# Licensed under a 3-clause BSD style license - see LICENSE.rst

"""

Handles the "Unicode" unit format.

"""

from __future__ import annotations

from typing import TYPE_CHECKING

from . import console

if TYPE_CHECKING:

from typing import ClassVar

from astropy.units import NamedUnit

from astropy.units.typing import Real

class Unicode(console.Console):

"""

Output-only format to display pretty formatting at the console

using Unicode characters.

For example::

>>> import astropy.units as u

>>> print(u.bar.decompose().to_string('unicode'))

100000 kg m⁻¹ s⁻²

>>> print(u.bar.decompose().to_string('unicode', fraction='multiline'))

kg

100000 ────

m s²

>>> print(u.bar.decompose().to_string('unicode', fraction='inline'))

100000 kg / (m s²)

"""

_times: ClassVar[str] = "×"

_line: ClassVar[str] = "─"

@classmethod

def _format_mantissa(cls, m: str) -> str:

return m.replace("-", "−")

@classmethod

def _format_unit_power(cls, unit: NamedUnit, power: Real = 1) -> str:

name = unit._get_format_name(cls.name)

# Check for superscript units

if power != 1:

if name in ("°", "e⁻", "″", "′", "ʰ"):

name = unit.short_names[0]

name += cls._format_power(power)

return name

@classmethod

def _format_superscript(cls, number: str) -> str:

mapping = str.maketrans(

{

"0": "⁰",

"1": "¹",

"2": "²",

"3": "³",

"4": "⁴",

"5": "⁵",

"6": "⁶",

"7": "⁷",

"8": "⁸",

"9": "⁹",

"-": "⁻",

"−": "⁻",

# This is actually a "raised omission bracket", but it's

# the closest thing I could find to a superscript solidus.

"/": "⸍",

}

)

return number.translate(mapping)