From cf3c40fbe015d0f6f62bd82e928823b05237c272 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bence=20Sg=C3=A1netz?= <voidxb@gmail.com>
Date: Fri, 21 Oct 2022 22:15:55 +0200
Subject: [PATCH] Missing files from previous commit

---
 Cavern.Format/Common/KeyLengthValue.cs    |  2 ++
 Cavern.Format/Common/_Exceptions.cs       | 12 ++++++++++++
 Cavern.Format/Container/Matroska/Block.cs |  1 +
 3 files changed, 15 insertions(+)

diff --git a/Cavern.Format/Common/KeyLengthValue.cs b/Cavern.Format/Common/KeyLengthValue.cs
index b3537df8..bcf4e71b 100644
--- a/Cavern.Format/Common/KeyLengthValue.cs
+++ b/Cavern.Format/Common/KeyLengthValue.cs
@@ -2,6 +2,8 @@
 using System.IO;
 using System.Text;
 
+using Cavern.Format.Utilities;
+
 namespace Cavern.Format.Common {
     /// <summary>
     /// A tag and its data encoded in the format of a key, a length, and a value, most notably used in the EBML format.
diff --git a/Cavern.Format/Common/_Exceptions.cs b/Cavern.Format/Common/_Exceptions.cs
index 8b638f02..f3abd766 100644
--- a/Cavern.Format/Common/_Exceptions.cs
+++ b/Cavern.Format/Common/_Exceptions.cs
@@ -37,6 +37,18 @@ public class DecoderException : Exception {
         public DecoderException(int errorCode) : base(string.Format(message, errorCode)) { }
     }
 
+    /// <summary>
+    /// Tells that no program was detected in the container/track.
+    /// </summary>
+    public class NoProgramException : Exception {
+        const string message = "No program was detected.";
+
+        /// <summary>
+        /// Tells that no program was detected in the container/track.
+        /// </summary>
+        public NoProgramException() : base(message) { }
+    }
+
     /// <summary>
     /// Tells that a decoder which can process an infinite stream is not able to return content length.
     /// </summary>
diff --git a/Cavern.Format/Container/Matroska/Block.cs b/Cavern.Format/Container/Matroska/Block.cs
index c8b2df4f..fe4fef35 100644
--- a/Cavern.Format/Container/Matroska/Block.cs
+++ b/Cavern.Format/Container/Matroska/Block.cs
@@ -1,6 +1,7 @@
 using System.IO;
 
 using Cavern.Format.Common;
+using Cavern.Format.Utilities;
 using Cavern.Utilities;
 
 namespace Cavern.Format.Container.Matroska {