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+/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * The Contents of this file are made available subject to the terms of
+ * the BSD license.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Sun Microsystems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *************************************************************************/
+
+import com.sun.star.io.BufferSizeExceededException;
+import com.sun.star.io.NotConnectedException;
+import com.sun.star.io.XInputStream;
+import com.sun.star.io.XSeekable;
+
+/**
+ * XInputStream interface implementation.
+ */
+public class MyInputStream implements XSeekable, XInputStream {
+
+ /**
+ * Member properties
+ */
+ private int offset = 0;
+ private int read = offset;
+ private byte[] bigbuffer;
+
+ /**
+ * Constructor
+ */
+ public MyInputStream() {
+ }
+
+ // XSeekable. Makes it possible to seek to a certain position within a stream.
+
+ /**
+ * Returns the length of the stream.
+ *
+ *@return long The length of the storage medium on which the stream works.
+ */
+ public synchronized long getLength()
+ throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
+ if ( bigbuffer != null ) {
+ return bigbuffer.length - offset;
+ } else {
+ return 0;
+ }
+ }
+
+ /**
+ * Returns the current offset of the stream.
+ *
+ *@return long The current offset in this stream.
+ */
+ public synchronized long getPosition()
+ throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
+ return read - offset ;
+ }
+
+ /**
+ * Changes the seek pointer to a new location relative to the beginning of the stream.
+ */
+ public synchronized void seek(long p0)
+ throws IllegalArgumentException, com.sun.star.io.IOException,
+ com.sun.star.uno.RuntimeException {
+ if( bigbuffer != null ) {
+ p0 +=offset;
+ read = ( int ) p0;
+ if( read < offset || read > bigbuffer.length )
+ throw new IllegalArgumentException();
+ }
+ }
+
+ // XInputStream. This is the basic interface to read data from a stream.
+
+ /**
+ * States how many bytes can be read or skipped without blocking.
+ *
+ *@return int If not available, then returned 0
+ */
+ public synchronized int available()
+ throws NotConnectedException, com.sun.star.io.IOException,
+ com.sun.star.uno.RuntimeException {
+ if( bigbuffer != null )
+ return ( bigbuffer.length - read );
+ else
+ return 0;
+ }
+
+ /**
+ * Closes the stream. .
+ */
+ public void closeInput()
+ throws NotConnectedException,com.sun.star.io.IOException,
+ com.sun.star.uno.RuntimeException {
+ read = -1;
+ }
+
+ /**
+ * Reads the specified number of bytes in the given sequence.
+ */
+ public synchronized int readBytes(byte[][] p0, int p1)
+ throws NotConnectedException, BufferSizeExceededException,
+ com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
+ if( bigbuffer != null ) {
+ if( read == -1 )
+ return 0;
+ int i = 0;
+ int available;
+ if ( p1 > bigbuffer.length - read )
+ available = bigbuffer.length - read;
+ else
+ available = p1;
+
+ p0[0] = new byte[p1];
+ while( available != 0 ) {
+ p0[0][i++] = bigbuffer[read++];
+ --available;
+ }
+ return i;
+ } else {
+ p0[0] = new byte[0];
+ return 0;
+ }
+ }
+
+ /**
+ * Reads the available number of bytes at maximum nMaxBytesToRead .
+ * This method blocks the thread until at least one byte is available.
+ */
+ public synchronized int readSomeBytes(byte[][] p0, int p1)
+ throws NotConnectedException,
+ BufferSizeExceededException,
+ com.sun.star.io.IOException,
+ com.sun.star.uno.RuntimeException {
+ return readBytes( p0,p1 );
+ }
+
+ /**
+ * Skips the next nBytesToSkip bytes (must be positive).
+ * It is up to the implementation whether this method is blocking the thread or not.
+ */
+ public synchronized void skipBytes(int p0)
+ throws NotConnectedException, BufferSizeExceededException,
+ com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
+ read += p0;
+ if( read > bigbuffer.length )
+ read = bigbuffer.length;
+
+ if( read < offset )
+ read = offset;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */