[jira] Commented: (PDFBOX-581) Avoid warnings for graphics operations when extracting text

["Andreas Lehmkühler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12788088#action_12788088 ] 

Andreas Lehmkühler commented on PDFBOX-581:
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IMHO the Ignore-operator is a good idea. As the TextStripper has its own property file to define the operator mapping, we should use the ignore-operator in that case and leave the PageDrawer property file alone. I think it's quite useful to know which unsupported operators are used during rendering a pdf. So that it's easy to decide if something is missing because of an issue or because of beeing not supported.

> Avoid warnings for graphics operations when extracting text
> -----------------------------------------------------------
>
>                 Key: PDFBOX-581
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-581
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Text extraction
>            Reporter: Jukka Zitting
>            Assignee: Jukka Zitting
>            Priority: Minor
>
> PDFStreamEngine logs warnings of all encountered PDF operators for which an OperatorProcessor has not explicitly been configured. This is a bit annoying for things like text extraction where many graphics operators can simply be ignored.
> To solve this we can either disable the warnings entirely or add an explicit "Ignore" operator processor that simply ignores the selected operators. I'm inclined to implement the latter solution as I think it's a good idea to log warnings for truly unexpected operators.

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