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- /*
- * Copyright (C) 2012, Google Inc.
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - 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.
- *
- * - Neither the name of the Eclipse Foundation, 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.
- */
-
- package org.eclipse.jgit.internal.storage.file;
-
- import java.io.DataInput;
- import java.io.IOException;
- import java.io.InputStream;
-
- import org.eclipse.jgit.util.IO;
- import org.eclipse.jgit.util.NB;
-
- /**
- * An implementation of DataInput that only handles readInt() and readLong()
- * using the Git conversion utilities for network byte order handling. This is
- * needed to read {@link com.googlecode.javaewah.EWAHCompressedBitmap}s.
- */
- class SimpleDataInput implements DataInput {
- private final InputStream fd;
-
- private final byte[] buf = new byte[8];
-
- SimpleDataInput(InputStream fd) {
- this.fd = fd;
- }
-
- /** {@inheritDoc} */
- @Override
- public int readInt() throws IOException {
- readFully(buf, 0, 4);
- return NB.decodeInt32(buf, 0);
- }
-
- /** {@inheritDoc} */
- @Override
- public long readLong() throws IOException {
- readFully(buf, 0, 8);
- return NB.decodeInt64(buf, 0);
- }
-
- /**
- * Read unsigned int
- *
- * @return a long.
- * @throws java.io.IOException
- * if any.
- */
- public long readUnsignedInt() throws IOException {
- readFully(buf, 0, 4);
- return NB.decodeUInt32(buf, 0);
- }
-
- /** {@inheritDoc} */
- @Override
- public void readFully(byte[] b) throws IOException {
- readFully(b, 0, b.length);
- }
-
- /** {@inheritDoc} */
- @Override
- public void readFully(byte[] b, int off, int len) throws IOException {
- IO.readFully(fd, b, off, len);
- }
-
- /** {@inheritDoc} */
- @Override
- public int skipBytes(int n) throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public boolean readBoolean() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public byte readByte() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public int readUnsignedByte() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public short readShort() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public int readUnsignedShort() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public char readChar() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public float readFloat() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public double readDouble() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public String readLine() throws IOException {
- throw new UnsupportedOperationException();
- }
-
- /** {@inheritDoc} */
- @Override
- public String readUTF() throws IOException {
- throw new UnsupportedOperationException();
- }
- }
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