1 files changed, 78 insertions, 0 deletions
diff --git a/pym/portage/package/ebuild/getmaskingreason.py b/pym/portage/package/ebuild/getmaskingreason.py
new file mode 100644
index 000000000..d0c816439
--- /dev/null
+++ b/pym/portage/package/ebuild/getmaskingreason.py
@@ -0,0 +1,78 @@
+# Copyright 2010 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+__all__ = ['getmaskingreason']
+
+import portage
+from portage import os
+from portage.const import USER_CONFIG_PATH
+from portage.dep import match_from_list
+from portage.localization import _
+from portage.util import grablines, normalize_path
+from portage.versions import catpkgsplit
+
+def getmaskingreason(mycpv, metadata=None, settings=None, portdb=None, return_location=False):
+	if settings is None:
+		settings = portage.settings
+	if portdb is None:
+		portdb = portage.portdb
+	mysplit = catpkgsplit(mycpv)
+	if not mysplit:
+		raise ValueError(_("invalid CPV: %s") % mycpv)
+	if metadata is None:
+		db_keys = list(portdb._aux_cache_keys)
+		try:
+			metadata = dict(zip(db_keys, portdb.aux_get(mycpv, db_keys)))
+		except KeyError:
+			if not portdb.cpv_exists(mycpv):
+				raise
+	if metadata is None:
+		# Can't access SLOT due to corruption.
+		cpv_slot_list = [mycpv]
+	else:
+		cpv_slot_list = ["%s:%s" % (mycpv, metadata["SLOT"])]
+	mycp=mysplit[0]+"/"+mysplit[1]
+
+	# XXX- This is a temporary duplicate of code from the config constructor.
+	locations = [os.path.join(settings["PORTDIR"], "profiles")]
+	locations.extend(settings.profiles)
+	for ov in settings["PORTDIR_OVERLAY"].split():
+		profdir = os.path.join(normalize_path(ov), "profiles")
+		if os.path.isdir(profdir):
+			locations.append(profdir)
+	locations.append(os.path.join(settings["PORTAGE_CONFIGROOT"],
+		USER_CONFIG_PATH))
+	locations.reverse()
+	pmasklists = [(x, grablines(os.path.join(x, "package.mask"), recursive=1)) for x in locations]
+
+	if mycp in settings.pmaskdict:
+		for x in settings.pmaskdict[mycp]:
+			if match_from_list(x, cpv_slot_list):
+				for pmask in pmasklists:
+					comment = ""
+					comment_valid = -1
+					pmask_filename = os.path.join(pmask[0], "package.mask")
+					for i in range(len(pmask[1])):
+						l = pmask[1][i].strip()
+						if l == "":
+							comment = ""
+							comment_valid = -1
+						elif l[0] == "#":
+							comment += (l+"\n")
+							comment_valid = i + 1
+						elif l == x:
+							if comment_valid != i:
+								comment = ""
+							if return_location:
+								return (comment, pmask_filename)
+							else:
+								return comment
+						elif comment_valid != -1:
+							# Apparently this comment applies to muliple masks, so
+							# it remains valid until a blank line is encountered.
+							comment_valid += 1
+	if return_location:
+		return (None, None)
+	else:
+		return None