/*
 * Copyright 2016 Miroslav Janíček
 *
 * 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 org.classdump.luna;

import java.io.IOException;
import java.io.InputStream;
import org.classdump.luna.util.ByteIterator;

class ByteStringInputStream extends InputStream {

  private final ByteIterator iterator;

  public ByteStringInputStream(ByteIterator iterator) {
    this.iterator = iterator;
  }

  @Override
  public int read() throws IOException {
    return !iterator.hasNext() ? -1 : iterator.nextByte() & 0xff;
  }

  // TODO implement more efficient version
  @Override
  public int read(byte[] b, int off, int len) throws IOException {
    return super.read(b, off, len);
  }
}
