#!/usr/bin/env python

 import sys

 import xmlrpclib

 import time

 import re

 # Neos server config

 NEOS_HOST="neos.mcs.anl.gov"

 NEOS_PORT=3332

 if len(sys.argv) < 3 or len(sys.argv) > 3:

   sys.stderr.write("Usage: NeosCSDPClient <input_filename> <output_filename>\n")

   sys.exit(1)

 neos=xmlrpclib.Server("http://%s:%d" % (NEOS_HOST, NEOS_PORT))

 inputfile = open(sys.argv[1],"r")

 xml_pre = "<document>\n<category>sdp</category>\n<solver>csdp</solver>\n<inputMethod>SPARSE_SDPA</inputMethod>\n<dat><![CDATA["

 xml_post = "]]></dat>\n</document>\n"

 xml = xml_pre

 buffer = 1

 while buffer:

   buffer = inputfile.read()

   xml += buffer

 inputfile.close()

 xml += xml_post

 (jobNumber,password) = neos.submitJob(xml)

 if jobNumber == 0:

   sys.stdout.write("error submitting job: %s" % password)

   sys.exit(20)

 else:

   sys.stdout.write("jobNumber = %d\tpassword = %s\n" % (jobNumber,password))

 offset=0

 messages = ""

 status="Waiting"

 while status == "Running" or status=="Waiting":

   time.sleep(1)

   (msg,offset) = neos.getIntermediateResults(jobNumber,password,offset)

   messages += msg.data

   sys.stdout.write(msg.data)

   status = neos.getJobStatus(jobNumber, password)

 msg = neos.getFinalResults(jobNumber, password).data

 sys.stdout.write("---------- Begin CSDP Output -------------\n");

 sys.stdout.write(msg)

 # extract solution

 result = msg.split("Solution:")

 if len(result) > 1:

   output = open(sys.argv[2],"w")

   output.write(result[1].strip())

   output.close()

 # extract return code

 p = re.compile(r"^Error: Command exited with non-zero status (\d+)$", re.MULTILINE)

 m = p.search(messages)

 if m:

   sys.exit(int(m.group(1)))

 else:

   sys.exit(0)