net.sandius.rembulan.lib.impl.io.OutputStreamIoFile Maven / Gradle / Ivy
/*
* Copyright 2016 Miroslav Janíček
*
* Licensed 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 KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.sandius.rembulan.lib.impl.io;
import net.sandius.rembulan.ByteString;
import net.sandius.rembulan.Table;
import net.sandius.rembulan.lib.impl.IoFile;
import net.sandius.rembulan.util.Check;
import java.io.IOException;
import java.io.OutputStream;
public class OutputStreamIoFile extends IoFile {
private final SeekableOutputStream out;
public OutputStreamIoFile(OutputStream out, Table metatable, Object userValue) {
super(metatable, userValue);
this.out = new SeekableOutputStream(Check.notNull(out));
}
@Override
public boolean isClosed() {
return false;
}
@Override
public void close() throws IOException {
throw new UnsupportedOperationException("cannot close standard file");
}
@Override
public void flush() throws IOException {
out.flush();
}
@Override
public void write(ByteString s) throws IOException {
s.writeTo(out);
}
@Override
public long seek(IoFile.Whence whence, long offset) throws IOException {
switch (whence) {
case BEGINNING:
case END:
return out.setPosition(offset);
case CURRENT_POSITION:
return out.addPosition(offset);
default: throw new IllegalArgumentException("Illegal whence: " + whence);
}
}
}