com.itextpdf.text.io.RASInputStream Maven / Gradle / Ivy
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2019 iText Group NV
* Authors: Kevin Day, Bruno Lowagie, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
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* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
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* details. You should have received a copy of the GNU Affero General License
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* MA, 02110-1301 USA, or download the license from the following URL:
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*
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* Section 5 of the GNU Affero General License.
*
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* manipulated using iText.
*
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* commercial license. Buying such a license is mandatory as soon as you develop
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package com.itextpdf.text.io;
import java.io.IOException;
import java.io.InputStream;
/**
* An input stream that uses a RandomAccessSource as it's underlying source
* @since 5.3.5
*/
public class RASInputStream extends InputStream {
/**
* The source
*/
private final RandomAccessSource source;
/**
* The current position in the source
*/
private long position = 0;
/**
* Creates an input stream based on the source
* @param source the source
*/
public RASInputStream(RandomAccessSource source){
this.source = source;
}
@Override
/**
* {@inheritDoc}
*/
public int read(byte[] b, int off, int len) throws IOException {
int count = source.get(position, b, off, len);
position += count;
return count;
}
@Override
/**
* {@inheritDoc}
*/
public int read() throws IOException {
return source.get(position++);
}
}