#!/usr/bin/python
# Script to check a Gentoo system for licenses a user does not agree to
# Author: Marius Mauch <genone@gentoo.org>
# This script is licensed under the GNU Public License version 2 or later

import sys
sys.path.insert(0, "/usr/lib/portage/pym")

import string
import portage

if len(sys.argv) != 2:
	print "Syntax: license-check <license-list>"
	print "  where <license-list> is a file containing the names of all licenses"
	print "  you agree with (names as in %s/licenses)." % portage.settings["PORTDIR"]
	print
	sys.exit(1)

print "Warning: the syntax for the LICENSE field is not completely clear, so"
print "         results generated by this script might be wrong or it might "
print "         not work at all."
print

# get all installed packages and our license list
allpkg = portage.vardbapi("/").cpv_all()
license_ok = portage.grabfile(sys.argv[1])

for p in allpkg:
	# get license list for current package
	l_str = portage.vardbapi("/").aux_get(p, ["LICENSE"])[0]
	# split OR lists ("is licensed under L1 or L2", qt for example)
	l_or_list = l_str.split("|")
	# package isn't tainted yet
	tainted_list = []
	for cur_list in l_or_list:
		my_lic_list = cur_list.split()
		# new OR part, maybe this part isn't tainted
		tainted = False
		for mylic in my_lic_list:
			if not mylic in license_ok:
				tainted = True
				tainted_list.append(mylic)
	if tainted:
		print p+": "+string.join(tainted_list, ", ")