display_preserved_libs: move to separate file

1 files changed, 79 insertions, 0 deletions

diff --git a/pym/portage/util/_dyn_libs/display_preserved_libs.py b/pym/portage/util/_dyn_libs/display_preserved_libs.py
new file mode 100644
index 000000000..bcb7827d1
--- /dev/null
+++ b/pym/portage/util/_dyn_libs/display_preserved_libs.py
@@ -0,0 +1,79 @@
+# Copyright 2007-2012 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+from __future__ import print_function
+
+import logging
+
+import portage
+from portage.output import colorize
+
+def display_preserved_libs(vardb):
+
+	MAX_DISPLAY = 3
+
+	plibdata = vardb._plib_registry.getPreservedLibs()
+	linkmap = vardb._linkmap
+	consumer_map = {}
+	owners = {}
+
+	try:
+		linkmap.rebuild()
+	except portage.exception.CommandNotFound as e:
+		portage.util.writemsg_level("!!! Command Not Found: %s\n" % (e,),
+			level=logging.ERROR, noiselevel=-1)
+	else:
+		search_for_owners = set()
+		for cpv in plibdata:
+			internal_plib_keys = set(linkmap._obj_key(f) \
+				for f in plibdata[cpv])
+			for f in plibdata[cpv]:
+				if f in consumer_map:
+					continue
+				consumers = []
+				for c in linkmap.findConsumers(f):
+					# Filter out any consumers that are also preserved libs
+					# belonging to the same package as the provider.
+					if linkmap._obj_key(c) not in internal_plib_keys:
+						consumers.append(c)
+				consumers.sort()
+				consumer_map[f] = consumers
+				search_for_owners.update(consumers[:MAX_DISPLAY+1])
+
+		owners = {}
+		for f in search_for_owners:
+			owner_set = set()
+			for owner in linkmap.getOwners(f):
+				owner_dblink = vardb._dblink(owner)
+				if owner_dblink.exists():
+					owner_set.add(owner_dblink)
+			if owner_set:
+				owners[f] = owner_set
+
+	for cpv in plibdata:
+		print(colorize("WARN", ">>>") + " package: %s" % cpv)
+		samefile_map = {}
+		for f in plibdata[cpv]:
+			obj_key = linkmap._obj_key(f)
+			alt_paths = samefile_map.get(obj_key)
+			if alt_paths is None:
+				alt_paths = set()
+				samefile_map[obj_key] = alt_paths
+			alt_paths.add(f)
+
+		for alt_paths in samefile_map.values():
+			alt_paths = sorted(alt_paths)
+			for p in alt_paths:
+				print(colorize("WARN", " * ") + " - %s" % (p,))
+			f = alt_paths[0]
+			consumers = consumer_map.get(f, [])
+			for c in consumers[:MAX_DISPLAY]:
+				print(colorize("WARN", " * ") + "     used by %s (%s)" % \
+					(c, ", ".join(x.mycpv for x in owners.get(c, []))))
+			if len(consumers) == MAX_DISPLAY + 1:
+				print(colorize("WARN", " * ") + "     used by %s (%s)" % \
+					(consumers[MAX_DISPLAY], ", ".join(x.mycpv \
+					for x in owners.get(consumers[MAX_DISPLAY], []))))
+			elif len(consumers) > MAX_DISPLAY:
+				print(colorize("WARN", " * ") + "     used by %d other files" %
+					(len(consumers) - MAX_DISPLAY))