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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2023 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 the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import Basics
import Foundation
import class Basics.AsyncProcess
private func isAndroid() -> Bool {
(try? localFileSystem.isFile(AbsolutePath(validating: "/system/bin/toolchain"))) ?? false ||
(try? localFileSystem.isFile(AbsolutePath(validating: "/system/bin/toybox"))) ?? false
}
public enum Platform: Equatable, Sendable {
case android
case darwin
case linux(LinuxFlavor)
case windows
/// Recognized flavors of linux.
public enum LinuxFlavor: Equatable, Sendable {
case debian
case fedora
}
}
extension Platform {
public static let current: Platform? = {
#if os(Windows)
return .windows
#else
switch try? AsyncProcess.checkNonZeroExit(args: "uname")
.trimmingCharacters(in: .whitespacesAndNewlines)
.lowercased()
{
case "darwin"?:
return .darwin
case "linux"?:
return Platform.findCurrentPlatformLinux(localFileSystem)
default:
return nil
}
#endif
}()
private static func findCurrentPlatformLinux(_ fileSystem: FileSystem) -> Platform? {
do {
if try fileSystem.isFile(AbsolutePath(validating: "/etc/debian_version")) {
return .linux(.debian)
}
if try fileSystem.isFile(AbsolutePath(validating: "/system/bin/toolbox")) ||
fileSystem.isFile(AbsolutePath(validating: "/system/bin/toybox"))
{
return .android
}
if try fileSystem.isFile(AbsolutePath(validating: "/etc/redhat-release")) ||
fileSystem.isFile(AbsolutePath(validating: "/etc/centos-release")) ||
fileSystem.isFile(AbsolutePath(validating: "/etc/fedora-release")) ||
Platform.isAmazonLinux2(fileSystem)
{
return .linux(.fedora)
}
} catch {}
return nil
}
private static func isAmazonLinux2(_ fileSystem: FileSystem) -> Bool {
do {
let release = try fileSystem.readFileContents(AbsolutePath(validating: "/etc/system-release")).cString
return release.hasPrefix("Amazon Linux release 2")
} catch {
return false
}
}
}
extension Platform {
/// The file extension used for a dynamic library on this platform.
public var dynamicLibraryExtension: String {
switch self {
case .darwin: return ".dylib"
case .linux, .android: return ".so"
case .windows: return ".dll"
}
}
public var executableExtension: String {
switch self {
case .windows: return ".exe"
case .linux, .android, .darwin: return ""
}
}
}
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