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Posted to dev@pdfbox.apache.org by "Philip Helger (JIRA)" <ji...@apache.org> on 2013/08/22 15:47:53 UTC
[jira] [Commented] (PDFBOX-1702) Performance improvement in
PDPageContentStream.drawString
[ https://issues.apache.org/jira/browse/PDFBOX-1702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747533#comment-13747533 ]
Philip Helger commented on PDFBOX-1702:
---------------------------------------
Additionally all the constants can be switched to byte[] to avoid consecutive conversion. Please see the attached file for an example implementation.
> Performance improvement in PDPageContentStream.drawString
> ---------------------------------------------------------
>
> Key: PDFBOX-1702
> URL: https://issues.apache.org/jira/browse/PDFBOX-1702
> Project: PDFBox
> Issue Type: Improvement
> Components: Writing
> Affects Versions: 1.8.2
> Reporter: Philip Helger
> Attachments: PDPageContentStreamFast.java
>
>
> There is a simple way of improving the performance of drawString by replacing
> string.writePDF( buffer );
> appendRawCommands( new String( buffer.toByteArray(), "ISO-8859-1"));
> appendRawCommands( SPACE );
> with
> string.writePDF( buffer );
> appendRawCommands( buffer.toByteArray() );
> appendRawCommands( SPACE );
> as the appendRawCommands(String) simple does a appendRawCommands(str.getBytes( "ISO-8859-1" ));
> Therefore this optimization should spare the String creation as well as the conversion back to a byte array.
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