dwm-status.c

   1 /*-
   2  * "THE BEER-WARE LICENSE" (Revision 42):
   3  * <tobias.rehbein@web.de> wrote this file. As long as you retain this notice
   4  * you can do whatever you want with this stuff. If we meet some day, and you
   5  * think this stuff is worth it, you can buy me a beer in return.
   6  *                                                              Tobias Rehbein
   7  */
   8
   9 #define _POSIX_C_SOURCE 199506
  10
  11 #include <err.h>
  12 #include <locale.h>
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <sysexits.h>
  16 #include <unistd.h>
  17
  18 #include <X11/Xlib.h>
  19
  20 #include "battery.h"
  21 #include "buffers.h"
  22 #include "clock.h"
  23 #include "load.h"
  24 #include "mpd.h"
  25 #include "tools.h"
  26
  27 enum {
  28         SLEEP = 1,
  29 };
  30
  31 int
  32 main(void)
  33 {
  34         Display        *dpy;
  35         Window          root;
  36         struct clock_context *clock_ctx;
  37         struct battery_context *battery_ctx;
  38         struct load_context *load_ctx;
  39         struct mpd_context *mpd_ctx;
  40         int             screen;
  41
  42         if (setlocale(LC_ALL, "") == NULL)
  43                 errx(EX_SOFTWARE, "setlocale()");
  44
  45         if ((dpy = XOpenDisplay(NULL)) == NULL)
  46                 errx(EX_SOFTWARE, "unable to open display '%s'", XDisplayName(NULL));
  47         screen = DefaultScreen(dpy);
  48         root = RootWindow(dpy, screen);
  49
  50
  51         if ((clock_ctx = clock_context_open()) == NULL)
  52                 errx(EX_SOFTWARE, "clock_context_open()");
  53         if ((battery_ctx = battery_context_open()) == NULL)
  54                 errx(EX_SOFTWARE, "battery_context_open()");
  55         if ((load_ctx = load_context_open()) == NULL)
  56                 errx(EX_SOFTWARE, "load_context_open()");
  57         if ((mpd_ctx = mpd_context_open()) == NULL)
  58                 errx(EX_SOFTWARE, "mpd_context_open()");
  59
  60         for (;;) {
  61                 char            status[STATUS_BUFFLEN];
  62                 char           *clock;
  63                 char           *battery;
  64                 char           *load;
  65                 char           *mpd;
  66
  67                 if ((clock = clock_str(clock_ctx)) == NULL)
  68                         err(EX_SOFTWARE, "clock_str");
  69                 if ((battery = battery_str(battery_ctx)) == NULL)
  70                         err(EX_SOFTWARE, "clock_str");
  71                 if ((load = load_str(load_ctx)) == NULL)
  72                         err(EX_SOFTWARE, "load_str");
  73                 if ((mpd = mpd_str(mpd_ctx)) == NULL)
  74                         err(EX_SOFTWARE, "mpd_str");
  75
  76                 tools_catitems(status, sizeof(status), mpd, " | ", load, " | ", battery, " | ", clock, NULL);
  77                 XStoreName(dpy, root, status);
  78                 XFlush(dpy);
  79
  80                 sleep(SLEEP);
  81         }
  82
  83         /*
  84          * This code will never be reached (at least at the moment).
  85          * Nonetheless I regard it good style to implement cleanup code.
  86          */
  87         mpd_context_close(mpd_ctx);
  88         load_context_close(load_ctx);
  89         battery_context_close(battery_ctx);
  90         clock_context_close(clock_ctx);
  91         XCloseDisplay(dpy);
  92
  93         return (0);
  94 }