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/*
This source file is part of the Swift.org open source project
Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
// deprecated 9/2021
@available(*, deprecated, message: "use Foundation APIs instead")
public struct URL {
/// Parses the URL type of a git repository
/// e.g. https://github.com/apple/swift returns "https"
/// e.g. git@github.com:apple/swift returns "git"
///
/// This is *not* a generic URI scheme parser!
public static func scheme(_ url: String) -> String? {
func prefixOfSplitBy(_ delimiter: String) -> String? {
let (head, tail) = url.spm_split(around: delimiter)
if tail == nil {
//not found
return nil
} else {
//found, return head
//lowercase the "scheme", as specified by the URI RFC (just in case)
return head.lowercased()
}
}
for delim in ["://", "@"] {
if let found = prefixOfSplitBy(delim), !found.contains("/") {
return found
}
}
return nil
}
}
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