script to find libraries that are required indirectly

indirect_providers.py (text/x-python), 1.26 KB, created by Zac Medico on 2011-05-19 03:41:10 UTC

#!/usr/bin/env python
# Copyright 2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

import sys
import portage

root = portage.settings["ROOT"]
vardb = portage.db[root]["vartree"].dbapi
linkmap = vardb._linkmap
linkmap.rebuild()
root_len = len(root) - 1
for cpv in vardb.cpv_all():
	pkg_dblink = vardb._dblink(cpv)
	private_libs = {}
	private_consumers = {}
	public_libs = {}
	for p_abs, data in pkg_dblink.getcontents().items():
		if data[0] != "obj":
			continue
		p = p_abs[root_len:]
		try:
			consumers = linkmap.findConsumers(p)
		except KeyError:
			continue
		if not consumers:
			continue
		only_internal_consumers = True
		for c in consumers:
			if not pkg_dblink.isowner(c):
				only_internal_consumers = False
				break
		if only_internal_consumers:
			private_libs[p] = consumers
			for c in consumers:
				private_consumers.setdefault(c, set()).add(p)
		else:
			public_libs[p] = consumers
	if private_libs and public_libs:
		indirect_providers = set()
		for p in public_libs:
			if p in private_consumers:
				indirect_providers.update(private_consumers[p])
		if indirect_providers:
			indirect_providers = sorted(indirect_providers)
			sys.stdout.write("%s %s\n" % \
				(cpv, " ".join(indirect_providers)))
			sys.stdout.flush()