File: order_languages.py

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import json
import os
from collections import OrderedDict

import regex as re
import requests
from parsel import Selector

from dateparser_scripts.utils import get_raw_data

os.chdir(os.path.dirname(os.path.abspath(__file__)))

# Languages with insufficient translation data are excluded
avoid_languages = {"cu", "kkj", "nds", "prg", "tk", "vai", "vai-Latn", "vai-Vaii", "vo"}


def _get_language_locale_dict():
    cldr_dates_full_dir = "../raw_data/cldr_dates_full/main/"
    available_locale_names = os.listdir(cldr_dates_full_dir)
    available_language_names = [
        shortname
        for shortname in available_locale_names
        if not re.search(r"-[A-Z0-9]+$", shortname)
    ]
    available_language_names.remove("root")
    language_locale_dict = {}
    for language_name in available_language_names:
        language_locale_dict[language_name] = []
        for locale_name in available_locale_names:
            if re.match(language_name + "-[A-Z0-9]+$", locale_name):
                language_locale_dict[language_name].append(locale_name)

    for language in avoid_languages:
        if language in language_locale_dict:
            del language_locale_dict[language]
    return language_locale_dict


def _get_language_order(language_locale_dict):
    def get_most_common_locales():
        # Order from https://w3techs.com/technologies/overview/content_language
        # Last updated on 03.10.2022
        old_common_locales = [
            "en",
            "ru",
            "es",
            "de",
            "tr",
            "fr",
            "fa",
            "ja",
            "zh",
            "vi",
            "it",
            "nl",
            "pt",
            "ar",
            "pl",
            "id",
            "ko",
            "uk",
            "th",
            "he",
            "cs",
            "sv",
            "ro",
            "el",
            "da",
            "hu",
            "fi",
            "sr",
            "sk",
            "bg",
            "nb",
            "hr",
            "lt",
            "no",
            "hi",
            "sl",
            "ca",
            "et",
        ]

        response = requests.get(
            "https://w3techs.com/technologies/overview/content_language"
        )
        sel = Selector(text=response.text)
        if response.ok:
            try:
                bars = sel.xpath("//table[@class='bars']//a/@href").getall()
                if not bars:
                    raise ValueError("No bars found")
                new_most_common_locales = [
                    i.replace("https://w3techs.com/technologies/details/cl", "").strip(
                        "-"
                    )
                    for i in bars
                ]
                if new_most_common_locales[0] != "en":
                    raise ValueError("English is not the first language")
            except Exception as e:
                print(e)
                print("The website could have changed, please update the code")
                return old_common_locales
        else:
            return old_common_locales
        return new_most_common_locales

    territory_info_file = "../raw_data/cldr_core/supplemental/territoryInfo.json"
    with open(territory_info_file) as f:
        territory_content = json.load(f)
    territory_info_data = territory_content["supplemental"]["territoryInfo"]

    language_population_dict = {}
    for territory in territory_info_data:
        population = int(territory_info_data[territory]["_population"])
        try:
            lang_dict = territory_info_data[territory]["languagePopulation"]
            for language in lang_dict:
                language_population = (
                    float(lang_dict[language]["_populationPercent"]) * population
                )
                if language in language_population_dict:
                    language_population_dict[language] += language_population
                else:
                    language_population_dict[language] = language_population
        except Exception:
            pass

    most_common_locales = get_most_common_locales()
    language_order_with_duplicates = most_common_locales + sorted(
        language_population_dict.keys(),
        key=lambda x: (language_population_dict[x], x),
        reverse=True,
    )
    language_order = sorted(
        set(language_order_with_duplicates),
        key=lambda x: language_order_with_duplicates.index(x),
    )

    for index in range(0, len(language_order)):
        language_order[index] = re.sub(r"_", r"-", language_order[index])

    cldr_languages = language_locale_dict.keys()
    supplementary_date_directory = (
        "../dateparser_data/supplementary_language_data/date_translation_data"
    )
    supplementary_languages = [x[:-5] for x in os.listdir(supplementary_date_directory)]
    available_languages = set(cldr_languages).union(set(supplementary_languages))
    language_order = [
        shortname for shortname in language_order if shortname in available_languages
    ]
    absent_languages = set(available_languages) - set(language_order)
    remaining_languages = []
    for language in absent_languages:
        parent_language = re.sub(r"-\w+", "", language)
        if parent_language in language_order:
            language_order.insert(language_order.index(parent_language) + 1, language)
        else:
            remaining_languages.append(language)
    language_order = language_order + sorted(remaining_languages)
    language_order = list(map(str, language_order))
    return language_order


def generate_language_map(language_order):
    data = {}
    for lang in sorted(language_order):
        if "-" not in lang:
            data[lang] = [lang]
        else:
            data[lang.split("-")[0]].append(lang)
    return data


def main():
    get_raw_data()
    language_locale_dict = _get_language_locale_dict()
    language_order = _get_language_order(language_locale_dict)

    parent_directory = "../dateparser/data/"
    filename = "../dateparser/data/languages_info.py"
    if not os.path.isdir(parent_directory):
        os.mkdir(parent_directory)
    language_order_string = "language_order = " + json.dumps(
        language_order, separators=(",", ": "), indent=4
    )

    complete_language_locale_dict = OrderedDict()
    for key in language_order:
        if key in language_locale_dict.keys():
            complete_language_locale_dict[key] = sorted(language_locale_dict[key])
        else:
            complete_language_locale_dict[key] = []

    language_locale_dict_string = "language_locale_dict = " + json.dumps(
        complete_language_locale_dict, separators=(",", ": "), indent=4
    )
    language_map_data = generate_language_map(language_order)
    language_map_data_string = "language_map = " + json.dumps(
        language_map_data, separators=(",", ": "), indent=4
    )

    languages_info_string = (
        language_order_string
        + "\n\n"
        + language_map_data_string
        + "\n\n"
        + language_locale_dict_string
        + "\n"
    )
    with open(filename, "w") as f:
        f.write(languages_info_string)


if __name__ == "__main__":
    main()