dokku/plugins/shell/commands

#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x

case "$1" in
  shell)
    INPUTRC="$PLUGIN_ROOT/inputrc"
    HISTFILE=~/.dokku_history

    history -r || true

    trim()
    {
      sed -e 's/^[[:space:]]*//g' -e 's/[[:space:]]*$//g'
    }

    trap 'history -w' EXIT

    while true; do
      trap '' SIGINT
      read -ep "dokku> " line || {
        echo; true; break
      }
      trap - SIGINT

      line=$(echo $line | trim)
      CMD=$(echo $line | awk '{ print $1 }')

      [[ -z $CMD ]] && continue

      [[ "$line" != "$(fc -ln -1 | trim)" ]] && history -s "$line"

      case $CMD in
        # shell builtins
        clear)
          clear
          ;;

        quit|exit)
          break
          ;;

        # Not a built-in, run as regular dokku command
        *)
          dokku $line || true
      esac

    done
    ;;

  help | shell:help)
    cat<<EOF
    shell, Spawn dokku shell
EOF
    ;;

  *)
    exit $DOKKU_NOT_IMPLEMENTED_EXIT
    ;;

esac