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# Copyright 2011-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import difflib
from portage.versions import catsplit
def similar_name_search(dbs, atom):
cp_lower = atom.cp.lower()
cat, pkg = catsplit(cp_lower)
if cat == "null":
cat = None
all_cp = set()
for db in dbs:
all_cp.update(db.cp_all())
# discard dir containing no ebuilds
all_cp.discard(atom.cp)
orig_cp_map = {}
for cp_orig in all_cp:
orig_cp_map.setdefault(cp_orig.lower(), []).append(cp_orig)
all_cp = set(orig_cp_map)
if cat:
matches = difflib.get_close_matches(cp_lower, all_cp)
else:
pkg_to_cp = {}
for other_cp in list(all_cp):
other_pkg = catsplit(other_cp)[1]
if other_pkg == pkg:
# Check for non-identical package that
# differs only by upper/lower case.
identical = True
for cp_orig in orig_cp_map[other_cp]:
if catsplit(cp_orig)[1] != \
catsplit(atom.cp)[1]:
identical = False
break
if identical:
# discard dir containing no ebuilds
all_cp.discard(other_cp)
continue
pkg_to_cp.setdefault(other_pkg, set()).add(other_cp)
pkg_matches = difflib.get_close_matches(pkg, pkg_to_cp)
matches = []
for pkg_match in pkg_matches:
matches.extend(pkg_to_cp[pkg_match])
matches_orig_case = []
for cp in matches:
matches_orig_case.extend(orig_cp_map[cp])
return matches_orig_case
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