/*license*\
XBN-Java Library
Copyright (c) 2014, Jeff Epstein (aliteralmind __DASH__ github __AT__ yahoo __DOT__ com)
This software is dual-licensed under the:
- Lesser General Public License (LGPL) version 3.0 or, at your option, any later version;
- Apache Software License (ASL) version 2.0.
Either license may be applied at your discretion. More information may be found at
- http://en.wikipedia.org/wiki/Multi-licensing.
The text of both licenses is available in the root directory of this project, under the names "LICENSE_lgpl-3.0.txt" and "LICENSE_asl-2.0.txt". The latest copies may be downloaded at:
- LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
- ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
\*license*/
package com.github.xbn.examples.lang.functor;
import java.io.Closeable;
import java.io.Flushable;
import java.io.IOException;
import java.io.Writer;
/**
<p>Obtain the text from a file or web-page, wrap an {@code java.lang.Appendable} into a {@code java.io.Writer}, and other I/O utilities.</p>
<p>{@code java com.github.xbn.examples.lang.functor.WriterForAppendableAnonCls}</p>
@author Copyright (C) 2014, Jeff Epstein, with asistance by Marc Baumbach for {@code newWriterForAppendable(apbl)}. Released under the LPGL 2.1. <a href="http://xbnjava.aliteralmind.com">{@code http://xbnjava.aliteralmind.com}</a>, <a href="https://github.com/aliteralmind/xbnjava">{@code https://github.com/aliteralmind/xbnjava}</a>
**/
public class WriterForAppendableAnonCls extends Writer {
public static final void main(String[] ignored) {
Writer wrtr = new WriterForAppendableAnonCls(System.out);
try {
wrtr.append("hello");
wrtr.close(); //System.out isn't closeable, but let's do it anyway...
} catch(IOException iox) {
throw new RuntimeException(iox);
}
}
private final Appendable apbl;
private final Flushable flshbl;
private final Closeable clsbl;
public WriterForAppendableAnonCls(Appendable apbl) {
if(apbl == null) {
throw new NullPointerException("apbl");
}
this.apbl = apbl;
//Avoids instanceof at every call to flush() and close()
flshbl = ((apbl instanceof Flushable)
? (Flushable)apbl
: new Flushable() {
public void flush() throws IOException {
}
});
clsbl = ((apbl instanceof Closeable)
? (Closeable)apbl
: new Closeable() {
public void close() throws IOException {
}
});
}
@Override
public void write(char[] prim_array, int idx_start, int idx_endX) throws IOException {
apbl.append(String.valueOf(prim_array), idx_start, idx_endX);
}
@Override
public Writer append(char chr) throws IOException {
apbl.append(chr);
return this;
}
@Override
public Writer append(CharSequence text) throws IOException {
apbl.append(text);
return this;
}
@Override
public Writer append(CharSequence text, int idx_start, int idx_endX) throws IOException {
apbl.append(text, idx_start, idx_endX);
return this;
}
@Override
public void flush() throws IOException {
flshbl.flush();
}
@Override
public void close() throws IOException {
flush();
clsbl.close();
}
}