Python stringprep.in_table_d2方法代码示例

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def check_bidirectionals(self, string):
        found_LCat = False
        found_RandALCat = False

        for c in string:
            if stringprep.in_table_d1(c):
                found_RandALCat = True
            if stringprep.in_table_d2(c):
                found_LCat = True

        if found_LCat and found_RandALCat:
            raise UnicodeError("Violation of BIDI Requirement 2")

        if found_RandALCat and not (stringprep.in_table_d1(string[0]) and
                                    stringprep.in_table_d1(string[-1])):
            raise UnicodeError("Violation of BIDI Requirement 3") 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def check_bidirectionals(self, string):
        found_LCat = False
        found_RandALCat = False

        for c in string:
            if stringprep.in_table_d1(c):
                found_RandALCat = True
            if stringprep.in_table_d2(c):
                found_LCat = True

        if found_LCat and found_RandALCat:
            raise UnicodeError, "Violation of BIDI Requirement 2"

        if found_RandALCat and not (stringprep.in_table_d1(string[0]) and
                                    stringprep.in_table_d1(string[-1])):
            raise UnicodeError, "Violation of BIDI Requirement 3" 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def check_bidi(data):
        """Checks if sting is valid for bidirectional printing."""
        has_l = False
        has_ral = False
        for char in data:
            if stringprep.in_table_d1(char):
                has_ral = True
            elif stringprep.in_table_d2(char):
                has_l = True
        if has_l and has_ral:
            raise StringprepError("Both RandALCat and LCat characters present")
        if has_ral and (not stringprep.in_table_d1(data[0])
                                    or not stringprep.in_table_d1(data[-1])):
            raise StringprepError("The first and the last character must"
                                                                " be RandALCat")
        return data 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def check_bidi(data):
    """
    1) The characters in section 5.8 MUST be prohibited.

    2) If a string contains any RandALCat character, the string MUST NOT
       contain any LCat character.

    3) If a string contains any RandALCat character, a RandALCat
       character MUST be the first character of the string, and a
       RandALCat character MUST be the last character of the string.
    """
    if not data:
        return data

    has_lcat = False
    has_randal = False

    for c in data:
        if stringprep.in_table_c8(c):
            raise StringPrepError("BIDI violation: seciton 6 (1)")
        if stringprep.in_table_d1(c):
            has_randal = True
        elif stringprep.in_table_d2(c):
            has_lcat = True

    if has_randal and has_lcat:
        raise StringPrepError("BIDI violation: section 6 (2)")

    first_randal = stringprep.in_table_d1(data[0])
    last_randal = stringprep.in_table_d1(data[-1])
    if has_randal and not (first_randal and last_randal):
        raise StringPrepError("BIDI violation: section 6 (3)") 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def nameprep(label):
    # Map
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            # Map to nothing
            continue
        newlabel.append(stringprep.map_table_b2(c))
    label = u"".join(newlabel)

    # Normalize
    label = unicodedata.normalize("NFKC", label)

    # Prohibit
    for c in label:
        if stringprep.in_table_c12(c) or \
           stringprep.in_table_c22(c) or \
           stringprep.in_table_c3(c) or \
           stringprep.in_table_c4(c) or \
           stringprep.in_table_c5(c) or \
           stringprep.in_table_c6(c) or \
           stringprep.in_table_c7(c) or \
           stringprep.in_table_c8(c) or \
           stringprep.in_table_c9(c):
            raise UnicodeError("Invalid character %r" % c)

    # Check bidi
    RandAL = map(stringprep.in_table_d1, label)
    for c in RandAL:
        if c:
            # There is a RandAL char in the string. Must perform further
            # tests:
            # 1) The characters in section 5.8 MUST be prohibited.
            # This is table C.8, which was already checked
            # 2) If a string contains any RandALCat character, the string
            # MUST NOT contain any LCat character.
            if filter(stringprep.in_table_d2, label):
                raise UnicodeError("Violation of BIDI requirement 2")

            # 3) If a string contains any RandALCat character, a
            # RandALCat character MUST be the first character of the
            # string, and a RandALCat character MUST be the last
            # character of the string.
            if not RandAL[0] or not RandAL[-1]:
                raise UnicodeError("Violation of BIDI requirement 3")

    return label 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def nameprep(label):
    # Map
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            # Map to nothing
            continue
        newlabel.append(stringprep.map_table_b2(c))
    label = "".join(newlabel)

    # Normalize
    label = unicodedata.normalize("NFKC", label)

    # Prohibit
    for c in label:
        if stringprep.in_table_c12(c) or \
           stringprep.in_table_c22(c) or \
           stringprep.in_table_c3(c) or \
           stringprep.in_table_c4(c) or \
           stringprep.in_table_c5(c) or \
           stringprep.in_table_c6(c) or \
           stringprep.in_table_c7(c) or \
           stringprep.in_table_c8(c) or \
           stringprep.in_table_c9(c):
            raise UnicodeError("Invalid character %r" % c)

    # Check bidi
    RandAL = [stringprep.in_table_d1(x) for x in label]
    for c in RandAL:
        if c:
            # There is a RandAL char in the string. Must perform further
            # tests:
            # 1) The characters in section 5.8 MUST be prohibited.
            # This is table C.8, which was already checked
            # 2) If a string contains any RandALCat character, the string
            # MUST NOT contain any LCat character.
            if any(stringprep.in_table_d2(x) for x in label):
                raise UnicodeError("Violation of BIDI requirement 2")

            # 3) If a string contains any RandALCat character, a
            # RandALCat character MUST be the first character of the
            # string, and a RandALCat character MUST be the last
            # character of the string.
            if not RandAL[0] or not RandAL[-1]:
                raise UnicodeError("Violation of BIDI requirement 3")

    return label 

# 需要导入模块: import stringprep [as 别名]
# 或者: from stringprep import in_table_d2 [as 别名]
def saslprep(data, prohibit_unassigned_code_points=True):
        """An implementation of RFC4013 SASLprep.

        :Parameters:
          - `data`: The string to SASLprep. Unicode strings
            (python 2.x unicode, 3.x str) are supported. Byte strings
            (python 2.x str, 3.x bytes) are ignored.
          - `prohibit_unassigned_code_points`: True / False. RFC 3454
            and RFCs for various SASL mechanisms distinguish between
            `queries` (unassigned code points allowed) and
            `stored strings` (unassigned code points prohibited). Defaults
            to ``True`` (unassigned code points are prohibited).

        :Returns:
        The SASLprep'ed version of `data`.
        """
        if not isinstance(data, _text_type):
            return data

        if prohibit_unassigned_code_points:
            prohibited = _PROHIBITED + (stringprep.in_table_a1,)
        else:
            prohibited = _PROHIBITED

        # RFC3454 section 2, step 1 - Map
        # RFC4013 section 2.1 mappings
        # Map Non-ASCII space characters to SPACE (U+0020). Map
        # commonly mapped to nothing characters to, well, nothing.
        in_table_c12 = stringprep.in_table_c12
        in_table_b1 = stringprep.in_table_b1
        data = u"".join(
            [u"\u0020" if in_table_c12(elt) else elt
             for elt in data if not in_table_b1(elt)])

        # RFC3454 section 2, step 2 - Normalize
        # RFC4013 section 2.2 normalization
        data = unicodedata.ucd_3_2_0.normalize('NFKC', data)

        in_table_d1 = stringprep.in_table_d1
        if in_table_d1(data[0]):
            if not in_table_d1(data[-1]):
                # RFC3454, Section 6, #3. If a string contains any
                # RandALCat character, the first and last characters
                # MUST be RandALCat characters.
                raise ValueError("SASLprep: failed bidirectional check")
            # RFC3454, Section 6, #2. If a string contains any RandALCat
            # character, it MUST NOT contain any LCat character.
            prohibited = prohibited + (stringprep.in_table_d2,)
        else:
            # RFC3454, Section 6, #3. Following the logic of #3, if
            # the first character is not a RandALCat, no other character
            # can be either.
            prohibited = prohibited + (in_table_d1,)

        # RFC3454 section 2, step 3 and 4 - Prohibit and check bidi
        for char in data:
            if any(in_table(char) for in_table in prohibited):
                raise ValueError(
                    "SASLprep: failed prohibited character check")

        return data