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https://issues.apache.org/jira/browse/TIKA-3332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17306412#comment-17306412
]
Tilman Hausherr commented on TIKA-3332:
---------------------------------------
this segment
{code:java}
Map<String, PDComplexFileSpecification> embeddedFileNames =
efTree.getNames();
//For now, try to get the embeddedFileNames out of embeddedFiles or its
kids.
//This code follows: pdfbox/examples/pdmodel/ExtractEmbeddedFiles.java
//If there is a need we could add a fully recursive search to find a
non-null
//Map<String, COSObjectable> that contains the doc info.
if (embeddedFileNames != null) {
processEmbeddedDocNames(embeddedFileNames);
} else {
List<PDNameTreeNode<PDComplexFileSpecification>> kids =
efTree.getKids();
if (kids == null) {
return;
}
for (PDNameTreeNode<PDComplexFileSpecification> node : kids) {
embeddedFileNames = node.getNames();
if (embeddedFileNames != null) {
processEmbeddedDocNames(embeddedFileNames);
}
}
}
{code:java}
should be extracted so that it is something like
{{extractFilesFromEFTree(PDNameTreeNode efTree....)}} and this segment
{code}
for (PDNameTreeNode<PDComplexFileSpecification> node : kids) {
embeddedFileNames = node.getNames();
if (embeddedFileNames != null) {
processEmbeddedDocNames(embeddedFileNames);
}
{code}
should be changed to
{code}
for (PDNameTreeNode<PDComplexFileSpecification> node : kids)
{
extractFilesFromEFTree(node, .....);
}
{code}
> Embedded files not extracted from PDF files with multilevel EmbeddedFiles tree
> ------------------------------------------------------------------------------
>
> Key: TIKA-3332
> URL: https://issues.apache.org/jira/browse/TIKA-3332
> Project: Tika
> Issue Type: Bug
> Affects Versions: 1.25
> Reporter: Ross Johnson
> Priority: Major
> Attachments: Screen Shot 2021-03-22 at 10.29.51 AM.png, Screenshot
> (5).png, image-2021-03-20-13-36-48-525.png
>
>
> I have come across some portfolio PDFs that have many attachments / embedded
> files, but Tika is not detecting or extracting them as it does with some
> other portfolio PDFs. The issue may be that these files have a multilevel
> EmbeddedFiles name tree that is not being handled properly by PDFBox.
> Here is the EmbeddedFiles structure of one of the PDF portfolios in question.
> Notice that the root EmbeddedFiles dictionary has a Kids array that only
> consists of intermediate dictionaries, with the actual Names array being one
> more level down.
> !image-2021-03-20-13-36-48-525.png!
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