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#
# String/unicode conversion utils.
#
def safestr(s):
"""
Safely corerce *anything* to a string. If the object can't be str'd, an
empty string will be returned.
You can (and I do) use this for really crappy unicode handling, but it's
a bit like killing a mosquito with a bazooka.
"""
if s is None:
return ""
if isinstance(s, unicode):
return s.encode('ascii', 'xmlcharrefreplace')
else:
try:
return str(s)
except:
return ""
def safeint(s):
"""Like safestr(), but always returns an int. Returns 0 on failure."""
try:
return int(safestr(s))
except ValueError:
return 0
def convertentity(m):
import htmlentitydefs
"""Convert a HTML entity into normal string (ISO-8859-1)"""
if m.group(1)=='#':
try:
return chr(int(m.group(2)))
except ValueError:
return '&#%s;' % m.group(2)
try:
return htmlentitydefs.entitydefs[m.group(2)]
except KeyError:
return '&%s;' % m.group(2)
def unquotehtml(s):
import re
"""Convert a HTML quoted string into normal string (ISO-8859-1).
Works with &#XX; and with > etc."""
return re.sub(r'&(#?)(.+?);',convertentity,s)
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