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03d8ea5248
This is a tool specifically designed to generate Xcode projects for the Swift repo (as well as a couple of adjacent repos such as LLVM and Clang). It aims to provide a much more user-friendly experience than the CMake Xcode generation (`build-script --xcode`).
39 lines
1.3 KiB
Swift
39 lines
1.3 KiB
Swift
//===--- DirectoryCache.swift ---------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2024 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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import Foundation
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/// A simple cache for the recursive contents of a directory under a given
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/// root path. This is pretty basic and doesn't handle cases where we've already
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/// cached the parent.
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struct DirectoryCache {
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private let root: AbsolutePath
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private let storage = MutexBox<[RelativePath: [RelativePath]]>()
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init(root: AbsolutePath) {
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self.root = root
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}
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func getAllSubpaths(of path: RelativePath) throws -> [RelativePath] {
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if let result = storage.withLock(\.[path]) {
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return result
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}
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let absPath = root.appending(path).rawPath
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let result = try FileManager.default.subpathsOfDirectory(atPath: absPath)
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.map { path.appending($0) }
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storage.withLock { storage in
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storage[path] = result
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}
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return result
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}
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}
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