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prittag.py
executable file
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prittag.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#############################################################################
# prittag - a tool for tagging mp3, ogg and aac files #
# #
# Copyright (c) 2010 Nils Mehrtens #
# #
# prittag is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License #
# as published by the Free Software Foundation; #
# either version 3 of the License, or (at your option) any later version. #
# prittag is distributed in the hope that it will be useful, but #
# WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. #
# See the GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, see <http://www.gnu.org/licenses/>. #
#############################################################################
import sys
import os
import base64
import string
import re
import traceback
from xml.etree import ElementTree
from mutagen.mp3 import MP3
from mutagen.oggvorbis import OggVorbis
from mutagen.mp4 import MP4, MP4Cover
import mutagen.id3 as id3
def parse_xml(path):
tags = {}
disable_string_stripping_globally = False
try:
with open(path, 'r') as f:
data = f.read()
except:
print 'failed to read %s' % str(path)
sys.exit(1)
try:
xml = ElementTree.XML(data)
except:
print 'parsing XML failed!'
traceback.print_exc()
sys.exit(1)
if 'string_stripping' in xml.keys():
if xml.get('string_stripping') in ['0', 'false', 'False']:
disable_string_stripping_globally = True
for child in xml.getchildren():
key = str(child.tag)
value = unicode(child.text)
if disable_string_stripping_globally:
if 'string_stripping' in child.keys():
if child.get('string_stripping') in ['1', 'true', 'True']:
value = strip_string(value)
else:
if 'string_stripping' in child.keys():
if child.get('string_stripping') not in ['0', 'false', 'False']:
value = strip_string(value)
else:
value = strip_string(value)
tags[key] = value
if len(tags) < len(xml.getchildren()):
print "Error: there are duplicate tags!"
sys.exit(1)
for tag in tags:
bad = False
if tag in ['track', 'number-of-tracks', 'disc', 'number-of-discs']:
value = tags[tag]
try:
value = int(value)
except:
bad = True
if value < 0:
bad = True
if bad:
print 'Bad value in <%s>: "%s" is not a positive integer!' % (str(tag),
str(value))
sys.exit(1)
return tags
def strip_string(string):
if len(string.splitlines()) > 1:
new_string = '\n'.join([i.strip() for i in string.splitlines()])
new_string = new_string[1:] #remove at the beginning of the string
if string[len(string)-1] != '\n':
new_string = new_string[:len(new_string)-1]
#remove \n at the end of the string if wasn't present before
return new_string
else:
return string.strip()
def tag_file(path, tags):
file_type = get_file_type(path)
if file_type in ['ogg', 'oga']:
write_tags_to_ogg(path, tags)
elif file_type == 'mp3':
write_tags_to_mp3(path, tags)
elif file_type in ['mp4', 'm4a', 'aac']:
write_tags_to_mp4(path, tags)
else:
raise TypeError("%s is neither a mp3 nor an ogg nor a mp4 file" % path)
def get_file_type(path):
ext = os.path.splitext(path)[1]
ext = string.replace(ext, '.', '')
ext = ext.lower()
return ext
def write_tags_to_ogg(path, tags):
audio = OggVorbis(path)
for dest, source in [['TITLE', 'title'], ['COMPOSER', 'composer'],
['ALBUM', 'album'], ['DATE', 'date'],
['ARTIST', 'artist'], ['GENRE', 'genre'],
['ALBUMARTIST', 'album-artist'],
['TRACKNUMBER', 'track'],
['TRACKTOTAL', 'number-of-tracks'], ['DISCNUMBER',
'disc'], ['COMMENT', 'comment']]:
if source in tags:
audio[dest] = tags[source]
if 'cover' in tags:
audio['coverartmime'] = 'image/jpeg'
audio['coverartdescription'] = 'Cover'
audio['coverarttype'] = '3'
audio['coverart'] = get_ogg_coverart(tags['cover'])
audio.save()
def get_ogg_coverart(path):
with open(path, 'rb') as f:
data = f.read()
data = base64.b64encode(data)
return data
def write_tags_to_mp3(path, tags):
audio = MP3(path)
for i, tag in [['title', 'TIT2'], ['artist', 'TPE1'], ['album', 'TALB'],
['date', 'TDRC'], ['composer', 'TCOM'], ['genre', 'TCON'],
['lyrics', 'USLT'], ['album-artist', 'TPE2'],
['disc', 'TPOS'], ['comment', 'COMM']]:
if i in tags:
if tag == 'USLT':
tag = id3.Frames[tag](encoding=3, text=tags[i], desc='', lang='eng')
audio[tag.HashKey] = tag
elif tag == 'COMM':
tag = id3.Frames[tag](encoding=3, text=tags[i], lang='eng')
audio[tag.HashKey] = tag
else:
tag = id3.Frames[tag](encoding=3, text=tags[i])
audio[tag.HashKey] = tag
if 'track' in tags:
if 'number-of-tracks' in tags:
num_tracks = tags['number-of-tracks']
else:
num_tracks = 0
track_num = "%d/%d" % (int(tags['track']), int(num_tracks))
tag = id3.Frames['TRCK'](encoding=3, text=track_num)
audio[tag.HashKey] = tag
if 'cover' in tags:
image = get_mp3_coverart(tags['cover'])
image = id3.APIC(3, 'image/jpeg', 3, 'Cover', image)
audio[image.HashKey] = image
audio.save()
def get_mp3_coverart(path):
with open(path, 'rb') as f:
data = f.read()
return str(data)
def write_tags_to_mp4(path, tags):
audio = MP4(path)
for dest, source in [['\xa9nam', 'title'], ['\xa9wrt', 'composer'],
['\xa9alb', 'album'], ['\xa9day','date'],
['\xa9ART', 'artist'], ['\xa9gen', 'genre'],
['\xa9lyr', 'lyrics'], ['aART', 'album-artist'],
['\xa9cmt', 'comment']]:
if source in tags:
audio[dest] = [tags[source]]
if 'track' in tags:
if 'number-of-tracks' in tags:
num_tracks = int(tags['number-of-tracks'])
else:
num_tracks = 0
audio['trkn'] = [(int(tags['track']), num_tracks)]
if 'disc' in tags:
if 'number-of-discs' in tags:
num_disks = int(tags['number-of-discs'])
else:
num_disks = 0
audio['disk'] = [(int(tags['disc']), num_disks)]
if 'cover' in tags:
audio['covr'] = [get_mp4_coverart(tags['cover'])]
audio.save()
def get_mp4_coverart(path):
with open(path, 'rb') as f:
data = f.read()
cover = MP4Cover(data)
return cover
if __name__ == "__main__":
print '''prittag Copyright (C) 2011 Nils Mehrtens
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; see http://www.gnu.org/licenses/gpl.html for details.
'''
if len(sys.argv) < 3:
print 'usage: %s <xml file with tags> <file to tag> [<file to tag> ...]' % sys.argv[0]
sys.exit(1)
else:
args = sys.argv[1:]
for path in args:
if not os.path.exists(path):
print "%s doesn't exist." % path
sys.exit(1)
elif not os.path.isfile(path):
print "%s is not a file." % path
sys.exit(1)
config = args[0]
files = args[1:]
tags = parse_xml(config)
for file in files:
print "Tagging %s ..." % file
tag_file(file, tags)