def matchClosed(row):
match = re.match('[msvt]\d+(\(-?\d+,-?\d+\))+$', row['Name'])
if not match:
return None
degree = safeDictLookup(row,"InvariantTraceFieldDegree", 1000)
if not degree:
degree = 1000
return (row["Tetrahedra"], degree, row["Name"])
def matchLink(row):
crossings = None
components = None
index = None
preference = 1000
matchRolfsen = re.match("(\d+)(\^(\d+))?_(\d+)", row['Name'])
if matchRolfsen:
crossings, s, components, index = matchRolfsen.groups()
index = int(index)
preference = 0
matchKnot = re.match("(\d+)([an])(\d+)", row['Name'])
if matchKnot:
crossings, alt, index = matchKnot.groups()
index = int(index)
components = 1
if alt == "a":
preference = 1
else:
preference = 2
matchMorwen = re.match("(\d+)(\^(\d+))?_(DT\[\w+\])", row['Name'])
if matchMorwen:
crossings, dum, components, index = matchMorwen.groups()
preference = 3
if not crossings:
return None
crossings = int(crossings)
if components:
components = int(components)
components = 1
degree = safeDictLookup(row, "InvariantTraceFieldDegree", 1000)
if not degree:
degree = 1000
return (components, crossings, degree, row["Tetrahedra"], index, preference)
