def MageGroupFromString(line):
"""Returns a new MageGroup, created from a string representation"""
result = MageGroup([],RecessiveOn=False)
trans = {'off':('Off',True),\
'on':('Off',False),\
'recessiveon':('RecessiveOn',True),\
'color':'Color',\
'radius':'Radius',\
'nobutton':('NoButton',True),\
'dominant':('Dominant',True),\
'lens':('Lens',True),
'master':'Master',\
'instance':'Instance',\
'clone':'Clone'}
#extract all delimited fields: label & KeyWordOptions (master, etc)
delimited_fields = []
while 1:
part = extract_delimited(line,'{','}')
if part is not None:
delimited_fields.append(part)
line = line.replace('{'+part+'}','')
else:
break
#the first one is always the label
label = delimited_fields[0]
#the later ones (starting with 1) are keyword options
field_idx = 1
#gather all left-over pieces
pieces = line.split()
if 'sub' in pieces[0]: #@(sub)group
result.Subgroup = True
result.Label = label
#process all optional pieces
for piece in pieces[1:]:
try:
#here we're finding the key. The value will be '', because it
#is stored in delimited_fields (accesible by field_idx)
key,value = piece.split('=')
setattr(result,trans[key],delimited_fields[field_idx])
field_idx += 1
except ValueError:
setattr(result,trans[piece][0],trans[piece][1])
return result
def MageListFromString(line):
"""Returns a new MageList, created from a string representation"""
result = MageList()
trans = {'off':('Off',True),\
'on':('Off',False),\
'color':'Color',\
'radius':'Radius',\
'nobutton':('NoButton',True),\
'angle':'Angle',\
'width':'Width',\
'face':'Face',\
'font':'Font',\
'size':'Size'}
line = re.sub('=\s*','=',line)
label = extract_delimited(line, '{', '}')
if label is not None:
pieces = line.replace('{'+label+'}', '').split()
else:
pieces = line.split()
style = pieces[0].strip('@')[:-4] #take off the 'list' part
if style in MageList.KnownStyles:
result.Style = style
else:
raise ValueError,"Unknown style: %s"%(style)
result.Label = label
#process all optional pieces
for piece in pieces[1:]:
try:
key,value = [item.strip() for item in piece.split('=')]
key = trans[key]
except ValueError: #unpack list of wrong size
key,value = trans[piece][0],trans[piece][1]
#KeyError will be raised in case of an unkown key
setattr(result,key,value)
return result
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