public static async Task <bool> Download(string version, string gameId, string outputFile, CancellationToken cancellation)
{
// Check if the version is known
Update update = Update.Find(version);
string dir = Path.GetDirectoryName(outputFile);
if (string.IsNullOrEmpty(dir))
{
throw new ArgumentException(@"Outputfile must be a full path", outputFile);
}
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
Interaction.Instance.SetProgressMaximum(updateSize != 0 ? updateSize : update.Size);
try
{
using (Stream s = await OpenUrl(update, gameId))
{
if (cancellation.IsCancellationRequested)
{
return(false);
}
string tmpFile = string.Concat(outputFile, ".tmp");
using (FileStream fs = new FileStream(tmpFile, FileMode.Create, FileAccess.Write))
{
if (isRarStream)
{
// Wrap into unrar
RarReader reader = RarReader.Open(s, RarOptions.None);
if (!reader.MoveToNextEntry())
{
return(false);
}
reader.WriteEntryTo(new WriteProgressStream(fs), cancellation);
}
else
{
int bytesRead = -1, totalBytesRead = 0;
byte[] buffer = new byte[2048];
while (bytesRead != 0)
{
if (cancellation.IsCancellationRequested)
{
break;
}
bytesRead = await s.ReadAsync(buffer, 0, buffer.Length);
fs.Write(buffer, 0, bytesRead);
totalBytesRead += bytesRead;
Interaction.Instance.ReportProgress(totalBytesRead);
}
}
}
if (cancellation.IsCancellationRequested)
{
File.Delete(tmpFile);
return(false);
}
if (File.Exists(outputFile))
{
File.Delete(outputFile);
}
File.Move(tmpFile, outputFile);
return(true);
}
}
catch (WebException)
{
return(false);
}
}