/**
* Copyright (C) 2012-2013 Selventa, Inc.
*
* This file is part of the OpenBEL Framework.
*
* 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 3 of the License, or
* (at your option) any later version.
*
* The OpenBEL Framework 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 the OpenBEL Framework. If not, see <http://www.gnu.org/licenses/>.
*
* Additional Terms under LGPL v3:
*
* This license does not authorize you and you are prohibited from using the
* name, trademarks, service marks, logos or similar indicia of Selventa, Inc.,
* or, in the discretion of other licensors or authors of the program, the
* name, trademarks, service marks, logos or similar indicia of such authors or
* licensors, in any marketing or advertising materials relating to your
* distribution of the program or any covered product. This restriction does
* not waive or limit your obligation to keep intact all copyright notices set
* forth in the program as delivered to you.
*
* If you distribute the program in whole or in part, or any modified version
* of the program, and you assume contractual liability to the recipient with
* respect to the program or modified version, then you will indemnify the
* authors and licensors of the program for any liabilities that these
* contractual assumptions directly impose on those licensors and authors.
*/
package org.openbel.framework.common;
import java.io.PrintStream;
/**
* Prints errors and warnings via direct hand-off to the underlying streams.
* <p>
* <ol>
* <li>Warnings will be printed with the line prefix {@code WARNING: }.</li>
* <li>Errors will be printed with the line prefix {@code ERROR: }.</li>
* </ol>
* </p>
*
*/
public final class SimpleOutput implements Reportable {
/* Output stream - may be null. */
private PrintStream outputstream;
/* Error stream - may be null. */
private PrintStream errorstream;
/**
* Creates a simple output.
*/
public SimpleOutput() {
}
/**
* Sets the stream that receives normal output.
*
* @param stream {@link PrintStream}
*/
public void setOutputStream(PrintStream stream) {
this.outputstream = stream;
}
/**
* Sets the stream that receives errors and warnings.
*
* @param stream {@link PrintStream}
*/
public void setErrorStream(final PrintStream stream) {
this.errorstream = stream;
}
/**
* {@inheritDoc}
*/
@Override
public PrintStream errorStream() {
return errorstream;
}
/**
* {@inheritDoc}
*/
@Override
public PrintStream outputStream() {
return outputstream;
}
/**
* {@inheritDoc}
*/
@Override
public void error(String... errors) {
if (errors == null) return;
if (errorstream == null) return;
for (final String err : errors) {
if (err == null) continue;
errorstream.println(err);
}
}
/**
* {@inheritDoc}
*/
@Override
public void warning(String... warnings) {
if (warnings == null) return;
if (errorstream == null) return;
for (final String warning : warnings) {
if (warning == null) continue;
errorstream.println(warning);
}
}
/**
* {@inheritDoc}
*/
@Override
public void output(String... outputs) {
if (outputs == null) return;
if (outputstream == null) return;
for (final String output : outputs) {
if (output == null) continue;
outputstream.println(output);
}
}
}