# 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 "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: 

import sys, re

if len(sys.argv) not in (2, 3):

    print "Expected 1 or 2 arguments: "

    print "  <target_file> <revision> - Set revision to the supplied value"

    print "  <target_file>            - Set revision to ''"

    sys.exit(1)

filename = sys.argv[1]

if len(sys.argv) == 3:

    svnrevision = sys.argv[2]

    # Use the revision provided from command line only if it's valid

    if re.match('^[0-9]+(:[0-9]+)?M?S?$', svnrevision) is None:

        svnrevision = ''

else:

    svnrevision = ''

f = open(filename, "rt")

lines = f.readlines()

f.close()

# Replace the line with the svn revision variable

replaced = False

for i, line in enumerate(lines):

    if line.startswith('_svnrevision = "'):

        lines[i] = '_svnrevision = "%s"' % svnrevision

        replaced = True

    else:

        lines[i] = line.rstrip('\r\n')

if replaced:

    f = open(filename, "wt")

    for line in lines:

        print >>f, line

    f.close()

    print "Revision updated to '%s'" % svnrevision

else:

    print "Revision not updated: _svnrevision not found"