config.mk: Add LIBDIR

Signed-off-by: Christoph Lohmann <20h@r-36.net>

LICENSE

@@ -1,7 +1,7 @@
 MIT/X Consortium License
 
 © 2008 Kai Hendry <hendry@webconverger.com>
-© 2012 Christoph Lohmann <20h@r-36.net> 
+© 2012-2016 Christoph Lohmann <20h@r-36.net> 
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),

Makefile

@@ -30,7 +30,7 @@ clean:
 dist: clean
 	@echo creating dist tarball
 	@mkdir -p xssstate-${VERSION}
-	@cp -R LICENSE Makefile config.mk \
+	@cp -R LICENSE README Makefile config.mk xsidle.sh \
 		xssstate.1 arg.h ${SRC} xssstate-${VERSION}
 	@tar -cf xssstate-${VERSION}.tar xssstate-${VERSION}
 	@gzip xssstate-${VERSION}.tar

README

@@ -0,0 +1,34 @@
+Xssstate
+========
+This  is  a  simple utility to get the state of the X screensaver exten‐
+sion.  These states include the idle time, the screensaver state and the
+time how long to wait until the screensaver should be active.
+
+The values for the states in X can be changed using xset(1).
+
+Turn off the screensaver:
+
+	% xset s 0
+
+Turn on the screensaver after 60 seconds inactivity:
+
+	% xset s 60
+
+Force the screensaver to be active:
+
+	% xset s blank
+
+For more options, see xset(1).
+
+
+Example script
+--------------
+In  xsidle.sh is an example script how to use this for a background ser‐
+vice that will control your screensaver. This  can  be  used  to  invoke
+slock(1) using following command:
+
+	% xsidle.sh slock &
+
+This should be useful in your $HOME/.xinitrc file.
+
+Have fun! 

arg.h

@@ -3,53 +3,46 @@
  * by 20h
  */
 
-#ifndef __ARG_H__
-#define __ARG_H__
+#ifndef ARG_H__
+#define ARG_H__
 
 extern char *argv0;
 
-#define USED(x)		((void)(x))
-
 /* use main(int argc, char *argv[]) */
 #define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
-					argv[0] && argv[0][1]\
-					&& argv[0][0] == '-';\
+					argv[0] && argv[0][0] == '-'\
+					&& argv[0][1];\
 					argc--, argv++) {\
-				char _argc;\
-				char **_argv;\
-				int brk;\
+				char argc_;\
+				char **argv_;\
+				int brk_;\
 				if (argv[0][1] == '-' && argv[0][2] == '\0') {\
 					argv++;\
 					argc--;\
 					break;\
 				}\
-				for (brk = 0, argv[0]++, _argv = argv;\
-						argv[0][0] && !brk;\
+				for (brk_ = 0, argv[0]++, argv_ = argv;\
+						argv[0][0] && !brk_;\
 						argv[0]++) {\
-					if (_argv != argv)\
+					if (argv_ != argv)\
 						break;\
-					_argc = argv[0][0];\
-					switch (_argc)
-
+					argc_ = argv[0][0];\
+					switch (argc_)
 #define ARGEND			}\
-				USED(_argc);\
-			}\
-			USED(argv);\
-			USED(argc);
+			}
 
-#define ARGC()		_argc
+#define ARGC()		argc_
 
 #define EARGF(x)	((argv[0][1] == '\0' && argv[1] == NULL)?\
 				((x), abort(), (char *)0) :\
-				(brk = 1, (argv[0][1] != '\0')?\
+				(brk_ = 1, (argv[0][1] != '\0')?\
 					(&argv[0][1]) :\
 					(argc--, argv++, argv[0])))
 
 #define ARGF()		((argv[0][1] == '\0' && argv[1] == NULL)?\
 				(char *)0 :\
-				(brk = 1, (argv[0][1] != '\0')?\
+				(brk_ = 1, (argv[0][1] != '\0')?\
 					(&argv[0][1]) :\
 					(argc--, argv++, argv[0])))
 
 #endif
-

config.mk

@@ -1,15 +1,16 @@
 # xssstate version
-VERSION = 1.0
+VERSION = 1.1
 
 # Customize below to fit your system
 
 # paths
 PREFIX = /usr/local
+LIBDIR = ${PREFIX}/lib
 MANPREFIX = ${PREFIX}/share/man
 
 # includes and libs
 INCS = -I. -I/usr/include
-LIBS = -L/usr/lib -lc -lX11 -lXss
+LIBS = -L${LIBDIR} -lc -lX11 -lXss
 
 # flags
 CPPFLAGS = -DVERSION=\"${VERSION}\"

xsidle.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+#
+# Use xset s $time to control the timeout when this will run.
+#
+
+if [ $# -lt 1 ];
+then
+	printf "usage: %s cmd\n" "$(basename $0)" 2>&1
+	exit 1
+fi
+cmd="$@"
+
+while true
+do
+	if [ $(xssstate -s) != "disabled" ];
+	then
+		tosleep=$(($(xssstate -t) / 1000))
+		if [ $tosleep -le 0 ];
+		then
+			$cmd
+		else
+			sleep $tosleep
+		fi
+	else
+		sleep 10
+	fi
+done
+

xssstate.1

@@ -0,0 +1,44 @@
+.TH XSSSTATE 1 xssstate\-VERSION
+.SH NAME
+xssstate \- display X screensaver state 
+.SH SYNOPSIS
+.B xssstate 
+.RB [ \-i ]
+.RB [ \-s ]
+.RB [ \-t ]
+.RB [ \-v ]
+.SH DESCRIPTION
+.B xssstate
+will display the state of the X screensaver extension. See below what can be
+gathered.
+.SH OPTIONS
+.TP
+.B \-i
+show the idle time of X11, in milliseconds.
+.TP
+.B \-s
+show the current state of the X screensaver. There is
+.B "on"
+for the screensaver being active at the moment,
+.B "off"
+for the screensaver being off and
+.B "disabled"
+for the screensaver being disabled.
+.TP
+.B \-t
+will show the time that needs to be waited until the screensaver should be
+activated, in milliseconds.
+.TP
+.B \-v
+show version information
+.SH AUTHORS
+See the LICENSE file for the authors.
+.SH LICENSE
+See the LICENSE file for the terms of redistribution.
+.SH SEE ALSO
+.BR slock (1)
+.BR xlock (1)
+.BR xss (1)
+.SH BUGS
+Please report them.
+

xssstate.c

@@ -0,0 +1,106 @@
+/*
+ * See LICENSE file for copyright and license details.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <libgen.h>
+#include <X11/extensions/scrnsaver.h>
+
+#include "arg.h"
+
+char *argv0;
+
+void
+die(const char *errstr, ...) {
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(EXIT_FAILURE);
+}
+
+void
+usage(void)
+{
+	die("usage: %s [-istv]\n", basename(argv0));
+}
+
+int
+main(int argc, char *argv[]) {
+	XScreenSaverInfo *info;
+	Display *dpy;
+	int base, errbase;
+	Bool showstate, showtill, showidle;
+
+	showstate = false;
+	showtill = false;
+	showidle = false;
+
+	ARGBEGIN {
+	case 'i':
+		showidle = true;
+		break;
+	case 's':
+		showstate = true;
+		break;
+	case 't':
+		showtill = true;
+		break;
+	case 'v':
+		die("xssstate-"VERSION", © 2008-2016 xssstate engineers"
+				", see LICENSE for details.\n");
+	default:
+		usage();
+	} ARGEND;
+
+	if (!showstate && !showtill && !showidle)
+		usage();
+
+	if (!(dpy = XOpenDisplay(0)))
+		die("Cannot open display.\n");
+
+	if (!XScreenSaverQueryExtension(dpy, &base, &errbase))
+		die("Screensaver extension not activated.\n");
+
+	info = XScreenSaverAllocInfo();
+	XScreenSaverQueryInfo(dpy, DefaultRootWindow(dpy), info);
+
+	if (showstate) {
+		switch(info->state) {
+		case ScreenSaverOn:
+			printf("on\n");
+			break;
+		case ScreenSaverOff:
+			printf("off\n");
+			break;
+		case ScreenSaverDisabled:
+			printf("disabled\n");
+			break;
+		}
+	} else if (showtill) {
+		switch(info->state) {
+		case ScreenSaverOn:
+			printf("0\n");
+			break;
+		case ScreenSaverOff:
+			printf("%lu\n", info->til_or_since);
+			break;
+		case ScreenSaverDisabled:
+			printf("-1\n");
+			break;
+		}
+	} else if (showidle) {
+		printf("%lu\n", info->idle);
+	}
+
+
+	XCloseDisplay(dpy);
+
+	return 0;
+}
+