/*
* JAVE - A Java Audio/Video Encoder (based on FFMPEG)
*
* Copyright (C) 2008-2009 Carlo Pelliccia (www.sauronsoftware.it)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package it.sauronsoftware.jave;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
/**
* A package-private utility extending java.io.BufferedReader. If a line read
* with {@link RBufferedReader#readLine()} is not useful for the calling code,
* it can be re-inserted in the stream. The same line will be returned again at
* the next readLine() call.
*
* @author Carlo Pelliccia
*/
class RBufferedReader extends BufferedReader {
/**
* Re-inserted lines buffer.
*/
private ArrayList lines = new ArrayList();
/**
* It builds the reader.
*
* @param in The underlying reader.
*/
public RBufferedReader( Reader in ) {
super( in );
}
/**
* It returns the next line in the stream.
*/
public String readLine() throws IOException {
if ( lines.size() > 0 ) {
return (String) lines.remove( 0 );
}
else {
return super.readLine();
}
}
/**
* Reinserts a line in the stream. The line will be returned at the next
* {@link RBufferedReader#readLine()} call.
*
* @param line The line.
*/
public void reinsertLine( String line ) {
lines.add( 0, line );
}
}