Source code for eyed3.id3.tag

# -*- coding: utf-8 -*-
################################################################################
#  Copyright (C) 2007-2012  Travis Shirk <travis@pobox.com>
#
#  This program 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 2 of the License, or
#  (at your option) any later version.
#
#  This program 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 os
import string
import shutil
import tempfile
from functools import partial
from codecs import ascii_encode

from ..utils import requireUnicode, chunkCopy, datePicker
from .. import core
from ..core import TXXX_ALBUM_TYPE, TXXX_ARTIST_ORIGIN, ALBUM_TYPE_IDS
from .. import Error
from . import (ID3_ANY_VERSION, ID3_V1, ID3_V1_0, ID3_V1_1,
               ID3_V2, ID3_V2_2, ID3_V2_3, ID3_V2_4, versionToString)
from . import DEFAULT_LANG
from . import Genre
from . import frames
from .headers import TagHeader, ExtendedTagHeader
from .. import compat
from ..compat import StringTypes, BytesType, unicode, UnicodeType, b

from ..utils.log import getLogger
log = getLogger(__name__)


[docs]class TagException(Error): pass
ID3_V1_COMMENT_DESC = u"ID3v1.x Comment" DEFAULT_PADDING = 256
[docs]class Tag(core.Tag): def __init__(self, **kwargs): self.clear() core.Tag.__init__(self, **kwargs)
[docs] def clear(self): '''Reset all tag data.''' # ID3 tag header self.header = TagHeader() # Optional extended header in v2 tags. self.extended_header = ExtendedTagHeader() # Contains the tag's frames. ID3v1 fields are read and converted # the the corresponding v2 frame. self.frame_set = frames.FrameSet() self._comments = CommentsAccessor(self.frame_set) self._images = ImagesAccessor(self.frame_set) self._lyrics = LyricsAccessor(self.frame_set) self._objects = ObjectsAccessor(self.frame_set) self._privates = PrivatesAccessor(self.frame_set) self._user_texts = UserTextsAccessor(self.frame_set) self._unique_file_ids = UniqueFileIdAccessor(self.frame_set) self._user_urls = UserUrlsAccessor(self.frame_set) self._chapters = ChaptersAccessor(self.frame_set) self._tocs = TocAccessor(self.frame_set) self._popularities = PopularitiesAccessor(self.frame_set) self.file_info = None
[docs] def parse(self, fileobj, version=ID3_ANY_VERSION): assert(fileobj) self.clear() version = version or ID3_ANY_VERSION close_file = False try: filename = fileobj.name except AttributeError: if type(fileobj) in StringTypes: filename = fileobj fileobj = open(filename, "rb") close_file = True else: raise ValueError("Invalid type: %s" % str(type(fileobj))) self.file_info = FileInfo(filename) try: tag_found = False padding = 0 # The & is for supporting the "meta" versions, any, etc. if version[0] & 2: tag_found, padding = self._loadV2Tag(fileobj) if not tag_found and version[0] & 1: tag_found, padding = self._loadV1Tag(fileobj) if tag_found: self.extended_header = None if tag_found and self.isV2(): self.file_info.tag_size = (TagHeader.SIZE + self.header.tag_size) if tag_found: self.file_info.tag_padding_size = padding finally: if close_file: fileobj.close() return tag_found
def _loadV2Tag(self, fp): '''Returns (tag_found, padding_len)''' padding = 0 # Look for a tag and if found load it. if not self.header.parse(fp): return (False, 0) # Read the extended header if present. if self.header.extended: self.extended_header.parse(fp, self.header.version) # Header is definitely there so at least one frame *must* follow. padding = self.frame_set.parse(fp, self.header, self.extended_header) log.debug("Tag contains %d bytes of padding." % padding) return (True, padding) def _loadV1Tag(self, fp): v1_enc = "latin1" # Seek to the end of the file where all v1x tags are written. # v1.x tags are 128 bytes min and max fp.seek(0, 2) if fp.tell() < 128: return (False, 0) fp.seek(-128, 2) tag_data = fp.read(128) if tag_data[0:3] != b"TAG": return (False, 0) log.debug("Located ID3 v1 tag") # v1.0 is implied until a v1.1 feature is recognized. self.version = ID3_V1_0 STRIP_CHARS = compat.b(string.whitespace) + b"\x00" title = tag_data[3:33].strip(STRIP_CHARS) log.debug("Tite: %s" % title) if title: self.title = unicode(title, v1_enc) artist = tag_data[33:63].strip(STRIP_CHARS) log.debug("Artist: %s" % artist) if artist: self.artist = unicode(artist, v1_enc) album = tag_data[63:93].strip(STRIP_CHARS) log.debug("Album: %s" % album) if album: self.album = unicode(album, v1_enc) year = tag_data[93:97].strip(STRIP_CHARS) log.debug("Year: %s" % year) try: if year and int(year): # Values here typically mean the year of release self.release_date = int(year) except ValueError: # Bogus year strings. log.warn("ID3v1.x tag contains invalid year: %s" % year) pass # Can't use STRIP_CHARS here, since the final byte is numeric comment = tag_data[97:127].rstrip(b"\x00") # Track numbers stuffed in the comment field is what makes v1.1 if comment: if (len(comment) >= 2 and # Python the slices (the chars), so this is really # comment[2] and comment[-1] comment[-2:-1] == b"\x00" and comment[-1:] != b"\x00"): log.debug("Track Num found, setting version to v1.1") self.version = ID3_V1_1 track = compat.byteOrd(comment[-1]) self.track_num = (track, None) log.debug("Track: " + str(track)) comment = comment[:-2].strip(STRIP_CHARS) # There may only have been a track # if comment: log.debug("Comment: %s" % comment) self.comments.set(unicode(comment, v1_enc), ID3_V1_COMMENT_DESC) genre = ord(tag_data[127:128]) log.debug("Genre ID: %d" % genre) try: self.genre = genre except ValueError as ex: log.warning(ex) self.genre = None return (True, 0) @property def version(self): return self.header.version @version.setter def version(self, v): self.header.version = v
[docs] def isV1(self): '''Test ID3 major version for v1.x''' return self.header.major_version == 1
[docs] def isV2(self): '''Test ID3 major version for v2.x''' return self.header.major_version == 2
@requireUnicode(2) def setTextFrame(self, fid, txt): fid = b(fid, ascii_encode) if not fid.startswith(b"T") or fid.startswith(b"TX"): raise ValueError("Invalid frame-id for text frame") if not txt and self.frame_set[fid]: del self.frame_set[fid] elif txt: self.frame_set.setTextFrame(fid, txt)
[docs] def getTextFrame(self, fid): fid = b(fid, ascii_encode) if not fid.startswith(b"T") or fid.startswith(b"TX"): raise ValueError("Invalid frame-id for text frame") f = self.frame_set[fid] return f[0].text if f else None
@requireUnicode(1) def _setArtist(self, val): self.setTextFrame(frames.ARTIST_FID, val) def _getArtist(self): return self.getTextFrame(frames.ARTIST_FID) @requireUnicode(1) def _setAlbumArtist(self, val): self.setTextFrame(frames.ALBUM_ARTIST_FID, val) def _getAlbumArtist(self): return self.getTextFrame(frames.ALBUM_ARTIST_FID) @requireUnicode(1) def _setAlbum(self, val): self.setTextFrame(frames.ALBUM_FID, val) def _getAlbum(self): return self.getTextFrame(frames.ALBUM_FID) @requireUnicode(1) def _setTitle(self, val): self.setTextFrame(frames.TITLE_FID, val) def _getTitle(self): return self.getTextFrame(frames.TITLE_FID) def _setTrackNum(self, val): self._setNum(frames.TRACKNUM_FID, val) def _getTrackNum(self): return self._splitNum(frames.TRACKNUM_FID) def _splitNum(self, fid): f = self.frame_set[fid] first, second = None, None if f and f[0].text: n = f[0].text.split('/') try: first = int(n[0]) second = int(n[1]) if len(n) == 2 else None except ValueError as ex: log.warning(str(ex)) return (first, second) def _setNum(self, fid, val): if type(val) is tuple: tn, tt = val elif type(val) is int: tn, tt = val, None elif val is None: tn, tt = None, None n = (tn, tt) if n[0] is None and n[1] is None: if self.frame_set[fid]: del self.frame_set[fid] return total_str = "" if n[1] is not None: if n[1] >= 0 and n[1] <= 9: total_str = "0" + str(n[1]) else: total_str = str(n[1]) t = n[0] if n[0] else 0 track_str = str(t) # Pad with zeros according to how large the total count is. if len(track_str) == 1: track_str = "0" + track_str if len(track_str) < len(total_str): track_str = ("0" * (len(total_str) - len(track_str))) + track_str final_str = "" if track_str and total_str: final_str = "%s/%s" % (track_str, total_str) elif track_str and not total_str: final_str = track_str self.frame_set.setTextFrame(fid, unicode(final_str)) @property def comments(self): return self._comments def _getBpm(self): from decimal import Decimal, ROUND_HALF_UP, InvalidOperation bpm = None if frames.BPM_FID in self.frame_set: bpm_str = self.frame_set[frames.BPM_FID][0].text or u"0" try: # Round floats since the spec says this is an integer. Python3 # changed how 'round' works, hence the using of decimal bpm = int(Decimal(bpm_str).quantize(1, ROUND_HALF_UP)) except (InvalidOperation, ValueError) as ex: log.warning(ex) return bpm def _setBpm(self, bpm): assert(bpm >= 0) self.setTextFrame(frames.BPM_FID, unicode(str(bpm))) bpm = property(_getBpm, _setBpm) @property def play_count(self): if frames.PLAYCOUNT_FID in self.frame_set: pc = self.frame_set[frames.PLAYCOUNT_FID][0] return pc.count else: return None @play_count.setter def play_count(self, count): if count is None: del self.frame_set[frames.PLAYCOUNT_FID] return if count < 0: raise ValueError("Invalid play count value: %d" % count) if self.frame_set[frames.PLAYCOUNT_FID]: pc = self.frame_set[frames.PLAYCOUNT_FID][0] pc.count = count else: self.frame_set[frames.PLAYCOUNT_FID] = \ frames.PlayCountFrame(count=count) def _getPublisher(self): if frames.PUBLISHER_FID in self.frame_set: pub = self.frame_set[frames.PUBLISHER_FID] return pub[0].text else: return None @requireUnicode(1) def _setPublisher(self, p): self.setTextFrame(frames.PUBLISHER_FID, p) publisher = property(_getPublisher, _setPublisher) @property def cd_id(self): if frames.CDID_FID in self.frame_set: return self.frame_set[frames.CDID_FID][0].toc else: return None @cd_id.setter def cd_id(self, toc): if len(toc) > 804: raise ValueError("CD identifier table of contents can be no " "greater than 804 bytes") if self.frame_set[frames.CDID_FID]: cdid = self.frame_set[frames.CDID_FID][0] cdid.toc = BytesType(toc) else: self.frame_set[frames.CDID_FID] = \ frames.MusicCDIdFrame(toc=toc) @property def images(self): return self._images def _getEncodingDate(self): return self._getDate(b"TDEN") def _setEncodingDate(self, date): self._setDate(b"TDEN", date) encoding_date = property(_getEncodingDate, _setEncodingDate) @property def best_release_date(self): '''This method tries its best to return a date of some sort, amongst alll the possible date frames. The order of preference for a release date is 1) date of original release 2) date of this versions release 3) the recording date. Or None is returned.''' import warnings warnings.warn("Use Tag.getBestDate() instead", DeprecationWarning, stacklevel=2) return (self.original_release_date or self.release_date or self.recording_date)
[docs] def getBestDate(self, prefer_recording_date=False): '''This method returns a date of some sort, amongst all the possible date frames. The order of preference is: 1) date of original release 2) date of this versions release 3) the recording date. Unless ``prefer_recording_date`` is ``True`` in which case the order is 3, 1, 2. ``None`` will be returned if no dates are available.''' return datePicker(self, prefer_recording_date)
def _getReleaseDate(self): return self._getDate(b"TDRL") if self.version == ID3_V2_4 \ else self._getV23OrignalReleaseDate() def _setReleaseDate(self, date): self._setDate(b"TDRL" if self.version == ID3_V2_4 else b"TORY", date) release_date = property(_getReleaseDate, _setReleaseDate) '''The date the audio was released. This is NOT the original date the work was released, instead it is more like the pressing or version of the release. Original release date is usually what is intended but many programs use this frame and/or don't distinguish between the two.''' def _getOrigReleaseDate(self): return self._getDate(b"TDOR") or self._getV23OrignalReleaseDate() def _setOrigReleaseDate(self, date): self._setDate(b"TDOR", date) original_release_date = property(_getOrigReleaseDate, _setOrigReleaseDate) '''The date the work was originally released.''' def _getRecordingDate(self): return self._getDate(b"TDRC") or self._getV23RecordingDate() def _setRecordingDate(self, date): if date is None: for fid in (b"TDRC", b"TYER", b"TDAT", b"TIME"): self._setDate(fid, None) elif self.version == ID3_V2_4: self._setDate(b"TDRC", date) else: self._setDate(b"TYER", unicode(date.year)) if None not in (date.month, date.day): date_str = u"%s%s" % (str(date.day).rjust(2, "0"), str(date.month).rjust(2, "0")) self._setDate(b"TDAT", date_str) if None not in (date.hour, date.minute): date_str = u"%s%s" % (str(date.hour).rjust(2, "0"), str(date.minute).rjust(2, "0")) self._setDate(b"TIME", date_str) recording_date = property(_getRecordingDate, _setRecordingDate) '''The date of the recording. Many applications use this for release date regardless of the fact that this value is rarely known, and release dates are more correct.''' def _getV23RecordingDate(self): # v2.3 TYER (yyyy), TDAT (DDMM), TIME (HHmm) date = None try: date_str = b"" if b"TYER" in self.frame_set: date_str = self.frame_set[b"TYER"][0].text.encode("latin1") date = core.Date.parse(date_str) if b"TDAT" in self.frame_set: text = self.frame_set[b"TDAT"][0].text.encode("latin1") date_str += b"-%s-%s" % (text[2:], text[:2]) date = core.Date.parse(date_str) if b"TIME" in self.frame_set: text = self.frame_set[b"TIME"][0].text.encode("latin1") date_str += b"T%s:%s" % (text[:2], text[2:]) date = core.Date.parse(date_str) except ValueError as ex: log.warning("Invalid v2.3 TYER, TDAT, or TIME frame: %s" % ex) return date def _getV23OrignalReleaseDate(self): date, date_str = None, None try: for fid in (b"XDOR", b"TORY"): # Prefering XDOR over TORY since it can contain full date. if fid in self.frame_set: date_str = self.frame_set[fid][0].text.encode("latin1") break if date_str: date = core.Date.parse(date_str) except ValueError as ex: log.warning("Invalid v2.3 TORY/XDOR frame: %s" % ex) return date def _getTaggingDate(self): return self._getDate(b"TDTG") def _setTaggingDate(self, date): self._setDate(b"TDTG", date) tagging_date = property(_getTaggingDate, _setTaggingDate) def _setDate(self, fid, date): assert(fid in frames.DATE_FIDS or fid in frames.DEPRECATED_DATE_FIDS) if date is None: try: del self.frame_set[fid] except KeyError: pass return # Special casing the conversion to DATE objects cuz TDAT and TIME won't if fid not in (b"TDAT", b"TIME"): # Convert to ISO format which is what FrameSet wants. date_type = type(date) if date_type is int: # The integer year date = core.Date(date) elif date_type in StringTypes: date = core.Date.parse(date) elif not isinstance(date, core.Date): raise TypeError("Invalid type: %s" % str(type(date))) date_text = unicode(str(date)) if fid in self.frame_set: self.frame_set[fid][0].date = date else: self.frame_set[fid] = frames.DateFrame(fid, date_text) def _getDate(self, fid): if fid in (b"TORY", b"XDOR"): return self._getV23OrignalReleaseDate() if fid in self.frame_set: if fid in (b"TYER", b"TDAT", b"TIME"): if fid == b"TYER": # Contain years only, date conversion can happen return core.Date(int(self.frame_set[fid][0].text)) else: return self.frame_set[fid][0].text else: return self.frame_set[fid][0].date else: return None @property def lyrics(self): return self._lyrics @property def disc_num(self): return self._splitNum(frames.DISCNUM_FID) @disc_num.setter def disc_num(self, val): self._setNum(frames.DISCNUM_FID, val) @property def objects(self): return self._objects @property def privates(self): return self._privates @property def popularities(self): return self._popularities def _getGenre(self, id3_std=True): f = self.frame_set[frames.GENRE_FID] if f and f[0].text: try: return Genre.parse(f[0].text, id3_std=id3_std) except ValueError: return None else: return None def _setGenre(self, g, id3_std=True): ''' Set the genre. Four types are accepted for the ``g`` argument. A Genre object, an acceptable (see Genre.parse) genre string, or an integer genre ID all will set the value. A value of None will remove the genre.''' if g is None: if self.frame_set[frames.GENRE_FID]: del self.frame_set[frames.GENRE_FID] return if isinstance(g, unicode): g = Genre.parse(g, id3_std=id3_std) elif isinstance(g, int): g = Genre(id=g) elif not isinstance(g, Genre): raise TypeError("Invalid genre data type: %s" % str(type(g))) self.frame_set.setTextFrame(frames.GENRE_FID, unicode(g)) genre = property(_getGenre, _setGenre) non_std_genre = property(partial(_getGenre, id3_std=False), partial(_setGenre, id3_std=False)) @property def user_text_frames(self): return self._user_texts def _setUrlFrame(self, fid, url): if fid not in frames.URL_FIDS: raise ValueError("Invalid URL frame-id") if self.frame_set[fid]: if not url: del self.frame_set[fid] else: self.frame_set[fid][0].url = url else: self.frame_set[fid] = frames.UrlFrame(fid, url) def _getUrlFrame(self, fid): if fid not in frames.URL_FIDS: raise ValueError("Invalid URL frame-id") f = self.frame_set[fid] return f[0].url if f else None @property def commercial_url(self): return self._getUrlFrame(frames.URL_COMMERCIAL_FID) @commercial_url.setter def commercial_url(self, url): self._setUrlFrame(frames.URL_COMMERCIAL_FID, url) @property def copyright_url(self): return self._getUrlFrame(frames.URL_COPYRIGHT_FID) @copyright_url.setter def copyright_url(self, url): self._setUrlFrame(frames.URL_COPYRIGHT_FID, url) @property def audio_file_url(self): return self._getUrlFrame(frames.URL_AUDIOFILE_FID) @audio_file_url.setter def audio_file_url(self, url): self._setUrlFrame(frames.URL_AUDIOFILE_FID, url) @property def audio_source_url(self): return self._getUrlFrame(frames.URL_AUDIOSRC_FID) @audio_source_url.setter def audio_source_url(self, url): self._setUrlFrame(frames.URL_AUDIOSRC_FID, url) @property def artist_url(self): return self._getUrlFrame(frames.URL_ARTIST_FID) @artist_url.setter def artist_url(self, url): self._setUrlFrame(frames.URL_ARTIST_FID, url) @property def internet_radio_url(self): return self._getUrlFrame(frames.URL_INET_RADIO_FID) @internet_radio_url.setter def internet_radio_url(self, url): self._setUrlFrame(frames.URL_INET_RADIO_FID, url) @property def payment_url(self): return self._getUrlFrame(frames.URL_PAYMENT_FID) @payment_url.setter def payment_url(self, url): self._setUrlFrame(frames.URL_PAYMENT_FID, url) @property def publisher_url(self): return self._getUrlFrame(frames.URL_PUBLISHER_FID) @publisher_url.setter def publisher_url(self, url): self._setUrlFrame(frames.URL_PUBLISHER_FID, url) @property def user_url_frames(self): return self._user_urls @property def unique_file_ids(self): return self._unique_file_ids @property def terms_of_use(self): if self.frame_set[frames.TOS_FID]: return self.frame_set[frames.TOS_FID][0].text @terms_of_use.setter def terms_of_use(self, tos): """Set the terms of use text. To specify a language (other than DEFAULT_LANG) code with the text pass a tuple: (text, lang) Language codes are 3 *bytes* of ascii data. """ if isinstance(tos, tuple): tos, lang = tos else: lang = DEFAULT_LANG if self.frame_set[frames.TOS_FID]: self.frame_set[frames.TOS_FID][0].text = tos self.frame_set[frames.TOS_FID][0].lang = lang else: self.frame_set[frames.TOS_FID] = frames.TermsOfUseFrame(text=tos, lang=lang) def _raiseIfReadonly(self): if self.read_only: raise RuntimeError("Tag is set read only.")
[docs] def save(self, filename=None, version=None, encoding=None, backup=False, preserve_file_time=False, max_padding=None): '''Save the tag. If ``filename`` is not give the value from the ``file_info`` member is used, or a ``TagException`` is raised. The ``version`` argument can be used to select an ID3 version other than the version read. ``Select text encoding with ``encoding`` or use the existing (or default) encoding. If ``backup`` is True the orignal file is preserved; likewise if ``preserve_file_time`` is True the fileĀ“s modification/access times are not updated. ''' self._raiseIfReadonly() if not (filename or self.file_info): raise TagException("No file") elif filename: self.file_info = FileInfo(filename) version = version if version else self.version if version == ID3_V2_2: raise NotImplementedError("Unable to write ID3 v2.2") self.version = version if backup and os.path.isfile(self.file_info.name): backup_name = "%s.%s" % (self.file_info.name, "orig") i = 1 while os.path.isfile(backup_name): backup_name = "%s.%s.%d" % (self.file_info.name, "orig", i) i += 1 shutil.copyfile(self.file_info.name, backup_name) if version[0] == 1: self._saveV1Tag(version) elif version[0] == 2: self._saveV2Tag(version, encoding, max_padding) else: assert(not "Version bug: %s" % str(version)) if preserve_file_time and None not in (self.file_info.atime, self.file_info.mtime): self.file_info.touch((self.file_info.atime, self.file_info.mtime)) else: self.file_info.initStatTimes()
def _saveV1Tag(self, version): self._raiseIfReadonly() assert(version[0] == 1) def pack(s, n): assert(type(s) is BytesType) return s.ljust(n, b'\x00')[:n] def encode(s): return s.encode("latin_1", "replace") # Build tag buffer. tag = b"TAG" tag += pack(encode(self.title) if self.title else b"", 30) tag += pack(encode(self.artist) if self.artist else b"", 30) tag += pack(encode(self.album) if self.album else b"", 30) release_date = self.getBestDate() year = unicode(release_date.year).encode("ascii") if release_date \ else b"" tag += pack(year, 4) cmt = "" for c in self.comments: if c.description == ID3_V1_COMMENT_DESC: cmt = c.text # We prefer this one over "" break elif c.description == u"": cmt = c.text # Keep searching in case we find the description eyeD3 uses. cmt = pack(encode(cmt), 30) if version != ID3_V1_0: track = self.track_num[0] if track is not None: cmt = cmt[0:28] + b"\x00" + compat.chr(int(track) & 0xff) tag += cmt if not self.genre or self.genre.id is None: genre = 12 # Other else: genre = self.genre.id tag += compat.chr(genre & 0xff) assert(len(tag) == 128) mode = "rb+" if os.path.isfile(self.file_info.name) else "w+b" with open(self.file_info.name, mode) as tag_file: # Write the tag over top an original or append it. try: tag_file.seek(-128, 2) if tag_file.read(3) == b"TAG": tag_file.seek(-128, 2) else: tag_file.seek(0, 2) except IOError: # File is smaller than 128 bytes. tag_file.seek(0, 2) tag_file.write(tag) tag_file.flush() def _render(self, version, curr_tag_size, max_padding_size): std_frames = [] non_std_frames = [] for f in self.frame_set.getAllFrames(): try: _, fversion, _ = frames.ID3_FRAMES[f.id] if fversion in (version, ID3_V2): std_frames.append(f) else: non_std_frames.append(f) except KeyError: # Not a standard frame (ID3_FRAMES) try: _, fversion, _ = frames.NONSTANDARD_ID3_FRAMES[f.id] # but is it one we can handle. if fversion in (version, ID3_V2): std_frames.append(f) else: non_std_frames.append(f) except KeyError: # Don't know anything about this pass it on for the error # check there. non_std_frames.append(f) if non_std_frames: # actually, they're not converted yet non_std_frames = self._convertFrames(std_frames, non_std_frames, version) # Render all frames first so the data size is known for the tag header. frame_data = b"" for f in std_frames + non_std_frames: frame_header = frames.FrameHeader(f.id, version) if f.header: frame_header.copyFlags(f.header) f.header = frame_header log.debug("Rendering frame: %s" % frame_header.id) raw_frame = f.render() log.debug("Rendered %d bytes" % len(raw_frame)) frame_data += raw_frame log.debug("Rendered %d total frame bytes" % len(frame_data)) # eyeD3 never writes unsync'd data self.header.unsync = False pending_size = TagHeader.SIZE + len(frame_data) if self.header.extended: # Using dummy data and padding, the actual size of this header # will be the same regardless, it's more about the flag bits tmp_ext_header_data = self.extended_header.render(version, b"\x00", 0) pending_size += len(tmp_ext_header_data) padding_size = 0 if pending_size > curr_tag_size: # current tag (minus padding) larger than the current (plus padding) padding_size = DEFAULT_PADDING rewrite_required = True else: padding_size = curr_tag_size - pending_size if max_padding_size is not None and padding_size > max_padding_size: padding_size = min(DEFAULT_PADDING, max_padding_size) rewrite_required = True else: rewrite_required = False assert(padding_size >= 0) log.debug("Using %d bytes of padding" % padding_size) # Extended header ext_header_data = b"" if self.header.extended: log.debug("Rendering extended header") ext_header_data += self.extended_header.render(self.header.version, frame_data, padding_size) # Render the tag header. total_size = pending_size + padding_size log.debug("Rendering %s tag header with size %d" % (versionToString(version), total_size - TagHeader.SIZE)) header_data = self.header.render(total_size - TagHeader.SIZE) # Assemble the entire tag. tag_data = (header_data + ext_header_data + frame_data) assert(len(tag_data) == (total_size - padding_size)) return (rewrite_required, tag_data, b"\x00" * padding_size) def _saveV2Tag(self, version, encoding, max_padding): self._raiseIfReadonly() assert(version[0] == 2 and version[1] != 2) log.debug("Rendering tag version: %s" % versionToString(version)) file_exists = os.path.exists(self.file_info.name) if encoding: # Any invalid encoding is going to get coersed to a valid value # when the frame is rendered. for f in self.frame_set.getAllFrames(): f.encoding = frames.stringToEncoding(encoding) curr_tag_size = 0 if file_exists: # We may be converting from 1.x to 2.x so we need to find any # current v2.x tag otherwise we're gonna hork the file. # This also resets all offsets, state, etc. and makes me feel safe. tmp_tag = Tag() if tmp_tag.parse(self.file_info.name, ID3_V2): log.debug("Found current v2.x tag:") curr_tag_size = tmp_tag.file_info.tag_size log.debug("Current tag size: %d" % curr_tag_size) rewrite_required, tag_data, padding = self._render(version, curr_tag_size, max_padding) log.debug("Writing %d bytes of tag data and %d bytes of " "padding" % (len(tag_data), len(padding))) if rewrite_required: # Open tmp file with tempfile.NamedTemporaryFile("wb", delete=False) \ as tmp_file: tmp_file.write(tag_data + padding) # Copy audio data in chunks with open(self.file_info.name, "rb") as tag_file: if curr_tag_size != 0: seek_point = curr_tag_size else: seek_point = 0 log.debug("Seeking to beginning of audio data, " "byte %d (%x)" % (seek_point, seek_point)) tag_file.seek(seek_point) chunkCopy(tag_file, tmp_file) tmp_file.flush() # Move tmp to orig. shutil.copyfile(tmp_file.name, self.file_info.name) os.unlink(tmp_file.name) else: with open(self.file_info.name, "r+b") as tag_file: tag_file.write(tag_data + padding) else: _, tag_data, padding = self._render(version, 0, None) with open(self.file_info.name, "wb") as tag_file: tag_file.write(tag_data + padding) log.debug("Tag write complete. Updating FileInfo state.") self.file_info.tag_size = len(tag_data) + len(padding) def _convertFrames(self, std_frames, convert_list, version): '''Maps frame imcompatibilies between ID3 v2.3 and v2.4. The items in ``std_frames`` need no conversion, but the list/frames may be edited if necessary (e.g. a converted frame replaces a frame in the list). The items in ``convert_list`` are the frames to convert and return. The ``version`` is the target ID3 version.''' from . import versionToString from .frames import (DATE_FIDS, DEPRECATED_DATE_FIDS, DateFrame, TextFrame) converted_frames = [] flist = list(convert_list) # Date frame conversions. date_frames = {} for f in flist: if version == ID3_V2_4: if f.id in DEPRECATED_DATE_FIDS: date_frames[f.id] = f else: if f.id in DATE_FIDS: date_frames[f.id] = f if date_frames: if version == ID3_V2_4: if b"TORY" in date_frames or b"XDOR" in date_frames: # XDOR -> TDOR (full date) # TORY -> TDOR (year only) date = self._getV23OrignalReleaseDate() if date: converted_frames.append(DateFrame(b"TDOR", date)) for fid in (b"TORY", b"XDOR"): if fid in flist: flist.remove(date_frames[fid]) del date_frames[fid] # TYER, TDAT, TIME -> TDRC if (b"TYER" in date_frames or b"TDAT" in date_frames or b"TIME" in date_frames): date = self._getV23RecordingDate() if date: converted_frames.append(DateFrame(b"TDRC", date)) for fid in [b"TYER", b"TDAT", b"TIME"]: if fid in date_frames: flist.remove(date_frames[fid]) del date_frames[fid] elif version == ID3_V2_3: if b"TDOR" in date_frames: date = date_frames[b"TDOR"].date if date: converted_frames.append(DateFrame(b"TORY", unicode(date.year))) flist.remove(date_frames[b"TDOR"]) del date_frames[b"TDOR"] if b"TDRC" in date_frames: date = date_frames[b"TDRC"].date if date: converted_frames.append(DateFrame(b"TYER", unicode(date.year))) if None not in (date.month, date.day): date_str = u"%s%s" %\ (str(date.day).rjust(2, "0"), str(date.month).rjust(2, "0")) converted_frames.append(TextFrame(b"TDAT", date_str)) if None not in (date.hour, date.minute): date_str = u"%s%s" %\ (str(date.hour).rjust(2, "0"), str(date.minute).rjust(2, "0")) converted_frames.append(TextFrame(b"TIME", date_str)) flist.remove(date_frames[b"TDRC"]) del date_frames[b"TDRC"] if b"TDRL" in date_frames: # TDRL -> XDOR date = date_frames[b"TDRL"].date if date: converted_frames.append(DateFrame(b"XDOR", str(date))) flist.remove(date_frames[b"TDRL"]) del date_frames[b"TDRL"] # All other date frames have no conversion for fid in date_frames: log.warning("%s frame being dropped due to conversion to %s" % (fid, versionToString(version))) flist.remove(date_frames[fid]) # Convert sort order frames 2.3 (XSO*) <-> 2.4 (TSO*) prefix = b"X" if version == ID3_V2_4 else b"T" fids = [prefix + suffix for suffix in [b"SOA", b"SOP", b"SOT"]] soframes = [f for f in flist if f.id in fids] for frame in soframes: frame.id = (b"X" if prefix == b"T" else b"T") + frame.id[1:] flist.remove(frame) converted_frames.append(frame) # TSIZ (v2.3) are completely deprecated, remove them if version == ID3_V2_4: flist = [f for f in flist if f.id != b"TSIZ"] # TSST (v2.4) --> TIT3 (2.3) if version == ID3_V2_3 and b"TSST" in [f.id for f in flist]: tsst_frame = [f for f in flist if f.id == b"TSST"][0] flist.remove(tsst_frame) tsst_frame = frames.UserTextFrame( description=u"Subtitle (converted)", text=tsst_frame.text) converted_frames.append(tsst_frame) # Raise an error for frames that could not be converted. if len(flist) != 0: unconverted = u", ".join([f.id.decode("ascii") for f in flist]) raise TagException("Unable to covert the following frames to " "version %s: %s" % (versionToString(version), unconverted)) # Some frames in converted_frames may replace/edit frames in std_frames. for cframe in converted_frames: for sframe in std_frames: if cframe.id == sframe.id: std_frames.remove(sframe) return converted_frames @staticmethod
[docs] def remove(filename, version=ID3_ANY_VERSION, preserve_file_time=False): retval = False if version[0] & ID3_V1[0]: # ID3 v1.x tag = Tag() with open(filename, "r+b") as tag_file: found = tag.parse(tag_file, ID3_V1) if found: tag_file.seek(-128, 2) log.debug("Removing ID3 v1.x Tag") tag_file.truncate() retval |= True if version[0] & ID3_V2[0]: tag = Tag() with open(filename, "rb") as tag_file: found = tag.parse(tag_file, ID3_V2) if found: log.debug("Removing ID3 %s tag" % versionToString(tag.version)) tag_file.seek(tag.file_info.tag_size) # Open tmp file with tempfile.NamedTemporaryFile("wb", delete=False) \ as tmp_file: chunkCopy(tag_file, tmp_file) # Move tmp to orig shutil.copyfile(tmp_file.name, filename) os.unlink(tmp_file.name) retval |= True if preserve_file_time and retval and None not in (tag.file_info.atime, tag.file_info.mtime): tag.file_info.touch((tag.file_info.atime, tag.file_info.mtime)) return retval
@property def chapters(self): return self._chapters @property def table_of_contents(self): return self._tocs @property def album_type(self): if TXXX_ALBUM_TYPE in self.user_text_frames: return self.user_text_frames.get(TXXX_ALBUM_TYPE).text else: return None @album_type.setter def album_type(self, t): if not t: self.user_text_frames.remove(TXXX_ALBUM_TYPE) elif t in ALBUM_TYPE_IDS: self.user_text_frames.set(t, TXXX_ALBUM_TYPE) else: raise ValueError("Invalid album_type: %s" % t) @property def artist_origin(self): '''Returns a 3-tuple: (city, state, country) Any may be ``None``.''' if TXXX_ARTIST_ORIGIN in self.user_text_frames: origin = self.user_text_frames.get(TXXX_ARTIST_ORIGIN).text vals = origin.split('\t') else: vals = [None] * 3 vals.extend([None] * (3 - len(vals))) vals = [None if not v else v for v in vals] assert(len(vals) == 3) return vals @artist_origin.setter def artist_origin(self, city, state, country): vals = (city, state, country) vals = [None if not v else v for v in vals] if vals == (None, None, None): self.user_text_frames.remove(TXXX_ARTIST_ORIGIN) else: assert(len(vals) == 3) self.user_text_frames.set('\t'.join(vals), TXXX_ARTIST_ORIGIN)
[docs] def frameiter(self, fids=None): '''A iterator for tag frames. If ``fids`` is passed it must be a list of frame IDs to filter and return.''' fids = fids or [] fids = [(b(f, ascii_encode) if isinstance(f, UnicodeType) else f) for f in fids] for f in self.frame_set.getAllFrames(): if not fids or f.id in fids: yield f
[docs]class FileInfo: ''' This class is for storing information about a parsed file. It containts info such as the filename, original tag size, and amount of padding; all of which can make rewriting faster. ''' def __init__(self, file_name, tagsz=0, tpadd=0): from .. import LOCAL_FS_ENCODING if type(file_name) is unicode: self.name = file_name else: try: self.name = unicode(file_name, LOCAL_FS_ENCODING) except UnicodeDecodeError: # Work around the local encoding not matching that of a mounted # filesystem log.warning(u"Mismatched file system encoding for file '%s'" % repr(file_name)) self.name = file_name self.tag_size = tagsz or 0 # This includes the padding byte count. self.tag_padding_size = tpadd or 0 self.initStatTimes()
[docs] def initStatTimes(self): try: s = os.stat(self.name) except OSError: self.atime, self.mtime = None, None else: self.atime, self.mtime = s.st_atime, s.st_mtime
[docs] def touch(self, times): '''times is a 2-tuple of (atime, mtime).''' os.utime(self.name, times) self.initStatTimes()
[docs]class AccessorBase(object): def __init__(self, fid, fs, match_func=None): self._fid = fid self._fs = fs self._match_func = match_func def __iter__(self): for f in self._fs[self._fid] or []: yield f def __len__(self): return len(self._fs[self._fid] or []) def __getitem__(self, i): frames = self._fs[self._fid] if not frames: raise IndexError("list index out of range") return frames[i]
[docs] def get(self, *args, **kwargs): for frame in self._fs[self._fid] or []: if self._match_func(frame, *args, **kwargs): return frame return None
[docs] def remove(self, *args, **kwargs): '''Returns the removed item or ``None`` if not found.''' fid_frames = self._fs[self._fid] or [] for frame in fid_frames: if self._match_func(frame, *args, **kwargs): fid_frames.remove(frame) return frame return None
[docs]class DltAccessor(AccessorBase): def __init__(self, FrameClass, fid, fs): def match_func(frame, description, lang=DEFAULT_LANG): return (frame.description == description and frame.lang == (lang if isinstance(lang, BytesType) else lang.encode("ascii"))) super(DltAccessor, self).__init__(fid, fs, match_func) self.FrameClass = FrameClass @requireUnicode(1, 2) def set(self, text, description=u"", lang=DEFAULT_LANG): lang = lang or DEFAULT_LANG for f in self._fs[self._fid] or []: if f.description == description and f.lang == lang: # Exists, update text f.text = text return f new_frame = self.FrameClass(description=description, lang=lang, text=text) self._fs[self._fid] = new_frame return new_frame @requireUnicode(1) def remove(self, description, lang=DEFAULT_LANG): return super(DltAccessor, self).remove(description, lang=lang or DEFAULT_LANG) @requireUnicode(1) def get(self, description, lang=DEFAULT_LANG): return super(DltAccessor, self).get(description, lang=lang or DEFAULT_LANG)
[docs]class CommentsAccessor(DltAccessor): def __init__(self, fs): super(CommentsAccessor, self).__init__(frames.CommentFrame, frames.COMMENT_FID, fs)
[docs]class LyricsAccessor(DltAccessor): def __init__(self, fs): super(LyricsAccessor, self).__init__(frames.LyricsFrame, frames.LYRICS_FID, fs)
[docs]class ImagesAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, description): return frame.description == description super(ImagesAccessor, self).__init__(frames.IMAGE_FID, fs, match_func) @requireUnicode("description") def set(self, type_, img_data, mime_type, description=u"", img_url=None): '''Add an image of ``type_`` (a type constant from ImageFrame). The ``img_data`` is either bytes or ``None``. In the latter case ``img_url`` MUST be the URL to the image. In this case ``mime_type`` is ignored and "-->" is used to signal this as a link and not data (per the ID3 spec).''' img_url = b(img_url) if img_url else None if not img_data and not img_url: raise ValueError("img_url MUST not be none when no image data") mime_type = mime_type if img_data else frames.ImageFrame.URL_MIME_TYPE mime_type = b(mime_type) images = self._fs[frames.IMAGE_FID] or [] for img in images: if img.description == description: # update if not img_data: img.image_url = img_url img.image_data = None img.mime_type = frames.ImageFrame.URL_MIME_TYPE else: img.image_url = None img.image_data = img_data img.mime_type = mime_type img.picture_type = type_ return img img_frame = frames.ImageFrame(description=description, image_data=img_data, image_url=img_url, mime_type=mime_type, picture_type=type_) self._fs[frames.IMAGE_FID] = img_frame return img_frame @requireUnicode(1) def remove(self, description): return super(ImagesAccessor, self).remove(description) @requireUnicode(1) def get(self, description): return super(ImagesAccessor, self).get(description)
[docs]class ObjectsAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, description): return frame.description == description super(ObjectsAccessor, self).__init__(frames.OBJECT_FID, fs, match_func) @requireUnicode("description", "filename") def set(self, data, mime_type, description=u"", filename=u""): objects = self._fs[frames.OBJECT_FID] or [] for obj in objects: if obj.description == description: # update obj.object_data = data obj.mime_type = mime_type obj.filename = filename return obj obj_frame = frames.ObjectFrame(description=description, filename=filename, object_data=data, mime_type=mime_type) self._fs[frames.OBJECT_FID] = obj_frame return obj_frame @requireUnicode(1) def remove(self, description): return super(ObjectsAccessor, self).remove(description) @requireUnicode(1) def get(self, description): return super(ObjectsAccessor, self).get(description)
[docs]class PrivatesAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, owner_id): return frame.owner_id == owner_id super(PrivatesAccessor, self).__init__(frames.PRIVATE_FID, fs, match_func)
[docs] def set(self, data, owner_id): priv_frames = self._fs[frames.PRIVATE_FID] or [] for f in priv_frames: if f.owner_id == owner_id: # update f.owner_data = data return f priv_frame = frames.PrivateFrame(owner_id=owner_id, owner_data=data) self._fs[frames.PRIVATE_FID] = priv_frame return priv_frame
[docs] def remove(self, owner_id): return super(PrivatesAccessor, self).remove(owner_id)
[docs] def get(self, owner_id): return super(PrivatesAccessor, self).get(owner_id)
[docs]class UserTextsAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, description): return frame.description == description super(UserTextsAccessor, self).__init__(frames.USERTEXT_FID, fs, match_func) @requireUnicode(1, "description") def set(self, text, description=u""): flist = self._fs[frames.USERTEXT_FID] or [] for utf in flist: if utf.description == description: # update utf.text = text return utf utf = frames.UserTextFrame(description=description, text=text) self._fs[frames.USERTEXT_FID] = utf return utf @requireUnicode(1) def remove(self, description): return super(UserTextsAccessor, self).remove(description) @requireUnicode(1) def get(self, description): return super(UserTextsAccessor, self).get(description) @requireUnicode(1) def __contains__(self, description): return bool(self.get(description))
[docs]class UniqueFileIdAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, owner_id): return frame.owner_id == owner_id super(UniqueFileIdAccessor, self).__init__(frames.UNIQUE_FILE_ID_FID, fs, match_func)
[docs] def set(self, data, owner_id): data, owner_id = b(data), b(owner_id) if len(data) > 64: raise TagException("UFID data must be 64 bytes or less") flist = self._fs[frames.UNIQUE_FILE_ID_FID] or [] for f in flist: if f.owner_id == owner_id: # update f.uniq_id = data return f uniq_id_frame = frames.UniqueFileIDFrame(owner_id=owner_id, uniq_id=data) self._fs[frames.UNIQUE_FILE_ID_FID] = uniq_id_frame return uniq_id_frame
[docs] def remove(self, owner_id): owner_id = b(owner_id) return super(UniqueFileIdAccessor, self).remove(owner_id)
[docs] def get(self, owner_id): owner_id = b(owner_id) return super(UniqueFileIdAccessor, self).get(owner_id)
[docs]class UserUrlsAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, description): return frame.description == description super(UserUrlsAccessor, self).__init__(frames.USERURL_FID, fs, match_func) @requireUnicode("description") def set(self, url, description=u""): flist = self._fs[frames.USERURL_FID] or [] for uuf in flist: if uuf.description == description: # update uuf.url = url return uuf uuf = frames.UserUrlFrame(description=description, url=url) self._fs[frames.USERURL_FID] = uuf return uuf @requireUnicode(1) def remove(self, description): return super(UserUrlsAccessor, self).remove(description) @requireUnicode(1) def get(self, description): return super(UserUrlsAccessor, self).get(description)
[docs]class PopularitiesAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, email): return frame.email == email super(PopularitiesAccessor, self).__init__(frames.POPULARITY_FID, fs, match_func)
[docs] def set(self, email, rating, play_count): flist = self._fs[frames.POPULARITY_FID] or [] for popm in flist: if popm.email == email: # update popm.rating = rating popm.count = play_count return popm popm = frames.PopularityFrame(email=email, rating=rating, count=play_count) self._fs[frames.POPULARITY_FID] = popm return popm
[docs] def remove(self, email): return super(PopularitiesAccessor, self).remove(email)
[docs] def get(self, email): return super(PopularitiesAccessor, self).get(email)
[docs]class ChaptersAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, element_id): return frame.element_id == element_id super(ChaptersAccessor, self).__init__(frames.CHAPTER_FID, fs, match_func)
[docs] def set(self, element_id, times, offsets=(None, None), sub_frames=None): flist = self._fs[frames.CHAPTER_FID] or [] for chap in flist: if chap.element_id == element_id: # update chap.times, chap.offsets = times, offsets if sub_frames: chap.sub_frames = sub_frames return chap chap = frames.ChapterFrame(element_id=element_id, times=times, offsets=offsets, sub_frames=sub_frames) self._fs[frames.CHAPTER_FID] = chap return chap
[docs] def remove(self, element_id): return super(ChaptersAccessor, self).remove(element_id)
[docs] def get(self, element_id): return super(ChaptersAccessor, self).get(element_id)
def __getitem__(self, elem_id): '''Overiding the index based __getitem__ for one indexed with chapter element IDs. These are stored in the tag's table of contents frames.''' for chapter in (self._fs[frames.CHAPTER_FID] or []): if chapter.element_id == elem_id: return chapter raise IndexError("chapter '%s' not found" % elem_id)
[docs]class TocAccessor(AccessorBase): def __init__(self, fs): def match_func(frame, element_id): return frame.element_id == element_id super(TocAccessor, self).__init__(frames.TOC_FID, fs, match_func) def __iter__(self): tocs = list(self._fs[self._fid] or []) for toc_frame in tocs: # Find and put top level at the front of the list if toc_frame.toplevel: tocs.remove(toc_frame) tocs.insert(0, toc_frame) break for toc in tocs: yield toc @requireUnicode("description") def set(self, element_id, toplevel=False, ordered=True, child_ids=None, description=u""): flist = self._fs[frames.TOC_FID] or [] # Enforce one top-level if toplevel: for toc in flist: if toc.toplevel: raise ValueError("There may only be one top-level " "table of contents. Toc '%s' is current " "top-level." % toc.element_id) for toc in flist: if toc.element_id == element_id: # update toc.toplevel = toplevel toc.ordered = ordered toc.child_ids = child_ids toc.description = description return toc toc = frames.TocFrame(element_id=element_id, toplevel=toplevel, ordered=ordered, child_ids=child_ids, description=description) self._fs[frames.TOC_FID] = toc return toc
[docs] def remove(self, element_id): return super(TocAccessor, self).remove(element_id)
[docs] def get(self, element_id): return super(TocAccessor, self).get(element_id)
def __getitem__(self, elem_id): '''Overiding the index based __getitem__ for one indexed with table of contents element IDs.''' for toc in (self._fs[frames.TOC_FID] or []): if toc.element_id == elem_id: return toc raise IndexError("toc '%s' not found" % elem_id)
[docs]class TagTemplate(string.Template): idpattern = r'[_a-z][_a-z0-9:]*' def __init__(self, pattern, path_friendly=True, dotted_dates=False): super(TagTemplate, self).__init__(pattern) self._path_friendly = path_friendly self._dotted_dates = dotted_dates
[docs] def substitute(self, tag, zeropad=True): mapping = self._makeMapping(tag, zeropad) # Helper function for .sub() def convert(mo): named = mo.group('named') if named is not None: try: if type(mapping[named]) is tuple: func, args = mapping[named][0], mapping[named][1:] return u'%s' % func(tag, named, *args) # We use this idiom instead of str() because the latter # will fail if val is a Unicode containing non-ASCII return u'%s' % (mapping[named],) except KeyError: return self.delimiter + named braced = mo.group('braced') if braced is not None: try: if type(mapping[braced]) is tuple: func, args = mapping[braced][0], mapping[braced][1:] return u'%s' % func(tag, braced, *args) return u'%s' % (mapping[braced],) except KeyError: return self.delimiter + '{' + braced + '}' if mo.group('escaped') is not None: return self.delimiter if mo.group('invalid') is not None: return self.delimiter raise ValueError('Unrecognized named group in pattern', self.pattern) name = self.pattern.sub(convert, self.template) return name.replace('/', '-') if self._path_friendly else name
safe_substitute = substitute def _dates(self, tag, param): if param.startswith("release_"): date = tag.release_date elif param.startswith("recording_"): date = tag.recording_date elif param.startswith("original_release_"): date = tag.original_release_date else: date = tag.getBestDate( prefer_recording_date=":prefer_recording" in param) if date and param.endswith(":year"): dstr = unicode(date.year) elif date: dstr = unicode(date) else: dstr = u"" if self._dotted_dates: dstr = dstr.replace('-', '.') return dstr def _nums(self, num_tuple, param, zeropad): nn, nt = ((unicode(n) if n else None) for n in num_tuple) if zeropad: if nt: nt = nt.rjust(2, "0") nn = nn.rjust(len(nt) if nt else 2, "0") if param.endswith(":num"): return nn elif param.endswith(":total"): return nt else: raise ValueError("Unknown template param: %s" % param) def _track(self, tag, param, zeropad): return self._nums(tag.track_num, param, zeropad) def _disc(self, tag, param, zeropad): return self._nums(tag.disc_num, param, zeropad) def _file(self, tag, param): assert(param.startswith("file")) if param.endswith(":ext"): return os.path.splitext(tag.file_info.name)[1][1:] else: return tag.file_info.name def _makeMapping(self, tag, zeropad): return {"artist": tag.artist if tag else None, "album_artist": tag.album_artist if tag else None, "album": tag.album if tag else None, "title": tag.title if tag else None, "track:num": (self._track, zeropad) if tag else None, "track:total": (self._track, zeropad) if tag else None, "release_date": (self._dates,) if tag else None, "release_date:year": (self._dates,) if tag else None, "recording_date": (self._dates,) if tag else None, "recording_date:year": (self._dates,) if tag else None, "original_release_date": (self._dates,) if tag else None, "original_release_date:year": (self._dates,) if tag else None, "best_date": (self._dates,) if tag else None, "best_date:year": (self._dates,) if tag else None, "best_date:prefer_recording": (self._dates,) if tag else None, "best_date:prefer_release": (self._dates,) if tag else None, "best_date:prefer_recording:year": (self._dates,) if tag else None, "best_date:prefer_release:year": (self._dates,) if tag else None, "file": (self._file,) if tag else None, "file:ext": (self._file,) if tag else None, "disc:num": (self._disc, zeropad) if tag else None, "disc:total": (self._disc, zeropad) if tag else None, }