[PDFBOX-3708] hasGlyph() contradicts encode()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.4, 3.0.0 PDFBox
• Fix Version/s: 2.0.5, 3.0.0 PDFBox
• External issue URL: https://stackoverflow.com/questions/42584459/pdfbox-hasglyph-returns-true-for-unsupported-unicode-control-characters
• Assignee: Unassigned
• Reporter: Tilman Hausherr
• Created: 03/Mar/17 21:01
• Updated: 25/Mar/17 18:13
• Resolved: 05/Mar/17 10:30

Description

        PDDocument doc = new PDDocument();
        PDType0Font font = PDType0Font.load(doc, new FileInputStream("c:/windows/fonts/arial.ttf"));
        System.out.println(font.hasGlyph('\n'));
        PDPage page = new PDPage();
        doc.addPage(page);
        PDPageContentStream cs = new PDPageContentStream(doc, page);
        cs.beginText();
        cs.setFont(font, 100);
        cs.showText("\n");

The output:

true
Exception in thread "main" java.lang.IllegalArgumentException: No glyph for U+000A in font ArialMT
	at org.apache.pdfbox.pdmodel.font.PDCIDFontType2.encode(PDCIDFontType2.java:402)
	at org.apache.pdfbox.pdmodel.font.PDType0Font.encode(PDType0Font.java:351)
	at org.apache.pdfbox.pdmodel.font.PDFont.encode(PDFont.java:316)
	at org.apache.pdfbox.pdmodel.PDPageContentStream.showText(PDPageContentStream.java:362)

Either this is a bug in hasGlyph(), or it is a documentation (javadoc) problem, e.g. because the parameter to hasGlyph isn't a character code but something else, then this should be clarified.