[jira] [Updated] (PDFBOX-2923) CFFParser parser treats CIDFont's charset data as SID

["Petras (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-2923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Petras updated PDFBOX-2923:
---------------------------
    Affects Version/s: 1.8.10

> CFFParser parser treats CIDFont's charset data as SID
> -----------------------------------------------------
>
>                 Key: PDFBOX-2923
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-2923
>             Project: PDFBox
>          Issue Type: Bug
>          Components: FontBox
>    Affects Versions: 1.8.10
>            Reporter: Petras
>         Attachments: MyriadPro-Regular.cff
>
>
> As stated in Compact Font File specification:
> {quote}
> The charset data, although in the same format as non-CIDFonts, will represent CIDs rather than SIDs, i.e. charstrings are “named” by CIDs in a CIDFont.
> {quote}
> Unfortunately, {{CFFParser}} does not consider this specific and always treat charset data as SID: is looking for SID referenced text in _String INDEX_ structure. Since such SID-indexed string does not exist there, it sets the name of the glyph to "{{.ndef}}".
> Consequently, {{CFFParser}} fails to register correct charstrings, as it associates glyph names to them using a map. As there can be several charstrings, only the last charstring entry is retained.
> Then also {{CFFFont.getWidth()}} method fails to return correct width of the given CID as correct link between CID and charstring is lost.



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