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Posted to dev@pdfbox.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2020/07/13 17:18:00 UTC
[jira] [Commented] (PDFBOX-4895) Faster COSNumber
[ https://issues.apache.org/jira/browse/PDFBOX-4895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156847#comment-17156847 ]
ASF subversion and git services commented on PDFBOX-4895:
---------------------------------------------------------
Commit 1879833 from Tilman Hausherr in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1879833 ]
PDFBOX-4895: avoid calling indexOf() twice + no need to parse huge longs, by Alfred Faltiska
> Faster COSNumber
> ----------------
>
> Key: PDFBOX-4895
> URL: https://issues.apache.org/jira/browse/PDFBOX-4895
> Project: PDFBox
> Issue Type: Improvement
> Affects Versions: 2.0.20, 3.0.0 PDFBox
> Reporter: Alfred
> Priority: Trivial
> Labels: Optimization
> Attachments: PDFBOX-4895-b.patch, PDFBOX-4895.patch
>
>
> A small improvement can be made to COSNumber when checking if it's float.
> Current version uses indexOf twice, to check for '.' or 'e'.
> We can do that in one scan.
>
> Each call will scan through the entire string.
> We only have to scan until we find the chars, and stop if found.
>
> I found while profiling the code that the method gets called a lot, so the improvement makes a a bit of a difference.
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