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idna-data	24.44 KB	-rw-r--r--

Code Editor : idna-data

#!/usr/bin/env python3

import argparse, collections, datetime, os, re, sys, unicodedata
from urllib.request import urlopen

# Use intranges.intranges_from_list() from the sibling idna directory
sys.path.append(
    os.path.join(
        os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
        "idna"
    )
)
from intranges import intranges_from_list

if sys.version_info[0] < 3:
    print("Only Python 3 supported.")
    sys.exit(2)

PREFERRED_VERSION = '16.0.0'
UCD_URL = 'http://www.unicode.org/Public/{version}/ucd/{filename}'
UTS46_URL = 'http://www.unicode.org/Public/idna/{version}/{filename}'

DEFAULT_CACHE_DIR = '~/.cache/unidata'

# Scripts affected by IDNA contextual rules
SCRIPT_WHITELIST = sorted(['Greek', 'Han', 'Hebrew', 'Hiragana', 'Katakana'])

# Used to piece apart UTS#46 data for Jython compatibility
UTS46_SEGMENT_SIZE = 100

UTS46_STATUSES = {
    'valid': ('V', False),
    'ignored': ('I', False),
    'mapped': ('M', True),
    'deviation': ('D', True),
    'disallowed': ('X', False),
    'disallowed_STD3_valid': ('3', False),
    'disallowed_STD3_mapped': ('3', True)
}

# Exceptions are manually assigned in Section 2.6 of RFC 5892.
exceptions = {
    0x00DF: 'PVALID',      # LATIN SMALL LETTER SHARP S
    0x03C2: 'PVALID',      # GREEK SMALL LETTER FINAL SIGMA
    0x06FD: 'PVALID',      # ARABIC SIGN SINDHI AMPERSAND
    0x06FE: 'PVALID',      # ARABIC SIGN SINDHI POSTPOSITION MEN
    0x0F0B: 'PVALID',      # TIBETAN MARK INTERSYLLABIC TSHEG
    0x3007: 'PVALID',      # IDEOGRAPHIC NUMBER ZERO
    0x00B7: 'CONTEXTO',    # MIDDLE DOT
    0x0375: 'CONTEXTO',    # GREEK LOWER NUMERAL SIGN (KERAIA)
    0x05F3: 'CONTEXTO',    # HEBREW PUNCTUATION GERESH
    0x05F4: 'CONTEXTO',    # HEBREW PUNCTUATION GERSHAYIM
    0x30FB: 'CONTEXTO',    # KATAKANA MIDDLE DOT
    0x0660: 'CONTEXTO',    # ARABIC-INDIC DIGIT ZERO
    0x0661: 'CONTEXTO',    # ARABIC-INDIC DIGIT ONE
    0x0662: 'CONTEXTO',    # ARABIC-INDIC DIGIT TWO
    0x0663: 'CONTEXTO',    # ARABIC-INDIC DIGIT THREE
    0x0664: 'CONTEXTO',    # ARABIC-INDIC DIGIT FOUR
    0x0665: 'CONTEXTO',    # ARABIC-INDIC DIGIT FIVE
    0x0666: 'CONTEXTO',    # ARABIC-INDIC DIGIT SIX
    0x0667: 'CONTEXTO',    # ARABIC-INDIC DIGIT SEVEN
    0x0668: 'CONTEXTO',    # ARABIC-INDIC DIGIT EIGHT
    0x0669: 'CONTEXTO',    # ARABIC-INDIC DIGIT NINE
    0x06F0: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT ZERO
    0x06F1: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT ONE
    0x06F2: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT TWO
    0x06F3: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT THREE
    0x06F4: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT FOUR
    0x06F5: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT FIVE
    0x06F6: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT SIX
    0x06F7: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT SEVEN
    0x06F8: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT EIGHT
    0x06F9: 'CONTEXTO',    # EXTENDED ARABIC-INDIC DIGIT NINE
    0x0640: 'DISALLOWED',  # ARABIC TATWEEL
    0x07FA: 'DISALLOWED',  # NKO LAJANYALAN
    0x302E: 'DISALLOWED',  # HANGUL SINGLE DOT TONE MARK
    0x302F: 'DISALLOWED',  # HANGUL DOUBLE DOT TONE MARK
    0x3031: 'DISALLOWED',  # VERTICAL KANA REPEAT MARK
    0x3032: 'DISALLOWED',  # VERTICAL KANA REPEAT WITH VOICED SOUND MARK
    0x3033: 'DISALLOWED',  # VERTICAL KANA REPEAT MARK UPPER HALF
    0x3034: 'DISALLOWED',  # VERTICAL KANA REPEAT WITH VOICED SOUND MARK UPPER HA
    0x3035: 'DISALLOWED',  # VERTICAL KANA REPEAT MARK LOWER HALF
    0x303B: 'DISALLOWED',  # VERTICAL IDEOGRAPHIC ITERATION MARK
}
backwardscompatible = {}

def hexrange(start, end):
    return range(int(start, 16), int(end, 16) + 1)

def hexvalue(value):
    return int(value, 16)

class UnicodeVersion(object):

def __init__(self, version):
        result = re.match(r'^(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)$', version)
        if result:
            self.major = int(result.group('major'))
            self.minor = int(result.group('minor'))
            self.patch = int(result.group('patch'))
            self.numerical = (self.major << 8) + (self.minor << 4) + self.patch
            self.latest = False
        elif version == 'latest':
            self.latest = True
        else:
            raise ValueError('Unrecognized Unicode version')

def __repr__(self, with_date=True):
        if self.latest:
            if with_date:
                return 'latest@{}'.format(datetime.datetime.now().strftime('%Y-%m-%d'))
            else:
                return 'latest'
        else:
            return '{}.{}.{}'.format(self.major, self.minor, self.patch)

@property
    def tag(self):
        return self.__repr__(with_date=False)

def __gt__(self, other):
        if self.latest:
            return True
        return self.numerical > other.numerical

def __eq__(self, other):
        if self.latest:
            return False
        return self.numerical == other.numerical

class UnicodeData(object):

def __init__(self, version, cache, args):
        self.version = UnicodeVersion(version)
        self.system_version = UnicodeVersion(unicodedata.unidata_version)
        self.source = args.source
        self.cache = cache
        self.max = 0

if self.system_version < self.version:
            print('Warning: Character stability not guaranteed as Python Unicode data {}'
                   ' older than requested {}'.format(self.system_version, self.version))

self._load_unicodedata()
        self._load_proplist()
        self._load_derivedcoreprops()
        self._load_blocks()
        self._load_casefolding()
        self._load_hangulst()
        self._load_arabicshaping()
        self._load_scripts()
        self._load_uts46mapping()

def _load_unicodedata(self):

f_ud = self._ucdfile('UnicodeData.txt')
        self.ucd_data = {}
        range_begin = None
        for line in f_ud.splitlines():
            fields = line.split(';')
            value = int(fields[0], 16)
            start_marker = re.match('^<(?P<name>.*?), First>$', fields[1])
            end_marker = re.match('^<(?P<name>.*?), Last>$', fields[1])
            if start_marker:
                range_begin = value
            elif end_marker:
                for i in range(range_begin, value+1):
                    fields[1] = '<{}>'.format(end_marker.group('name'))
                    self.ucd_data[i] = fields[1:]
                range_begin = None
            else:
                self.ucd_data[value] = fields[1:]

def _load_proplist(self):

f_pl = self._ucdfile('PropList.txt')
        self.ucd_props = collections.defaultdict(list)
        for line in f_pl.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})(|\.\.(?P<end>[0-9A-F]{4,6}))\s*;\s*(?P<prop>\S+)\s*(|\#.*)$',
                line)
            if result:
                if result.group('end'):
                    for i in hexrange(result.group('start'), result.group('end')):
                        self.ucd_props[i].append(result.group('prop'))
                else:
                    i = hexvalue(result.group('start'))
                    self.ucd_props[i].append(result.group('prop'))

def _load_derivedcoreprops(self):

f_dcp = self._ucdfile('DerivedCoreProperties.txt')
        for line in f_dcp.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})(|\.\.(?P<end>[0-9A-F]{4,6}))\s*;\s*(?P<prop>\S+)\s*(|\#.*)$',
                line)
            if result:
                if result.group('end'):
                    for i in hexrange(result.group('start'), result.group('end')):
                        self.ucd_props[i].append(result.group('prop'))
                else:
                    i = hexvalue(result.group('start'))
                    self.ucd_props[i].append(result.group('prop'))

def _load_blocks(self):

self.ucd_block = {}
        f_b = self._ucdfile('Blocks.txt')
        for line in f_b.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})\.\.(?P<end>[0-9A-F]{4,6})\s*;\s*(?P<block>.*)\s*$',
                line)
            if result:
                for i in hexrange(result.group('start'), result.group('end')):
                    self.ucd_block[i] = result.group('block')
                    self.max = max(self.max, i)

def _load_casefolding(self):

self.ucd_cf = {}
        f_cf = self._ucdfile('CaseFolding.txt')
        for line in f_cf.splitlines():
            result = re.match(
                r'^(?P<cp>[0-9A-F]{4,6})\s*;\s*(?P<type>\S+)\s*;\s*(?P<subst>[0-9A-F\s]+)\s*',
                line)
            if result:
                if result.group('type') in ('C', 'F'):
                    self.ucd_cf[int(result.group('cp'), 16)] = \
                        ''.join([chr(int(x, 16)) for x in result.group('subst').split(' ')])

def _load_hangulst(self):

self.ucd_hst = {}
        f_hst = self._ucdfile('HangulSyllableType.txt')
        for line in f_hst.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})\.\.(?P<end>[0-9A-F]{4,6})\s*;\s*(?P<type>\S+)\s*(|\#.*)$',
                line)
            if result:
                for i in hexrange(result.group('start'), result.group('end')):
                    self.ucd_hst[i] = result.group('type')

def _load_arabicshaping(self):

self.ucd_as = {}
        f_as = self._ucdfile('extracted/DerivedJoiningType.txt')
        for line in f_as.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})(|\.\.(?P<end>[0-9A-F]{4,6}))\s*;\s*(?P<jt>\S+)\s*(|\#.*)$',
                line)
            if result:
                if result.group('end'):
                    for i in hexrange(result.group('start'), result.group('end')):
                        self.ucd_as[i] = result.group('jt')
                else:
                    i = hexvalue(result.group('start'))
                    self.ucd_as[i] = result.group('jt')

def _load_scripts(self):

self.ucd_s = {}
        f_s = self._ucdfile('Scripts.txt')
        for line in f_s.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})(|\.\.(?P<end>[0-9A-F]{4,6}))\s*;\s*(?P<script>\S+)\s*(|\#.*)$',
                line)
            if result:
                if not result.group('script') in self.ucd_s:
                    self.ucd_s[result.group('script')] = set()
                if result.group('end'):
                    for i in hexrange(result.group('start'), result.group('end')):
                        self.ucd_s[result.group('script')].add(i)
                else:
                    i = hexvalue(result.group('start'))
                    self.ucd_s[result.group('script')].add(i)

def _load_uts46mapping(self):

self.ucd_idnamt = {}
        f_idnamt = self._ucdfile('IdnaMappingTable.txt', urlbase=UTS46_URL)
        for line in f_idnamt.splitlines():
            result = re.match(
                r'^(?P<start>[0-9A-F]{4,6})(|\.\.(?P<end>[0-9A-F]{4,6}))\s*;\s*(?P<fields>[^#]+)',
                line)
            if result:
                fields = [x.strip() for x in result.group('fields').split(';')]
                if result.group('end'):
                    for i in hexrange(result.group('start'), result.group('end')):
                        self.ucd_idnamt[i] = fields
                else:
                    i = hexvalue(result.group('start'))
                    self.ucd_idnamt[i] = fields

def _ucdfile(self, filename, urlbase=UCD_URL):
        if self.source:
            f = open('{}/{}'.format(self.source, filename))
            return f.read()
        else:
            cache_file = None
            if self.cache:
                cache_file = os.path.expanduser('{}/{}/{}'.format(
                    self.cache, self.version.tag, filename))
                if os.path.isfile(cache_file):
                    f = open(cache_file)
                    return f.read()

version_path = self.version.tag
            if version_path == 'latest':
                version_path = 'UCD/latest'
            url = urlbase.format(
                version=version_path,
                filename=filename,
            )
            content = urlopen(url).read().decode('utf-8')

if cache_file:
                if not os.path.isdir(os.path.dirname(cache_file)):
                    os.makedirs(os.path.dirname(cache_file))
                f = open(cache_file, 'wb')
                f.write(content.encode('utf-8'))
                f.close()

return str(content)

def codepoints(self):
        for i in range(0, self.max + 1):
            yield CodePoint(i, ucdata=self)

class CodePoint:

def __init__(self, value=None, ucdata=None):
        self.value = value
        self.ucdata = ucdata

def _casefold(self, s):
        r = ''
        for c in s:
            r += self.ucdata.ucd_cf.get(ord(c), c)
        return r

@property
    def exception_value(self):
        return exceptions.get(self.value, False)

@property
    def compat_value(self):
        return backwardscompatible.get(self.value, False)

@property
    def name(self):
        if self.value in self.ucdata.ucd_data:
            return self.ucdata.ucd_data[self.value][0]
        elif 'Noncharacter_Code_Point' in self.ucdata.ucd_props[self.value]:
            return '<noncharacter>'
        else:
            return '<reserved>'

@property
    def general_category(self):
        return self.ucdata.ucd_data.get(self.value, [None, None])[1]

@property
    def unassigned(self):
        return not ('Noncharacter_Code_Point' in self.ucdata.ucd_props[self.value] or \
                    self.value in self.ucdata.ucd_data)

@property
    def ldh(self):
        if self.value == 0x002d or \
           self.value in range(0x0030, 0x0039+1) or \
           self.value in range(0x0061, 0x007a+1):
            return True
        return False

@property
    def join_control(self):
        return 'Join_Control' in self.ucdata.ucd_props[self.value]

@property
    def joining_type(self):
        return self.ucdata.ucd_as.get(self.value, None)

@property
    def char(self):
        return chr(self.value)

@property
    def nfkc_cf(self):
        return unicodedata.normalize('NFKC',
                                     self._casefold(unicodedata.normalize('NFKC', self.char)))

@property
    def unstable(self):
        return self.char != self.nfkc_cf

@property
    def in_ignorableproperties(self):
        for prop in ['Default_Ignorable_Code_Point', 'White_Space', 'Noncharacter_Code_Point']:
            if prop in self.ucdata.ucd_props[self.value]:
                return True
        return False

@property
    def in_ignorableblocks(self):
        return self.ucdata.ucd_block.get(self.value) in (
            'Combining Diacritical Marks for Symbols', 'Musical Symbols',
            'Ancient Greek Musical Notation'
        )

@property
    def oldhanguljamo(self):
        return self.ucdata.ucd_hst.get(self.value) in ('L', 'V', 'T')

@property
    def in_lettersdigits(self):
        return self.general_category in ('Ll', 'Lu', 'Lo', 'Nd', 'Lm', 'Mn', 'Mc')

@property
    def idna2008_status(self):
        if self.exception_value:
            return self.exception_value
        elif self.compat_value:
            return self.compat_value
        elif self.unassigned:
            return 'UNASSIGNED'
        elif self.ldh:
            return 'PVALID'
        elif self.join_control:
            return 'CONTEXTJ'
        elif self.unstable:
            return 'DISALLOWED'
        elif self.in_ignorableproperties:
            return 'DISALLOWED'
        elif self.in_ignorableblocks:
            return 'DISALLOWED'
        elif self.oldhanguljamo:
            return 'DISALLOWED'
        elif self.in_lettersdigits:
            return 'PVALID'
        else:
            return 'DISALLOWED'

@property
    def uts46_data(self):
        return self.ucdata.ucd_idnamt.get(self.value, None)

@property
    def uts46_status(self):
        return ' '.join(self.uts46_data)

def diagnose_codepoint(codepoint, args, ucdata):

cp = CodePoint(codepoint, ucdata=ucdata)

print('U+{:04X}:'.format(codepoint))
    print('   Name:             {}'.format(cp.name))
    print('1  Exceptions:       {}'.format(exceptions.get(codepoint, False)))
    print('2  Backwards Compat: {}'.format(backwardscompatible.get(codepoint, False)))
    print('3  Unassigned:       {}'.format(cp.unassigned))
    print('4  LDH:              {}'.format(cp.ldh))
    print('   Properties:       {}'.format(' '.join(sorted(ucdata.ucd_props.get(codepoint, ['None'])))))
    print('5  .Join Control:    {}'.format(cp.join_control))
    print('   NFKC CF:          {}'.format(' '.join(['U+{:04X}'.format(ord(x)) for x in cp.nfkc_cf])))
    print('6  .Unstable:        {}'.format(cp.unstable))
    print('7  .Ignorable Prop:  {}'.format(cp.in_ignorableproperties))
    print('   Block:            {}'.format(ucdata.ucd_block.get(codepoint, None)))
    print('8  .Ignorable Block: {}'.format(cp.in_ignorableblocks))
    print('   Hangul Syll Type: {}'.format(ucdata.ucd_hst.get(codepoint, None)))
    print('9  .Old Hangul Jamo: {}'.format(cp.oldhanguljamo))
    print('   General Category: {}'.format(cp.general_category))
    print('10 .Letters Digits:  {}'.format(cp.in_lettersdigits))
    print('== IDNA 2008:        {}'.format(cp.idna2008_status))
    print('== UTS 46:           {}'.format(cp.uts46_status))
    print('(Unicode {} [sys:{}])'.format(ucdata.version, ucdata.system_version))

def ucdrange(start, end):
    if start == end:
        return ('{:04X}'.format(start.value), start.name)
    else:
        return ('{:04X}..{:04X}'.format(start.value, end.value),
                '{}..{}'.format(start.name, end.name))

def upper_hex(value):
    num = hex(value)
    return num[:2] + num[2:].upper()

def optimised_list(d):
    values = intranges_from_list(d)
    if len(values) == 1:
        for value in values:
            # Respect ruff format style
            yield '({},),'.format(upper_hex(value))
    else:
        yield '('
        for value in values:
            yield '        {},'.format(upper_hex(value))
        yield '    ),'

def make_table(args, ucdata):

last_status = None
    cps = []
    table_data = []

for cp in ucdata.codepoints():
        status = cp.idna2008_status
        if (last_status and last_status != status):
            (values, description) = ucdrange(cps[0], cps[-1])
            table_data.append([values, last_status, description])
            cps = []
        last_status = status
        cps.append(cp)
    (values, description) = ucdrange(cps[0], cps[-1])
    table_data.append([values, last_status, description])

if args.dir:

f = open('{}/idna-table-{}.txt'.format(args.dir, ucdata.version), 'wb')
        for row in table_data:
            f.write('{:12}; {:12}# {:.44}\n'.format(*row).encode('ascii'))
        f.close()

else:

for row in table_data:
            print('{:12}; {:12}# {:.44}'.format(*row))

def idna_libdata(ucdata):

yield '# This file is automatically generated by tools/idna-data\n'
    yield '__version__ = "{}"\n'.format(ucdata.version)

#
    # Script classifications are used by some CONTEXTO rules in RFC 5891
    #
    yield 'scripts = {'
    for script in SCRIPT_WHITELIST:
        prefix = '    "{}": '.format(script)
        for line in optimised_list(ucdata.ucd_s[script]):
            yield prefix + line
            prefix = ''
    yield '}'

#
    # Joining types are used by CONTEXTJ rule A.1
    #
    yield 'joining_types = {'
    for cp in ucdata.codepoints():
        if cp.joining_type:
            yield '    0x{:X}: {},'.format(cp.value, ord(cp.joining_type))
    yield '}'

#
    # These are the classification of codepoints into PVALID, CONTEXTO, CONTEXTJ, etc.
    #
    yield 'codepoint_classes = {'
    classes = {}
    for cp in ucdata.codepoints():
        status = cp.idna2008_status
        if status in ('UNASSIGNED', 'DISALLOWED'):
            continue
        if not status in classes:
            classes[status] = set()
        classes[status].add(cp.value)
    for status in ['PVALID', 'CONTEXTJ', 'CONTEXTO']:
        prefix = '    "{}": '.format(status)
        for line in optimised_list(classes[status]):
            yield prefix + line
            prefix = ''
    yield '}'

def uts46_ranges(ucdata):

last = (None, None)
    for cp in ucdata.codepoints():
        fields = cp.uts46_data
        if not fields:
            continue
        status, mapping = UTS46_STATUSES[fields[0]]
        if mapping:
            mapping = ''.join(chr(int(codepoint, 16)) for codepoint in fields[1].split())
            mapping = mapping.replace('\\', '\\\\')
        else:
            mapping = None
        if cp.value > 255 and (status, mapping) == last:
            continue
        last = (status, mapping)

if mapping is not None:
            if '"' in mapping:
                yield '(0x{:X}, "{}", \'{}\')'.format(cp.value, status, mapping)
            else:
                yield '(0x{:X}, "{}", "{}")'.format(cp.value, status, mapping)
        else:
            yield '(0x{:X}, "{}")'.format(cp.value, status)

def uts46_libdata(ucdata):

yield '# This file is automatically generated by tools/idna-data'
    yield '# vim: set fileencoding=utf-8 :\n'
    yield 'from typing import List, Tuple, Union\n'
    yield '"""IDNA Mapping Table from UTS46."""\n\n'

yield '__version__ = "{}"\n'.format(ucdata.version)

idx = -1
    for row in uts46_ranges(ucdata):
        idx += 1
        if idx % UTS46_SEGMENT_SIZE == 0:
            if idx != 0:
                yield '    ]\n'
            yield '\ndef _seg_{}() -> List[Union[Tuple[int, str], Tuple[int, str, str]]]:\n    return ['.format(idx // UTS46_SEGMENT_SIZE)
        yield '        {},'.format(row)
    yield '    ]\n'

yield '\nuts46data = tuple('
    yield '    _seg_0()'
    for i in range(1, idx // UTS46_SEGMENT_SIZE + 1):
        yield '    + _seg_{}()'.format(i)
    yield ')  # type: Tuple[Union[Tuple[int, str], Tuple[int, str, str]], ...]'

def make_libdata(args, ucdata):

dest_dir = args.dir or '.'

target_filename = os.path.join(dest_dir, 'idnadata.py')
    with open(target_filename, 'wb') as target:
        for line in idna_libdata(ucdata):
            target.write((line + '\n').encode('utf-8'))

target_filename = os.path.join(dest_dir, 'uts46data.py')
    with open(target_filename, 'wb') as target:
        for line in uts46_libdata(ucdata):
            target.write((line + '\n').encode('utf-8'))

def arg_error(message, parser):

parser.print_usage()
    print('{}: error: {}'.format(sys.argv[0], message))
    sys.exit(2)

def main():

parser = argparse.ArgumentParser(description='Determine IDNA code-point validity data')
    parser.add_argument('action', type=str, default='preferred',
                        help='Task to perform (make-libdata, make-tables, <codepoint>)')

parser.add_argument('--version', type=str, default='preferred',
                        help='Unicode version to use (preferred, latest, <x.y.z>)')
    parser.add_argument('--source', type=str, default=None,
                        help='Where to fetch Unicode data (file path)')
    parser.add_argument('--dir', type=str, default=None, help='Where to export the output')
    parser.add_argument('--cache', type=str, default=None, help='Where to cache Unicode data')
    parser.add_argument('--no-cache', action='store_true', help='Don\'t cache Unicode data')
    libdata = parser.add_argument_group('make-libdata', 'Make module data for Python IDNA library')

tables = parser.add_argument_group('make-table', 'Make IANA-style reference table')

codepoint = parser.add_argument_group('codepoint',
                                          'Display related data for given codepoint (e.g. U+0061)')

args = parser.parse_args()

if args.version == 'preferred':
        target_version = PREFERRED_VERSION
    else:
        target_version = args.version

if args.cache and args.no_cache:
        arg_error('I can\'t both --cache and --no-cache', parser)
    cache = args.cache or DEFAULT_CACHE_DIR
    if args.no_cache:
        cache = None

ucdata = UnicodeData(target_version, cache, args)

if args.action == 'make-table':
        make_table(args, ucdata)
    elif args.action == 'make-libdata':
        make_libdata(args, ucdata)
    else:
        result = re.match(r'(?i)^(U\+|)(?P<cp>[0-9A-F]{4,6})$', args.action)
        if result:
            codepoint = int(result.group('cp'), 16)
            diagnose_codepoint(codepoint, args, ucdata)
            sys.exit(0)
        arg_error('Don\'t recognize action or codepoint value', parser)

if __name__ == '__main__':
    main()

${this.title}

Code Editor : idna-data