From f7e0875d7c341b5447bb3519495fd4ab2d3f565c Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Mon, 19 Jul 2010 11:04:17 -0700
Subject: In portdbapi.getfetchsizes(), only split PORTAGE_RO_DISTDIRS when
 necessary.

---
 pym/portage/dbapi/porttree.py | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/pym/portage/dbapi/porttree.py b/pym/portage/dbapi/porttree.py
index 9c67c7884..a40678bdd 100644
--- a/pym/portage/dbapi/porttree.py
+++ b/pym/portage/dbapi/porttree.py
@@ -785,8 +785,6 @@ class portdbapi(dbapi):
 			return {}
 		filesdict={}
 		myfiles = self.getFetchMap(mypkg, useflags=useflags)
-		ro_distdirs = [x for x in \
-			shlex_split(self.settings.get("PORTAGE_RO_DISTDIRS", ""))]
 		#XXX: maybe this should be improved: take partial downloads
 		# into account? check checksums?
 		for myfile in myfiles:
@@ -804,15 +802,17 @@ class portdbapi(dbapi):
 				pass
 			if mystat is None:
 				existing_size = 0
-				for x in ro_distdirs:
-					try:
-						mystat = os.stat(os.path.join(x, myfile))
-					except OSError:
-						pass
-					else:
-						if mystat.st_size == fetch_size:
-							existing_size = fetch_size
-							break
+				ro_distdirs = self.settings.get("PORTAGE_RO_DISTDIRS")
+				if ro_distdirs is not None:
+					for x in shlex_split(ro_distdirs):
+						try:
+							mystat = os.stat(os.path.join(x, myfile))
+						except OSError:
+							pass
+						else:
+							if mystat.st_size == fetch_size:
+								existing_size = fetch_size
+								break
 			else:
 				existing_size = mystat.st_size
 			remaining_size = fetch_size - existing_size
-- 
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