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/*
This source file is part of the Swift.org open source project
Copyright (c) 2021 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See https://swift.org/LICENSE.txt for license information
See https://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import Foundation
import ArgumentParser
/// A parsable argument for an optional directory path.
///
/// This option validates the provided path exists and that it's a directory.
public protocol DirectoryPathOption: ParsableArguments {
/// The path to a directory.
var url: URL? { get }
}
extension DirectoryPathOption {
/// The provided ``url`` or the "current directory" if the user didn't provide an argument.
public var urlOrFallback: URL {
return url ?? URL(fileURLWithPath: ".", isDirectory: true)
}
public mutating func validate() throws {
guard let url else {
return
}
// Validate that the URL represents a directory
guard url.hasDirectoryPath == true else {
throw ValidationError("No documentation directory exists at '\(url.path)'.")
}
}
}
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