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Diffstat (limited to 'pym/portage/dep/_slot_operator.py')
-rw-r--r-- | pym/portage/dep/_slot_operator.py | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/pym/portage/dep/_slot_operator.py b/pym/portage/dep/_slot_operator.py new file mode 100644 index 000000000..8a2b774a8 --- /dev/null +++ b/pym/portage/dep/_slot_operator.py @@ -0,0 +1,92 @@ +# Copyright 2012 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +from portage.dep import Atom, paren_enclose, use_reduce +from portage.exception import InvalidData + +_dep_keys = ('DEPEND', 'PDEPEND', 'RDEPEND') +_runtime_keys = ('PDEPEND', 'RDEPEND') + +def find_built_slot_operator_atoms(pkg): + atoms = {} + for k in _dep_keys: + atom_list = list(_find_built_slot_operator(use_reduce(pkg.metadata[k], + uselist=pkg.use.enabled, eapi=pkg.metadata['EAPI'], + token_class=Atom))) + if atom_list: + atoms[k] = atom_list + return atoms + +def _find_built_slot_operator(dep_struct): + for x in dep_struct: + if isinstance(x, list): + for atom in _find_built_slot_operator(x): + yield atom + elif isinstance(x, Atom) and x.slot_operator_built: + yield x + +def ignore_built_slot_operator_deps(dep_struct): + for i, x in enumerate(dep_struct): + if isinstance(x, list): + ignore_built_slot_operator_deps(x) + elif isinstance(x, Atom) and x.slot_operator_built: + # There's no way of knowing here whether the SLOT + # part of the slot/sub-slot pair should be kept, so we + # ignore both parts. + dep_struct[i] = x.without_slot + +def evaluate_slot_operator_equal_deps(settings, use, trees): + + metadata = settings.configdict['pkg'] + eapi = metadata['EAPI'] + running_vardb = trees[trees._running_eroot]["vartree"].dbapi + target_vardb = trees[trees._target_eroot]["vartree"].dbapi + vardbs = [target_vardb] + deps = {} + for k in _dep_keys: + deps[k] = use_reduce(metadata[k], + uselist=use, eapi=eapi, token_class=Atom) + + for k in _runtime_keys: + _eval_deps(deps[k], vardbs) + + if running_vardb is not target_vardb: + vardbs.append(running_vardb) + + _eval_deps(deps["DEPEND"], vardbs) + + result = {} + for k, v in deps.items(): + result[k] = paren_enclose(v) + + return result + +def _eval_deps(dep_struct, vardbs): + for i, x in enumerate(dep_struct): + if isinstance(x, list): + _eval_deps(x, vardbs) + elif isinstance(x, Atom) and x.slot_operator == "=": + for vardb in vardbs: + best_version = vardb.match(x) + if best_version: + best_version = best_version[-1] + try: + best_version = \ + vardb._pkg_str(best_version, None) + except (KeyError, InvalidData): + pass + else: + slot_part = "%s/%s=" % \ + (best_version.slot, best_version.sub_slot) + x = x.with_slot(slot_part) + dep_struct[i] = x + break + else: + # this dep could not be resolved, so remove the operator + # (user may be using package.provided and managing rebuilds + # manually) + if x.slot: + x = x.with_slot(x.slot) + else: + x = x.without_slot + dep_struct[i] = x |