def run(self):
if self.state == Node.SUCCESS:
return
try:
with open(self.filename) as f:
pass
except PermissionError:
self.fail('Access denied.')
return
self.data = PolylineData()
is_i2s = self.filename[-4:] == '.i2s'
if is_i2s:
with BlueKenue.Read(self.filename) as f:
f.read_header()
for poly in f.get_open_polylines():
self.data.add_line(poly)
self.data.set_fields(['Value'])
else:
try:
for poly in Shapefile.get_open_polylines(self.filename):
self.data.add_line(poly)
except struct.error:
self.fail('Inconsistent bytes.')
return
self.data.set_fields(Shapefile.get_all_fields(self.filename))
if self.data.is_empty():
self.fail('the file does not contain any 2D open polyline.')
return
self.success('The file contains {} open line{}.'.format(
len(self.data), 's' if len(self.data) > 1 else ''))
def read(self):
try:
with bk.Read(self.from_file) as fin:
fin.read_header()
for point in fin.get_points():
self.shapes.append(point)
self.header = fin.header
except PermissionError:
raise PermissionError
if not self.shapes:
raise ValueError
def read(self):
try:
with bk.Read(self.from_file) as fin:
fin.read_header()
for line in fin.get_lines():
self.shapes.append(line)
if line.is_closed():
self.nb_closed += 1
else:
self.nb_open += 1
self.header = fin.header
except PermissionError:
raise PermissionError
if not self.shapes:
raise ValueError