Petr Slaby created PDFBOX-4038:
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Summary: CFF font Blue values and other delta encoded lists read
incorrectly
Key: PDFBOX-4038
URL: https://issues.apache.org/jira/browse/PDFBOX-4038
Project: PDFBox
Issue Type: Bug
Components: FontBox
Affects Versions: 2.0.8
Reporter: Petr Slaby
Attachments: BlueValuesTest.java, CFFParser.java.patch
The attached test compares the values retrieved via CFFParser from an OpenType
font with the expected values as seen in FontForge (go to Element->Font
Info->PS Private).
The font NeoSans Black.otf can be found at https://www.wfonts.com/font/neosans
The CFF font specification explaining the encoding of the entries which are
incorrectly parsed by FontBox CFFParser can be found here
https://typekit.files.wordpress.com/2013/05/5176.cff.pdf
We use FontBox to read the font when we need to embed it into an PDF which we
produce via our Apache FOP based software. Adobe validator complains about
incorrect "Blue values" sorting then.
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