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https://issues.apache.org/jira/browse/PDFBOX-4189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16453551#comment-16453551
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Maruan Sahyoun edited comment on PDFBOX-4189 at 4/26/18 6:10 AM:
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I haven't had the time to look at the details but am following the discussion.
What about
- detecting the Script -> {{Character.UnicodeScript}} in {{java.lang}}
- provide a language setting on top to override/specify further as a script
might cover several languages which may have different needs
- putting the GSUB processing behind a flag/configuration similar to Apache Fop
(https://xmlgraphics.apache.org/fop/trunk/complexscripts.html#Disabling-complex-scripts)
so users can decide if they want this for performance and compatibility
reasons. Maybe similar to what was done in {{PDFMergerUtility}}
was (Author: msahyoun):
I haven't had the time to look at the details but am following the discussion.
What about
- detecting the Script -> {{Character.UnicodeScript}} in {{java.lang}}
- provide a language setting on top to override/specify further as a script
might cover several languages which may have different needs
- putting the GSUB processing behind a flag/configuration similar to Apache Fop
so users can decide if they want this for performance and compatibility
reasons. Maybe similar to what was done in {{PDFMergerUtility}}
> Enable PDF creation with Indian languages, by reading and utilizing the GSUB
> table
> ----------------------------------------------------------------------------------
>
> Key: PDFBOX-4189
> URL: https://issues.apache.org/jira/browse/PDFBOX-4189
> Project: PDFBox
> Issue Type: New Feature
> Components: FontBox, PDModel
> Reporter: Palash Ray
> Priority: Major
> Attachments: Bengali-text-after.pdf, Bengali-text-before.pdf,
> BengaliPdfGenerationHelloWorld.java, bengali-example.pdf,
> bengali-example2.pdf, committed.patch, screenshot.png
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> Implemented proper rendering of Indian languages, which need extensive Glyph
> substitution. The GSUB table has been read and used effectively to replace
> some compound words with their respective Glyphs. All tests are passing. I
> have tested this for the Bengali font. Please review these changes and let me
> know if it makes sense to incorporate these.
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