[PDFBOX-3826] NPE if RAFDataStream.getCurrentPosition() when TrueTypeFont created from file is reused

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.6
• Fix Version/s: 2.0.7, 3.0.0 PDFBox
• Component/s: FontBox
• Labels: regression
• Assignee: Andreas Lehmkühler
• Reporter: Tilman Hausherr
• Created: 11/Jun/17 13:38
• Updated: 21/Jul/17 04:40
• Resolved: 17/Jul/17 10:02

Description

java.lang.NullPointerException: null
	at org.apache.fontbox.ttf.RAFDataStream.getCurrentPosition(RAFDataStream.java:88)
	at org.apache.fontbox.ttf.TrueTypeFont.getTableBytes(TrueTypeFont.java:121)
	at org.apache.fontbox.ttf.TTFSubsetter.writeToStream(TTFSubsetter.java:1012)
	at org.apache.pdfbox.pdmodel.font.TrueTypeEmbedder.subset(TrueTypeEmbedder.java:329)
	at org.apache.pdfbox.pdmodel.font.PDType0Font.subset(PDType0Font.java:162)
	at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1275)
	at org.apache.pdfbox.pdmodel.font.PDFontTest.testMultipleFontFileReuse(PDFontTest.java:160)

    @Test
    public void testMultipleFontFileReuse() throws IOException, URISyntaxException
    {
        URL url = PDFontTest.class.getClassLoader().getResource(
                "org/apache/pdfbox/ttf/LiberationSans-Regular.ttf");
        File file = new File(url.toURI());

        TrueTypeFont ttf = new TTFParser().parse(file);

        for (int i = 0; i < 32; ++i)
        {
            try (PDDocument doc = new PDDocument())
            {
                PDPage page = new PDPage();
                doc.addPage(page);
                PDFont font = PDType0Font.load(doc, ttf, true);
                try (PDPageContentStream cs = new PDPageContentStream(doc, page))
                {
                    cs.beginText();
                    cs.setFont(font, 10);
                    cs.showText("testMultipleFontFileReuse");
                    cs.endText();
                }
                doc.save(new ByteArrayOutputStream());
            }
        }
    }

This happens only if the TrueTypeFont is created from a file, not when it is created from a stream (PDFBOX-3337). It worked in 2.0.0 but no longer since 2.0.1.

Issue Links

• is related to: PDFBOX-3873 Fix text comparison in PDFontTest
• relates to: PDFBOX-3337 Regression: NullPointerException in subsetting