001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.vfs2.provider;
018
019import java.io.DataInputStream;
020import java.io.IOException;
021import java.io.InputStream;
022
023import org.apache.commons.vfs2.util.RandomAccessMode;
024
025/**
026 * Implements the part usable for all stream-based random access.
027 */
028public abstract class AbstractRandomAccessStreamContent extends AbstractRandomAccessContent {
029    protected AbstractRandomAccessStreamContent(final RandomAccessMode mode) {
030        super(mode);
031    }
032
033    protected abstract DataInputStream getDataInputStream() throws IOException;
034
035    @Override
036    public byte readByte() throws IOException {
037        return getDataInputStream().readByte();
038    }
039
040    @Override
041    public char readChar() throws IOException {
042        return getDataInputStream().readChar();
043    }
044
045    @Override
046    public double readDouble() throws IOException {
047        return getDataInputStream().readDouble();
048    }
049
050    @Override
051    public float readFloat() throws IOException {
052        return getDataInputStream().readFloat();
053    }
054
055    @Override
056    public int readInt() throws IOException {
057        return getDataInputStream().readInt();
058    }
059
060    @Override
061    public int readUnsignedByte() throws IOException {
062        return getDataInputStream().readUnsignedByte();
063    }
064
065    @Override
066    public int readUnsignedShort() throws IOException {
067        return getDataInputStream().readUnsignedShort();
068    }
069
070    @Override
071    public long readLong() throws IOException {
072        return getDataInputStream().readLong();
073    }
074
075    @Override
076    public short readShort() throws IOException {
077        return getDataInputStream().readShort();
078    }
079
080    @Override
081    public boolean readBoolean() throws IOException {
082        return getDataInputStream().readBoolean();
083    }
084
085    @Override
086    public int skipBytes(final int n) throws IOException {
087        return getDataInputStream().skipBytes(n);
088    }
089
090    @Override
091    public void readFully(final byte[] b) throws IOException {
092        getDataInputStream().readFully(b);
093    }
094
095    @Override
096    public void readFully(final byte[] b, final int off, final int len) throws IOException {
097        getDataInputStream().readFully(b, off, len);
098    }
099
100    @Override
101    public String readUTF() throws IOException {
102        return getDataInputStream().readUTF();
103    }
104
105    @Override
106    public InputStream getInputStream() throws IOException {
107        return getDataInputStream();
108    }
109
110    @Override
111    public void setLength(final long newLength) throws IOException {
112        throw new UnsupportedOperationException();
113    }
114}