153 lines
3.1 KiB
Bash
Executable File
153 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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# Uncomment the following line to get debug info
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#set -x
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SELF="$(basename ${0})"
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LAUNCHER_FILE="$HOME/Launchers/launcher.txt"
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FRONTEND_FILE="$HOME/.frontend"
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PREVENT_LAUNCHER_FILE="/mnt/prevent_launcher"
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DISABLE_FRONTEND_FILE="/mnt/disable_frontend"
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DEFAULT_FRONTEND=retrofe
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LOCK_FILE="/var/lock/frontend.lock"
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REBOOTING_FILE="/run/rebooting"
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# Convert old launcher file to new frontend
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if [ -f "${LAUNCHER_FILE}" ]; then
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mv "${LAUNCHER_FILE}" "${FRONTEND_FILE}"
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rm -rf $(dirname "${LAUNCHER_FILE}") 2>/dev/null
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fi
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# Convert old prevent launcher file to new frontend disable file
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if [ -f "${PREVENT_LAUNCHER_FILE}" ]; then
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mv "${PREVENT_LAUNCHER_FILE}" "{DISABLE_FRONTEND_FILE}"
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fi
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usage() {
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>&2 echo "Usage: ${SELF} init"
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>&2 echo " ${SELF} get"
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>&2 echo " ${SELF} set gmenu2x|retrofe|none"
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exit 1
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}
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set_frontend() {
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mkdir -p "$(dirname "$FRONTEND_FILE")"
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local frontend=$(get_frontend)
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local new_frontend="${1}"
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echo "Setting frontend: ${new_frontend}"
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if [ "${new_frontend}" = "none" ]; then
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touch "${DISABLE_FRONTEND_FILE}"
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else
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rm -f "${DISABLE_FRONTEND_FILE}"
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fi
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if [ "${frontend}" != "none" ]; then
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pkill "${frontend}"
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fi
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echo "${new_frontend}" > "${FRONTEND_FILE}"
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}
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get_frontend() {
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local frontend=$(cat "${FRONTEND_FILE}" 2>/dev/null | head -1)
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# Check if not empty
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if [ "x${frontend}" = "x" ]; then
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frontend="${DEFAULT_FRONTEND}"
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echo "${frontend}" > "${FRONTEND_FILE}"
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fi
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# Return frontend name
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echo "${frontend}"
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}
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init_frontend() {
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if [ -f "${LOCK_FILE}" ]; then
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>&2 echo "${LOCK_FILE} already exists"
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exit 1
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fi
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touch "${LOCK_FILE}"
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# Then loop to launch the frontend indefinitely
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while true; do
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# Check if frontend disable file is present
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if [ -f "${DISBALE_FRONTEND_FILE}" ]; then
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echo "${DISABLE_FRONTEND_FILE} file found, not starting frontend"
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sleep 5
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else
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local frontend="$(get_frontend)"
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case "${frontend}" in
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gmenu2x|retrofe)
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"${frontend}"&
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;;
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none)
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echo "no frontend"
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sleep 5
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;;
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*)
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DEFAULT_FRONTEND=retrofe
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echo "Unrecognized frontend: $frontend, setting $DEFAULT_FRONTEND"
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set_frontend "${DEFAULT_FRONTEND}"
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;;
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esac
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# Record the PID into a file, wait for the process to
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# terminate and erase the recorded PID
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pid record $!
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wait $!
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pid erase
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# In case retrofe/opkrun quits with errors, clear graphic VT
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termfix_all
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# In case retrofe/opkrun quits with errors, reset default key mapping
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keymap default
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fi
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# Prevent 100% CPU usage
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sleep 0.5
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# Exit if console rebooting
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if [ -f "${REBOOTING_FILE}" ]; then
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break
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fi
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done
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# Remove lock file and exit
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rm "${LOCK_FILE}"
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}
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# Check number of arguments
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if [ ${#} -lt 1 -o ${#} -gt 2 ]; then
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usage
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fi
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case "${1}" in
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set)
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if [ ${#} -ne 2 ]; then
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usage
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fi
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set_frontend "${2}"
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;;
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get)
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if [ ${#} -ne 1 ]; then
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usage
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fi
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get_frontend
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;;
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init)
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if [ ${#} -ne 1 ]; then
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usage
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fi
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init_frontend
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;;
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*)
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usage
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;;
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esac
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exit 0
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