[issue44128] zipfile: Deduplicate ZipExtFile code for init and resetting when seeking

[Daniel Hillier]

New submission from Daniel Hillier <daniel.hillier at gmail.com>:

Integrating a refactor suggested in https://bugs.python.org/issue38334

The logic for preparing a ZipExtFile for reading (setting CRC state, read positions, etc) is currently in two locations: first initialisation and when seeking back to the start of a file.

This change moves the logic into the method `ZipExtFile.init_read()`

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components: Library (Lib)
messages: 393619
nosy: dhillier, serhiy.storchaka
priority: normal
severity: normal
status: open
title: zipfile: Deduplicate ZipExtFile code for init and resetting when seeking
type: enhancement
versions: Python 3.10, Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44128>
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