def MagePointFromString(line):
"""Constructs a new MagePoint from a one-line string."""
#handle the label if there is one: note that it might contain spaces
line = line.strip()
result = MagePoint()
label = extract_delimited(line, '{', '}')
if label:
pieces = line.replace('{'+label+'}', '').split()
else:
pieces = line.split()
fields = []
#also have to take into account the possibility of comma-delimited parts
for p in pieces:
fields.extend(filter(None, p.split(',')))
pieces = fields
result.Label = label
#get the coordinates and remove them from the list of items
result.Coordinates = map(float, pieces[-3:])
pieces = pieces[:-3]
#parse the remaining attributes in more detail
result.State = None
result.Width = None
result.Radius = None
result.Color = None
for attr in pieces:
#handle radius
if attr.startswith('r='): #radius: note case sensitivity
result.Radius = float(attr[2:])
#handle single-character attributes
elif len(attr) == 1:
result.State = attr
#handle line width
elif attr.startswith('width'):
result.Width = int(attr[5:])
else:
#otherwise assume it's a color label
result.Color = attr
return result
