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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 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 the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Foundation
import struct TSCBasic.AbsolutePath
import protocol TSCBasic.FileSystem
import var TSCBasic.localFileSystem
#if os(macOS)
import struct TSCBasic.RelativePath
import struct TSCBasic.FileSystemError
#endif
/// A helper type for decoding the Info.plist or ToolchainInfo.plist file from an .xctoolchain.
public struct XCToolchainPlist {
/// The toolchain identifier e.g. "com.apple.dt.toolchain.XcodeDefault".
public var identifier: String
/// The toolchain's human-readable name.
public var displayName: String?
public init(identifier: String, displayName: String? = nil) {
self.identifier = identifier
self.displayName = displayName
}
}
extension XCToolchainPlist {
enum Error: Swift.Error {
case unsupportedPlatform
}
/// Returns the plist contents from the xctoolchain in the given directory, either Info.plist or
/// ToolchainInfo.plist.
///
/// - parameter path: The directory to search.
/// - throws: If there is not plist file or it cannot be read.
init(fromDirectory path: AbsolutePath, _ fileSystem: FileSystem = localFileSystem) throws {
#if os(macOS)
let plistNames = [
try RelativePath(validating: "ToolchainInfo.plist"), // Xcode
try RelativePath(validating: "Info.plist"), // Swift.org
]
var missingPlistPath: AbsolutePath?
for plistPath in plistNames.lazy.map({ path.appending($0) }) {
if fileSystem.isFile(plistPath) {
try self.init(path: plistPath, fileSystem)
return
}
missingPlistPath = plistPath
}
throw FileSystemError(.noEntry, missingPlistPath)
#else
throw Error.unsupportedPlatform
#endif
}
/// Returns the plist contents from the xctoolchain at `path`.
///
/// - parameter path: The directory to search.
init(path: AbsolutePath, _ fileSystem: FileSystem = localFileSystem) throws {
#if os(macOS)
let bytes = try fileSystem.readFileContents(path)
self = try bytes.withUnsafeData { data in
let decoder = PropertyListDecoder()
var format = PropertyListSerialization.PropertyListFormat.binary
return try decoder.decode(XCToolchainPlist.self, from: data, format: &format)
}
#else
throw Error.unsupportedPlatform
#endif
}
}
extension XCToolchainPlist: Codable {
private enum CodingKeys: String, CodingKey {
case Identifier
case CFBundleIdentifier
case DisplayName
}
public init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
if let identifier = try container.decodeIfPresent(String.self, forKey: .Identifier) {
self.identifier = identifier
} else {
self.identifier = try container.decode(String.self, forKey: .CFBundleIdentifier)
}
self.displayName = try container.decodeIfPresent(String.self, forKey: .DisplayName)
}
/// Encode the info plist.
///
/// For testing purposes only.
public func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
if identifier.starts(with: "com.apple") {
try container.encode(identifier, forKey: .Identifier)
} else {
try container.encode(identifier, forKey: .CFBundleIdentifier)
}
try container.encodeIfPresent(displayName, forKey: .DisplayName)
}
}
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