[jira] Updated: (PDFBOX-878) Incorrect text extraction when text rotation is not 0,90,180,270

[JIRA]

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https://issues.apache.org/jira/browse/PDFBOX-878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Rodríguez Alfayate updated PDFBOX-878:
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    Attachment: pdfbox-word-rotation.patch

Patch for current codebase, which solves text-rotation described in this bug. 
It modifies 0,0 asumption as upper-left, adds a Word class in order to merge 
several TextPosition in a consistent way, and adds a sample XML extraction

> Incorrect text extraction when text rotation is not 0,90,180,270
> ----------------------------------------------------------------
>
>                 Key: PDFBOX-878
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-878
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Text extraction
>    Affects Versions: 1.3.1, 1.4.0
>            Reporter: David Rodríguez Alfayate
>         Attachments: pdfbox-word-rotation.patch, rotation.pdf, 
> rotation_failure.txt
>
>
> Currently text extraction only supports 0, 90, 180 or 270 degrees rotation, 
> so text rotated in another angle is extracted incorrectly. I attached one 
> simple PDF and the text extraction result as output from ExtractText.
> I have made a patch for the current revision (1.4.0) in which I consider any 
> rotation in the current matrix position. I have had to refactor the 
> considering of (0,0) as upper-left since for rotations places outside of the 
> original asumption, could happen that a word or a line could be splitted. 
> Since we have some needs for a project in we are working, I have made changes 
> to the way normalization and line printing is done, in the current codebase 
> the normalize function is returing a List of Strings, my changes make this 
> method return a List of Words, which are ICU normalized and therefore printed 
> in the current writeLine method. In my patch I have also included a sample 
> PDF2XML class, which converts the PDF to a XML, managing each word in a 
> separate way.
> I submit the test-cases and the patch for your consideration.

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