X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/ea8925059c81175c3a432a006779764d65308ad8..e64b5092d8c302b0288ba1501c0283961a160834:/apps/catalogue/models.py?ds=sidebyside diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index a7e04f1a2..eb55b985d 100644 --- a/apps/catalogue/models.py +++ b/apps/catalogue/models.py @@ -17,7 +17,7 @@ from newtagging.models import TagBase, tags_updated from newtagging import managers from catalogue.fields import JSONField -from librarian import html, dcparser +from librarian import dcparser, html, epub, NoDublinCore from mutagen import id3 @@ -44,7 +44,7 @@ class TagSubcategoryManager(models.Manager): class Tag(TagBase): name = models.CharField(_('name'), max_length=50, db_index=True) slug = models.SlugField(_('slug'), max_length=120, db_index=True) - sort_key = models.SlugField(_('sort key'), max_length=120, db_index=True) + sort_key = models.CharField(_('sort key'), max_length=120, db_index=True) category = models.CharField(_('category'), max_length=50, blank=False, null=False, db_index=True, choices=TAG_CATEGORIES) description = models.TextField(_('description'), blank=True) @@ -169,7 +169,7 @@ class Book(models.Model): title = models.CharField(_('title'), max_length=120) slug = models.SlugField(_('slug'), max_length=120, unique=True, db_index=True) description = models.TextField(_('description'), blank=True) - created_at = models.DateTimeField(_('creation date'), auto_now=True) + created_at = models.DateTimeField(_('creation date'), auto_now_add=True) _short_html = models.TextField(_('short HTML'), editable=False) parent_number = models.IntegerField(_('parent number'), default=0) extra_info = JSONField(_('extra information')) @@ -186,6 +186,7 @@ class Book(models.Model): txt_file = models.FileField(_('TXT file'), upload_to=book_upload_path('txt'), blank=True) mp3_file = models.FileField(_('MP3 file'), upload_to=book_upload_path('mp3'), blank=True) ogg_file = models.FileField(_('OGG file'), upload_to=book_upload_path('ogg'), blank=True) + daisy_file = models.FileField(_('DAISY file'), upload_to=book_upload_path('daisy.zip'), blank=True) parent = models.ForeignKey('self', blank=True, null=True, related_name='children') @@ -207,7 +208,7 @@ class Book(models.Model): def __unicode__(self): return self.title - def save(self, force_insert=False, force_update=False, reset_short_html=True, refresh_mp3=True): + def save(self, force_insert=False, force_update=False, reset_short_html=True, refresh_mp3=True, **kwargs): if reset_short_html: # Reset _short_html during save update = {} @@ -244,7 +245,7 @@ class Book(models.Model): book_tag, created = Tag.objects.get_or_create(slug=slug, category='book') if created: book_tag.name = self.title[:50] - book_tag.sort_key = slug + book_tag.sort_key = self.title.lower() book_tag.save() return book_tag @@ -263,8 +264,8 @@ class Book(models.Model): formats.append(u'%s' % (reverse('book_text', kwargs={'slug': self.slug}), _('Read online'))) if self.pdf_file: formats.append(u'PDF' % self.pdf_file.url) - if self.epub_file: - formats.append(u'EPUB' % self.epub_file.url) + if self.root_ancestor.epub_file: + formats.append(u'EPUB' % self.root_ancestor.epub_file.url) if self.odt_file: formats.append(u'ODT' % self.odt_file.url) if self.txt_file: @@ -273,6 +274,8 @@ class Book(models.Model): formats.append(u'MP3' % self.mp3_file.url) if self.ogg_file: formats.append(u'OGG' % self.ogg_file.url) + if self.daisy_file: + formats.append(u'DAISY' % self.daisy_file.url) formats = [mark_safe(format) for format in formats] @@ -282,6 +285,18 @@ class Book(models.Model): return mark_safe(getattr(self, key)) + @property + def root_ancestor(self): + """ returns the oldest ancestor """ + + if not hasattr(self, '_root_ancestor'): + book = self + while book.parent: + book = book.parent + self._root_ancestor = book + return self._root_ancestor + + def get_mp3_info(self): """Retrieves artist and director names from audio ID3 tags.""" audio = id3.ID3(self.mp3_file.path) @@ -314,6 +329,52 @@ class Book(models.Model): has_html_file.short_description = 'HTML' has_html_file.boolean = True + def build_epub(self, remove_descendants=True): + """ (Re)builds the epub file. + If book has a parent, does nothing. + Unless remove_descendants is False, descendants' epubs are removed. + """ + + from StringIO import StringIO + from hashlib import sha1 + from django.core.files.base import ContentFile + from librarian import DocProvider + + class BookImportDocProvider(DocProvider): + """ used for joined EPUBs """ + + def __init__(self, book): + self.book = book + + def by_slug(self, slug): + if slug == self.book.slug: + return self.book.xml_file + else: + return Book.objects.get(slug=slug).xml_file + + if self.parent: + # don't need an epub + return + + epub_file = StringIO() + try: + epub.transform(BookImportDocProvider(self), self.slug, epub_file) + self.epub_file.save('%s.epub' % self.slug, ContentFile(epub_file.getvalue()), save=False) + self.save() + FileRecord(slug=self.slug, type='epub', sha1=sha1(epub_file.getvalue()).hexdigest()).save() + except NoDublinCore: + pass + + book_descendants = list(self.children.all()) + while len(book_descendants) > 0: + child_book = book_descendants.pop(0) + if remove_descendants and child_book.has_epub_file(): + child_book.epub_file.delete() + # save anyway, to refresh short_html + child_book.save() + book_descendants += list(child_book.children.all()) + + @classmethod def from_xml_file(cls, xml_file, overwrite=False): # use librarian to parse meta-data @@ -332,6 +393,7 @@ class Book(models.Model): from tempfile import NamedTemporaryFile from slughifi import slughifi from markupstring import MarkupString + from django.core.files.storage import default_storage # Read book metadata book_base, book_slug = book_info.url.rsplit('/', 1) @@ -365,7 +427,7 @@ class Book(models.Model): tag, created = Tag.objects.get_or_create(slug=slughifi(tag_name), category=category) if created: tag.name = tag_name - tag.sort_key = slughifi(tag_sort_key) + tag.sort_key = tag_sort_key.lower() tag.save() book_tags.append(tag) @@ -384,50 +446,72 @@ class Book(models.Model): except Book.DoesNotExist, e: raise Book.DoesNotExist(_('Book with slug = "%s" does not exist.') % slug) - book_descendants = list(book.children.all()) - while len(book_descendants) > 0: - child_book = book_descendants.pop(0) - child_book.tags = list(child_book.tags) + [book_tag] - child_book.save() - for fragment in child_book.fragments.all(): - fragment.tags = set(list(fragment.tags) + [book_tag]) - book_descendants += list(child_book.children.all()) - # Save XML and HTML files book.xml_file.save('%s.xml' % book.slug, raw_file, save=False) + # delete old fragments when overwriting + book.fragments.all().delete() + html_file = NamedTemporaryFile() if html.transform(book.xml_file.path, html_file, parse_dublincore=False): book.html_file.save('%s.html' % book.slug, File(html_file), save=False) + # get ancestor l-tags for adding to new fragments + ancestor_tags = [] + p = book.parent + while p: + ancestor_tags.append(p.book_tag()) + p = p.parent + # Extract fragments closed_fragments, open_fragments = html.extract_fragments(book.html_file.path) for fragment in closed_fragments.values(): - text = fragment.to_string() - short_text = '' - if (len(MarkupString(text)) > 240): - short_text = unicode(MarkupString(text)[:160]) - new_fragment, created = Fragment.objects.get_or_create(anchor=fragment.id, book=book, - defaults={'text': text, 'short_text': short_text}) - try: theme_names = [s.strip() for s in fragment.themes.split(',')] except AttributeError: continue themes = [] for theme_name in theme_names: + if not theme_name: + continue tag, created = Tag.objects.get_or_create(slug=slughifi(theme_name), category='theme') if created: tag.name = theme_name - tag.sort_key = slughifi(theme_name) + tag.sort_key = theme_name.lower() tag.save() themes.append(tag) + if not themes: + continue + + text = fragment.to_string() + short_text = '' + if (len(MarkupString(text)) > 240): + short_text = unicode(MarkupString(text)[:160]) + new_fragment, created = Fragment.objects.get_or_create(anchor=fragment.id, book=book, + defaults={'text': text, 'short_text': short_text}) + new_fragment.save() - new_fragment.tags = set(book_tags + themes + [book_tag]) + new_fragment.tags = set(book_tags + themes + [book_tag] + ancestor_tags) + + if not book.parent: + book.build_epub(remove_descendants=False) + + book_descendants = list(book.children.all()) + # add l-tag to descendants and their fragments + # delete unnecessary EPUB files + while len(book_descendants) > 0: + child_book = book_descendants.pop(0) + child_book.tags = list(child_book.tags) + [book_tag] + if child_book.has_epub_file(): + child_book.epub_file.delete() + child_book.save() + for fragment in child_book.fragments.all(): + fragment.tags = set(list(fragment.tags) + [book_tag]) + book_descendants += list(child_book.children.all()) # refresh cache - book.tag_counter - book.theme_counter + book.reset_tag_counter() + book.reset_theme_counter() book.save() return book @@ -538,6 +622,21 @@ class BookStub(models.Model): return self.title +class FileRecord(models.Model): + slug = models.SlugField(_('slug'), max_length=120, db_index=True) + type = models.CharField(_('type'), max_length=20, db_index=True) + sha1 = models.CharField(_('sha-1 hash'), max_length=40) + time = models.DateTimeField(_('time'), auto_now_add=True) + + class Meta: + ordering = ('-time','-slug', '-type') + verbose_name = _('file record') + verbose_name_plural = _('file records') + + def __unicode__(self): + return "%s %s.%s" % (self.sha1, self.slug, self.type) + + def _tags_updated_handler(sender, affected_tags, **kwargs): # reset tag global counter Tag.objects.filter(pk__in=[tag.pk for tag in affected_tags]).update(book_count=None)