/* $Id$ */
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.manifoldcf.connectorcommon.fuzzyml;
import org.apache.manifoldcf.core.interfaces.*;
import java.io.*;
/** This interface represents a receiver for a sequence of individual characters.
*/
public abstract class SingleCharacterReceiver extends CharacterReceiver
{
protected final char[] charBuffer;
/** Constructor.
*/
public SingleCharacterReceiver(int chunkSize)
{
charBuffer = new char[chunkSize];
}
/** Receive a stream of characters.
*@return true if abort signalled, false if end of stream.
*/
@Override
public final boolean dealWithCharacters(Reader reader)
throws IOException, ManifoldCFException
{
while (true)
{
int amt = reader.read(charBuffer);
if (amt == -1)
return false;
for (int i = 0; i < amt; i++)
{
if (dealWithCharacter(charBuffer[i]))
{
return dealWithRemainder(charBuffer, i+1, amt-(i+1), reader);
}
}
}
}
/** Receive a byte.
* @return true if done.
*/
public abstract boolean dealWithCharacter(char c)
throws IOException, ManifoldCFException;
/** Deal with the remainder of the input.
* This is called only when dealWithCharacter() returns true.
*@param buffer is the buffer of characters that should come first.
*@param offset is the offset within the buffer of the first character.
*@param len is the number of characters in the buffer.
*@param inputStream is the stream that should come after the characters in the buffer.
*@return true to abort, false if the end of the stream has been reached.
*/
protected boolean dealWithRemainder(char[] buffer, int offset, int len, Reader reader)
throws IOException, ManifoldCFException
{
return true;
}
}