shorter copyright notice and moved back VERSION and _GNU_SOURCE as the man page versi...

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 174a17c..fd27570 100644 (file)
--- a/slstatus.c
+++ b/slstatus.c
@@ -37,34 +37,34 @@ struct arg {
        const char *args;
 };
 
-static char *smprintf(const char *, ...);
-static char *battery_perc(const char *);
-static char *battery_state(const char *);
+static char *smprintf(const char *fmt, ...);
+static char *battery_perc(const char *bat);
+static char *battery_state(const char *bat);
 static char *cpu_perc(void);
-static char *datetime(const char *);
-static char *disk_free(const char *);
-static char *disk_perc(const char *);
-static char *disk_total(const char *);
-static char *disk_used(const char *);
+static char *datetime(const char *fmt);
+static char *disk_free(const char *mnt);
+static char *disk_perc(const char *mnt);
+static char *disk_total(const char *mnt);
+static char *disk_used(const char *mnt);
 static char *entropy(void);
 static char *gid(void);
 static char *hostname(void);
-static char *ip(const char *);
+static char *ip(const char *iface);
 static char *load_avg(void);
 static char *ram_free(void);
 static char *ram_perc(void);
 static char *ram_used(void);
 static char *ram_total(void);
-static char *run_command(const char *);
-static char *temp(const char *);
+static char *run_command(const char *cmd);
+static char *temp(const char *file);
 static char *uid(void);
 static char *uptime(void);
 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 char *vol_perc(const char *card);
+static char *wifi_perc(const char *iface);
+static char *wifi_essid(const char *iface);
+static void set_status(const char *str);
+static void sighandler(const int signo);
 static void usage(void);
 
 char *argv0;
@@ -88,10 +88,8 @@ smprintf(const char *fmt, ...)
        va_end(ap);
 
        ret = malloc(++len);
-       if (ret == NULL) {
-               warn("Malloc failed.");
-               return "n/a";
-       }
+       if (ret == NULL)
+               err(1, "malloc");
 
        va_start(ap, fmt);
        vsnprintf(ret, len, fmt, ap);
@@ -592,7 +590,7 @@ sighandler(const int signo)
 static void
 usage(void)
 {
-       fprintf(stderr, "usage: %s [-dho]\n", argv0);
+       fprintf(stderr, "usage: %s [-dhov]\n", argv0);
        exit(1);
 }
 
@@ -612,6 +610,9 @@ main(int argc, char *argv[])
                case 'o':
                        oflag = 1;
                        break;
+               case 'v':
+                       printf("slstatus %s (C) 2016 slstatus engineers\n", VERSION);
+                       return 0;
                default:
                        usage();
        } ARGEND