#!/usr/bin/python

# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of the License "Symbian Foundation License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description:

#

import re

import sys

# there are no options, so print help if any are passed

if len(sys.argv) > 1:

	print "usage:", sys.argv[0], "(The log data is read from stdin)"

	sys.exit(0)

whatlogRE = re.compile("<whatlog.*bldinf='([^']*)'")

exportRE = re.compile("<export destination='(.*)' source='(.*)'")

bldinf = "unknown"

sources = {}		# lookup from source to destination

destinations = {}	# lookup from destination to source

chains = 0

repeats = 0

conflicts = []

# read stdin a line at a time and soak up all the exports

line = " "

while line:

	line = sys.stdin.readline()

	whatlogMatch = whatlogRE.search(line)

	if whatlogMatch:

		bldinf = whatlogMatch.group(1).lower()

		continue

	exportMatch = exportRE.search(line)

	if exportMatch:

		destination = exportMatch.group(1).lower()

		source = exportMatch.group(2).lower()

		if destination in destinations:

			(otherSource, otherBldinf) = destinations[destination]

			# same source and destination but different bld.inf => repeat	

			if source == otherSource and bldinf != otherBldinf:

				# only interested in the number for now

				repeats += 1

			# different source but same destination => conflict

			if source != otherSource:

				conflict = (source, destination, bldinf, otherSource, otherBldinf)

				tcilfnoc = (otherSource, destination, otherBldinf, source, bldinf)

				if conflict in conflicts or tcilfnoc in conflicts:

					# seen this conflict before

					pass

				else:

					print "CONFLICT:", destination, \

						"FROM", source, \

						"IN", bldinf, \

						"AND FROM", otherSource, \

						"IN", otherBldinf

					conflicts.append(conflict)

		else:

			sources[source] = [destination, bldinf]

			destinations[destination] = [source, bldinf]

# now check for destinations which were also sources => chains

for destination in destinations:

	if destination in sources:

		(nextDestination, inf2) = sources[destination]

		(source, inf1) = destinations[destination]

		print "CHAIN:", source, \

			"TO", destination, \

			"IN", inf1, \

			"THEN TO", nextDestination, \

			"IN", inf2

		chains += 1

# print a summary

print "Total exports = ", len(destinations.keys())

print "Chained exports = ", chains

print "Repeated exports = ", repeats

print "Conflicting exports = ", len(conflicts)

# return the error code

if conflicts:

	sys.exit(1)

sys.exit(0)