#!/usr/bin/env python
import sys
import ecmwfapi
import re
import os

if len(sys.argv) > 1:
    req = file(sys.argv[1]).read()
else:
    req = sys.stdin.read()

if "WEBMARS_TARGET" in os.environ:
    target = os.environ["WEBMARS_TARGET"]
else:
    m = re.search('\\btar(g(e(t)?)?)?\s*=\s*([^\'",\s]+|"[^"]*"|\'[^\']*\')', req, re.I|re.M)
    if m is None:
        raise Exception("Cannot extract target")

    target=m.group(4)
    if target is None:
        raise Exception("Cannot extract target")

if target[0] == target[-1]:
    if target[0] in ['"', "'"]:
        target = target[1:-1]

c = ecmwfapi.ECMWFService("mars")
c.execute(req, target)