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ContextModel.swift
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ContextModel.swift
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/*
This source file is part of the Swift.org open source project
Copyright (c) 2014 - 2021 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
*/
import class Foundation.JSONDecoder
import class Foundation.JSONEncoder
import class Foundation.ProcessInfo
public struct ContextModel {
public let packageDirectory : String
public init(packageDirectory : String) {
self.packageDirectory = packageDirectory
}
public var environment : [String : String] {
ProcessInfo.processInfo.environment
}
}
extension ContextModel : Codable {
private enum CodingKeys: CodingKey {
case packageDirectory
}
public init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
self.packageDirectory = try container.decode(String.self, forKey: .packageDirectory)
}
public func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
try container.encode(packageDirectory, forKey: .packageDirectory)
}
public var encoded : String {
let encoder = JSONEncoder()
let data = try! encoder.encode(self)
return String(data: data, encoding: .utf8)!
}
public static func decode() -> ContextModel {
// TODO: Look at ProcessInfo.processInfo
var args = Array(ProcessInfo.processInfo.arguments[1...]).makeIterator()
while let arg = args.next() {
if arg == "-context", let json = args.next() {
let decoder = JSONDecoder()
let data = json.data(using: .utf8)!
return (try! decoder.decode(ContextModel.self, from: data))
}
}
fatalError("Could not decode ContextModel parameter.")
}
}