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https://issues.apache.org/jira/browse/PDFBOX-3162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15107053#comment-15107053
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Philip Helger commented on PDFBOX-3162:
---------------------------------------
Easiest way to get this error (even if this is not what I did):
Calling "setFont" without any "showText"
{code}
final PDPageContentStream contents = new PDPageContentStream (doc, page);
contents.beginText ();
contents.setFont (PDType0Font.load (doc,
EFontResource.OPEN_SANS_NORMAL.getFontResource ().getInputStream ()),
12);
contents.endText ();
contents.close ();
{code}
So maybe catching if a font has anything to embed is a good idea anyway....
> IllegalStateException in TTFSubsetter
> -------------------------------------
>
> Key: PDFBOX-3162
> URL: https://issues.apache.org/jira/browse/PDFBOX-3162
> Project: PDFBox
> Issue Type: Bug
> Components: FontBox
> Affects Versions: 2.0.0
> Environment: 2.0.0-RC2
> Reporter: Philip Helger
> Attachments: OpenSans-Bold.ttf, OpenSans-Regular.ttf,
> variables-on-error.png
>
>
> Hi encountered a rare exception with an empty TTF subset:
> {code}
> ==> [1] caused by java.lang.IllegalStateException: subset is empty
> 1.: org.apache.fontbox.ttf.TTFSubsetter.writeToStream(TTFSubsetter.java:921)
> 2.:
> org.apache.pdfbox.pdmodel.font.TrueTypeEmbedder.subset(TrueTypeEmbedder.java:304)
> 3.: org.apache.pdfbox.pdmodel.font.PDType0Font.subset(PDType0Font.java:162)
> 4.: org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1102)
> 5.: com.helger.pdflayout.PageLayoutPDF.renderTo(PageLayoutPDF.java:276)
> {code}
> Unfortunately I don't know yet what was causing the problem, but I will
> provide you with more details on Monday (if necessary).
> If there is nothing to subset - I think the call should simply be ignored???
> Or maybe this is a problem because of the "uni" name bug (in 2.0.0-RC2) I
> reopened lately?
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