[PDFBOX-5830] NullPointerException: Cannot invoke "String.codePointAt(int)" because "uni" is null

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.31, 3.0.2 PDFBox
• Fix Version/s: 2.0.32, 3.0.3 PDFBox, 4.0.0
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 27/May/24 18:17
• Updated: 24/Jul/24 16:02
• Resolved: 27/May/24 18:23

Description

As reported to me by T.G.

Exception in thread "main" java.lang.NullPointerException: Cannot invoke "String.codePointAt(int)" because "uni" is null

	at org.apache.pdfbox.pdmodel.font.PDTrueTypeFontEmbedder.setWidths(PDTrueTypeFontEmbedder.java:102)

This happens when an existing encoding is passed to PDTrueTypeFont.load() with the 3rd parameter being an existing encoding "with differences" from another font and this encoding has a ".notdef", because this isn't in the Adobe glyph list. The whole thing is done to replace a simple not embedded font with a hopefully equivalent embedded font.

Solution: assume GID 0 for such cases.