private void ProcessNodeConnections(GraphvizTableRow row, GraphvizNode node)
{
if (ConnIndex <= 0)
{
return;
}
string connections = row[ConnIndex].Value;
if (string.IsNullOrEmpty(connections))
{
return;
}
var nodes = connections.Split(new string[] { ",", ";" }, StringSplitOptions.RemoveEmptyEntries);
foreach (var n in nodes)
{
string dest = n.Trim();
if (!string.IsNullOrEmpty(dest))
{
AddEdgeIfNotExist(node.Name, dest, GraphvizEdge.EdgeDir.Normal);
}
}
}
private void ProcessNode(GraphvizTableRow row)
{
GraphvizNode node = AddNodeIfNotExist(row[0].Value);
ProcessNodeAttributes(row, node);
ProcessNodeConnections(row, node);
}
public void Add(GraphvizTableRow row)
{
if (row != null)
{
Rows.Add(row);
}
}
private void ProcessEdge(GraphvizTableRow row)
{
string edges = row[0].Value;
GraphvizEdge.EdgeDir dir = ToDir(edges);
var nodes = edges.Split(new string[] { "<->", "->", "--" }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < nodes.Length - 1; i++)
{
string from = nodes[i].Trim();
string to = nodes[i + 1].Trim();
if (!string.IsNullOrEmpty(from) && !string.IsNullOrEmpty(to))
{
GraphvizEdge edge = AddEdgeIfNotExist(from, to, dir);
ProcessEdgeAttributes(row, edge);
}
}
}
private static GraphvizTableRow ToRow(string tableRow)
{
GraphvizTableRow row = new GraphvizTableRow();
if (!IsTableRow(tableRow))
{
return(row);
}
var cells = tableRow.Split('|');
for (int i = 1; i < cells.Length - 1; i++)
{
// create cells except first and last empty string
row.Add(new GraphvizTableCell(cells[i].Trim()));
}
return(row);
}
private void ProcessEdgeAttributes(GraphvizTableRow row, GraphvizEdge edge)
{
if (LabelIndex >= 0)
{
string label = row[LabelIndex]?.Value;
edge.Label = label?.Trim();
}
if (ColorIndex >= 0)
{
string color = row[ColorIndex]?.Value;
edge.Color = color?.Trim();
}
if (ShapeIndex >= 0)
{
string shape = row[ShapeIndex]?.Value;
edge.ArrowHead = shape?.Trim();
}
}
private void ProcessNodeAttributes(GraphvizTableRow row, GraphvizNode node)
{
if (LabelIndex >= 0)
{
string label = row[LabelIndex]?.Value;
node.Label = label?.Trim();
}
if (ShapeIndex >= 0)
{
string shape = row[ShapeIndex]?.Value;
node.Shape = shape?.Trim();
}
if (ColorIndex >= 0)
{
string color = row[ColorIndex]?.Value;
node.FillColor = color?.Trim();
}
}
private string MakeGraphvizDotContent(GraphvizTable table)
{
if ((table == null) || (table.RowCount < 2))
{
return(null);
}
GraphvizTableRow header = table[0];
ShapeIndex = header.Index("Shape");
LabelIndex = header.Index("Label");
ConnIndex = header.Index("Connections");
ColorIndex = header.Index("Color");
for (int i = 1; i < table.RowCount; i++)
{
GraphvizTableRow row = table[i];
bool? isNode = row[0].IsDotNode();
if (!isNode.HasValue)
{
return(null);
}
if (isNode.Value)
{
if (row[0].Value.Contains(":"))
{
DotModel.Add(new GraphvizRankNode(row[0].Value));
}
else
{
ProcessNode(row);
}
}
else
{
ProcessEdge(row);
}
}
return(DotModel.GetDotString());
}