differenttext.sh

#!/usr/bin/env bash

declare -A small=(
    ['W']='ⱽ'
    ['A']='ᴬ'
    ['B']='ᴮ'
    ['D']='ᴰ'
    ['E']='ᴱ'
    ['G']='ᴳ'
    ['H']='ᴴ'
    ['I']='ᴵ'
    ['J']='ᴶ'
    ['K']='ᴷ'
    ['L']='ᴸ'
    ['M']='ᴹ'
    ['N']='ᴺ'
    ['O']='ᴼ'
    ['P']='ᴾ'
    ['R']='ᴿ'
    ['T']='ᵀ'
    ['U']='ᵁ'
    ['V']='ᵂ'
    ['a']='ᵃ'
    ['b']='ᵇ'
    ['c']='ᶜ'
    ['d']='ᵈ'
    ['e']='ᵉ'
    ['f']='ᶠ'
    ['g']='ᵍ'
    ['h']='ʰ'
    ['i']='ⁱ'
    ['j']='ʲ'
    ['k']='ᵏ'
    ['l']='ˡ'
    ['m']='ᵐ'
    ['n']='ⁿ'
    ['o']='ᵒ'
    ['p']='ᵖ'
    ['r']='ʳ'
    ['s']='ˢ'
    ['t']='ᵗ'
    ['u']='ᵘ'
    ['v']='ᵛ'
    ['w']='ʷ'
    ['x']='ˣ'
    ['y']='ʸ'
    ['z']='ᶻ'
    ['0']='⁰'
    ['1']='¹'
    ['2']='²'
    ['3']='³'
    ['4']='⁴'
    ['5']='⁵'
    ['6']='⁶'
    ['7']='⁷'
    ['8']='⁸'
    ['9']='⁹'
);

declare -A script=(
    ['A']='𝒜'
    ['B']='ℬ'
    ['C']='𝒞'
    ['D']='𝒟'
    ['E']='ℰ'
    ['F']='ℱ'
    ['G']='𝒢'
    ['H']='ℋ'
    ['I']='ℐ'
    ['J']='𝒥'
    ['K']='𝒦'
    ['L']='ℒ'
    ['M']='ℳ'
    ['N']='𝒩'
    ['O']='𝒪'
    ['P']='𝒫'
    ['Q']='𝒬'
    ['R']='ℛ'
    ['S']='𝒮'
    ['T']='𝒯'
    ['U']='𝒰'
    ['V']='𝒱'
    ['W']='𝒲'
    ['X']='𝒳'
    ['Y']='𝒴'
    ['Z']='𝒵'
    ['a']='𝒶'
    ['b']='𝒷'
    ['c']='𝒸'
    ['d']='𝒹'
    ['e']='ℯ'
    ['f']='𝒻'
    ['g']='ℊ'
    ['h']='𝒽'
    ['i']='𝒾'
    ['j']='𝒿'
    ['k']='𝓀'
    ['l']='𝓁'
    ['m']='𝓂'
    ['n']='𝓃'
    ['o']='ℴ'
    ['p']='𝓅'
    ['q']='𝓆'
    ['r']='𝓇'
    ['s']='𝓈'
    ['t']='𝓉'
    ['u']='𝓊'
    ['v']='𝓋'
    ['w']='𝓌'
    ['x']='𝓍'
    ['y']='𝓎'
    ['z']='𝓏'
);

declare -A boldscript=(
    ['A']='𝓐'
    ['B']='𝓑'
    ['C']='𝓒'
    ['D']='𝓓'
    ['E']='𝓔'
    ['F']='𝓕'
    ['G']='𝓖'
    ['H']='𝓗'
    ['I']='𝓘'
    ['J']='𝓙'
    ['K']='𝓚'
    ['L']='𝓛'
    ['M']='𝓜'
    ['N']='𝓝'
    ['O']='𝓞'
    ['P']='𝓟'
    ['Q']='𝓠'
    ['R']='𝓡'
    ['S']='𝓢'
    ['T']='𝓣'
    ['U']='𝓤'
    ['V']='𝓥'
    ['W']='𝓦'
    ['X']='𝓧'
    ['Y']='𝓨'
    ['Z']='𝓩'
    ['a']='𝓪'
    ['b']='𝓫'
    ['c']='𝓬'
    ['d']='𝓭'
    ['e']='𝓮'
    ['f']='𝓯'
    ['g']='𝓰'
    ['h']='𝓱'
    ['i']='𝓲'
    ['j']='𝓳'
    ['k']='𝓴'
    ['l']='𝓵'
    ['m']='𝓶'
    ['n']='𝓷'
    ['o']='𝓸'
    ['p']='𝓹'
    ['q']='𝓺'
    ['r']='𝓻'
    ['s']='𝓼'
    ['t']='𝓽'
    ['u']='𝓾'
    ['v']='𝓿'
    ['w']='𝔀'
    ['x']='𝔁'
    ['y']='𝔂'
    ['z']='𝔃'
);

declare -A doublestruck=(
    ['A']='𝔸'
    ['B']='𝔹'
    ['C']='ℂ'
    ['D']='𝔻'
    ['E']='𝔼'
    ['F']='𝔽'
    ['G']='𝔾'
    ['H']='ℍ'
    ['I']='𝕀'
    ['J']='𝕁'
    ['K']='𝕂'
    ['L']='𝕃'
    ['M']='𝕄'
    ['N']='ℕ'
    ['O']='𝕆'
    ['P']='ℙ'
    ['Q']='ℚ'
    ['R']='ℝ'
    ['S']='𝕊'
    ['T']='𝕋'
    ['U']='𝕌'
    ['V']='𝕍'
    ['W']='𝕎'
    ['X']='𝕏'
    ['Y']='𝕐'
    ['Z']='ℤ'
    ['a']='𝕒'
    ['b']='𝕓'
    ['c']='𝕔'
    ['d']='𝕕'
    ['e']='𝕖'
    ['f']='𝕗'
    ['g']='𝕘'
    ['h']='𝕙'
    ['i']='𝕚'
    ['j']='𝕛'
    ['k']='𝕜'
    ['l']='𝕝'
    ['m']='𝕞'
    ['n']='𝕟'
    ['o']='𝕠'
    ['p']='𝕡'
    ['q']='𝕢'
    ['r']='𝕣'
    ['s']='𝕤'
    ['t']='𝕥'
    ['u']='𝕦'
    ['v']='𝕧'
    ['w']='𝕨'
    ['x']='𝕩'
    ['y']='𝕪'
    ['z']='𝕫'


);

function dothing() {
    local function=$1;
    IFS='';
    while read -r -d '' -N1 char; do
        eval 'echo -n ${'$function'[$char]-$char}';
    done < <(while read line; do echo "$line"; done)
}

case $1 in
    small) dothing small;;
    script) dothing script;;
    boldscript) dothing boldscript;;
    doublestruck) dothing doublestruck;;
    *) echo "Available styles are small, script, boldscript, doublestruck"
esac
echo;