Function printAttributes

tools/src/FileMetadata.cc:92–131

}

void printAttributes(std::ostream& out, const orc::Type& type, const std::string& name,
                     bool* hasAnyAttributes) {
  const auto& attributeKeys = type.getAttributeKeys();
  bool typeHasAttrs = !attributeKeys.empty();
  if (typeHasAttrs) {
    // 'hasAnyAttributes' is only needed to deal with commas properly.
    if (*hasAnyAttributes) {
      out << ',';
    } else {
      *hasAnyAttributes = true;
    }
    out << "\n    \"" << name << "\": {";
  }
  for (uint64_t i = 0; i < attributeKeys.size(); ++i) {
    const auto& key = attributeKeys[i];
    const auto& value = type.getAttributeValue(key);
    out << "\"" << key << "\": \"" << value << "\"";
    if (i < attributeKeys.size() - 1) {
      out << ", ";
    }
  }
  if (typeHasAttrs) {
    out << '}';
  }
  for (uint64_t i = 0; i < type.getSubtypeCount(); ++i) {
    const auto& child = *type.getSubtype(i);
    std::string fieldName;
    if (type.getKind() == orc::STRUCT) {
      fieldName = type.getFieldName(i);
    } else if (type.getKind() == orc::LIST) {
      fieldName = "_elem";
    } else if (type.getKind() == orc::MAP) {
      fieldName = i == 0 ? "_key" : "_value";
    } else {
      fieldName = "_field_" + std::to_string(i);
    }
    std::string childName = (name.empty() ? "" : name + '.') + fieldName;
    printAttributes(out, child, childName, hasAnyAttributes);
  }
}

void printMetadata(std::ostream& out, const char* filename, bool verbose) {
  orc::ReaderOptions readerOpts;