add print file size

source/arg_func.cpp

@@ -30,6 +30,7 @@ void print_args()
 	printf(" -l                   list all labels\n");
 	printf(" -p                   print all passwords\n");
 	printf(" -c                   change master password\n");
+	printf(" -z                   print size of file\n");
 	printf(" -f <folder path>     select save folder\n");
 }
 
@@ -58,6 +59,8 @@ Arg get_args(int argc, char **argv, char **label)
 		return Arg::Print_all_p;
 	case 'c':
 		return Arg::Change;
+	case 'z':
+		return Arg::Size;
 	}
 
 	if (argc != 3)
@@ -347,4 +350,9 @@ void arg_file(Buffer &decrypted_buffer, Buffer &encrypted_buffer, const char *la
 
 	crypto.encrypt(&decrypted_buffer, &encrypted_buffer);
 	encrypted_buffer.save_to_file(save.string());
+}
+
+void arg_size(Buffer &encrypted_buffer)
+{
+	printf("File size is: %ldB\n", encrypted_buffer.taken);
 }