event_loader

#!/usr/bin/env sh

EVENT_HANDLER="$(dirname "$0")/event_handler"

# Load the default (empty) event implementations
. "$EVENT_HANDLER"

PFS=$IFS

load_events() {
    IFS=$PFS
    for f in $event_files; do
        if . "$f"; then
            printf >&2 'loaded event file: %s\n' "$f"
        else
            printf >&2 'failed sourcing event file: %s\n' "$f"
            exit 2
        fi
    done
}

verbose=
case "$1" in
    -v) verbose=1 && shift ;;
esac

event_files="$*"
load_events

trap 'load_events; continue' USR1

while true; do
    if read -r event_data; then
        event="${event_data%%>>*}"
        edata="${event_data#"$event">>}"

        IFS=','
        set -- "$edata"
        IFS=$PFS

        if [ -n "$verbose" ]; then
            printf >&2 '[%s] 1:%s 2:%s 3:%s 4:%s\n' "$event" "$1" "$2" "$3" "$4"
        fi

        case "$event" in
            "activelayout") KEYBOARDNAME="$1" LAYOUTNAME="$2" event_activelayout ;;
            "activewindow") WINDOWCLASS="$1" WINDOWTITLE="$2" event_activewindow ;;
            "activewindowv2") WINDOWADDRESS="$1" event_activewindowv2 ;;
            "closelayer") NAMESPACE="$1" event_closelayer ;;
            "closewindow") WINDOWADDRESS="$1" event_closewindow ;;
            "createworkspace") WORKSPACENAME="$1" event_createworkspace ;;
            "destroyworkspace") WORKSPACENAME="$1" event_destroyworkspace ;;
            "focusedmon") MONNAME="$1" WORKSPACENAME="$2" event_focusedmon ;;
            "fullscreen") ENTER="$1" event_fullscreen ;;
            "monitoradded") MONITORNAME="$1" event_monitoradded ;;
            "monitorremoved") MONITORNAME="$1" event_monitorremoved ;;
            "movewindow") WINDOWADDRESS="$1" WORKSPACENAME="$2" event_movewindow ;;
            "moveworkspace") WORKSPACENAME="$1" MONNAME="$2" event_moveworkspace ;;
            "openlayer") NAMESPACE="$1" event_openlayer ;;
            "openwindow") WINDOWADDRESS="$1" WORKSPACENAME="$2" WINDOWCLASS="$3" WINDOWTITLE="$4" event_openwindow ;;
            "screencast") STATE="$1" OWNER="$2" event_screencast ;;
            "submap") SUBMAPNAME="$1" event_submap ;;
            "windowtitle") WINDOWADDRESS="$1" event_windowtitle ;;
            "workspace") WORKSPACENAME="$1" event_workspace ;;
            *) printf >&2 'Unknown event: %s\n' "$event" ;;
        esac
    fi
done