# This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later.
# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
#
-import itertools
-import re
-
-from django.core.urlresolvers import reverse
from django.db import models
-from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
-from django.template.loader import render_to_string
-
-from dvcs import models as dvcs_models
-
import logging
logger = logging.getLogger("fnp.wiki")
-RE_TRIM_BEGIN = re.compile("^<!-- TRIM_BEGIN -->$", re.M)
-RE_TRIM_END = re.compile("^<!-- TRIM_END -->$", re.M)
-
-
-class Book(models.Model):
- """ A document edited on the wiki """
-
- title = models.CharField(_('title'), max_length=255)
- slug = models.SlugField(_('slug'), max_length=128, unique=True)
- gallery = models.CharField(_('scan gallery name'), max_length=255, blank=True)
-
- parent = models.ForeignKey('self', null=True, blank=True, verbose_name=_('parent'), related_name="children")
- parent_number = models.IntegerField(_('parent number'), null=True, blank=True, db_index=True)
-
- _list_html = models.TextField(editable=False, null=True)
-
- class NoTextError(BaseException):
- pass
-
- class Meta:
- ordering = ['parent_number', 'title']
- verbose_name = _('book')
- verbose_name_plural = _('books')
-
- def __unicode__(self):
- return self.title
-
- def save(self, reset_list_html=True, *args, **kwargs):
- if reset_list_html:
- self._list_html = None
- return super(Book, self).save(*args, **kwargs)
-
- @classmethod
- def create(cls, creator=None, text=u'', *args, **kwargs):
- """
- >>> Book.create(slug='x', text='abc').materialize()
- 'abc'
- """
- instance = cls(*args, **kwargs)
- instance.save()
- instance[0].commit(author=creator, text=text)
- return instance
-
- def __iter__(self):
- return iter(self.chunk_set.all())
-
- def __getitem__(self, chunk):
- return self.chunk_set.all()[chunk]
-
- def __len__(self):
- return self.chunk_set.count()
-
- def list_html(self):
- if self._list_html is None:
- print 'rendering', self.title
- self._list_html = render_to_string('wiki/document_list_item.html',
- {'book': self})
- self.save(reset_list_html=False)
- return mark_safe(self._list_html)
-
- @staticmethod
- def trim(text, trim_begin=True, trim_end=True):
- """
- Cut off everything before RE_TRIM_BEGIN and after RE_TRIM_END, so
- that eg. one big XML file can be compiled from many small XML files.
- """
- if trim_begin:
- text = RE_TRIM_BEGIN.split(text, maxsplit=1)[-1]
- if trim_end:
- text = RE_TRIM_END.split(text, maxsplit=1)[0]
- return text
-
- @staticmethod
- def publish_tag():
- return dvcs_models.Tag.get('publish')
-
- def materialize(self, tag=None):
- """
- Get full text of the document compiled from chunks.
- Takes the current versions of all texts for now, but it should
- be possible to specify a tag or a point in time for compiling.
-
- First non-empty text's beginning isn't trimmed,
- and last non-empty text's end isn't trimmed.
- """
- if tag:
- changes = [chunk.last_tagged(tag) for chunk in self]
- else:
- changes = [chunk.head for chunk in self]
- if None in changes:
- raise self.NoTextError('Some chunks have no available text.')
- texts = []
- trim_begin = False
- text = ''
- for chunk in changes:
- next_text = chunk.materialize()
- if not next_text:
- continue
- if text:
- # trim the end, because there's more non-empty text
- # don't trim beginning, if `text' is the first non-empty part
- texts.append(self.trim(text, trim_begin=trim_begin))
- trim_begin = True
- text = next_text
- # don't trim the end, because there's no more text coming after `text'
- # only trim beginning if it's not still the first non-empty
- texts.append(self.trim(text, trim_begin=trim_begin, trim_end=False))
- return "".join(texts)
-
- def publishable(self):
- if not len(self):
- return False
- for chunk in self:
- if not chunk.publishable():
- return False
- return True
-
- @staticmethod
- def listener_create(sender, instance, created, **kwargs):
- if created:
- instance.chunk_set.create(number=1, slug='1')
-
-models.signals.post_save.connect(Book.listener_create, sender=Book)
-
-
-class Chunk(dvcs_models.Document):
- """ An editable chunk of text. Every Book text is divided into chunks. """
-
- book = models.ForeignKey(Book)
- number = models.IntegerField()
- slug = models.SlugField()
- comment = models.CharField(max_length=255)
-
- class Meta:
- unique_together = [['book', 'number'], ['book', 'slug']]
- ordering = ['number']
-
- def __unicode__(self):
- return "%d-%d: %s" % (self.book_id, self.number, self.comment)
-
- def get_absolute_url(self):
- return reverse("wiki_editor", args=[self.book.slug, self.slug])
-
- @classmethod
- def get(cls, slug, chunk=None):
- if chunk is None:
- return cls.objects.get(book__slug=slug, number=1)
- else:
- return cls.objects.get(book__slug=slug, slug=chunk)
-
- def pretty_name(self):
- return "%s, %s (%d/%d)" % (self.book.title, self.comment,
- self.number, len(self.book))
-
- def publishable(self):
- return self.last_tagged(Book.publish_tag())
-
- @staticmethod
- def listener_saved(sender, instance, created, **kwargs):
- if instance.book:
- # save book so that its _list_html is reset
- instance.book.save()
-
-models.signals.post_save.connect(Chunk.listener_saved, sender=Chunk)
-
-
class Theme(models.Model):
name = models.CharField(_('name'), max_length=50, unique=True)
fnp / redakcja.git / blobdiff