vhc

#!/usr/bin/env bash

temporary=$(mktemp) || exit 1
_e='echo -e'
option=
string=
size=0



config() {
    search="s/[vhc|λ]+:([a-zA-Z0-9,]*);(.*)\$/"""
    option=$($_e "${1}" | sed -r "${search}"'\1/')
    string=$($_e "${1}" | sed -r "${search}"'\2/')
    strlen=${#string}
}

while read -r  string
do config """${string}"
    $_e """""${string}" >> "${temporary}"
    [[ 0 -lt ${strlen} ]] && size=${strlen}
done

# OPTIONS
case "${option,,}" in
    sides)               adjust=2; corner=('⎣'    '⎦'   '⎡'    '⎤'); lines=(' ' ' ⎥'    ' ' '⎢ '   );;
    prettybox|pretty)    adjust=2; corner=('└'    '┘'   '┌'    '┐'); lines=('─' ' │'    '─' '│ '   );;
    quotes)              adjust=2; corner=('"'    ' '   ' '    '"'); lines=(' ' ' '     ' ' ' '    );;
    docblock)            adjust=2; corner=(' **/' ' '   '/**'  ' '); lines=(' ' ' '     ' ' ' * '  );;
    cccomment)           adjust=2; corner=(' **/' ' '   '/**'  ' '); lines=(' ' ' '     ' ' ' ** ' );;
    ccomment)            adjust=2; corner=(' */'  ' '   '/*'   ' '); lines=(' ' ' '     ' ' ' * '  );;
    lcomment)            adjust=2; corner=('//'   ' '   '//'   ' '); lines=(' ' ' '     ' ' '// '  );;
    box)                 adjust=2; corner=('+'    '+'   '+'    '+'); lines=('-' ' |'    '-' '| '   );;
    star|stars|asterisk) adjust=2; corner=('*'    '*'   '*'    '*'); lines=('*' ' *'    '*' '* '   );;
    ernjs|ernando|*)     adjust=8; corner=('#'    '#'   '#'    '#'); lines=('#' ' ####' '#' '#### ')
esac
#/OPTIONS

str_repeat() {
    n="${1}"
    while [[ ${n} -gt 0 ]]
    do  $_e   -n "${2}"
        n=$((  n -  1 ))
    done
}

remove_trail() {
    sed -e 's/[ ]*$//g'
}

line() {
    [ $# -eq 1 ] \
    && str_repeat  "$((size + adjust))" "${1}" \
    && exit

    $_e "${corner[${1}]}$(line "${lines[${1}]}")${corner[${2}]}"
}

line_top() {
    line 0 1 | remove_trail
}

line_bottom() {
    line 2 3 | remove_trail
}

trap  line_top \
EXIT; line_bottom

while read -r string
do tab=$(printf '%*s' $((size - ${#string})) "")
    $_e "${lines[3]}${string}${tab}${lines[1]}" | remove_trail
done  < "${temporary}"
rm      "${temporary}"