mirror of
https://github.com/LibreTranslate/LibreTranslate.git
synced 2024-05-03 09:58:54 +00:00
61 lines
2.4 KiB
Python
61 lines
2.4 KiB
Python
from pathlib import Path
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from argostranslate import package, translate
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import libretranslate.language
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def boot(load_only=None, update_models=False):
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try:
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check_and_install_models(force=update_models, load_only_lang_codes=load_only)
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except Exception as e:
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print("Cannot update models (normal if you're offline): %s" % str(e))
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def check_and_install_models(force=False, load_only_lang_codes=None):
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if len(package.get_installed_packages()) < 2 or force:
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# Update package definitions from remote
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print("Updating language models")
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package.update_package_index()
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# Load available packages from local package index
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available_packages = package.get_available_packages()
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print("Found %s models" % len(available_packages))
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if load_only_lang_codes is not None:
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# load_only_lang_codes: List[str] (codes)
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# Ensure the user does not use any unavailable language code.
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unavailable_lang_codes = set(load_only_lang_codes)
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for pack in available_packages:
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unavailable_lang_codes -= {pack.from_code, pack.to_code}
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if unavailable_lang_codes:
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raise ValueError(
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"Unavailable language codes: %s."
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% ",".join(sorted(unavailable_lang_codes))
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)
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# Keep only the packages that have both from_code and to_code in our list.
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available_packages = [
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pack
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for pack in available_packages
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if pack.from_code in load_only_lang_codes and pack.to_code in load_only_lang_codes
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]
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if not available_packages:
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raise ValueError("no available package")
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print("Keep %s models" % len(available_packages))
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# Download and install all available packages
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for available_package in available_packages:
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print(
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"Downloading %s (%s) ..."
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% (available_package, available_package.package_version)
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)
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download_path = available_package.download()
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package.install_from_path(download_path)
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# reload installed languages
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app.language.languages = translate.get_installed_languages()
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print(
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"Loaded support for %s languages (%s models total)!"
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% (len(translate.get_installed_languages()), len(available_packages))
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)
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