/*
 * 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
 *
 * https://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.avro.file;

import java.io.ByteArrayInputStream;
import java.io.EOFException;
import java.io.IOException;

/** A {@link SeekableInput} backed with data in a byte array. */
public class SeekableByteArrayInput extends ByteArrayInputStream implements SeekableInput {

  public SeekableByteArrayInput(byte[] data) {
    super(data);
  }

  @Override
  public long length() throws IOException {
    return this.count;
  }

  @Override
  public void seek(long p) throws IOException {
    if (p >= this.count) {
      throw new EOFException();
    }
    if (p >= 0) {
      this.pos = (int) p;
    }
  }

  @Override
  public long tell() throws IOException {
    return this.pos;
  }
}
