From d54fbed5b538cca5986e783c271cfd9cf679198d Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Wed, 25 Aug 2010 20:12:13 -0700
Subject: Bug #334365 - Mask packages with invalid metadata as early as
 possible, so that the depgraph won't select them unless they are already
 installed and there is no other choice. This should trigger automatic
 reinstallation of installed packages that have invalid metadata.

---
 pym/_emerge/Package.py | 66 +++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 63 insertions(+), 3 deletions(-)

(limited to 'pym/_emerge/Package.py')

diff --git a/pym/_emerge/Package.py b/pym/_emerge/Package.py
index 640f8bca1..557dda5c5 100644
--- a/pym/_emerge/Package.py
+++ b/pym/_emerge/Package.py
@@ -1,14 +1,15 @@
 # Copyright 1999-2010 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
-import re
 import sys
 from itertools import chain
 import portage
 from portage.cache.mappings import slot_dict_class
-from portage.dep import isvalidatom, use_reduce, \
+from portage.dep import Atom, isvalidatom, use_reduce, \
 	paren_enclose, _slot_re
-from portage.eapi import eapi_has_iuse_defaults, eapi_has_required_use
+from portage.eapi import eapi_has_src_uri_arrows, eapi_has_slot_deps, \
+	eapi_has_use_deps, eapi_has_strong_blocks, eapi_has_iuse_defaults, \
+	eapi_has_required_use, eapi_has_use_dep_defaults
 from _emerge.Task import Task
 
 if sys.hexversion >= 0x3000000:
@@ -33,6 +34,8 @@ class Package(Task):
 		"repository", "PROPERTIES", "RESTRICT", "SLOT", "USE",
 		"_mtime_", "DEFINED_PHASES", "REQUIRED_USE"]
 
+	_dep_keys = ('DEPEND', 'PDEPEND', 'RDEPEND',)
+
 	def __init__(self, **kwargs):
 		Task.__init__(self, **kwargs)
 		self.root = self.root_config.root
@@ -60,9 +63,66 @@ class Package(Task):
 		self.category, self.pf = portage.catsplit(self.cpv)
 		self.cpv_split = portage.catpkgsplit(self.cpv)
 		self.pv_split = self.cpv_split[1:]
+		self._validate_deps()
 		self.masks = self._masks()
 		self.visible = self._visible(self.masks)
 
+	def _validate_deps(self):
+		"""
+		Validate deps. This does not trigger USE calculation since that
+		is expensive for ebuilds and therefore we want to avoid doing
+		in unnecessarily (like for masked packages).
+		"""
+		eapi = self.metadata['EAPI']
+		for k in self._dep_keys:
+			v = self.metadata.get(k)
+			if not v:
+				continue
+			try:
+				atoms = portage.dep.use_reduce(v, matchall=True, flat=True,
+					is_valid_flag=self.iuse.is_valid_flag, token_class=Atom)
+			except portage.exception.InvalidDependString as e:
+				self._invalid_metadata(k + ".syntax", "%s: %s" % (k, e))
+			else:
+				for atom in atoms:
+					if not isinstance(atom, Atom):
+						continue
+
+					if atom.slot and not eapi_has_slot_deps(eapi):
+						self._invalid_metadata('EAPI.incompatible',
+							("%s slot dependency" + \
+							" not supported with EAPI='%s':" + \
+							" '%s'") % (k, eapi, atom))
+
+					if atom.use and not eapi_has_use_deps(eapi):
+						self._invalid_metadata('EAPI.incompatible',
+							("%s use dependency" + \
+							" not supported with EAPI='%s':" + \
+							" '%s'") % (k, eapi, atom))
+
+					if atom.use and (atom.use.missing_enabled or atom.use.missing_disabled) and \
+						not eapi_has_use_dep_defaults(eapi):
+						self._invalid_metadata('EAPI.incompatible',
+							("%s use dependency" + \
+							" not supported with EAPI='%s':" + \
+							" '%s'") % (k, eapi, atom))
+
+					if atom.blocker and atom.blocker.overlap.forbid \
+						and not eapi_has_strong_blocks(eapi):
+						self._invalid_metadata('EAPI.incompatible',
+							("%s new blocker syntax" + \
+							" not supported with EAPI='%s':" + \
+							" '%s'") % (k, eapi, atom))
+
+		k = 'SRC_URI'
+		v = self.metadata.get(k)
+		if v:
+			try:
+				use_reduce(v, matchall=True, flat=True, is_src_uri=True,
+					allow_src_uri_file_renames=eapi_has_src_uri_arrows(eapi))
+			except portage.exception.InvalidDependString as e:
+				self._invalid_metadata(k + ".syntax", "%s: %s" % (k, e))
+
 	def copy(self):
 		return Package(built=self.built, cpv=self.cpv, depth=self.depth,
 			installed=self.installed, metadata=self._raw_metadata,
-- 
cgit v1.2.3-1-g7c22