exiv2/samples/xmpdump.cpp

// SPDX-License-Identifier: GPL-2.0-or-later
// Sample program to dump the XMP packet of an image

#include <exiv2/exiv2.hpp>
#include <iostream>

int main(int argc, char* const argv[])
{
    Exiv2::XmpParser::initialize();
    ::atexit(Exiv2::XmpParser::terminate);
#ifdef EXV_ENABLE_BMFF
    Exiv2::enableBMFF();
#endif

    try {
        if (argc != 2) {
            std::cout << "Usage: " << argv[0] << " file\n";
            return 1;
        }

        auto image = Exiv2::ImageFactory::open(argv[1]);
        image->readMetadata();

        const std::string& xmpPacket = image->xmpPacket();
        if (xmpPacket.empty()) {
            std::string error(argv[1]);
            error += ": No XMP packet found in the file";
            throw Exiv2::Error(Exiv2::ErrorCode::kerErrorMessage, error);
        }
        std::cout << xmpPacket << "\n";

        return 0;
    } catch (Exiv2::Error& e) {
        std::cout << "Caught Exiv2 exception '" << e << "'\n";
        return -1;
    }
}