public DrwBlock ExtractDrwBlockFromNav(XPathNavigator nav, ReplacementConfiguration config)
{
if (!nav.HasChildren)
{
return(null);
}
int id = -1;
string description = null;
nav.MoveToFirstChild();
do
{
if (nav.Name.ToLower() == "id")
{
try
{
id = int.Parse(nav.Value.Trim());
}
catch (Exception e) { throw new Exception("Id not an integer in DrwFile", e); }
}
else if (nav.Name.ToLower() == "description")
{
description = ReplacementConfigurationSanitizer(nav.Value, config);
}
} while (nav.MoveToNext());
DrwBlock block = new DrwBlock(id, description);
return(block);
}
public FBPGraph(List <DrwBlock> blocks, List <DrwConnection> connections)
{
this.blocks = blocks;
this.connections = connections;
// Build block from id
foreach (var block in blocks)
{
GetBlockFromId[block.id] = block;
if (block.description.Trim().ToLower() == "start")
{
StartNode = block;
}
}
// Build GetFromBlock and GetToBlock
foreach (var connection in connections)
{
if (!GetFromBlocks.ContainsKey(connection.toId))
{
GetFromBlocks[connection.toId] = new List <DrwBlock>();
}
GetFromBlocks[connection.toId].Add(GetBlockFromId[connection.fromId]);
if (!GetToBlocks.ContainsKey(connection.fromId))
{
GetToBlocks[connection.fromId] = new List <DrwBlock>();
}
GetToBlocks[connection.fromId].Add(GetBlockFromId[connection.toId]);
}
}
public FBPGraph GenerateFBPGraphFromDrwFile(Stream drwFileStream, ReplacementConfiguration configuration)
{
XPathDocument xmlPathDoc = new XPathDocument(drwFileStream);
XPathNavigator navigator = xmlPathDoc.CreateNavigator();
XPathNodeIterator blockIterator = navigator.SelectDescendants("block", "", false);
XPathNodeIterator connectionIterator = navigator.SelectDescendants("connection", "", false);
int count = connectionIterator.Count;
List <DrwBlock> blocks = new List <DrwBlock>();
List <DrwConnection> connections = new List <DrwConnection>();
while (blockIterator.MoveNext())
{
XPathNavigator nav = blockIterator.Current.Clone();
DrwBlock block = utility.ExtractDrwBlockFromNav(nav, configuration);
if (block != null)
{
blocks.Add(block);
}
}
while (connectionIterator.MoveNext())
{
XPathNavigator nav = connectionIterator.Current.Clone();
DrwConnection connection = utility.ExtractDrwConnectionFromNav(nav);
if (connection != null)
{
connections.Add(connection);
}
}
FBPGraph graph = new FBPGraph(blocks, connections);
return(graph);
}
private void DfsTraversal(DrwBlock currentNode, ref Dictionary <int, bool> nodeVisited, ref List <DrwBlock> result)
{
if (result == null)
{
result = new List <DrwBlock>();
}
if (nodeVisited.ContainsKey(currentNode.id) && nodeVisited[currentNode.id] == true)
{
return;
}
result.Add(currentNode);
if (GetToBlocks.ContainsKey(currentNode.id))
{
foreach (var node in GetToBlocks[currentNode.id])
{
DfsTraversal(node, ref nodeVisited, ref result);
}
}
}