let disposebag = DisposeBag()
enum FileReadError: Error {
case fileNotFound, unreadable, encodingFailed
}
func loadText(from filename: String) -> Single<String> {
return Single.create {
single in
let disposable = Disposables.create()
guard let path = Bundle.main.path(forResource: filename, ofType: "txt") else {
single(.error(FileReadError.fileNotFound))
return disposable
}
guard let data = FileManager.default.contents(atPath: path) else {
single(.error(FileReadError.unreadable))
return disposable
}
guard let contents = String(data: data, encoding: .utf8) else {
single(.error(FileReadError.encodingFailed))
return disposable
}
single(.success(contents))
return disposable
}
}
loadText(from: "filename")
.subscribe{
switch $0 {
case .success(let string):
print(string)
case .error(let descript):
print(descript)
}
}
.disposed(by: disposebag)
