improve performance and finish generate_options()

src/import.jl

@@ -1,5 +1,6 @@
-# functions for importing DAGs from a file
+using Printf
 
+# functions for importing DAGs from a file
 regex_a = r"^[A-C]\d+$"                     # Regex for the initial particles
 regex_c = r"^[A-C]\(([^']*),([^']*)\)$"     # Regex for the combinations of 2 particles
 regex_m = r"^M\(([^']*),([^']*),([^']*)\)$" # Regex for the combinations of 3 particles
@@ -22,10 +23,12 @@ end
 function importTxt(filename::String)
     file = open(filename, "r")
 
+    println("Opened file")
     nodes_string = readline(file)
     nodes = parse_nodes(nodes_string)
 
     close(file)
+    println("Read file")
 
     graph = DAG()
 
@@ -36,7 +39,15 @@ function importTxt(filename::String)
     # remember the data out nodes for connection
     dataOutNodes = Dict()
 
-    for node in nodes
+    println("Building graph")
+    noNodes = 0
+    nodesToRead = length(nodes)
+    while !isempty(nodes)
+        node = popfirst!(nodes)
+        noNodes += 1
+        if (noNodes % 100 == 0)
+            @printf "\rReading Nodes... %.2f%%" (100. * noNodes / nodesToRead)
+        end
         if occursin(regex_a, node)
             # add nodes and edges for the state reading to u(P(Particle))
             data_in = insert_node(graph, make_node(DataTask(4))) # read particle data node
@@ -116,7 +127,7 @@ function importTxt(filename::String)
 
             insert_edge(graph, make_edge(data_out, sum_node))
         elseif occursin(regex_plus, node)
-            println("Found sum node, end")
+            println("\rReading Nodes Complete    ")
         else
             error("Unknown node '", node, "' while reading from file ", filename)
         end