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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
extension StringProtocol {
/// A copy of the string prefixed with a slash ("/") if the string doesn't already start with a leading slash.
var prependingLeadingSlash: String {
guard !hasPrefix("/") else { return String(self) }
return "/".appending(self)
}
/// A copy of the string appended with a slash ("/") if the string doesn't already end with a trailing slash.
var appendingTrailingSlash: String {
guard !hasSuffix("/") else { return String(self) }
return self.appending("/")
}
/// A copy of the string without a leading slash ("/") or the original string if it doesn't start with a leading slash.
var removingLeadingSlash: String {
guard hasPrefix("/") else { return String(self) }
return String(dropFirst())
}
/// A copy of the string without a trailing slash ("/") or the original string if it doesn't end with a trailing slash.
var removingTrailingSlash: String {
guard hasSuffix("/") else { return String(self) }
return String(dropLast())
}
}
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