X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/f05daac38bd815128ba11b77b1b40dc03d2b5fcf..e4e3b8bd323e57df11b10e06e2a1fbf1b134ca54:/apps/catalogue/models.py?ds=sidebyside
diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py
index 5bfe6cbb8..d0a620a96 100644
--- a/apps/catalogue/models.py
+++ b/apps/catalogue/models.py
@@ -1,19 +1,33 @@
# -*- coding: utf-8 -*-
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
+from datetime import datetime
+
from django.db import models
from django.db.models import permalink, Q
+from django.core.cache import cache
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import User
from django.core.files import File
from django.template.loader import render_to_string
from django.utils.safestring import mark_safe
+from django.utils.translation import get_language
from django.core.urlresolvers import reverse
+from django.db.models.signals import post_save, m2m_changed, pre_delete
+
+from django.conf import settings
-from newtagging.models import TagBase
+from newtagging.models import TagBase, tags_updated
from newtagging import managers
-from catalogue.fields import JSONField
+from catalogue.fields import JSONField, OverwritingFileField
+from catalogue.utils import ExistingFile
-from librarian import html, dcparser
+from librarian import dcparser, html, epub, NoDublinCore
+import mutagen
from mutagen import id3
+from slughifi import slughifi
+from sortify import sortify
TAG_CATEGORIES = (
@@ -26,302 +40,869 @@ TAG_CATEGORIES = (
('book', _('book')),
)
+MEDIA_FORMATS = (
+ ('odt', _('ODT file')),
+ ('mp3', _('MP3 file')),
+ ('ogg', _('OGG file')),
+ ('daisy', _('DAISY file')),
+)
+
+# not quite, but Django wants you to set a timeout
+CACHE_FOREVER = 2419200 # 28 days
class TagSubcategoryManager(models.Manager):
def __init__(self, subcategory):
super(TagSubcategoryManager, self).__init__()
self.subcategory = subcategory
-
+
def get_query_set(self):
return super(TagSubcategoryManager, self).get_query_set().filter(category=self.subcategory)
class Tag(TagBase):
name = models.CharField(_('name'), max_length=50, db_index=True)
- slug = models.SlugField(_('slug'), max_length=120, unique=True, db_index=True)
- sort_key = models.SlugField(_('sort key'), max_length=120, db_index=True)
- category = models.CharField(_('category'), max_length=50, blank=False, null=False,
+ slug = models.SlugField(_('slug'), 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)
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)
- gazeta_link = models.CharField(blank=True, max_length=240)
-
- def has_description(self):
- return len(self.description) > 0
- has_description.short_description = _('description')
- has_description.boolean = True
+ book_count = models.IntegerField(_('book count'), blank=True, null=True)
+ gazeta_link = models.CharField(blank=True, max_length=240)
+ wiki_link = models.CharField(blank=True, max_length=240)
+
+ created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
+ changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
+
+ class UrlDeprecationWarning(DeprecationWarning):
+ pass
+
+ categories_rev = {
+ 'autor': 'author',
+ 'epoka': 'epoch',
+ 'rodzaj': 'kind',
+ 'gatunek': 'genre',
+ 'motyw': 'theme',
+ 'polka': 'set',
+ }
+ categories_dict = dict((item[::-1] for item in categories_rev.iteritems()))
- @permalink
- def get_absolute_url(self):
- return ('catalogue.views.tagged_object_list', [self.slug])
-
class Meta:
ordering = ('sort_key',)
verbose_name = _('tag')
verbose_name_plural = _('tags')
-
+ unique_together = (("slug", "category"),)
+
def __unicode__(self):
return self.name
+ def __repr__(self):
+ return "Tag(slug=%r)" % self.slug
+
+ @permalink
+ def get_absolute_url(self):
+ return ('catalogue.views.tagged_object_list', [self.url_chunk])
+
+ def has_description(self):
+ return len(self.description) > 0
+ has_description.short_description = _('description')
+ has_description.boolean = True
+
+ 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):
- tag_slugs = tags.split('/')
- return [Tag.objects.get(slug=slug) for slug in tag_slugs]
+ real_tags = []
+ ambiguous_slugs = []
+ category = None
+ deprecated = False
+ tags_splitted = tags.split('/')
+ for name in tags_splitted:
+ if category:
+ real_tags.append(Tag.objects.get(slug=name, category=category))
+ category = None
+ elif name in Tag.categories_rev:
+ category = Tag.categories_rev[name]
+ else:
+ try:
+ real_tags.append(Tag.objects.exclude(category='book').get(slug=name))
+ deprecated = True
+ except Tag.MultipleObjectsReturned, e:
+ ambiguous_slugs.append(name)
+
+ if category:
+ # 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
+ if deprecated:
+ e = Tag.UrlDeprecationWarning()
+ e.tags = real_tags
+ raise e
+ return real_tags
else:
return TagBase.get_tag_list(tags)
+ @property
+ def url_chunk(self):
+ return '/'.join((Tag.categories_dict[self.category], self.slug))
+
-def book_upload_path(ext):
- def get_dynamic_path(book, filename):
- return 'lektura/%s.%s' % (book.slug, ext)
+# TODO: why is this hard-coded ?
+def book_upload_path(ext=None, maxlen=100):
+ def get_dynamic_path(media, filename, ext=ext):
+ # how to put related book's slug here?
+ if not ext:
+ if media.type == 'daisy':
+ ext = 'daisy.zip'
+ else:
+ ext = media.type
+ if 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)
return get_dynamic_path
+class BookMedia(models.Model):
+ type = models.CharField(_('type'), choices=MEDIA_FORMATS, 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):
+ try:
+ old = BookMedia.objects.get(pk=self.pk)
+ except BookMedia.DoesNotExist, e:
+ pass
+ 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)
+ 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.
+ """
+
+ 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.
+ """
+
+ 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
+
+
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)
- _short_html = models.TextField(_('short HTML'), editable=False)
+ title = models.CharField(_('title'), max_length=120)
+ sort_key = models.CharField(_('sort_key'), max_length=120, db_index=True, editable=False)
+ 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_add=True, db_index=True)
+ changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
parent_number = models.IntegerField(_('parent number'), default=0)
- extra_info = JSONField(_('extra information'))
- gazeta_link = models.CharField(blank=True, max_length=240)
-
- # Formats
- xml_file = models.FileField(_('XML file'), upload_to=book_upload_path('xml'), blank=True)
- html_file = models.FileField(_('HTML file'), upload_to=book_upload_path('html'), blank=True)
- pdf_file = models.FileField(_('PDF file'), upload_to=book_upload_path('pdf'), blank=True)
- odt_file = models.FileField(_('ODT file'), upload_to=book_upload_path('odt'), blank=True)
- 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)
-
- parent = models.ForeignKey('self', blank=True, null=True, related_name='children')
-
- objects = models.Manager()
- tagged = managers.ModelTaggedItemManager(Tag)
- tags = managers.TagDescriptor(Tag)
+ extra_info = JSONField(_('extra information'), default='{}')
+ gazeta_link = models.CharField(blank=True, max_length=240)
+ wiki_link = models.CharField(blank=True, max_length=240)
+ # files generated during publication
+ xml_file = models.FileField(_('XML file'), upload_to=book_upload_path('xml'), blank=True)
+ html_file = models.FileField(_('HTML file'), upload_to=book_upload_path('html'), blank=True)
+ pdf_file = models.FileField(_('PDF file'), upload_to=book_upload_path('pdf'), blank=True)
+ epub_file = models.FileField(_('EPUB file'), upload_to=book_upload_path('epub'), blank=True)
+ txt_file = models.FileField(_('TXT file'), upload_to=book_upload_path('txt'), blank=True)
+
+ parent = models.ForeignKey('self', blank=True, null=True, related_name='children')
+ objects = models.Manager()
+ tagged = managers.ModelTaggedItemManager(Tag)
+ tags = managers.TagDescriptor(Tag)
+
+ class AlreadyExists(Exception):
+ pass
+
+ class Meta:
+ ordering = ('sort_key',)
+ verbose_name = _('book')
+ verbose_name_plural = _('books')
+
+ def __unicode__(self):
+ return self.title
+
+ def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
+ self.sort_key = sortify(self.title)
+
+ ret = super(Book, self).save(force_insert, force_update)
+
+ if reset_short_html:
+ self.reset_short_html()
+
+ return ret
+
+ @permalink
+ def get_absolute_url(self):
+ return ('catalogue.views.book_detail', [self.slug])
-
@property
def name(self):
return self.title
-
+
+ def book_tag_slug(self):
+ return ('l-' + self.slug)[:120]
+
+ def book_tag(self):
+ 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]
+ book_tag.sort_key = self.title.lower()
+ book_tag.save()
+ return book_tag
+
+ def has_media(self, type):
+ if type == 'xml':
+ if self.xml_file:
+ return True
+ else:
+ return False
+ elif type == 'html':
+ if self.html_file:
+ return True
+ else:
+ return False
+ elif type == 'txt':
+ if self.txt_file:
+ return True
+ else:
+ return False
+ elif type == 'pdf':
+ if self.pdf_file:
+ return True
+ else:
+ return False
+ elif type == 'epub':
+ if self.epub_file:
+ return True
+ else:
+ return False
+ else:
+ if self.media.filter(type=type).exists():
+ return True
+ else:
+ return False
+
+ def get_media(self, type):
+ if self.has_media(type):
+ if type == "xml":
+ return self.xml_file
+ elif type == "html":
+ return self.html_file
+ elif type == "epub":
+ return self.epub_file
+ elif type == "txt":
+ return self.txt_file
+ elif type == "pdf":
+ return self.pdf_file
+ else:
+ return self.media.filter(type=type)
+ else:
+ return None
+
+ def get_mp3(self):
+ return self.get_media("mp3")
+ def get_odt(self):
+ return self.get_media("odt")
+ def get_ogg(self):
+ return self.get_media("ogg")
+ def get_daisy(self):
+ return self.get_media("daisy")
+
+ def reset_short_html(self):
+ if self.id is None:
+ return
+
+ cache_key = "Book.short_html/%d/%s"
+ for lang, langname in settings.LANGUAGES:
+ cache.delete(cache_key % (self.id, lang))
+ # Fragment.short_html relies on book's tags, so reset it here too
+ for fragm in self.fragments.all():
+ fragm.reset_short_html()
+
def short_html(self):
- if len(self._short_html):
- return mark_safe(self._short_html)
+ if self.id:
+ cache_key = "Book.short_html/%d/%s" % (self.id, get_language())
+ short_html = cache.get(cache_key)
+ else:
+ short_html = None
+
+ if short_html is not None:
+ return mark_safe(short_html)
else:
tags = self.tags.filter(~Q(category__in=('set', 'theme', 'book')))
- tags = [u'%s' % (tag.get_absolute_url(), tag.name) for tag in tags]
+ tags = [mark_safe(u'%s' % (tag.get_absolute_url(), tag.name)) for tag in tags]
formats = []
- if self.html_file:
- formats.append(u'Czytaj online' % reverse('book_text', kwargs={'slug': self.slug}))
- if self.pdf_file:
- formats.append(u'PDF' % self.pdf_file.url)
- if self.odt_file:
- formats.append(u'ODT' % self.odt_file.url)
- if self.txt_file:
- formats.append(u'TXT' % self.txt_file.url)
- if self.mp3_file:
- formats.append(u'MP3' % self.mp3_file.url)
- if self.ogg_file:
- formats.append(u'OGG' % self.ogg_file.url)
-
- self._short_html = unicode(render_to_string('catalogue/book_short.html',
+ # files generated during publication
+ if self.has_media("html"):
+ formats.append(u'%s' % (reverse('book_text', kwargs={'slug': self.slug}), _('Read online')))
+ if self.has_media("pdf"):
+ formats.append(u'PDF' % self.get_media('pdf').url)
+ if self.root_ancestor.has_media("epub"):
+ formats.append(u'EPUB' % self.root_ancestor.get_media('epub').url)
+ if self.has_media("txt"):
+ formats.append(u'TXT' % self.get_media('txt').url)
+ # other files
+ for m in self.media.order_by('type'):
+ formats.append(u'%s' % (m.file.url, m.type.upper()))
+
+ formats = [mark_safe(format) for format in formats]
+
+ short_html = unicode(render_to_string('catalogue/book_short.html',
{'book': self, 'tags': tags, 'formats': formats}))
- self.save()
- return mark_safe(self._short_html)
-
- def save(self, force_insert=False, force_update=False):
- if self.mp3_file:
- extra_info = self.get_extra_info_value()
- extra_info.update(self.get_mp3_info())
- self.set_extra_info_value(extra_info)
- return super(Book, self).save(force_insert, force_update)
-
- def get_mp3_info(self):
- """Retrieves artist and director names from audio ID3 tags."""
- audio = id3.ID3(self.mp3_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'))
- return {'artist_name': artist_name, 'director_name': director_name}
-
+
+ if self.id:
+ cache.set(cache_key, short_html, CACHE_FOREVER)
+ return mark_safe(short_html)
+
+ @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 has_description(self):
return len(self.description) > 0
has_description.short_description = _('description')
has_description.boolean = True
-
+
+ # ugly ugly ugly
def has_pdf_file(self):
return bool(self.pdf_file)
has_pdf_file.short_description = 'PDF'
has_pdf_file.boolean = True
-
- def has_odt_file(self):
- return bool(self.odt_file)
- has_odt_file.short_description = 'ODT'
- has_odt_file.boolean = True
-
+
+ def has_epub_file(self):
+ return bool(self.epub_file)
+ has_epub_file.short_description = 'EPUB'
+ has_epub_file.boolean = True
+
+ def has_txt_file(self):
+ return bool(self.txt_file)
+ has_txt_file.short_description = 'HTML'
+ has_txt_file.boolean = True
+
def has_html_file(self):
return bool(self.html_file)
has_html_file.short_description = 'HTML'
has_html_file.boolean = True
- class AlreadyExists(Exception):
- pass
+ def has_odt_file(self):
+ return bool(self.has_media("odt"))
+ has_odt_file.short_description = 'ODT'
+ has_odt_file.boolean = True
+
+ def has_mp3_file(self):
+ return bool(self.has_media("mp3"))
+ has_mp3_file.short_description = 'MP3'
+ has_mp3_file.boolean = True
+
+ def has_ogg_file(self):
+ return bool(self.has_media("ogg"))
+ has_ogg_file.short_description = 'OGG'
+ has_ogg_file.boolean = True
- @staticmethod
- def from_xml_file(xml_file, overwrite=False):
+ def has_daisy_file(self):
+ return bool(self.has_media("daisy"))
+ has_daisy_file.short_description = 'DAISY'
+ has_daisy_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, output_file=epub_file)
+ self.epub_file.save('%s.epub' % self.slug, ContentFile(epub_file.getvalue()))
+ 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())
+
+ def build_txt(self):
+ from StringIO import StringIO
+ from django.core.files.base import ContentFile
+ from librarian import text
+
+ out = StringIO()
+ text.transform(open(self.xml_file.path), out)
+ self.txt_file.save('%s.txt' % self.slug, ContentFile(out.getvalue()))
+
+
+ def build_html(self):
from tempfile import NamedTemporaryFile
- from slughifi import slughifi
from markupstring import MarkupString
-
- # Read book metadata
+
+ meta_tags = list(self.tags.filter(
+ category__in=('author', 'epoch', 'genre', 'kind')))
+ book_tag = self.book_tag()
+
+ html_file = NamedTemporaryFile()
+ if html.transform(self.xml_file.path, html_file, parse_dublincore=False):
+ self.html_file.save('%s.html' % self.slug, File(html_file))
+
+ # get ancestor l-tags for adding to new fragments
+ ancestor_tags = []
+ p = self.parent
+ while p:
+ ancestor_tags.append(p.book_tag())
+ p = p.parent
+
+ # Delete old fragments and create them from scratch
+ self.fragments.all().delete()
+ # Extract fragments
+ closed_fragments, open_fragments = html.extract_fragments(self.html_file.path)
+ for fragment in closed_fragments.values():
+ 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 = 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 = Fragment.objects.create(anchor=fragment.id, book=self,
+ text=text, short_text=short_text)
+
+ new_fragment.save()
+ new_fragment.tags = set(meta_tags + themes + [book_tag] + ancestor_tags)
+ self.save()
+ return True
+ return False
+
+
+ @classmethod
+ def from_xml_file(cls, xml_file, **kwargs):
+ # use librarian to parse meta-data
book_info = dcparser.parse(xml_file)
+
+ if not isinstance(xml_file, File):
+ xml_file = File(open(xml_file))
+
+ try:
+ return cls.from_text_and_meta(xml_file, book_info, **kwargs)
+ finally:
+ xml_file.close()
+
+ @classmethod
+ def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True):
+ import re
+
+ # check for parts before we do anything
+ children = []
+ if hasattr(book_info, 'parts'):
+ for part_url in book_info.parts:
+ base, slug = part_url.rsplit('/', 1)
+ try:
+ children.append(Book.objects.get(slug=slug))
+ except Book.DoesNotExist, e:
+ raise Book.DoesNotExist(_('Book with slug = "%s" does not exist.') % slug)
+
+
+ # Read book metadata
book_base, book_slug = book_info.url.rsplit('/', 1)
+ if re.search(r'[^a-zA-Z0-9-]', book_slug):
+ raise ValueError('Invalid characters in slug')
book, created = Book.objects.get_or_create(slug=book_slug)
-
+
if created:
book_shelves = []
else:
if not overwrite:
- raise Book.AlreadyExists('Book %s already exists' % book_slug)
+ raise Book.AlreadyExists(_('Book %s already exists') % book_slug)
# Save shelves for this book
book_shelves = list(book.tags.filter(category='set'))
-
+
book.title = book_info.title
book.set_extra_info_value(book_info.to_dict())
- book._short_html = ''
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))
- if created:
- tag.name = tag_name
- tag.sort_key = slughifi(tag_sort_key)
- tag.category = category
- tag.save()
- book_tags.append(tag)
-
- book_tag, created = Tag.objects.get_or_create(slug=('l-' + book.slug)[:120])
- if created:
- book_tag.name = book.title[:50]
- book_tag.sort_key = ('l-' + book.slug)[:120]
- book_tag.category = 'book'
- book_tag.save()
- book_tags.append(book_tag)
-
- book.tags = book_tags
-
- if hasattr(book_info, 'parts'):
- for n, part_url in enumerate(book_info.parts):
- base, slug = part_url.rsplit('/', 1)
- child_book = Book.objects.get(slug=slug)
- child_book.parent = book
- child_book.parent_number = n
- child_book.save()
+
+ meta_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 = sortify(tag_sort_key.lower())
+ tag.save()
+ meta_tags.append(tag)
+
+ book.tags = set(meta_tags + book_shelves)
+
+ book_tag = book.book_tag()
+
+ for n, child_book in enumerate(children):
+ child_book.parent = book
+ child_book.parent_number = n
+ child_book.save()
+
+ # 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()
+
+ if book.build_html():
+ if not settings.NO_BUILD_TXT and build_txt:
+ book.build_txt()
+
+ if not settings.NO_BUILD_EPUB and build_epub:
+ book.root_ancestor.build_epub()
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]
+ 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
- if not isinstance(xml_file, File):
- xml_file = File(file(xml_file))
- book.xml_file.save('%s.xml' % book.slug, xml_file, save=False)
-
- html_file = NamedTemporaryFile()
- if html.transform(book.xml_file.path, html_file):
- book.html_file.save('%s.html' % book.slug, File(html_file), save=False)
-
- # 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:
- tag, created = Tag.objects.get_or_create(slug=slughifi(theme_name))
- if created:
- tag.name = theme_name
- tag.sort_key = slughifi(theme_name)
- tag.category = 'theme'
- tag.save()
- themes.append(tag)
- new_fragment.save()
- new_fragment.tags = set(list(book.tags) + themes + [book_tag])
- book_themes += themes
-
- book_themes = set(book_themes)
- book.tags = list(book.tags) + list(book_themes) + book_shelves
-
+
book.save()
+
+ # refresh cache
+ book.reset_tag_counter()
+ book.reset_theme_counter()
+
return book
-
- @permalink
- def get_absolute_url(self):
- return ('catalogue.views.book_detail', [self.slug])
-
- class Meta:
- ordering = ('title',)
- verbose_name = _('book')
- verbose_name_plural = _('books')
- def __unicode__(self):
- return self.title
+ def reset_tag_counter(self):
+ if self.id is None:
+ return
+
+ cache_key = "Book.tag_counter/%d" % self.id
+ cache.delete(cache_key)
+ if self.parent:
+ self.parent.reset_tag_counter()
+
+ @property
+ def tag_counter(self):
+ if self.id:
+ cache_key = "Book.tag_counter/%d" % self.id
+ tags = cache.get(cache_key)
+ else:
+ tags = None
+
+ if tags is None:
+ tags = {}
+ for child in self.children.all().order_by():
+ for tag_pk, value in child.tag_counter.iteritems():
+ tags[tag_pk] = tags.get(tag_pk, 0) + value
+ for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by():
+ tags[tag.pk] = 1
+
+ if self.id:
+ cache.set(cache_key, tags, CACHE_FOREVER)
+ return tags
+
+ def reset_theme_counter(self):
+ if self.id is None:
+ return
+
+ cache_key = "Book.theme_counter/%d" % self.id
+ cache.delete(cache_key)
+ if self.parent:
+ self.parent.reset_theme_counter()
+
+ @property
+ def theme_counter(self):
+ if self.id:
+ cache_key = "Book.theme_counter/%d" % self.id
+ tags = cache.get(cache_key)
+ else:
+ tags = None
+
+ if tags is None:
+ tags = {}
+ for fragment in Fragment.tagged.with_any([self.book_tag()]).order_by():
+ for tag in fragment.tags.filter(category='theme').order_by():
+ tags[tag.pk] = tags.get(tag.pk, 0) + 1
+
+ if self.id:
+ cache.set(cache_key, tags, CACHE_FOREVER)
+ return tags
+
+ def pretty_title(self, html_links=False):
+ book = self
+ names = list(book.tags.filter(category='author'))
+
+ books = []
+ while book:
+ books.append(book)
+ book = book.parent
+ names.extend(reversed(books))
+
+ if html_links:
+ names = ['%s' % (tag.get_absolute_url(), tag.name) for tag in names]
+ else:
+ names = [tag.name for tag in names]
+
+ return ', '.join(names)
+
+ @classmethod
+ def tagged_top_level(cls, tags):
+ """ Returns top-level books tagged with `tags'.
+
+ It only returns those books which don't have ancestors which are
+ also tagged with those tags.
+
+ """
+ # get relevant books and their tags
+ objects = cls.tagged.with_all(tags)
+ # eliminate descendants
+ l_tags = Tag.objects.filter(category='book', slug__in=[book.book_tag_slug() for book in objects])
+ descendants_keys = [book.pk for book in cls.tagged.with_any(l_tags)]
+ if descendants_keys:
+ objects = objects.exclude(pk__in=descendants_keys)
+
+ return objects
class Fragment(models.Model):
text = models.TextField()
short_text = models.TextField(editable=False)
- _short_html = models.TextField(editable=False)
anchor = models.CharField(max_length=120)
book = models.ForeignKey(Book, related_name='fragments')
objects = models.Manager()
tagged = managers.ModelTaggedItemManager(Tag)
tags = managers.TagDescriptor(Tag)
-
- def short_html(self):
- if len(self._short_html):
- return mark_safe(self._short_html)
- else:
- book_authors = [u'%s' % (tag.get_absolute_url(), tag.name)
- for tag in self.book.tags if tag.category == 'author']
-
- self._short_html = unicode(render_to_string('catalogue/fragment_short.html',
- {'fragment': self, 'book': self.book, 'book_authors': book_authors}))
- self.save()
- return mark_safe(self._short_html)
-
- def get_absolute_url(self):
- return '%s#m%s' % (reverse('book_text', kwargs={'slug': self.book.slug}), self.anchor)
-
+
class Meta:
ordering = ('book', 'anchor',)
verbose_name = _('fragment')
verbose_name_plural = _('fragments')
+ def get_absolute_url(self):
+ return '%s#m%s' % (reverse('book_text', kwargs={'slug': self.book.slug}), self.anchor)
+
+ def reset_short_html(self):
+ if self.id is None:
+ return
+
+ cache_key = "Fragment.short_html/%d/%s"
+ for lang, langname in settings.LANGUAGES:
+ cache.delete(cache_key % (self.id, lang))
+
+ def short_html(self):
+ if self.id:
+ cache_key = "Fragment.short_html/%d/%s" % (self.id, get_language())
+ short_html = cache.get(cache_key)
+ else:
+ short_html = None
+
+ if short_html is not None:
+ return mark_safe(short_html)
+ else:
+ short_html = unicode(render_to_string('catalogue/fragment_short.html',
+ {'fragment': self}))
+ if self.id:
+ cache.set(cache_key, short_html, CACHE_FOREVER)
+ return mark_safe(short_html)
+
+
+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)
+
+###########
+#
+# SIGNALS
+#
+###########
+
+
+def _tags_updated_handler(sender, affected_tags, **kwargs):
+ # reset tag global counter
+ # we want Tag.changed_at updated for API to know the tag was touched
+ Tag.objects.filter(pk__in=[tag.pk for tag in affected_tags]).update(book_count=None, changed_at=datetime.now())
+
+ # 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)
+
+
+def _pre_delete_handler(sender, instance, **kwargs):
+ """ refresh Book on BookMedia delete """
+ if sender == BookMedia:
+ instance.book.save()
+pre_delete.connect(_pre_delete_handler)
+
+def _post_save_handler(sender, instance, **kwargs):
+ """ refresh all the short_html stuff on BookMedia update """
+ if sender == BookMedia:
+ instance.book.save()
+post_save.connect(_post_save_handler)