/// <summary>
/// Looks up a filter by its name.
/// </summary>
/// <param name="filterName">The name of the filter that we're looking for.</param>
/// <returns>Returns the filter, or null of the specified filter name did not exist.</returns>
public DataFileDef GetFilterByName(string filterName)
{
DataFileDef returnValue = null;
m_dataFileDefs.TryGetValue(filterName, out returnValue);
return(returnValue);
}
public FileGraph ApplyFilterToFile(EmbeddedFile file, string filterName,
IParserOutput output)
{
if (file == null || filterName == null || output == null)
{
throw new ArgumentException("Invalid parameters specified.");
}
// lookup the filter with the specified name
DataFileDef filter = m_mapping.GetFilterByName(filterName);
if (filter == null)
{
output.HandleFatalError("The specified filter does not exist.");
}
FileGraph graph = new FileGraph(file.FileId);
try
{
// open the input file
file.PrepareFileForReading();
// create a root node in the graph
graph.RootNode = new GraphNode("Root node", NodeType.Complex, file.Position);
foreach (object filterObject in filter.Items)
{
DecodeEntry(graph.RootNode, filterObject, output, file);
}
graph.RootNode.FilePositionEnd = file.Position;
graph.UpdateEndPositionOfNodes();
}
catch (Exception ex)
{
output.HandleFatalError("Unexpected exception: " + ex.Message);
}
finally
{
file.FileReadingComplete();
}
return(graph);
}
