org.smallmind.swing.io.ProgressInputStream Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.swing.io;
import java.io.IOException;
import java.io.InputStream;
import org.smallmind.swing.progress.ProgressDataHandler;
import org.smallmind.swing.progress.ProgressPanel;
public class ProgressInputStream extends InputStream implements ProgressDataHandler {
private final ProgressPanel progressPanel;
private final InputStream inputStream;
private final long length;
private long index;
private long markIndex;
public ProgressInputStream (InputStream inputStream, long length, long pulseTime) {
this.inputStream = inputStream;
this.length = length;
index = 0;
markIndex = 0;
progressPanel = new ProgressPanel(this, pulseTime);
}
public long getLength () {
return length;
}
public synchronized long getIndex () {
return index;
}
public ProgressPanel getIOProgressPanel () {
return progressPanel;
}
public synchronized int read ()
throws IOException {
int readValue;
if ((readValue = inputStream.read()) >= 0) {
index++;
}
return readValue;
}
public synchronized int read (byte[] buf)
throws IOException {
int readValue;
if ((readValue = inputStream.read(buf)) >= 0) {
index += readValue;
}
return readValue;
}
public synchronized int read (byte[] buf, int off, int len)
throws IOException {
int readValue;
if ((readValue = inputStream.read(buf, off, len)) >= 0) {
index += readValue;
}
return readValue;
}
public synchronized long skip (long n)
throws IOException {
long skipValue;
skipValue = inputStream.skip(n);
index += skipValue;
return skipValue;
}
public synchronized void mark (int readAheadLimit) {
inputStream.mark(readAheadLimit);
markIndex = index;
}
public synchronized void reset ()
throws IOException {
inputStream.reset();
index = markIndex;
}
public void close ()
throws IOException {
inputStream.close();
}
}