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https://issues.apache.org/jira/browse/PDFBOX-856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Lehmkühler resolved PDFBOX-856.
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Resolution: Fixed
Assignee: Andreas Lehmkühler
Thanks! I added the patch in revision 1023531
> NPE from PDPageLabels with a large number PDPageLabelRanges
> -----------------------------------------------------------
>
> Key: PDFBOX-856
> URL: https://issues.apache.org/jira/browse/PDFBOX-856
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.2.1
> Reporter: Kevin Jackson
> Assignee: Andreas Lehmkühler
>
> Section 3.8.6 states that number trees have either "Nums" or "Kids" entries.
> The current PDPageLabels does not handle Kids and fails with a NPE.
> Fix:
> public PDPageLabels(PDDocument document, COSDictionary dict) throws
> IOException
> {
> this(document);
> if (dict == null)
> {
> return;
> }
> PDNumberTreeNode root = new PDNumberTreeNode(dict,
> COSDictionary.class);
> findLabels(root);
> }
> private void findLabels(PDNumberTreeNode node) throws IOException {
> if (node.getKids() != null) {
> @SuppressWarnings("unchecked")
> List<PDNumberTreeNode> kids = node.getKids();
> for (PDNumberTreeNode kid : kids) {
> findLabels(kid);
> }
> }
> else if (node.getNumbers() != null) {
> @SuppressWarnings("unchecked")
> Map<Integer, COSDictionary> numbers = node.getNumbers();
> for (Entry<Integer, COSDictionary> i : numbers.entrySet())
> {
> labels.put(i.getKey(), new PDPageLabelRange(i.getValue()));
> }
> }
> }
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