X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/d1d38b4cd4c93032c85924cb38d0963cfed0fe7e..0c613164e94ea79fce559b2b1632691986a84f25:/apps/catalogue/models.py diff --git a/apps/catalogue/models.py b/apps/catalogue/models.py index 7eefce745..a9445a24f 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, create_zip_task, remove_zip 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__() @@ -278,7 +283,7 @@ class BookMedia(models.Model): class Book(models.Model): title = models.CharField(_('title'), max_length=120) - sort_key = models.CharField(_('sort_key'), max_length=120, db_index=True, editable=False) + 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) @@ -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)) @@ -405,8 +417,11 @@ 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: return mark_safe(short_html) @@ -432,7 +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 @@ -487,34 +504,40 @@ 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 + from tempfile import NamedTemporaryFile + import os + + 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) + 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 @@ -598,9 +621,39 @@ 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 + @staticmethod + def zip_epub(): + books = Book.objects.all() + + paths = filter(lambda x: x is not None, + map(lambda b: b.epub_file and b.epub_file.path or None, books)) + result = create_zip_task.delay(paths, settings.ALL_EPUB_ZIP) + return settings.MEDIA_URL + result.wait() + + @staticmethod + def zip_pdf(): + books = Book.objects.all() + + paths = filter(lambda x: x is not None, + map(lambda b: b.pdf_file and b.pdf_file.path or None, books)) + result = create_zip_task.delay(paths, settings.ALL_PDF_ZIP) + return settings.MEDIA_URL + result.wait() + + def zip_audiobooks(self): + bm = BookMedia.objects.filter(book=self) + paths = map(lambda bm: bm.file.path, bm) + result = create_zip_task.delay(paths, self.slug) + + return settings.MEDIA_URL + result.wait() + + def clean_zip_files(self): + remove_zip(self.slug) + remove_zip(settings.ALL_EPUB_ZIP) + remove_zip(settings.ALL_PDF_ZIP) @classmethod def from_xml_file(cls, xml_file, **kwargs): @@ -616,7 +669,7 @@ 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 @@ -689,6 +742,9 @@ 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 @@ -700,14 +756,18 @@ 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: @@ -715,8 +775,12 @@ class Book(models.Model): @property def tag_counter(self): - cache_key = "Book.tag_counter/%d" % self.id - tags = cache.get(cache_key) + 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(): @@ -725,10 +789,14 @@ 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: @@ -736,15 +804,20 @@ class Book(models.Model): @property def theme_counter(self): - cache_key = "Book.theme_counter/%d" % self.id - tags = cache.get(cache_key) + 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 - cache.set(cache_key, tags) + if self.id: + cache.set(cache_key, tags, CACHE_FOREVER) return tags def pretty_title(self, html_links=False): @@ -802,20 +875,27 @@ 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: return mark_safe(short_html) else: 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)