+
+def get_dynamic_path(media, filename, ext=None, maxlen=100):
+ from slughifi import slughifi
+
+ # how to put related book's slug here?
+ if not ext:
+ # BookMedia case
+ ext = media.formats[media.type].ext
+ if media is None or not media.name:
+ name = slughifi(filename.split(".")[0])
+ else:
+ name = slughifi(media.name)
+ return 'book/%s/%s.%s' % (ext, name[:maxlen-len('book/%s/.%s' % (ext, ext))-4], ext)
+
+
+# TODO: why is this hard-coded ?
+def book_upload_path(ext=None, maxlen=100):
+ return lambda *args: get_dynamic_path(*args, ext=ext, maxlen=maxlen)
+
+
+def customizations_hash(customizations):
+ customizations.sort()
+ return hash(tuple(customizations))
+
+
+def get_customized_pdf_path(book, customizations):
+ """
+ Returns a MEDIA_ROOT relative path for a customized pdf. The name will contain a hash of customization options.
+ """
+ h = customizations_hash(customizations)
+ pdf_name = '%s-custom-%s' % (book.slug, h)
+ pdf_file = get_dynamic_path(None, pdf_name, ext='pdf')
+
+ return pdf_file
+
+
+def get_existing_customized_pdf(book):
+ """
+ Returns a list of paths to generated customized pdf of a book
+ """
+ pdf_glob = '%s-custom-' % (book.slug,)
+ pdf_glob = get_dynamic_path(None, pdf_glob, ext='pdf')
+ pdf_glob = re.sub(r"[.]([a-z0-9]+)$", "*.\\1", pdf_glob)
+ return glob(path.join(settings.MEDIA_ROOT, pdf_glob))
+
+
+class BookMedia(models.Model):
+ FileFormat = namedtuple("FileFormat", "name ext")
+ formats = SortedDict([
+ ('mp3', FileFormat(name='MP3', ext='mp3')),
+ ('ogg', FileFormat(name='Ogg Vorbis', ext='ogg')),
+ ('daisy', FileFormat(name='DAISY', ext='daisy.zip')),
+ ])
+ format_choices = [(k, _('%s file') % t.name)
+ for k, t in formats.items()]
+
+ type = models.CharField(_('type'), choices=format_choices, max_length="100")
+ name = models.CharField(_('name'), max_length="100")
+ file = OverwritingFileField(_('file'), upload_to=book_upload_path())
+ uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False)
+ extra_info = JSONField(_('extra information'), default='{}', editable=False)
+ book = models.ForeignKey('Book', related_name='media')
+ source_sha1 = models.CharField(null=True, blank=True, max_length=40, editable=False)
+
+ def __unicode__(self):
+ return "%s (%s)" % (self.name, self.file.name.split("/")[-1])
+
+ class Meta:
+ ordering = ('type', 'name')
+ verbose_name = _('book media')
+ verbose_name_plural = _('book media')
+
+ def save(self, *args, **kwargs):
+ from slughifi import slughifi
+ from catalogue.utils import ExistingFile, remove_zip
+
+ try:
+ old = BookMedia.objects.get(pk=self.pk)
+ except BookMedia.DoesNotExist, e:
+ old = None
+ else:
+ # if name changed, change the file name, too
+ if slughifi(self.name) != slughifi(old.name):
+ self.file.save(None, ExistingFile(self.file.path), save=False, leave=True)
+
+ super(BookMedia, self).save(*args, **kwargs)
+
+ # remove the zip package for book with modified media
+ if old:
+ remove_zip("%s_%s" % (old.book.slug, old.type))
+ remove_zip("%s_%s" % (self.book.slug, self.type))
+
+ extra_info = self.get_extra_info_value()
+ extra_info.update(self.read_meta())
+ self.set_extra_info_value(extra_info)
+ self.source_sha1 = self.read_source_sha1(self.file.path, self.type)
+ return super(BookMedia, self).save(*args, **kwargs)
+
+ def read_meta(self):
+ """
+ Reads some metadata from the audiobook.
+ """
+ import mutagen
+ from mutagen import id3
+
+ artist_name = director_name = project = funded_by = ''
+ if self.type == 'mp3':
+ try:
+ audio = id3.ID3(self.file.path)
+ artist_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE1'))
+ director_name = ', '.join(', '.join(tag.text) for tag in audio.getall('TPE3'))
+ project = ", ".join([t.data for t in audio.getall('PRIV')
+ if t.owner=='wolnelektury.pl?project'])
+ funded_by = ", ".join([t.data for t in audio.getall('PRIV')
+ if t.owner=='wolnelektury.pl?funded_by'])
+ except:
+ pass
+ elif self.type == 'ogg':
+ try:
+ audio = mutagen.File(self.file.path)
+ artist_name = ', '.join(audio.get('artist', []))
+ director_name = ', '.join(audio.get('conductor', []))
+ project = ", ".join(audio.get('project', []))
+ funded_by = ", ".join(audio.get('funded_by', []))
+ except:
+ pass
+ else:
+ return {}
+ return {'artist_name': artist_name, 'director_name': director_name,
+ 'project': project, 'funded_by': funded_by}
+
+ @staticmethod
+ def read_source_sha1(filepath, filetype):
+ """
+ Reads source file SHA1 from audiobok metadata.
+ """
+ import mutagen
+ from mutagen import id3
+
+ if filetype == 'mp3':
+ try:
+ audio = id3.ID3(filepath)
+ return [t.data for t in audio.getall('PRIV')
+ if t.owner=='wolnelektury.pl?flac_sha1'][0]
+ except:
+ return None
+ elif filetype == 'ogg':
+ try:
+ audio = mutagen.File(filepath)
+ return audio.get('flac_sha1', [None])[0]
+ except:
+ return None
+ else:
+ return None
fnp / wolnelektury.git / blobdiff