Checkupdates & Divider Functions

- Add checkupdates function to count number of available updates
- Add divider function to print divider symbol as argument
- Update README with these modifications

Makefile

@@ -7,9 +7,11 @@ include config.mk
 REQ = util
 COM =\
 	components/battery\
+	components/check_updates\
 	components/cpu\
 	components/datetime\
 	components/disk\
+	components/divider\
 	components/entropy\
 	components/hostname\
 	components/ip\

README.md

@@ -65,7 +65,7 @@ Cleaning up the whole codebase it the goal before thinking about a release.
 
 * Change unknown string to "?"
 * Customize Status Bar
-  * User
+  * Username
   * CPU Usage
   * RAM Usage
   * Disk Usage
@@ -73,3 +73,6 @@ Cleaning up the whole codebase it the goal before thinking about a release.
   * Battery Stats
   * Date
   * Time
+* Custom Functions
+  * **check_updates** uses **run_command** to get number of packages that need to be updated
+  * **divider** prints the *divider_symbol* via a separate function rather than in the format of another function

components/check_updates.c

@@ -0,0 +1,12 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <string.h>
+
+#include "../slstatus.h"
+
+const char *
+check_updates(void)
+{
+    const char *cmd = "checkupdates | wc -l";
+    return run_command(cmd);
+}

components/divider.c

@@ -0,0 +1,9 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <string.h>
+
+const char *
+divider(const char *div)
+{
+    return div;
+}

config.h

@@ -10,6 +10,7 @@ static const char unknown_str[] = "?";
 #define MAXLEN 2048
 
 static const char battery_name[] = "BAT0";
+static const char divider_symbol[] = "|";
 
 /*
  * function            description                     argument (example)
@@ -20,6 +21,7 @@ static const char battery_name[] = "BAT0";
  *                                                     NULL on OpenBSD/FreeBSD
  * battery_remaining   battery remaining HH:MM         battery name (BAT0)
  *                                                     NULL on OpenBSD/FreeBSD
+ * check_updates       num available updates           NULL
  * cpu_perc            cpu usage in percent            NULL
  * cpu_freq            cpu frequency in MHz            NULL
  * datetime            date and time                   format string (%F %T)
@@ -27,6 +29,7 @@ static const char battery_name[] = "BAT0";
  * 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 (/)
+ * divider             insert divider                  divider symbol
  * entropy             available entropy               NULL
  * gid                 GID of current user             NULL
  * hostname            hostname                        NULL
@@ -64,15 +67,24 @@ static const char battery_name[] = "BAT0";
  * wifi_essid          WiFi ESSID                      interface name (wlan0)
  */
 static const struct arg args[] = {
-	/* function				format          argument */
-	{ username,				"|  %s ",		NULL },
-	{ cpu_perc,				"|  %s%% ",	NULL },
-	{ ram_perc,				"|  %s%% ",	NULL },
-	{ disk_perc,			"|  %s%% ",	"/home" },
-	{ run_command,			"|  %s ",		"checkupdates | wc -l" },
-	{ battery_state,		"|  %s",		battery_name },
+	/* function				format          argument		*/
+	{ divider,				"%s",			divider_symbol },
+	{ username,				" %s",			NULL },
+	{ divider,				"%s",			divider_symbol },
+	{ cpu_perc,				" %s%%",		NULL },
+	{ divider,				"%s",			divider_symbol },
+	{ ram_perc,				" %s%%",		NULL },
+	{ divider,				"%s",			divider_symbol },
+	{ disk_perc,			" %s%%",		"/home" },
+	{ divider,				"%s",			divider_symbol },
+	{ check_updates,		" %s",			NULL },
+	{ divider,				"%s",			divider_symbol },
+	{ battery_state,		" %s",			battery_name },
 	{ battery_perc,			"%s%%",			battery_name },
-	{ battery_remaining,	" (%s) ",		battery_name },
-	{ datetime,				"|  %s ",		"%a %x" },
-	{ datetime,				"|  %s |",		"%I:%M:%S %p" },
+	{ battery_remaining,	" (%s)",		battery_name },
+	{ divider,				"%s",			divider_symbol },
+	{ datetime,				" %s",			"%a %x" },
+	{ divider,				"%s",			divider_symbol },
+	{ datetime,				" %s",			"%I:%M:%S %p" },
+	{ divider,				"%s",			divider_symbol },
 };

slstatus.h

@@ -5,6 +5,9 @@ const char *battery_perc(const char *);
 const char *battery_state(const char *);
 const char *battery_remaining(const char *);
 
+/* check updates */
+const char *check_updates(void);
+
 /* cpu */
 const char *cpu_freq(void);
 const char *cpu_perc(void);
@@ -18,6 +21,9 @@ const char *disk_perc(const char *path);
 const char *disk_total(const char *path);
 const char *disk_used(const char *path);
 
+/* divider */
+const char *divider(const char *div);
+
 /* entropy */
 const char *entropy(void);