Further fixes for subfolder hosting

[osqa.git] / forum / utils / html.py

diff --git a/forum/utils/html.py b/forum/utils/html.py
index 25a74a4a768e4a164823b3b5ddc81cf993fd5f81..3657ef6af0a6ecd6813a9d4eaf35840c76e94060 100644 (file)
--- a/forum/utils/html.py
+++ b/forum/utils/html.py
@@ -1,6 +1,10 @@
 """Utilities for working with HTML."""
-import html5lib
-from html5lib import sanitizer, serializer, tokenizer, treebuilders, treewalkers
+from html5lib import sanitizer, serializer, tokenizer, treebuilders, treewalkers, HTMLParser
+from urllib import quote_plus
+from django.utils.html import strip_tags
+from forum.utils.html2text import HTML2Text
+from django.utils.safestring import mark_safe
+from forum import settings
 
 class HTMLSanitizerMixin(sanitizer.HTMLSanitizerMixin):
     acceptable_elements = ('a', 'abbr', 'acronym', 'address', 'b', 'big',
@@ -26,11 +30,6 @@ class HTMLSanitizerMixin(sanitizer.HTMLSanitizerMixin):
     allowed_svg_properties = ()
 
 class HTMLSanitizer(tokenizer.HTMLTokenizer, HTMLSanitizerMixin):
-    def __init__(self, stream, encoding=None, parseMeta=True, useChardet=True,
-                 lowercaseElementName=True, lowercaseAttrName=True):
-        tokenizer.HTMLTokenizer.__init__(self, stream, encoding, parseMeta,
-                                         useChardet, lowercaseElementName,
-                                         lowercaseAttrName)
 
     def __iter__(self):
         for token in tokenizer.HTMLTokenizer.__iter__(self):
@@ -40,7 +39,7 @@ class HTMLSanitizer(tokenizer.HTMLTokenizer, HTMLSanitizerMixin):
 
 def sanitize_html(html):
     """Sanitizes an HTML fragment."""
-    p = html5lib.HTMLParser(tokenizer=HTMLSanitizer,
+    p = HTMLParser(tokenizer=HTMLSanitizer,
                             tree=treebuilders.getTreeBuilder("dom"))
     dom_tree = p.parseFragment(html)
     walker = treewalkers.getTreeWalker("dom")
@@ -49,3 +48,27 @@ def sanitize_html(html):
                                   quote_attr_values=True)
     output_generator = s.serialize(stream)
     return u''.join(output_generator)
+
+def cleanup_urls(url):
+    return quote_plus(strip_tags(url))
+
+
+def html2text(s, ignore_tags=(), indent_width=4, page_width=80):
+    ignore_tags = [t.lower() for t in ignore_tags]
+    parser = HTML2Text(ignore_tags, indent_width, page_width)
+    parser.feed(s)
+    parser.close()
+    parser.generate()
+    return mark_safe(parser.result)
+
+def buildtag(name, content, **attrs):
+    return mark_safe('<%s %s>%s</%s>' % (name, " ".join('%s="%s"' % i for i in attrs.items()), unicode(content), name))
+
+def hyperlink(url, title, **attrs):
+    return mark_safe('<a href="%s" %s>%s</a>' % (url, " ".join('%s="%s"' % i for i in attrs.items()), title))
+
+def objlink(obj, **attrs):
+    link = obj.get_absolute_url()
+    if not link.startswith(settings.APP_URL):
+        link = settings.APP_URL + link
+    return hyperlink(link, unicode(obj), **attrs)