From a39e9d81631a012818adfa1c3db13a567313c37c Mon Sep 17 00:00:00 2001
From: srowen <srowen@59b500cc-1b3d-0410-9834-0bbf25fbcc57>
Date: Sun, 15 Jan 2012 18:21:18 +0000
Subject: [PATCH] Issue 1124 only allow encoding of even-length ITF input

git-svn-id: https://zxing.googlecode.com/svn/trunk@2118 59b500cc-1b3d-0410-9834-0bbf25fbcc57
---
 core/src/com/google/zxing/oned/ITFWriter.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/src/com/google/zxing/oned/ITFWriter.java b/core/src/com/google/zxing/oned/ITFWriter.java
index 91667fd25..be8f51268 100644
--- a/core/src/com/google/zxing/oned/ITFWriter.java
+++ b/core/src/com/google/zxing/oned/ITFWriter.java
@@ -46,6 +46,9 @@ public final class ITFWriter extends UPCEANWriter {
   @Override
   public byte[] encode(String contents) {
     int length = contents.length();
+    if (length % 2 != 0) {
+      throw new IllegalArgumentException("The lenght of the input should be even");
+    }
     if (length > 80) {
       throw new IllegalArgumentException(
           "Requested contents should be less than 80 digits long, but got " + length);