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https://issues.apache.org/jira/browse/PDFBOX-4336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16643775#comment-16643775
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Tilman Hausherr commented on PDFBOX-4336:
-----------------------------------------
The PDF has a code that isn't part of the CMap and the exception message is not
helpful. We can be more lenient and just return 0.
> "CMap is invalid" exception thrown
> ----------------------------------
>
> Key: PDFBOX-4336
> URL: https://issues.apache.org/jira/browse/PDFBOX-4336
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.11, 2.0.12
> Reporter: Nico Prenzel
> Priority: Minor
> Fix For: 2.0.13, 3.0.0 PDFBox
>
> Attachments: test.pdf
>
>
> The follwoing error is thrown within the preview generation. With Adobe
> Reader or Foxit the file is able to open and correctly shown.
>
> CMap is invalid
> org.apache.fontbox.cmap.CMap readCode: 123
> org.apache.pdfbox.pdmodel.font.PDType0Font readCode: 521
> org.apache.pdfbox.contentstream.PDFStreamEngine showText: 699
> org.apache.pdfbox.contentstream.PDFStreamEngine showTextString: 595
> org.apache.pdfbox.contentstream.operator.text.ShowText process: 55
> org.apache.pdfbox.contentstream.PDFStreamEngine processOperator: 848
> org.apache.pdfbox.contentstream.PDFStreamEngine processStreamOperators: 503
> org.apache.pdfbox.contentstream.PDFStreamEngine processStream: 477
> org.apache.pdfbox.contentstream.PDFStreamEngine processPage: 150
> org.apache.pdfbox.rendering.PageDrawer drawPage: 254
> org.apache.pdfbox.rendering.PDFRenderer renderImage: 245
> org.apache.pdfbox.rendering.PDFRenderer renderImageWithDPI: 179
> vlh.Tools.PDF.PDFBoxUtil generateImage: 863
> vlh.notes.BSTArchive.File.pdf.PdfFileExtend generatePreviewImage: 170
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