#!/usr/bin/python

#

# Copyright (c) 2009-2010 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description:

#

# Script for parsing TeleLogic Change ids and svn revisions from svn log.

#

import os, re, sys, traceback

from optparse import OptionParser

def main():

    parser = OptionParser(

        usage = "python -u %prog [options] <svn_url> <svn_rev_1> <svn_rev_2>")

    parser.add_option("-r", "--release", dest="release",

                      help="release to which the change is targeted, e.g. 92 or mcl")

    (opts, args) = parser.parse_args()

    svn_url = args[0]

    svn_rev_1 = args[1]

    svn_rev_2 = args[2]

    if len(args) > 3:

        print "ERROR: Too many arguments"

        sys.exit(1)

    try:

        svn_change_ids = get_svn_change_ids(opts.release, svn_url, svn_rev_1, svn_rev_2)

        change_ids = svn_change_ids.keys()

        change_ids.sort()

        for change_id in change_ids:

            print "%s %s" % (change_id, ",".join(svn_change_ids[change_id]))

    except:

        print "ERROR: Unexpected exception"

        traceback.print_exc()

        sys.exit(1)

def get_svn_change_ids(release, url, rev_1, rev_2):

    """Return svn change id dictionary.

    Returns a dictionary where keys are change ids and values

    are list of svn revisions where the change is made.

    """

    change_id_keyword = "changeid\s*" # Matches to change ids with no release.

    if not release is None:

        # Matches to change ids for given release only.

        change_id_keyword = "changeid[_-]?" + release + "\s*"

    re_rev = re.compile("^r(\d+) \| ", re.I | re.M)

    re_change_id = re.compile("(\w+\#\d+)\s*,?", re.I | re.M)

    re_change_id_keyword = re.compile(change_id_keyword + "[:=]?\s*(\w+\#\d+)",

                                      re.I | re.M)

    re_change_id_keyword_only = re.compile(change_id_keyword, re.I | re.M)

    svn_change_ids = {}

    cmd = "svn log -r " + rev_2 + ":" + rev_1 + " " + url

    #print cmd

    for line in os.popen(cmd).readlines():

        rev = re_rev.findall(line)

        if rev:

            current_rev = rev[0]

        change_ids = re_change_id_keyword.findall(line)

        change_id_keywords = re_change_id_keyword_only.findall(line)

        if len(change_id_keywords) > len(change_ids):

            print "WARNING: Rev " + current_rev + \

                " has more matching changeid keywords" + \

                " than matching change ids."

        while change_ids:

            for change_id in change_ids:

                if change_id in svn_change_ids:

                    if not current_rev in svn_change_ids[change_id]:

                        svn_change_ids[change_id] += [current_rev]

                else:

                    svn_change_ids[change_id] = [current_rev]

            line = re_change_id.sub("", line, 1)

            change_ids = re_change_id_keyword.findall(line)

    return svn_change_ids

if __name__ == "__main__":

    main()