protected override void OnQueryFiltering(MediaQueryContext context, string protocol)
{
// TODO: We *could* do more complex parsing to automatically determine mysite.com/filename pattern without http but I don't reckon it's worth it.
context.Locations.Add(new MediaLocationContext(){
Location = context.Query,
QueryName = "Http",
Stream = new HttpStreamAccessor(context.Query)
});
}
/// <summary>
/// TODO: Code repeated from QueryFiltering - could optimise slightly
/// </summary>
/// <param name="context"></param>
public void QueryFiltered(MediaQueryContext context)
{
var protocol = GetProtocol(context.Query);
if (String.IsNullOrWhiteSpace(protocol)) return;
if (Protocols().Any(p => p == protocol))
{
OnQueryFiltered(context, protocol);
}
}
public void QueryFiltering(MediaQueryContext context)
{
// Opposite of URL location filter
if (context.Query.StartsWith("http://")
|| context.Query.StartsWith("https://")) return;
var paths = new List<String>();
if (context.Query== "*")
{
paths.Add(null);
}
else
{
paths.AddRange(context.Query.Split(';'));
}
List<IStorageFile> files = new List<IStorageFile>();
foreach (var folder in paths)
{
// Currently we can only use try/catch because *there's no "file exists" method*!!
try
{
var storageFiles = _storageProvider.ListFiles(folder);
files.AddRange(storageFiles);
}
catch
{
try
{
// That wasn't a folder. Let's try getting a single file.
var file = _storageProvider.GetFile(folder);
files.Add(file);
}
catch
{
// No files
}
}
}
foreach (var file in files)
{
string filePath = file.GetPath();
context.Locations.Add(new FileSystemLocationContext()
{
QueryName = "FileSystem",
Location = filePath,
File = file,
Stream = new FileSystemStreamAccessor(file.OpenRead())
});
}
}
public void LocationFiltering(MediaQueryContext query, MediaLocationContext location)
{
// TODO: Could be an interface instead for further extensibility
if (!(location is FileSystemLocationContext)) return;
var fileLocation = location as FileSystemLocationContext;
// Add header detail
query.Headers.Add(
new MediaHeaderContext(location)
{
ContentLength = fileLocation.File.GetSize(),
// TODO: MIME will be auto-accepted since we leave ContentType blank; so format match will just be on extension. Not a viable long-term solution.
ContentType = "", //fileLocation.File.GetFileType(),// .Trim('.').ToLower()),
HashCode = fileLocation.File.GetHashCode(),
TimeStamp = fileLocation.File.GetLastUpdated(),
Title = fileLocation.File.GetName().ExtractFileName()
});
}
public void HeaderFiltering(MediaQueryContext query, MediaHeaderContext header)
{
// Build a temporary source to test formats
var testSource = new MediaSource()
{
Url = header.LocationContext.Location,
TimeStamp = header.TimeStamp
};
testSource.Metadata["ContentLength"] = header.ContentLength.ToString();
testSource.Metadata["MimeType"] = header.ContentType;
testSource.Metadata["Title"] = header.Title;
testSource.Metadata["SourceName"] = HeaderName;
var testContext = new MediaSourceContext(testSource)
{
Stream = header.LocationContext.Stream
};
var formats = _gardenService.Value.MatchFormats(testContext,query.MediaStereotype).ToList();
// Match a format, add it to sources
if (formats.Any())
{
testContext.Formats = formats;
var format = formats.First();
testSource.MediaStereotype = format.MediaStereotype;
testSource.FormatName = format.FormatName;
query.Sources.Add(testContext);
}
else
{
// Helpful message for debugging sources that don't work :)
Services.Notifier.Warning(T("No matching media formats found at {0} (with MIME type '{1}' and file extension '{2}')",
testSource.Url,
testSource.Metadata["MimeType"],
testSource.FileExtension()
));
}
}
public void LocationFiltered(MediaQueryContext query, MediaLocationContext location)
{
if (!(location is FileSystemLocationContext)) return;
}
public void QueryFiltered(MediaQueryContext context)
{
}
protected abstract void OnQueryFiltered(MediaQueryContext context, string protocol);
protected override void OnQueryFiltered(MediaQueryContext context, string protocol)
{
// TODO: Cleanup, ensure HTTP handles are closed (later)
}
public void HeaderFiltered(MediaQueryContext query, MediaHeaderContext header)
{
}
public void LocationFiltered(MediaQueryContext query, MediaLocationContext location)
{
return;
}
public void LocationFiltering(MediaQueryContext query, MediaLocationContext location)
{
if (location.QueryName != "Http") return;
query.Headers.Add(ProbeHttpHeaders(location));
}
