X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/ce9b29777e9dc6d8d285a18d5aa8f75905b0a229..b1c8f7e689f4b1060f9f9abe26552357b19881b6:/apps/catalogue/models.py diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index bf724fdd0..930f98d14 100644 --- a/apps/catalogue/models.py +++ b/apps/catalogue/models.py @@ -6,6 +6,7 @@ from datetime import datetime from django.db import models from django.db.models import permalink, Q +import django.dispatch from django.core.cache import cache from django.utils.translation import ugettext_lazy as _ from django.contrib.auth.models import User @@ -21,14 +22,14 @@ from django.conf import settings from newtagging.models import TagBase, tags_updated from newtagging import managers from catalogue.fields import JSONField, OverwritingFileField -from catalogue.utils import ExistingFile +from catalogue.utils import ExistingFile, BookImportDocProvider from librarian import dcparser, html, epub, NoDublinCore import mutagen from mutagen import id3 from slughifi import slughifi from sortify import sortify - +from os import unlink TAG_CATEGORIES = ( ('author', _('author')), @@ -47,6 +48,10 @@ MEDIA_FORMATS = ( ('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__() @@ -291,14 +296,16 @@ class Book(models.Model): 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) - + 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) + html_built = django.dispatch.Signal() + class AlreadyExists(Exception): pass @@ -313,10 +320,12 @@ class Book(models.Model): 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 super(Book, self).save(force_insert, force_update) + return ret @permalink def get_absolute_url(self): @@ -397,6 +406,9 @@ class Book(models.Model): 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)) @@ -405,14 +417,15 @@ class Book(models.Model): fragm.reset_short_html() def short_html(self): - cache_key = "Book.short_html/%d/%s" % (self.id, get_language()) - short_html = cache.get(cache_key) + 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: - print 'b.s from cache' return mark_safe(short_html) else: - print 'b.s manual' tags = self.tags.filter(~Q(category__in=('set', 'theme', 'book'))) tags = [mark_safe(u'%s' % (tag.get_absolute_url(), tag.name)) for tag in tags] @@ -434,7 +447,9 @@ class Book(models.Model): short_html = unicode(render_to_string('catalogue/book_short.html', {'book': self, 'tags': tags, 'formats': formats})) - cache.set(cache_key, short_html) + + if self.id: + cache.set(cache_key, short_html, CACHE_FOREVER) return mark_safe(short_html) @property @@ -489,34 +504,49 @@ class Book(models.Model): return bool(self.has_media("ogg")) has_ogg_file.short_description = 'OGG' has_ogg_file.boolean = True - + def has_daisy_file(self): return bool(self.has_media("daisy")) has_daisy_file.short_description = 'DAISY' - has_daisy_file.boolean = True - + has_daisy_file.boolean = True + + def build_pdf(self): + """ (Re)builds the pdf file. + + """ + from librarian import pdf, ParseError + from tempfile import NamedTemporaryFile + import os + + try: + path, fname = os.path.realpath(self.xml_file.path).rsplit('/', 1) + try: + pdf_file = NamedTemporaryFile(delete=False) + + pdf.transform(BookImportDocProvider(self), + file_path=str(self.xml_file.path), + output_file=pdf_file, + ) + + self.pdf_file.save('%s.pdf' % self.slug, File(open(pdf_file.name))) + finally: + unlink(pdf_file.name) + + except ParseError, e: + print '%(file)s:%(name)s:%(message)s; use -v to see more output' % { + 'file': self.xml_file.path, + 'name': e.__class__.__name__, + 'message': e + } + 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 @@ -600,6 +630,7 @@ class Book(models.Model): new_fragment.save() new_fragment.tags = set(meta_tags + themes + [book_tag] + ancestor_tags) self.save() + self.html_built.send(sender=self) return True return False @@ -618,7 +649,7 @@ class Book(models.Model): xml_file.close() @classmethod - def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True): + def from_text_and_meta(cls, raw_file, book_info, overwrite=False, build_epub=True, build_txt=True, build_pdf=True): import re # check for parts before we do anything @@ -691,6 +722,9 @@ class Book(models.Model): if not settings.NO_BUILD_EPUB and build_epub: book.root_ancestor.build_epub() + if not settings.NO_BUILD_PDF and build_pdf: + book.root_ancestor.build_pdf() + book_descendants = list(book.children.all()) # add l-tag to descendants and their fragments # delete unnecessary EPUB files @@ -702,14 +736,18 @@ class Book(models.Model): fragment.tags = set(list(fragment.tags) + [book_tag]) book_descendants += list(child_book.children.all()) + book.save() + # refresh cache book.reset_tag_counter() book.reset_theme_counter() - book.save() return book 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: @@ -717,11 +755,13 @@ class Book(models.Model): @property def tag_counter(self): - cache_key = "Book.tag_counter/%d" % self.id - tags = cache.get(cache_key) - print 'tag' + if self.id: + cache_key = "Book.tag_counter/%d" % self.id + tags = cache.get(cache_key) + else: + tags = None + if tags is None: - print 'tag manual' tags = {} for child in self.children.all().order_by(): for tag_pk, value in child.tag_counter.iteritems(): @@ -729,10 +769,14 @@ class Book(models.Model): for tag in self.tags.exclude(category__in=('book', 'theme', 'set')).order_by(): tags[tag.pk] = 1 - cache.set(cache_key, tags) + 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: @@ -740,17 +784,20 @@ class Book(models.Model): @property def theme_counter(self): - cache_key = "Book.theme_counter/%d" % self.id - tags = cache.get(cache_key) - print 'theme' + if self.id: + cache_key = "Book.theme_counter/%d" % self.id + tags = cache.get(cache_key) + else: + tags = None + if tags is None: - print 'theme manual' 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 - cache.set(cache_key, tags) + if self.id: + cache.set(cache_key, tags, CACHE_FOREVER) return tags def pretty_title(self, html_links=False): @@ -808,22 +855,27 @@ class Fragment(models.Model): 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): - cache_key = "Fragment.short_html/%d/%s" % (self.id, get_language()) - short_html = cache.get(cache_key) + 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: - print 'f.s from cache' return mark_safe(short_html) else: - print 'f.s manual' short_html = unicode(render_to_string('catalogue/fragment_short.html', {'fragment': self})) - cache.set(cache_key, short_html) + if self.id: + cache.set(cache_key, short_html, CACHE_FOREVER) return mark_safe(short_html)