private static DownloadData Load(DownloadControllerOptions options)
{
try
{
var json = options.Storage.ReadAllText(options.DownloadingInfoPath);
return(JsonSerializer.Deserialize <DownloadData>(json));
}
catch
{
return(new DownloadData());
}
}
private DownloadController(DownloadControllerOptions options, DownloadData downloadData)
: base(new DownloaderOptions()
{
Uri = options.Uri,
DownloadedRanges = downloadData.DownloadedRanges,
AutoDisposeStream = true,
IsStopped = options.IsStopped,
AllowResuming = options.AllowResuming,
MaxPartCount = options.MaxPartCount,
MaxRetryCount = options.MaxRetryCount,
PartSize = options.PartSize,
WriteBufferSize = options.WriteBufferSize,
})
{
DownloadPath = options.DownloadPath;
_downloadingInfoPath = options.DownloadingInfoPath;
_downloadingPath = options.DownloadingPath;
_storage = options.Storage;
}
public static DownloadController Create(DownloadControllerOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (options.DownloadPath == null)
{
throw new ArgumentNullException(nameof(options.DownloadPath));
}
options.DownloadingPath ??= options.DownloadPath + options.DownloadingExtension;
options.DownloadingInfoPath ??= options.DownloadPath + options.DownloadingInfoExtension;
var downloadData = Load(options);
options.Uri ??= downloadData.Uri ?? throw new ArgumentNullException(nameof(options.Uri));
var ret = new DownloadController(options, downloadData);
if (!options.IsStopped)
{
ret.Init().GetAwaiter();
}
return(ret);
}