X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/7f302cfc1fac98e08e65061111fd1395bb399209..0ee9de179914aa395f4b7475b7b9b6229c42b760:/apps/catalogue/models.py
diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index 8c83faa53..d3b24d379 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 dcparser, html, epub
+from librarian import dcparser, html, epub, NoDublinCore
from mutagen import id3
@@ -207,7 +207,7 @@ 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 = {}
@@ -263,8 +263,8 @@ 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:
@@ -282,6 +282,18 @@ 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 +326,52 @@ 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
@@ -332,10 +390,7 @@ class Book(models.Model):
from tempfile import NamedTemporaryFile
from slughifi import slughifi
from markupstring import MarkupString
- from hashlib import sha1
- from django.core.files.base import ContentFile
from django.core.files.storage import default_storage
- from StringIO import StringIO
# Read book metadata
book_base, book_slug = book_info.url.rsplit('/', 1)
@@ -388,15 +443,6 @@ 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)
@@ -404,12 +450,6 @@ class Book(models.Model):
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)
- # Create EPUB
- epub_file = StringIO()
- epub.transform(book.xml_file, epub_file)
- book.epub_file.save('%s.epub' % book.slug, ContentFile(epub_file.getvalue()), save=False)
- FileRecord(slug=book.slug, type='epub', sha1=sha1(epub_file.getvalue()).hexdigest()).save()
-
# Extract fragments
closed_fragments, open_fragments = html.extract_fragments(book.html_file.path)
for fragment in closed_fragments.values():
@@ -440,6 +480,21 @@ class Book(models.Model):
new_fragment.save()
new_fragment.tags = set(book_tags + themes + [book_tag])
+ 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