Added *File* class for files manipulation.

Sources/File.swift

@@ -0,0 +1,110 @@
+//
+//  File.swift
+//  Swifter
+//
+//  Copyright (c) 2014-2016 Damian Kołakowski. All rights reserved.
+//
+
+#if os(Linux)
+    import Glibc
+#else
+    import Foundation
+#endif
+
+public enum FileError: ErrorType {
+    case OpenFailed(String)
+    case WriteFailed(String)
+    case ReadFailed(String)
+}
+
+public class File {
+    
+    public static func openNewForWriting(path: String) throws -> File {
+        return try openFileForMode(path, "wb")
+    }
+    
+    public static func openForReading(path: String) throws -> File {
+        return try openFileForMode(path, "rb")
+    }
+    
+    public static func openForWritingAndReading(path: String) throws -> File {
+        return try openFileForMode(path, "r+b")
+    }
+    
+    public static func openFileForMode(path: String, _ mode: String) throws -> File {
+        let file = fopen(path.withCString({ $0 }), mode.withCString({ $0 }))
+        guard file != nil else {
+            throw FileError.OpenFailed(descriptionOfLastError())
+        }
+        return File(file)
+    }
+    
+    private let pointer: UnsafeMutablePointer<FILE>
+    
+    public init(_ pointer: UnsafeMutablePointer<FILE>) {
+        self.pointer = pointer
+    }
+    
+    public func close() -> Void {
+        fclose(pointer)
+    }
+    
+    public func read(inout data: [UInt8]) throws -> Int {
+        if data.count <= 0 {
+            return data.count
+        }
+        let count = fread(&data, 1, data.count, self.pointer)
+        if count == data.count {
+            return count
+        }
+        if feof(self.pointer) != 0 {
+            return count
+        }
+        if ferror(self.pointer) != 0 {
+            throw FileError.ReadFailed(File.descriptionOfLastError())
+        }
+        throw FileError.ReadFailed("Unknown file read error occured.")
+    }
+
+    public func write(data: [UInt8]) throws -> Void {
+        if data.count <= 0 {
+            return
+        }
+        try data.withUnsafeBufferPointer {
+            if fwrite($0.baseAddress, 1, data.count, self.pointer) != data.count {
+                throw FileError.WriteFailed(File.descriptionOfLastError())
+            }
+        }
+    }
+    
+    private static func descriptionOfLastError() -> String {
+        return String.fromCString(UnsafePointer(strerror(errno))) ?? "Error: \(errno)"
+    }
+}
+
+extension File {
+    
+    public static func withNewFileOpenedForWriting<Result>(path: String, _ f: File throws -> Result) throws -> Result {
+        return try withFileOpenedForMode(path, mode: "wb", f)
+    }
+    
+    public static func withFileOpenedForReading<Result>(path: String, _ f: File throws -> Result) throws -> Result {
+        return try withFileOpenedForMode(path, mode: "rb", f)
+    }
+    
+    public static func withFileOpenedForWritingAndReading<Result>(path: String, _ f: File throws -> Result) throws -> Result {
+        return try withFileOpenedForMode(path, mode: "r+b", f)
+    }
+    
+    public static func withFileOpenedForMode<Result>(path: String, mode: String, _ f: File throws -> Result) throws -> Result {
+        let file = try File.openFileForMode(path, mode)
+        do {
+            let result = try f(file)
+            file.close()
+            return result
+        } catch {
+            file.close()
+            throw error
+        }
+    }
+}

Swifter.xcodeproj/project.pbxproj

@@ -55,6 +55,8 @@
 		7CCD877E1C660EA30068099B /* Swifter.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 7AE893FB1C0512C400A29F63 /* Swifter.framework */; };
 		7CCD87841C660ED60068099B /* SwifterTestsHttpParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7CCD876D1C660B250068099B /* SwifterTestsHttpParser.swift */; };
 		7CCD87851C660ED60068099B /* SwifterTestsStringExtensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7CCD876E1C660B250068099B /* SwifterTestsStringExtensions.swift */; };
+		7CCD87871C676EE50068099B /* File.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7CCD87861C676EE50068099B /* File.swift */; };
+		7CCD87881C676EE50068099B /* File.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7CCD87861C676EE50068099B /* File.swift */; };
 		7CDAB8131BE2A1D400C8A977 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 7CDAB80D1BE2A1D400C8A977 /* Main.storyboard */; };
 		7CDAB8141BE2A1D400C8A977 /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 7CDAB80F1BE2A1D400C8A977 /* Images.xcassets */; };
 		7CDAB8161BE2A1D400C8A977 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7CDAB8111BE2A1D400C8A977 /* ViewController.swift */; };
@@ -143,6 +145,7 @@
 		7CCD876E1C660B250068099B /* SwifterTestsStringExtensions.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SwifterTestsStringExtensions.swift; sourceTree = "<group>"; };
 		7CCD87791C660EA30068099B /* SwifterOSXTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = SwifterOSXTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
 		7CCD877D1C660EA30068099B /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		7CCD87861C676EE50068099B /* File.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = File.swift; sourceTree = "<group>"; };
 		7CDAB80C1BE2A1D400C8A977 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
 		7CDAB80E1BE2A1D400C8A977 /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
 		7CDAB80F1BE2A1D400C8A977 /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Images.xcassets; sourceTree = "<group>"; };
@@ -320,6 +323,7 @@
 				7C73C69A1C2619E100AEF6CA /* HttpServer.swift */,
 				7C73C69B1C2619E100AEF6CA /* HttpServerIO.swift */,
 				7C73C69C1C2619E100AEF6CA /* Socket.swift */,
+				7CCD87861C676EE50068099B /* File.swift */,
 				7C73C69D1C2619E100AEF6CA /* String+Misc.swift */,
 				7C2BEC771C518B7C00B8EE90 /* String+SHA1.swift */,
 				7C1A2BFA1C5605F50026D3BF /* String+BASE64.swift */,
@@ -570,6 +574,7 @@
 				7C73C6AF1C261A2100AEF6CA /* HttpRouter.swift in Sources */,
 				7CC0F8CC1C5014A200B65A94 /* HttpHandlers+WebSockets.swift in Sources */,
 				7C73C6B01C261A2100AEF6CA /* HttpServer.swift in Sources */,
+				7CCD87871C676EE50068099B /* File.swift in Sources */,
 				7C73C6B11C261A2100AEF6CA /* HttpServerIO.swift in Sources */,
 				7C73C6B21C261A2100AEF6CA /* Socket.swift in Sources */,
 				7CC0F8C91C50136B00B65A94 /* HttpHandlers+Files.swift in Sources */,
@@ -591,6 +596,7 @@
 				7C73C6BA1C261A2600AEF6CA /* HttpRouter.swift in Sources */,
 				7CC0F8CD1C5014A200B65A94 /* HttpHandlers+WebSockets.swift in Sources */,
 				7C73C6BB1C261A2600AEF6CA /* HttpServer.swift in Sources */,
+				7CCD87881C676EE50068099B /* File.swift in Sources */,
 				7C73C6BC1C261A2600AEF6CA /* HttpServerIO.swift in Sources */,
 				7C73C6BD1C261A2600AEF6CA /* Socket.swift in Sources */,
 				7CC0F8CA1C50136B00B65A94 /* HttpHandlers+Files.swift in Sources */,