# coding: utf8
from __future__ import unicode_literals

from ..punctuation import TOKENIZER_PREFIXES, TOKENIZER_INFIXES
from ..char_classes import LIST_PUNCT, LIST_ELLIPSES, LIST_QUOTES, CURRENCY
from ..char_classes import CONCAT_QUOTES, UNITS, ALPHA, ALPHA_LOWER, ALPHA_UPPER
from ..char_classes import merge_chars


ELISION = "' ’".replace(" ", "")
HYPHENS = r"- – — ‐ ‑".replace(" ", "")
_prefixes_elision = "d l n"
_prefixes_elision += " " + _prefixes_elision.upper()
_hyphen_suffixes = "ce clés elle en il ils je là moi nous on t vous"
_hyphen_suffixes += " " + _hyphen_suffixes.upper()


_prefixes = TOKENIZER_PREFIXES + [
    r"(?:({pe})[{el}])(?=[{a}])".format(a=ALPHA, el=ELISION, pe=merge_chars(_prefixes_elision))
]

_suffixes = (
    LIST_PUNCT
    + LIST_ELLIPSES
    + LIST_QUOTES
    + [
        r"(?<=[0-9])\+",
        r"(?<=°[FfCcKk])\.",  # °C. -> ["°C", "."]
        r"(?<=[0-9])%",  # 4% -> ["4", "%"]
        r"(?<=[0-9])(?:{c})".format(c=CURRENCY),
        r"(?<=[0-9])(?:{u})".format(u=UNITS),
        r"(?<=[0-9{al}{e}(?:{q})])\.".format(
            al=ALPHA_LOWER, e=r"%²\-\+", q=CONCAT_QUOTES
        ),
        r"(?<=[{au}][{au}])\.".format(au=ALPHA_UPPER),
        r"(?<=[{a}])[{h}]({hs})".format(a=ALPHA, h=HYPHENS, hs=merge_chars(_hyphen_suffixes)),
    ]
)

_infixes = TOKENIZER_INFIXES + [
    r"(?<=[{a}][{el}])(?=[{a}])".format(a=ALPHA, el=ELISION)
]


TOKENIZER_PREFIXES = _prefixes
TOKENIZER_SUFFIXES = _suffixes
TOKENIZER_INFIXES = _infixes