add configs

components/volume.c

@@ -219,3 +219,33 @@
 		return bprintf("%d", v & 0xff);
 	}
 #endif
+
+const char *
+vol_perc_pw(const char *sink)
+{
+	FILE *fp;
+	char buf[64], cmd[64];
+	double v;
+
+	if (esnprintf(cmd, sizeof(cmd), "wpctl get-volume %s", sink) < 0)
+		return NULL;
+
+	if (!(fp = popen(cmd, "r"))) {
+		warn("popen '%s':", cmd);
+		return NULL;
+	}
+
+	if (!fgets(buf, sizeof(buf), fp)) {
+		pclose(fp);
+		return NULL;
+	}
+	pclose(fp);
+
+	if (strstr(buf, "[MUTED]"))
+		return "mute";
+
+	if (sscanf(buf, "Volume: %lf", &v) != 1)
+		return NULL;
+
+	return bprintf("%d%%", (int)(v * 100 + 0.5));
+}

config.def.h

@@ -66,5 +66,8 @@ static const char unknown_str[] = "n/a";
  */
 static const struct arg args[] = {
 	/* function          format          argument */
-	{ datetime, "%s",           "%F %T" },
+	{ wifi_perc,         " wifi %s%% |", "wlan0" },
+	{ battery_perc,      " bat %s%% |",  "BAT0" },
+	{ vol_perc_pw,       " vol %s |",    "@DEFAULT_AUDIO_SINK@" },
+	{ datetime,          " %s",          "%F %T" },
 };

config.h

@@ -0,0 +1,70 @@
+/* See LICENSE file for copyright and license details. */
+
+/* interval between updates (in ms) */
+const unsigned int interval = 1000;
+
+/* text to show if no value can be retrieved */
+static const char unknown_str[] = "n/a";
+
+/* maximum output string length */
+#define MAXLEN 2048
+
+/*
+ * function            description                     argument (example)
+ *
+ * battery_perc        battery percentage              battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * battery_remaining   battery remaining HH:MM         battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * battery_state       battery charging state          battery name (BAT0)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * cat                 read arbitrary file             path
+ * cpu_freq            cpu frequency in MHz            NULL
+ * cpu_perc            cpu usage in percent            NULL
+ * datetime            date and time                   format string (%F %T)
+ * disk_free           free disk space in GB           mountpoint path (/)
+ * disk_perc           disk usage in percent           mountpoint path (/)
+ * disk_total          total disk space in GB          mountpoint path (/)
+ * disk_used           used disk space in GB           mountpoint path (/)
+ * entropy             available entropy               NULL
+ * gid                 GID of current user             NULL
+ * hostname            hostname                        NULL
+ * ipv4                IPv4 address                    interface name (eth0)
+ * ipv6                IPv6 address                    interface name (eth0)
+ * kernel_release      `uname -r`                      NULL
+ * keyboard_indicators caps/num lock indicators        format string (c?n?)
+ *                                                     see keyboard_indicators.c
+ * keymap              layout (variant) of current     NULL
+ *                     keymap
+ * load_avg            load average                    NULL
+ * netspeed_rx         receive network speed           interface name (wlan0)
+ * netspeed_tx         transfer network speed          interface name (wlan0)
+ * num_files           number of files in a directory  path
+ *                                                     (/home/foo/Inbox/cur)
+ * ram_free            free memory in GB               NULL
+ * ram_perc            memory usage in percent         NULL
+ * ram_total           total memory size in GB         NULL
+ * ram_used            used memory in GB               NULL
+ * run_command         custom shell command            command (echo foo)
+ * swap_free           free swap in GB                 NULL
+ * swap_perc           swap usage in percent           NULL
+ * swap_total          total swap size in GB           NULL
+ * swap_used           used swap in GB                 NULL
+ * temp                temperature in degree celsius   sensor file
+ *                                                     (/sys/class/thermal/...)
+ *                                                     NULL on OpenBSD
+ *                                                     thermal zone on FreeBSD
+ *                                                     (tz0, tz1, etc.)
+ * uid                 UID of current user             NULL
+ * up                  interface is running            interface name (eth0)
+ * uptime              system uptime                   NULL
+ * username            username of current user        NULL
+ * vol_perc            OSS/ALSA volume in percent      mixer file (/dev/mixer)
+ *                                                     NULL on OpenBSD/FreeBSD
+ * wifi_essid          WiFi ESSID                      interface name (wlan0)
+ * wifi_perc           WiFi signal in percent          interface name (wlan0)
+ */
+static const struct arg args[] = {
+    /* function          format          argument */
+    {wifi_essid, "%s", "wlan0"}, {wifi_perc, " %s%% |", "wlan0"}, {battery_perc, " bat %s%%", "BAT0"}, {battery_state, "%s |", "BAT0"}, {vol_perc_pw, " vol %s |", "@DEFAULT_AUDIO_SINK@"}, {datetime, " %s", "%F %T"},
+};

slstatus.h

@@ -79,6 +79,7 @@ const char *username(const char *unused);
 
 /* volume */
 const char *vol_perc(const char *card);
+const char *vol_perc_pw(const char *sink);
 
 /* wifi */
 const char *wifi_essid(const char *interface);