public void RemoveDownload(HttpFileDownloadTask task)
{
if (task == null)
{
throw new ArgumentNullException("task");
}
lock (SyncRoot) {
if (disposed)
{
return;
}
tasks.Remove(task);
}
}
public HttpFileDownloadTask CreateDownloadTask(string url, object userState)
{
Uri uri;
if (String.IsNullOrEmpty(url))
{
throw new ArgumentException("Cannot be null or empty", "url");
}
else if (!Uri.TryCreate(url, UriKind.Absolute, out uri))
{
throw new UriFormatException("url: Is not a well formed Uri.");
}
string[] segments = uri.Segments;
string fileName = System.Web.HttpUtility.UrlDecode(segments[segments.Length - 1].Trim('/'));
MD5 hasher = MD5.Create();
byte[] hash = hasher.ComputeHash(
Encoding.UTF8.GetBytes(url)
);
string urlHash = BitConverter.ToString(hash)
.Replace("-", String.Empty)
.ToLower();
string remoteUri = url;
string localPath = tmpDir + urlHash + Path.DirectorySeparatorChar + Hyena.StringUtil.EscapeFilename(fileName);
HttpFileDownloadTask task = null;
string [] parts = fileName.Split('.');
if (parts.Length > 0 && downloader_types.ContainsKey(parts[parts.Length - 1]))
{
task = (HttpFileDownloadTask)Activator.CreateInstance(downloader_types[parts[parts.Length - 1]], remoteUri, localPath, userState);
}
else
{
task = new HttpFileDownloadTask(url, localPath, userState);
}
return(task);
}
public void RemoveDownload(HttpFileDownloadTask task)
{
if (task == null) {
throw new ArgumentNullException ("task");
}
lock (SyncRoot) {
if (disposed) {
return;
}
tasks.Remove (task);
}
}
public HttpFileDownloadTask CreateDownloadTask(string url, object userState)
{
Uri uri;
if (String.IsNullOrEmpty (url)) {
throw new ArgumentException ("Cannot be null or empty", "url");
} else if (!Uri.TryCreate (url, UriKind.Absolute, out uri)) {
throw new UriFormatException ("url: Is not a well formed Uri.");
}
string[] segments = uri.Segments;
string fileName = System.Web.HttpUtility.UrlDecode (segments[segments.Length-1].Trim ('/'));
MD5 hasher = MD5.Create ();
byte[] hash = hasher.ComputeHash (
Encoding.UTF8.GetBytes (url)
);
string urlHash = BitConverter.ToString (hash)
.Replace ("-", String.Empty)
.ToLower ();
string remoteUri = url;
string localPath = tmpDir + urlHash + Path.DirectorySeparatorChar + Hyena.StringUtil.EscapeFilename (fileName);
HttpFileDownloadTask task = null;
string [] parts = fileName.Split ('.');
if (parts.Length > 0 && downloader_types.ContainsKey (parts[parts.Length - 1])) {
task = (HttpFileDownloadTask) Activator.CreateInstance (downloader_types[parts[parts.Length - 1]], remoteUri, localPath, userState);
} else {
task = new HttpFileDownloadTask (url , localPath, userState );
}
return task;
}
private void TaskAddedAction(HttpFileDownloadTask task)
{
Feed parentFeed = null;
FeedEnclosure enc = task.UserState as FeedEnclosure;
if (enc != null) {
lock (sync) {
parentFeed = enc.Item.Feed;
if (parentFeed != null && queued_downloads.ContainsKey (enc)) {
if (queued_downloads.Count == 0) {
download_handle.Reset ();
}
enc.DownloadStatus = FeedDownloadStatus.Pending;
//parentFeed.IncrementQueuedDownloadCount ();
}
}
}
}
private void DownloadTaskRemoved(FeedEnclosure enc, HttpFileDownloadTask task, bool decQueuedCount)
{
if (queued_downloads.ContainsKey (enc)) {
queued_downloads.Remove (enc);
task.Completed -= OnDownloadTaskCompletedHandler;
if (decQueuedCount) {
//enc.Item.Feed.DecrementQueuedDownloadCount ();
}
if (queued_downloads.Count == 0) {
if (download_handle != null) {
download_handle.Set ();
}
}
}
}
