Merge pull request #331 from veraPDF/null_pointer

Fix NullPointerException in getParentLang in PBoxPDStructElem
veraPDF · Nov 9, 2023 · 44ca681 · 44ca681
2 parents 511ab37 + 16834ec
commit 44ca681
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
@@ -168,15 +168,18 @@ public String getstandardType() {
 
 	@Override
 	public String getparentLang() {
-		COSString baseLang = null;
-		Set<COSObjectKey> keys = new HashSet<>();
-		COSObjectKey key;
 		COSDictionary parentDict = (COSDictionary)((COSDictionary) this.simplePDObject).getDictionaryObject(COSName.P);
+		if (parentDict == null) {
+			return null;
+		}
 		PDStructureNode structureParent = PDStructureNode.create(parentDict);
 		PDStructureElement parent = null;
 		if (structureParent instanceof PDStructureElement) {
 			parent = (PDStructureElement) structureParent;
 		}
+		COSString baseLang = null;
+		Set<COSObjectKey> keys = new HashSet<>();
+		COSObjectKey key;
 		while (baseLang == null && parent != null) {
 			key = parent.getCOSObject().getKey();
 			if (keys.contains(key)){