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searxng/searx/babel_extract.py

52 lines
1.5 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""This module implements the :origin:`searxng_msg <babel.cfg>` extractor to
extract messages from:
- :origin:`searx/searxng.msg`
The ``searxng.msg`` files are selected by Babel_, see Babel's configuration in
:origin:`babel.cfg`::
searxng_msg = searx.babel_extract.extract
...
[searxng_msg: **/searxng.msg]
A ``searxng.msg`` file is a python file that is *executed* by the
:py:obj:`extract` function. Additional ``searxng.msg`` files can be added by:
1. Adding a ``searxng.msg`` file in one of the SearXNG python packages and
2. implement a method in :py:obj:`extract` that yields messages from this file.
.. _Babel: https://babel.pocoo.org/en/latest/index.html
"""
from os import path
SEARXNG_MSG_FILE = "searxng.msg"
_MSG_FILES = [path.join(path.dirname(__file__), SEARXNG_MSG_FILE)]
def extract(
# pylint: disable=unused-argument
fileobj,
keywords,
comment_tags,
options,
):
"""Extract messages from ``searxng.msg`` files by a custom extractor_.
.. _extractor:
https://babel.pocoo.org/en/latest/messages.html#writing-extraction-methods
"""
if fileobj.name not in _MSG_FILES:
raise RuntimeError("don't know how to extract messages from %s" % fileobj.name)
namespace = {}
exec(fileobj.read(), {}, namespace) # pylint: disable=exec-used
for name in namespace['__all__']:
for k, v in namespace[name].items():
yield 0, '_', v, ["%s['%s']" % (name, k)]