Wikipedia export schema in Protocol Buffer

mediawiki.proto

syntax = "proto3";
package org.mediawiki.www.xml.export_0_3;

enum CaseType {
  // Default
  CASE_TYPE_UNSPECIFIED = 0;
  CASE_TYPE_FIRST_LETTER = 1;
  CASE_TYPE_CASE_SENSITIVE = 2;
  CASE_TYPE_CASE_INSENSITIVE = 3;
}
message ContributorType {
  string username = 1;
  uint32 id = 2;
  string ip = 3;
}
message MediaWikiType {
  string version = 1;
  string lang = 2;
  SiteInfoType siteinfo = 3;
  repeated PageType page = 4;
}
message NamespaceType {
  int32 key = 1;
  string value = 2;
}
message NamespacesType {
  repeated NamespaceType namespace = 1;
}
message PageType {
  string title = 1;
  uint32 id = 2;
  string restrictions = 3;
  repeated ChoiceWrapper_PageType choice_wrapper = 4;

  message ChoiceWrapper_PageType {
    RevisionType revision = 1;
    UploadType upload = 2;
  }
}
message RevisionType {
  uint32 id = 1;
  uint64 timestamp = 2;
  ContributorType contributor = 3;
  string minor = 4;
  string comment = 5;
  TextType text = 6;
}
message SiteInfoType {
  string sitename = 1;
  string base = 2;
  string generator = 3;
  CaseType case_field = 4;
  NamespacesType namespaces = 5;
}
enum SpaceType {
  // Default
  SPACE_TYPE_UNSPECIFIED = 0;
  SPACE_TYPE_DEFAULT = 1;
  SPACE_TYPE_PRESERVE = 2;
}
message TextType {
  SpaceType space = 1;
  string value = 2;
}
message UploadType {
  uint64 timestamp = 1;
  ContributorType contributor = 2;
  string comment = 3;
  string filename = 4;
  string src = 5;
  uint32 size = 6;
}