WPrefs.app/main.c

   1 /*
   2  *  WPrefs - Window Maker Preferences Program
   3  *
   4  *  Copyright (c) 1998 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
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19  *  USA.
  20  */
  21
  22 #include "WPrefs.h"
  23
  24
  25 #include <assert.h>
  26
  27 #include <X11/Xlocale.h>
  28
  29 #include <sys/wait.h>
  30 #include <unistd.h>
  31
  32 extern void Initialize(WMScreen *scr);
  33
  34 #define MAX_DEATHS      64
  35
  36 struct {
  37     pid_t pid;
  38     void *data;
  39     void (*handler)(void*);
  40 } DeadHandlers[MAX_DEATHS];
  41
  42
  43 static pid_t DeadChildren[MAX_DEATHS];
  44 static int DeadChildrenCount = 0;
  45
  46
  47 void
  48 wAbort(Bool foo)
  49 {
  50     exit(1);
  51 }
  52
  53
  54 static BOOL
  55 stringCompareHook(proplist_t pl1, proplist_t pl2)
  56 {
  57     char *str1, *str2;
  58
  59     str1 = PLGetString(pl1);
  60     str2 = PLGetString(pl2);
  61
  62     if (strcasecmp(str1, str2)==0)
  63       return YES;
  64     else
  65       return NO;
  66 }
  67
  68
  69 static void
  70 print_help(char *progname)
  71 {
  72     printf(_("usage: %s [options]\n"), progname);
  73     puts(_("options:"));
  74     puts(_(" -display <display> display to be used"));
  75     puts(_(" -version           print version number and exit"));
  76 }
  77
  78
  79
  80 static RETSIGTYPE
  81 handleDeadChild(int sig)
  82 {
  83     pid_t pid;
  84     int status;
  85
  86     pid = waitpid(-1, &status, WNOHANG);
  87     if (pid > 0) {
  88         DeadChildren[DeadChildrenCount++] = pid;
  89     }
  90 }
  91
  92
  93 void
  94 AddDeadChildHandler(pid_t pid, void (*handler)(void*), void *data)
  95 {
  96     int i;
  97
  98     for (i = 0; i < MAX_DEATHS; i++) {
  99         if (DeadHandlers[i].pid == 0) {
 100             DeadHandlers[i].pid = pid;
 101             DeadHandlers[i].handler = handler;
 102             DeadHandlers[i].data = data;
 103             break;
 104         }
 105     }
 106     assert(i!=MAX_DEATHS);
 107 }
 108
 109
 110
 111 int
 112 main(int argc, char **argv)
 113 {
 114     Display *dpy;
 115     WMScreen *scr;
 116     char *locale;
 117     int i;
 118     char *display_name="";
 119
 120     memset(DeadHandlers, 0, sizeof(DeadHandlers));
 121
 122     WMInitializeApplication("WPrefs", &argc, argv);
 123
 124     if (argc>1) {
 125         for (i=1; i<argc; i++) {
 126             if (strcmp(argv[i], "-version")==0) {
 127                 printf("WPrefs %s\n", WVERSION);
 128                 exit(0);
 129             } else if (strcmp(argv[i], "-display")==0) {
 130                 i++;
 131                 if (i>=argc) {
 132                     wwarning(_("too few arguments for %s"), argv[i-1]);
 133                     exit(0);
 134                 }
 135                 display_name = argv[i];
 136             } else {
 137                 print_help(argv[0]);
 138                 exit(0);
 139             }
 140         }
 141     }
 142
 143     locale = getenv("LANG");
 144     setlocale(LC_ALL, "");
 145
 146 #ifdef I18N
 147     if (getenv("NLSPATH"))
 148         bindtextdomain("WPrefs", getenv("NLSPATH"));
 149     else
 150         bindtextdomain("WPrefs", NLSDIR);
 151     textdomain("WPrefs");
 152
 153     if (!XSupportsLocale()) {
 154         wwarning(_("X server does not support locale"));
 155     }
 156     if (XSetLocaleModifiers("") == NULL) {
 157         wwarning(_("cannot set locale modifiers"));
 158     }
 159 #endif
 160
 161     dpy = XOpenDisplay(display_name);
 162     if (!dpy) {
 163         wfatal(_("could not open display %s"), XDisplayName(display_name));
 164         exit(0);
 165     }
 166 #if 0
 167     XSynchronize(dpy, 1);
 168 #endif
 169     scr = WMCreateScreen(dpy, DefaultScreen(dpy));
 170     if (!scr) {
 171         wfatal(_("could not initialize application"));
 172         exit(0);
 173     }
 174
 175     PLSetStringCmpHook(stringCompareHook);
 176
 177     Initialize(scr);
 178
 179     while (1) {
 180         XEvent event;
 181
 182         WMNextEvent(dpy, &event);
 183
 184         while (DeadChildrenCount-- > 0) {
 185             int i;
 186
 187             for (i=0; i<MAX_DEATHS; i++) {
 188                 if (DeadChildren[i] == DeadHandlers[i].pid) {
 189                     (*DeadHandlers[i].handler)(DeadHandlers[i].data);
 190                     DeadHandlers[i].pid = 0;
 191                 }
 192             }
 193         }
 194
 195         WMHandleEvent(&event);
 196     }
 197 }