svn commit: r1583910 - /chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java

[je...@apache.org]

Author: jens
Date: Wed Apr  2 07:26:26 2014
New Revision: 1583910

URL: http://svn.apache.org/r1583910
Log:
Add missing class

Added:
    chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java

Added: chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java
URL: http://svn.apache.org/viewvc/chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java?rev=1583910&view=auto
==============================================================================
--- chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java (added)
+++ chemistry/opencmis/trunk/chemistry-opencmis-server/chemistry-opencmis-server-inmemory/src/main/java/org/apache/chemistry/opencmis/inmemory/storedobj/impl/RandomInputStream.java Wed Apr  2 07:26:26 2014
@@ -0,0 +1,113 @@
+/*
+ * 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.chemistry.opencmis.inmemory.storedobj.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Random;
+
+public class RandomInputStream extends InputStream {
+
+    private Random random = new Random();
+    private boolean isClosed = false;
+    private long size;
+    private long bytesRead;
+
+    public RandomInputStream(long size) {
+        this.size = size;
+    }
+    
+    @Override
+    public int read() throws IOException {
+        checkOpen();
+        long len = checkLimit(1);
+        if (len > 0) {
+            int result = random.nextInt() % 256;
+            if (result < 0) {
+                result = -result;
+            }
+            bytesRead++;
+            return result;
+        } else {
+            return -1;
+        }
+    }
+
+    @Override
+    public int read(byte[] data, int offset, int length) throws IOException {
+        checkOpen();
+        int sizeToRead = (int)checkLimit(length);
+        if (0 == sizeToRead) {
+            return -1;
+        }
+
+        byte[] temp = new byte[sizeToRead];
+        random.nextBytes(temp);
+        System.arraycopy(temp, 0, data, offset, sizeToRead);
+        bytesRead += length;
+        return length;
+    }
+
+    @Override
+    public int read(byte[] data) throws IOException {
+        checkOpen();
+        long len = checkLimit(data.length);
+        if (0 == len) {
+            return -1;
+        }
+        random.nextBytes(data);
+        bytesRead += len;
+        return (int) len;
+    }
+
+    @Override
+    public long skip(long bytesToSkip) throws IOException {
+        checkOpen();
+        long skip = checkLimit(bytesToSkip);
+        bytesRead += skip;
+        return skip;
+    }
+
+    @Override
+    public void close() {
+        this.isClosed = true;
+    }
+
+    @Override
+    public int available() {
+        return (int)(size - bytesRead);
+    }
+
+    private void checkOpen() throws IOException {
+        if (isClosed) {
+            throw new IOException("RandomInputStream was already closed.");
+        }
+    }
+
+    private long checkLimit(long sizeRequested) {
+        if (bytesRead >= size) {
+            return 0;
+        } else if (bytesRead + sizeRequested >= size) {
+            return size - bytesRead;
+        } else {
+            return sizeRequested;
+        }
+    }
+
+}