Method doOperation

python/IECore/SequenceLsOp.py:213–388

( self, operands )

	def doOperation( self, operands ) :

		# recursively find sequences
		baseDirectory = operands["dir"].value
		if baseDirectory != "/" and baseDirectory[-1] == '/' :
			baseDirectory = baseDirectory[:-1]

		sequences = IECore.ls( baseDirectory, operands["minSequenceSize"].value )

		# If we've passed in a directory which isn't the current one it is convenient to get that included in the returned sequence names
		relDir = os.path.normpath( baseDirectory ) != "."

		if relDir :
			for s in sequences :
				s.fileName = os.path.join( baseDirectory, s.fileName )

		if operands["recurse"].value :
			# \todo Can safely use os.walk here after Python 2.6, which introduced the followlinks parameter
			for root, dirs, files in IECore.SequenceLsOp.__walk( baseDirectory, topdown = True, followlinks = operands["followLinks"].value ) :
				relRoot = root[len(baseDirectory)+1:]
				if relRoot!="" :
					depth = len( relRoot.split( "/" ) )
				else :
					depth = 0

				if depth>=operands["maxDepth"].value :
					dirs[:] = []

				for d in dirs :
					ss = IECore.ls( os.path.join( root, d ), operands["minSequenceSize"].value )
					if ss :
						for s in ss :

							if relDir :
								s.fileName = os.path.join( baseDirectory, relRoot, d, s.fileName )
							else :
								s.fileName = os.path.join( relRoot, d, s.fileName )
							sequences.append( s )


		# \todo This Op would benefit considerably from dynamic parameters
		# NB. Ordering of filters could have considerable impact on execution time. The most expensive filters should be specified last.
		filters = []

		# filter sequences based on type
		if operands["type"].value != "any" :

			if operands["type"].value == "files" :
				fileTypeTest = os.path.isfile
			else :
				assert( operands["type"].value == "directories" )
				fileTypeTest = os.path.isdir

			def matchType( sequence ) :
				for sequenceFile in sequence.fileNames() :
					if not fileTypeTest( sequenceFile ) :
						return False