image_file_probe.hpp

// SPDX-License-Identifier: LGPL-2.1-or-later
 
#pragma once
 
#include <vitrio/byte.hpp>
#include <vitrio/export.hpp>
#include <vitrio/span.hpp>
 
#include <cstddef>
#include <string>
#include <vector>
 
namespace vitrio
{
 
class image_file_probe
{
public:
    VITRIO_API
    static constexpr std::size_t max_leading_bytes = 4096;
 
    VITRIO_API
    explicit image_file_probe(std::string path);
 
    VITRIO_API
    image_file_probe(const image_file_probe &other);
    VITRIO_API
    image_file_probe(image_file_probe &&other) noexcept;
    VITRIO_API
    ~image_file_probe();
 
    VITRIO_API
    image_file_probe& operator=(const image_file_probe &other);
    VITRIO_API
    image_file_probe& operator=(image_file_probe &&other) noexcept;
 
    VITRIO_API
    const std::string& get_path() const noexcept;
 
    VITRIO_API
    const std::string& get_extension() const noexcept;
 
    VITRIO_API
    span<const byte> get_leading_bytes() const noexcept;
 
    VITRIO_API
    bool exists() const noexcept;
 
private:
    std::string m_path;
    std::string m_extension;
    std::vector<byte> m_leading_bytes;
    bool m_exists;
};
 
} // namespace vitrio