| /* |
| * Copyright 2006 ProductiveMe Inc. |
| * Copyright 2013 JetBrains s.r.o. |
| * |
| * Licensed 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 com.pme.util; |
| |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| /** |
| * @author yole |
| */ |
| public class OffsetTrackingInputStream implements DataInput { |
| private final DataInputStream myBaseStream; |
| private long myOffset = 0; |
| |
| public OffsetTrackingInputStream(DataInputStream baseStream) { |
| myBaseStream = baseStream; |
| } |
| |
| public long getOffset() { |
| return myOffset; |
| } |
| |
| @Override |
| public void readFully(byte[] b) throws IOException { |
| myBaseStream.readFully(b); |
| myOffset += b.length; |
| } |
| |
| @Override |
| public void readFully(byte[] b, int off, int len) throws IOException { |
| myBaseStream.readFully(b, off, len); |
| myOffset += len; |
| } |
| |
| @Override |
| public int skipBytes(int n) throws IOException { |
| int skipped = myBaseStream.skipBytes(n); |
| myOffset += skipped; |
| return skipped; |
| } |
| |
| @Override |
| public boolean readBoolean() throws IOException { |
| myOffset++; |
| return myBaseStream.readBoolean(); |
| } |
| |
| @Override |
| public byte readByte() throws IOException { |
| myOffset++; |
| return myBaseStream.readByte(); |
| } |
| |
| @Override |
| public int readUnsignedByte() throws IOException { |
| myOffset++; |
| return myBaseStream.readUnsignedByte(); |
| } |
| |
| @Override |
| public short readShort() throws IOException { |
| myOffset += 2; |
| return myBaseStream.readShort(); |
| } |
| |
| @Override |
| public int readUnsignedShort() throws IOException { |
| myOffset += 2; |
| return myBaseStream.readUnsignedShort(); |
| } |
| |
| @Override |
| public char readChar() throws IOException { |
| myOffset += 2; |
| return myBaseStream.readChar(); |
| } |
| |
| @Override |
| public int readInt() throws IOException { |
| myOffset += 4; |
| return myBaseStream.readInt(); |
| } |
| |
| @Override |
| public long readLong() throws IOException { |
| myOffset += 8; |
| return myBaseStream.readLong(); |
| } |
| |
| @Override |
| public float readFloat() throws IOException { |
| myOffset += 4; |
| return myBaseStream.readFloat(); |
| } |
| |
| @Override |
| public double readDouble() throws IOException { |
| myOffset += 8; |
| return myBaseStream.readDouble(); |
| } |
| |
| @Override |
| public String readLine() throws IOException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public String readUTF() throws IOException { |
| throw new UnsupportedOperationException(); |
| } |
| } |