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@jrflat jrflat commented Oct 3, 2024

Paths beginning with ~ should not be treated as absolute for URL(filePath:). This is because when constructing a URLComponents for a file path we consider absolute, we do:

components.file = "file"
components.host = ""
components.path = path

This would create the string like file://~/. However, URLComponents rejects this string because the ~ is ambiguous--it looks like a host. This can lead components.url! to crash when force-unwrapping.

This PR changes the isAbsolute check to only consider / paths absolute. If the path starts with ~, we will try to expand the tilde, then ensure that the result is absolute.

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jrflat commented Oct 3, 2024

@swift-ci please test

if filePath.utf8.first == ._slash {
return true
}
#if os(Windows)
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Refactored the Windows part and moved up the .first == ._slash check, which is valid for Windows and non-Windows platforms.

@jrflat jrflat requested review from jmschonfeld and parkera October 3, 2024 00:36
@jrflat jrflat merged commit d44a56f into swiftlang:main Oct 3, 2024
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jrflat added a commit to jrflat/swift-foundation that referenced this pull request Oct 8, 2024
@jrflat jrflat mentioned this pull request Oct 8, 2024
jrflat added a commit to jrflat/swift-foundation that referenced this pull request Oct 14, 2024
jrflat added a commit that referenced this pull request Oct 14, 2024
* (133878310) URL.fileSystemPath should drop all trailing slashes (#852)

* (133882014) URL(filePath: path, directoryHint: .notDirectory) should strip trailing slashes (#867)

* (137129292) URL(filePath:) should not treat "~" as absolute (#961)

* (137068266) URL.fileSystemPath should strip leading slash for Windows drive letters (#964)

* (137287143) URL path extension APIs should strip trailing slashes (#965)
jrflat added a commit that referenced this pull request Oct 14, 2024
* (133878310) URL.fileSystemPath should drop all trailing slashes (#852)

* (133882014) URL(filePath: path, directoryHint: .notDirectory) should strip trailing slashes (#867)

* (137129292) URL(filePath:) should not treat "~" as absolute (#961)

* (137068266) URL.fileSystemPath should strip leading slash for Windows drive letters (#964)

* (137287143) URL path extension APIs should strip trailing slashes (#965)
cthielen pushed a commit to cthielen/swift-foundation that referenced this pull request Nov 8, 2024
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2 participants