despam descriptions in db

wasn't real happy with this: https://unglue.it/work/66938/ so I looked
for other spammy descriptions in the db

core/bookloader.py

@@ -488,6 +488,17 @@ def merge_works(w1, w2, user=None):
         
     w2.delete()
 
+def despam_description(description):
+    """ a lot of descriptions from openlibrary have free-book promotion text; this removes some of it."""
+    if description.find("GeneralBooksClub.com")>-1 or description.find("AkashaPublishing.Com")>-1:
+        return ""
+    pieces=description.split("1stWorldLibrary.ORG -")
+    if len(pieces)>1:
+        return pieces[1]
+    pieces=description.split("a million books for free.")
+    if len(pieces)>1:
+        return pieces[1]
+    return description
 
 def add_openlibrary(work, hard_refresh = False):
     if (not hard_refresh) and work.openlibrary_lookup is not None:
@@ -541,6 +552,7 @@ def add_openlibrary(work, hard_refresh = False):
                             if isinstance(description,dict):
                                 if description.has_key('value'):
                                     description=description['value']
+                            description=despam_description(description)
                             if not work.description or work.description.startswith('{') or len(description) > len(work.description):
                                 work.description = description
                                 work.save()
@@ -710,3 +722,4 @@ def add_missing_isbn_to_editions(max_num=None, confirm=False):
 
 class LookupFailure(Exception):
     pass
+

core/management/commands/despam_descriptions.py

@@ -0,0 +1,17 @@
+
+from django.core.management.base import BaseCommand
+from regluit.core import models, bookloader
+
+class Command(BaseCommand):
+    help = "check description db for free ebook spam"
+    
+    def handle(self, **options):
+        spam_strings=["1stWorldLibrary.ORG", "GeneralBooksClub.com", "million-books.com", "AkashaPublishing.Com"]
+        for spam_string in spam_strings:
+            qs=models.Work.objects.filter(description__icontains=spam_string)
+            print "Number of Works with %s in description: %s" % (spam_string, qs.count())
+        
+            for work in qs:
+                work.description = bookloader.despam_description(work.description)
+                print "updating work %s" % work 
+                bookloader.add_openlibrary(work, hard_refresh = True)