Merge pull request #6 from compnerd/windows

Initial port to Windows

Author: milseman

Sources/CSystem/include/CSystemWindows.h

@@ -0,0 +1,17 @@
+/*
+ This source file is part of the Swift System open source project
+
+ Copyright (c) 2020 Apple Inc. and the Swift System project authors
+ Licensed under Apache License v2.0 with Runtime Library Exception
+
+ See https://swift.org/LICENSE.txt for license information
+*/
+
+#if defined(_WIN32)
+
+#define NOMINMAX
+#define WIN32_LEAN_AND_MEAN
+#define VC_EXTRA_LEAN
+#include <Windows.h>
+
+#endif

Sources/CSystem/shims.c

@@ -11,4 +11,8 @@
 
 #include <CSystemLinux.h>
 
-#endif
+#endif
+
+#if defined(_WIN32)
+#include <CSystemWindows.h>
+#endif

Sources/System/Errno.swift

@@ -229,6 +229,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @available(*, unavailable, renamed: "badAddress")
   public static var EFAULT: Errno { badAddress }
 
+#if !os(Windows)
   /// Not a block device.
   ///
   /// You attempted a block device operation on a nonblock device or file.
@@ -240,6 +241,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "notBlockDevice")
   public static var ENOTBLK: Errno { notBlockDevice }
+#endif
 
   /// Resource busy.
   ///
@@ -360,6 +362,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @available(*, unavailable, renamed: "tooManyOpenFiles")
   public static var EMFILE: Errno { tooManyOpenFiles }
 
+#if !os(Windows)
   /// Inappropriate control function.
   ///
   /// You attempted a control function
@@ -388,6 +391,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "textFileBusy")
   public static var ETXTBSY: Errno { textFileBusy }
+#endif
 
   /// The file is too large.
   ///
@@ -630,6 +634,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @available(*, unavailable, renamed: "socketTypeNotSupported")
   public static var ESOCKTNOSUPPORT: Errno { socketTypeNotSupported }
 
+#if !os(Windows)
   /// Not supported.
   ///
   /// The attempted operation isn't supported
@@ -642,6 +647,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "notSupported")
   public static var ENOTSUP: Errno { notSupported }
+#endif
 
   /// Protocol family not supported.
   ///
@@ -1123,6 +1129,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   public static var EDEVERR: Errno { deviceError }
 #endif
 
+#if !os(Windows)
   /// Value too large to be stored in data type.
   ///
   /// A numerical result of the function
@@ -1135,6 +1142,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "overflow")
   public static var EOVERFLOW: Errno { overflow }
+#endif
 
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
   /// Bad executable or shared library.
@@ -1199,6 +1207,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @available(*, unavailable, renamed: "canceled")
   public static var ECANCELED: Errno { canceled }
 
+#if !os(Windows)
   /// Identifier removed.
   ///
   /// An IPC identifier was removed while the current process was waiting on it.
@@ -1223,6 +1232,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "noMessage")
   public static var ENOMSG: Errno { noMessage }
+#endif
 
   /// Illegal byte sequence.
   ///
@@ -1252,6 +1262,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   public static var ENOATTR: Errno { attributeNotFound }
 #endif
 
+#if !os(Windows)
   /// Bad message.
   ///
   /// The message to be received is inappropriate
@@ -1350,6 +1361,7 @@ public struct Errno: RawRepresentable, Error, Hashable, Codable {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "timeout")
   public static var ETIME: Errno { timeout }
+#endif
 
   /// Operation not supported on socket.
   ///
@@ -1411,6 +1423,7 @@ extension Errno {
   public static var ENOPOLICY: Errno { noSuchPolicy }
 #endif
 
+#if !os(Windows)
   /// State not recoverable.
   ///
   /// The corresponding C error is `ENOTRECOVERABLE`.
@@ -1430,6 +1443,7 @@ extension Errno {
   @_alwaysEmitIntoClient
   @available(*, unavailable, renamed: "previousOwnerDied")
   public static var EOWNERDEAD: Errno { previousOwnerDied }
+#endif
 
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
   /// Interface output queue is full.

Sources/System/FileDescriptor.swift

@@ -83,6 +83,7 @@ extension FileDescriptor {
     @_alwaysEmitIntoClient
     private init(_ raw: CInt) { self.init(rawValue: raw) }
 
+#if !os(Windows)
     /// Indicates that opening the file doesn't
     /// wait for the file or device to become available.
     ///
@@ -103,6 +104,7 @@ extension FileDescriptor {
     @_alwaysEmitIntoClient
     @available(*, unavailable, renamed: "nonBlocking")
     public static var O_NONBLOCK: OpenOptions { nonBlocking }
+#endif
 
     /// Indicates that each write operation appends to the file.
     ///
@@ -201,6 +203,7 @@ extension FileDescriptor {
     public static var O_EXLOCK: OpenOptions { exclusiveLock }
 #endif
 
+#if !os(Windows)
     /// Indicates that opening the file doesn't follow symlinks.
     ///
     /// If you specify this option
@@ -216,6 +219,7 @@ extension FileDescriptor {
     @_alwaysEmitIntoClient
     @available(*, unavailable, renamed: "noFollow")
     public static var O_NOFOLLOW: OpenOptions { noFollow }
+#endif
 
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
     /// Indicates that opening the file
@@ -252,6 +256,7 @@ extension FileDescriptor {
     public static var O_EVTONLY: OpenOptions { eventOnly }
 #endif
 
+#if !os(Windows)
     /// Indicates that executing a program closes the file.
     ///
     /// Normally, file descriptors remain open
@@ -271,6 +276,7 @@ extension FileDescriptor {
     @_alwaysEmitIntoClient
     @available(*, unavailable, renamed: "closeOnExec")
     public static var O_CLOEXEC: OpenOptions { closeOnExec }
+#endif
   }
 
   /// Options for specifying what a file descriptor's offset is relative to.
@@ -413,6 +419,13 @@ extension FileDescriptor.OpenOptions
       (.eventOnly, ".eventOnly"),
       (.closeOnExec, ".closeOnExec")
     ]
+#elseif os(Windows)
+    let descriptions: [(Element, StaticString)] = [
+      (.append, ".append"),
+      (.create, ".create"),
+      (.truncate, ".truncate"),
+      (.exclusiveCreate, ".exclusiveCreate"),
+    ]
 #else
     let descriptions: [(Element, StaticString)] = [
       (.nonBlocking, ".nonBlocking"),

Sources/System/Platform.swift

@@ -15,6 +15,8 @@
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS)
 // @available(macOS 10.16, iOS 14.0, watchOS 7.0, tvOS 14.0, *)
 public typealias CModeT =  UInt16
+#elseif os(Windows)
+public typealias CModeT =  Int32
 #else
 public typealias CModeT =  UInt32
 #endif