svn commit: r1522016 - /tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java

[markt]

Author: markt
Date: Wed Sep 11 20:05:13 2013
New Revision: 1522016

URL: http://svn.apache.org/r1522016
Log:
If both the input and output buffers are exhausted at the same time, return 
UNDERFLOW as more input data would be required to trigger OVERFLOW.

Modified:
    tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java

Modified: tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java?rev=1522016&r1=1522015&r2=1522016&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java (original)
+++ tomcat/trunk/java/org/apache/tomcat/util/buf/Utf8Encoder.java Wed Sep 11 
20:05:13 2013
@@ -23,7 +23,8 @@ import java.nio.charset.CoderResult;
 import java.nio.charset.StandardCharsets;
 
 /**
- * Encodes characters as bytes using UTF-8. Extracted from Apache Harmony.
+ * Encodes characters as bytes using UTF-8. Extracted from Apache Harmony with
+ * some minor bug fixes applied.
  */
 public class Utf8Encoder extends CharsetEncoder {
 
@@ -132,7 +133,12 @@ public class Utf8Encoder extends Charset
             if (outRemaining == 0) {
                 in.position(x + 1);
                 out.position(outPos);
-                return CoderResult.OVERFLOW;
+                // If both input and output are exhausted, return UNDERFLOW
+                if (x + 1 == limit) {
+                    return CoderResult.UNDERFLOW;
+                } else {
+                    return CoderResult.OVERFLOW;
+                }
             }
 
         }
@@ -226,5 +232,4 @@ public class Utf8Encoder extends Charset
         }
         return CoderResult.UNDERFLOW;
     }
-
 }
\ No newline at end of file



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