65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
import os
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import six
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import yaml
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from collections import defaultdict
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from geodata.configs.utils import nested_get, DoesNotExist, alternative_probabilities
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from geodata.math.sampling import cdf, weighted_choice
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from geodata.encoding import safe_encode
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this_dir = os.path.realpath(os.path.dirname(__file__))
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BOUNDARY_NAMES_DIR = os.path.join(this_dir, os.pardir, os.pardir, os.pardir,
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'resources', 'boundaries', 'names')
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BOUNDARY_NAMES_CONFIG = os.path.join(BOUNDARY_NAMES_DIR, 'global.yaml')
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class BoundaryNames(object):
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DEFAULT_NAME_KEY = 'name'
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def __init__(self, config_file=BOUNDARY_NAMES_CONFIG):
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config = yaml.load(open(config_file))
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default_names = nested_get(config, ('names', 'keys'))
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name_keys, probs = alternative_probabilities(default_names)
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self.name_keys = name_keys
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self.name_key_probs = cdf(probs)
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self.component_name_keys = {}
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for component, component_config in six.iteritems(nested_get(config, ('names', 'components'), default={})):
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component_names = component_config.get('keys')
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component_name_keys, component_probs = alternative_probabilities(component_names)
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self.component_name_keys[component] = (component_name_keys, cdf(component_probs))
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self.exceptions = {}
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for props in nested_get(config, ('names', 'exceptions'), default=[]):
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object_type = props['type']
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object_id = safe_encode(props['id'])
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keys = [props['default']]
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probs = [props['probability']]
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for alt in props.get('alternatives', []):
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keys.append(alt['alternative'])
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probs.append(alt['probability'])
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probs = cdf(probs)
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self.exceptions[(object_type, object_id)] = (keys, probs)
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def name_key(self, props, component):
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object_type = props.get('type')
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object_id = safe_encode(props.get('id', ''))
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if (object_type, object_id) in self.exceptions:
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values, probs = self.exceptions[(object_type, object_id)]
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return weighted_choice(values, probs)
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name_keys, probs = self.component_name_keys.get(component, (self.name_keys, self.name_key_probs))
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return weighted_choice(name_keys, probs)
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boundary_names = BoundaryNames()
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