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https://issues.apache.org/jira/browse/PDFBOX-4768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17032556#comment-17032556
]
Tim Allison commented on PDFBOX-4768:
-------------------------------------
To complement Tilman's points...qpdf complains about this file:
{noformat}
WARNING: kst-31430-3-b3_unextractable.pdf: file is damaged
WARNING: kst-31430-3-b3_unextractable.pdf (offset 638658): xref not found
WARNING: kst-31430-3-b3_unextractable.pdf: Attempting to reconstruct
cross-reference table
WARNING: kst-31430-3-b3_unextractable.pdf (object 123 0, offset 214900):
expected endstream
WARNING: kst-31430-3-b3_unextractable.pdf (object 123 0, offset 211564):
attempting to recover stream length
WARNING: kst-31430-3-b3_unextractable.pdf (object 123 0, offset 211564):
recovered stream length: 13564
qpdf: operation succeeded with warnings; resulting file may have some problems
{noformat}
Tika's exception is:
{noformat}
Caused by: java.io.IOException: Unknown dir object c=')' cInt=41 peek=')'
peekInt=41 at offset 8689
at
org.apache.pdfbox.pdfparser.BaseParser.parseDirObject(BaseParser.java:966)
at
org.apache.pdfbox.pdfparser.BaseParser.parseCOSArray(BaseParser.java:636)
at
org.apache.pdfbox.pdfparser.PDFStreamParser.parseNextToken(PDFStreamParser.java:175)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:513)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:480)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:153)
at
org.apache.pdfbox.text.LegacyPDFStreamEngine.processPage(LegacyPDFStreamEngine.java:139)
at
org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:391)
at org.apache.tika.parser.pdf.PDF2XHTML.processPage(PDF2XHTML.java:153)
at
org.apache.tika.parser.pdf.AbstractPDF2XHTML.processPages(AbstractPDF2XHTML.java:867)
at
org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:266)
at org.apache.tika.parser.pdf.PDF2XHTML.process(PDF2XHTML.java:124)
{noformat}
> Unable to extract text from PDF
> -------------------------------
>
> Key: PDFBOX-4768
> URL: https://issues.apache.org/jira/browse/PDFBOX-4768
> Project: PDFBox
> Issue Type: Bug
> Components: Text extraction
> Affects Versions: 2.0.18
> Reporter: Jan Vlug
> Priority: Major
> Attachments: kst-31430-3-b3_unextractable.pdf
>
>
> I have a PDF document (see attachment) that can be viewed in Evince, but tika
> text extraction does not work. I think that this is due to a crash in pdfbox.
> I'm also a bit puzzled by the message: "You do not have permission to extract
> text".
> Here the output of the ExtractText command:
> {{java -jar pdfbox-app-2.0.19-20200206.060243-86.jar ExtractText
> kst-31430-3-b3_unextractable.pdf tekst_jan.txt}}
> {{Feb 07, 2020 11:03:15 AM org.apache.pdfbox.pdfparser.COSParser
> validateStreamLength}}
> {{WARNING: The end of the stream doesn't point to the correct offset, using
> workaround to read the stream, stream start position: 211564, length: 3336,
> expected end position: 214900}}
> {{Feb 07, 2020 11:03:15 AM org.apache.pdfbox.pdfparser.COSParser
> parseCOSStream}}
> {{WARNING: stream ends with 'endobj' instead of 'endstream' at offset 225134}}
> {{Exception in thread "main" java.io.IOException: You do not have permission
> to extract text}}
> {{ at
> org.apache.pdfbox.tools.ExtractText.startExtraction(ExtractText.java:223)}}
> {{ at org.apache.pdfbox.tools.ExtractText.main(ExtractText.java:97)}}
> {{ at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:60)}}
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