added daemonization, output possibility to console (for other programs) and moved...

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index fa91cce..be124f3 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -26,6 +26,7 @@
 #undef strlcat
 #undef strlcpy
 
+#include "arg.h"
 #include "strlcat.h"
 #include "strlcpy.h"
 #include "concat.h"
@@ -40,6 +41,7 @@ struct arg {
 
 static char *smprintf(const char *, ...);
 static char *battery_perc(const char *);
+static char *battery_state(const char *);
 static char *cpu_perc(void);
 static char *datetime(const char *);
 static char *disk_free(const char *);
@@ -63,11 +65,13 @@ static char *username(void);
 static char *vol_perc(const char *);
 static char *wifi_perc(const char *);
 static char *wifi_essid(const char *);
+static void set_status(const char *);
 static void sighandler(const int);
+static void usage(void);
 
-static unsigned short int delay;
+char *argv0;
+static unsigned short int delay, done, dflag, oflag;
 static Display *dpy;
-static int done = 0;
 
 #include "config.h"
 
@@ -113,6 +117,31 @@ battery_perc(const char *battery)
        return smprintf("%d%%", perc);
 }
 
+static char *
+battery_state(const char *battery)
+{
+       char state[12]; 
+       FILE *fp;
+
+       ccat(3, "/sys/class/power_supply/", battery, "/status");
+       fp = fopen(concat, "r");
+       if (fp == NULL) {
+               warn("Error opening battery file: %s", concat);
+               return smprintf(UNKNOWN_STR);
+       }
+       fscanf(fp, "%12s", state);
+       fclose(fp);
+
+       if (strcmp(state, "Charging") == 0)
+               return smprintf("+");
+       else if (strcmp(state, "Discharging") == 0)
+               return smprintf("-");
+       else if (strcmp(state, "Full") == 0)
+               return smprintf("=");
+       else
+               return smprintf("?");
+}
+
 static char *
 cpu_perc(void)
 {
@@ -247,9 +276,7 @@ hostname(void)
        }
 
        fgets(hostname, sizeof(hostname), fp);
-       /* FIXME: needs improvement */
-       memset(&hostname[strlen(hostname)-1], '\0',
-               sizeof(hostname) - strlen(hostname));
+       hostname[strlen(hostname)-1] = '\0';
        fclose(fp);
 
        return smprintf("%s", hostname);
@@ -383,26 +410,18 @@ ram_used(void)
 static char *
 run_command(const char* command)
 {
-       int good;
        FILE *fp = popen(command, "r");
-       char buffer[64] = "";
+       char buffer[64] = "\0";
 
        if (fp == NULL) {
                warn("Could not get command output for: %s", command);
                return smprintf(UNKNOWN_STR);
        }
 
-       fgets(buffer, sizeof(buffer)-1, fp);
-       pclose(fp);
-       for (int i = 0 ; i != sizeof(buffer); i++) {
-               if (buffer[i] == '\0') {
-                       good = 1;
-                       break;
-               }
-       }
-       if (good)
-               buffer[strlen(buffer)-1] = '\0';
+       fgets(buffer, sizeof(buffer), fp);
+       buffer[sizeof(buffer)-1] = '\0';
 
+       pclose(fp);
        return smprintf("%s", buffer);
 }
 
@@ -477,7 +496,7 @@ vol_perc(const char *soundcard)
        if (elem == NULL) {
                snd_mixer_selem_id_free(s_elem);
                snd_mixer_close(handle);
-               warn("Failed to get volume percentage for: %s.", soundcard);
+               warn("Failed to get volume percentage for: %s", soundcard);
                return smprintf(UNKNOWN_STR);
        }
 
@@ -564,23 +583,57 @@ wifi_essid(const char *wificard)
                return smprintf("%s", (char *)wreq.u.essid.pointer);
 }
 
+static void
+set_status(const char *str)
+{
+       XStoreName(dpy, DefaultRootWindow(dpy), str);
+       XSync(dpy, False);
+}
+
 static void
 sighandler(const int signo)
 {
-       if (signo == SIGTERM || signo == SIGINT) {
+       if (signo == SIGTERM || signo == SIGINT)
                done = 1;
-       }
 }
 
+static void
+usage(void)
+{
+       fprintf(stderr,
+               "slstatus (c) 2016, drkhsh\n"
+               "usage: %s [-dho]\n",
+               argv0);
+       exit(1);
+}
+
+
+
 int
-main(void)
+main(int argc, char *argv[])
 {
-       size_t i;
+       unsigned short int i;
        char status_string[4096];
-       char *res, *element, *status_old;
+       char *res, *element;
        struct arg argument;
        struct sigaction act;
 
+       ARGBEGIN {
+               case 'd':
+                       dflag = 1;
+                       break;
+               case 'o':
+                       oflag = 1;
+                       break;
+               default:
+                       usage();
+       } ARGEND
+
+       if (dflag && oflag)
+               usage();
+       if (dflag)
+               (void)daemon(1, 1);
+
        memset(&act, 0, sizeof(act));
        act.sa_handler = sighandler;
        sigaction(SIGINT,  &act, 0);
@@ -588,10 +641,9 @@ main(void)
 
        dpy = XOpenDisplay(NULL);
 
-       XFetchName(dpy, DefaultRootWindow(dpy), &status_old);
-
        while (!done) {
                status_string[0] = '\0';
+
                for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
                        argument = args[i];
                        if (argument.args == NULL)
@@ -607,8 +659,12 @@ main(void)
                        free(res);
                        free(element);
                }
-               XStoreName(dpy, DefaultRootWindow(dpy), status_string);
-               XSync(dpy, False);
+
+               if (!oflag)
+                       set_status(status_string);
+               else
+                       printf("%s\n", status_string);
+
                /*
                 * subtract delay time spend in function
                 * calls from the actual global delay time
@@ -617,8 +673,8 @@ main(void)
                delay = 0;
        }
 
-       XStoreName(dpy, DefaultRootWindow(dpy), status_old);
-       XSync(dpy, False);
+       if (!oflag)
+               set_status(NULL);
 
        XCloseDisplay(dpy);