.bash/def.shlib at master · noel-yap/.bash · GitHub

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function export-defs() {
  export ALIASES="$(alias)"
  export FUNCTIONS="$(declare -f)"
}

function import-defs() {
  eval "${ALIASES}"
  eval "${FUNCTIONS}"
}

function is-def() {
  flag=$1
  name=$2

  case "${flag}" in
    -a)
      alias "${name}" >/dev/null 2>/dev/null
      ;;

    -f)
      [[ "$(type -t ${name} 2>/dev/null)" == 'function' ]]
      ;;

    -v)
      [[ -n "${!name+defined}" ]]
      ;;
  esac
}

function get-set-def() {
  flag=$1
  name=$2

  local def
  case "${flag}" in
    -a)
      alias ${name}
      ;;

    -f)
      declare -f ${name}
      ;;

    -v)
      echo "${name}=${!name})"
      ;;
  esac
}

function get-unset-def() {
  flag=$1
  name=$2

  case "${flag}" in
    -a)
      echo "unalias ${name}"
      ;;

    -f)
      echo "unset -f ${name}"
      ;;

    -v)
      echo "unset ${name}"
      ;;
  esac
}

function get-reset-def() {
  flag=$1
  varname=$2

  if is-def ${flag} ${varname}
  then
    get-set-def ${flag} ${varname}
  else
    get-unset-def ${flag} ${varname}
  fi
}