feat: implement mimetype (#32)

Author: grabbou

example/tests/benchmark.tsx

@@ -447,7 +447,7 @@ const styles = StyleSheet.create({
 setTimeout(async () => {
   const files = await showOpenFilePicker({
     startIn: 'desktop',
-    types: [{ description: 'PDF files', accept: { 'text/plain': ['.txt'] } }],
+    types: [{ description: 'PDF files', accept: { 'application/pdf': ['.pdf'] } }],
   })
 
   if (!files[0]) {

packages/react-native-fast-io/ios/HybridFileSystem.swift

@@ -21,12 +21,15 @@ class HybridFileSystem : NSObject, UIDocumentPickerDelegate, HybridFileSystemSpe
   func getMetadata(path: String) throws -> Metadata {
     let attributes = try FileManager.default.attributesOfItem(atPath: path)
     let fileURL = URL(fileURLWithPath: path)
+    
+    let mimeType = UTType(filenameExtension: fileURL.pathExtension)?.preferredMIMEType ?? ""
 
     return Metadata.init(
       name: fileURL.lastPathComponent,
       path: path,
       root: "/",
       size: attributes[.size] as? Double ?? 0,
+      type: mimeType,
       lastModified: (attributes[.modificationDate] as? Date)?.timeIntervalSince1970 ?? 0 * 1000
     )
   }

packages/react-native-fast-io/nitrogen/generated/ios/swift/Metadata.swift

@@ -18,8 +18,8 @@ public extension Metadata {
   /**
    * Create a new instance of `Metadata`.
    */
-  init(name: String, path: String, root: String, size: Double, lastModified: Double) {
-    self.init(std.string(name), std.string(path), std.string(root), size, lastModified)
+  init(name: String, path: String, root: String, size: Double, type: String, lastModified: Double) {
+    self.init(std.string(name), std.string(path), std.string(root), size, std.string(type), lastModified)
   }
 
   var name: String {
@@ -66,6 +66,17 @@ public extension Metadata {
     }
   }
 
+  var type: String {
+    @inline(__always)
+    get {
+      return String(self.__type)
+    }
+    @inline(__always)
+    set {
+      self.__type = std.string(newValue)
+    }
+  }
+  
   var lastModified: Double {
     @inline(__always)
     get {

packages/react-native-fast-io/nitrogen/generated/shared/c++/Metadata.hpp

@@ -33,10 +33,11 @@ namespace margelo::nitro::fastio {
     std::string path     SWIFT_PRIVATE;
     std::string root     SWIFT_PRIVATE;
     double size     SWIFT_PRIVATE;
+    std::string type     SWIFT_PRIVATE;
     double lastModified     SWIFT_PRIVATE;
 
   public:
-    explicit Metadata(std::string name, std::string path, std::string root, double size, double lastModified): name(name), path(path), root(root), size(size), lastModified(lastModified) {}
+    explicit Metadata(std::string name, std::string path, std::string root, double size, std::string type, double lastModified): name(name), path(path), root(root), size(size), type(type), lastModified(lastModified) {}
   };
 
 } // namespace margelo::nitro::fastio
@@ -55,6 +56,7 @@ namespace margelo::nitro {
         JSIConverter<std::string>::fromJSI(runtime, obj.getProperty(runtime, "path")),
         JSIConverter<std::string>::fromJSI(runtime, obj.getProperty(runtime, "root")),
         JSIConverter<double>::fromJSI(runtime, obj.getProperty(runtime, "size")),
+        JSIConverter<std::string>::fromJSI(runtime, obj.getProperty(runtime, "type")),
         JSIConverter<double>::fromJSI(runtime, obj.getProperty(runtime, "lastModified"))
       );
     }
@@ -64,6 +66,7 @@ namespace margelo::nitro {
       obj.setProperty(runtime, "path", JSIConverter<std::string>::toJSI(runtime, arg.path));
       obj.setProperty(runtime, "root", JSIConverter<std::string>::toJSI(runtime, arg.root));
       obj.setProperty(runtime, "size", JSIConverter<double>::toJSI(runtime, arg.size));
+      obj.setProperty(runtime, "type", JSIConverter<std::string>::toJSI(runtime, arg.type));
       obj.setProperty(runtime, "lastModified", JSIConverter<double>::toJSI(runtime, arg.lastModified));
       return obj;
     }
@@ -76,6 +79,7 @@ namespace margelo::nitro {
       if (!JSIConverter<std::string>::canConvert(runtime, obj.getProperty(runtime, "path"))) return false;
       if (!JSIConverter<std::string>::canConvert(runtime, obj.getProperty(runtime, "root"))) return false;
       if (!JSIConverter<double>::canConvert(runtime, obj.getProperty(runtime, "size"))) return false;
+      if (!JSIConverter<std::string>::canConvert(runtime, obj.getProperty(runtime, "type"))) return false;
       if (!JSIConverter<double>::canConvert(runtime, obj.getProperty(runtime, "lastModified"))) return false;
       return true;
     }

packages/react-native-fast-io/src/native/fs.nitro.ts

@@ -7,6 +7,7 @@ export type Metadata = {
   path: string
   root: string
   size: number
+  type: string
   lastModified: number
 }
 

packages/react-native-fast-io/src/w3c/fs.ts

@@ -24,11 +24,12 @@ export class File extends Blob implements globalThis.File {
 class NativeFile extends File {
   nativeStream: ReadableStream<Uint8Array>
 
-  constructor({ name, path, size, lastModified }: Metadata) {
+  constructor({ name, path, type, size, lastModified }: Metadata) {
     const inputStream = FileSystem.createInputStream(path)
 
     super([], name, {
       lastModified,
+      type,
     })
 
     this.nativeStream = toReadableStream(inputStream)