#!/usr/bin/env python

"""
Usage:
      update-changes.py [instance] file_containing_list_of_changes

instance defaults to 1 if not given.

This script simply forces an update on all changelists in the file passed in.

The SetCFOptions-forced.py trigger adds the Type: restricted field on the update.

Generate changes file with:

p4 changes | cut -d " " -f 2 > changes.txt

"""

USAGE = """
Usage:
  update-changes.py [instance] <textfile>
        
textfile should be a file containing 1 changelist number per line.

instance defaults to 1 if not given.
"""

import os
import re
import string
import sys
import time
import platform
import sdputils

if len(sys.argv) > 2:
  SDP_INSTANCE = str(sys.argv[1])
else:
  SDP_INSTANCE = '1'

utils = sdputils.SDPUtils(SDP_INSTANCE)
p4 = utils.p4
utils.login()

if len(sys.argv) < 2:
  print (USAGE)
  sys.exit(1)

# Handle optional instance parameter shift.
if len(sys.argv) > 2:
  changes_file = sys.argv[2]
else:
  changes_file = sys.argv[1]

try:
  input = open(changes_file, "r" )
except:
  print("Unable to open file %s." % changes_file )
  sys.exit (2)

for line in input.readlines():
  line = line.rstrip()
  line = '%s change -o "%s" > temp.txt' % (p4, line)
  os.system (line)
  os.system ('%s change -f -i < temp.txt' % p4)

input.close()
os.remove('temp.txt')