Function proj_get_id_code

src/iso19111/c_api.cpp:1591–1604

\brief Get the code of an identifier of an object. * * The lifetime of the returned string is the same as the input obj parameter. * * @param obj Object (must not be NULL) * @param index Index of the identifier. 0 = first identifier * @return a string, or NULL in case of error or missing name. */

 * @return a string, or NULL in case of error or missing name.
 */
const char *proj_get_id_code(const PJ *obj, int index) {
    if (!obj) {
        return nullptr;
    }
    auto identifiedObj = dynamic_cast<IdentifiedObject *>(obj->iso_obj.get());
    if (!identifiedObj) {
        return nullptr;
    }
    const auto &ids = identifiedObj->identifiers();
    if (static_cast<size_t>(index) >= ids.size()) {
        return nullptr;
    }
    return ids[index]->code().c_str();
}

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