				destination = dest;
+			}
+		} else if (destination.getType() == COSObjType.COS_NAME) {
+			COSObject dests = StaticResources.getDocument().getCatalog().getDests();
+			if (dests != null) {
+				COSObject dest = dests.getKey(destination.getName());
+				if (dest == null) {
+					LOGGER.log(Level.WARNING, "Named destination " + destination.getName() +
+							" not found in the Dests dictionary in the catalog");
+					return false;
+				}
+				destination = dest;
+			}
+		}
+		if (destination.getType() == COSObjType.COS_DICT) {
+			return destination.knownKey(ASAtom.SD);
+		}
+		if (destination.getType() == COSObjType.COS_ARRAY && destination.size() > 0) {
+			return destination.at(0).knownKey(ASAtom.S);
+		}
+		return false;
+	}
+}

src/main/java/org/verapdf/pd/actions/PDAction.java

@@ -25,6 +25,7 @@
 import org.verapdf.cos.COSNumber;
 import org.verapdf.cos.COSObjType;
 import org.verapdf.cos.COSObject;
+import org.verapdf.pd.PDDestination;
 import org.verapdf.pd.PDObject;
 
 import java.util.ArrayList;
@@ -93,7 +94,15 @@ public COSObject getStructureDestination() {
 	}
 
 	public boolean containsStructureDestination() {
-		return getObject().knownKey(ASAtom.SD);
+		if (getObject().knownKey(ASAtom.SD)) {
+			return true;
+		}
+		if (getObject().knownKey(ASAtom.D)) {
+			COSObject d = getDestination();
+			if (d.getType() == COSObjType.COS_NAME || d.getType() == COSObjType.COS_STRING) {
+				return new PDDestination(d).getIsStructDestination();
+			}
+		}
+		return false;
 	}
-
 }