From d71d238a196d2fec68cb25174c7f84c9c59ac62e Mon Sep 17 00:00:00 2001
From: Iwan Timmer <irtimmer@gmail.com>
Date: Wed, 15 Jul 2015 11:56:48 +0200
Subject: [PATCH] Error message when specifying unused mapping

---
 src/main.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main.c b/src/main.c
index 7de91e5..b2f9245 100644
--- a/src/main.c
+++ b/src/main.c
@@ -178,6 +178,8 @@ int main(int argc, char* argv[]) {
   int option_index = 0;
   bool sops = true;
   bool localaudio = false;
+  bool inputAdded = false;
+  bool mapped = true;
   int c;
   while ((c = getopt_long_only(argc, argv, "-abc:d:efg:h:i:j:k:lm:n", long_options, &option_index)) != -1) {
     switch (c) {
@@ -212,6 +214,8 @@ int main(int argc, char* argv[]) {
       break;
     case 'j':
       input_create(optarg, mapping);
+      inputAdded = true;
+      mapped = true;
       break;
     case 'k':
       mapping = get_path(optarg);
@@ -219,6 +223,7 @@ int main(int argc, char* argv[]) {
         fprintf(stderr, "Unable to open custom mapping file: %s\n", optarg);
         exit(-1);
       }
+      mapped = false;
       break;
     case 'l':
       sops = false;
@@ -241,6 +246,11 @@ int main(int argc, char* argv[]) {
     }
   }
 
+  if (inputAdded && !mapped) {
+    fprintf(stderr, "Mapping option should be followed by the input to be mapped.\n");
+    exit(-1);
+  }
+
   if (action == NULL || strcmp("help", action) == 0)
     help();
   else if (strcmp("map", action) == 0) {