/*
 * Copyright 2018 Google Inc.
 *
 * 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.geometry;

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

/** Utilities for handling {@link InputStream}s. */
final class InputStreams {
  private InputStreams() {}

  /**
   * Reads a byte from {@code input}.
   *
   * @throws IOException if {@code input.read()} throws an {@code IOException} or returns -1 (EOF).
   */
  static byte readByte(InputStream input) throws IOException {
    int result = input.read();
    if (result < 0) {
      throw new IOException("EOF");
    }
    return (byte) (result & 0xFF);
  }
}
