def test_units(self):
""" Capture absence of units. """
layout = Layout()
layout.units = None
layout.layers.append(Layer())
design = Design()
design.layout = layout
writer = Writer()
writer.write(design)
def test_images(self):
""" Capture images with no data. """
layer = Layer()
layer.images.append(Image())
layout = Layout()
layout.units = 'mm'
layout.layers.append(layer)
design = Design()
design.layout = layout
writer = Writer()
writer.write(design)
def parse(self, infile='.'):
""" Parse tokens from gerber files into a design. """
zip_ = infile.endswith('zip')
openarchive = zip_ and ZipFile or TarFile.open
archive = batch_member = None
try:
# define multiple layers from folder
if LAYERS_CFG in infile:
archive = None
cfg_name = infile
cfg = open(cfg_name, 'r')
# define multiple layers from archive
else:
archive = openarchive(infile)
batch = zip_ and archive.namelist or archive.getnames
batch_member = zip_ and archive.open or archive.extractfile
cfg_name = [n for n in batch() if LAYERS_CFG in n][0]
cfg = batch_member(cfg_name)
# define single layer from single gerber file
except ReadError:
name, ext = path.split(infile)[1].rsplit('.', 1)
layer_defs = [LayerDef(ext.lower() == 'ger' and name or ext,
'unknown',
infile)]
self._gen_layers(layer_defs, None, None)
# tidy up batch specs
else:
layer_defs = [LayerDef(rec[0],
rec[1],
path.join(path.split(cfg_name)[0], rec[2]))
for rec in
csv.reader(cfg, skipinitialspace=True)]
cfg.close()
self._gen_layers(layer_defs, archive, batch_member)
# tidy up archive
finally:
if archive:
archive.close()
# compile design
if DEBUG:
self._debug_stdout()
self.layout.units = (self.params['MO'] == 'IN' and 'inch' or 'mm')
design = Design()
design.layout = self.layout
return design
def parse(self, filename):
""" Parse an Altium file into a design """
design = Design()
f = open(filename, "w")
#TODO: Read!
f.close()
return design
def parse(self):
'''Returns a Design built up from a schematic file that represents one
sheet of the original schematic'''
tree = ViewDrawBase.parse(self)
# tree['lines'] is a [list of [list of lines]]
tree['shape'].extend(sum(tree['lines'], []))
ckt = Design()
# TODO little weak here, a copy instead?
ckt.components = self.lib
for net in tree['net']:
ckt.add_net(net)
for inst in tree['inst']:
ckt.add_component_instance(inst)
# hold on tight, this is ugly
for (netid, netpt, pinid) in inst.conns:
net = [n for n in ckt.nets if n.net_id == netid][0]
comp = ConnectedComponent(inst.instance_id, pinid)
net.ibpts[netpt - 1].add_connected_component(comp)
del inst.conns
for net in ckt.nets:
del net.ibpts
# too bad designs don't have top-level shapes (yet?)
#map(ckt.add_shape, tree['shape'])
for lbl in [s for s in tree['shapes'] if isinstance(s, Label)]:
ann = Annotation(lbl.text, lbl.x, lbl.y, lbl.rotation, True)
ckt.design_attributes.add_annotation(ann)
for k, v in tree['attr']:
ckt.design_attributes.add_attribute(k, v)
self.correct_y(ckt, tree['Dbounds'][0])
return ckt
def parse(self, inputfile):
""" Parse a gEDA file into a design.
Returns the design corresponding to the gEDA file.
"""
inputfiles = []
## check if inputfile is in ZIP format
if zipfile.is_zipfile(inputfile):
self.geda_zip = zipfile.ZipFile(inputfile)
for filename in self.geda_zip.namelist():
if filename.endswith('.sch'):
inputfiles.append(filename)
else:
inputfiles = [inputfile]
self.design = Design()
## parse frame data of first schematic to extract
## page size (assumes same frame for all files)
stream = self._open_file_or_zip(inputfiles[0])
self._check_version(stream)
for line in stream.readlines():
if 'title' in line and line.startswith('C'):
obj_type, params = self._parse_command(StringIO(line))
assert(obj_type == 'C')
params['basename'], dummy = os.path.splitext(
params['basename']
)
log.debug("using title file: %s", params['basename'])
self._parse_title_frame(params)
for filename in inputfiles:
f_in = self._open_file_or_zip(filename)
self._check_version(f_in)
self.parse_schematic(f_in)
basename, dummy = os.path.splitext(os.path.basename(filename))
self.design.design_attributes.metadata.set_name(basename)
## modify offset for next page to be shifted to the right
self.offset.x = self.offset.x - self.frame_width
f_in.close()
return self.design
def parse(self, filename):
""" Parse a kicad file into a design """
# Rough'n'dirty parsing, assume nothing useful comes before the description
circuit = Design()
segments = set() # each wire segment
junctions = set() # wire junction point (connects all wires under it)
f = open(filename)
# Read until the end of the description
line = ""
while line.strip() != "$EndDescr":
line = f.readline()
# Now parse wires and components, ignore connections, we get connectivity from wire segments
line = f.readline()
while line != '': # loop til end of file
element = line.split()[0] # whats next on the list
if element == "Wire": # Wire Segment, coords on 2nd line
line = f.readline() # Read the second line with the coordinates
x1,y1,x2,y2 = [int(i) for i in line.split()]
if not(x1 == x2 and y1 == y2): # ignore zero-length segments
segments.add(((x1,y1),(x2,y2)))
elif element == "Connection": # Store these to apply later
x,y = [int(i) for i in line.split()[2:4]]
junctions.add((x,y))
elif element == "$Comp": # Component
# TODO(ajray): probably should can by leading letter, instead of assuming they're what we expect
compnames = f.readline()
name,reference = compnames.split()[1:3]
unused_timestamp = f.readline()
positions = f.readline()
compx,compy = [int(i) for i in f.readline()[1:3]]
# TODO(ajray): ignore all the fields for now, probably could make these annotations
line = f.readline()
while line.strip() != "$EndComp":
line = f.readline()
line = f.readline()
segments = self.divide(segments,junctions)
nets = self.calc_nets(segments)
circuit.nets = nets
return circuit
def parse(self, filename, library_filename=None):
""" Parse a kicad file into a design """
design = Design()
segments = set() # each wire segment
junctions = set() # wire junction point (connects all wires under it)
if library_filename is None:
library_filename = splitext(filename)[0] + '-cache.lib'
if exists(library_filename):
for cpt in parse_library(library_filename):
design.add_component(cpt.name, cpt)
f = open(filename)
libs = []
line = f.readline().strip()
# parse the library references
while line != "$EndDescr":
if line.startswith('LIBS:'):
libs.extend(line.split(':', 1)[1].split(','))
line = f.readline().strip()
# Now parse wires and components, ignore connections, we get
# connectivity from wire segments
line = f.readline()
while line:
prefix = line.split()[0]
if line.startswith('Wire Wire Line'):
self.parse_wire(f, segments)
elif prefix == "Connection": # Store these to apply later
self.parse_connection(line, junctions)
elif prefix == "Text":
design.design_attributes.add_annotation(
self.parse_text(f, line))
elif prefix == "$Comp": # Component Instance
inst = self.parse_component_instance(f)
design.add_component_instance(inst)
if inst.library_id not in design.components.components:
cpt = lookup_part(inst.library_id, libs)
if cpt is not None:
design.components.add_component(cpt.name, cpt)
line = f.readline()
f.close()
segments = self.divide(segments, junctions)
design.nets = self.calc_nets(segments)
self.calc_connected_components(design)
return design
def __init__(self):
self.design = Design()
# This maps fritzing connector keys to (x, y) coordinates
self.points = {} # (index, connid) -> (x, y)
# This maps fritzing component indices to ComponentInstances
self.component_instances = {} # index -> ComponentInstance
# Map connector keys to the list of connector keys they
# are connected to.
self.connects = {} # (index, connid) -> [(index, connid)]
self.components = {} # idref -> ComponentParser
self.fritzing_version = None
self.fzz_zipfile = None # The ZipFile if we are parsing an fzz
def test_layers(self):
""" Capture absence of layers. """
design = Design()
design.layout = Layout()
writer = Writer()
writer.write(design)
class Fritzing(object):
""" The Fritzing Format Parser
Connection points in a fritzing file are identified by a 'module
index' which references a component instance or a wire, and a
'connector id' which references a specific pin. Together the
(index, connid) tuple uniquely identifies a connection point.
"""
def __init__(self):
self.design = Design()
# This maps fritzing connector keys to (x, y) coordinates
self.points = {} # (index, connid) -> (x, y)
# This maps fritzing component indices to ComponentInstances
self.component_instances = {} # index -> ComponentInstance
# Map connector keys to the list of connector keys they
# are connected to.
self.connects = {} # (index, connid) -> [(index, connid)]
self.components = {} # idref -> ComponentParser
self.fritzing_version = None
self.fzz_zipfile = None # The ZipFile if we are parsing an fzz
@staticmethod
def auto_detect(filename):
""" Return our confidence that the given file is an fritzing file """
f = open(filename, 'r')
data = f.read(4096)
f.close()
confidence = 0
if 'fritzingVersion' in data:
confidence += 0.9
return confidence
def parse(self, filename):
""" Parse a Fritzing file into a design """
tree = self.make_tree(filename)
self.fritzing_version = tree.getroot().get('fritzingVersion', '0')
for element in tree.findall('instances/instance'):
self.parse_instance(element)
for idref, cpt_parser in self.components.iteritems():
self.design.add_component(idref, cpt_parser.component)
for cptinst in self.component_instances.itervalues():
self.design.add_component_instance(cptinst)
for net in self.build_nets():
self.design.add_net(net)
return self.design
def make_tree(self, filename):
"""
Return an ElementTree for the given file name.
"""
if filename.endswith('.fzz'):
self.fzz_zipfile = zipfile.ZipFile(filename)
fz_file = self.fzz_zipfile.open(basename(filename[:-1]))
else:
fz_file = filename
return ElementTree(file=fz_file)
def parse_instance(self, instance):
""" Parse a Fritzing instance block """
if instance.get('moduleIdRef') == 'WireModuleID':
self.parse_wire(instance)
else:
self.parse_component_instance(instance)
def parse_wire(self, inst):
""" Parse a Fritzing wire instance """
view = inst.find('views/schematicView')
if view is None:
return
index = inst.get('modelIndex')
geom = view.find('geometry')
origin_x, origin_y = get_x(geom), get_y(geom)
conn_keys = []
for connect in view.findall('connectors/connector/connects/connect'):
if connect.get('layer') == 'breadboardbreadboard':
return
for i, connector in enumerate(view.findall('connectors/connector'), 1):
cid = connector.get('connectorId')
self.points[index, cid] = (origin_x + get_x(geom, 'x%d' % i),
origin_y + get_y(geom, 'y%d' % i))
conn_keys.append((index, cid))
self.connects[index, cid] = \
[(c.get('modelIndex'), c.get('connectorId'))
for c in connector.findall('connects/connect')]
# connect wire ends to each other
if len(conn_keys) >= 2:
self.connects[conn_keys[0]].append(conn_keys[1])
self.connects[conn_keys[1]].append(conn_keys[0])
def ensure_component(self, inst):
""" If we have not already done so, create the Component the
given Fritzing instance is an instance of. Return the
Component, or None if we cannot load it"""
idref = inst.get('moduleIdRef')
if idref in self.components:
return self.components[idref]
fzp_path = inst.get('path')
if not fzp_path:
return None
if exists(fzp_path):
fzp_file = fzp_path
else:
fzp_file = self.lookup_fzz_file(fzp_path, 'part')
if not fzp_file:
fzp_file = lookup_part(fzp_path, self.fritzing_version)
if fzp_file is not None:
fzp_path = fzp_file
if not fzp_file:
return None
parser = ComponentParser(idref)
parser.parse_fzp(fzp_file)
if parser.image is not None:
svg_file = self.lookup_fzz_file(parser.image, 'svg.schematic')
if svg_file is None:
fzp_dir = dirname(fzp_path)
parts_dir = dirname(fzp_dir)
svg_path = join(parts_dir, 'svg', basename(fzp_dir),
parser.image)
if exists(svg_path):
svg_file = svg_path
if svg_file is not None:
parser.parse_svg(svg_file)
self.components[idref] = parser
return parser
def lookup_fzz_file(self, path, prefix):
""" Find a file in our fzz archive, if any """
if not self.fzz_zipfile:
return None
fzz_name = prefix + '.' + basename(path)
try:
self.fzz_zipfile.getinfo(fzz_name)
except KeyError:
return None
else:
return self.fzz_zipfile.open(fzz_name)
def parse_component_instance(self, inst):
""" Parse a Fritzing non-wire instance into a ComponentInstance """
view = inst.find('views/schematicView')
if view is None:
return
if view.get('layer') == 'breadboardbreadboard':
return
cpt = self.ensure_component(inst)
if cpt is None:
return
index = inst.get('modelIndex')
idref = inst.get('moduleIdRef')
title = inst.find('title').text
geom = view.find('geometry')
xform = geom.find('transform')
x, y = float(geom.get('x', 0)), float(geom.get('y', 0))
if xform is None:
rotation = 0.0
else:
matrix = tuple(int(float(xform.get(key, 0)))
for key in ('m11', 'm12', 'm21', 'm22'))
x, y = rotate_component(cpt, matrix, x, y)
rotation = MATRIX2ROTATION.get(matrix, 0.0)
compinst = ComponentInstance(title, idref, 0)
compinst.add_symbol_attribute(
SymbolAttribute(make_x(x), make_y(y), rotation))
self.component_instances[index] = compinst
def build_nets(self):
""" Build the nets from the connects, points, and instances """
todo = set(self.connects) # set([(index, cid)])
points = {} # (x, y) -> NetPoint
nets = []
def get_point(point):
""" Return a new or existing NetPoint for an (x,y) point """
if point not in points:
points[point] = NetPoint('%da%d' % point, point[0], point[1])
return points[point]
def update_net(net, main_key):
""" Update a net with a new set of connects """
todo.discard(main_key)
main_point = get_point(self.points[main_key])
net.add_point(main_point)
remaining = []
for conn_key in self.connects[main_key]:
if conn_key in todo:
remaining.append(conn_key)
if conn_key in self.points:
connect(net, main_point, get_point(self.points[conn_key]))
elif conn_key[0] in self.component_instances:
inst = self.component_instances[conn_key[0]]
cpt_parser = self.components[inst.library_id]
cpt_parser.connect_point(conn_key[1], inst, main_point)
return remaining
while todo:
net = Net(str(len(nets)))
nets.append(net)
remaining = [todo.pop()]
while remaining:
remaining.extend(update_net(net, remaining.pop(0)))
return nets
def parse(self, filename, library_filename=None):
""" Parse a kicad file into a design """
# Rough'n'dirty parsing, assume nothing useful comes before
# the description
circuit = Design()
segments = set() # each wire segment
junctions = set() # wire junction point (connects all wires under it)
if library_filename is None:
library_filename = splitext(filename)[0] + '-cache.lib'
if exists(library_filename):
self.parse_library(library_filename, circuit)
f = open(filename)
# Read until the end of the description
while f.readline().strip() != "$EndDescr":
pass
# Now parse wires and components, ignore connections, we get
# connectivity from wire segments
line = f.readline()
while line:
element = line.split()[0] # whats next on the list
if element == "Wire": # Wire Segment, coords on 2nd line
x1, y1, x2, y2 = [int(i) for i in f.readline().split()]
if not (x1 == x2 and y1 == y2): # ignore zero-length segments
segments.add(((x1, y1), (x2, y2)))
elif element == "Connection": # Store these to apply later
x, y = [int(i) for i in line.split()[2:4]]
junctions.add((x, y))
elif element == "$Comp": # Component Instance
# name & reference
prefix, name, reference = f.readline().split()
assert prefix == 'L'
# timestamp
prefix, _ = f.readline().split(None, 1)
assert prefix == 'U'
# position
prefix, compx, compy = f.readline().split()
assert prefix == 'P'
compx, compy = int(compx), int(compy)
# TODO(ajray): ignore all the fields for now, probably
# could make these annotations
while f.readline().strip() not in ("$EndComp", ''):
pass
# TODO: calculate rotation
inst = ComponentInstance(reference, name, 0)
inst.add_symbol_attribute(SymbolAttribute(compx, compy, 0))
circuit.add_component_instance(inst)
line = f.readline()
f.close()
segments = self.divide(segments, junctions)
circuit.nets = self.calc_nets(segments)
return circuit
def setUp(self):
""" Setup the test case. """
self.des = Design()
class DesignTests(unittest.TestCase):
""" The tests of the core module design feature """
def setUp(self):
""" Setup the test case. """
self.des = Design()
def tearDown(self):
""" Teardown the test case. """
pass
def test_create_new_design(self):
""" Test the creation of a new empty design. """
self.assertEqual(len(self.des.nets), 0)
def test_empty_bounds(self):
'''bounds() on an empty design is to include just the origin'''
for point in self.des.bounds():
self.assertEqual(point.x, 0)
self.assertEqual(point.y, 0)
def test_bounds_nets(self):
'''Test bounds() with just the design's nets'''
leftnet = Net('foo1')
topnet = Net('foo2')
rightnet = Net('foo3')
botnet = Net('foo4')
# limits minx=2, miny=1, maxx=7, maxy=9
mkbounds(leftnet, 2, 3, 3, 3)
mkbounds(topnet, 3, 1, 3, 3)
mkbounds(rightnet, 3, 3, 7, 3)
mkbounds(botnet, 3, 3, 3, 9)
self.des.add_net(topnet)
self.des.add_net(rightnet)
self.des.add_net(leftnet)
self.des.add_net(botnet)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, 2)
self.assertEqual(top_left.y, 1)
self.assertEqual(btm_right.x, 7)
self.assertEqual(btm_right.y, 9)
def test_bounds_annots(self):
'''Test bounds() with just Annotations added as design attributes'''
left = Annotation('foo1', 3, 3, 0, True)
top = Annotation('foo2', 3, 3, 0, True)
right = Annotation('foo3', 3, 3, 0, True)
bot = Annotation('foo4', 3, 3, 0, True)
mkbounds(left, 2, 3, 3, 3)
mkbounds(top, 3, 2, 3, 3)
mkbounds(right, 3, 3, 5, 3)
mkbounds(bot, 3, 3, 3, 6)
for anno in (left, right, bot, top):
self.des.design_attributes.add_annotation(anno)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, 2)
self.assertEqual(top_left.y, 2)
self.assertEqual(btm_right.x, 5)
self.assertEqual(btm_right.y, 6)
def test_bounds_parts(self):
'''test bounds() with just components in the design'''
libcomp = Component('bar')
libcomp.add_symbol(Symbol())
libcomp.symbols[0].add_body(Body())
mkbounds(libcomp.symbols[0].bodies[0], 0, 0, 10, 10)
self.des.add_component('foo', libcomp)
for (x, y) in ((1, 3), (3, 2), (5, 3), (3, 7)):
compinst = ComponentInstance(str((x, y)), 'foo', 0)
compinst.add_symbol_attribute(SymbolAttribute(x, y, 0))
self.des.add_component_instance(compinst)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, 1)
self.assertEqual(top_left.y, 2)
self.assertEqual(btm_right.x, 15)
self.assertEqual(btm_right.y, 17)
def test_bounds_neg_coords(self):
'''Test bounds() when the schematic is all negative coordinates'''
net = Net('foo')
mkbounds(net, -1, -2, -3, -4)
self.des.add_net(net)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, -3)
self.assertEqual(top_left.y, -4)
self.assertEqual(btm_right.x, -1)
self.assertEqual(btm_right.y, -2)
def test_bounds_all_elts(self):
'''bounds() with all the elements competing'''
net = Net('foo')
mkbounds(net, 3, 3, -1, -2)
self.des.add_net(net)
annot = Annotation('foo', 3, 3, 0, True)
mkbounds(annot, 3, 3, 3, 5)
self.des.design_attributes.add_annotation(annot)
libcomp = Component('bar')
libcomp.add_symbol(Symbol())
libcomp.symbols[0].add_body(Body())
mkbounds(libcomp.symbols[0].bodies[0], 0, 0, 3, 3)
self.des.add_component('foo', libcomp)
compinst = ComponentInstance('bar', 'foo', 0)
compinst.add_symbol_attribute(SymbolAttribute(3, 0, 0))
self.des.add_component_instance(compinst)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, -1)
self.assertEqual(top_left.y, -2)
self.assertEqual(btm_right.x, 6)
self.assertEqual(btm_right.y, 5)
def parse_schematic(self, stream):
""" Parse a gEDA schematic provided as a *stream* object into a
design.
Returns the design corresponding to the schematic.
"""
# pylint: disable=R0912
if self.design is None:
self.design = Design()
self.segments = set()
self.net_points = dict()
self.net_names = dict()
obj_type, params = self._parse_command(stream)
while obj_type is not None:
if obj_type == 'T': ##Convert regular text or attribute
key, value = self._parse_text(stream, params)
if key is None: ## text is annotation
self.design.design_attributes.add_annotation(
self._create_annotation(value, params)
)
elif key == 'use_license':
self.design.design_attributes.metadata.license = value
else:
self.design.design_attributes.add_attribute(key, value)
elif obj_type == 'G' : ## picture type is not supported
log.warn("ignoring picture/font in gEDA file. Not supported!")
elif obj_type == 'C': ## command for component found
basename = params['basename']
## ignore title since it only defines the blueprint frame
if basename.startswith('title'):
self._parse_environment(stream)
## busripper are virtual components that need separate
## processing
elif 'busripper' in basename:
self.segments.add(
self._create_ripper_segment(params)
)
## make sure following environments are ignored
self.skip_embedded_section(stream)
self._parse_environment(stream)
else:
self.parse_component(stream, params)
elif obj_type == 'N': ## net segement (in schematic ONLY)
self._parse_segment(stream, params)
elif obj_type == 'H': ## SVG-like path
log.warn('ommiting path outside of component.')
## skip description of path
num_lines = params['num_lines']
for dummy in range(num_lines):
stream.readline()
elif obj_type == 'U': ## bus (only graphical feature NOT component)
self._parse_bus(params)
obj_type, params = self._parse_command(stream)
## process net segments into nets & net points and add to design
self.divide_segments()
calculated_nets = self.calculate_nets()
for cnet in calculated_nets:
self.design.add_net(cnet)
def parse(self, filename, library_filename=None):
""" Parse a kicad file into a design """
# Rough'n'dirty parsing, assume nothing useful comes before
# the description
circuit = Design()
segments = set() # each wire segment
junctions = set() # wire junction point (connects all wires under it)
if library_filename is None:
library_filename = splitext(filename)[0] + "-cache.lib"
if exists(library_filename):
self.parse_library(library_filename, circuit)
f = open(filename)
# Read until the end of the description
while f.readline().strip() != "$EndDescr":
pass
# Now parse wires and components, ignore connections, we get
# connectivity from wire segments
line = f.readline()
while line:
element = line.split()[0] # whats next on the list
if element == "Wire": # Wire Segment, coords on 2nd line
x1, y1, x2, y2 = [int(i) for i in f.readline().split()]
if not (x1 == x2 and y1 == y2): # ignore zero-length segments
segments.add(((x1, y1), (x2, y2)))
elif element == "Connection": # Store these to apply later
x, y = [int(i) for i in line.split()[2:4]]
junctions.add((x, y))
elif element == "$Comp": # Component Instance
# name & reference
prefix, name, reference = f.readline().split()
assert prefix == "L"
# timestamp
prefix, _ = f.readline().split(None, 1)
assert prefix == "U"
# position
prefix, compx, compy = f.readline().split()
assert prefix == "P"
compx, compy = int(compx), int(compy)
# TODO(ajray): ignore all the fields for now, probably
# could make these annotations
while f.readline().strip() not in ("$EndComp", ""):
pass
# TODO: calculate rotation
inst = ComponentInstance(reference, name, 0)
inst.add_symbol_attribute(SymbolAttribute(compx, compy, 0))
circuit.add_component_instance(inst)
line = f.readline()
f.close()
segments = self.divide(segments, junctions)
circuit.nets = self.calc_nets(segments)
return circuit
def __init__(self):
self.design = Design()
class JSON:
""" The Open JSON Format Parser
This is mostly for sanity checks, it reads in the Open JSON format,
and then outputs it. """
def __init__(self):
self.design = Design()
@staticmethod
def auto_detect(filename):
""" Return our confidence that the given file is an openjson file """
f = open(filename, 'r')
data = f.read()
confidence = 0
if 'component_instances' in data:
confidence += 0.3
if 'design_attributes' in data:
confidence += 0.6
return confidence
def parse(self, filename):
""" Parse the openjson file into the core. """
f = open(filename)
read = json.loads(f.read())
f.close()
self.parse_component_instances(read.get('component_instances'))
self.parse_components(read.get('components'))
self.parse_design_attributes(read.get('design_attributes'))
self.parse_nets(read.get('nets'))
self.parse_version(read.get('version'))
return self.design
def parse_version(self, version):
""" Extract the file version. """
file_version = version.get('file_version')
exporter = version.get('exporter')
self.design.set_version(file_version, exporter)
def parse_component_instances(self, component_instances):
""" Extract the component instances. """
for instance in component_instances:
# Get instance_id, library_id and symbol_index
instance_id = instance.get('instance_id')
library_id = instance.get('library_id')
symbol_index = int(instance.get('symbol_index'))
# Make the ComponentInstance()
inst = ComponentInstance(instance_id, library_id, symbol_index)
# Get the SymbolAttributes
for symbol_attribute in instance.get('symbol_attributes'):
attr = self.parse_symbol_attribute(symbol_attribute)
inst.add_symbol_attribute(attr)
# Get the Attributes
for key, value in instance.get('attributes').items():
inst.add_attribute(key, value)
# Add the ComponentInstance
self.design.add_component_instance(inst)
def parse_symbol_attribute(self, symbol_attribute):
""" Extract attributes from a symbol. """
x = int(symbol_attribute.get('x'))
y = int(symbol_attribute.get('y'))
rotation = float(symbol_attribute.get('rotation'))
# Make SymbolAttribute
symbol_attr = SymbolAttribute(x, y, rotation)
# Add Annotations
for annotation in symbol_attribute.get('annotations'):
anno = self.parse_annotation(annotation)
symbol_attr.add_annotation(anno)
# Return SymbolAttribute to be added to it's ComponentInstance
return symbol_attr
def parse_annotation(self, annotation):
""" Extract an annotation. """
value = annotation.get('value')
x = int(annotation.get('x'))
y = int(annotation.get('y'))
rotation = float(annotation.get('rotation'))
visible = annotation.get('visible')
if visible is not None and visible.lower() == 'false':
visible = 'false'
else:
visible = 'true'
return Annotation(value, x, y, rotation, visible)
def parse_components(self, components):
""" Extract a component library. """
for library_id, component in components.items():
name = component.get('name')
comp = Component(name)
# Get attributes
for key, value in component.get('attributes').items():
comp.add_attribute(key, value)
for symbol in component.get('symbols'):
symb = self.parse_symbol(symbol)
comp.add_symbol(symb)
self.design.add_component(library_id, comp)
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 parse_body(self, body):
""" Extract a body of a symbol. """
bdy = Body()
for pin in body.get('pins'):
parsed_pin = self.parse_pin(pin)
bdy.add_pin(parsed_pin)
for shape in body.get('shapes'):
parsed_shape = self.parse_shape(shape)
bdy.add_shape(parsed_shape)
return bdy
def parse_pin(self, pin):
""" Extract a pin of a body. """
pin_number = pin.get('pin_number')
p1 = self.parse_point(pin.get('p1'))
p2 = self.parse_point(pin.get('p2'))
if pin.get('label') is not None:
pin_label = self.parse_label(pin.get('label'))
return Pin(pin_number, p1, p2, pin_label)
return Pin(pin_number, p1, p2)
def parse_point(self, point):
""" Extract a point. """
x = int(point.get('x'))
y = int(point.get('y'))
return Point(x, y)
def parse_label(self, label):
""" Extract a label. """
x = int(label.get('x'))
y = int(label.get('y'))
text = label.get('text')
align = label.get('align')
rotation = float(label.get('rotation'))
return Label(x, y, text, align, rotation)
def parse_shape(self, shape):
""" Extract a shape. """
# pylint: disable=R0914
# pylint: disable=R0911
typ = shape.get('type')
if 'rectangle' == typ:
x = int(shape.get('x'))
y = int(shape.get('y'))
height = int(shape.get('height'))
width = int(shape.get('width'))
return Rectangle(x, y, width, height)
elif 'rounded_rectangle' == typ:
x = int(shape.get('x'))
y = int(shape.get('y'))
height = int(shape.get('height'))
width = int(shape.get('width'))
radius = int(shape.get('radius'))
return RoundedRectangle(x, y, width, height, radius)
elif 'arc' == typ:
x = int(shape.get('x'))
y = int(shape.get('y'))
start_angle = float(shape.get('start_angle'))
end_angle = float(shape.get('end_angle'))
radius = int(shape.get('radius'))
return Arc(x, y, start_angle, end_angle, radius)
elif 'circle' == typ:
x = int(shape.get('x'))
y = int(shape.get('y'))
radius = int(shape.get('radius'))
return Circle(x, y, radius)
elif 'label' == typ:
x = int(shape.get('x'))
y = int(shape.get('y'))
rotation = float(shape.get('rotation'))
text = shape.get('text')
align = shape.get('align')
return Label(x, y, text, align, rotation)
elif 'line' == typ:
p1 = self.parse_point(shape.get('p1'))
p2 = self.parse_point(shape.get('p2'))
return Line(p1, p2)
elif 'polygon' == typ:
poly = Polygon()
for point in shape.get('points'):
poly.add_point(self.parse_point(point))
return poly
elif 'bezier' == typ:
control1 = self.parse_point(shape.get('control1'))
control2 = self.parse_point(shape.get('control2'))
p1 = self.parse_point(shape.get('p1'))
p2 = self.parse_point(shape.get('p2'))
return BezierCurve(control1, control2, p1, p2)
def parse_design_attributes(self, design_attributes):
""" Extract design attributes. """
attrs = DesignAttributes()
# Get the Annotations
for annotation in design_attributes.get('annotations'):
anno = self.parse_annotation(annotation)
attrs.add_annotation(anno)
# Get the Attributes
for key, value in design_attributes.get('attributes').items():
attrs.add_attribute(key, value)
# Get the Metadata
meta = self.parse_metadata(design_attributes.get('metadata'))
attrs.set_metadata(meta)
self.design.set_design_attributes(attrs)
def parse_metadata(self, metadata):
""" Extract design meta-data. """
meta = Metadata()
meta.set_name(metadata.get('name'))
meta.set_license(metadata.get('license'))
meta.set_owner(metadata.get('owner'))
meta.set_updated_timestamp(metadata.get('updated_timestamp'))
meta.set_design_id(metadata.get('design_id'))
meta.set_description(metadata.get('description'))
meta.set_slug(metadata.get('slug'))
for attached_url in metadata.get('attached_urls'):
meta.add_attached_url(attached_url)
return meta
def parse_nets(self, nets):
""" Extract nets. """
for net in nets:
net_id = net.get('net_id')
ret_net = Net(net_id)
# Add Annotations
for annotation in net.get('annotations'):
anno = self.parse_annotation(annotation)
ret_net.add_annotation(anno)
# Get the Attributes
for key, value in net.get('attributes').items():
ret_net.add_attribute(key, value)
# Get the Points
for net_point in net.get('points'):
npnt = self.parse_net_point(net_point)
ret_net.add_point(npnt)
self.design.add_net(ret_net)
def parse_net_point(self, net_point):
""" Extract a net point. """
point_id = net_point.get('point_id')
x = int(net_point.get('x'))
y = int(net_point.get('y'))
npnt = NetPoint(point_id, x, y)
# Get the connected points
for point in net_point.get('connected_points'):
npnt.add_connected_point(point)
# Get the ConnectedComponents
for connectedcomponent in net_point.get('connected_components'):
conn_comp = self.parse_connected_component(connectedcomponent)
npnt.add_connected_component(conn_comp)
return npnt
def parse_connected_component(self, connectedcomponent):
""" Extract a connected component. """
instance_id = connectedcomponent.get('instance_id')
pin_number = connectedcomponent.get('pin_number')
return ConnectedComponent(instance_id, pin_number)
class GEDA:
""" The GEDA Format Parser """
DELIMITER = ' '
SCALE_FACTOR = 10.0 #maps 1000 MILS to 10 pixels
OBJECT_TYPES = {
'v': ( # gEDA version
('version', int, None),
('fileformat_version', int, None),
),
'C': ( #component
('x', int, None),
('y', int, None),
('selectable', int, None),
('angle', int, None),
('mirror', int, None),
('basename', str, None),
),
'N': ( # net segment
('x1', int, None),
('y1', int, None),
('x2', int, None),
('y2', int, None),
),
'U': ( # bus (only graphical aid, not a component)
('x1', int, None),
('y1', int, None),
('x2', int, None),
('y2', int, None),
('color', int, None),
('ripperdir', int, None),
),
'T': ( # text or attribute (context)
('x', int, None),
('y', int, None),
('color', int, None),
('size', int, None),
('visibility', int, None),
('show_name_value', int, None),
('angle', int, None),
('alignment', int, None),
('num_lines', int, 1),
),
'P': ( # pin (in sym)
('x1', int, None),
('y1', int, None),
('x2', int, None),
('y2', int, None),
('color', int, None),
('pintype', int, None),
('whichend', int, None),
),
'L': ( # line
('x1', int, None),
('y1', int, None),
('x2', int, None),
('y2', int, None),
),
'B': ( # box
('x', int, None),
('y', int, None),
('width', int, None),
('height', int, None),
),
'V': ( # circle
('x', int, None),
('y', int, None),
('radius', int, None),
),
'A': ( # arc
('x', int, None),
('y', int, None),
('radius', int, None),
('startangle', int, None),
('sweepangle', int, None),
),
'H': ( # SVG-like path
('color', int, None),
('width', int, None),
('capstyle', int, None),
('dashstyle', int, None),
('dashlength', int, None),
('dashspace', int, None),
('filltype', int, None),
('fillwidth', int, None),
('angle1', int, None),
('pitch1', int, None),
('angle2', int, None),
('pitch2', int, None),
('num_lines', int, None),
),
## environments
'{': [],
'}': [], # attributes
'[': [],
']': [], # embedded component
## valid types but are ignored
'G': [], #picture
}
def __init__(self, symbol_dirs=None):
""" Constuct a gEDA parser object. Specifying a list of symbol
directories in *symbol_dir* will provide a symbol file
lookup in the specified directories. The lookup will be
generated instantly examining each directory (if it exists).
Kwargs:
symbol_dirs (list): List of directories containing .sym
files
"""
self.offset = shape.Point(40000, 40000)
## Initialise frame size with largest possible size
self.frame_width = 0
self.frame_height = 0
## add flag to allow for auto inclusion
if symbol_dirs is None:
symbol_dirs = []
symbol_dirs += [
'library/geda',
]
self.instance_counter = itertools.count()
self.known_symbols = {}
self.design = None
self.segments = None
self.net_points = None
self.net_names = None
self.known_symbols = find_symbols(symbol_dirs)
self.geda_zip = None
@staticmethod
def auto_detect(filename):
""" Return our confidence that the given file is an geda schematic """
f = open(filename, 'rU')
data = f.read()
confidence = 0
if data[0:2] == 'v ':
confidence += 0.51
if 'package=' in data:
confidence += 0.25
if 'footprint=' in data:
confidence += 0.25
if 'refdes=' in data:
confidence += 0.25
if 'netname=' in data:
confidence += 0.25
return confidence
def set_offset(self, point):
""" Set the offset point for the gEDA output. As OpenJSON
positions the origin in the center of the viewport and
gEDA usually uses (40'000, 40'000) as page origin, this
allows for translating from one coordinate system to
another. It expects a *point* object providing a *x* and
*y* attribute.
"""
## create an offset of 5 grid squares from origin (0,0)
self.offset.x = point.x
self.offset.y = point.y
def parse(self, inputfile):
""" Parse a gEDA file into a design.
Returns the design corresponding to the gEDA file.
"""
inputfiles = []
## check if inputfile is in ZIP format
if zipfile.is_zipfile(inputfile):
self.geda_zip = zipfile.ZipFile(inputfile)
for filename in self.geda_zip.namelist():
if filename.endswith('.sch'):
inputfiles.append(filename)
else:
inputfiles = [inputfile]
self.design = Design()
## parse frame data of first schematic to extract
## page size (assumes same frame for all files)
stream = self._open_file_or_zip(inputfiles[0])
self._check_version(stream)
for line in stream.readlines():
if 'title' in line and line.startswith('C'):
obj_type, params = self._parse_command(StringIO(line))
assert(obj_type == 'C')
params['basename'], dummy = os.path.splitext(
params['basename']
)
log.debug("using title file: %s", params['basename'])
self._parse_title_frame(params)
for filename in inputfiles:
f_in = self._open_file_or_zip(filename)
self._check_version(f_in)
self.parse_schematic(f_in)
basename, dummy = os.path.splitext(os.path.basename(filename))
self.design.design_attributes.metadata.set_name(basename)
## modify offset for next page to be shifted to the right
self.offset.x = self.offset.x - self.frame_width
f_in.close()
return self.design
def parse_schematic(self, stream):
""" Parse a gEDA schematic provided as a *stream* object into a
design.
Returns the design corresponding to the schematic.
"""
# pylint: disable=R0912
if self.design is None:
self.design = Design()
self.segments = set()
self.net_points = dict()
self.net_names = dict()
obj_type, params = self._parse_command(stream)
while obj_type is not None:
if obj_type == 'T': ##Convert regular text or attribute
key, value = self._parse_text(stream, params)
if key is None: ## text is annotation
self.design.design_attributes.add_annotation(
self._create_annotation(value, params)
)
elif key == 'use_license':
self.design.design_attributes.metadata.license = value
else:
self.design.design_attributes.add_attribute(key, value)
elif obj_type == 'G' : ## picture type is not supported
log.warn("ignoring picture/font in gEDA file. Not supported!")
elif obj_type == 'C': ## command for component found
basename = params['basename']
## ignore title since it only defines the blueprint frame
if basename.startswith('title'):
self._parse_environment(stream)
## busripper are virtual components that need separate
## processing
elif 'busripper' in basename:
self.segments.add(
self._create_ripper_segment(params)
)
## make sure following environments are ignored
self.skip_embedded_section(stream)
self._parse_environment(stream)
else:
self.parse_component(stream, params)
elif obj_type == 'N': ## net segement (in schematic ONLY)
self._parse_segment(stream, params)
elif obj_type == 'H': ## SVG-like path
log.warn('ommiting path outside of component.')
## skip description of path
num_lines = params['num_lines']
for dummy in range(num_lines):
stream.readline()
elif obj_type == 'U': ## bus (only graphical feature NOT component)
self._parse_bus(params)
obj_type, params = self._parse_command(stream)
## process net segments into nets & net points and add to design
self.divide_segments()
calculated_nets = self.calculate_nets()
for cnet in calculated_nets:
self.design.add_net(cnet)
def _parse_title_frame(self, params):
""" Parse the frame component in *params* to extract the
page size to be used in the design. The offset is adjusted
according to the bottom-left position of the frame.
"""
## set offset based on bottom-left corner of frame
self.offset.x = params['x']
self.offset.y = params['y']
filename = self.known_symbols.get(params['basename'])
if not filename or not os.path.exists(filename):
log.warn("could not find title symbol '%s'" % params['basename'])
self.frame_width = 46800
self.frame_height = 34000
return
stream = open(filename, 'rU')
obj_type, params = self._parse_command(stream)
while obj_type is not None:
if obj_type == 'B':
if params['width'] > self.frame_width:
self.frame_width = params['width']
if params['height'] > self.frame_height:
self.frame_height = params['height']
## skip commands covering multiple lines
elif obj_type in ['T', 'H']:
for dummy in range(params['num_lines']):
stream.readline()
obj_type, params = self._parse_command(stream)
## set width to estimated max value when no box was found
if self.frame_width == 0:
self.frame_width = 46800
## set height to estimated max value when no box was found
if self.frame_height == 0:
self.frame_height = 34000
stream.close()
def _create_ripper_segment(self, params):
""" Creates a new segement from the busripper provided
in gEDA. The busripper is a graphical feature that
provides a nicer look for a part of a net. The bus
rippers are turned into net segments according to the
length and orientation in *params*.
Returns a tuple of two NetPoint objects for the segment.
"""
x, y = params['x'], params['y']
angle, mirror = params['angle'], params['mirror']
if mirror:
angle = (angle + 90) % 360
x, y = self.conv_coords(x, y)
pt_a = self.get_netpoint(x, y)
ripper_size = self.to_px(200)
## create second point for busripper segment on bus
if angle == 0:
pt_b = self.get_netpoint(pt_a.x+ripper_size, pt_a.y+ripper_size)
elif angle == 90:
pt_b = self.get_netpoint(pt_a.x-ripper_size, pt_a.y+ripper_size)
elif angle == 180:
pt_b = self.get_netpoint(pt_a.x-ripper_size, pt_a.y-ripper_size)
elif angle == 270:
pt_b = self.get_netpoint(pt_a.x+ripper_size, pt_a.y-ripper_size)
else:
raise GEDAError(
"invalid angle in component '%s'" % params['basename']
)
return pt_a, pt_b
def parse_component(self, stream, params):
""" Creates a component instance according to the component *params*.
If the component is not known in the library, a the component
will be created according to its description in the embedded
environment ``[]`` or a symbol file. The component is added
to the library automatically if necessary.
An instance of this component will be created and added to
the design.
A GEDAError is raised when either the component file
is invalid or the referenced symbol file cannot be found
in the known directories.
Returns a tuple of Component and ComponentInstance objects.
"""
basename, dummy = os.path.splitext(params['basename'])
component_name = basename
if params['mirror']:
component_name += '_MIRRORED'
if component_name in self.design.components.components:
component = self.design.components.components[component_name]
## skipping embedded data might be required
self.skip_embedded_section(stream)
else:
##check if sym file is embedded or referenced
if basename.startswith('EMBEDDED'):
## embedded only has to be processed when NOT in symbol lookup
if basename not in self.known_symbols:
component = self.parse_component_data(stream, params)
else:
if basename not in self.known_symbols:
log.warn("referenced symbol file '%s' unknown" % basename)
## parse optional attached environment before continuing
self._parse_environment(stream)
return None, None
## requires parsing of referenced symbol file
f_in = open(self.known_symbols[basename], "rU")
self._check_version(f_in)
component = self.parse_component_data(f_in, params)
f_in.close()
self.design.add_component(component_name, component)
## get all attributes assigned to component instance
attributes = self._parse_environment(stream)
## refdes attribute is name of component (mandatory as of gEDA doc)
## examples if gaf repo have components without refdes, use part of
## basename
if attributes is not None:
instance = ComponentInstance(
attributes.get('_refdes', component.name),
component.name,
0
)
for key, value in attributes.items():
instance.add_attribute(key, value)
else:
instance = ComponentInstance(
component.name,
component.name,
0
)
## generate a component instance using attributes
self.design.add_component_instance(instance)
symbol = SymbolAttribute(
self.x_to_px(params['x']),
self.y_to_px(params['y']),
self.conv_angle(params['angle'])
)
instance.add_symbol_attribute(symbol)
## add annotation for special attributes
for idx, attribute_key in enumerate(['_refdes', 'device']):
if attribute_key in component.attributes \
or attribute_key in instance.attributes:
symbol.add_annotation(
Annotation(
'{{%s}}' % attribute_key,
0, 0+idx*10, 0.0, 'true'
)
)
return component, instance
def _check_version(self, stream):
""" Check next line in *stream* for gEDA version data
starting with ``v``. Raises ``GEDAError`` when no version
data can be found.
"""
typ, dummy = self._parse_command(stream)
if typ != 'v':
raise GEDAError(
"cannot convert file, not in gEDA format"
)
return True
def parse_component_data(self, stream, params):
""" Creates a component from the component *params* and the
following commands in the stream. If the component data
is embedded in the schematic file, all coordinates will
be translated into the origin first.
Only a single symbol/body is created for each component
since gEDA symbols contain exactly one description.
Returns the newly created Component object.
"""
# pylint: disable=R0912
basename = os.path.splitext(params['basename'])[0]
saved_offset = self.offset
self.offset = shape.Point(0, 0)
## retrieve if component is mirrored around Y-axis
mirrored = bool(params.get('mirror', False))
if mirrored:
basename += '_MIRRORED'
move_to = None
if basename.startswith('EMBEDDED'):
move_to = (params['x'], params['y'])
## grab next line (should be '['
typ, params = self._parse_command(stream, move_to)
if typ == '[':
typ, params = self._parse_command(stream, move_to)
component = components.Component(basename)
symbol = components.Symbol()
component.add_symbol(symbol)
body = components.Body()
symbol.add_body(body)
##NOTE: adding this attribute to make parsing UPV data easier
## when using re-exported UPV.
component.add_attribute('_geda_imported', 'true')
while typ is not None:
if typ == 'T':
key, value = self._parse_text(stream, params)
if key is None:
body.add_shape(
self._create_label(value, params, mirrored)
)
elif key == '_refdes' and '?' in value:
prefix, suffix = value.split('?')
component.add_attribute('_prefix', prefix)
component.add_attribute('_suffix', suffix)
else:
#assert(key not in ['_refdes', 'refdes'])
component.add_attribute(key, value)
elif typ == 'L':
body.add_shape(
self._parse_line(params, mirrored)
)
elif typ == 'B':
body.add_shape(
self._parse_box(params, mirrored)
)
elif typ == 'V':
body.add_shape(
self._parse_circle(params, mirrored)
)
elif typ == 'A':
body.add_shape(
self._parse_arc(params, mirrored)
)
elif typ == 'P':
body.add_pin(
self._parse_pin(stream, params, mirrored)
)
elif typ == 'H':
for new_shape in self._parse_path(stream, params, mirrored):
body.add_shape(new_shape)
elif typ == 'G':
log.warn("ignoring picture/font in gEDA file. Not supported!")
else:
pass
typ, params = self._parse_command(stream, move_to)
self.offset = saved_offset
return component
def divide_segments(self):
""" Checks all net segments for intersecting points of
all other net segments. If an intersection is detected
the net segment is divided into two segments with the
intersecting point. This method has been adapted from
a similar method in the kiCAD parser.
"""
## check if segments need to be divided
add_segs = set()
rem_segs = set()
for segment in self.segments:
for point in self.net_points.values():
if self.intersects_segment(segment, point):
pt_a, pt_b = segment
rem_segs.add(segment)
add_segs.add((pt_a, point))
add_segs.add((point, pt_b))
self.segments -= rem_segs
self.segments |= add_segs
def _parse_text(self, stream, params):
""" Parses text element and determins if text is a text object
or an attribute.
Returns a tuple (key, value). If text is an annotation key is None.
"""
num_lines = params['num_lines']
text = []
for dummy in range(int(num_lines)):
text.append(stream.readline())
text_str = ''.join(text).strip()
## escape special parameter sequence '\_'
text_str = text_str.replace("\_", '')
if num_lines == 1 and '=' in text_str:
return self._parse_attribute(text_str, params['visibility'])
## text can have environemnt attached: parse & ignore
dummy = self._parse_environment(stream)
return None, text_str
def _create_annotation(self, text, params):
""" Creates an Annotation object from *text* using position,
rotation and visibility from *params*.
Returns an Annotation object.
"""
return Annotation(
text,
self.x_to_px(params['x']),
self.y_to_px(params['y']),
self.conv_angle(params['angle']),
self.conv_bool(params['visibility']),
)
def _create_label(self, text, params, mirrored=False):
""" Create a ``shape.Label`` instance using the *text* string. The
location of the Label is determined by the ``x`` and ``y``
coordinates in *params*. If *mirrored* is true, the bottom left
corner of the text (anchor) is mirrored at the Y-axis.
Returns a ``shape.Label`` object
"""
text_x = params['x']
if mirrored:
text_x = 0 - text_x
return shape.Label(
self.x_to_px(text_x),
self.y_to_px(params['y']),
text,
'left',
self.conv_angle(params['angle']),
)
@staticmethod
def _parse_attribute(text, visibility):
""" Creates a tuple of (key, value) from the attribute text.
If visibility is '0' the attribute key is prefixed with '_'
to make it a hidden attribute.
Returns a tuple of key and value.
"""
key, value = text.split('=', 1)
## prefix attributes that are marked as invisible
if visibility == 0:
key = "_"+key
## these are special attributes that are treated differently
elif key in ['netname', 'pinnumber', 'pinlabel', 'refdes']:
key = "_"+key
return key.strip(), value.strip()
def skip_embedded_section(self, stream):
""" Reads the *stream* line by line until the end of an
embedded section (``]``) is found. This method is used
to skip over embedded sections of already known
components.
"""
pos = stream.tell()
typ = stream.readline().split(self.DELIMITER, 1)[0].strip()
## return with stream reset to previous position if not
## an embedded section
if typ != '[':
stream.seek(pos)
return
while typ != ']':
typ = stream.readline().split(self.DELIMITER, 1)[0].strip()
def get_netpoint(self, x, y):
""" Creates a new NetPoint at coordinates *x*,*y* and stores
it in the net point lookup table. If a NetPoint does already
exist, the existing point is returned.
Returns a NetPoint object at coordinates *x*,*y*
"""
if (x, y) not in self.net_points:
self.net_points[(x, y)] = net.NetPoint('%da%d' % (x, y), x, y)
return self.net_points[(x, y)]
@staticmethod
def intersects_segment(segment, pt_c):
""" Checks if point *pt_c* lays on the *segment*. This code is
adapted from the kiCAD parser.
Returns True if *pt_c* is on *segment*, False otherwise.
"""
pt_a, pt_b = segment
#check vertical segment
if pt_a.x == pt_b.x == pt_c.x:
if min(pt_a.y, pt_b.y) < pt_c.y < max(pt_a.y, pt_b.y):
return True
#check vertical segment
elif pt_a.y == pt_b.y == pt_c.y:
if min(pt_a.x, pt_b.x) < pt_c.x < max(pt_a.x, pt_b.x):
return True
#check diagonal segment
elif (pt_c.x-pt_a.x)*(pt_b.y-pt_a.y) == (pt_b.x-pt_a.x)*(pt_c.y-pt_a.y):
if min(pt_a.x, pt_b.x) < pt_c.x < max(pt_a.x, pt_b.x):
return True
## point C not on segment
return False
def _parse_environment(self, stream):
""" Checks if attribute environment starts in the next line
(marked by '{'). Environment only contains text elements
interpreted as text.
Returns a dictionary of attributes.
"""
current_pos = stream.tell()
typ, params = self._parse_command(stream)
#go back to previous position when no environment in stream
if typ != '{':
stream.seek(current_pos)
return None
typ, params = self._parse_command(stream)
attributes = {}
while typ is not None:
if typ == 'T':
key, value = self._parse_text(stream, params)
attributes[key] = value
typ, params = self._parse_command(stream)
return attributes
def calculate_nets(self):
""" Calculate connected nets from previously stored segments
and netpoints. The code has been adapted from the kiCAD
parser since the definition of segements in the schematic
file are similar. The segments are checked against
existing nets and added when they touch it. For this
to work, it is required that intersecting segments are
divided prior to this method.
Returns a list of valid nets and its net points.
"""
nets = []
# Iterate over the segments, removing segments when added to a net
while self.segments:
seg = self.segments.pop() # pick a point
net_name = ''
pt_a, pt_b = seg
if pt_a.point_id in self.net_names:
net_name = self.net_names[pt_a.point_id]
elif pt_b.point_id in self.net_names:
net_name = self.net_names[pt_b.point_id]
new_net = net.Net(net_name)
new_net.attributes['_name'] = net_name
new_net.connect(seg)
found = True
while found:
found = set()
for seg in self.segments: # iterate over segments
if new_net.connected(seg): # segment touching the net
new_net.connect(seg) # add the segment
found.add(seg)
for seg in found:
self.segments.remove(seg)
nets.append(new_net)
## check if names are available for calculated nets
for net_obj in nets:
for point_id in net_obj.points:
## check for stored net names based on pointIDs
if point_id in self.net_names:
net_obj.net_id = self.net_names[point_id]
net_obj.attributes['_name'] = self.net_names[point_id]
if '_name' in net_obj.attributes:
annotation = Annotation(
"{{_name}}", ## annotation referencing attribute '_name'
0, 0,
self.conv_angle(0.0),
self.conv_bool(1),
)
net_obj.add_annotation(annotation)
return nets
def _open_file_or_zip(self, filename, mode='rU'):
if self.geda_zip is not None:
temp_dir = tempfile.mkdtemp()
self.geda_zip.extract(filename, temp_dir)
filename = os.path.join(temp_dir, filename)
return open(filename, mode)
def _parse_bus(self, params):
""" Processing a bus instance with start end end coordinates
at (x1, y1) and (x2, y2). *color* is ignored. *ripperdir*
defines the direction in which the bus rippers are oriented
relative to the direction of the bus.
"""
x1, x2 = params['x1'], params['x2']
y1, y2 = params['y1'], params['y2']
## ignore bus when length is zero
if x1 == x2 and y1 == y2:
return
pta_x, pta_y = self.conv_coords(x1, y1)
ptb_x, ptb_y = self.conv_coords(x2, y2)
self.segments.add((
self.get_netpoint(pta_x, pta_y),
self.get_netpoint(ptb_x, ptb_y)
))
def _parse_segment(self, stream, params):
""" Creates a segment from the command *params* and
stores it in the global segment list for further
processing in :py:method:divide_segments and
:py:method:calculate_nets. It also extracts the
net name from the attribute environment if
present.
"""
## store segement for processing later
x1, y1 = self.conv_coords(params['x1'], params['y1'])
x2, y2 = self.conv_coords(params['x2'], params['y2'])
## store segment points in global point list
pt_a = self.get_netpoint(x1, y1)
pt_b = self.get_netpoint(x2, y2)
## add segment to global list for later processing
self.segments.add((pt_a, pt_b))
attributes = self._parse_environment(stream)
if attributes is not None:
## create net with name in attributes
if attributes.has_key('_netname'):
net_name = attributes['_netname']
if net_name not in self.net_names.values():
self.net_names[pt_a.point_id] = net_name
def _parse_path(self, stream, params, mirrored=False):
""" Parses a SVG-like path provided path into a list
of simple shapes. The gEDA formats allows only line
and curve segments with absolute coordinates. Hence,
shapes are either Line or BezierCurve objects.
The method processes the stream data according to
the number of lines in *params*.
Returns a list of Line and BezierCurve shapes.
"""
num_lines = params['num_lines']
command = stream.readline().strip().split(self.DELIMITER)
if command[0] != 'M':
raise GEDAError('found invalid path in gEDA file')
def get_coords(string, mirrored):
""" Get coordinates from string with comma-sparated notation."""
x, y = [int(value) for value in string.strip().split(',')]
if mirrored:
x = 0-x
return (self.x_to_px(x), self.y_to_px(y))
shapes = []
current_pos = initial_pos = (get_coords(command[1], mirrored))
## loop over the remaining lines of commands (after 'M')
for dummy in range(num_lines-1):
command = stream.readline().strip().split(self.DELIMITER)
## draw line from current to given position
if command[0] == 'L':
assert(len(command) == 2)
end_pos = get_coords(command[1], mirrored)
line = shape.Line(current_pos, end_pos)
shapes.append(line)
current_pos = end_pos
## draw curve from current to given position
elif command[0] == 'C':
assert(len(command) == 4)
control1 = get_coords(command[1], mirrored)
control2 = get_coords(command[2], mirrored)
end_pos = get_coords(command[3], mirrored)
curve = shape.BezierCurve(
control1,
control2,
current_pos,
end_pos
)
shapes.append(curve)
current_pos = end_pos
## end of sub-path, straight line from current to initial position
elif command[0] in ['z', 'Z']:
shapes.append(
shape.Line(current_pos, initial_pos)
)
else:
raise GEDAError(
"invalid command type in path '%s'" % command[0]
)
return shapes
def _parse_arc(self, params, mirrored=False):
""" Creates an Arc object from the parameter in *params*. All
style related parameters are ignored.
Returns Arc object.
"""
arc_x = params['x']
start_angle = params['startangle']
sweep_angle = params['sweepangle']
if mirrored:
arc_x = 0 - arc_x
start_angle = start_angle + sweep_angle
if start_angle <= 180:
start_angle = 180 - start_angle
else:
start_angle = (360 - start_angle) + 180
return shape.Arc(
self.x_to_px(arc_x),
self.y_to_px(params['y']),
self.conv_angle(start_angle),
self.conv_angle(start_angle+sweep_angle),
self.to_px(params['radius']),
)
def _parse_line(self, params, mirrored=None):
""" Creates a Line object from the parameters in *params*. All
style related parameters are ignored.
Returns a Line object.
"""
line_x1 = params['x1']
line_x2 = params['x2']
if mirrored:
line_x1 = 0 - params['x1']
line_x2 = 0 - params['x2']
return shape.Line(
self.conv_coords(line_x1, params['y1']),
self.conv_coords(line_x2, params['y2']),
)
def _parse_box(self, params, mirrored=False):
""" Creates rectangle from gEDA box with origin in bottom left
corner. All style related values are ignored.
Returns a Rectangle object.
"""
rect_x = params['x']
if mirrored:
rect_x = 0-(rect_x+params['width'])
return shape.Rectangle(
self.x_to_px(rect_x),
self.y_to_px(params['y']+params['height']),
self.to_px(params['width']),
self.to_px(params['height'])
)
def _parse_circle(self, params, mirrored=False):
""" Creates a Circle object from the gEDA parameters in *params. All
style related parameters are ignored.
Returns a Circle object.
"""
vertex_x = params['x']
if mirrored:
vertex_x = 0-vertex_x
return shape.Circle(
self.x_to_px(vertex_x),
self.y_to_px(params['y']),
self.to_px(params['radius']),
)
def _parse_pin(self, stream, params, mirrored=False):
""" Creates a Pin object from the parameters in *param* and
text attributes provided in the following environment. The
environment is enclosed in ``{}`` and is required. If no
attributes can be extracted form *stream* an GEDAError
is raised.
The *pin_id* is retrieved from the 'pinnumber' attribute and
all other attributes are ignored. The conneted end of the
pin is taken from the 'whichend' parameter as defined in
the gEDA documentation.
Returns a Pin object.
"""
## pin requires an attribute enviroment, so parse it first
attributes = self._parse_environment(stream)
if attributes is None:
raise GEDAError('mandatory pin attributes missing')
if '_pinnumber' not in attributes:
raise GEDAError(
"mandatory attribute '_pinnumber' not assigned to pin"
)
whichend = params['whichend']
pin_x1, pin_x2 = params['x1'], params['x2']
if mirrored:
pin_x1 = 0-pin_x1
pin_x2 = 0-pin_x2
## determine wich end of the pin is the connected end
## 0: first point is connector
## 1: second point is connector
if whichend == 0:
connect_end = self.conv_coords(pin_x1, params['y1'])
null_end = self.conv_coords(pin_x2, params['y2'])
else:
null_end = self.conv_coords(pin_x1, params['y1'])
connect_end = self.conv_coords(pin_x2, params['y2'])
label = None
if '_pinlabel' in attributes:
label = shape.Label(
connect_end[0],
connect_end[1],
attributes.get('_pinlabel'),
'left',
0.0
)
return components.Pin(
attributes['_pinnumber'], #pin number
null_end,
connect_end,
label=label
)
def _parse_command(self, stream, move_to=None):
""" Parse the next command in *stream*. The object type is check
for validity and its parameters are parsed and converted to
the expected typs in the parsers lookup table. If *move_to*
is provided it is used to translate all coordinates into by
the given coordinate.
Returns a tuple (*object type*, *parameters*) where *parameters*
is a dictionary of paramter name and value.
Raises GEDAError when object type is not known.
"""
line = stream.readline()
while line.startswith('#') or line == '\n':
line = stream.readline()
line = line.strip()
command_data = line.strip().split(self.DELIMITER)
if len(command_data[0]) == 0 or command_data[0] in [']', '}']:
return None, []
object_type, command_data = command_data[0].strip(), command_data[1:]
params = {}
for idx, (name, typ, default) in enumerate(self.OBJECT_TYPES[object_type]):
if idx >= len(command_data):
## prevent text commands of version 1 from breaking
params[name] = default
else:
params[name] = typ(command_data[idx])
assert(len(params) == len(self.OBJECT_TYPES[object_type]))
if move_to is not None:
## element in EMBEDDED component need to be moved
## to origin (0, 0) from component origin
if object_type in ['T', 'B', 'C', 'A']:
params['x'] = params['x'] - move_to[0]
params['y'] = params['y'] - move_to[1]
elif object_type in ['L', 'P']:
params['x1'] = params['x1'] - move_to[0]
params['y1'] = params['y1'] - move_to[1]
params['x2'] = params['x2'] - move_to[0]
params['y2'] = params['y2'] - move_to[1]
if object_type not in self.OBJECT_TYPES:
raise GEDAError("unknown type '%s' in file" % object_type)
return object_type, params
@classmethod
def to_px(cls, value):
""" Converts value in MILS to pixels using the parsers
scale factor.
Returns an integer value converted to pixels.
"""
return int(value / cls.SCALE_FACTOR)
def x_to_px(self, x_mils):
""" Convert *px* from MILS to pixels using the scale
factor and translating it allong the X-axis in
offset.
Returns translated and converted X coordinate.
"""
return int(float(x_mils - self.offset.x) / self.SCALE_FACTOR)
def y_to_px(self, y_mils):
""" Convert *py* from MILS to pixels using the scale
factor and translating it allong the Y-axis in
offset.
Returns translated and converted Y coordinate.
"""
return int(float(y_mils - self.offset.y) / self.SCALE_FACTOR)
def conv_coords(self, orig_x, orig_y):
""" Converts coordinats *orig_x* and *orig_y* from MILS
to pixel units based on scale factor. The converted
coordinates are in multiples of 10px.
"""
orig_x, orig_y = int(orig_x), int(orig_y)
return (
self.x_to_px(orig_x),
self.y_to_px(orig_y)
)
@staticmethod
def conv_bool(value):
""" Converts *value* into string representing boolean
'true' or 'false'. *value* can be of any numeric or
boolean type.
"""
if value in ['true', 'false']:
return value
return str(bool(int(value)) is True).lower()
@staticmethod
def conv_angle(angle):
""" Converts *angle* (in degrees) to pi radians. gEDA
sets degree angles counter-clockwise whereas upverter
uses pi radians clockwise. Therefore the direction of
*angle* is therefore adjusted first.
"""
angle = angle % 360.0
if angle > 0:
angle = abs(360 - angle)
return round(angle/180.0, 1)
# 0) ...
# 1) ???
# 2) Profit!!!
from core.design import Design
from xml.etree.ElementTree import ElementTree
class Eagle:
""" The Eagle Format Parser """
def __init__(self):
pass
def parse(self, filename):
""" Parse an Eagle file into a design """
<<<<<<< HEAD
#design = design()
#import an xmltree from the file provided
xmltree = ElementTree(file=filename)
xmlroot = xmltree.getroot()
return xmltree
=======
design = Design()
f = open(filename, "w")
#TODO: Read!
f.close()
return design
>>>>>>> 5abb89ac932f010195dea31c734cf01a4d7fff5f