py-pdf/pypdf

can not decode afii characters (ISO 10036)

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#1,381 opened on Oct 5, 2022

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help wantedworkflow-arabic-text-extraction

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Description

extracted from #1379 PS : in the extraction result, the arabic characters are replaced with /afiinnnn. this is because the data uses the iso 10036 standard that I've not been able to find any free information on how to do transcoding file 02voc.pdf test code:

import PyPDF2;
PyPDF2.PdfReader("e:/02voc.pdf").pages[2].extract_text()

Originally posted by @pubpub-zz in https://github.com/py-pdf/PyPDF2/issues/1379#issuecomment-1268897035

Contributor guide

Research direction
Investigate ISO 10036 encoding and map afii character codes to Unicode. Refer to PDF specification for character encoding.
Tech stack
python
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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Half day
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Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
PythonPDF
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40