first commit

node_modules/expo-file-system/ios/FileSystemFileHandle.swift

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+import Foundation
+import ExpoModulesCore
+
+@available(iOS 14, tvOS 14, *)
+internal final class FileSystemFileHandle: SharedRef<FileHandle> {
+  let file: FileSystemFile
+  let handle: FileHandle
+
+  init(file: FileSystemFile) throws {
+    self.file = file
+    handle = try FileHandle(forUpdating: file.url)
+    super.init(handle)
+  }
+
+  func read(_ length: Int) throws -> Data {
+    do {
+      let data = try handle.read(upToCount: length)
+      return data ?? Data()
+    } catch {
+      throw UnableToReadHandleException(error.localizedDescription)
+    }
+  }
+
+  func write(_ bytes: Data) throws {
+    try handle.write(contentsOf: bytes)
+  }
+
+  func close() throws {
+    try handle.close()
+  }
+
+  var offset: UInt64? {
+    get {
+      try? handle.offset()
+    }
+    set(newOffset) {
+      guard let newOffset else {
+        return
+      }
+      handle.seek(toFileOffset: newOffset)
+    }
+  }
+
+  var size: UInt64? {
+    do {
+      let offset = try handle.offset()
+      let size = try handle.seekToEnd()
+      handle.seek(toFileOffset: offset)
+      return size
+    } catch {
+      return nil
+    }
+  }
+}