plugins/slice/ContentRange.h

/** @file
  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.
 */

#pragma once

#include "ts/ts.h"

/**
  represents value parsed from a blocked Content-Range response header field.
  Range is converted from closed range into a half open range for.
 */
struct ContentRange {
  int64_t m_beg{-1};
  int64_t m_end{-1};    // half open
  int64_t m_length{-1}; // full content length

  ContentRange() {}
  explicit ContentRange(int64_t const begin, int64_t const end, int64_t const len) : m_beg(begin), m_end(end), m_length(len) {}

  bool
  isValid() const
  {
    return 0 <= m_beg && m_beg < m_end && m_end <= m_length;
  }

  /** parsed from a Content-Range field
   * Must be null terminated.
   */
  bool fromStringClosed(char const *const valstr);

  /** usable for Content-Range field
   */
  bool toStringClosed(char *const rangestr, int *const rangelen) const;

  int64_t
  rangeSize() const
  {
    return m_end - m_beg;
  }
};