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/*
* JBoss DNA (http://www.jboss.org/dna)
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
* See the AUTHORS.txt file in the distribution for a full listing of
* individual contributors.
*
* JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
* is licensed to you under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* JBoss DNA 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
/**
* @author Randall Hauch
*/
public class Main {
/**
* Write the entire contents of the supplied string to the given writer. This method always flushes and closes the writer when
* finished.
*
* @param input the content to write to the writer; may be null
* @param writer the writer to which the content is to be written
* @throws IOException
* @throws IllegalArgumentException if the writer is null
*/
public static void write( Reader input,
Writer writer ) throws IOException {
boolean error = false;
try {
if (input != null) {
char[] buffer = new char[1024];
try {
int numRead = 0;
while ((numRead = input.read(buffer)) > -1) {
writer.write(buffer, 0, numRead);
}
} finally {
input.close();
}
}
} catch (IOException e) {
error = true; // this error should be thrown, even if there is an error flushing/closing writer
throw e;
} catch (RuntimeException e) {
error = true; // this error should be thrown, even if there is an error flushing/closing writer
throw e;
} finally {
try {
writer.flush();
} catch (IOException e) {
if (!error) throw e;
} finally {
try {
writer.close();
} catch (IOException e) {
if (!error) throw e;
}
}
}
}
}
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