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{ lib, ... }:
with lib;
let
# Convert 2 consecutive characters from a string from hexadecimal to decimal
hex2dec = str: start:
let
conversionTable = {
"0" = 0; "1" = 1; "2" = 2; "3" = 3; "4" = 4;
"5" = 5; "6" = 6; "7" = 7; "8" = 8; "9" = 9;
"a" = 10; "b" = 11; "c" = 12;
"d" = 13; "e" = 14; "f" = 15;
};
firstHexDigit = toLower (elemAt (stringToCharacters str) start);
secondHexDigit = toLower (elemAt (stringToCharacters str) (start + 1));
in conversionTable.${firstHexDigit} * 16 + conversionTable.${secondHexDigit};
makeColorCode = color:
let genComponent = hex2dec color;
in "${toString (genComponent 1)};${toString (genComponent 3)};${toString (genComponent 5)}";
hex2RGB = color:
let genComponent = hex2dec color;
in {
red = genComponent 1;
green = genComponent 3;
blue = genComponent 5;
};
fgEscapeCode = hexCode: "[38;2;${makeColorCode hexCode}m";
bgEscapeCode = hexCode: "[48;2;${makeColorCode hexCode}m";
in
{
inherit fgEscapeCode bgEscapeCode hex2RGB;
}
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