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GH-85168: Use filesystem encoding when converting to/from file URIs #126852

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merged 5 commits into from
Nov 19, 2024

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barneygale
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@barneygale barneygale commented Nov 15, 2024

Adjust urllib.request.url2pathname() and pathname2url() to use the filesystem encoding when quoting and unquoting file URIs, rather than forcing use of UTF-8.

No changes are needed in the nturl2path module because Windows always uses UTF-8, per PEP 529.

…` URIs

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
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barneygale commented Nov 15, 2024

The freedesktop file URI spec is a useful reference here:

There is no specified encoding for filenames, and although we hope
that eventually all filenames will be encoded in UTF8 we can't rely on
this, because then we would be unable to e.g. rename a file with a
misencoded filename.

Also:

Some current apps generate file URIs by converting the filename from
whatever locale the application runs in to UTF8. This behavior means
that URIs can't be converted to filenames without knowing the
locale of the application that produced them, and that not all valid
filenames can be converted to URIs. Such behavior is not allowed,
and should be changed.

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@serhiy-storchaka serhiy-storchaka left a comment

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LGTM in general. But we should support URIs containing not quoted non-ASCII characters.

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Thanks for the review - I've made the changes you suggested

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LGTM.

You can also use fsdecode(TESTFN_UNDECODABLE) and TESTFN_UNENCODABLE in some tests if you wish.

@barneygale barneygale merged commit c9b399f into python:main Nov 19, 2024
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Thanks @barneygale for the PR 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 19, 2024
…` URIs (pythonGH-126852)

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
(cherry picked from commit c9b399f)

Co-authored-by: Barney Gale <[email protected]>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 19, 2024
…` URIs (pythonGH-126852)

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
(cherry picked from commit c9b399f)

Co-authored-by: Barney Gale <[email protected]>
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bedevere-app bot commented Nov 19, 2024

GH-127039 is a backport of this pull request to the 3.13 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.13 bugs and security fixes label Nov 19, 2024
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bedevere-app bot commented Nov 19, 2024

GH-127040 is a backport of this pull request to the 3.12 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.12 only security fixes label Nov 19, 2024
barneygale added a commit that referenced this pull request Nov 19, 2024
…e` URIs (GH-126852) (#127040)

GH-85168: Use filesystem encoding when converting to/from `file` URIs (GH-126852)

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
(cherry picked from commit c9b399f)

Co-authored-by: Barney Gale <[email protected]>
barneygale added a commit that referenced this pull request Nov 20, 2024
…e` URIs (GH-126852) (#127039)

GH-85168: Use filesystem encoding when converting to/from `file` URIs (GH-126852)

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
(cherry picked from commit c9b399f)

Co-authored-by: Barney Gale <[email protected]>
ebonnal pushed a commit to ebonnal/cpython that referenced this pull request Jan 12, 2025
…` URIs (python#126852)

Adjust `urllib.request.url2pathname()` and `pathname2url()` to use the
filesystem encoding when quoting and unquoting file URIs, rather than
forcing use of UTF-8.

No changes are needed in the `nturl2path` module because Windows always
uses UTF-8, per PEP 529.
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3 participants