#!/usr/bin/env python

import sys, os
from glob import glob
import commands
import ipkg

pkg_dir1 = sys.argv[1]
pkg_dir2 = sys.argv[2]

if ( not pkg_dir1 or not pkg_dir2 ):
	sys.stderr.write("Usage: ipkg-update-index <package_directory1> <package_directory2>\n")
	sys.exit(1)

pkgs1 = ipkg.Packages()
pkgs1.read_packages_file(pkg_dir1 + '/Packages')

pkgs2 = ipkg.Packages()
pkgs2.read_packages_file(pkg_dir2 + '/Packages')

names1 = pkgs1.packages.keys()
names2 = pkgs2.packages.keys()

## union of the two names lists
pkgs = {}
for name in names1:
    pkgs[name] = pkgs1.packages[name]
for name in names2:
    pkgs[name] = pkgs2.packages[name]

names = pkgs.keys()
names.sort() 
for name in names:
    pkg1 = None
    pkg2 = None
    if pkgs1.packages.has_key(name):
        pkg1 = pkgs1.packages[name]
    if pkgs2.packages.has_key(name):
        pkg2 = pkgs2.packages[name]
    if pkg1 and pkg2 and pkg1.version != pkg2.version:
        print "CHANGED: %s from version %s to %s (%s)" % (pkg1.package, pkg1.version, pkg2.version, pkg2.maintainer)
        cmd = "ipkg-diff %s %s > %s " % ((pkg_dir1 + pkg1.filename),  (pkg_dir2 + pkg2.filename), (pkg1.package + '.diff'))
        print cmd
	commands.getstatusoutput(cmd)
    if not pkg1:
        print "NEW: %s version %s (%s)"% (pkg2.package, pkg2.version, pkg2.maintainer)
    if not pkg2:
        print "DELETE: %s version %s (%s)"% (pkg1.package, pkg1.version, pkg1.maintainer)