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# coding:utf-8
"""
Utility functions and classes used by flanker.
"""
import re
from functools import wraps
import six
def is_pure_ascii(value):
"""
Determines whether the given string is a pure ascii
string
>>> utils.is_pure_ascii(u"Cаша")
False
>>> utils.is_pure_ascii(u"Alice")
True
>>> utils.is_pure_ascii("Alice")
True
"""
if value is None:
return False
if isinstance(value, six.binary_type):
try:
value.decode('ascii')
except UnicodeDecodeError:
return False
return True
if isinstance(value, six.text_type):
try:
value.encode('ascii')
except UnicodeEncodeError:
return False
return True
return False
def cleanup_display_name(name):
return name.strip(''';,'\r\n ''')
def cleanup_email(email):
return email.strip("<>;, ")
def contains_control_chars(s):
if CONTROL_CHAR_RE.match(s):
return True
return False
def metrics_wrapper():
def decorate(f):
@wraps(f)
def wrapper(*args, **kwargs):
return_value = f(*args, **kwargs)
if 'metrics' in kwargs and kwargs['metrics'] == True:
#return all values
return return_value
# if we have a single item
if len(return_value[:-1]) == 1:
return return_value[0]
# return all except the last value
return return_value[:-1]
return wrapper
return decorate
# allows, \t\n\v\f\r (0x09-0x0d)
CONTROL_CHARS = ''.join([six.unichr(c) for c in range(0, 9)] +
[six.unichr(c) for c in range(14, 32)] +
[six.unichr(c) for c in range(127, 160)])
CONTROL_CHAR_RE = re.compile('[%s]' % re.escape(CONTROL_CHARS))
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