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#ifndef WANDA_SYSTEM_MAGIC_HPP
#define WANDA_SYSTEM_MAGIC_HPP
#include <magic.h>
#include <filesystem>
#include <memory>
#include <string>
#include <type_traits>
namespace wanda::system
{
struct magic
{
struct closer
{
auto operator()(magic_t handle) const noexcept -> void
{
magic_close(handle);
}
};
enum struct mime_type
{
unknown,
image_jpeg,
image_png,
};
magic()
: m_handle{magic_open(MAGIC_MIME_TYPE)}
{
magic_load(m_handle.get(), nullptr);
}
auto type(std::filesystem::path path) -> mime_type
{
auto magic_type = std::string{magic_file(m_handle.get(), path.native().c_str())};
if (magic_type == "image/jpeg")
{
return mime_type::image_jpeg;
}
else if (magic_type == "image/png")
{
return mime_type::image_png;
}
return mime_type::unknown;
}
private:
std::unique_ptr<std::remove_pointer_t<magic_t>, closer> m_handle;
};
} // namespace wanda::system
#endif
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