154 lines
5.0 KiB
Python
154 lines
5.0 KiB
Python
from __future__ import unicode_literals
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import logging
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import os
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import time
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from mopidy import commands, exceptions
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from mopidy.audio import scan
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from mopidy.utils import path
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from . import translator
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logger = logging.getLogger(__name__)
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def _get_library(args, config):
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libraries = dict((l.name, l) for l in args.registry['local:library'])
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library_name = config['local']['library']
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if library_name not in libraries:
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logger.warning('Local library %s not found', library_name)
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return 1
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logger.debug('Using %s as the local library', library_name)
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return libraries[library_name](config)
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class LocalCommand(commands.Command):
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def __init__(self):
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super(LocalCommand, self).__init__()
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self.add_child('scan', ScanCommand())
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self.add_child('clear', ClearCommand())
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class ClearCommand(commands.Command):
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help = 'Clear local media files from the local library.'
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def run(self, args, config):
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library = _get_library(args, config)
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prompt = 'Are you sure you want to clear the library? [y/N] '
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if raw_input(prompt).lower() != 'y':
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logging.info('Clearing library aborted.')
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return 0
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if library.clear():
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logging.info('Library succesfully cleared.')
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return 0
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logging.warning('Unable to clear library.')
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return 1
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class ScanCommand(commands.Command):
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help = 'Scan local media files and populate the local library.'
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def __init__(self):
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super(ScanCommand, self).__init__()
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self.add_argument('--limit',
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action='store', type=int, dest='limit', default=None,
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help='Maxmimum number of tracks to scan')
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def run(self, args, config):
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media_dir = config['local']['media_dir']
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scan_timeout = config['local']['scan_timeout']
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flush_threshold = config['local']['scan_flush_threshold']
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excluded_file_extensions = config['local']['excluded_file_extensions']
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excluded_file_extensions = set(
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file_ext.lower() for file_ext in excluded_file_extensions)
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library = _get_library(args, config)
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uri_path_mapping = {}
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uris_in_library = set()
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uris_to_update = set()
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uris_to_remove = set()
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num_tracks = library.load()
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logger.info('Checking %d tracks from library.', num_tracks)
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for track in library.begin():
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uri_path_mapping[track.uri] = translator.local_track_uri_to_path(
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track.uri, media_dir)
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try:
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stat = os.stat(uri_path_mapping[track.uri])
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if int(stat.st_mtime) > track.last_modified:
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uris_to_update.add(track.uri)
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uris_in_library.add(track.uri)
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except OSError:
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logger.debug('Missing file %s', track.uri)
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uris_to_remove.add(track.uri)
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logger.info('Removing %d missing tracks.', len(uris_to_remove))
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for uri in uris_to_remove:
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library.remove(uri)
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logger.info('Checking %s for unknown tracks.', media_dir)
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for relpath in path.find_files(media_dir):
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uri = translator.path_to_local_track_uri(relpath)
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file_extension = os.path.splitext(relpath)[1]
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if file_extension.lower() in excluded_file_extensions:
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logger.debug('Skipped %s: File extension excluded.', uri)
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continue
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if uri not in uris_in_library:
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uris_to_update.add(uri)
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uri_path_mapping[uri] = os.path.join(media_dir, relpath)
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logger.info('Found %d unknown tracks.', len(uris_to_update))
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logger.info('Scanning...')
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uris_to_update = sorted(uris_to_update)[:args.limit]
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scanner = scan.Scanner(scan_timeout)
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progress = _Progress(flush_threshold, len(uris_to_update))
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for uri in uris_to_update:
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try:
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data = scanner.scan(path.path_to_uri(uri_path_mapping[uri]))
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track = scan.audio_data_to_track(data).copy(uri=uri)
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library.add(track)
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logger.debug('Added %s', track.uri)
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except exceptions.ScannerError as error:
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logger.warning('Failed %s: %s', uri, error)
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if progress.increment():
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progress.log()
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if library.flush():
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logger.debug('Progress flushed.')
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progress.log()
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library.close()
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logger.info('Done scanning.')
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return 0
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class _Progress(object):
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def __init__(self, batch_size, total):
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self.count = 0
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self.batch_size = batch_size
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self.total = total
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self.start = time.time()
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def increment(self):
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self.count += 1
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return self.count % self.batch_size == 0
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def log(self):
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duration = time.time() - self.start
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remainder = duration / self.count * (self.total - self.count)
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logger.info('Scanned %d of %d files in %ds, ~%ds left.',
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self.count, self.total, duration, remainder)
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