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/*
* 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 org.apg;
import java.io.IOException;
import java.io.InputStream;
public class PositionAwareInputStream extends InputStream {
private InputStream mStream;
private long mPosition;
public PositionAwareInputStream(InputStream in) {
mStream = in;
mPosition = 0;
}
@Override
public int read() throws IOException {
int ch = mStream.read();
++mPosition;
return ch;
}
@Override
public int available() throws IOException {
return mStream.available();
}
@Override
public void close() throws IOException {
mStream.close();
}
@Override
public boolean markSupported() {
return false;
}
@Override
public int read(byte[] b) throws IOException {
int result = mStream.read(b);
mPosition += result;
return result;
}
@Override
public int read(byte[] b, int offset, int length) throws IOException {
int result = mStream.read(b, offset, length);
mPosition += result;
return result;
}
@Override
public synchronized void reset() throws IOException {
mStream.reset();
mPosition = 0;
}
@Override
public long skip(long n) throws IOException {
long result = mStream.skip(n);
mPosition += result;
return result;
}
public long position() {
return mPosition;
}
}
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