implemented newer version of readability-module

readability/cleaners.py

@@ -0,0 +1,32 @@
+# strip out a set of nuisance html attributes that can mess up rendering in RSS feeds
+import re
+from lxml.html.clean import Cleaner
+
+bad_attrs = ['width', 'height', 'style', '[-a-z]*color', 'background[-a-z]*', 'on*']
+single_quoted = "'[^']+'"
+double_quoted = '"[^"]+"'
+non_space = '[^ "\'>]+'
+htmlstrip = re.compile("<" # open
+    "([^>]+) " # prefix
+    "(?:%s) *" % ('|'.join(bad_attrs),) + # undesirable attributes
+    '= *(?:%s|%s|%s)' % (non_space, single_quoted, double_quoted) + # value
+    "([^>]*)"  # postfix
+    ">"        # end
+, re.I)
+
+def clean_attributes(html):
+    while htmlstrip.search(html):
+        html = htmlstrip.sub('<\\1\\2>', html)
+    return html
+
+def normalize_spaces(s):
+    if not s: return ''
+    """replace any sequence of whitespace
+    characters with a single space"""
+    return ' '.join(s.split())
+
+html_cleaner = Cleaner(scripts=True, javascript=True, comments=True,
+                  style=True, links=True, meta=False, add_nofollow=False,
+                  page_structure=False, processing_instructions=True, embedded=False,
+                  frames=False, forms=False, annoying_tags=False, remove_tags=None,
+                  remove_unknown_tags=False, safe_attrs_only=False)