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wordifier.py

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    • num2words.py 4.03 KiB
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    """Module for converting numbers to words."""
import json
import math
import os
from pathlib import Path

from src.utils import get_word_form, trailing_zeros


filename = os.path.join(Path(__file__).parent.parent, 'data', 'numbers.json')
with open(filename, 'r') as numbers_file:
    numbers_dict = json.load(numbers_file)
    number_words = {int(k): v for k, v in numbers_dict['number_words'].items()}
    ordinal_number_words = {int(k): v for k, v
                            in numbers_dict['ordinal_number_words'].items()}
    large_numbers = {int(k): v for k, v
                     in numbers_dict['large_numbers'].items()}
    ordinal_large_numbers = {int(k): v for k, v
                             in numbers_dict['ordinal_large_numbers'].items()}


def three_digit_to_words(text, tag='', ordinal=False):
    """Convert three digits numbers to words with given tag. Util function.

    :param text: A three-digit number to be converted to words.
    :type text: str or int
    :param tag: Morphological tag. (Default value = '')
    :type tag: str
    :param ordinal: True if the number is in the ordinal form
    ("first", "fifth", etc.), False when the number is in its basic form
    ("one", "five", etc.). (Default value = False)
    :type ordinal: bool

    :returns: The provided 'text' parameter value in words.
    :rtype: str

    """
    map_to_words = ordinal_number_words if ordinal else number_words

    number = int(text)
    if number == 0:
        return get_word_form(map_to_words[number], tag)
    words = []
    units = number % 10
    tens = number % 100 - units
    hundredths = number // 100
    if 0 < tens + units <= 20:
        word = get_word_form(map_to_words[tens + units], tag)
        words.append(word)
    else:
        if units != 0:
            words.append(get_word_form(map_to_words[units], tag))
        if tens != 0:
            words.append(get_word_form(map_to_words[tens], tag))

    if hundredths != 0:
        if tens == 0 and units == 0:
            words.append(get_word_form(map_to_words[hundredths * 100], tag))
        else:
            words.append(get_word_form(number_words[hundredths * 100], ''))

    return ' '.join(reversed(words))


def num2words(text, tag='', ordinal=False):
    """Converts a number to words.

    :param text: Three digits number.
    :type text: str
    :param tag: Morphological tag. (Default value = '')
    :type tag: str
    :param ordinal: True if the number is in the ordinal form
    ("first", "fifth", etc.), False when the number is in its basic form
    ("one", "five", etc.). (Default value = False)
    :type ordinal: bool

    :returns: Number as words with given tag.
    :rtype: str

    """
    i = 0
    words = []
    number = int(text)

    if ordinal:
        zeros = trailing_zeros(number)
        zeros = 3 * math.floor(zeros / 3)
        if zeros > 2 and 0 < len(text) - zeros <= 3:
            number = number // 10 ** zeros
            if number == 1:
                words = ''
            else:
                words = three_digit_to_words(str(number), 'numcomp')
            words += get_word_form(ordinal_large_numbers[zeros], tag)
            return words

    if len(text) <= 3 or number == 0:
        return three_digit_to_words(text, tag, ordinal)

    while number > 0:
        remainder = number % 1000
        if i == 0:
            triple = three_digit_to_words(remainder, tag, ordinal)
        else:
            triple = three_digit_to_words(remainder)
        number = number // 1000
        if remainder == 0 and number != 0:
            i += 3
            continue

        if i == 0:
            words.append(triple)
        else:
            if remainder == 1:
                tag = 'subst:sg:nom:m3'
            elif remainder % 10 in [2, 3, 4]:
                tag = 'subst:pl:nom:m3'
            else:
                tag = 'subst:pl:gen:m3'
            form = get_word_form(large_numbers[i], tag)
            if remainder == 1:
                words.append(form)
            else:
                words.append(triple + ' ' + form)
        i += 3
    return ' '.join(list(reversed(words)))