public Task <IEnumerable <Package> > QueryPackages(string query, PkgFilter pkgFilter, CollectionFilter collectionFilter, string location)
{
string localPath = null;
// there are three possibilities:
// 1. The parameter is a file on disk, or a remote file.
try {
// some kind of local file?
if (File.Exists(query))
{
return(PackagesFromLocalFile(query.EnsureFileIsLocal(), Path.GetDirectoryName(query.GetFullPath()), pkgFilter, collectionFilter));
}
var uri = new Uri(query);
if (uri.IsWebUri())
{
Task.Factory.StartNew(() => {
var lp = uri.AbsolutePath.MakeSafeFileName().GenerateTemporaryFilename();
var remoteFile = new RemoteFile(uri, lp, itemUri => {
Event <DownloadCompleted> .Raise(uri.AbsolutePath, lp); // got the file!
localPath = lp;
},
itemUri => {
localPath = null; // failed
},
(itemUri, percent) => Event <DownloadProgress> .Raise(uri.AbsolutePath, localPath, percent));
remoteFile.Get();
if (localPath != null)
{
return(PackagesFromLocalFile(localPath, null, pkgFilter, collectionFilter).Result);
}
return(Enumerable.Empty <Package>());
});
}
}
catch {
// ignore what can't be fixed
}
// 2. A directory path or filemask (ie, creating a one-time 'feed' )
if (Directory.Exists(query) || query.IndexOf('\\') > -1 || query.IndexOf('/') > -1 || (query.IndexOf('*') > -1 && query.ToLower().EndsWith(".msi")))
{
// specified a folder, or some kind of path that looks like a feed.
// add it as a feed, and then get the contents of that feed.
return((Remote.AddFeed(query, true) as Task <PackageManagerResponseImpl>).Continue(response => {
// a feed!
if (response.Feeds.Any())
{
return (Remote.FindPackages(null, pkgFilter, collectionFilter, response.Feeds.First().Location) as Task <PackageManagerResponseImpl>).Continue(response1 => response1.Packages).Result;
}
query = query.GetFullPath();
return (Remote.AddFeed(query, true) as Task <PackageManagerResponseImpl>).Continue(response2 => {
if (response.Feeds.Any())
{
return (Remote.FindPackages(null, pkgFilter, collectionFilter, response2.Feeds.First().Location) as Task <PackageManagerResponseImpl>).Continue(response1 => response1.Packages).Result;
}
return Enumerable.Empty <Package>();
}).Result;
}));
}
// 3. A partial/canonical name of a package.
return((Remote.FindPackages(query, pkgFilter, collectionFilter, location) as Task <PackageManagerResponseImpl>).Continue(response => response.Packages));
}