123 lines
5.1 KiB
Python
123 lines
5.1 KiB
Python
import random
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import six
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from geodata.addresses.config import address_config
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from geodata.addresses.numbering import NumberedComponent, sample_alphabet, latin_alphabet
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from geodata.encoding import safe_decode
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from geodata.math.sampling import weighted_choice, zipfian_distribution, cdf
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class Floor(NumberedComponent):
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# When we don't know the number of floors, use a Zipfian distribution
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# to choose randomly between 1 and max_floors with 1 being much more
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# likely than 2, etc.
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max_floors = 10
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max_basements = 2
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numbered_floors = range(max_floors + 1) + range(-1, -max_basements - 1, -1)
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floor_probs = zipfian_distribution(len(numbered_floors), 2.0)
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floor_probs_cdf = cdf(floor_probs)
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# For use with letters e.g. A0 is probably not as common
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floors_letters = range(1, max_floors + 1) + [0]
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floors_letters_probs = zipfian_distribution(len(floors_letters), 2.0)
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floors_letters_cdf = cdf(floors_letters_probs)
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@classmethod
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def sample_floors(cls, num_floors, num_basements=0):
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num_floors = int(num_floors)
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return random.randint(-num_basements, num_floors - 1)
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@classmethod
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def sample_positive_floors(cls, num_floors, zeroth_floor_prob=0.001):
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num_floors = int(num_floors)
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if random.random() < zeroth_floor_prob:
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return 0
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return random.randint(1, num_floors - 1)
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@classmethod
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def random(cls, language, country=None, num_floors=None, num_basements=None):
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num_type, num_type_props = cls.choose_alphanumeric_type('levels.alphanumeric', language, country=country)
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if num_floors is not None:
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number = cls.sample_floors(num_floors, num_basements or 0)
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else:
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number = weighted_choice(cls.numbered_floors, cls.floor_probs_cdf)
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numbering_starts_at = int(address_config.get_property('levels.numbering_starts_at', language, country=country, default=0))
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if number >= 0:
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number += numbering_starts_at
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if num_type == cls.NUMERIC:
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return safe_decode(number)
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else:
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alphabet = address_config.get_property('alphabet', language, country=country, default=latin_alphabet)
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letter = sample_alphabet(alphabet)
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if num_type == cls.ALPHA:
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return letter
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else:
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number = weighted_choice(cls.floors_letters, cls.floors_letters_cdf)
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if num_type == cls.ALPHA_PLUS_NUMERIC:
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return six.u('{}{}').format(letter, number)
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elif num_type == cls.NUMERIC_PLUS_ALPHA:
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return six.u('{}{}').format(number, letter)
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@classmethod
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def phrase(cls, floor, language, country=None, is_top=False):
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if floor is None:
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return None
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floor = safe_decode(floor)
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try:
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floor = int(floor)
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integer_floor = True
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except (ValueError, TypeError):
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try:
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floor = float(floor)
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integer_floor = int(floor) == floor
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except (ValueError, TypeError):
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return cls.numeric_phrase('levels.alphanumeric', floor, language,
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dictionaries=['level_types_numbered'], country=country)
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alias_prefix = 'levels.aliases'
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aliases = address_config.get_property(alias_prefix, language, country=country)
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if aliases:
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alias = None
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if not integer_floor and floor >= 0 and 'half_floors' in aliases:
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floor = int(floor)
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alias = 'half_floors'
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elif not integer_floor and floor < 0 and 'half_floors_negative' in aliases:
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floor = int(floor)
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alias = 'half_floors_negative'
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elif floor < -1 and '<-1' in aliases:
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alias = '<-1'
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elif is_top and 'top' in aliases:
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alias = 'top'
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elif safe_decode(floor) in aliases:
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alias = safe_decode(floor)
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floor = safe_decode(floor)
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if alias:
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alias_props = aliases.get(alias)
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# Aliases upon aliases, e.g. for something like "Upper Mezzanine"
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# where it's an alias for "1" under the half_floors key
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if safe_decode(floor) in alias_props.get('aliases', {}):
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alias_prefix = '{}.{}.aliases'.format(alias_prefix, alias)
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alias = safe_decode(floor)
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if alias:
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return cls.numeric_phrase('{}.{}'.format(alias_prefix, alias), floor, language,
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dictionaries=['level_types_basement',
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'level_types_mezzanine',
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'level_types_numbered',
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'level_types_standalone',
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'level_types_sub_basement'],
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country=country)
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return cls.numeric_phrase('levels.alphanumeric', floor, language,
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dictionaries=['level_types_numbered'], country=country) |