Function dicomDataSetToAttributeNode

src/imageio/DicomImageLoader.cpp:380–422

}

AttributeNode dicomDataSetToAttributeNode(const gdcm::DataSet& ds, string_view nodeName) {
    AttributeNode result;
    result.name = nodeName;

    for (auto it = ds.Begin(); it != ds.End(); ++it) {
        const gdcm::DataElement& de = *it;
        const gdcm::Tag& tag = de.GetTag();

        // Skip group-length elements; they're structural and carry no user-facing meaning.
        if (tag.GetElement() == 0x0000) {
            continue;
        }

        const gdcm::VR::VRType vr = de.GetVR();

        if (vr == gdcm::VR::SQ || (de.GetValueAsSQ() && de.GetVR() == gdcm::VR::INVALID)) {
            auto seqNode = dicomSequenceToAttributeNode(de, dicomTagName(tag));
            if (!seqNode.children.empty() || !seqNode.value.empty()) {
                result.children.emplace_back(std::move(seqNode));
            }

            continue;
        }

        ostringstream oss;
        if (!de.IsEmpty()) {
            de.GetValue().Print(oss);
        } else {
            oss << "n/a";
        }

        result.children.emplace_back(
            AttributeNode{
                .name = dicomTagName(tag),
                .value = std::move(oss).str(),
                .type = dicomVrToString(vr),
                .children = {},
            }
        );
    }

    return result;
}

struct DicomImageData {
    ImageData imageData;