[gentoo-commits] proj/gentoopm:master commit in: gentoopm/portagepm/

[Michał Górny]

commit:     3760928e4d4c083bba6539f628ea37a8d3c99729
Author:     Michał Górny <mgorny <AT> gentoo <DOT> org>
AuthorDate: Tue Jul 26 17:19:10 2011 +0000
Commit:     Michał Górny <mgorny <AT> gentoo <DOT> org>
CommitDate: Tue Jul 26 17:19:10 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/gentoopm.git;a=commit;h=3760928e

Portage: support a subset of dependency parsing.

---
 gentoopm/portagepm/depend.py |   42 ++++++++++++++++++++++++++++++++++++++++++
 gentoopm/portagepm/pkg.py    |   13 +++++++++++++
 2 files changed, 55 insertions(+), 0 deletions(-)

diff --git a/gentoopm/portagepm/depend.py b/gentoopm/portagepm/depend.py
new file mode 100644
index 0000000..6c06693
--- /dev/null
+++ b/gentoopm/portagepm/depend.py
@@ -0,0 +1,42 @@
+#!/usr/bin/python
+#	vim:fileencoding=utf-8
+# (c) 2011 Michał Górny <mgorny@g.o>
+# Released under the terms of the 2-clause BSD license.
+
+from portage.dep import paren_reduce
+
+from gentoopm.basepm.depend import PMPackageDepSet, PMConditionalDep, \
+	PMOneOfDep, PMAllOfDep, PMBaseDep
+from gentoopm.portagepm.atom import CompletePortageAtom
+
+class PortageBaseDep(PMBaseDep):
+	def __init__(self, deps):
+		self._deps = deps
+
+	def __iter__(self):
+		it = iter(self._deps)
+		for d in it:
+			if d == '||':
+				yield PortageOneOfDep(next(it))
+			elif d == '&&':
+				yield PortageAllOfDep(next(it))
+			elif d.endswith('?'):
+				yield PortageConditionalUseDep(next(it))
+			else:
+				yield CompletePortageAtom(d)
+
+class PortageOneOfDep(PMOneOfDep, PortageBaseDep):
+	pass
+
+class PortageAllOfDep(PMAllOfDep, PortageBaseDep):
+	pass
+
+class PortageConditionalUseDep(PMConditionalDep, PortageBaseDep):
+	@property
+	def enabled(self):
+		# XXX
+		raise NotImplementedError()
+
+class PortagePackageDepSet(PMPackageDepSet, PortageBaseDep):
+	def __init__(self, s):
+		self._deps = paren_reduce(s)

diff --git a/gentoopm/portagepm/pkg.py b/gentoopm/portagepm/pkg.py
index d2ee87b..9922af3 100644
--- a/gentoopm/portagepm/pkg.py
+++ b/gentoopm/portagepm/pkg.py
@@ -13,6 +13,7 @@ from gentoopm.basepm.pkgset import PMPackageSet, PMFilteredPackageSet
 from gentoopm.portagepm.atom import PortageAtom, CompletePortageAtom, \
 		PortagePackageKey, PortagePackageVersion, _get_atom
 from gentoopm.portagepm.contents import PortagePackageContents
+from gentoopm.portagepm.depend import PortagePackageDepSet
 from gentoopm.util import SpaceSepTuple
 
 class PortagePackageSet(PMPackageSet):
@@ -118,6 +119,18 @@ class PortageDBCPV(PMPackage, CompletePortageAtom):
 	def _atom(self):
 		return _get_atom(str(self))
 
+	@property
+	def build_dependencies(self):
+		return PortagePackageDepSet(self._aux_get('DEPEND'))
+
+	@property
+	def run_dependencies(self):
+		return PortagePackageDepSet(self._aux_get('RDEPEND'))
+
+	@property
+	def post_dependencies(self):
+		return PortagePackageDepSet(self._aux_get('PDEPEND'))
+
 	def __str__(self):
 		return '=%s' % self._cpv