Keep compatiblity with non-Apple OS

Author: nspassov

FlyingFox/Sources/Handlers/FileHTTPHandler.swift

@@ -31,7 +31,9 @@
 
 import FlyingSocks
 import Foundation
+#if canImport(UniformTypeIdentifiers)
 import UniformTypeIdentifiers
+#endif
 
 public struct FileHTTPHandler: HTTPHandler {
 
@@ -50,6 +52,7 @@ public struct FileHTTPHandler: HTTPHandler {
 
     static func makeContentType(for filename: String) -> String {
         let pathExtension = (filename.lowercased() as NSString).pathExtension
+#if canImport(UniformTypeIdentifiers)
         switch pathExtension {
         case "wasm":
             return "application/wasm"
@@ -58,6 +61,46 @@ public struct FileHTTPHandler: HTTPHandler {
         default:
             return UTType(filenameExtension: pathExtension)?.preferredMIMEType ?? "application/octet-stream"
         }
+#else
+        switch pathExtension {
+        case "json":
+            return "application/json"
+        case "html", "htm":
+            return "text/html"
+        case "css":
+            return "text/css"
+        case "js", "javascript":
+            return "text/javascript"
+        case "png":
+            return "image/png"
+        case "jpeg", "jpg":
+            return "image/jpeg"
+        case "mp4":
+            return "video/mp4"
+        case "m4v":
+            return "video/x-m4v"
+        case "pdf":
+            return "application/pdf"
+        case "svg":
+            return "image/svg+xml"
+        case "txt":
+            return "text/plain"
+        case "ico":
+            return "image/vnd.microsoft.icon"
+        case "wasm":
+            return "application/wasm"
+        case "webp":
+            return "image/webp"
+        case "jp2":
+            return "image/jp2"
+        case "properties":
+            return "text/plain"
+        case "xml":
+            return "application/xml"
+        default:
+            return "application/octet-stream"
+        }
+#endif
     }
 
     public func handleRequest(_ request: HTTPRequest) async throws -> HTTPResponse {

FlyingFox/Tests/Handlers/HTTPHandlerTests.swift

@@ -179,6 +179,9 @@ struct HTTPHandlerTests {
         #expect(
             FileHTTPHandler.makeContentType(for: "fish.properties") == "text/plain"
         )
+        #expect(
+            FileHTTPHandler.makeContentType(for: "fish.xml") == "application/xml"
+        )
         #expect(
             FileHTTPHandler.makeContentType(for: "fish.somefile") == "application/octet-stream"
         )