private async Task <PPError> TouchAsyncCore(DateTime lastAccessTime, DateTime lastModifiedTime, MessageLoop messageLoop = null)
{
var tcs = new TaskCompletionSource <PPError>();
EventHandler <PPError> handler = (s, e) => { tcs.TrySetResult(e); };
try
{
HandleTouch += handler;
if (MessageLoop == null && messageLoop == null)
{
Touch(lastAccessTime, lastModifiedTime);
}
else
{
Action <PPError> action = new Action <PPError>((e) =>
{
var result = (PPError)PPBFileRef.Touch(this,
PepperSharpUtils.ConvertToPepperTimestamp(lastAccessTime),
PepperSharpUtils.ConvertToPepperTimestamp(lastModifiedTime),
new BlockUntilComplete()
);
tcs.TrySetResult(result);
}
);
InvokeHelper(action, messageLoop);
}
return(await tcs.Task);
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
tcs.SetException(exc);
return(PPError.Aborted);
}
finally
{
HandleTouch -= handler;
}
}
/// <summary>
/// Touch() Updates time stamps for a file. You must have write access to the
/// file if it exists in the external filesystem.
/// </summary>
/// <param name="lastAccessTime">The last time the file was accessed.</param>
/// <param name="lastModifiedTime">The last time the file was modified.</param>
/// <returns>Ok if all went well</returns>
public PPError Touch(DateTime lastAccessTime, DateTime lastModifiedTime)
=> (PPError)PPBFileRef.Touch(this,
PepperSharpUtils.ConvertToPepperTimestamp(lastAccessTime),
PepperSharpUtils.ConvertToPepperTimestamp(lastModifiedTime),
new CompletionCallback(OnTouch));
/// <summary>
/// AppendFileRangeToBody() is used to append part or
/// all of a file, to be uploaded, to the request body. A content-length
/// request header will be automatically generated.
/// </summary>
/// <param name="fileRef">A <code>FileRef</code> containing the file
/// reference.</param>
/// <param name="startOffset">An optional starting point offset within the
/// file.</param>
/// <param name="length">An optional number of bytes of the file to
/// be included. If the value is -1, then the sub-range to upload extends
/// to the end of the file.</param>
/// <param name="utcExpectedLastModifiedTime">An optional last
/// modified time stamp used to validate that the file was not modified since
/// the given time before it was uploaded. The upload will fail with an error
/// code of <code>ErrorFilechanged</code> if the file has been modified
/// since the given time. If utcExpectedLastModifiedTime is null, then no
/// validation is performed.</param>
/// <returns>true if successful, false if any of the parameters are invalid.</returns>
public bool AppendFileRangeToBody(FileRef fileRef,
long startOffset,
long length,
DateTime?utcExpectedLastModifiedTime = null)
=> PPBURLRequestInfo.AppendFileToBody(this,
fileRef,
startOffset,
length,
(utcExpectedLastModifiedTime.HasValue) ? PepperSharpUtils.ConvertToPepperTimestamp(utcExpectedLastModifiedTime.Value) : 0) == PPBool.True;