kick/scripts/nested-labwc.sh

#!/bin/sh
# Throwaway dev wrapper: run a command inside a nested labwc (wlroots-family
# host) so the clipboard bridge uses the ext-data-control backend.
# Usage: nested-labwc.sh [--x11] <command...>
# Default command: kick with two wltest tabs.
set -e

REPO="${KICK_REPO:-/home/ahamilton/code/kick}"
RUNTIME="${XDG_RUNTIME_DIR:-/run/user/$(id -u)}"
export WAYLAND_DISPLAY="${WAYLAND_DISPLAY:-wayland-0}"
export WLR_WL_OUTPUTS="${WLR_WL_OUTPUTS:-1}"

MODE=wayland
if [ "$1" = "--x11" ]; then
    MODE=x11
    shift
fi

if [ "$MODE" = x11 ]; then
    export WLR_BACKENDS=x11
    export DISPLAY="${DISPLAY:-:0}"
    echo "[nested-labwc] x11 backend on $DISPLAY"
else
    export WLR_BACKENDS=wayland
    echo "[nested-labwc] wayland backend under $WAYLAND_DISPLAY"
fi

before="$(ls "$RUNTIME"/wayland-* 2>/dev/null || true)"

labwc -t "labwc-dev" >/tmp/labwc.log 2>&1 &
LABWC_PID=$!
trap 'kill "$LABWC_PID" 2>/dev/null || true' EXIT INT TERM

# Discover labwc's socket: the wayland-N that wasn't there before. Only match
# plain wayland-<n> sockets (labwc's name); portal/other compositors create
# wayland-proxy-* sockets at arbitrary times and must be ignored.
SOCK=""
for i in $(seq 1 150); do
    for s in "$RUNTIME"/wayland-*; do
        [ -e "$s" ] || continue
        b="${s##*/}"
        case "$b" in *.lock|*proxy*) continue ;;
        wayland-[0-9]*) case "$before" in *"$s"*) ;; *) SOCK="$b"; break 2 ;; esac ;;
    esac
    done
    if ! kill -0 "$LABWC_PID" 2>/dev/null; then
        echo "[nested-labwc] labwc exited early; tail:" >&2
        tail -20 /tmp/labwc.log >&2
        exit 1
    fi
    sleep 0.1
done

if [ -z "$SOCK" ]; then
    echo "[nested-labwc] no new wayland socket appeared" >&2
    tail -20 /tmp/labwc.log >&2
    exit 1
fi

echo "[nested-labwc] nested labwc socket: $SOCK"
export WAYLAND_DISPLAY="$SOCK"

if [ "$#" -eq 0 ]; then
    set -- "$REPO/build/kick" \
        "$REPO/build/wltest '#ff0000'" \
        "$REPO/build/wltest '#0000ff'"
fi

"$@"
rc=$?
kill "$LABWC_PID" 2>/dev/null || true
exit "$rc"