117 lines
4.0 KiB
Python
117 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright (c) 2020 Salvador E. Tropea
|
|
# Copyright (c) 2020 Instituto Nacional de Tecnología Industrial
|
|
# License: GPL-3.0
|
|
# Project: KiBot (formerly KiPlot)
|
|
from .registrable import RegFilter, Registrable, RegOutput
|
|
from .error import KiPlotConfigurationError
|
|
from .macros import macros, document # noqa: F401
|
|
|
|
|
|
class DummyFilter(Registrable):
|
|
""" A filter that allows all """
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.name = 'Dummy'
|
|
self.type = 'dummy'
|
|
self.comment = 'A filter that does nothing'
|
|
|
|
def filter(self, comp):
|
|
return True
|
|
|
|
|
|
class MultiFilter(Registrable):
|
|
""" A filter containing a list of filters.
|
|
They are applied in sequence. """
|
|
def __init__(self, filters):
|
|
super().__init__()
|
|
self.name = ','.join([f.name for f in filters])
|
|
self.type = ','.join([f.type for f in filters])
|
|
self.comment = 'Multi-filter'
|
|
self.filters = filters
|
|
|
|
def filter(self, comp):
|
|
for f in self.filters:
|
|
if not f.filter(comp):
|
|
return False
|
|
return True
|
|
|
|
|
|
class NotFilter(Registrable):
|
|
""" A filter that returns the inverted result """
|
|
def __init__(self, filter):
|
|
super().__init__()
|
|
self.name = filter.name
|
|
self.type = '!'+filter.type
|
|
self.comment = filter.comment
|
|
self._filter = filter
|
|
|
|
def filter(self, comp):
|
|
return not self._filter.filter(comp)
|
|
|
|
|
|
class BaseFilter(RegFilter):
|
|
def __init__(self):
|
|
super().__init__()
|
|
self._unkown_is_error = True
|
|
with document:
|
|
self.name = ''
|
|
""" Used to identify this particular filter definition """
|
|
self.type = ''
|
|
""" Type of filter """
|
|
self.comment = ''
|
|
""" A comment for documentation purposes """
|
|
|
|
@staticmethod
|
|
def solve_filter(names, def_key, def_real, creator, target_name):
|
|
""" Name can be:
|
|
- A class, meaning we have to use a default.
|
|
- A string, the name of a filter.
|
|
- A list of strings, the name of 1 or more filters.
|
|
If any of the names matches def_key we call creator asking to create the filter.
|
|
If def_real is not None we pass this name to creator. """
|
|
if isinstance(names, type):
|
|
# Nothing specified, use the default
|
|
names = [def_key]
|
|
elif isinstance(names, str):
|
|
# User provided, but only one, make a list
|
|
names = [names]
|
|
# Here we should have a list of strings
|
|
filters = []
|
|
for name in names:
|
|
if name and name[0] == '!':
|
|
invert = True
|
|
name = name[1:]
|
|
else:
|
|
invert = False
|
|
filter = None
|
|
if name == def_key:
|
|
# Matched the default name, translate it to the real name
|
|
if def_real:
|
|
name = def_real
|
|
# Is already defined?
|
|
if RegOutput.is_filter(name):
|
|
filter = RegOutput.get_filter(name)
|
|
else: # Nope, create it
|
|
tree = creator(name)
|
|
filter = RegFilter.get_class_for(tree['type'])()
|
|
filter.set_tree(tree)
|
|
filter.config()
|
|
RegOutput.add_filter(filter)
|
|
elif name:
|
|
# A filter that is supposed to exist
|
|
if not RegOutput.is_filter(name):
|
|
raise KiPlotConfigurationError("Unknown filter `{}` used for `{}`".format(name, target_name))
|
|
filter = RegOutput.get_filter(name)
|
|
if filter:
|
|
if invert:
|
|
filters.append(NotFilter(filter))
|
|
else:
|
|
filters.append(filter)
|
|
# Finished collecting filters
|
|
if not filters:
|
|
return DummyFilter()
|
|
if len(filters) == 1:
|
|
return filters[0]
|
|
return MultiFilter(filters)
|