Adding a option to disable the horribly slow gcode parser

printrun/gcoder.py

@@ -155,10 +155,11 @@ class GCode(object):
     depth = None
     height = None
 
-    def __init__(self,data):
+    def __init__(self,data, preprocess = True):
         self.lines = [Line(l2) for l2 in
                         (l.strip() for l in data)
                       if l2]
+        if preprocess == True:
             self._preprocess_lines()
             self.filament_length = self._preprocess_extrusion()
             self._create_layers()

prontserve.py

@@ -593,7 +593,8 @@ class Prontserve(pronsole.pronsole, EventEmitter):
         elif len(self.jobs.list) > 0:
           print "Starting the next print job"
           self.current_job = self.jobs.list.pop(0)
-          gc = gcoder.GCode(self.current_job['body'].split("\n"))
+          lines = self.current_job['body'].split("\n")
+          gc = gcoder.GCode(lines, preprocess=False)
           self.p.startprint(gc)
           self.p.paused = False
           self.fire("job_started", self.jobs.sanitize(self.current_job))