X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/d95d8a5fe401479b8adaa10cb77012c130525efd..25636fdae5cece55fbddec2f42cb32894ac4f76c:/apps/catalogue/models.py
diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index d63581f47..d3b24d379 100644
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -13,11 +13,11 @@ from django.utils.translation import get_language
from django.core.urlresolvers import reverse
from datetime import datetime
-from newtagging.models import TagBase
+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
@@ -51,11 +51,11 @@ class Tag(TagBase):
main_page = models.BooleanField(_('main page'), default=False, db_index=True, help_text=_('Show tag on main page'))
user = models.ForeignKey(User, blank=True, null=True)
- book_count = models.IntegerField(_('book count'), default=0, blank=False, null=False)
+ book_count = models.IntegerField(_('book count'), blank=False, null=True)
death = models.IntegerField(_(u'year of death'), blank=True, null=True)
gazeta_link = models.CharField(blank=True, max_length=240)
wiki_link = models.CharField(blank=True, max_length=240)
-
+
categories_rev = {
'autor': 'author',
'epoka': 'epoch',
@@ -98,12 +98,35 @@ class Tag(TagBase):
""" calculates the year of public domain entry for an author """
return self.death + 71 if self.death is not None else None
+ def get_count(self):
+ """ returns global book count for book tags, fragment count for themes """
+
+ if self.book_count is None:
+ if self.category == 'book':
+ # never used
+ objects = Book.objects.none()
+ elif self.category == 'theme':
+ objects = Fragment.tagged.with_all((self,))
+ else:
+ objects = Book.tagged.with_all((self,)).order_by()
+ if self.category != 'set':
+ # eliminate descendants
+ l_tags = Tag.objects.filter(slug__in=[book.book_tag_slug() for book in objects])
+ descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags)]
+ if descendants_keys:
+ objects = objects.exclude(pk__in=descendants_keys)
+ self.book_count = objects.count()
+ self.save()
+ return self.book_count
+
@staticmethod
def get_tag_list(tags):
if isinstance(tags, basestring):
real_tags = []
+ ambiguous_slugs = []
category = None
- for name in tags.split('/'):
+ tags_splitted = tags.split('/')
+ for index, name in enumerate(tags_splitted):
if name in Tag.categories_rev:
category = Tag.categories_rev[name]
else:
@@ -111,19 +134,31 @@ class Tag(TagBase):
real_tags.append(Tag.objects.get(slug=name, category=category))
category = None
else:
- real_tags.append(Tag.objects.get(slug=name))
+ try:
+ real_tags.append(Tag.objects.exclude(category='book').get(slug=name))
+ except Tag.MultipleObjectsReturned, e:
+ ambiguous_slugs.append(name)
+
if category:
- raise Http404
- return real_tags
+ # something strange left off
+ raise Tag.DoesNotExist()
+ if ambiguous_slugs:
+ # some tags should be qualified
+ e = Tag.MultipleObjectsReturned()
+ e.tags = real_tags
+ e.ambiguous_slugs = ambiguous_slugs
+ raise e
+ else:
+ return real_tags
else:
return TagBase.get_tag_list(tags)
-
+
@property
def url_chunk(self):
return '/'.join((Tag.categories_dict[self.category], self.slug))
-# TODO: why is this hard-coded ?
+# TODO: why is this hard-coded ?
def book_upload_path(ext):
def get_dynamic_path(book, filename):
return 'lektura/%s.%s' % (book.slug, ext)
@@ -157,7 +192,7 @@ class Book(models.Model):
objects = models.Manager()
tagged = managers.ModelTaggedItemManager(Tag)
tags = managers.TagDescriptor(Tag)
-
+
_tag_counter = JSONField(null=True, editable=False)
_theme_counter = JSONField(null=True, editable=False)
@@ -172,11 +207,15 @@ 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 = {}
for key in filter(lambda x: x.startswith('_short_html'), self.__dict__):
+ update[key] = ''
self.__setattr__(key, '')
+ # Fragment.short_html relies on book's tags, so reset it here too
+ self.fragments.all().update(**update)
book = super(Book, self).save(force_insert, force_update)
@@ -196,9 +235,12 @@ class Book(models.Model):
@property
def name(self):
return self.title
-
+
+ def book_tag_slug(self):
+ return ('l-' + self.slug)[:120]
+
def book_tag(self):
- slug = ('l-' + self.slug)[:120]
+ slug = self.book_tag_slug()
book_tag, created = Tag.objects.get_or_create(slug=slug, category='book')
if created:
book_tag.name = self.title[:50]
@@ -221,8 +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:
@@ -240,6 +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)
@@ -272,13 +326,59 @@ 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
book_info = dcparser.parse(xml_file)
if not isinstance(xml_file, File):
- xml_file = File(xml_file)
+ xml_file = File(open(xml_file))
try:
return cls.from_text_and_meta(xml_file, book_info, overwrite)
@@ -290,6 +390,7 @@ 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)
@@ -309,20 +410,25 @@ class Book(models.Model):
book.save()
book_tags = []
- for category in ('kind', 'genre', 'author', 'epoch'):
- tag_name = getattr(book_info, category)
- tag_sort_key = tag_name
- if category == 'author':
- tag_sort_key = tag_name.last_name
- tag_name = ' '.join(tag_name.first_names) + ' ' + tag_name.last_name
- 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.save()
- book_tags.append(tag)
-
- book.tags = book_tags
+ categories = (('kinds', 'kind'), ('genres', 'genre'), ('authors', 'author'), ('epochs', 'epoch'))
+ for field_name, category in categories:
+ try:
+ tag_names = getattr(book_info, field_name)
+ except:
+ tag_names = [getattr(book_info, category)]
+ for tag_name in tag_names:
+ tag_sort_key = tag_name
+ if category == 'author':
+ tag_sort_key = tag_name.last_name
+ tag_name = ' '.join(tag_name.first_names) + ' ' + tag_name.last_name
+ 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.save()
+ book_tags.append(tag)
+
+ book.tags = book_tags + book_shelves
book_tag = book.book_tag()
@@ -337,15 +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)
@@ -355,38 +452,57 @@ class Book(models.Model):
# Extract fragments
closed_fragments, open_fragments = html.extract_fragments(book.html_file.path)
- book_themes = []
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.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(list(book.tags) + themes + [book_tag])
- book_themes += themes
+ 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())
- book_themes = set(book_themes)
- book.tags = list(book.tags) + list(book_themes) + book_shelves
+ # refresh cache
+ book.tag_counter
+ book.theme_counter
book.save()
return book
-
-
+
+
def refresh_tag_counter(self):
tags = {}
for child in self.children.all().order_by():
@@ -397,7 +513,13 @@ class Book(models.Model):
self.set__tag_counter_value(tags)
self.save(reset_short_html=False, refresh_mp3=False)
return tags
-
+
+ def reset_tag_counter(self):
+ self._tag_counter = None
+ self.save(reset_short_html=False, refresh_mp3=False)
+ if self.parent:
+ self.parent.reset_tag_counter()
+
@property
def tag_counter(self):
if self._tag_counter is None:
@@ -412,13 +534,19 @@ class Book(models.Model):
self.set__theme_counter_value(tags)
self.save(reset_short_html=False, refresh_mp3=False)
return tags
-
+
+ def reset_theme_counter(self):
+ self._theme_counter = None
+ self.save(reset_short_html=False, refresh_mp3=False)
+ if self.parent:
+ self.parent.reset_theme_counter()
+
@property
def theme_counter(self):
if self._theme_counter is None:
return self.refresh_theme_counter()
return dict((int(k), v) for k, v in self.get__theme_counter_value().iteritems())
-
+
class Fragment(models.Model):
@@ -446,11 +574,8 @@ class Fragment(models.Model):
if short_html and len(short_html):
return mark_safe(short_html)
else:
- book_authors = [mark_safe(u'%s' % (tag.get_absolute_url(), tag.name))
- for tag in self.book.tags if tag.category == 'author']
-
setattr(self, key, unicode(render_to_string('catalogue/fragment_short.html',
- {'fragment': self, 'book': self.book, 'book_authors': book_authors})))
+ {'fragment': self})))
self.save()
return mark_safe(getattr(self, key))
@@ -483,3 +608,34 @@ 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)
+
+ # if book tags changed, reset book tag counter
+ if isinstance(sender, Book) and \
+ Tag.objects.filter(pk__in=(tag.pk for tag in affected_tags)).\
+ exclude(category__in=('book', 'theme', 'set')).count():
+ sender.reset_tag_counter()
+ # if fragment theme changed, reset book theme counter
+ elif isinstance(sender, Fragment) and \
+ Tag.objects.filter(pk__in=(tag.pk for tag in affected_tags)).\
+ filter(category='theme').count():
+ sender.book.reset_theme_counter()
+tags_updated.connect(_tags_updated_handler)
+