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# ext/babelplugin.py
# Copyright 2006-2022 the Mako authors and contributors <see AUTHORS file>
#
# This module is part of Mako and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
"""gettext message extraction via Babel: https://pypi.org/project/Babel/"""
from babel.messages.extract import extract_python
from mako.ext.extract import MessageExtractor
class BabelMakoExtractor(MessageExtractor):
def __init__(self, keywords, comment_tags, options):
self.keywords = keywords
self.options = options
self.config = {
"comment-tags": " ".join(comment_tags),
"encoding": options.get(
"input_encoding", options.get("encoding", None)
),
}
super().__init__()
def __call__(self, fileobj):
return self.process_file(fileobj)
def process_python(self, code, code_lineno, translator_strings):
comment_tags = self.config["comment-tags"]
for (
lineno,
funcname,
messages,
python_translator_comments,
) in extract_python(code, self.keywords, comment_tags, self.options):
yield (
code_lineno + (lineno - 1),
funcname,
messages,
translator_strings + python_translator_comments,
)
def extract(fileobj, keywords, comment_tags, options):
"""Extract messages from Mako templates.
:param fileobj: the file-like object the messages should be extracted from
:param keywords: a list of keywords (i.e. function names) that should be
recognized as translation functions
:param comment_tags: a list of translator tags to search for and include
in the results
:param options: a dictionary of additional options (optional)
:return: an iterator over ``(lineno, funcname, message, comments)`` tuples
:rtype: ``iterator``
"""
extractor = BabelMakoExtractor(keywords, comment_tags, options)
yield from extractor(fileobj)
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