355 lines
10 KiB
Python
355 lines
10 KiB
Python
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# unicode.py
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import sys
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from itertools import filterfalse
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from typing import List, Tuple, Union
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class _lazyclassproperty:
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def __init__(self, fn):
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self.fn = fn
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self.__doc__ = fn.__doc__
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self.__name__ = fn.__name__
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def __get__(self, obj, cls):
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if cls is None:
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cls = type(obj)
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if not hasattr(cls, "_intern") or any(
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cls._intern is getattr(superclass, "_intern", [])
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for superclass in cls.__mro__[1:]
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):
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cls._intern = {}
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attrname = self.fn.__name__
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if attrname not in cls._intern:
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cls._intern[attrname] = self.fn(cls)
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return cls._intern[attrname]
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UnicodeRangeList = List[Union[Tuple[int, int], Tuple[int]]]
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class unicode_set:
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"""
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A set of Unicode characters, for language-specific strings for
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``alphas``, ``nums``, ``alphanums``, and ``printables``.
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A unicode_set is defined by a list of ranges in the Unicode character
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set, in a class attribute ``_ranges``. Ranges can be specified using
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2-tuples or a 1-tuple, such as::
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_ranges = [
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(0x0020, 0x007e),
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(0x00a0, 0x00ff),
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(0x0100,),
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]
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Ranges are left- and right-inclusive. A 1-tuple of (x,) is treated as (x, x).
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A unicode set can also be defined using multiple inheritance of other unicode sets::
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class CJK(Chinese, Japanese, Korean):
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pass
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"""
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_ranges: UnicodeRangeList = []
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@_lazyclassproperty
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def _chars_for_ranges(cls):
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ret = []
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for cc in cls.__mro__:
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if cc is unicode_set:
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break
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for rr in getattr(cc, "_ranges", ()):
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ret.extend(range(rr[0], rr[-1] + 1))
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return [chr(c) for c in sorted(set(ret))]
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@_lazyclassproperty
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def printables(cls):
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"""all non-whitespace characters in this range"""
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return "".join(filterfalse(str.isspace, cls._chars_for_ranges))
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@_lazyclassproperty
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def alphas(cls):
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"""all alphabetic characters in this range"""
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return "".join(filter(str.isalpha, cls._chars_for_ranges))
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@_lazyclassproperty
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def nums(cls):
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"""all numeric digit characters in this range"""
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return "".join(filter(str.isdigit, cls._chars_for_ranges))
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@_lazyclassproperty
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def alphanums(cls):
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"""all alphanumeric characters in this range"""
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return cls.alphas + cls.nums
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@_lazyclassproperty
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def identchars(cls):
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"""all characters in this range that are valid identifier characters, plus underscore '_'"""
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return "".join(
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sorted(
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set(
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"".join(filter(str.isidentifier, cls._chars_for_ranges))
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+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzªµº"
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+ "ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ"
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+ "_"
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)
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)
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)
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@_lazyclassproperty
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def identbodychars(cls):
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"""
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all characters in this range that are valid identifier body characters,
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plus the digits 0-9, and · (Unicode MIDDLE DOT)
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"""
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identifier_chars = set(
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c for c in cls._chars_for_ranges if ("_" + c).isidentifier()
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)
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return "".join(sorted(identifier_chars | set(cls.identchars + "0123456789·")))
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@_lazyclassproperty
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def identifier(cls):
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"""
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a pyparsing Word expression for an identifier using this range's definitions for
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identchars and identbodychars
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"""
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from pyparsing import Word
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return Word(cls.identchars, cls.identbodychars)
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class pyparsing_unicode(unicode_set):
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"""
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A namespace class for defining common language unicode_sets.
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"""
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# fmt: off
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# define ranges in language character sets
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_ranges: UnicodeRangeList = [
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(0x0020, sys.maxunicode),
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]
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class BasicMultilingualPlane(unicode_set):
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"""Unicode set for the Basic Multilingual Plane"""
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_ranges: UnicodeRangeList = [
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(0x0020, 0xFFFF),
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]
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class Latin1(unicode_set):
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"""Unicode set for Latin-1 Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0020, 0x007E),
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(0x00A0, 0x00FF),
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]
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class LatinA(unicode_set):
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"""Unicode set for Latin-A Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0100, 0x017F),
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]
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class LatinB(unicode_set):
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"""Unicode set for Latin-B Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0180, 0x024F),
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]
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class Greek(unicode_set):
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"""Unicode set for Greek Unicode Character Ranges"""
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_ranges: UnicodeRangeList = [
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(0x0342, 0x0345),
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(0x0370, 0x0377),
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(0x037A, 0x037F),
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(0x0384, 0x038A),
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(0x038C,),
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(0x038E, 0x03A1),
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(0x03A3, 0x03E1),
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(0x03F0, 0x03FF),
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(0x1D26, 0x1D2A),
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(0x1D5E,),
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(0x1D60,),
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(0x1D66, 0x1D6A),
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(0x1F00, 0x1F15),
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(0x1F18, 0x1F1D),
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(0x1F20, 0x1F45),
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(0x1F48, 0x1F4D),
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(0x1F50, 0x1F57),
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(0x1F59,),
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(0x1F5B,),
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(0x1F5D,),
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(0x1F5F, 0x1F7D),
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(0x1F80, 0x1FB4),
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(0x1FB6, 0x1FC4),
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(0x1FC6, 0x1FD3),
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(0x1FD6, 0x1FDB),
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(0x1FDD, 0x1FEF),
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(0x1FF2, 0x1FF4),
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(0x1FF6, 0x1FFE),
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(0x2129,),
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(0x2719, 0x271A),
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(0xAB65,),
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(0x10140, 0x1018D),
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(0x101A0,),
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(0x1D200, 0x1D245),
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(0x1F7A1, 0x1F7A7),
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]
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class Cyrillic(unicode_set):
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"""Unicode set for Cyrillic Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0400, 0x052F),
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(0x1C80, 0x1C88),
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(0x1D2B,),
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(0x1D78,),
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(0x2DE0, 0x2DFF),
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(0xA640, 0xA672),
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(0xA674, 0xA69F),
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(0xFE2E, 0xFE2F),
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]
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class Chinese(unicode_set):
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"""Unicode set for Chinese Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x2E80, 0x2E99),
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(0x2E9B, 0x2EF3),
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(0x31C0, 0x31E3),
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(0x3400, 0x4DB5),
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(0x4E00, 0x9FEF),
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(0xA700, 0xA707),
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(0xF900, 0xFA6D),
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(0xFA70, 0xFAD9),
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(0x16FE2, 0x16FE3),
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(0x1F210, 0x1F212),
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(0x1F214, 0x1F23B),
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(0x1F240, 0x1F248),
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(0x20000, 0x2A6D6),
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(0x2A700, 0x2B734),
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(0x2B740, 0x2B81D),
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(0x2B820, 0x2CEA1),
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(0x2CEB0, 0x2EBE0),
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(0x2F800, 0x2FA1D),
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]
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class Japanese(unicode_set):
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"""Unicode set for Japanese Unicode Character Range, combining Kanji, Hiragana, and Katakana ranges"""
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class Kanji(unicode_set):
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"Unicode set for Kanji Unicode Character Range"
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_ranges: UnicodeRangeList = [
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(0x4E00, 0x9FBF),
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(0x3000, 0x303F),
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]
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class Hiragana(unicode_set):
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"""Unicode set for Hiragana Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x3041, 0x3096),
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(0x3099, 0x30A0),
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(0x30FC,),
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(0xFF70,),
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(0x1B001,),
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(0x1B150, 0x1B152),
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(0x1F200,),
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]
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class Katakana(unicode_set):
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"""Unicode set for Katakana Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x3099, 0x309C),
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(0x30A0, 0x30FF),
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(0x31F0, 0x31FF),
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(0x32D0, 0x32FE),
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(0xFF65, 0xFF9F),
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(0x1B000,),
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(0x1B164, 0x1B167),
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(0x1F201, 0x1F202),
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(0x1F213,),
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]
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漢字 = Kanji
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カタカナ = Katakana
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ひらがな = Hiragana
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_ranges = (
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Kanji._ranges
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+ Hiragana._ranges
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+ Katakana._ranges
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)
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class Hangul(unicode_set):
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"""Unicode set for Hangul (Korean) Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x1100, 0x11FF),
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(0x302E, 0x302F),
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(0x3131, 0x318E),
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(0x3200, 0x321C),
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(0x3260, 0x327B),
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(0x327E,),
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(0xA960, 0xA97C),
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(0xAC00, 0xD7A3),
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(0xD7B0, 0xD7C6),
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(0xD7CB, 0xD7FB),
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(0xFFA0, 0xFFBE),
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(0xFFC2, 0xFFC7),
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(0xFFCA, 0xFFCF),
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(0xFFD2, 0xFFD7),
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(0xFFDA, 0xFFDC),
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]
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Korean = Hangul
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class CJK(Chinese, Japanese, Hangul):
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"""Unicode set for combined Chinese, Japanese, and Korean (CJK) Unicode Character Range"""
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class Thai(unicode_set):
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"""Unicode set for Thai Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0E01, 0x0E3A),
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(0x0E3F, 0x0E5B)
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]
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class Arabic(unicode_set):
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"""Unicode set for Arabic Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0600, 0x061B),
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(0x061E, 0x06FF),
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(0x0700, 0x077F),
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]
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class Hebrew(unicode_set):
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"""Unicode set for Hebrew Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0591, 0x05C7),
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(0x05D0, 0x05EA),
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(0x05EF, 0x05F4),
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(0xFB1D, 0xFB36),
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(0xFB38, 0xFB3C),
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(0xFB3E,),
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(0xFB40, 0xFB41),
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(0xFB43, 0xFB44),
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(0xFB46, 0xFB4F),
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]
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class Devanagari(unicode_set):
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"""Unicode set for Devanagari Unicode Character Range"""
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_ranges: UnicodeRangeList = [
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(0x0900, 0x097F),
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(0xA8E0, 0xA8FF)
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]
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BMP = BasicMultilingualPlane
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# add language identifiers using language Unicode
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العربية = Arabic
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中文 = Chinese
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кириллица = Cyrillic
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Ελληνικά = Greek
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עִברִית = Hebrew
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日本語 = Japanese
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한국어 = Korean
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ไทย = Thai
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देवनागरी = Devanagari
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# fmt: on
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