helper_functions.hpp

// SPDX-License-Identifier: GPL-2.0-or-later
 
#ifndef HELPER_FUNCTIONS_HPP
#define HELPER_FUNCTIONS_HPP
 
#include <string>
#include "basicio.hpp"
#include "types.hpp"
std::string string_from_unterminated(const char* data, size_t data_length);
 
namespace Exiv2 {
 
static constexpr size_t BYTE = 0x1;
static constexpr size_t WCHAR = 0x2;
static constexpr size_t WORD = 0X2;
static constexpr size_t DWORD = 0x4;
static constexpr size_t QWORD = 0x8;
static constexpr size_t GUID = 0x10;
 
[[nodiscard]] uint64_t readQWORDTag(const Exiv2::BasicIo::UniquePtr& io);
 
[[nodiscard]] uint32_t readDWORDTag(const Exiv2::BasicIo::UniquePtr& io);
 
[[nodiscard]] uint16_t readWORDTag(const Exiv2::BasicIo::UniquePtr& io);
 
[[nodiscard]] std::string readStringWcharTag(const Exiv2::BasicIo::UniquePtr& io, size_t length);
 
[[nodiscard]] std::string readStringTag(const Exiv2::BasicIo::UniquePtr& io, size_t length = DWORD);

[[nodiscard]] std::string getAspectRatio(uint64_t width, uint64_t height);
 
}  // namespace Exiv2
#endif  // HELPER_FUNCTIONS_HPP