/*
* Copyright (C) 2009 The Guava Authors
*
* 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 com.google.common.io;
import com.google.common.annotations.Beta;
import java.io.IOException;
/**
* A callback interface to process bytes from a stream.
*
* <p>{@link #processBytes} will be called for each line that is read, and
* should return {@code false} when you want to stop processing.
*
* @author Chris Nokleberg
* @since 1.0
*/
@Beta
public interface ByteProcessor<T> {
/**
* This method will be called for each chunk of bytes in an
* input stream. The implementation should process the bytes
* from {@code buf[off]} through {@code buf[off + len - 1]}
* (inclusive).
*
* @param buf the byte array containing the data to process
* @param off the initial offset into the array
* @param len the length of data to be processed
* @return true to continue processing, false to stop
*/
boolean processBytes(byte[] buf, int off, int len) throws IOException;
/** Return the result of processing all the bytes. */
T getResult();
}