[New-bugs-announce] [issue41142] msilib.CAB doesnot support non-ASCII files

[Serhiy Storchaka]

New submission from Serhiy Storchaka <storchaka+cpython at gmail.com>:

There are several problems with _msi.FCICreate() used to create the CAB file. It encodes the CAB names and added file names to UTF-8 and then use them as encoded with the local encoding. So you cannot create a CAB file in a directory with non-ASCII name or add files from a directory with non-ASCII name. This is a Python 3 regression.

Two possible solutions:

1. Encode paths with the locale encoding. It will add support for paths encodable with the locale encoding.

2. Encode them to UTF-8, but use a wrapper for opening file which converts the path from UTF-8 to UTF-16 and uses the Unicode variant of _open(). It will support arbitrary names.

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components: Windows
messages: 372466
nosy: paul.moore, serhiy.storchaka, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: msilib.CAB doesnot support non-ASCII files
type: enhancement
versions: Python 3.10

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41142>
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