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56 lines
1.5 KiB
Python
56 lines
1.5 KiB
Python
# coding: utf8
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from __future__ import unicode_literals
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from ..char_classes import LIST_PUNCT, LIST_ELLIPSES, LIST_QUOTES, CONCAT_QUOTES
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from ..char_classes import CONCAT_ICONS, UNITS, ALPHA, ALPHA_LOWER, ALPHA_UPPER
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# removing ° from the special icons to keep e.g. 99° as one token
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_concat_icons = CONCAT_ICONS.replace("\u00B0", "")
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_currency = r"\$¢£€¥฿"
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_quotes = CONCAT_QUOTES.replace("'", "")
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_prefixes = (
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[r"\+"]
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+ LIST_PUNCT
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+ LIST_ELLIPSES
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+ LIST_QUOTES
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+ [_concat_icons]
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+ [r"[,.:](?=[{a}])".format(a=ALPHA)]
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)
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_suffixes = (
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LIST_PUNCT
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+ LIST_ELLIPSES
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+ LIST_QUOTES
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+ [_concat_icons]
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+ [
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r"(?<=[0-9])\+",
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r"(?<=°[FfCcKk])\.",
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r"(?<=[0-9])(?:[{c}])".format(c=_currency),
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r"(?<=[0-9])(?:{u})".format(u=UNITS),
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r"(?<=[{al}{e}{q}(?:{c})])\.".format(
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al=ALPHA_LOWER, e=r"%²\-\+", q=CONCAT_QUOTES, c=_currency
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),
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r"(?<=[{al})])-e".format(al=ALPHA_LOWER),
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]
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)
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_infixes = (
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LIST_ELLIPSES
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+ [_concat_icons]
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+ [
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r"(?<=[{al}])\.(?=[{au}])".format(al=ALPHA_LOWER, au=ALPHA_UPPER),
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r"(?<=[{a}])[,!?](?=[{a}])".format(a=ALPHA),
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r"(?<=[{a}])[:<>=](?=[{a}])".format(a=ALPHA),
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r"(?<=[{a}])--(?=[{a}])".format(a=ALPHA),
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r"(?<=[{a}]),(?=[{a}])".format(a=ALPHA),
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r"(?<=[{a}])([{q}\)\]\(\[])(?=[\-{a}])".format(a=ALPHA, q=_quotes),
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]
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)
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TOKENIZER_PREFIXES = _prefixes
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TOKENIZER_SUFFIXES = _suffixes
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TOKENIZER_INFIXES = _infixes
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