From e36cc1889329edaaa6b6a06bd597b8bfa018e470 Mon Sep 17 00:00:00 2001
From: C-3PO <c-3po@jedipedia.net>
Date: Fri, 14 Sep 2018 01:57:49 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=9A=91=20Fix=20segmentation=20fault=20is?=
 =?UTF-8?q?=20supplying=20an=20unknown=20long=20argument?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main.c           | 2 ++
 src/parseArguments.c | 5 +++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main.c b/src/main.c
index 07a9a9c..7ab3627 100644
--- a/src/main.c
+++ b/src/main.c
@@ -116,6 +116,8 @@ int main(int argc, char *argv[]) {
     //Optionally perform xdelta3
     if (state.prevFile) {
       //TODO
+      fprintf(stderr, "xdelta3 is not yet implemented.\n");
+      errorAndExit();
     }
   }
 
diff --git a/src/parseArguments.c b/src/parseArguments.c
index 019d764..8864f5d 100644
--- a/src/parseArguments.c
+++ b/src/parseArguments.c
@@ -15,6 +15,7 @@ static struct option long_options[] = {
   {"size", required_argument, 0, 's'},
   {"keys", required_argument, 0, 'k'},
   {"prev", required_argument, 0, 'p'},
+  {NULL, 0, 0, 0},
 };
 
 
@@ -74,7 +75,7 @@ struct arguments parseArguments(int argc, char *argv[]) {
         break;
       }
       case 'p': //prev file for xdelta3
-        //TODO
+        state.prevFile = optarg;
         break;
       case '?':
         errorAndExit();
@@ -101,7 +102,7 @@ struct arguments parseArguments(int argc, char *argv[]) {
   }
 
   if (optind < argc) {
-    fprintf(stderr, "Found %i arguments without an option. All arguments must be preceded by an option.\n", argc - optind);
+    fprintf(stderr, "Found %i argument(s) without an option. All arguments must be preceded by an option.\n", argc - optind);
     errorAndExit();
   }