public long ForceSeek(long offset, SeekOrigin origin)
{
long newOffset;
switch (origin)
{
case SeekOrigin.Begin:
newOffset = offset;
break;
case SeekOrigin.Current:
newOffset = this.currentOffset + offset;
break;
case SeekOrigin.End:
newOffset = this.Length + offset;
break;
default:
CommonUtility.ArgumentOutOfRange("origin", origin);
throw new ArgumentOutOfRangeException();
}
CommonUtility.AssertInBounds("offset", newOffset, 0, this.Length);
this.currentOffset = (int)newOffset;
return(this.currentOffset);
}
/// <summary>
/// Parses the snapshot time.
/// </summary>
/// <param name="snapshot">The snapshot time.</param>
/// <returns>The parsed snapshot time.</returns>
internal static DateTimeOffset ParseSnapshotTime(string snapshot)
{
DateTimeOffset snapshotTime;
if (!DateTimeOffset.TryParse(
snapshot,
CultureInfo.InvariantCulture,
DateTimeStyles.AdjustToUniversal,
out snapshotTime))
{
CommonUtility.ArgumentOutOfRange("snapshot", snapshot);
}
return(snapshotTime);
}
/// <summary>
/// Determines which location can the listing command target by looking at the
/// continuation token.
/// </summary>
/// <param name="token">Continuation token</param>
/// <returns>Location mode</returns>
internal static CommandLocationMode GetListingLocationMode(IContinuationToken token)
{
if ((token != null) && token.TargetLocation.HasValue)
{
switch (token.TargetLocation.Value)
{
case StorageLocation.Primary:
return(CommandLocationMode.PrimaryOnly);
case StorageLocation.Secondary:
return(CommandLocationMode.SecondaryOnly);
default:
CommonUtility.ArgumentOutOfRange("TargetLocation", token.TargetLocation.Value);
break;
}
}
return(CommandLocationMode.PrimaryOrSecondary);
}