org.jboss.vfs.util.PaddedManifestStream Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source
* Copyright 2009, JBoss Inc., and individual contributors as indicated
* by the @authors tag.
*
* 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 org.jboss.vfs.util;
import java.io.IOException;
import java.io.InputStream;
/**
* Appends a new line char to the stream if it doesn't have one as his last byte.
*
* @author ehsavoie
*/
public class PaddedManifestStream extends InputStream {
private final InputStream realStream;
private int previousChar = -1;
public PaddedManifestStream(InputStream realStream) {
this.realStream = realStream;
}
@Override
public int read() throws IOException {
int value = this.realStream.read();
while(value == '\0') {
value = this.realStream.read();
}
if (value == -1 && previousChar != '\n' && previousChar != -1) {
previousChar = '\n';
return '\n';
}
previousChar = value;
return value;
}
@Override
public void close() throws IOException {
super.close();
realStream.close();
}
}