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Posted to dev@pdfbox.apache.org by "Andreas Lehmkühler (JIRA)" <ji...@apache.org> on 2018/03/04 12:42:00 UTC
[jira] [Resolved] (PDFBOX-4139) Optimize memory footprint of CID
mappings within CMaps
[ https://issues.apache.org/jira/browse/PDFBOX-4139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andreas Lehmkühler resolved PDFBOX-4139.
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Resolution: Fixed
I've replaced single value cidranges with a simple mapping and consecutive cidranges are merged automatically. This reduces the number of CIDRange instances which improves the memory footprint and speeds up the code/CID lookup.
> Optimize memory footprint of CID mappings within CMaps
> ------------------------------------------------------
>
> Key: PDFBOX-4139
> URL: https://issues.apache.org/jira/browse/PDFBOX-4139
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.8
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Priority: Minor
> Fix For: 2.0.9, 3.0.0 PDFBox
>
>
> Some of the predefined CMaps define CID-ranges which simply map single values. Other are consecutive ranges which could be merge into one range, e.g.
> - UniGB-UCS2-H contains a lot of ranges representing single value mappings
> - Identity-H contains 256 ranges which can be merge into a single range
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