// ===========================================================================
// Copyright 2018 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk license
// agreement provided at the time of installation or download, or which
// otherwise accompanies this software in either electronic or hard copy form.
// ===========================================================================
// This is a simple function to return the first
// node connected to by an attribute, returning
// an empty string if there is no connection.

global proc string sourceNodeNameFromConnection( string $dest )
{
	string $outStr = "";
	string $con = `connectionInfo -sfd $dest`;

	// There is likely a more efficient way of doing
	// this than the following tokenization.
	if( size( $con ) > 0 ){
		string $buffer[];
		int $numTokens = `tokenize $con "." $buffer`;
		if( $numTokens > 1 ){
			$outStr =  $buffer[0];
		}
	}
	return $outStr;
}