1 files changed, 129 insertions, 0 deletions
diff --git a/java/com/android/voicemailomtp/src/org/apache/james/mime4j/CloseShieldInputStream.java b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/CloseShieldInputStream.java
new file mode 100644
index 000000000..d9f3b078a
--- /dev/null
+++ b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/CloseShieldInputStream.java
@@ -0,0 +1,129 @@
+/****************************************************************
+ * Licensed to the Apache Software Foundation (ASF) under one   *
+ * or more contributor license agreements.  See the NOTICE file *
+ * distributed with this work for additional information        *
+ * regarding copyright ownership.  The ASF licenses this file   *
+ * to you under the Apache License, Version 2.0 (the            *
+ * "License"); you may not use this file except in compliance   *
+ * with the License.  You may obtain a copy of the License at   *
+ *                                                              *
+ *   http://www.apache.org/licenses/LICENSE-2.0                 *
+ *                                                              *
+ * Unless required by applicable law or agreed to in writing,   *
+ * software distributed under the License is distributed on an  *
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
+ * KIND, either express or implied.  See the License for the    *
+ * specific language governing permissions and limitations      *
+ * under the License.                                           *
+ ****************************************************************/
+
+package org.apache.james.mime4j;
+
+import java.io.InputStream;
+import java.io.IOException;
+
+/**
+ * InputStream that shields its underlying input stream from
+ * being closed.
+ *
+ *
+ * @version $Id: CloseShieldInputStream.java,v 1.2 2004/10/02 12:41:10 ntherning Exp $
+ */
+public class CloseShieldInputStream extends InputStream {
+
+    /**
+     * Underlying InputStream
+     */
+    private InputStream is;
+
+    public CloseShieldInputStream(InputStream is) {
+        this.is = is;
+    }
+
+    public InputStream getUnderlyingStream() {
+        return is;
+    }
+
+    /**
+     * @see java.io.InputStream#read()
+     */
+    public int read() throws IOException {
+        checkIfClosed();
+        return is.read();
+    }
+
+    /**
+     * @see java.io.InputStream#available()
+     */
+    public int available() throws IOException {
+        checkIfClosed();
+        return is.available();
+    }
+
+
+    /**
+     * Set the underlying InputStream to null
+     */
+    public void close() throws IOException {
+        is = null;
+    }
+
+    /**
+     * @see java.io.FilterInputStream#reset()
+     */
+    public synchronized void reset() throws IOException {
+        checkIfClosed();
+        is.reset();
+    }
+
+    /**
+     * @see java.io.FilterInputStream#markSupported()
+     */
+    public boolean markSupported() {
+        if (is == null)
+            return false;
+        return is.markSupported();
+    }
+
+    /**
+     * @see java.io.FilterInputStream#mark(int)
+     */
+    public synchronized void mark(int readlimit) {
+        if (is != null)
+            is.mark(readlimit);
+    }
+
+    /**
+     * @see java.io.FilterInputStream#skip(long)
+     */
+    public long skip(long n) throws IOException {
+        checkIfClosed();
+        return is.skip(n);
+    }
+
+    /**
+     * @see java.io.FilterInputStream#read(byte[])
+     */
+    public int read(byte b[]) throws IOException {
+        checkIfClosed();
+        return is.read(b);
+    }
+
+    /**
+     * @see java.io.FilterInputStream#read(byte[], int, int)
+     */
+    public int read(byte b[], int off, int len) throws IOException {
+        checkIfClosed();
+        return is.read(b, off, len);
+    }
+
+    /**
+     * Check if the underlying InputStream is null. If so throw an Exception
+     *
+     * @throws IOException if the underlying InputStream is null
+     */
+    private void checkIfClosed() throws IOException {
+        if (is == null)
+            throw new IOException("Stream is closed");
+    }
+}
+\ No newline at end of file