Merge pull request #29 from QuentinPerez/linux-fix

Issue #28: Fix build on Linux

Sources/protoc-gen-swift/EnumGenerator.swift

@@ -66,7 +66,7 @@ extension Google_Protobuf_EnumDescriptorProto {
             let fieldPrefix = fieldChars[0..<enumChars.count]
             let fieldPrefixString = String(fieldPrefix)
             if fieldPrefixString != enumName {
-                return o
+                return 0
             }
 #else
             if enumName.commonPrefix(with: fieldName) != enumName {

Sources/protoc-gen-swift/FileIo.swift

@@ -99,7 +99,7 @@ class Stdin {
 
 func writeFileData(filename: String, data: [UInt8]) throws {
 #if os(Linux)
-    _ = try NSData(bytes: data, length: data.count).write(to: NSURL(fileURLWithPath: filename))
+    _ = try NSData(bytes: data, length: data.count).write(to: URL(fileURLWithPath: filename))
 #else
     _ = try Data(bytes: data).write(to: URL(fileURLWithPath: filename))
 #endif
@@ -112,7 +112,7 @@ func readFileData(filename: String) throws -> [UInt8] {
     }
 
     // from NSData to [UInt8]
-    return Array(UnsafeBufferPointer(start: UnsafePointer<UInt8>(data.bytes), count: data.length))
+    return data.bytes.advanced(by: data.length).load(as: [UInt8].self)
 #else
     return try [UInt8](Data(contentsOf:URL(fileURLWithPath: filename)))
 #endif