FileSize.h

Go to the documentation of this file.

 
#pragma once
#include "Casting.h"
#include <iosfwd>
#include <stdint.h>
 
namespace catapult { namespace utils {
 
    class FileSize final {
    private:
        constexpr explicit FileSize(uint64_t bytes) : m_bytes(bytes)
        {}
 
    public:
        constexpr FileSize() : FileSize(0)
        {}
 
    public:
        static constexpr FileSize FromMegabytes(uint64_t megabytes) {
            return FromKilobytes(megabytes * 1024);
        }
 
        static constexpr FileSize FromKilobytes(uint64_t kilobytes) {
            return FromBytes(kilobytes * 1024);
        }
 
        static constexpr FileSize FromBytes(uint64_t bytes) {
            return FileSize(bytes);
        }
 
    public:
        constexpr uint64_t megabytes() const {
            return kilobytes() / 1024;
        }
 
        constexpr uint64_t kilobytes() const {
            return bytes() / 1024;
        }
 
        constexpr uint64_t bytes() const {
            return m_bytes;
        }
 
        uint32_t bytes32() const {
            return checked_cast<uint64_t, uint32_t>(m_bytes);
        }
 
    public:
        constexpr bool operator==(const FileSize& rhs) const {
            return m_bytes == rhs.m_bytes;
        }
 
        constexpr bool operator!=(const FileSize& rhs) const {
            return !(*this == rhs);
        }
 
        constexpr bool operator>=(const FileSize& rhs) const {
            return m_bytes >= rhs.m_bytes;
        }
 
        constexpr bool operator>(const FileSize& rhs) const {
            return m_bytes > rhs.m_bytes;
        }
 
        constexpr bool operator<=(const FileSize& rhs) const {
            return m_bytes <= rhs.m_bytes;
        }
 
        constexpr bool operator<(const FileSize& rhs) const {
            return m_bytes < rhs.m_bytes;
        }
 
    private:
        uint64_t m_bytes;
    };
 
    std::ostream& operator<<(std::ostream& out, const FileSize& fileSize);
}}