本文整理汇总了Python中stringprep.in_table_c21方法的典型用法代码示例。如果您正苦于以下问题：Python stringprep.in_table_c21方法的具体用法？Python stringprep.in_table_c21怎么用？Python stringprep.in_table_c21使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类stringprep的用法示例。
在下文中一共展示了stringprep.in_table_c21方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: saslprep
# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_c21 [as 别名]
def saslprep(s, allow_unassigned = False):
'''
Prepare Unicode string s according to SASLprep: Stringprep Profile for
User Names and Passwords, a.k.a. RFC 4013
If the optional parameter allow_unassigned is set to True,
unassigned codepoints will be allowed. This is recommended for
query terms and other non-storing situations only.
The return value is a Unicode string appropriately prepared.
Disallowed input leads to a ValueError.
'''
if type(s) != type(u''):
raise TypeError("input must be a Unicode string")
# phase 1: mapping
s = u''.join([ stringprep.in_table_c12(ch) and u' ' or ch for ch in unichars(s) if not stringprep.in_table_b1(ch) ])
# phase 2: normalization
s = unicodedata.normalize('NFKC', s)
# phase 3: prohibition
for ch in unichars(s):
if stringprep.in_table_c12(ch):
raise ValueError("prohibited non-ASCII space character")
if stringprep.in_table_c21(ch):
raise ValueError("prohibited ASCII control character")
if stringprep.in_table_c22(ch):
raise ValueError("prohibited non-ASCII control character")
if stringprep.in_table_c3(ch):
raise ValueError("prohibited private use character")
if stringprep.in_table_c4(ch):
raise ValueError("prohibited non-character code point")
if stringprep.in_table_c5(ch):
raise ValueError("prohibited surrogate code point")
if stringprep.in_table_c6(ch):
raise ValueError("prohibited character inappropriate for plain text")
if stringprep.in_table_c7(ch):
raise ValueError("prohibited character inappropriate for canonical representation")
if stringprep.in_table_c8(ch):
raise ValueError("prohibited character changing display properties, or a deprecated character")
if stringprep.in_table_c9(ch):
raise ValueError("prohibited tagging character")
# phase 4: bidi check
bidi_map = ''.join([ stringprep.in_table_d1(ch) and 'r' or stringprep.in_table_d2(ch) and 'l' or 'x' for ch in unichars(s) ])
if 'r' in bidi_map:
if 'l' in bidi_map:
raise ValueError("prohibited mixture of strong left-to-right and right-to-left text")
if bidi_map[0] != 'r' or bidi_map[-1] != 'r':
raise ValueError("string containing right-to-left text must start and end with right-to-left text")
# phase 5: unassigned check
if not allow_unassigned:
for ch in unichars(s):
if stringprep.in_table_a1(ch):
raise ValueError("prohibited unassigned code point")
return s