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from __future__ import absolute_import, unicode_literals
import os
from itertools import product
from pathlib import PurePath
from scss.extension.core import CoreExtension
from scss.source import SourceFile
from ..utils import get_file_and_storage
class DjangoExtension(CoreExtension):
name = 'django'
def handle_import(self, name, compilation, rule):
"""
Re-implementation of the core Sass import mechanism, which looks for
files using the staticfiles storage and staticfiles finders.
"""
original_path = PurePath(name)
search_exts = list(compilation.compiler.dynamic_extensions)
if original_path.suffix and original_path.suffix in search_exts:
basename = original_path.stem
else:
basename = original_path.name
if original_path.is_absolute():
# Remove the beginning slash
search_path = original_path.relative_to('/').parent
elif rule.source_file.origin:
search_path = rule.source_file.origin
if original_path.parent:
search_path = os.path.normpath(str(search_path / original_path.parent))
else:
search_path = original_path.parent
for prefix, suffix in product(('_', ''), search_exts):
filename = PurePath(prefix + basename + suffix)
full_filename, storage = get_file_and_storage(str(search_path / filename))
if full_filename:
with storage.open(full_filename) as f:
return SourceFile.from_file(f, origin=search_path, relpath=filename)
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