mdw@git.distorted.org.uk Git - xtoys/blob - xtell.c

   1 /* -*-c-*-
   2  *
   3  * $Id: xtell.c,v 1.1 1998/11/16 23:00:49 mdw Exp $
   4  *
   5  * Wake up a waiting xwait process
   6  *
   7  * (c) 1998 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of the Edgeware X tools collection.
  13  *
  14  * X tools is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * X tools is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with X tools; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: xtell.c,v $
  32  * Revision 1.1  1998/11/16 23:00:49  mdw
  33  * Initial versions.
  34  *
  35  */
  36
  37 /*----- Header files ------------------------------------------------------*/
  38
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42
  43 #include <unistd.h>
  44
  45 #include <X11/Xlib.h>
  46 #include <X11/Xutil.h>
  47
  48 #include "xwait.h"
  49
  50 /*----- Main code ---------------------------------------------------------*/
  51
  52 int main(int argc, char *argv[])
  53 {
  54   char *display = 0;
  55   Display *dpy;
  56   Atom xwait_die;
  57   char *atom = XWAIT_DIE;
  58   char *msg = XWAIT_DIE_MSG;
  59
  60   /* --- Parse options --- */
  61
  62   for (;;) {
  63     int i = getopt(argc, argv, "d:a:m:");
  64     if (i < 0)
  65       break;
  66     switch (i) {
  67       case 'd':
  68         display = optarg;
  69         break;
  70       case 'a':
  71         atom = optarg;
  72         break;
  73       case 'm':
  74         msg = optarg;
  75         break;
  76       default:
  77         fprintf(stderr, "Usage: xtell [-d DISPLAY] [-a ATOM] [-m MSG]\n");
  78         exit(EXIT_FAILURE);
  79         break;
  80     }
  81   }
  82
  83   /* --- Connect to the display --- */
  84
  85   dpy = XOpenDisplay(display);
  86   if (!dpy) {
  87     fprintf(stderr, "xtell: couldn't open display\n");
  88     exit(EXIT_FAILURE);
  89   }
  90
  91   /* --- Find the right atom --- */
  92
  93   xwait_die = XInternAtom(dpy, atom, False);
  94
  95   /* --- Set the property value --- */
  96
  97   {
  98     XTextProperty prop;
  99     if (!XGetTextProperty(dpy, DefaultRootWindow(dpy), &prop, xwait_die)) {
 100       fprintf(stderr, "xtell: no xwait listening for `%s'\n", atom);
 101       exit(EXIT_FAILURE);
 102     }
 103     XStringListToTextProperty(&msg, 1, &prop);
 104     XSetTextProperty(dpy, DefaultRootWindow(dpy), &prop, xwait_die);
 105   }
 106
 107   /* --- Done --- */
 108
 109   XCloseDisplay(dpy);
 110   return (0);
 111 }
 112
 113 /*----- That's all, folks -------------------------------------------------*/