+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)
+
+ class Meta:
+ ordering = ['parent_number', 'title']
+ verbose_name = _('book')
+ verbose_name_plural = _('books')
+
+ def __unicode__(self):
+ return self.title
+
+ @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.chunk_set.all()[0].doc.commit(author=creator, text=text)
+ return instance
+
+ @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
+
+ def materialize(self):
+ """
+ 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.
+ """
+ texts = []
+ trim_begin = False
+ text = ''
+ for chunk in self.chunk_set.all():
+ next_text = chunk.doc.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)
+
+ @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(models.Model):
+ """ 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)
+ doc = models.ForeignKey(dvcs_models.Document, editable=False, unique=True, null=True)
+
+ 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 save(self, *args, **kwargs):
+ if self.doc is None:
+ self.doc = dvcs_models.Document.objects.create()
+ super(Chunk, self).save(*args, **kwargs)
+
+ @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, self.book.chunk_set.count())
+
+
+
+
+'''
+from wiki import settings, constants
+from slughifi import slughifi
fnp / redakcja.git / blobdiff