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# Copyright 2007-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
import logging
import portage
from portage.output import colorize
def display_preserved_libs(vardb, verbose=False):
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(
f"!!! Command Not Found: {e}\n", level=logging.ERROR, noiselevel=-1
)
else:
search_for_owners = set()
for cpv in plibdata:
internal_plib_keys = {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, greedy=False):
# 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
max_search = None if verbose else MAX_DISPLAY + 1
search_for_owners.update(consumers[:max_search])
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
all_preserved = set()
all_preserved.update(*plibdata.values())
for cpv in plibdata:
print(colorize("WARN", ">>>") + f" package: {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", " * ") + f" - {p}")
f = alt_paths[0]
consumers = consumer_map.get(f, [])
consumers_non_preserved = [c for c in consumers if c not in all_preserved]
if consumers_non_preserved:
# Filter the consumers that are preserved libraries, since
# they don't need to be rebuilt (see bug #461908).
consumers = consumers_non_preserved
if verbose:
max_display = None
elif len(consumers) == MAX_DISPLAY + 1:
# Display 1 extra consumer, instead of displaying
# "used by 1 other files".
max_display = MAX_DISPLAY + 1
else:
max_display = MAX_DISPLAY
for c in consumers[:max_display]:
if c in all_preserved:
# The owner is displayed elsewhere due to having
# its libs preserved, so distinguish this special
# case (see bug #461908).
owners_desc = "preserved"
else:
owners_desc = ", ".join(x.mycpv for x in owners.get(c, []))
print(colorize("WARN", " * ") + f" used by {c} ({owners_desc})")
if not verbose and len(consumers) > max_display:
print(
colorize("WARN", " * ")
+ " used by %d other files" % (len(consumers) - max_display)
)
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