Move string_to_long() to misc.c

src/misc.c

@@ -25,6 +25,7 @@
 #include <string.h>
 #include <time.h>
 #include <sys/time.h>
+#include <errno.h>
 #include "error.h"
 #include "print.h"
 #include "options.h"
@@ -91,3 +92,19 @@ void delay(long ms)
 
     nanosleep(&ts, NULL);
 }
+
+long string_to_long(char *string)
+{
+    long result;
+    char *end_token;
+
+    errno = 0;
+    result = strtol(string, &end_token, 10);
+    if ((errno != 0) || (*end_token != 0))
+    {
+        printf("Error: Invalid digit\n");
+        exit(EXIT_FAILURE);
+    }
+
+    return result;
+}

src/misc.h

@@ -24,3 +24,4 @@
 
 char * current_time(void);
 void delay(long ms);
+long string_to_long(char *string);

src/options.c

@@ -32,6 +32,7 @@
 #include <limits.h>
 #include "options.h"
 #include "error.h"
+#include "misc.h"
 
 /* Default options */
 struct option_t option =
@@ -80,22 +81,6 @@ void print_help(char *argv[])
     printf("\n");
 }
 
-long string_to_long(char *string)
-{
-    long result;
-    char *end_token;
-
-    errno = 0;
-    result = strtol(string, &end_token, 10);
-    if ((errno != 0) || (*end_token != 0))
-    {
-        printf("Error: Invalid digit\n");
-        exit(EXIT_FAILURE);
-    }
-
-    return result;
-}
-
 void parse_options(int argc, char *argv[])
 {
     int c;

src/options.h

@@ -56,5 +56,4 @@ struct option_t
 
 extern struct option_t option;
 
-long string_to_long(char *string);
 void parse_options(int argc, char *argv[]);