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Basic: handle root checking on Windows more properly #51

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Basic: handle root checking on Windows more properly #51

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12 changes: 12 additions & 0 deletions Sources/TSCBasic/Path.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -164,9 +164,21 @@ public struct AbsolutePath: Hashable {
return isRoot ? self : AbsolutePath(_impl.dirname)
}

#if os(Windows)
internal var isDriveName: Bool {
return _impl.string.count == 2 &&
_impl.string.first!.isLetter && _impl.string.last! == ":"
}
#endif

/// True if the path is the root directory.
public var isRoot: Bool {
#if os(Windows)
return isDriveName ||
_impl.string.withCString(encodedAs: UTF16.self, PathCchIsRoot)
#else
return _impl.string.spm_only == "/"
#endif
}

/// Returns the absolute path with the relative path applied.
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