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from System.IO.IsolatedStorage import (
    IsolatedStorageFile, IsolatedStorageFileStream
)

from System.IO import (
    FileMode, StreamReader, StreamWriter
)


def CheckForFile(filename):
    store = IsolatedStorageFile.GetUserStoreForApplication()
    return store.FileExists(filename)


def DeleteFile(filename):
    store = IsolatedStorageFile.GetUserStoreForApplication()
    store.DeleteFile(filename)
    

def SaveFile(filename, data):
    store = IsolatedStorageFile.GetUserStoreForApplication()
    isolatedStream = IsolatedStorageFileStream(filename, FileMode.Create, store)

    writer = StreamWriter(isolatedStream)
    writer.Write(data)

    writer.Close()
    isolatedStream.Close()


def LoadFile(filename):
    store = IsolatedStorageFile.GetUserStoreForApplication()
    isolatedStream = IsolatedStorageFileStream(filename, FileMode.Open, store)

    reader = StreamReader(isolatedStream)
    data = reader.ReadToEnd()

    reader.Close()
    isolatedStream.Close()

    return data