test/org/apache/pig/test/FakeFSInputStream.java

/*
 * 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.pig.test;

import java.io.IOException;
import java.io.InputStream;

public class FakeFSInputStream extends InputStream {

    private byte data[];
    private long off;

    public FakeFSInputStream(byte[] buf) {
        data = buf;
    }

    public long getPos() throws IOException {
        return off;
    }

    public void seek(long arg0) throws IOException {
        if (arg0 > data.length - 1) {
            arg0 = data.length - 1;
        }
        off = arg0;
    }

    @Override
    public int read() throws IOException {
        if (off >= data.length) {
            return -1;
        } else {
            return data[(int) off++];
        }
    }
}