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#ifndef CABINET_MAGIC_HPP
#define CABINET_MAGIC_HPP
#include <magic.h>
#include <cstddef>
#include <expected>
#include <filesystem>
#include <span>
#include <string>
#include <string_view>
#include <system_error>
#include <utility>
namespace cab
{
struct magic
{
enum struct flags : decltype(MAGIC_NONE)
{
none = MAGIC_NONE,
print_debug = MAGIC_DEBUG,
follow_symlinks = MAGIC_SYMLINK,
inspect_compressed = MAGIC_COMPRESS,
inspect_devices = MAGIC_DEVICES,
mime_type = MAGIC_MIME_TYPE,
mime_encoding = MAGIC_MIME_ENCODING,
mime = MAGIC_MIME,
all_matches = MAGIC_CONTINUE,
check_database = MAGIC_CHECK,
preserve_access_time = MAGIC_PRESERVE_ATIME,
raw = MAGIC_RAW,
forward_errors = MAGIC_ERROR,
apple = MAGIC_APPLE,
extensions = MAGIC_EXTENSION,
transparent_compression = MAGIC_COMPRESS_TRANSP,
emx_dont_check_application_type = MAGIC_NO_CHECK_APPTYPE,
no_elf_details = MAGIC_NO_CHECK_ELF,
no_text_encodings = MAGIC_NO_CHECK_ENCODING,
no_magic_files = MAGIC_NO_CHECK_SOFT,
dont_inspect_tar = MAGIC_NO_CHECK_TAR,
no_text_files = MAGIC_NO_CHECK_TEXT,
no_tokens = MAGIC_NO_CHECK_TOKENS,
no_json = MAGIC_NO_CHECK_JSON,
no_csv = MAGIC_NO_CHECK_CSV,
no_simh = MAGIC_NO_CHECK_SIMH,
};
auto static open(flags flags, std::string_view database = {}) noexcept -> std::expected<magic, std::error_code>;
~magic();
magic(magic const &) = delete;
magic(magic && other) noexcept;
auto operator=(magic const &) -> magic & = delete;
auto operator=(magic && other) noexcept -> magic &;
auto process(std::filesystem::path path) -> std::expected<std::string, std::error_code>;
auto process(int file_descriptor) -> std::expected<std::string, std::error_code>;
auto process(std::span<std::byte> data) -> std::expected<std::string, std::error_code>;
private:
auto handle_result(char const * result) -> std::expected<std::string, std::error_code>;
explicit magic(::magic_t cookie) noexcept;
::magic_t m_cookie{};
};
auto swap(magic & lhs, magic & rhs) noexcept -> void;
constexpr auto operator|(magic::flags lhs, magic::flags rhs) noexcept -> magic::flags
{
return static_cast<magic::flags>(std::to_underlying(lhs) | std::to_underlying(rhs));
}
} // namespace cab
#endif
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