sgmlseventhandler.cxx

SP是一个基于GNU C++编译器

void SgmlsEventHandler::startAttribute(const StringC &name,
				       char code,
				       const StringC *ownerName)
{
  os() << code;
  if (ownerName)
    os() << *ownerName << space;
  os() << name << space;
}

void SgmlsEventHandler::endElement(EndElementEvent *event)
{
  flushData();
  if (haveLinkProcess_)
    linkProcess_.endElement();
  outputLocation(event->location());
  os() << endElementCode << event->name() << nl;
  delete event;
}

void SgmlsEventHandler::externalDataEntity(ExternalDataEntityEvent *event)
{
  currentLocation_ = event->location();
  outputLocation(event->location());
  flushData();
  if (!outputEntity_ && !markEntity(event->entity()))
    defineExternalDataEntity(event->entity());
  currentLocation_.clear();
  os() << referenceEntityCode << event->entity()->name() << nl;
  delete event;
}

void SgmlsEventHandler::subdocEntity(SubdocEntityEvent *event)
{
  currentLocation_ = event->location();
  outputLocation(event->location());
  flushData();
  const SubdocEntity *entity = event->entity();
  if (!outputEntity_ && !markEntity(entity))
    defineSubdocEntity(entity);
  currentLocation_.clear();
  os() << startSubdocCode << entity->name() << nl;
  SgmlParser::Params params;
  params.subdocInheritActiveLinkTypes = 1;
  params.subdocReferenced = 1;
  params.origin = event->entityOrigin()->copy();
  params.parent = parser_;
  params.sysid = entity->externalId().effectiveSystemId();
  params.entityType = SgmlParser::Params::subdoc;
  SgmlParser parser(params);
  SgmlsSubdocState oldState;
  SgmlsSubdocState::swap(oldState);
  SgmlsSubdocState::init(&parser);
  parser.parseAll(*this);
  oldState.swap(*this);
  os() << endSubdocCode << entity->name() << nl;
  delete event;
}

void SgmlsEventHandler::defineEntity(const Entity *entity)
{
  const InternalEntity *internalEntity = entity->asInternalEntity();
  if (internalEntity)
    defineInternalEntity(internalEntity);
  else {
    switch (entity->dataType()) {
    case Entity::cdata:
    case Entity::sdata:
    case Entity::ndata:
      defineExternalDataEntity(entity->asExternalDataEntity());
      break;
    case Entity::subdoc:
      defineSubdocEntity(entity->asSubdocEntity());
      break;
    case Entity::sgmlText:
      defineExternalTextEntity(entity->asExternalEntity());
      break;
    default:
      CANNOT_HAPPEN();
    }
  }
}

void SgmlsEventHandler::defineExternalDataEntity(const ExternalDataEntity *entity)
{
  const Notation *notation = entity->notation();
  defineNotation(notation);
  externalId(entity->externalId());
  const char *typeString;
  switch (entity->dataType()) {
  case Entity::cdata:
    typeString = "CDATA";
    break;
  case Entity::sdata:
    typeString = "SDATA";
    break;
  case Entity::ndata:
    typeString = "NDATA";
    break;
  default:
    CANNOT_HAPPEN();
  }
  os() << defineExternalEntityCode << entity->name()
       << space << typeString
       << space << notation->name()
       << nl;
  attributes(entity->attributes(), dataAttributeCode, &entity->name());
}

void SgmlsEventHandler::defineSubdocEntity(const SubdocEntity *entity)
{
  externalId(entity->externalId());
  os() << defineSubdocEntityCode << entity->name() << nl;
}

void SgmlsEventHandler::defineExternalTextEntity(const ExternalEntity *entity)
{
  externalId(entity->externalId());
  os() << defineExternalTextEntityCode << entity->name() << nl;
}

void SgmlsEventHandler::defineInternalEntity(const InternalEntity *entity)
{
  os() << defineInternalEntityCode << entity->name() << space;
  const char *s;
  switch (entity->dataType()) {
  case Entity::sdata:
    s = "SDATA";
    break;
  case Entity::cdata:
    s = "CDATA";
    break;
  case Entity::sgmlText:
    s = "TEXT";
    break;
  case Entity::pi:
    s = "PI";
    break;
  default:
    CANNOT_HAPPEN();
  }
  os() << s << space;
  outputString(entity->string());
  os() << nl;
}

void SgmlsEventHandler::defineNotation(const Notation *notation)
{
  if (markNotation(notation))
    return;
  externalId(notation->externalId(), outputNotationSysid_);
  os() << defineNotationCode << notation->name() << nl;
}

void SgmlsEventHandler::externalId(const ExternalId &id, Boolean outputFile)
{
  const StringC *str = id.publicIdString();
  if (str) {
    os() << pubidCode;
    outputString(*str);
    os() << nl;
  }
  str = id.systemIdString();
  if (str) {
    os() << sysidCode;
    outputString(*str);
    os() << nl;
  }
  if (outputFile && id.effectiveSystemId().size()) {
    os() << fileCode;
    outputString(id.effectiveSystemId());
    os() << nl;
  }
}

Boolean SgmlsEventHandler::markEntity(const Entity *entity)
{
  return definedEntities_.add(entity->name());
}

Boolean SgmlsEventHandler::markNotation(const Notation *notation)
{
  return definedNotations_.add(notation->name());
}

void SgmlsEventHandler::outputString(const Char *p, size_t n)
{
  for (; n > 0; p++, n--) {
    switch (*p) {
    case '\\':			// FIXME we're punning Chars and chars
      os() << "\\\\";
      break;
    case re:
      os() << "\\n";
      if (outputLine_ && haveData_)
	lastLineno_++;
      break;
    default:
      // FIXME not clear what to do here given possibility of wide characters
      if (*p < 040) {
	static const char digits[] = "0123456789";
	os() << "\\0" << digits[*p / 8] << digits[*p % 8];
      }
      else
	os().put(*p);
      break;
    }
  }
}

void SgmlsEventHandler::escape(OutputCharStream &s, Char c)
{
  s << "\\#" << (unsigned long)c << ";";
}

void SgmlsEventHandler::outputLocation1(const Location &loc)
{
  const Origin *origin = loc.origin().pointer();
  const InputSourceOrigin *inputSourceOrigin;
  const ExternalInfo *info;
  Index index = loc.index();
  for (;;) {
    if (!origin)
      return;
    inputSourceOrigin = origin->asInputSourceOrigin();
    if (inputSourceOrigin) {
      info = inputSourceOrigin->externalInfo();
      if (info)
	break;
    }
    const Location &loc = origin->parent();
    index = loc.index();
    origin = loc.origin().pointer();
  }
  Offset off = inputSourceOrigin->startOffset(index);
  StorageObjectLocation soLoc;
  if (!ExtendEntityManager::externalize(info, off, soLoc))
    return;
  if (soLoc.lineNumber == (unsigned long)-1)
    return;
  if (soLoc.storageObjectSpec == lastSos_) {
    if (soLoc.lineNumber == lastLineno_)
      return;
    flushData();
    os() << locationCode << soLoc.lineNumber << nl;
    lastLineno_ = soLoc.lineNumber;
  }
  else {
    flushData();
    os() << locationCode << soLoc.lineNumber << space;
    outputString(soLoc.actualStorageId);
    os() << nl;
    lastLineno_ = soLoc.lineNumber;
    lastSos_ = soLoc.storageObjectSpec;
    lastLoc_ = loc;		// make sure lastSos_ doesn't get freed
  }
}

void SgmlsEventHandler::dispatchMessage(const Message &msg)
{
  if (!cancelled()) {
    noteMessage(msg);
    messenger_->dispatchMessage(msg);
  }
}

void SgmlsEventHandler::initMessage(Message &msg)
{
  msg.loc = currentLocation_;
}

SgmlsSubdocState::SgmlsSubdocState()
: haveLinkProcess_(0), parser_(0)
{
}

SgmlsSubdocState::SgmlsSubdocState(const SgmlParser *parser)
: haveLinkProcess_(0), parser_(parser)
{
}

void SgmlsSubdocState::init(const SgmlParser *parser)
{
  parser_ = parser;
  definedNotations_.clear();
  definedEntities_.clear();
  haveLinkProcess_ = 0;
  linkProcess_.clear();
}

void SgmlsSubdocState::swap(SgmlsSubdocState &to)
{
  {
    const SgmlParser *tem = to.parser_;
    to.parser_ = parser_;
    parser_ = tem;
  }
  {
    Boolean tem = to.haveLinkProcess_;
    to.haveLinkProcess_ = haveLinkProcess_;
    haveLinkProcess_ = tem;
  }
  linkProcess_.swap(to.linkProcess_);
  definedNotations_.swap(to.definedNotations_);
  definedEntities_.swap(to.definedEntities_);
}

#ifdef SP_NAMESPACE
}
#endif