monospaced-progress-bar.sh

# This will generate a monospaced progress bar with a progress percentage displayed in the center of it
# Usage: progress-bar <percentage> <width>
# Example output: "———————— 80% ——————   "
progress-bar() {
  local percentage=$1
  local width=$2

  local fill_bars; fill_bars=$(( width * percentage / 100 ))
  local fill_spaces; fill_spaces=$(( width - fill_bars ))
  local bar=""

  for (( i = 1; i <= $width; i++ )); do
    [ $i -le $fill_bars ] && bar+="—" || bar+=" "
  done

  local percentage_str=" ${percentage}% "
  local str_size=${#percentage_str}
  local first_cut=$(( (width - str_size) / 2 ))
  local last_cut=$(( first_cut + str_size ))
  echo "${bar:0:$first_cut}${percentage_str}${bar:$last_cut}"
}