--- /dev/null
+# -*- coding: utf-8 -*-
+
+from optparse import make_option
+import sys
+
+from django.contrib.auth.models import User
+from django.core.management.base import BaseCommand
+from django.core.management.color import color_style
+from django.db import transaction
+
+from catalogue.models import Book
+
+
+def common_prefix(texts):
+ common = []
+
+ min_len = min(len(text) for text in texts)
+ for i in range(min_len):
+ chars = list(set([text[i] for text in texts]))
+ if len(chars) > 1:
+ break
+ common.append(chars[0])
+ return "".join(common)
+
+
+class Command(BaseCommand):
+ option_list = BaseCommand.option_list + (
+ make_option('-s', '--slug', dest='new_slug', metavar='SLUG',
+ help='New slug of the merged book (defaults to common part of all slugs).'),
+ make_option('-t', '--title', dest='new_title', metavar='TITLE',
+ help='New title of the merged book (defaults to common part of all titles).'),
+ make_option('-q', '--quiet', action='store_false', dest='verbose', default=True,
+ help='Less output'),
+ make_option('-g', '--guess', action='store_true', dest='guess', default=False,
+ help='Try to guess what merges are needed (but do not apply them).'),
+ make_option('-d', '--dry-run', action='store_true', dest='dry_run', default=False,
+ help='Dry run: do not actually change anything.'),
+ make_option('-f', '--force', action='store_true', dest='force', default=False,
+ help='On slug conflict, hide the original book to archive.'),
+ )
+ help = 'Merges multiple books into one.'
+ args = '[slug]...'
+
+
+ def print_guess(self, dry_run=True, force=False):
+ from collections import defaultdict
+ from pipes import quote
+ import re
+
+ def read_slug(slug):
+ res = []
+ res.append((re.compile(ur'__?(przedmowa)$'), -1))
+ res.append((re.compile(ur'__?(cz(esc)?|ksiega|rozdzial)__?(?P<n>\d*)$'), None))
+ res.append((re.compile(ur'__?(rozdzialy__?)?(?P<n>\d*)-'), None))
+
+ for r, default in res:
+ m = r.search(slug)
+ if m:
+ start = m.start()
+ try:
+ return int(m.group('n')), slug[:start]
+ except IndexError:
+ return default, slug[:start]
+ return None, slug
+
+ def file_to_title(fname):
+ """ Returns a title-like version of a filename. """
+ parts = (p.replace('_', ' ').title() for p in fname.split('__'))
+ return ' / '.join(parts)
+
+ merges = defaultdict(list)
+ slugs = []
+ for b in Book.objects.all():
+ slugs.append(b.slug)
+ n, ns = read_slug(b.slug)
+ if n is not None:
+ merges[ns].append((n, b))
+
+ conflicting_slugs = []
+ for slug in sorted(merges.keys()):
+ merge_list = sorted(merges[slug])
+ if len(merge_list) < 2:
+ continue
+
+ merge_slugs = [b.slug for i, b in merge_list]
+ if slug in slugs and slug not in merge_slugs:
+ conflicting_slugs.append(slug)
+
+ title = file_to_title(slug)
+ print "./manage.py merge_books %s%s--title=%s --slug=%s \\\n %s\n" % (
+ '--dry-run ' if dry_run else '',
+ '--force ' if force else '',
+ quote(title), slug,
+ " \\\n ".join(merge_slugs)
+ )
+
+ if conflicting_slugs:
+ if force:
+ print self.style.NOTICE('# These books will be archived:')
+ else:
+ print self.style.ERROR('# ERROR: Conflicting slugs:')
+ for slug in conflicting_slugs:
+ print '#', slug
+
+
+ def handle(self, *slugs, **options):
+
+ self.style = color_style()
+
+ force = options.get('force')
+ guess = options.get('guess')
+ dry_run = options.get('dry_run')
+ new_slug = options.get('new_slug').decode('utf-8')
+ new_title = options.get('new_title').decode('utf-8')
+ verbose = options.get('verbose')
+
+ if guess:
+ if slugs:
+ print "Please specify either slugs, or --guess."
+ return
+ else:
+ self.print_guess(dry_run, force)
+ return
+ if not slugs:
+ print "Please specify some book slugs"
+ return
+
+ # Start transaction management.
+ transaction.enter_transaction_management()
+
+ books = [Book.objects.get(slug=slug) for slug in slugs]
+ common_slug = common_prefix(slugs)
+ common_title = common_prefix([b.title for b in books])
+
+ if not new_title:
+ new_title = common_title
+ elif common_title.startswith(new_title):
+ common_title = new_title
+
+ if not new_slug:
+ new_slug = common_slug
+ elif common_slug.startswith(new_slug):
+ common_slug = new_slug
+
+ if slugs[0] != new_slug and Book.objects.filter(slug=new_slug).exists():
+ self.style.ERROR('Book already exists, skipping!')
+
+
+ if dry_run and verbose:
+ print self.style.NOTICE('DRY RUN: nothing will be changed.')
+ print
+
+ if verbose:
+ print "New title:", self.style.NOTICE(new_title)
+ print "New slug:", self.style.NOTICE(new_slug)
+ print
+
+ for i, book in enumerate(books):
+ chunk_titles = []
+ chunk_slugs = []
+
+ book_title = book.title[len(common_title):].replace(' / ', ' ').lstrip()
+ book_slug = book.slug[len(common_slug):].replace('__', '_').lstrip('-_')
+ for j, chunk in enumerate(book):
+ if j:
+ new_chunk_title = book_title + '_%d' % j
+ new_chunk_slug = book_slug + '_%d' % j
+ else:
+ new_chunk_title, new_chunk_slug = book_title, book_slug
+
+ chunk_titles.append(new_chunk_title)
+ chunk_slugs.append(new_chunk_slug)
+
+ if verbose:
+ print "title: %s // %s -->\n %s // %s\nslug: %s / %s -->\n %s / %s" % (
+ book.title, chunk.title,
+ new_title, new_chunk_title,
+ book.slug, chunk.slug,
+ new_slug, new_chunk_slug)
+ print
+
+ if not dry_run:
+ try:
+ conflict = Book.objects.get(slug=new_slug)
+ except Book.DoesNotExist:
+ conflict = None
+ else:
+ if conflict == books[0]:
+ conflict = None
+
+ if conflict:
+ if force:
+ # FIXME: there still may be a conflict
+ conflict.slug = '.' + conflict.slug
+ conflict.save()
+ print self.style.NOTICE('Book with slug "%s" moved to "%s".' % (new_slug, conflict.slug))
+ else:
+ print self.style.ERROR('ERROR: Book with slug "%s" exists.' % new_slug)
+ return
+
+ if i:
+ books[0].append(books[i], slugs=chunk_slugs, titles=chunk_titles)
+ else:
+ book.title = new_title
+ book.slug = new_slug
+ book.save()
+ for j, chunk in enumerate(book):
+ chunk.title = chunk_titles[j]
+ chunk.slug = chunk_slugs[j]
+ chunk.save()
+
+
+ transaction.commit()
+ transaction.leave_transaction_management()
+
fnp / redakcja.git / blobdiff