apps/catalogue/management/commands/make_master.py

   1 # -*- coding: utf-8 -*-
   2
   3 from django.core.management.base import BaseCommand
   4 from django.core.management.color import color_style
   5 from catalogue.management.prompt import confirm
   6 from catalogue.models import Book
   7 from optparse import make_option
   8 from datetime import date
   9 import re
  10 from slughifi import slughifi
  11 from lxml import etree
  12
  13
  14 dc_fixed = {
  15     'description': u'Publikacja zrealizowana w ramach projektu Cyfrowa Przyszłość (http://edukacjamedialna.edu.pl).',
  16     'rights': u'Creative Commons Uznanie autorstwa - Na tych samych warunkach 3.0',
  17     'rights_license': u'http://creativecommons.org/licenses/by-sa/3.0/',
  18     }
  19
  20 dc_namespaces = { "dc": "http://purl.org/dc/elements/1.1/" }
  21
  22 class Command(BaseCommand):
  23     option_list = BaseCommand.option_list + (
  24         make_option('-s', '--slug', dest='slug', help="Slug for master module"),
  25         make_option('-F', '--file', dest='slugs_file', help="file with child module slugs per line"),
  26         make_option('-t', '--title', dest='title', default='', help="title of master module"),
  27         make_option('-l', '--level', dest='audience', default='', help='Audience level'),
  28     )
  29     help = 'Create a master module skeleton'
  30
  31     def looks_like_synthetic(self, title):
  32         if re.match(r"^(gim|lic)_\d[.]? ", title):
  33             return True
  34         return False
  35
  36     def fix_part(self, child, master, typ_, audience_, commit_args):
  37         print "checking child %s" % child.slug
  38         fc = child[0]
  39         txt = fc.materialize()
  40         changed = False
  41         try:
  42             t = etree.fromstring(txt)
  43         except etree.XMLSyntaxError, e:
  44             print "cannot read xml in part: %s" % child.slug
  45             print unicode(e)
  46             return
  47         typ = t.xpath("//dc:type", namespaces=dc_namespaces)
  48         if not typ:
  49             print "no type in DC, inserting under format"
  50             fmt = t.xpath("//dc:format", namespaces=dc_namespaces)
  51             container = fmt.getparent()
  52             typ = etree.SubElement(container, etree.QName('dc', 'type'))
  53             container.insert(typ, container.index(fmt)+1)
  54             changed = True
  55         else:
  56             typ = typ[0]
  57         if typ.text != typ_:
  58             print "type is '%s', setting to '%s'" % (typ.text, typ_)
  59             changed = True
  60             typ.text = typ_
  61         audience = t.xpath("//dc:audience", namespaces=dc_namespaces)[0]
  62         if audience.text != audience_:
  63             print "audience is '%s', setting to '%s'" % (audience.text, audience_)
  64             changed = True
  65             audience.text = audience_
  66         if changed:
  67             print "will commit."
  68             fc.commit(etree.tostring(t, encoding=unicode), **commit_args)
  69
  70
  71     def gen_xml(self, options, synthetic_modules=[], course_modules=[], project_modules=[]):
  72         holder = {}
  73         holder['xml'] = u""
  74
  75         def p(t):
  76             holder['xml'] += u"%s\n" % t
  77
  78         def dc(k, v):
  79             p(u'<dc:%s xml:lang="pl" xmlns:dc="http://purl.org/dc/elements/1.1/">%s</dc:%s>' % (k, v, k))
  80
  81         def t(tag, ct):
  82             p(u'<%s>%s</%s>' % (tag, ct, tag))
  83
  84         def slug_url(slug):
  85             return u"http://edukacjamedialna/%s/" % slug
  86
  87         p("<utwor>")
  88         p(u'<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">')
  89         p(u'<rdf:Description rdf:about="http://redakcja.edukacjamedialna.edu.pl/documents/">')
  90
  91         dc(u'title', options['title'])
  92         for slug in synthetic_modules:
  93             dc(u'relation.hasPart', slug_url(slug))
  94         for slug in course_modules:
  95             dc(u'relation.hasPart', slug_url(slug))
  96         for slug in project_modules:
  97             dc(u'relation.hasPart', slug_url(slug))
  98         dc(u'publisher', u'Fundacja Nowoczesna Polska')
  99         #        dc(u'subject.competence', meta.get(u'Wybrana kompetencja z Katalogu', u''))
 100         #        dc(u'subject.curriculum', meta.get(u'Odniesienie do podstawy programowej', u''))
 101         ## for keyword in meta.get(u'Słowa kluczowe', u'').split(u','):
 102         ##     keyword = keyword.strip()
 103         ##     dc(u'subject', keyword)
 104         dc(u'description', dc_fixed['description'])
 105         dc(u'identifier.url', u'http://edukacjamedialna.edu.pl/%s' % options['slug'])
 106         dc(u'rights', dc_fixed['rights'])
 107         dc(u'rights.license', dc_fixed['rights_license'])
 108         dc(u'format', u'xml')
 109         dc(u'type', u'text')
 110         dc(u'date', date.strftime(date.today(), "%Y-%m-%d"))
 111         dc(u'audience', options['audience'])
 112         dc(u'language', u'pol')
 113         p(u'</rdf:Description>')
 114         p(u'</rdf:RDF>')
 115         p(u'</utwor>')
 116
 117         return holder['xml']
 118
 119     def handle(self, *args, **options):
 120         commit_args = {
 121             "author_name": 'Platforma',
 122             "description": 'Automatycznie zaimportowane z EtherPad',
 123             "publishable": False,
 124         }
 125
 126         slug = options['slug']
 127         if not slug:
 128             slug = slughifi(options['title'])
 129         existing = Book.objects.filter(slug=slug)
 130
 131         master = None
 132         if existing:
 133             overwrite = confirm("%s exists. Overwrite?" % slug, True)
 134             if not overwrite:
 135                 return
 136             master = existing[0]
 137         else:
 138             master = Book()
 139         master.slug = slug
 140         master.title = options['title']
 141         master.save()
 142
 143         if len(master) == 0:
 144             master.add(slug, options['title'])
 145
 146         synthetic_modules = []
 147         course_modules = []
 148         if 'slugs_file' in options:
 149             f = open(options['slugs_file'], 'r')
 150             try:
 151                 titles = [l.strip() for l in f.readlines()]
 152
 153                 for t in titles:
 154                     if not t: continue
 155                     try:
 156                         b = Book.objects.get(title=t)
 157                     except Book.DoesNotExist:
 158                         print "Book for title %s does not exist" % t
 159                         continue
 160                     if self.looks_like_synthetic(t):
 161                         synthetic_modules.append(b.slug)
 162                         self.fix_part(b, master, 'synthetic', options['audience'], commit_args)
 163                     else:
 164                         course_modules.append(b.slug)
 165                         self.fix_part(b, master, 'course', options['audience'], commit_args)
 166             except Exception, e:
 167                 print "Error getting slug list (file %s): %s" % (options['slugs_file'], e)
 168
 169         print "synthetic: %s" % synthetic_modules
 170         print "course: %s" % course_modules
 171
 172         xml = self.gen_xml(options, synthetic_modules, course_modules)
 173         c = master[0]
 174         print xml
 175         if confirm("Commit?", True):
 176             c.commit(xml, **commit_args)
 177