adapt to newer pressbooks version

core/loaders/pressbooks.py

@@ -1,16 +1,22 @@
+import re
 from regluit.core.validation import identifier_cleaner
 from . import BaseScraper
 
 class PressbooksScraper(BaseScraper):
-    can_scrape_hosts = ['bookkernel.com', 'milnepublishing.geneseo.edu',
-                        'press.rebus.community', 'pb.unizin.org']
+    can_scrape_hosts = [
+        'bookkernel.com', 'milnepublishing.geneseo.edu', 'press.rebus.community', 'pb.unizin.org', 
+        'opentext.wsu.edu', 'oer.missouriwestern.edu', 'eskript.ethz.ch', 'opentext.lib.vt.edu',]
     can_scrape_strings = ['pressbooks']
 
     def get_downloads(self):
         for dl_type in ['epub', 'mobi', 'pdf']:
             download_el = self.doc.select_one('.{}'.format(dl_type))
+            value = None
             if download_el and download_el.find_parent():
                 value = download_el.find_parent().get('href')
+            else:
+                a = self.doc.find('a', href=re.compile(r'{}$'.format(dl_type)))
+                value = a.get('href') if a else None
             if value:
                 self.set('download_url_{}'.format(dl_type), value)
 
@@ -22,7 +28,9 @@ class PressbooksScraper(BaseScraper):
         if value:
             self.set('publisher', value)
         else:
-            super(PressbooksScraper, self).get_publisher()
+            value = self.check_metas(['citation_publisher', 'publisher', r'DC\.Source'])
+            if value:
+                self.set('publisher', value)
                 
     def get_title(self):
         value = self.doc.select_one('.entry-title a[title]')

core/loaders/scrape.py

@@ -8,7 +8,12 @@ from django.conf import settings
 from urlparse import urljoin
 
 from regluit.core import models
-from regluit.core.validation import authlist_cleaner, identifier_cleaner, validate_date
+from regluit.core.validation import (
+    authlist_cleaner,
+    identifier_cleaner,
+    valid_subject,
+    validate_date,
+)
 
 logger = logging.getLogger(__name__)
 
@@ -66,6 +71,8 @@ class BaseScraper(object):
     #
 
     def set(self, name, value):
+        if isinstance(value,(str, unicode)):
+            value= value.strip()
         self.metadata[name] = value
 
     def fetch_one_el_content(self, el_name):
@@ -110,7 +117,7 @@ class BaseScraper(object):
         ''' get the content of <dd> after a <dt> containing name'''
         dt = self.doc.find('dt', string=re.compile(name))
         dd = dt.find_next_sibling('dd') if dt else None
-        return dd.text if dd else None
+        return dd.text.strip() if dd and dd.text else None
 
     def get_itemprop(self, name, **attrs):
         value_list = []
@@ -244,7 +251,11 @@ class BaseScraper(object):
     def get_keywords(self):
         value = self.check_metas(['keywords']).strip(',;')
         if value:
-            self.set('subjects', re.split(' *[;,] *', value))
+            subjects = []
+            for subject in re.split(' *[;,] *', value):
+                if valid_subject(subject):
+                    subjects.append(subject)
+            self.set('subjects', subjects)
 
     def get_publisher(self):
         value = self.check_metas(['citation_publisher', r'DC\.Source'])
@@ -255,8 +266,8 @@ class BaseScraper(object):
         value = self.get_itemprop('datePublished', list_mode='one_item')
         if not value:
             value = self.check_metas([
-                'citation_publication_date', r'DC\.Date\.issued', 'datePublished',
-                'books:release_date', 'book:release_date'
+                'citation_publication_date', 'copyrightYear', r'DC\.Date\.issued', 'datePublished',
+                'books:release_date', 'book:release_date', 
             ])
         if value:
             value = validate_date(value)