Tweak org.apache.commons.io.input.CircularInputStream.

[IO-674] InfiniteCircularInputStream is not infinite if its input buffer
contains -1.

[IO-675] InfiniteCircularInputStream throws a divide-by-zero exception
when reading if its input buffer is size 0.

Update version from 2.7.1-SNAPSHOT to 2.8-SNAPSHOT since we are adding a
new public class.

maven-checkstyle-plugin 3.1.0 -> 3.1.1.

checkstyle.xml

@@ -30,17 +30,15 @@ limitations under the License.
   <module name="FileTabCharacter">
     <property name="fileExtensions" value="java,xml"/>
   </module>
+  <module name="LineLength">
+    <property name="max" value="160"/>
+  </module>
   <module name="TreeWalker">
     <module name="AvoidStarImport"/>
     <module name="RedundantImport"/>
     <module name="UnusedImports"/>
     <module name="NeedBraces"/>
-    <module name="LineLength">
-      <property name="max" value="160"/>
-    </module>
     <module name="JavadocMethod">
-      <property name="allowUndeclaredRTE" value="true"/>
-      <property name="allowThrowsTagsForSubclasses" value="true"/>
     </module>
  </module>
 </module>

pom.xml

@@ -290,7 +290,7 @@ file comparators, endian transformation classes, and much more.
     </commons.osgi.export>
     <commons.scmPubUrl>https://svn.apache.org/repos/infra/websites/production/commons/content/proper/commons-io/</commons.scmPubUrl>
     <commons.scmPubCheckoutDirectory>site-content</commons.scmPubCheckoutDirectory>
-    <checkstyle.plugin.version>3.1.0</checkstyle.plugin.version>
+    <checkstyle.plugin.version>3.1.1</checkstyle.plugin.version>
     <commons.jacoco.version>0.8.5</commons.jacoco.version>
     <commons.surefire.version>2.22.2</commons.surefire.version>
     <commons.japicmp.version>0.14.3</commons.japicmp.version>

src/changes/changes.xml

@@ -65,6 +65,9 @@ The <action> type attribute can be add,update,fix,remove.
       <action issue="IO-675" dev="ggregory" type="fix" due-to="Gary Gregory">
         InfiniteCircularInputStream throws a divide-by-zero exception when reading if its input buffer is size 0.
       </action>
+      <action dev="ggregory" type="fix" due-to="Gary Gregory">
+        maven-checkstyle-plugin 3.1.0 -> 3.1.1.
+      </action>
     </release>
     <!-- The release date is the date RC is cut -->
     <release version="2.7" date="2020-05-24" description="Java 8 required.">

src/main/java/org/apache/commons/io/input/CircularInputStream.java

@@ -50,6 +50,7 @@ private static byte[] validate(final byte[] repeatContent) {
         }
         return repeatContent;
     }
+
     private long byteCount;
     private int position = -1;
     private final byte[] repeatedContent;
@@ -71,9 +72,6 @@ public CircularInputStream(final byte[] repeatContent, final long targetByteCoun
 
     @Override
     public int read() {
-        if (repeatedContent.length == 0) {
-            return IOUtils.EOF;
-        }
         if (targetByteCount >= 0) {
             if (byteCount == targetByteCount) {
                 return IOUtils.EOF;