def parse_fzp(self, fzp_file):
""" Parse the Fritzing component file """
tree = ElementTree(file=fzp_file)
try:
prefix = tree.find('label').text
except AttributeError:
pass
else:
self.component.add_attribute('_prefix', prefix)
symbol = Symbol()
self.component.add_symbol(symbol)
self.body = Body()
symbol.add_body(self.body)
self.cid2termid.update(self.parse_terminals(tree))
self.terminals.update(self.cid2termid.values())
layers = tree.find('views/schematicView/layers')
if layers is None:
self.image = None
else:
self.image = layers.get('image')
def parse_symbol(self, symbol):
""" Extract a symbol. """
symb = Symbol()
for body in symbol.get('bodies'):
bdy = self.parse_body(body)
symb.add_body(bdy)
return symb
def build_symbols(self, has_convert):
""" Build all Symbols and Bodies for this component. The
has_convert argument should be True if there are DeMorgan
convert bodies. """
for _ in range(2 if has_convert else 1):
symbol = Symbol()
for _ in range(self.num_units):
symbol.add_body(Body())
self.component.add_symbol(symbol)
def parse_library(self, filename, circuit):
"""
Parse the library file and add the components to the given
circuit.
"""
f = open(filename)
for line in f:
parts = line.strip().split()
prefix = parts[0]
if prefix == 'DEF':
component = Component(parts[1])
component.add_attribute('_prefix', parts[2])
symbol = Symbol()
component.add_symbol(symbol)
body = Body()
symbol.add_body(body)
elif prefix == 'A': # Arc
x, y, radius, start, end = [int(i) for i in parts[1:6]]
# convert tenths of degrees to pi radians
start = round(start / 1800.0, 1)
end = round(end / 1800.0, 1)
body.add_shape(shape.Arc(x, y, start, end, radius))
elif prefix == 'C': # Circle
x, y, radius = [int(i) for i in parts[1:4]]
body.add_shape(shape.Circle(x, y, radius))
elif prefix == 'P': # Polyline
num_points = int(parts[1])
poly = shape.Polygon()
for i in xrange(num_points):
x, y = int(parts[5 + 2 * i]), int(parts[6 + 2 * i])
poly.addPoint(x, y)
body.add_shape(poly)
elif prefix == 'S': # Rectangle
x, y, x2, y2 = [int(i) for i in parts[1:5]]
rec = shape.Rectangle(x, y, x2 - x, y2 - y)
body.add_shape(rec)
elif prefix == 'T': # Text
angle, x, y = [int(i) for i in parts[1:4]]
angle = round(angle / 1800.0, 1)
text = parts[8].replace('~', ' ')
body.add_shape(shape.Label(x, y, text, 'left', angle))
elif prefix == 'X': # Pin
num, direction = int(parts[2]), parts[6]
p2x, p2y, pinlen = int(parts[3]), int(parts[4]), int(parts[5])
if direction == 'U': # up
p1x = p2x
p1y = p2y - pinlen
elif direction == 'D': # down
p1x = p2x
p1y = p2y + pinlen
elif direction == 'L': # left
p1x = p2x - pinlen
p1y = p2y
elif direction == 'R': # right
p1x = p2x + pinlen
p1y = p2y
else:
raise ValueError('unexpected pin direction', direction)
# TODO: label?
body.add_pin(Pin(num, (p1x, p1y), (p2x, p2y)))
elif prefix == 'ENDDEF':
circuit.add_component(component.name, component)
f.close()
def parse_library(self, filename, circuit):
"""
Parse the library file and add the components to the given
circuit.
"""
f = open(filename)
for line in f:
parts = line.strip().split()
prefix = parts[0]
if prefix == "DEF":
component = Component(parts[1])
component.add_attribute("_prefix", parts[2])
symbol = Symbol()
component.add_symbol(symbol)
body = Body()
symbol.add_body(body)
elif prefix == "A": # Arc
x, y, radius, start, end = [int(i) for i in parts[1:6]]
# convert tenths of degrees to pi radians
start = round(start / 1800.0, 1)
end = round(end / 1800.0, 1)
body.add_shape(shape.Arc(x, y, start, end, radius))
elif prefix == "C": # Circle
x, y, radius = [int(i) for i in parts[1:4]]
body.add_shape(shape.Circle(x, y, radius))
elif prefix == "P": # Polyline
num_points = int(parts[1])
poly = shape.Polygon()
for i in xrange(num_points):
x, y = int(parts[5 + 2 * i]), int(parts[6 + 2 * i])
poly.addPoint(x, y)
body.add_shape(poly)
elif prefix == "S": # Rectangle
x, y, x2, y2 = [int(i) for i in parts[1:5]]
rec = shape.Rectangle(x, y, x2 - x, y2 - y)
body.add_shape(rec)
elif prefix == "T": # Text
angle, x, y = [int(i) for i in parts[1:4]]
angle = round(angle / 1800.0, 1)
text = parts[8].replace("~", " ")
body.add_shape(shape.Label(x, y, text, "left", angle))
elif prefix == "X": # Pin
num, direction = int(parts[2]), parts[6]
p2x, p2y, pinlen = int(parts[3]), int(parts[4]), int(parts[5])
if direction == "U": # up
p1x = p2x
p1y = p2y - pinlen
elif direction == "D": # down
p1x = p2x
p1y = p2y + pinlen
elif direction == "L": # left
p1x = p2x - pinlen
p1y = p2y
elif direction == "R": # right
p1x = p2x + pinlen
p1y = p2y
else:
raise ValueError("unexpected pin direction", direction)
# TODO: label?
body.add_pin(Pin(num, (p1x, p1y), (p2x, p2y)))
elif prefix == "ENDDEF":
circuit.add_component(component.name, component)
f.close()
