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https://issues.apache.org/jira/browse/PDFBOX-2967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Hewson resolved PDFBOX-2967.
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Resolution: Unresolved
Thanks, I've opened PDFBOX-3001 to just re-write the caching code.
> OS font files with paths larger than 80 chars crash FileSystemFontProvider
> --------------------------------------------------------------------------
>
> Key: PDFBOX-2967
> URL: https://issues.apache.org/jira/browse/PDFBOX-2967
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.0
> Environment: Ubuntu Linux 12.04 amd64
> Apache PDFBOX 2.0.0-20150803.050251-1602
> java version "1.8.0_45"
> Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
> Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
> Reporter: Miguel García
>
> The {{org.apache.pdfbox.pdmodel.font.FileSystemFontProvider::saveCache()}}
> method saves its cache in an instance of
> {{Preferences.userNodeForPackage(FileSystemFontProvider.class)}}.
> This {{java.util.prefs.Preferences}} class has a {{MAX_KEY_LENGTH = 80;}}
> limit. The {{Preferences}} implementation we get for the
> {{userNodeForPackage(...)}} method turns out to be an instance of
> {{java.util.prefs.AbstractPreferences}}, which does respect this key length
> limit and throws an IllegalArgumentException otherwise.
> In my Linux environment I have some fonts under {{/usr/share/fonts}} with
> file names longer than 80 characters. For example, those belonging to the
> {{fonts-johnsmith-induni}} debian package.
> Just by having these fonts installed, this problem happens and, for example,
> things like lazyly, statically initialising the
> {{org.apache.pdfbox.pdmodel.font.FontMapper.DefaultFontProvider.INSTANCE}}
> fails leading to class loading problems.
> May I (humbly!) suggest some solutions for the
> {{org.apache.pdfbox.pdmodel.font.FileSystemFontProvider::saveCache()}} method.
> - Not using {{Preferences}} for storing the cache.
> - Avoiding to {{putByteArray(key, ...)}} into preferences anything with a key
> longer than 80 chars (and outputting a warn log).
> - Surrounding the {{putByteArray(key, ...)}} with a try-catch block for
> IllegalArgument exception.
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