# updatelocal.py
# During a BIRCH update, this script checks to make sure
# that all files found in the new copy of $BIRCH/local-generic
# are also present in the existing $BIRCH/local directory. 
# Files not found in $BIRCH/local are copied from $BIRCH/local-generic
# 

# Set variables for local-generic, local, and current
# directories

import os, os.path, sys, shutil

def update_local():
	UPDIR = os.path.abspath(os.path.join(os.getcwd(), os.pardir))
	LOCAL = os.path.join(UPDIR, "local")
	LOCALGENERIC = os.path.join(UPDIR, "local-generic")
	print ("LOCAL        " + LOCAL)
	print ("LOCALGENERIC " + LOCALGENERIC)
	newlocalfiles = open("NewLocalFiles.list")
	
	#---------------------------------------------------------------------------
	# When a directory is not found, copy whole directory
	# in a single step. Otherwise, copy one file at a time.
	for name in newlocalfiles:

		gen_name = os.path.join(LOCALGENERIC, name)
		local_name = os.path.join(LOCAL, name)
		
		if os.path.exists(gen_name) and not os.path.exists(local_name):
			# symbolic link
			if os.path.islink(gen_name):
					print ('Copying link ' + local_name)
					os.symlink(local_name, os.readlink(gen_name))
			# directory
			elif os.path.isdir(gen_name):
				print ('Copying directory ' + local_name)
				shutil.copytree(gen_name, local_name)
			#file
			else:
				print ('Copying file ' + local_name)
				shutil.copy(gen_name, local_name)
	     
	newlocalfiles.close()
	
if __name__=="__main__":
	update_local()