C++ NameList::clear方法代码示例

IECore::ConstInternedStringVectorDataPtr SceneReader::computeChildNames( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
	ConstSceneInterfacePtr s = scene( path );
	if( !s )
	{
		return parent->childNamesPlug()->defaultValue();
	}

	// get the child names
	
	InternedStringVectorDataPtr resultData = new InternedStringVectorData;
	vector<InternedString> &result = resultData->writable();
	s->childNames( result );
	
	// filter out any which don't have the right tags
	
	std::string tagsString = tagsPlug()->getValue();
	if( !tagsString.empty() )
	{
		typedef boost::tokenizer<boost::char_separator<char> > Tokenizer;
		Tokenizer tagsTokenizer( tagsString, boost::char_separator<char>( " " ) );
		
		vector<InternedString> tags;
		std::copy( tagsTokenizer.begin(), tagsTokenizer.end(), back_inserter( tags ) );
		
		vector<InternedString>::iterator newResultEnd = result.begin();
		SceneInterface::NameList childTags;
		for( vector<InternedString>::const_iterator cIt = result.begin(), cEIt = result.end(); cIt != cEIt; ++cIt )
		{
			ConstSceneInterfacePtr child = s->child( *cIt );
			childTags.clear();
			child->readTags( childTags, IECore::SceneInterface::EveryTag );
			
			bool childMatches = false;
			for( SceneInterface::NameList::const_iterator tIt = childTags.begin(), tEIt = childTags.end(); tIt != tEIt; ++tIt )
			{
				if( find( tags.begin(), tags.end(), *tIt ) != tags.end() )
				{
					childMatches = true;
					break;
				}
			}
		
			if( childMatches )
			{
				*newResultEnd++ = *cIt;
			}
		}
		
		result.erase( newResultEnd, result.end() );
	}
	
	return resultData;
}

IECore::ConstCompoundObjectPtr SceneReader::computeAttributes( const ScenePath &path, const Gaffer::Context *context, const ScenePlug *parent ) const
{
	std::string fileName = fileNamePlug()->getValue();
	if( !fileName.size() )
	{
		return parent->attributesPlug()->defaultValue();
	}
	
	ConstSceneInterfacePtr s = SharedSceneInterfaces::get( fileName );
	s = s->scene( path );
	
	// read attributes
	
	SceneInterface::NameList nameList;
	s->attributeNames( nameList );
	
	CompoundObjectPtr result = new CompoundObject;
	
	for( SceneInterface::NameList::iterator it = nameList.begin(); it != nameList.end(); ++it )
	{
		// these internal attributes should be ignored:
		if( *it == SceneCache::animatedObjectTopologyAttribute )
		{
			continue;
		}
		if( *it == SceneCache::animatedObjectPrimVarsAttribute )
		{
			continue;
		}
		
		// the const cast is ok, because we're only using it to put the object into a CompoundObject that will
		// be treated as forever const after being returned from this function.
		result->members()[ std::string( *it ) ] = constPointerCast<Object>( s->readAttribute( *it, context->getFrame() / g_frameRate ) );
	}

	// read tags and turn them into attributes of the form "user:tag:tagName"
	
	nameList.clear();
	s->readTags( nameList, IECore::SceneInterface::LocalTag );
	for( SceneInterface::NameList::const_iterator it = nameList.begin(); it != nameList.end(); ++it )
	{
		if( it->string().compare( 0, 11, "ObjectType:" ) == 0 )
		{
			continue;
		}
		result->members()["user:tag:"+it->string()] = g_trueBoolData;
	}

	return result;
}