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eXist-db NoSQL Database Core
/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2018 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.exist.util;
import com.evolvedbinary.j8fu.Either;
import org.exist.util.io.FastByteArrayInputStream;
import org.xml.sax.InputSource;
import java.io.*;
import static com.evolvedbinary.j8fu.Either.Left;
import static com.evolvedbinary.j8fu.Either.Right;
public class StringInputSource extends InputSource {
private final Either source;
/**
* Creates a String Source from a string
* the InputSource will be read using
* {@link #getCharacterStream()}.
*
* @param string the input string.
*/
public StringInputSource(final String string) {
super();
this.source = Right(string);
}
/**
* Creates a String Source from bytes
* the InputSource will be read using
* {@link #getByteStream()}.
*
* @param string the input string.
*/
public StringInputSource(final byte[] string) {
super();
this.source = Left(string);
}
@Override
public Reader getCharacterStream() {
if (source.isLeft()) {
return null;
} else {
return new StringReader(source.right().get());
}
}
/**
* Set a character stream input.
*
* @param r the reader
*
* @throws IllegalStateException this class is immutable!
*/
@Override
public void setCharacterStream(final Reader r) {
throw new IllegalStateException("StringInputSource is immutable");
}
@Override
public InputStream getByteStream() {
if (source.isLeft()) {
return new FastByteArrayInputStream(source.left().get());
} else {
return null;
}
}
/**
* Set a byte stream input.
*
* @param is the input stream.
*
* @throws IllegalStateException this class is immutable!
*/
@Override
public void setByteStream(final InputStream is) {
throw new IllegalStateException("StringInputSource is immutable");
}
}
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