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76 lines
1.9 KiB
76 lines
1.9 KiB
# Imports
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import logging
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from importlib import import_module
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from .constants import LOGGER_NAME
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from .library.commands import ItemizedCommand
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log = logging.getLogger(LOGGER_NAME)
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# Exports
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__all__ = (
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"Factory",
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)
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# Classes
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class Factory(object):
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"""A command factory."""
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def __init__(self, overlay):
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"""Initialize the factory.
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:param overlay: The name of the overlay to use for generating commands.
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:type overlay: str
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"""
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self.is_loaded = False
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self.overlay = None
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self._overlay = overlay
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def __repr__(self):
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return "<%s %s>" % (self.__class__.__name__, self._overlay)
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def get_command(self, name, *args, **kwargs):
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"""Get a command.
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:param name: The name of the command.
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:type name: str
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args and kwargs are passed to the initialize the command.
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:rtype: scripttease.library.commands.Command | scripttease.library.commands.ItemizedCommand
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"""
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if not self.overlay.command_exists(name):
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log.warning("Command does not exist in %s overlay: %s" % (self._overlay, name))
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return None
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callback = self.overlay.MAPPINGS[name]
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try:
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items = kwargs.pop("items", None)
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if items is not None:
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return ItemizedCommand(callback, items, *args, **kwargs)
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return callback(*args, **kwargs)
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except (KeyError, NameError, TypeError, ValueError) as e:
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log.critical("Failed to load %s command: %s" % (name, e))
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return None
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def load(self):
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"""Load the factory.
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:rtype: bool
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"""
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try:
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self.overlay = import_module("scripttease.library.overlays.%s" % self._overlay)
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self.is_loaded = True
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except ImportError as e:
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log.error("The %s overlay could not be imported: %s" % (self._overlay, str(e)))
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pass
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return self.is_loaded
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