<\/strong>|<\/?smallcaps>|<\/?uppercase>)', re.IGNORECASE)
hard_coded_bullets_re = re.compile(r'((?:(?:%s).*?[a-zA-Z].*?
\s*)+)' % '|'.join([re.escape(x) for x in DOTS]), re.DOTALL)
trailing_empty_content_re = re.compile(r'(?:(?: |\s|
)*?
\s*)+\Z')
del x # Temporary variable
def escape(html):
"Return the given HTML with ampersands, quotes and carets encoded."
return force_unicode(html).replace('&', '&').replace('<', '<').replace('>', '>').replace('"', '"').replace("'", ''')
escape = allow_lazy(escape, unicode)
def linebreaks(value):
"Convert newlines into and
s."
value = re.sub(r'\r\n|\r|\n', '\n', force_unicode(value)) # normalize newlines
paras = re.split('\n{2,}', value)
paras = [u'
%s
' % p.strip().replace('\n', '
') for p in paras]
return u'\n\n'.join(paras)
linebreaks = allow_lazy(linebreaks, unicode)
def strip_tags(value):
"Return the given HTML with all tags stripped."
return re.sub(r'<[^>]*?>', '', force_unicode(value))
strip_tags = allow_lazy(strip_tags)
def strip_spaces_between_tags(value):
"Return the given HTML with spaces between tags removed."
return re.sub(r'>\s+<', '><', force_unicode(value))
strip_spaces_between_tags = allow_lazy(strip_spaces_between_tags, unicode)
def strip_entities(value):
"Return the given HTML with all entities (&something;) stripped."
return re.sub(r'&(?:\w+|#\d+);', '', force_unicode(value))
strip_entities = allow_lazy(strip_entities, unicode)
def fix_ampersands(value):
"Return the given HTML with all unencoded ampersands encoded correctly."
return unencoded_ampersands_re.sub('&', force_unicode(value))
fix_ampersands = allow_lazy(fix_ampersands, unicode)
def urlize(text, trim_url_limit=None, nofollow=False):
"""
Convert any URLs in text into clickable links.
Works on http://, https://, and www. links. Links can have trailing
punctuation (periods, commas, close-parens) and leading punctuation
(opening parens) and it'll still do the right thing.
If trim_url_limit is not None, the URLs in link text longer than this limit
will truncated to trim_url_limit-3 characters and appended with an elipsis.
If nofollow is True, the URLs in link text will get a rel="nofollow"
attribute.
"""
trim_url = lambda x, limit=trim_url_limit: limit is not None and (len(x) > limit and ('%s...' % x[:max(0, limit - 3)])) or x
words = word_split_re.split(force_unicode(text))
nofollow_attr = nofollow and ' rel="nofollow"' or ''
for i, word in enumerate(words):
match = punctuation_re.match(word)
if match:
lead, middle, trail = match.groups()
if middle.startswith('www.') or ('@' not in middle and not middle.startswith('http://') and \
len(middle) > 0 and middle[0] in string.letters + string.digits and \
(middle.endswith('.org') or middle.endswith('.net') or middle.endswith('.com'))):
middle = '%s' % (middle, nofollow_attr, trim_url(middle))
if middle.startswith('http://') or middle.startswith('https://'):
middle = '%s' % (middle, nofollow_attr, trim_url(middle))
if '@' in middle and not middle.startswith('www.') and not ':' in middle \
and simple_email_re.match(middle):
middle = '%s' % (middle, middle)
if lead + middle + trail != word:
words[i] = lead + middle + trail
return u''.join(words)
urlize = allow_lazy(urlize, unicode)
def clean_html(text):
"""
Clean the given HTML. Specifically, do the following:
* Convert and to and .
* Encode all ampersands correctly.
* Remove all "target" attributes from tags.
* Remove extraneous HTML, such as presentational tags that open and
immediately close and
.
* Convert hard-coded bullets into HTML unordered lists.
* Remove stuff like "
", but only if it's at the
bottom of the text.
"""
from django.utils.text import normalize_newlines
text = normalize_newlines(force_unicode(text))
text = re.sub(r'<(/?)\s*b\s*>', '<\\1strong>', text)
text = re.sub(r'<(/?)\s*i\s*>', '<\\1em>', text)
text = fix_ampersands(text)
# Remove all target="" attributes from tags.
text = link_target_attribute_re.sub('\\1', text)
# Trim stupid HTML such as
.
text = html_gunk_re.sub('', text)
# Convert hard-coded bullets into HTML unordered lists.
def replace_p_tags(match):
s = match.group().replace('', '')
for d in DOTS:
s = s.replace('%s' % d, '
')
return u'' % s
text = hard_coded_bullets_re.sub(replace_p_tags, text)
# Remove stuff like "
", but only if it's at the bottom
# of the text.
text = trailing_empty_content_re.sub('', text)
return text
clean_html = allow_lazy(clean_html, unicode)