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"""
raven.utils.encoding
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: (c) 2010-2012 by the Sentry Team, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
from __future__ import absolute_import, unicode_literals
import warnings
from raven.utils.compat import integer_types, text_type, binary_type, \
string_types, PY2
def is_protected_type(obj):
"""Determine if the object instance is of a protected type.
Objects of protected types are preserved as-is when passed to
force_text(strings_only=True).
"""
import Decimal
import datetime
return isinstance(obj, integer_types + (type(None), float, Decimal,
datetime.datetime, datetime.date, datetime.time))
def force_text(s, encoding='utf-8', strings_only=False, errors='strict'):
"""
Similar to smart_text, except that lazy instances are resolved to
strings, rather than kept as lazy objects.
If strings_only is True, don't convert (some) non-string-like objects.
"""
# Handle the common case first, saves 30-40% when s is an instance of
# text_type. This function gets called often in that setting.
if isinstance(s, text_type):
return s
if strings_only and is_protected_type(s):
return s
try:
if not isinstance(s, string_types):
if hasattr(s, '__unicode__'):
s = s.__unicode__()
else:
if not PY2:
if isinstance(s, bytes):
s = text_type(s, encoding, errors)
else:
s = text_type(s)
else:
s = text_type(bytes(s), encoding, errors)
else:
# Note: We use .decode() here, instead of text_type(s, encoding,
# errors), so that if s is a SafeBytes, it ends up being a
# SafeText at the end.
s = s.decode(encoding, errors)
except UnicodeDecodeError as e:
if not isinstance(s, Exception):
raise UnicodeDecodeError(*e.args)
else:
# If we get to here, the caller has passed in an Exception
# subclass populated with non-ASCII bytestring data without a
# working unicode method. Try to handle this without raising a
# further exception by individually forcing the exception args
# to unicode.
s = ' '.join([force_text(arg, encoding, strings_only,
errors) for arg in s])
return s
def transform(value):
from raven.utils.serializer import transform
warnings.warn('You should switch to raven.utils.serializer.'
'transform', DeprecationWarning)
return transform(value)
def to_unicode(value):
try:
value = text_type(force_text(value))
except (UnicodeEncodeError, UnicodeDecodeError):
value = '(Error decoding value)'
except Exception: # in some cases we get a different exception
try:
value = text_type(force_text(repr(type(value))))
except Exception:
value = '(Error decoding value)'
return value
def to_string(value):
try:
return binary_type(value.decode('utf-8').encode('utf-8'))
except Exception:
return to_unicode(value).encode('utf-8')