From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / driver / xscreensaver-command.c

diff --git a/driver/xscreensaver-command.c b/driver/xscreensaver-command.c
index 6c039fb27d1c0173bdc2c91f40a4d1af5d6a9653..6adf1fdd5e852ca6a9b9987842b88593b34ac987 100644 (file)
--- a/driver/xscreensaver-command.c
+++ b/driver/xscreensaver-command.c
@@ -1,4 +1,4 @@
-/* xscreensaver-command, Copyright (c) 1991-2004 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver-command, Copyright (c) 1991-2013 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -23,7 +23,7 @@
 # include <unistd.h>
 #endif
 
-#include <X11/Xproto.h>                /* for CARD32 */
+/* #include <X11/Xproto.h>     / * for CARD32 */
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>         /* for XGetClassHint() */
@@ -31,6 +31,14 @@
 
 #include <X11/Intrinsic.h>     /* only needed to get through xscreensaver.h */
 
+
+/* You might think that to read an array of 32-bit quantities out of a
+   server-side property, you would pass an array of 32-bit data quantities
+   into XGetWindowProperty().  You would be wrong.  You have to use an array
+   of longs, even if long is 64 bits (using 32 of each 64.)
+ */
+typedef long PROP32;
+
 #include "remote.h"
 #include "version.h"
 
@@ -57,7 +65,7 @@ static char *usage = "\n\
 usage: %s -<option>\n\
 \n\
   This program provides external control of a running xscreensaver process.\n\
-  Version %s, copyright (c) 1991-2005 Jamie Zawinski <jwz@jwz.org>.\n\
+  Version %s, copyright (c) 1991-%s Jamie Zawinski <jwz@jwz.org>.\n\
 \n\
   The xscreensaver program is a daemon that runs in the background.\n\
   You control a running xscreensaver process by sending it messages\n\
@@ -100,9 +108,9 @@ usage: %s -<option>\n\
                 (Note that one must *never* kill xscreensaver with -9!)\n\
 \n\
   -restart      Causes the screensaver process to exit and then restart with\n\
-                the same command line arguments as last time.  Do this after\n\
-                you've changed your X resource settings, to cause\n\
-                xscreensaver to notice the changes.\n\
+                the same command line arguments as last time.  You shouldn't\n\
+                really need to do this, since xscreensaver notices when the\n\
+                .xscreensaver file has changed and re-reads it as needed.\n\
 \n\
   -lock         Tells the running xscreensaver process to lock the screen\n\
                 immediately.  This is like -activate, but forces locking as\n\
@@ -126,7 +134,7 @@ usage: %s -<option>\n\
                 some way.\n\
 \n\
   See the man page for more details.\n\
-  For updates, check http://www.jwz.org/xscreensaver/\n\
+  For updates, check https://www.jwz.org/xscreensaver/\n\
 \n";
 
 /* Note: The "-throttle" command is deprecated -- it predates the XDPMS
@@ -137,7 +145,7 @@ usage: %s -<option>\n\
  */
 
 #define USAGE() do { \
- fprintf (stderr, usage, progname, screensaver_version); exit (1); \
+ fprintf (stderr, usage, progname, screensaver_version, year); exit (1); \
  } while(0)
 
 static int watch (Display *);
@@ -152,6 +160,7 @@ main (int argc, char **argv)
   long arg = 0L;
   char *s;
   Atom XA_WATCH = 0;  /* kludge: not really an atom */
+  char year[5];
 
   progname = argv[0];
   s = strrchr (progname, '/');
@@ -161,6 +170,12 @@ main (int argc, char **argv)
   memcpy (screensaver_version, screensaver_id + 17, 4);
   screensaver_version [4] = 0;
 
+  s = strchr (screensaver_id, '-');
+  s = strrchr (s, '-');
+  s++;
+  strncpy (year, s, 4);
+  year[4] = 0;
+
   for (i = 1; i < argc; i++)
     {
       const char *s = argv [i];
@@ -309,8 +324,12 @@ main (int argc, char **argv)
   if (*cmd == XA_ACTIVATE || *cmd == XA_LOCK ||
       *cmd == XA_NEXT || *cmd == XA_PREV || *cmd == XA_SELECT)
     /* People never guess that KeyRelease deactivates the screen saver too,
-       so if we're issuing an activation command, wait a second. */
-    sleep (1);
+       so if we're issuing an activation command, wait a second.
+       No need to do this if stdin is not a tty, meaning we're not being
+       run from the command line.
+     */
+    if (isatty(0))
+      sleep (1);
 
   i = xscreensaver_command (dpy, *cmd, arg, True, NULL);
   if (i < 0) exit (i);
@@ -325,7 +344,7 @@ watch (Display *dpy)
   Window window = RootWindow (dpy, 0);
   XWindowAttributes xgwa;
   XEvent event;
-  CARD32 *last = 0;
+  PROP32 *last = 0;
 
   if (v) free (v);
   XGetWindowAttributes (dpy, window, &xgwa);
@@ -357,7 +376,7 @@ watch (Display *dpy)
               char *s;
               Bool changed = False;
               Bool running = False;
-              CARD32 *data = (CARD32 *) dataP;
+              PROP32 *data = (PROP32 *) dataP;
 
               if (type != XA_INTEGER || nitems < 3)
                 {