def get_dependencies(self, vanilla_requirements, if_use=None):
"""
Generate :term:`DEPEND` / :term:`RDEPEND` strings.
:param vanilla_requirements: **require_\*** contents from `setup.py`
:param if_use: :term:`USE` flag that must be set
to download dependencies
:type vanilla_requirements: string or list
:type if_use: string
"""
# TODO: DOC: steps to acquire deps
requirements = parse_requirements(vanilla_requirements)
for req in requirements:
extras = req.extras
# TODO: extend configuration to support callable configs
# TODO: pass metadata from the project_name
#category = Enamer.convert_category(req.project_name, {})
category = self.options.category
pn = Enamer.parse_pn(req.project_name)[0] or req.project_name
# add setuptools dependency for later dependency generating
self.add_setuptools_depend(req)
log.debug('get_dependencies: pn(%s) category(%s)', pn, category)
if not len(req.specs):
# No version of requirement was specified so we only add
# dev-python/pn
self.add_rdepend(Enamer.construct_atom(pn, category,
uses=extras, if_use=if_use))
else:
comparator, ver = req.specs[0]
ver = Enamer.parse_pv(ver)[0] or ver
log.debug('get_dependencies: pv(%s)' % ver)
if len(req.specs) > 1:
# Some packages have more than one comparator, i.e. cherrypy
# for turbogears has cherrpy>=2.2,<3.0 which would translate
# to portage's =dev-python/cherrypy-2.2*
comparator1, ver1 = req.specs[0]
comparator2, ver2 = req.specs[1]
# TODO: this is a total mess, refactor
if comparator1.startswith(">") and \
comparator2.startswith("<"):
# we set blocker for <*
self.add_rdepend(Enamer.construct_atom(pn, category, ver1,
comparator1, uses=extras, if_use=if_use))
self.add_rdepend(Enamer.construct_atom(pn, category, ver2,
"!" + comparator2, uses=extras, if_use=if_use))
elif comparator2.startswith(">") and \
comparator1.startswith("<"):
self.add_rdepend(Enamer.construct_atom(pn, category, ver2,
comparator2, uses=extras, if_use=if_use))
self.add_rdepend(Enamer.construct_atom(pn, category, ver1,
"!" + comparator1, uses=extras, if_use=if_use))
else:
self['warnings'].add("Couldn't resolve requirements. "
"You will need to make sure the RDEPEND for %s is "
"correct." % req)
self.add_rdepend(Enamer.construct_atom(pn, category,
uses=extras, if_use=if_use))
self['warnings'].add("Could not determine dependency: %s" % req)
break
# Requirement.specs is a list of (comparator,version) tuples
if comparator == "==":
comparator = "="
atom = Enamer.construct_atom(pn, category, ver, comparator,
uses=extras)
if PortageUtils.is_valid_atom(atom):
self.add_rdepend(Enamer.construct_atom(pn, category, ver,
comparator, uses=extras, if_use=if_use))
else:
log.debug("Invalid PV in dependency: (Requirement %s) %s",
req, atom)
installed_pv = PortageUtils.get_installed_ver(Enamer.\
construct_atom(pn, category, uses=extras, if_use=if_use))
if installed_pv:
# If we have it installed, use >= installed version
self.add_rdepend(Enamer.construct_atom(pn, category,
installed_pv, '>=', uses=extras, if_use=if_use))
else:
# If package has invalid version and we don't have
# an ebuild in portage, just add PN to DEPEND, no
# version.
self['warnings'].add("Could not determine dependency: %s" % req)
self.add_rdepend(Enamer.construct_atom(pn, category,
uses=extras, if_use=if_use))
