Fuzzball desktop automation script

fuzzball.sh

#!/usr/bin/env bash

# Please Use Google Shell Style: https://google.github.io/styleguide/shell.xml

# ---- Start unofficial bash strict mode boilerplate
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -o errexit  # always exit on error
set -o errtrace # trap errors in functions as well
set -o pipefail # don't ignore exit codes when piping output
set -o posix    # more strict failures in subshells
# set -x          # enable debugging

IFS="$(printf "\n\t")"
# ---- End unofficial bash strict mode boilerplate

# https://stackoverflow.com/a/10660730/266795
rawurlencode() {
  local string="${1}"
  local strlen=${#string}
  local encoded=""
  local pos c o

  for ((pos = 0; pos < strlen; pos++)); do
    c=${string:$pos:1}
    case "$c" in
    [-_.~a-zA-Z0-9]) o="${c}" ;;
    *) printf -v o '%%%02x' "'$c" ;;
    esac
    encoded+="${o}"
  done
  echo "${encoded}"  # You can either set a return variable (FASTER)
  REPLY="${encoded}" #+or echo the result (EASIER)... or both... :p
}

main() {
  task_dir="$1"
  cd "${task_dir}"
  while true; do
    task=$(fd --type=file --type=symlink . | hs)

    if [[ "${task}" == "quit" ]]; then
      return
    fi
    if [[ -z "${task}" ]]; then
      continue
    fi
    if [[ -x "${task}" ]]; then
      "./${task}"
      continue
    fi
    if grep '%s' "${task}" >/dev/null; then
      # Task has placeholders we'll replace with a prompt
      query=$(~/bin/prompt-or-clipboard.sh)
      query=$(rawurlencode "${query}")
      args=$(cat "${task}" | sed "s/%s/${query}/g")
    else
      args=$(cat "${task}")
    fi
    if [[ "${args}" =~ ^#! ]]; then
      echo "ERROR: ${task} looks like a script but is not executable" 1>&2
      read -r -n 1 -p "Fix it? " fix_it
      if [[ "${fix_it}" == "y" ]]; then
        chmod 755 "${task}"
        echo "Fixed. Running it now."
        "./${task}"
        continue
      fi
    fi
    case $(uname) in
    Linux)
      echo "${args}" | xargs -n 1 xdg-open
      ;;
    Darwin)
      echo "${args}" | xargs open
      ;;
    esac
    sleep 1
  done
}

main "$@"