WPrefs.app/main.c

   1 /*
   2  *  WPrefs - Window Maker Preferences Program
   3  *
   4  *  Copyright (c) 1998-2003 Alfredo K. Kojima
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include "WPrefs.h"
  24
  25 #include <assert.h>
  26
  27 #include <X11/Xlocale.h>
  28 #include <X11/XKBlib.h>
  29
  30 #include <sys/wait.h>
  31 #include <unistd.h>
  32
  33 #ifdef HAVE_STDNORETURN
  34 #include <stdnoreturn.h>
  35 #endif
  36
  37 char *NOptionValueChanged = "NOptionValueChanged";
  38
  39 #define MAX_DEATHS      64
  40
  41 struct {
  42         pid_t pid;
  43         void *data;
  44         void (*handler) (void *);
  45 } DeadHandlers[MAX_DEATHS];
  46
  47 static pid_t DeadChildren[MAX_DEATHS];
  48 static int DeadChildrenCount = 0;
  49
  50 static noreturn void wAbort(Bool foo)
  51 {
  52         /* Parameter not used, but tell the compiler that it is ok */
  53         (void) foo;
  54
  55         exit(1);
  56 }
  57
  58 static void print_help(const char *progname)
  59 {
  60         printf(_("usage: %s [options]\n"), progname);
  61         puts(_("options:"));
  62         puts(_(" -display <display>     display to be used"));
  63         puts(_(" --version              print version number and exit"));
  64         puts(_(" --help         print this message and exit"));
  65 }
  66
  67 void AddDeadChildHandler(pid_t pid, void (*handler) (void *), void *data)
  68 {
  69         int i;
  70
  71         for (i = 0; i < MAX_DEATHS; i++) {
  72                 if (DeadHandlers[i].pid == 0) {
  73                         DeadHandlers[i].pid = pid;
  74                         DeadHandlers[i].handler = handler;
  75                         DeadHandlers[i].data = data;
  76                         break;
  77                 }
  78         }
  79         assert(i != MAX_DEATHS);
  80 }
  81
  82 int main(int argc, char **argv)
  83 {
  84         Display *dpy;
  85         WMScreen *scr;
  86         char *path;
  87         int i;
  88         char *display_name = "";
  89
  90         wsetabort(wAbort);
  91
  92         memset(DeadHandlers, 0, sizeof(DeadHandlers));
  93
  94         WMInitializeApplication("WPrefs", &argc, argv);
  95
  96         WMSetResourcePath(RESOURCE_PATH);
  97         path = WMPathForResourceOfType("WPrefs.tiff", NULL);
  98         if (!path) {
  99                 /* maybe it is run directly from the source directory */
 100                 WMSetResourcePath(".");
 101                 path = WMPathForResourceOfType("WPrefs.tiff", NULL);
 102                 if (!path) {
 103                         WMSetResourcePath("..");
 104                 }
 105         }
 106         if (path) {
 107                 wfree(path);
 108         }
 109
 110         if (argc > 1) {
 111                 for (i = 1; i < argc; i++) {
 112                         if (strcmp(argv[i], "-version") == 0 || strcmp(argv[i], "--version") == 0) {
 113                                 printf("WPrefs (Window Maker) %s\n", VERSION);
 114                                 exit(0);
 115                         } else if (strcmp(argv[i], "-display") == 0) {
 116                                 i++;
 117                                 if (i >= argc) {
 118                                         wwarning(_("too few arguments for %s"), argv[i - 1]);
 119                                         exit(0);
 120                                 }
 121                                 display_name = argv[i];
 122                         } else {
 123                                 print_help(argv[0]);
 124                                 exit(0);
 125                         }
 126                 }
 127         }
 128
 129         setlocale(LC_ALL, "");
 130
 131 #ifdef I18N
 132         if (getenv("NLSPATH"))
 133                 bindtextdomain("WPrefs", getenv("NLSPATH"));
 134         else
 135                 bindtextdomain("WPrefs", LOCALEDIR);
 136         bind_textdomain_codeset("WPrefs", "UTF-8");
 137         textdomain("WPrefs");
 138
 139         if (!XSupportsLocale()) {
 140                 wwarning(_("X server does not support locale"));
 141         }
 142         if (XSetLocaleModifiers("") == NULL) {
 143                 wwarning(_("cannot set locale modifiers"));
 144         }
 145 #endif
 146
 147         dpy = XOpenDisplay(display_name);
 148         if (!dpy) {
 149                 wfatal(_("could not open display %s"), XDisplayName(display_name));
 150                 exit(0);
 151         }
 152         scr = WMCreateScreen(dpy, DefaultScreen(dpy));
 153         if (!scr) {
 154                 wfatal(_("could not initialize application"));
 155                 exit(0);
 156         }
 157
 158         WMPLSetCaseSensitive(False);
 159
 160         Initialize(scr);
 161
 162         while (1) {
 163                 XEvent event;
 164
 165                 WMNextEvent(dpy, &event);
 166
 167                 while (DeadChildrenCount-- > 0) {
 168                         int i;
 169
 170                         for (i = 0; i < MAX_DEATHS; i++) {
 171                                 if (DeadChildren[i] == DeadHandlers[i].pid) {
 172                                         (*DeadHandlers[i].handler) (DeadHandlers[i].data);
 173                                         DeadHandlers[i].pid = 0;
 174                                 }
 175                         }
 176                 }
 177
 178                 WMHandleEvent(&event);
 179         }
 180 }