TOMER MAHLIN created PDFBOX-3096:
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Summary: Lack of Bidi (Arabic / Hebrew) test reordering in text
extracted with PDFbox
Key: PDFBOX-3096
URL: https://issues.apache.org/jira/browse/PDFBOX-3096
Project: PDFBox
Issue Type: Bug
Components: Text extraction
Reporter: TOMER MAHLIN
Rendering rules for Bidi (Arabic / Hebrew) text in regular Windows / Android /
iOS environment and Adobe environment are different. Adobe expect text to
appear in visual bidi layout while modern system are working with logical bidi
layout.
When text is extracted from PDF file it should be converted / normalized to
logical bidi layout.
Example:
Assuming capital letters stand for Bidi letters.
1. In Adobe document you see: CBA
2. When you extract the content and display it in Notepad (or web browser or
any similar tool) you will see ABC while the expectation is to see CBA.
Assuming you have a real text with both Hebrew and English (or Arabic and
English) characters the result display is completely ruined after text
extraction. Moreover, even if we ignore the display and focus on text
manipulation (search, comparison, concatenation etc.), it will fail if the same
text authored in Notepad and extracted from PDF file are compared.
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