Initial commit

.gitignore

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+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## User settings
+xcuserdata/
+
+## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
+*.xcscmblueprint
+*.xccheckout
+
+## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
+build/
+DerivedData/
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+## Obj-C/Swift specific
+*.hmap
+
+## App packaging
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+# *.xcodeproj
+#
+# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
+# hence it is not needed unless you have added a package configuration file to your project
+# .swiftpm
+
+.build/
+
+# CocoaPods
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+#
+# Pods/
+#
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+#
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build/
+
+# Accio dependency management
+Dependencies/
+.accio/
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo.
+# Instead, use fastlane to re-generate the screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+#
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/

HelperConstants.swift

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+//
+//  HelperConstants.swift
+//  ImageWriter
+//
+//  Copyright © 2020 xxmicloxx. All rights reserved.
+//
+
+import Foundation
+
+class HelperConstants {
+    @available(*, unavailable) private init() {}
+
+    static let Identifier = "com.xxmicloxx.ImageWriterHelper"
+
+    static let WritePermission = "com.xxmicloxx.ImageWriterHelper.write"
+    static let CancelPermission = "com.xxmicloxx.ImageWriterHelper.cancel"
+    static let SubscribePermission = "com.xxmicloxx.ImageWriterHelper.subscribe"
+    static let StopPermission = "com.xxmicloxx.ImageWriterHelper.stop"
+    static let EjectPermission = "com.xxmicloxx.ImageWriterHelper.eject"
+
+    static let AllPermissions = [
+        HelperConstants.WritePermission,
+        HelperConstants.CancelPermission,
+        HelperConstants.SubscribePermission,
+        HelperConstants.StopPermission,
+        HelperConstants.EjectPermission
+    ]
+
+    static let Version = "1.1.27"
+}
+
+@objc enum HelperError: Int {
+    case unknownError
+    case claimError
+    case cancelledError
+    case readError
+    case writeError
+    case outOfSpaceError
+}