85 lines
2.1 KiB
Java
85 lines
2.1 KiB
Java
/*
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* Copyright (C) 2010-2014 Thialfihar <thi@thialfihar.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.util;
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import java.io.IOException;
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import java.io.InputStream;
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public class PositionAwareInputStream extends InputStream {
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private InputStream mStream;
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private long mPosition;
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public PositionAwareInputStream(InputStream in) {
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mStream = in;
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mPosition = 0;
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}
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@Override
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public int read() throws IOException {
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int ch = mStream.read();
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++mPosition;
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return ch;
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}
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@Override
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public int available() throws IOException {
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return mStream.available();
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}
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@Override
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public void close() throws IOException {
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mStream.close();
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}
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@Override
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public boolean markSupported() {
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return false;
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}
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@Override
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public int read(byte[] b) throws IOException {
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int result = mStream.read(b);
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mPosition += result;
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return result;
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}
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@Override
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public int read(byte[] b, int offset, int length) throws IOException {
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int result = mStream.read(b, offset, length);
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mPosition += result;
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return result;
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}
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@Override
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public synchronized void reset() throws IOException {
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mStream.reset();
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mPosition = 0;
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}
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@Override
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public long skip(long n) throws IOException {
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long result = mStream.skip(n);
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mPosition += result;
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return result;
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}
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public long position() {
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return mPosition;
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}
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}
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