new_contents: ##########################################################################
  #
  #  Copyright (c) 2016, Image Engine Design Inc. All rights reserved.
  #
  #  Redistribution and use in source and binary forms, with or without
  #  modification, are permitted provided that the following conditions are
  #  met:
  #
  #      * Redistributions of source code must retain the above
  #        copyright notice, this list of conditions and the following
  #        disclaimer.
  #
  #      * Redistributions in binary form must reproduce the above
  #        copyright notice, this list of conditions and the following
  #        disclaimer in the documentation and/or other materials provided with
  #        the distribution.
  #
  #      * Neither the name of John Haddon nor the names of
  #        any other contributors to this software may be used to endorse or
  #        promote products derived from this software without specific prior
  #        written permission.
  #
  #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  #  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  #  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  #  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  #  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  #  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  #  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  #  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  #  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  #  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  #  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  ##########################################################################
  
  import os
  import collections
  
  import IECore
  
  import Gaffer
  
  class stats( Gaffer.Application ) :
  
  	def __init__( self ) :
  
  		Gaffer.Application.__init__( self )
  
  		self.parameters().addParameters(
  
  			[
  				IECore.FileNameParameter(
  					name = "script",
  					description = "The script to examine.",
  					defaultValue = "",
  					allowEmptyString = False,
  					extensions = "gfr",
  					check = IECore.FileNameParameter.CheckType.MustExist,
  				),
  
  			]
  
  		)
  
  		self.parameters().userData()["parser"] = IECore.CompoundObject(
  			{
  				"flagless" : IECore.StringVectorData( [ "script" ] )
  			}
  		)
  
  	def _run( self, args ) :
  
  		script = Gaffer.ScriptNode()
  		script["fileName"].setValue( os.path.abspath( args["script"].value ) )
  		script.load( continueOnError = True )
  
  		self.__printVersion( script )
  
  		print ""
  
  		self.__printSettings( script )
  
  		print ""
  
  		self.__printVariables( script )
  
  		print ""
  
  		self.__printNodes( script )
  
  	def __printVersion( self, script ) :
  
  		numbers = [ Gaffer.Metadata.nodeValue( script, "serialiser:" + x + "Version" ) for x in ( "milestone", "major", "minor", "patch" ) ]
  		if None not in numbers :
  			version = ".".join( str( x ) for x in numbers )
  		else :
  			version = "unknown"
  
  		print "Gaffer Version : {version}".format( version = version )
  
  	def __printItems( self, items ) :
  
  		width = max( [ len( x[0] ) for x in items ] ) + 4
  		for name, value in items :
  			print "  {name:<{width}}{value}".format( name = name, width = width, value = value )
  
  	def __printSettings( self, script ) :
  
  		plugsToIgnore = {
  			script["fileName"],
  			script["unsavedChanges"],
  			script["variables"],
  		}
  
  		items = []
  		def itemsWalk( p ) :
  
  			if p in plugsToIgnore :
  				return
  
  			if hasattr( p, "getValue" ) :
  				items.append( ( p.relativeName( script ), p.getValue() ) )
  			else :
  				for c in p.children( Gaffer.Plug ) :
  					itemsWalk( c )
  
  		itemsWalk( script )
  
  		print "Settings :\n"
  		self.__printItems( items )
  
  	def __printVariables( self, script ) :
  
  		items = []
  		for p in script["variables"] :
  			data, name = script["variables"].memberDataAndName( p )
  			if data is not None :
  				items.append( ( name, data ) )
  
  		print "Variables :\n"
  		self.__printItems( items )
  
  	def __printNodes( self, script ) :
  
  		def countWalk( node, counter ) :
  
  			if not isinstance( node, Gaffer.ScriptNode ) :
  				counter[node.typeName()] += 1
  
  			for c in node.children( Gaffer.Node ) :
  				countWalk( c, counter )
  
  		counter = collections.Counter()
  		countWalk( script, counter )
  
  		items = [ ( nodeType.rpartition( ":" )[2], count ) for nodeType, count in counter.most_common() ]
  		items.extend( [
  			( "", "" ),
  			( "Total", sum( counter.values() ) ),
  		] )
  
  		print "Nodes :\n"
  		self.__printItems( items )
  
  IECore.registerRunTimeTyped( stats )
  
subject: Add stats application