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https://issues.apache.org/jira/browse/TIKA-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17283163#comment-17283163
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Peter Kronenberg edited comment on TIKA-3298 at 2/11/21, 4:48 PM:
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So will it be possible to externalize this? A class I can call to load and
return the languages? Maybe a public getLanguages() and calls preloadLangs and
returns the langs collection?
(by the way, maybe langs can be a List instead of a Set. Tesseract already
returns the languages in alphabetical order. Would be nice to keep it that way)
was (Author: peterkronenberg):
So will it be possible to externalize this? A class I can call to load and
return the languages? Maybe a public getLanguages() and calls preloadLangs and
returns the langs collection?
> Add a "preloadLangs" parameter to TesseractOCRParser
> ----------------------------------------------------
>
> Key: TIKA-3298
> URL: https://issues.apache.org/jira/browse/TIKA-3298
> Project: Tika
> Issue Type: Task
> Reporter: Tim Allison
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: image-2021-02-10-18-59-47-793.png,
> image-2021-02-10-19-00-10-691.png, image-2021-02-11-08-56-38-712.png
>
>
> [~peterkronenberg] on the user/dev lists and on TIKA-3297 and TIKA-3296 has
> observed that the tesseract error message for "lang data doesn't exist" is
> not extremely clear. We could add a "preloadLangs" option to
> TesseractOCRParser (default would be {{false}}). If set to true, the parser
> (upon initialization) if it finds tesseract, will call {{tesseract
> --list-langs}} and then store those langs. At parse time, if the langs set
> has anything in it, the TesseractOCRParser will check that set against the
> user-requested language and throw a clearer exception to the user that the
> language data doesn't exist for the requested language.
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