/* * Copyright (C) 2016 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include <wtf/Forward.h> #include <wtf/Markable.h> namespace WebCore { class ParsedContentRange { public: static constexpr int64_t invalidLength = std::numeric_limits<int64_t>::min(); static constexpr int64_t unknownLength = std::numeric_limits<int64_t>::max(); WEBCORE_EXPORT explicit ParsedContentRange(const String&); WEBCORE_EXPORT ParsedContentRange(int64_t firstBytePosition, int64_t lastBytePosition, int64_t instanceLength); ParsedContentRange() = default; bool isValid() const { return m_instanceLength != invalidLength; } int64_t firstBytePosition() const { return m_firstBytePosition; } int64_t lastBytePosition() const { return m_lastBytePosition; } int64_t instanceLength() const { return m_instanceLength; } static ParsedContentRange invalidValue() { return ParsedContentRange(); } WEBCORE_EXPORT String headerValue() const; struct MarkableTraits { static bool isEmptyValue(const ParsedContentRange& range) { return !range.isValid(); } static ParsedContentRange emptyValue() { return ParsedContentRange::invalidValue(); } }; private: int64_t m_firstBytePosition { 0 }; int64_t m_lastBytePosition { 0 }; int64_t m_instanceLength { invalidLength }; }; }