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* Licensed to the Apache Software Foundation (ASF) under one * | |
* or more contributor license agreements. See the NOTICE file * | |
* distributed with this work for additional information * | |
* regarding copyright ownership. The ASF licenses this file * | |
* to you 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 * | |
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* specific language governing permissions and limitations * | |
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****************************************************************/ | |
package org.apache.james.mime4j.io; | |
import java.io.FilterInputStream; | |
import java.io.InputStream; | |
import java.io.IOException; | |
public class PositionInputStream extends FilterInputStream { | |
protected long position = 0; | |
private long markedPosition = 0; | |
public PositionInputStream(InputStream inputStream) { | |
super(inputStream); | |
} | |
public long getPosition() { | |
return position; | |
} | |
@Override | |
public int available() throws IOException { | |
return in.available(); | |
} | |
@Override | |
public int read() throws IOException { | |
int b = in.read(); | |
if (b != -1) | |
position++; | |
return b; | |
} | |
@Override | |
public void close() throws IOException { | |
in.close(); | |
} | |
@Override | |
public void reset() throws IOException { | |
in.reset(); | |
position = markedPosition; | |
} | |
@Override | |
public boolean markSupported() { | |
return in.markSupported(); | |
} | |
@Override | |
public void mark(int readlimit) { | |
in.mark(readlimit); | |
markedPosition = position; | |
} | |
@Override | |
public long skip(long n) throws IOException { | |
final long c = in.skip(n); | |
if (c > 0) | |
position += c; | |
return c; | |
} | |
@Override | |
public int read(byte b[], int off, int len) throws IOException { | |
final int c = in.read(b, off, len); | |
if (c > 0) | |
position += c; | |
return c; | |
} | |
} |