#!/usr/bin/env python


#nice apt-get -s -o Debug::NoLocking=true upgrade | grep ^Inst 

import apt_pkg
import os
import sys

SYNAPTIC_PINFILE = "/root/.synaptic/preferences"

# be nice
os.nice(19)

# init
apt_pkg.init()

# get caches
cache = apt_pkg.GetCache()
depcache = apt_pkg.GetDepCache(cache)
records = apt_pkg.GetPkgRecords(cache)
    
# read the pin files
depcache.ReadPinFile()
# read the synaptic pins too
if os.path.exists(SYNAPTIC_PINFILE):
    depcache.ReadPinFile(SYNAPTIC_PINFILE)

# do the upgrade (not dist-upgrade!)
depcache.Upgrade()

for pkg in cache.Packages:
    if depcache.MarkedInstall(pkg):
        print "Upgradable: %s" % pkg.Name
        ver = pkg.CurrentVer
        print "Installed: %s " % ver
        ver = depcache.GetCandidateVer(pkg)
        print "Candidate: %s " % ver
        file, index = ver.FileList.pop(0)
        print "PkgFile: %s " % file
        print
    elif depcache.IsInstBroken(pkg) or depcache.IsNowBroken(pkg):
        print "Broken: %s " % pkg.Name
        print
    elif pkg.CurrentVer != None and depcache.IsUpgradable(pkg):
	print "Keept back: %s" % pkg.Name
        print

print "Stats:"
print "InstCount: %s" % depcache.InstCount
print "BrokenCount: %s" % depcache.BrokenCount
print "DelCount: %s" % depcache.DelCount


# return the number of upgrades
sys.exit(depcache.InstCount)