nwn/libnwn.sh

   1 nwn.run() {
   2   local -r APP_NAME="nwn"
   3   local -r TMPDIR="${TMPDIR:-/tmp}"
   4   local RW_BRANCH="${RW_BRANCH:-${XDG_DATA_HOME}/${APP_NAME}}"
   5   local -r APP_DIR="${TMPDIR}/${APP_NAME}-tmp-${USER}"
   6   local -r CONF_DIR="/etc/${APP_NAME}"
   7   local -r BRANCHES_D="/etc/${APP_NAME}/branches.d"
   8   local __firstRun=false
   9
  10   if [ ! -d "${RW_BRANCH}" ]; then
  11     __firstRun=true
  12   fi
  13
  14   mkdir -p "${RW_BRANCH}" "${APP_DIR}" &&
  15   { findmnt "${APP_DIR}" || RW_BRANCH="${RW_BRANCH}" modfs -o cow -o "uid=${UID}" -o "gid=${GROUPS[0]}" "${BRANCHES_D}" "${APP_DIR}"; } &&
  16   cd "${APP_DIR}" &&
  17   "$@"
  18
  19   cd / &&
  20   fusermount -u "${APP_DIR}" &&
  21   rmdir "${APP_DIR}"
  22 }
  23
  24 nwn.exec() {
  25   local -r EXEC_NAME=$(basename "${1}")
  26   local -r EXEC_D="${CONF_DIR}/hooks.d"
  27   local -r EXEC_PREFIX="nwn.hooks.${EXEC_NAME}."
  28   if [ -d "${EXEC_D}" ]; then
  29     local f
  30     for f in "${EXEC_D}/"*.sh; do
  31       [ -f "${f}" ] && source "${f}"
  32     done
  33   fi
  34   local -a commandLine=($(compgen -A function "${EXEC_PREFIX}") "${@}")
  35   "${commandLine[@]}"
  36 }
  37
  38 nwn.firstRun() {
  39   "${__firstRun}"
  40 }