def color_by_name(name, fg=None, bg=None):
"""Converts a color name to a color token, foreground name,
and background name. Will take into consideration current foreground
and background colors, if provided.
Parameters
----------
name : str
Color name.
fg : str, optional
Foreground color name.
bg : str, optional
Background color name.
Returns
-------
tok : Token
Pygments Token.Color subclass
fg : str or None
New computed foreground color name.
bg : str or None
New computed background color name.
"""
name = name.upper()
if name in ("RESET", "NO_COLOR"):
return Color.DEFAULT, None, None
m = RE_BACKGROUND.search(name)
if m is None: # must be foreground color
fg = norm_name(name)
else:
bg = norm_name(name)
# assemble token
if fg is None and bg is None:
tokname = "RESET"
elif fg is None:
tokname = bg
elif bg is None:
tokname = fg
else:
tokname = fg + "__" + bg
tok = getattr(Color, tokname)
return tok, fg, bg
def color_by_name(name, fg=None, bg=None):
"""Converts a color name to a color token, foreground name,
and background name. Will take into consideration current foreground
and background colors, if provided.
Parameters
----------
name : str
Color name.
fg : str, optional
Foreground color name.
bg : str, optional
Background color name.
Returns
-------
tok : Token
Pygments Token.Color subclass
fg : str or None
New computed foreground color name.
bg : str or None
New computed background color name.
"""
name = name.upper()
if name == 'NO_COLOR':
return Color.NO_COLOR, None, None
m = RE_BACKGROUND.search(name)
if m is None: # must be foreground color
fg = norm_name(name)
else:
bg = norm_name(name)
# assemble token
if fg is None and bg is None:
tokname = 'NO_COLOR'
elif fg is None:
tokname = bg
elif bg is None:
tokname = fg
else:
tokname = fg + '__' + bg
tok = getattr(Color, tokname)
return tok, fg, bg
def color_token_by_name(xc: tuple, styles=None) -> Color:
"""Returns (color) token corresponding to Xonsh color tuple, side effect: defines token is defined in styles"""
if not styles:
try:
styles = builtins.__xonsh__.shell.shell.styler.styles
except AttributeError:
return Color
tokName = xc[0]
pc = color_name_to_pygments_code(xc[0], styles)
if len(xc) > 1:
pc += " " + color_name_to_pygments_code(xc[1], styles)
tokName += "__" + xc[1]
token = getattr(Color, norm_name(tokName))
styles[token] = pc
return token
def color_name_to_pygments_code(name, styles):
"""Converts a xonsh color name to a pygments color code."""
token = getattr(Color, norm_name(name))
if token in styles:
return styles[token]
m = RE_XONSH_COLOR.match(name)
if m is None:
raise ValueError("{!r} is not a color!".format(name))
parts = m.groupdict()
# convert regex match into actual pygments colors
if parts["reset"] is not None:
if parts["reset"] == "NO_COLOR":
warn_deprecated_no_color()
res = "noinherit"
elif parts["bghex"] is not None:
res = "bg:#" + parts["bghex"][3:]
elif parts["background"] is not None:
color = parts["color"]
if "#" in color:
fgcolor = color
else:
fgcolor = styles[getattr(Color, color)]
res = "bg:" + fgcolor
else:
# have regular, non-background color
mods = parts["modifiers"]
if mods is None:
mods = []
else:
mods = mods.strip("_").split("_")
mods = [PYGMENTS_MODIFIERS[mod] for mod in mods]
mods = list(filter(None, mods)) # remove unsupported entries
color = parts["color"]
if "#" in color:
mods.append(color)
else:
mods.append(styles[getattr(Color, color)])
res = " ".join(mods)
styles[token] = res
return res
def color_name_to_pygments_code(name, styles):
"""Converts a xonsh color name to a pygments color code."""
token = getattr(Color, norm_name(name))
if token in styles:
return styles[token]
m = RE_XONSH_COLOR.match(name)
if m is None:
raise ValueError("{!r} is not a color!".format(name))
parts = m.groupdict()
# convert regex match into actual pygments colors
if parts["nocolor"] is not None:
res = "noinherit"
elif parts["bghex"] is not None:
res = "bg:#" + parts["bghex"][3:]
elif parts["background"] is not None:
color = parts["color"]
if "#" in color:
fgcolor = color
else:
fgcolor = styles[getattr(Color, color)]
res = "bg:" + fgcolor
else:
# have regular, non-background color
mods = parts["modifiers"]
if mods is None:
mods = []
else:
mods = mods.strip("_").split("_")
mods = [PYGMENTS_MODIFIERS[mod] for mod in mods]
mods = list(filter(None, mods)) # remove unsupported entries
color = parts["color"]
if "#" in color:
mods.append(color)
else:
mods.append(styles[getattr(Color, color)])
res = " ".join(mods)
styles[token] = res
return res
