Checking first char for null is more efficient than strlen.

5 files changed, 8 insertions, 8 deletions

diff --git a/src/librc/librc-depend.c b/src/librc/librc-depend.c
index 4ccd7ee2..c6ebf495 100644
--- a/src/librc/librc-depend.c
+++ b/src/librc/librc-depend.c
@@ -151,7 +151,7 @@ rc_depinfo_t *rc_deptree_load (void)
 		{
 			/* Sanity */
 			e = get_shell_value (p);
-			if (! e || strlen (e) == 0)
+			if (! e || *e == '\0')
 				goto next;
 
 			if (! deptree)
@@ -176,7 +176,7 @@ rc_depinfo_t *rc_deptree_load (void)
 
 		/* Sanity */
 		e = get_shell_value (p);
-		if (! e || strlen (e) == 0)
+		if (! e || *e == '\0')
 			goto next;
 
 		if (! deptype)
diff --git a/src/librc/librc-misc.c b/src/librc/librc-misc.c
index be911e9f..db6209fd 100644
--- a/src/librc/librc-misc.c
+++ b/src/librc/librc-misc.c
@@ -196,7 +196,7 @@ char **rc_config_load (const char *file)
 			do {
 				/* Bash variables are usually quoted */
 				token = strsep (&line, "\"\'");
-			} while ((token) && (strlen (token) == 0));
+			} while (token && *token == '\0');
 
 		/* Drop a newline if that's all we have */
 		if (token) {
diff --git a/src/rc/rc-applets.c b/src/rc/rc-applets.c
index 80e55aad..fc362a28 100644
--- a/src/rc/rc-applets.c
+++ b/src/rc/rc-applets.c
@@ -205,7 +205,7 @@ static int do_service (int argc, char **argv)
 	else
 		service = getenv ("SVCNAME");
 
-	if (! service || strlen (service) == 0)
+	if (! service || *service == '\0')
 		eerrorx ("%s: no service specified", applet);
 
 	if (strcmp (applet, "service_started") == 0)
@@ -252,7 +252,7 @@ static int do_mark_service (int argc, char **argv)
 	else
 		service = getenv ("SVCNAME");
 
-	if (! service || strlen (service) == 0)
+	if (! service || *service == '\0')
 		eerrorx ("%s: no service specified", applet);
 
 	if (strcmp (applet, "mark_service_started") == 0)
@@ -310,7 +310,7 @@ static int do_value (int argc, char **argv)
 	if (! service)
 		eerrorx ("%s: no service specified", applet);
 
-	if (argc < 2 || ! argv[1] || strlen (argv[1]) == 0)
+	if (argc < 2 || ! argv[1] || *argv[1] == '\0')
 		eerrorx ("%s: no option specified", applet);
 
 	if (strcmp (applet, "service_get_value") == 0 ||
diff --git a/src/rc/rc.c b/src/rc/rc.c
index e6884154..1ee7330a 100644
--- a/src/rc/rc.c
+++ b/src/rc/rc.c
@@ -634,7 +634,7 @@ int main (int argc, char **argv)
 	{
 		switch (opt) {
 			case 'o':
-				if (strlen (optarg) == 0)
+				if (*optarg == '\0')
 					optarg = NULL;
 				exit (set_ksoftlevel (optarg) ? EXIT_SUCCESS : EXIT_FAILURE);
 				case_RC_COMMON_GETOPT
diff --git a/src/rc/start-stop-daemon.c b/src/rc/start-stop-daemon.c
index 045080ea..c2293e4e 100644
--- a/src/rc/start-stop-daemon.c
+++ b/src/rc/start-stop-daemon.c
@@ -152,7 +152,7 @@ static int parse_signal (const char *sig)
 	unsigned int i = 0;
 	char *s;
 
-	if (! sig || strlen (sig) == 0)
+	if (! sig || *sig == '\0')
 		return (-1);
 
 	if (sscanf (sig, "%u", &i) == 1) {