#!/usr/bin/env spython
import os
from os.path import walk, splitext, exists, basename, dirname
import sys

import output
from output import *
import portage
import string
from string import strip, find, replace, split

"""converts $PV slots to null slots"""
localtree=portage.vartree()
for node in localtree.getallnodes():
	for package in localtree.dep_match(node):
		slotpath=dirname(localtree.getebuildpath(package))+"/SLOT"
		if os.path.exists(slotpath):
			package_parts=portage.catpkgsplit(package)
			slotfile=open(slotpath,'r+')
			actualslot=slotfile.readline().strip()
			if actualslot==package_parts[2]:
				slotfile.truncate(0)
				print slotpath,"has been set to null"
			slotfile.close()