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109 lines (92 loc) · 2.86 KB
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import re
from functools import partial
from typing import Any
from collections.abc import Callable
from curtsies.formatstring import fmtstr, FmtStr
from curtsies.termformatconstants import (
FG_COLORS,
BG_COLORS,
colors as CURTSIES_COLORS,
)
from ..config import COLOR_LETTERS
from ..lazyre import LazyReCompile
COLORS = CURTSIES_COLORS + ("default",)
CNAMES = dict(zip(COLOR_LETTERS, COLORS))
# hack for finding the "inverse"
INVERSE_COLORS = {
CURTSIES_COLORS[idx]: CURTSIES_COLORS[
(idx + (len(CURTSIES_COLORS) // 2)) % len(CURTSIES_COLORS)
]
for idx in range(len(CURTSIES_COLORS))
}
INVERSE_COLORS["default"] = INVERSE_COLORS[CURTSIES_COLORS[0]]
def func_for_letter(
letter_color_code: str, default: str = "k"
) -> Callable[..., FmtStr]:
"""Returns FmtStr constructor for a bpython-style color code"""
if letter_color_code == "d":
letter_color_code = default
elif letter_color_code == "D":
letter_color_code = default.upper()
return partial(
fmtstr,
fg=CNAMES[letter_color_code.lower()],
bold=letter_color_code.isupper(),
)
def color_for_letter(letter_color_code: str, default: str = "k") -> str:
if letter_color_code == "d":
letter_color_code = default
return CNAMES[letter_color_code.lower()]
def parse(s: str) -> FmtStr:
"""Returns a FmtStr object from a bpython-formatted colored string"""
rest = s
stuff = []
while rest:
start, rest = peel_off_string(rest)
stuff.append(start)
return (
sum((fs_from_match(d) for d in stuff[1:]), fs_from_match(stuff[0]))
if len(stuff) > 0
else FmtStr()
)
def fs_from_match(d: dict[str, Any]) -> FmtStr:
atts = {}
color = "default"
if d["fg"]:
# this isn't according to spec as I understand it
if d["fg"].isupper():
d["bold"] = True
# TODO figure out why boldness isn't based on presence of \x02
color = CNAMES[d["fg"].lower()]
if color != "default":
atts["fg"] = FG_COLORS[color]
if d["bg"]:
if d["bg"] == "I":
# hack for finding the "inverse"
color = INVERSE_COLORS[color]
else:
color = CNAMES[d["bg"].lower()]
if color != "default":
atts["bg"] = BG_COLORS[color]
if d["bold"]:
atts["bold"] = True
return fmtstr(d["string"], **atts)
peel_off_string_re = LazyReCompile(
r"""(?P<colormarker>\x01
(?P<fg>[krgybmcwdKRGYBMCWD]?)
(?P<bg>[krgybmcwdKRGYBMCWDI]?)?)
(?P<bold>\x02?)
\x03
(?P<string>[^\x04]*)
\x04
(?P<rest>.*)
""",
re.VERBOSE | re.DOTALL,
)
def peel_off_string(s: str) -> tuple[dict[str, Any], str]:
m = peel_off_string_re.match(s)
assert m, repr(s)
d = m.groupdict()
rest = d["rest"]
del d["rest"]
return d, rest