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# This file is part of beets.
# Copyright 2016, Malte Ried.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""Filter imported files using a regular expression."""
import re
from beets import config
from beets.importer import SingletonImportTask
from beets.plugins import BeetsPlugin
from beets.util import bytestring_path
class FileFilterPlugin(BeetsPlugin):
def __init__(self):
super().__init__()
self.register_listener(
"import_task_created", self.import_task_created_event
)
self.config.add({"path": ".*"})
self.path_album_regex = self.path_singleton_regex = re.compile(
bytestring_path(self.config["path"].get())
)
if "album_path" in self.config:
self.path_album_regex = re.compile(
bytestring_path(self.config["album_path"].get())
)
if "singleton_path" in self.config:
self.path_singleton_regex = re.compile(
bytestring_path(self.config["singleton_path"].get())
)
def import_task_created_event(self, session, task):
if task.items and len(task.items) > 0:
items_to_import = []
for item in task.items:
if self.file_filter(item["path"]):
items_to_import.append(item)
if len(items_to_import) > 0:
task.items = items_to_import
else:
# Returning an empty list of tasks from the handler
# drops the task from the rest of the importer pipeline.
return []
elif isinstance(task, SingletonImportTask):
if not self.file_filter(task.item["path"]):
return []
# If not filtered, return the original task unchanged.
return [task]
def file_filter(self, full_path):
"""Checks if the configured regular expressions allow the import
of the file given in full_path.
"""
import_config = dict(config["import"])
full_path = bytestring_path(full_path)
if "singletons" not in import_config or not import_config["singletons"]:
# Album
return self.path_album_regex.match(full_path) is not None
else:
# Singleton
return self.path_singleton_regex.match(full_path) is not None
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