# -*- 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.
+#
import tempfile
import zipfile
-
+import sys
+import pprint
+import traceback
+import re
+import itertools
+from operator import itemgetter
+
+from django.conf import settings
from django.template import RequestContext
from django.shortcuts import render_to_response, get_object_or_404
from django.http import HttpResponse, HttpResponseRedirect, Http404
from django.core.urlresolvers import reverse
from django.db.models import Q
-from django.contrib.auth.decorators import login_required
+from django.contrib.auth.decorators import login_required, user_passes_test
from django.utils.datastructures import SortedDict
from django.views.decorators.http import require_POST
from django.contrib import auth
from django.utils import simplejson
from django.utils.functional import Promise
from django.utils.encoding import force_unicode
+from django.utils.http import urlquote_plus
from django.views.decorators import cache
+from django.utils.translation import ugettext as _
+from django.views.generic.list_detail import object_list
from catalogue import models
from catalogue import forms
from newtagging import views as newtagging_views
+staff_required = user_passes_test(lambda user: user.is_staff)
+
+
class LazyEncoder(simplejson.JSONEncoder):
def default(self, obj):
if isinstance(obj, Promise):
return obj
-def main_page(request):
+def main_page(request):
if request.user.is_authenticated():
shelves = models.Tag.objects.filter(category='set', user=request.user)
new_set_form = forms.NewSetForm()
- extra_where = 'NOT catalogue_tag.category = "set"'
+ extra_where = "NOT catalogue_tag.category = 'set'"
tags = models.Tag.objects.usage_for_model(models.Book, counts=True, extra={'where': [extra_where]})
fragment_tags = models.Tag.objects.usage_for_model(models.Fragment, counts=True,
- extra={'where': ['catalogue_tag.category = "theme"'] + [extra_where]})
+ extra={'where': ["catalogue_tag.category = 'theme'"] + [extra_where]})
categories = split_tags(tags)
-
+
form = forms.SearchForm()
return render_to_response('catalogue/main_page.html', locals(),
context_instance=RequestContext(request))
def book_list(request):
books = models.Book.objects.all()
form = forms.SearchForm()
-
+
books_by_first_letter = SortedDict()
for book in books:
books_by_first_letter.setdefault(book.title[0], []).append(book)
-
+
return render_to_response('catalogue/book_list.html', locals(),
context_instance=RequestContext(request))
+def differentiate_tags(request, tags, ambiguous_slugs):
+ beginning = '/'.join(tag.url_chunk for tag in tags)
+ unparsed = '/'.join(ambiguous_slugs[1:])
+ options = []
+ for tag in models.Tag.objects.exclude(category='book').filter(slug=ambiguous_slugs[0]):
+ options.append({
+ 'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
+ 'tags': [tag]
+ })
+ return render_to_response('catalogue/differentiate_tags.html',
+ {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
+ context_instance=RequestContext(request))
+
+
def tagged_object_list(request, tags=''):
- # Prevent DoS attacks on our database
- if len(tags.split('/')) > 6:
- raise Http404
-
try:
tags = models.Tag.get_tag_list(tags)
except models.Tag.DoesNotExist:
raise Http404
-
- model = models.Book
- shelf = [tag for tag in tags if tag.category == 'set']
- shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
- theme_is_set = len([tag for tag in tags if tag.category == 'theme']) > 0
+ except models.Tag.MultipleObjectsReturned, e:
+ return differentiate_tags(request, e.tags, e.ambiguous_slugs)
+
+ try:
+ if len(tags) > settings.MAX_TAG_LIST:
+ raise Http404
+ except AttributeError:
+ pass
+
+ if len([tag for tag in tags if tag.category == 'book']):
+ raise Http404
+
+ theme_is_set = [tag for tag in tags if tag.category == 'theme']
+ shelf_is_set = len(tags) == 1 and tags[0].category == 'set'
+ my_shelf_is_set = shelf_is_set and request.user.is_authenticated() and request.user == tags[0].user
+
+ objects = only_author = pd_counter = None
+ categories = {}
+
if theme_is_set:
- model = models.Fragment
+ shelf_tags = [tag for tag in tags if tag.category == 'set']
+ fragment_tags = [tag for tag in tags if tag.category != 'set']
+ fragments = models.Fragment.tagged.with_all(fragment_tags)
+
+ if shelf_tags:
+ books = models.Book.tagged.with_all(shelf_tags).order_by()
+ l_tags = [book.book_tag() for book in books]
+ fragments = models.Fragment.tagged.with_any(l_tags, fragments)
+
+ # newtagging goes crazy if we just try:
+ #related_tags = models.Tag.objects.usage_for_queryset(fragments, counts=True,
+ # extra={'where': ["catalogue_tag.category != 'book'"]})
+ fragment_keys = [fragment.pk for fragment in fragments]
+ if fragment_keys:
+ related_tags = models.Fragment.tags.usage(counts=True,
+ filters={'pk__in': fragment_keys},
+ extra={'where': ["catalogue_tag.category != 'book'"]})
+ related_tags = (tag for tag in related_tags if tag not in fragment_tags)
+ categories = split_tags(related_tags)
+
+ objects = fragments
+ else:
+ # get relevant books and their tags
+ objects = models.Book.tagged.with_all(tags).order_by()
+ l_tags = [book.book_tag() for book in objects]
+ # eliminate descendants
+ descendants_keys = [book.pk for book in models.Book.tagged.with_any(l_tags)]
+ if descendants_keys:
+ objects = objects.exclude(pk__in=descendants_keys)
+
+ # get related tags from `tag_counter` and `theme_counter`
+ related_counts = {}
+ tags_pks = [tag.pk for tag in tags]
+ for book in objects:
+ for tag_pk, value in itertools.chain(book.tag_counter.iteritems(), book.theme_counter.iteritems()):
+ if tag_pk in tags_pks:
+ continue
+ related_counts[tag_pk] = related_counts.get(tag_pk, 0) + value
+ related_tags = models.Tag.objects.filter(pk__in=related_counts.keys())
+ related_tags = [tag for tag in related_tags if tag not in tags]
+ for tag in related_tags:
+ tag.count = related_counts[tag.pk]
+
+ categories = split_tags(related_tags)
+ del related_tags
- user_is_owner = (len(shelf) and request.user.is_authenticated() and request.user == shelf[0].user)
-
- extra_where = 'NOT catalogue_tag.category = "set"'
- related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
- categories = split_tags(related_tags)
+ if not objects:
+ only_author = len(tags) == 1 and tags[0].category == 'author'
+ pd_counter = only_author and tags[0].goes_to_pd()
+ objects = models.Book.objects.none()
- if not (theme_is_set or shelf_is_set):
- model=models.Book.objects.filter(parent=None)
-
- return newtagging_views.tagged_object_list(
+ return object_list(
request,
- tag_model=models.Tag,
- queryset_or_model=model,
- tags=tags,
+ objects,
template_name='catalogue/tagged_object_list.html',
- extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set, 'user_is_owner': user_is_owner },
+ extra_context={
+ 'categories': categories,
+ 'shelf_is_set': shelf_is_set,
+ 'only_author': only_author,
+ 'pd_counter': pd_counter,
+ 'user_is_owner': my_shelf_is_set,
+ 'formats_form': forms.DownloadFormatsForm(),
+
+ 'tags': tags,
+ }
)
+def book_fragments(request, book_slug, theme_slug):
+ book = get_object_or_404(models.Book, slug=book_slug)
+ book_tag = get_object_or_404(models.Tag, slug='l-' + book_slug, category='book')
+ theme = get_object_or_404(models.Tag, slug=theme_slug, category='theme')
+ fragments = models.Fragment.tagged.with_all([book_tag, theme])
+
+ form = forms.SearchForm()
+ return render_to_response('catalogue/book_fragments.html', locals(),
+ context_instance=RequestContext(request))
+
+
def book_detail(request, slug):
- book = get_object_or_404(models.Book, slug=slug)
+ try:
+ book = models.Book.objects.get(slug=slug)
+ except models.Book.DoesNotExist:
+ return book_stub_detail(request, slug)
+
+ book_tag = book.book_tag()
tags = list(book.tags.filter(~Q(category='set')))
categories = split_tags(tags)
book_children = book.children.all().order_by('parent_number')
-
+ extra_where = "catalogue_tag.category = 'theme'"
+ book_themes = models.Tag.objects.related_for_model(book_tag, models.Fragment, counts=True, extra={'where': [extra_where]})
+ extra_info = book.get_extra_info_value()
+
form = forms.SearchForm()
return render_to_response('catalogue/book_detail.html', locals(),
context_instance=RequestContext(request))
+def book_stub_detail(request, slug):
+ book = get_object_or_404(models.BookStub, slug=slug)
+ pd_counter = book.pd
+ form = forms.SearchForm()
+
+ return render_to_response('catalogue/book_stub_detail.html', locals(),
+ context_instance=RequestContext(request))
+
+
def book_text(request, slug):
book = get_object_or_404(models.Book, slug=slug)
book_themes = {}
for fragment in book.fragments.all():
for theme in fragment.tags.filter(category='theme'):
book_themes.setdefault(theme, []).append(fragment)
-
+
book_themes = book_themes.items()
book_themes.sort(key=lambda s: s[0].sort_key)
return render_to_response('catalogue/book_text.html', locals(),
# ==========
# = Search =
# ==========
-def _tags_starting_with(prefix, user):
- books = models.Book.objects.filter(title__icontains=prefix)
- tags = models.Tag.objects.filter(name__icontains=prefix)
- if user.is_authenticated():
- tags = tags.filter(~Q(category='set') | Q(user=user))
+
+def _no_diacritics_regexp(query):
+ """ returns a regexp for searching for a query without diacritics
+
+ should be locale-aware """
+ names = {
+ u'a':u'aąĄ', u'c':u'cćĆ', u'e':u'eęĘ', u'l': u'lłŁ', u'n':u'nńŃ', u'o':u'oóÓ', u's':u'sśŚ', u'z':u'zźżŹŻ',
+ u'ą':u'ąĄ', u'ć':u'ćĆ', u'ę':u'ęĘ', u'ł': u'łŁ', u'ń':u'ńŃ', u'ó':u'óÓ', u'ś':u'śŚ', u'ź':u'źŹ', u'ż':u'żŻ'
+ }
+ def repl(m):
+ l = m.group()
+ return u"(%s)" % '|'.join(names[l])
+ return re.sub(u'[%s]' % (u''.join(names.keys())), repl, query)
+
+def unicode_re_escape(query):
+ """ Unicode-friendly version of re.escape """
+ return re.sub('(?u)(\W)', r'\\\1', query)
+
+def _word_starts_with(name, prefix):
+ """returns a Q object getting models having `name` contain a word
+ starting with `prefix`
+
+ We define word characters as alphanumeric and underscore, like in JS.
+
+ Works for MySQL, PostgreSQL, Oracle.
+ For SQLite, _sqlite* version is substituted for this.
+ """
+ kwargs = {}
+
+ prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
+ # can't use [[:<:]] (word start),
+ # but we want both `xy` and `(xy` to catch `(xyz)`
+ kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
+
+ return Q(**kwargs)
+
+
+def _sqlite_word_starts_with(name, prefix):
+ """ version of _word_starts_with for SQLite
+
+ SQLite in Django uses Python re module
+ """
+ kwargs = {}
+ prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
+ kwargs['%s__iregex' % name] = ur"(^|(?<=[^\wąćęłńóśźżĄĆĘŁŃÓŚŹŻ]))%s" % prefix
+ return Q(**kwargs)
+
+
+if settings.DATABASE_ENGINE == 'sqlite3':
+ _word_starts_with = _sqlite_word_starts_with
+
+
+def _tags_starting_with(prefix, user=None):
+ prefix = prefix.lower()
+ book_stubs = models.BookStub.objects.filter(_word_starts_with('title', prefix))
+ books = models.Book.objects.filter(_word_starts_with('title', prefix))
+ book_stubs = filter(lambda x: x not in books, book_stubs)
+ tags = models.Tag.objects.filter(_word_starts_with('name', prefix))
+ if user and user.is_authenticated():
+ tags = tags.filter(~Q(category='book') & (~Q(category='set') | Q(user=user)))
else:
- tags = tags.filter(~Q(category='set'))
+ tags = tags.filter(~Q(category='book') & ~Q(category='set'))
+
+ return list(books) + list(tags) + list(book_stubs)
+
+
+def _get_result_link(match, tag_list):
+ if isinstance(match, models.Book) or isinstance(match, models.BookStub):
+ return match.get_absolute_url()
+ else:
+ return reverse('catalogue.views.tagged_object_list',
+ kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])}
+ )
+
+def _get_result_type(match):
+ if isinstance(match, models.Book) or isinstance(match, models.BookStub):
+ type = 'book'
+ else:
+ type = match.category
+ return dict(models.TAG_CATEGORIES)[type]
+
+
+
+def find_best_matches(query, user=None):
+ """ Finds a Book, Tag or Bookstub best matching a query.
+
+ Returns a with:
+ - zero elements when nothing is found,
+ - one element when a best result is found,
+ - more then one element on multiple exact matches
+
+ Raises a ValueError on too short a query.
+ """
+
+ query = query.lower()
+ if len(query) < 2:
+ raise ValueError("query must have at least two characters")
+
+ result = tuple(_tags_starting_with(query, user))
+ exact_matches = tuple(res for res in result if res.name.lower() == query)
+ if exact_matches:
+ return exact_matches
+ else:
+ return result[:1]
- return list(books) + list(tags)
-
def search(request):
tags = request.GET.get('tags', '')
prefix = request.GET.get('q', '')
- # Prefix must have at least 2 characters
- if len(prefix) < 2:
- return HttpResponse('')
-
+
try:
tag_list = models.Tag.get_tag_list(tags)
except:
tag_list = []
-
- result = _tags_starting_with(prefix, request.user)
- if len(result) > 0:
- tag = result[0]
- if isinstance(tag, models.Book):
- return HttpResponseRedirect(tag.get_absolute_url())
- else:
- tag_list.append(tag)
-
- return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
- kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
- ))
+
+ try:
+ result = find_best_matches(prefix, request.user)
+ except ValueError:
+ return render_to_response('catalogue/search_too_short.html', {'tags':tag_list, 'prefix':prefix},
+ context_instance=RequestContext(request))
+
+ if len(result) == 1:
+ return HttpResponseRedirect(_get_result_link(result[0], tag_list))
+ elif len(result) > 1:
+ return render_to_response('catalogue/search_multiple_hits.html',
+ {'tags':tag_list, 'prefix':prefix, 'results':((x, _get_result_link(x, tag_list), _get_result_type(x)) for x in result)},
+ context_instance=RequestContext(request))
+ else:
+ return render_to_response('catalogue/search_no_hits.html', {'tags':tag_list, 'prefix':prefix},
+ context_instance=RequestContext(request))
def tags_starting_with(request):
# Prefix must have at least 2 characters
if len(prefix) < 2:
return HttpResponse('')
-
+
return HttpResponse('\n'.join(tag.name for tag in _tags_starting_with(prefix, request.user)))
book = get_object_or_404(models.Book, slug=slug)
user_sets = models.Tag.objects.filter(category='set', user=request.user)
book_sets = book.tags.filter(category='set', user=request.user)
-
+
if not request.user.is_authenticated():
- return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
-
+ return HttpResponse(_('<p>To maintain your shelves you need to be logged in.</p>'))
+
if request.method == 'POST':
form = forms.ObjectSetsForm(book, request.user, request.POST)
if form.is_valid():
old_shelves = list(book.tags.filter(category='set'))
new_shelves = [models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']]
-
+
for shelf in [shelf for shelf in old_shelves if shelf not in new_shelves]:
shelf.book_count -= 1
shelf.save()
-
+
for shelf in [shelf for shelf in new_shelves if shelf not in old_shelves]:
shelf.book_count += 1
shelf.save()
-
+
book.tags = new_shelves + list(book.tags.filter(~Q(category='set') | ~Q(user=request.user)))
if request.is_ajax():
- return HttpResponse('<p>Półki zostały zapisane.</p>')
+ return HttpResponse(_('<p>Shelves were sucessfully saved.</p>'))
else:
return HttpResponseRedirect('/')
else:
form = forms.ObjectSetsForm(book, request.user)
new_set_form = forms.NewSetForm()
-
+
return render_to_response('catalogue/book_sets.html', locals(),
context_instance=RequestContext(request))
def remove_from_shelf(request, shelf, book):
book = get_object_or_404(models.Book, slug=book)
shelf = get_object_or_404(models.Tag, slug=shelf, category='set', user=request.user)
-
- models.Tag.objects.remove_tag(book, shelf)
-
- shelf.book_count -= 1
- shelf.save()
-
- return HttpResponse('Usunieto')
+
+ if shelf in book.tags:
+ models.Tag.objects.remove_tag(book, shelf)
+
+ shelf.book_count -= 1
+ shelf.save()
+
+ return HttpResponse(_('Book was successfully removed from the shelf'))
+ else:
+ return HttpResponse(_('This book is not on the shelf'))
+
+
+def collect_books(books):
+ """
+ Returns all real books in collection.
+ """
+ result = []
+ for book in books:
+ if len(book.children.all()) == 0:
+ result.append(book)
+ else:
+ result += collect_books(book.children.all())
+ return result
@cache.never_cache
be used for large dynamic PDF files.
"""
shelf = get_object_or_404(models.Tag, slug=slug, category='set')
-
+
+ formats = []
+ form = forms.DownloadFormatsForm(request.GET)
+ if form.is_valid():
+ formats = form.cleaned_data['formats']
+ if len(formats) == 0:
+ formats = ['pdf', 'epub', 'odt', 'txt', 'mp3', 'ogg']
+
# Create a ZIP archive
- temp = temp = tempfile.TemporaryFile()
+ temp = tempfile.TemporaryFile()
archive = zipfile.ZipFile(temp, 'w')
-
- # Collect all books to include in ZIP archive
- def collect_books(books):
- result = []
- for book in books:
- if len(book.children.all()) == 0:
- result.append(book)
- else:
- result += collect_books(book.children.all())
- return result
-
+
for book in collect_books(models.Book.tagged.with_all(shelf)):
- if book.pdf_file:
+ if 'pdf' in formats and book.pdf_file:
filename = book.pdf_file.path
archive.write(filename, str('%s.pdf' % book.slug))
- if book.odt_file:
+ if 'epub' in formats and book.epub_file:
+ filename = book.epub_file.path
+ archive.write(filename, str('%s.epub' % book.slug))
+ if 'odt' in formats and book.odt_file:
filename = book.odt_file.path
archive.write(filename, str('%s.odt' % book.slug))
- if book.txt_file:
+ if 'txt' in formats and book.txt_file:
filename = book.txt_file.path
archive.write(filename, str('%s.txt' % book.slug))
+ if 'mp3' in formats and book.mp3_file:
+ filename = book.mp3_file.path
+ archive.write(filename, str('%s.mp3' % book.slug))
+ if 'ogg' in formats and book.ogg_file:
+ filename = book.ogg_file.path
+ archive.write(filename, str('%s.ogg' % book.slug))
archive.close()
-
+
response = HttpResponse(content_type='application/zip', mimetype='application/x-zip-compressed')
response['Content-Disposition'] = 'attachment; filename=%s.zip' % shelf.sort_key
response['Content-Length'] = temp.tell()
-
+
temp.seek(0)
response.write(temp.read())
return response
+@cache.never_cache
+def shelf_book_formats(request, shelf):
+ """"
+ Returns a list of formats of books in shelf.
+ """
+ shelf = get_object_or_404(models.Tag, slug=shelf, category='set')
+
+ formats = {'pdf': False, 'epub': False, 'odt': False, 'txt': False, 'mp3': False, 'ogg': False}
+
+ for book in collect_books(models.Book.tagged.with_all(shelf)):
+ if book.pdf_file:
+ formats['pdf'] = True
+ if book.epub_file:
+ formats['epub'] = True
+ if book.odt_file:
+ formats['odt'] = True
+ if book.txt_file:
+ formats['txt'] = True
+ if book.mp3_file:
+ formats['mp3'] = True
+ if book.ogg_file:
+ formats['ogg'] = True
+
+ return HttpResponse(LazyEncoder().encode(formats))
+
+
@login_required
@require_POST
@cache.never_cache
new_set = new_set_form.save(request.user)
if request.is_ajax():
- return HttpResponse(u'<p>Półka <strong>%s</strong> została utworzona</p>' % new_set)
+ return HttpResponse(_('<p>Shelf <strong>%s</strong> was successfully created</p>') % new_set)
else:
return HttpResponseRedirect('/')
user_set.delete()
if request.is_ajax():
- return HttpResponse(u'<p>Półka <strong>%s</strong> została usunięta</p>' % user_set.name)
+ return HttpResponse(_('<p>Shelf <strong>%s</strong> was successfully removed</p>') % user_set.name)
else:
return HttpResponseRedirect('/')
if registration_form.is_valid():
user = registration_form.save()
user = auth.authenticate(
- username=registration_form.cleaned_data['username'],
+ username=registration_form.cleaned_data['username'],
password=registration_form.cleaned_data['password1']
)
auth.login(request, user)
@cache.never_cache
def logout_then_redirect(request):
auth.logout(request)
- return HttpResponseRedirect(request.GET.get('next', '/'))
+ return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
+
+
+# =========
+# = Admin =
+# =========
+@login_required
+@staff_required
+def import_book(request):
+ """docstring for import_book"""
+ book_import_form = forms.BookImportForm(request.POST, request.FILES)
+ if book_import_form.is_valid():
+ try:
+ book_import_form.save()
+ except:
+ info = sys.exc_info()
+ exception = pprint.pformat(info[1])
+ tb = '\n'.join(traceback.format_tb(info[2]))
+ _('Today is %(month)s, %(day)s.') % {'month': m, 'day': d}
+ return HttpResponse(_("An error occurred: %(exception)s\n\n%(tb)s") % {'exception':exception, 'tb':tb}, mimetype='text/plain')
+ return HttpResponse(_("Book imported successfully"))
+ else:
+ return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
+
+
+
+def clock(request):
+ """ Provides server time for jquery.countdown,
+ in a format suitable for Date.parse()
+ """
+ from datetime import datetime
+ return HttpResponse(datetime.now().strftime('%Y/%m/%d %H:%M:%S'))
fnp / wolnelektury.git / blobdiff