From 871e66b69027fc6727a0e8c4c7b7b4ac856d0880 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Tue, 22 May 2007 22:38:27 +0000
Subject: Split reading/writing of $PKGDIR/Packages into a PackageIndex class.

svn path=/main/trunk/; revision=6584
---
 pym/portage/dbapi/bintree.py | 28 ++++++----------------------
 pym/portage/getbinpkg.py     | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 22 deletions(-)

diff --git a/pym/portage/dbapi/bintree.py b/pym/portage/dbapi/bintree.py
index ded6098c1..5ec32d252 100644
--- a/pym/portage/dbapi/bintree.py
+++ b/pym/portage/dbapi/bintree.py
@@ -115,6 +115,7 @@ class binarytree(object):
 			self._pkg_paths = {}
 			self._all_directory = os.path.isdir(
 				os.path.join(self.pkgdir, "All"))
+			self._pkgindex = None
 			self._pkgindex_keys = set(["CPV", "SLOT", "MTIME", "SIZE"])
 
 	def move_ent(self, mylist):
@@ -373,24 +374,16 @@ class binarytree(object):
 			dirs.sort()
 			dirs.insert(0, "All")
 			pkgfile = os.path.join(self.pkgdir, "Packages")
-			metadata = {}
-			header = {}
+			self._pkgindex = portage.getbinpkg.PackageIndex()
+			header = self._pkgindex.header
+			metadata = self._pkgindex.packages
 			try:
 				f = open(pkgfile)
 			except EnvironmentError:
 				pass
 			else:
 				try:
-					header = portage.getbinpkg.readpkgindex(f)
-					while True:
-						d = portage.getbinpkg.readpkgindex(f)
-						if not d:
-							break
-						mycpv = d.get("CPV")
-						if not mycpv:
-							continue
-						d.setdefault("SLOT", "0")
-						metadata[mycpv] = d
+					self._pkgindex.read(f)
 				finally:
 					f.close()
 					del f
@@ -498,19 +491,10 @@ class binarytree(object):
 				stale = set(metadata).difference(cpv_all)
 				for cpv in stale:
 					del metadata[cpv]
-				cpv_all.sort()
-				import time
 				from portage.util import atomic_ofstream
-				header["TIMESTAMP"] = str(long(time.time()))
-				header["PACKAGES"] = str(len(cpv_all))
 				f = atomic_ofstream(pkgfile)
 				try:
-					portage.getbinpkg.writepkgindex(f, header.iteritems())
-					for cpv in cpv_all:
-						d = metadata[cpv]
-						if d["SLOT"] == "0":
-							del d["SLOT"]
-						portage.getbinpkg.writepkgindex(f, d.iteritems())
+					self._pkgindex.write(f)
 				finally:
 					f.close()
 
diff --git a/pym/portage/getbinpkg.py b/pym/portage/getbinpkg.py
index 070b036b5..f21dce364 100644
--- a/pym/portage/getbinpkg.py
+++ b/pym/portage/getbinpkg.py
@@ -590,3 +590,35 @@ def writepkgindex(pkgfile, items):
 	for k, v in items:
 		pkgfile.write("%s: %s\n" % (k, v))
 	pkgfile.write("\n")
+
+class PackageIndex(object):
+
+	def __init__(self):
+		self.header = {}
+		self.packages = {}
+
+	def read(self, pkgfile):
+		self.header.update(readpkgindex(pkgfile))
+		while True:
+			d = readpkgindex(pkgfile)
+			if not d:
+				break
+			mycpv = d.get("CPV")
+			if not mycpv:
+				continue
+			d.setdefault("SLOT", "0")
+			self.packages[mycpv] = d
+
+	def write(self, pkgfile):
+		cpv_all = self.packages.keys()
+		cpv_all.sort()
+		import time
+		self.header["TIMESTAMP"] = str(long(time.time()))
+		self.header["PACKAGES"] = str(len(cpv_all))
+		writepkgindex(pkgfile, self.header.iteritems())
+		for cpv in cpv_all:
+			metadata = self.packages[cpv]
+			if metadata["SLOT"] == "0":
+				metadata = metadata.copy()
+				del metadata["SLOT"]
+			writepkgindex(pkgfile, metadata.iteritems())
-- 
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