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import glob |
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import logging |
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import os |
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import re |
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from collections import defaultdict |
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import click |
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from mutagen.id3 import ID3, TALB, TDRC, TIT2, TPE1, TPE2, TRCK |
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from music_album_creation.tracks_parsing import StringParser |
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# The main notable classes in mutagen are FileType, StreamInfo, Tags, Metadata and for error handling the MutagenError exception. |
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logger = logging.getLogger(__name__) |
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class MetadataDealerType(type): |
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@staticmethod |
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def __parse_year(year): |
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if year == '': |
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return '' |
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c = re.match(r'0*(\d+)', year) |
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if not c: |
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raise InvalidInputYearError("Input year tag '{}' is invalid".format(year)) |
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return c.group(1) |
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def __new__(mcs, name, bases, attributes): |
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x = super().__new__(mcs, name, bases, attributes) |
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x._filters = defaultdict(lambda: lambda y: y, track_number=lambda y: mcs.__parse_year(y)) |
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return x |
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class MetadataDealer(metaclass=MetadataDealerType): |
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############# |
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# simply add keys and constructor pairs to enrich the support of the API for writting tags/frames to audio files |
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# you can use the cls._filters to add a new post processing filter as shown in MetadataDealerType constructor above |
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_d = {'artist': TPE1, # 4.2.1 TPE1 [#TPE1 Lead performer(s)/Soloist(s)] ; taken from http://id3.org/id3v2.3.0 |
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# in clementine temrs, it affects the 'Artist' tab but not the 'Album artist' |
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'album_artist': TPE2, # 4.2.1 TPE2 [#TPE2 Band/orchestra/accompaniment] |
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# in clementine terms, it affects the 'Artist' tab but not the 'Album artist' |
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'album': TALB, # 4.2.1 TALB [#TALB Album/Movie/Show title] |
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'year': TDRC # TDRC (recording time) consolidates TDAT (date), TIME (time), TRDA (recording dates), and TYER (year). |
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} |
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# supported metadata to try and infer automatically |
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_auto_data = [('track_number', TRCK), # 4.2.1 TRCK [#TRCK Track number/Position in set] |
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('track_name', TIT2)] # 4.2.1 TIT2 [#TIT2 Title/songname/content description] |
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_all = dict(_d, **dict(_auto_data)) |
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# reg = re.compile(r'(?:(\d{1,2})(?:[ \t]*[\-\.][ \t]*|[ \t]+)|^)?([\w\'\(\) ’]*[\w)])\.mp3$') # use to parse track file names like "1. Loyal to the Pack.mp3" |
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@classmethod |
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def set_album_metadata(cls, album_directory, track_number=True, track_name=True, artist='', album_artist='', album='', year='', verbose=False): |
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cls._write_metadata(album_directory, track_number=track_number, track_name=track_name, artist=artist, album_artist=album_artist, album=album, year=str(year)) |
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@classmethod |
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def _write_metadata(cls, album_directory, **kwargs): |
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files = glob.glob('{}/*.mp3'.format(album_directory)) |
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logger.info("Files selected: [{}]".format(', '.join(map(os.path.basename, files)))) |
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for file in files: |
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cls.write_metadata(file, **dict(cls._filter_auto_inferred(StringParser.parse_track_number_n_name(file), **kwargs), |
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**{k: kwargs.get(k, '') for k in cls._d.keys()})) |
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@classmethod |
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def write_metadata(cls, file, **kwargs): |
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if not all(map(lambda x: x[0] in cls._all.keys(), kwargs.items())): |
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raise RuntimeError("Some of the input keys [{}] used to request the addition of metadata, do not correspond" |
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" to a tag/frame of the supported [{}]".format(', '.join(kwargs.keys()), ' '.join(cls._d))) |
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audio = ID3(file) |
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for k, v in kwargs.items(): |
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if bool(v): |
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audio.add(cls._all[k](encoding=3, text=u'{}'.format(cls._filters[k](v)))) |
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logger.info("Track '{}'; set {}: {}={}".format(file, k, cls._all[k].__name__, cls._filters[k](v))) |
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audio.save() |
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@classmethod |
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def _filter_auto_inferred(cls, d, **kwargs): |
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"""Given a dictionary (like the one outputted by _infer_track_number_n_name), deletes entries unless it finds them declared in kwargs as key_name=True""" |
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for k in cls._auto_data: |
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if not kwargs.get(k, False) and k in d: |
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del d[k] |
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return d |
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class InvalidInputYearError(Exception): pass |
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@click.command() |
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@click.option('--album-dir', required=True, help="The directory where a music album resides. Currently only mp3 " |
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"files are supported as contents of the directory. Namely only " |
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"such files will be apprehended as tracks of the album.") |
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@click.option('--track_name/--no-track_name', default=True, show_default=True, help='Whether to extract the track names from the mp3 files and write them as metadata correspondingly.') |
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@click.option('--track_number/--no-track_number', default=True, show_default=True, help='Whether to extract the track numbers from the mp3 files and write them as metadata correspondingly.') |
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@click.option('--artist', '-a', help="If given, then value shall be used as the TPE1 tag: 'Lead performer(s)/Soloist(s)'. In the music player 'clementine' it corresponds to the 'Artist' column.") |
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@click.option('--album_artist', '-aa', help="If given, then value shall be used as the TPE2 tag: 'Band/orchestra/accompaniment'. In the music player 'clementine' it corresponds to the 'Album artist' column.") |
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@click.option('--album', '-al', help="If given, then value shall be used as the TALB tag: 'Album/Movie/Show title'. In the music player 'clementine' it corresponds to the 'Album' column.") |
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@click.option('--year', 'y', help="If given, then value shall be used as the TDRC tag: 'Recoring time'. In the music player 'clementine' it corresponds to the 'Year' column.") |
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def main(album_dir, track_name, track_number, artist, album_artist, album, year): |
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md = MetadataDealer() |
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md.set_album_metadata(album_dir, track_number=track_number, track_name=track_name, artist=artist, album_artist=album_artist, album=album, year=year, verbose=True) |
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if __name__ == '__main__': |
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main() |
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boromir674 /
music-album-creator
