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Posted to dev@pdfbox.apache.org by "Tilman Hausherr (Jira)" <ji...@apache.org> on 2022/05/05 16:23:00 UTC
[jira] [Comment Edited] (PDFBOX-5143) Refactor/Simplify CFF parsing
[ https://issues.apache.org/jira/browse/PDFBOX-5143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17532396#comment-17532396 ]
Tilman Hausherr edited comment on PDFBOX-5143 at 5/5/22 4:22 PM:
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{noformat}
java.util.ConcurrentModificationException
at java.util.ArrayList.forEach(ArrayList.java:1262)
at org.apache.fontbox.cff.Type1CharString.handleSequence(Type1CharString.java:168)
at org.apache.fontbox.cff.Type1CharString.render(Type1CharString.java:157)
at org.apache.fontbox.cff.Type1CharString.getPath(Type1CharString.java:134)
at org.apache.fontbox.cff.CFFType1Font.getPath(CFFType1Font.java:65)
at org.apache.pdfbox.pdmodel.font.PDType1CFont.getPath(PDType1CFont.java:178)
{noformat}
this happens if the {{type1Sequence}} list is modified within {{foreach}}. Which can happen in {{Type2CharString.addCommand()}}. But I wonder why this never made problems in the deleted {{CharStringHandler.handleSequence()}} ?!
was (Author: tilman):
{noformat}
java.util.ConcurrentModificationException
at java.util.ArrayList.forEach(ArrayList.java:1262)
at org.apache.fontbox.cff.Type1CharString.handleSequence(Type1CharString.java:168)
at org.apache.fontbox.cff.Type1CharString.render(Type1CharString.java:157)
at org.apache.fontbox.cff.Type1CharString.getPath(Type1CharString.java:134)
at org.apache.fontbox.cff.CFFType1Font.getPath(CFFType1Font.java:65)
at org.apache.pdfbox.pdmodel.font.PDType1CFont.getPath(PDType1CFont.java:178)
{noformat}
this happens if the {{type1Sequence}} list is modified within {{foreach}}. Which can happen in Type2CharString.addCommand(). But I wonder why this never made problems in the deleted {{CharStringHandler.handleSequence()}} ?!
> Refactor/Simplify CFF parsing
> -----------------------------
>
> Key: PDFBOX-5143
> URL: https://issues.apache.org/jira/browse/PDFBOX-5143
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 3.0.0 PDFBox
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Major
> Fix For: 3.0.0 PDFBox
>
> Attachments: evince-bug431088.pdf
>
>
> The classes used for the parsing of CFF-based fonts have some room for improvements w.r.t. the memory footprint, the complexity of the code and the test coverage.
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