Make readpkgindex() and writepkgindex() private methods of PackageIndex.

svn path=/main/trunk/; revision=9453
diff --git a/pym/portage/getbinpkg.py b/pym/portage/getbinpkg.py
index e3f97e7..1470076 100644
--- a/pym/portage/getbinpkg.py
+++ b/pym/portage/getbinpkg.py
@@ -655,26 +655,6 @@
 	
 	return metadata[baseurl]["data"]
 
-def readpkgindex(pkgfile):
-	d = {}
-	for line in pkgfile:
-		line = line.rstrip("\n")
-		if not line:
-			break
-		line = line.split(":", 1)
-		if not len(line) == 2:
-			continue
-		k, v = line
-		if v:
-			v = v[1:]
-		d[k] = v
-	return d
-
-def writepkgindex(pkgfile, items):
-	for k, v in items:
-		pkgfile.write("%s: %s\n" % (k, v))
-	pkgfile.write("\n")
-
 def _cmp_cpv(d1, d2):
 	cpv1 = d1["CPV"]
 	cpv2 = d2["CPV"]
@@ -694,16 +674,36 @@
 		self.packages = []
 		self.modified = True
 
+	def _readpkgindex(self, pkgfile):
+		d = {}
+		for line in pkgfile:
+			line = line.rstrip("\n")
+			if not line:
+				break
+			line = line.split(":", 1)
+			if not len(line) == 2:
+				continue
+			k, v = line
+			if v:
+				v = v[1:]
+			d[k] = v
+		return d
+	
+	def _writepkgindex(self, pkgfile, items):
+		for k, v in items:
+			pkgfile.write("%s: %s\n" % (k, v))
+		pkgfile.write("\n")
+
 	def read(self, pkgfile):
 		self.readHeader(pkgfile)
 		self.readBody(pkgfile)
 
 	def readHeader(self, pkgfile):
-		self.header.update(readpkgindex(pkgfile))
+		self.header.update(self._readpkgindex(pkgfile))
 
 	def readBody(self, pkgfile):
 		while True:
-			d = readpkgindex(pkgfile)
+			d = self._readpkgindex(pkgfile)
 			if not d:
 				break
 			mycpv = d.get("CPV")
@@ -725,7 +725,7 @@
 			self.header["PACKAGES"] = str(len(self.packages))
 		keys = self.header.keys()
 		keys.sort()
-		writepkgindex(pkgfile, [(k, self.header[k]) for k in keys])
+		self._writepkgindex(pkgfile, [(k, self.header[k]) for k in keys])
 		for metadata in sorted(self.packages, _cmp_cpv):
 			metadata = metadata.copy()
 			cpv = metadata["CPV"]
@@ -740,5 +740,5 @@
 						metadata.pop(k, None)
 			keys = metadata.keys()
 			keys.sort()
-			writepkgindex(pkgfile,
+			self._writepkgindex(pkgfile,
 				[(k, metadata[k]) for k in keys if metadata[k]])