/// <summary>
/// Reads the contents of the specified file using the specified character encoding and returns lines of text.
/// </summary>
/// <param name="file">The file to read.</param>
/// <param name="encoding">The character encoding of the file.</param>
/// <returns>When this method completes successfully, it returns the contents of the file as a list (type IVector) of lines of text.
/// Each line of text in the list is represented by a String object.</returns>
public static Task <IList <string> > ReadLinesAsync(IStorageFile file, UnicodeEncoding encoding)
{
#if __ANDROID__ || __UNIFIED__ || WIN32 || TIZEN
return(PathIO.ReadLinesAsync(file.Path, encoding));
#elif WINDOWS_UWP || WINDOWS_APP || WINDOWS_PHONE_APP || WINDOWS_PHONE_81
return(Windows.Storage.FileIO.ReadLinesAsync((Windows.Storage.StorageFile)((StorageFile)file), (Windows.Storage.Streams.UnicodeEncoding)((int)encoding)).AsTask());
#elif WINDOWS_PHONE
return(Task.Run <IList <string> >(async() =>
{
String line;
List <String> lines = new List <String>();
Stream s = await file.OpenStreamForReadAsync();
using (StreamReader sr = new StreamReader(s, UnicodeEncodingHelper.EncodingFromUnicodeEncoding(encoding)))
while ((line = sr.ReadLine()) != null)
{
lines.Add(line);
}
return lines.ToArray();
}));
#else
throw new PlatformNotSupportedException();
#endif
}
/// <summary>
/// Writes text to the specified file using the specified character encoding.
/// </summary>
/// <param name="file">The file that the text is written to.</param>
/// <param name="contents">The text to write.</param>
/// <param name="encoding">The character encoding of the file.</param>
/// <returns>No object or value is returned when this method completes.</returns>
public static Task WriteTextAsync(IStorageFile file, string contents, UnicodeEncoding encoding)
{
#if __ANDROID__ || __UNIFIED__ || WIN32 || TIZEN
return(PathIO.WriteTextAsync(file.Path, contents, encoding));
#elif WINDOWS_UWP || WINDOWS_APP || WINDOWS_PHONE_APP || WINDOWS_PHONE_81
return(Windows.Storage.FileIO.WriteTextAsync((Windows.Storage.StorageFile)((StorageFile)file), contents, (Windows.Storage.Streams.UnicodeEncoding)((int)encoding)).AsTask());
#elif WINDOWS_PHONE
return(Task.Run(async() =>
{
Stream s = await file.OpenStreamForWriteAsync();
using (StreamWriter sw = new StreamWriter(s, UnicodeEncodingHelper.EncodingFromUnicodeEncoding(encoding)))
sw.Write(contents);
}));
#else
throw new PlatformNotSupportedException();
#endif
}
/// <summary>
/// Reads the contents of the specified file using the specified character encoding and returns text.
/// </summary>
/// <param name="file">The file to read.</param>
/// <param name="encoding">The character encoding of the file.</param>
/// <returns>When this method completes successfully, it returns the contents of the file as a text string.</returns>
public static Task <string> ReadTextAsync(IStorageFile file, UnicodeEncoding encoding)
{
#if __ANDROID__ || __UNIFIED__ || WIN32 || TIZEN
return(PathIO.ReadTextAsync(file.Path, encoding));
#elif WINDOWS_UWP || WINDOWS_APP || WINDOWS_PHONE_APP || WINDOWS_PHONE_81
return(Windows.Storage.FileIO.ReadTextAsync((Windows.Storage.StorageFile)((StorageFile)file), (Windows.Storage.Streams.UnicodeEncoding)((int)encoding)).AsTask());
#elif WINDOWS_PHONE
return(Task.Run <string>(async() =>
{
Stream s = await((StorageFile)file).OpenStreamForReadAsync();
using (StreamReader sr = new StreamReader(s, UnicodeEncodingHelper.EncodingFromUnicodeEncoding(encoding)))
return await sr.ReadToEndAsync();
}));
#else
throw new PlatformNotSupportedException();
#endif
}
/// <summary>
/// Writes lines of text to the specified file using the specified character encoding.
/// </summary>
/// <param name="file">The file that the lines are written to.</param>
/// <param name="lines">The list of text strings to append as lines.</param>
/// <param name="encoding">The character encoding of the file.</param>
/// <returns>No object or value is returned when this method completes.</returns>
public static Task WriteLinesAsync(IStorageFile file, IEnumerable <string> lines, UnicodeEncoding encoding)
{
#if __ANDROID__ || __UNIFIED__ || WIN32 || TIZEN
return(PathIO.WriteLinesAsync(file.Path, lines, encoding));
#elif WINDOWS_UWP || WINDOWS_APP || WINDOWS_PHONE_APP || WINDOWS_PHONE_81
return(Windows.Storage.FileIO.WriteLinesAsync((Windows.Storage.StorageFile)((StorageFile)file), lines, (Windows.Storage.Streams.UnicodeEncoding)((int)encoding)).AsTask());
#elif WINDOWS_PHONE
return(Task.Run(async() =>
{
Stream s = await file.OpenStreamForWriteAsync();
using (StreamWriter sw = new StreamWriter(s, UnicodeEncodingHelper.EncodingFromUnicodeEncoding(encoding)))
{
foreach (string line in lines)
{
sw.WriteLine(line);
}
}
}));
#else
throw new PlatformNotSupportedException();
#endif
}