lsw.c

/* See LICENSE file for copyright and license details. */

#include <stdio.h>
#include <stdlib.h>
#include <err.h>
#include <xcb/xcb.h>
#include <xcb/xcb_aux.h>

#include "arg.h"
#include "util.h"

static xcb_connection_t *conn;
static xcb_screen_t *scrn;

static void usage(char *);
static int should_list(xcb_window_t, int);
static void list_windows(xcb_window_t, int);

enum {
	LIST_HIDDEN = 1 << 0,
	LIST_IGNORE = 1 << 1,
	LIST_ALL    = 1 << 2
};

static void
usage(char *name)
{
	fprintf(stderr, "usage: %s [-houra] [wid...]\n", name);
	exit(1);
}

static int
should_list(xcb_window_t w, int mask)
{
	if ((mask & LIST_ALL)
		|| (!mapped(conn, w) && mask & LIST_HIDDEN)
		|| (ignore(conn, w) && mask & LIST_IGNORE)
		|| (mapped(conn, w)
			&& !ignore(conn, w)
			&& mask == 0))
		return 1;

	return 0;
}

static void
list_windows(xcb_window_t w, int listmask)
{
	int i, wn;
	xcb_window_t *wc;

	wn = get_windows(conn, w, &wc);

	if (wc == NULL)
		errx(1, "0x%08x: unable to retrieve children", w);

	for (i=0; i<wn; i++) {
		if (should_list(wc[i], listmask))
			printf("0x%08x\n", wc[i]);
	}

	free(wc);
}

int
main(int argc, char **argv)
{
	int listmask = 0, rootflag = 0;
	char *argv0;

	ARGBEGIN {
		case 'a': listmask |= LIST_ALL; break;
		case 'u': listmask |= LIST_HIDDEN; break;
		case 'o': listmask |= LIST_IGNORE; break;
		case 'r': rootflag = 1; break;
		default : usage(argv0);
	} ARGEND;

	init_xcb(&conn);
	get_screen(conn, &scrn);

	if (rootflag == 1) {
		printf("0x%08x\n", scrn->root);
		return 0;
	}

	if (argc == 0)
		list_windows(scrn->root, listmask);

	while (*argv)
		list_windows(strtoul(*argv++, NULL, 16), listmask);

	kill_xcb(&conn);

	return 0;
}