- Author:
- SmileyChris
- Posted:
- July 25, 2007
- Language:
- Python
- Version:
- .96
- Score:
- 2 (after 2 ratings)
Building on jcroft's snippet, here's a slightly more advanced version which has two filters, one for basic text and the other for html snippets.
Usage is like so:
<h2>{{ blog_entry.headline|escape|widont }}</h2>
{{ blog_entry.html|widont_html }}
On top of Jeff's reasons for using these filters, they are important because they help keep one of God's commandments. ;)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | from django.template import Library
from django.utils.encoding import force_unicode
import re
register = Library()
re_widont = re.compile(r'\s+(\S+\s*)$')
def widont(value, count=1):
"""
Adds an HTML non-breaking space between the final two words of the string to
avoid "widowed" words.
Examples:
>>> print widont('Test me out')
Test me out
>>> widont('It works with trailing spaces too ')
u'It works with trailing spaces too '
>>> print widont('NoEffect')
NoEffect
"""
def replace(matchobj):
return u' %s' % matchobj.group(1)
for i in range(count):
value = re_widont.sub(replace, force_unicode(value))
return value
re_widont_html = re.compile(r'([^<>\s])\s+([^<>\s]+\s*)(</?(?:address|blockquote|br|dd|div|dt|fieldset|form|h[1-6]|li|noscript|p|td|th)[^>]*>|$)', re.IGNORECASE)
def widont_html(value):
"""
Adds an HTML non-breaking space between the final two words at the end of
(and in sentences just outside of) block level tags to avoid "widowed"
words.
Examples:
>>> print widont_html('<h2>Here is a simple example </h2> <p>Single</p>')
<h2>Here is a simple example </h2> <p>Single</p>
>>> print widont_html('<p>test me<br /> out</p><h2>Ok?</h2>Not in a p<p title="test me">and this</p>')
<p>test me<br /> out</p><h2>Ok?</h2>Not in a p<p title="test me">and this</p>
>>> print widont_html('leading text <p>test me out</p> trailing text')
leading text <p>test me out</p> trailing text
"""
def replace(matchobj):
return u'%s %s%s' % matchobj.groups()
return re_widont_html.sub(replace, force_unicode(value))
register.filter(widont)
register.filter(widont_html)
def _test():
import doctest
doctest.testmod()
if __name__ == "__main__":
_test()
|
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