blob: ab16054134682735d994517e71b8b89834077e7a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
# Copyright 2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
__all__ = ["dep_expand"]
import re
from portage.dbapi.cpv_expand import cpv_expand
from portage.dep import Atom, isvalidatom
from portage.exception import InvalidAtom
from portage.versions import catsplit
def dep_expand(mydep, mydb=None, use_cache=1, settings=None):
'''
@rtype: Atom
'''
if not len(mydep):
return mydep
if mydep[0]=="*":
mydep=mydep[1:]
orig_dep = mydep
if isinstance(orig_dep, Atom):
mydep = orig_dep.cp
else:
mydep = orig_dep
has_cat = '/' in orig_dep
if not has_cat:
alphanum = re.search(r'\w', orig_dep)
if alphanum:
mydep = orig_dep[:alphanum.start()] + "null/" + \
orig_dep[alphanum.start():]
try:
mydep = Atom(mydep)
except InvalidAtom:
# Missing '=' prefix is allowed for backward compatibility.
if not isvalidatom("=" + mydep):
raise
mydep = Atom('=' + mydep)
orig_dep = '=' + orig_dep
if not has_cat:
null_cat, pn = catsplit(mydep.cp)
mydep = pn
else:
mydep = mydep.cp
expanded = cpv_expand(mydep, mydb=mydb,
use_cache=use_cache, settings=settings)
return Atom(orig_dep.replace(mydep, expanded, 1))
|
GitWeb
