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#!/usr/bin/python3

from __future__ import with_statement

import os, sys, optparse
from ufl.algorithms import validate_form, ufl2latex, tree_format
from ufl.algorithms.formfiles import read_ufl_file

# Get commandline options

usage = """Convert a .ufl file to an executable .py file for debugging.

Example:

  ufl2py Poisson.ufl"""

def opt(long, short, t, default, help):
    return optparse.make_option("--%s" % long, "-%s" % short, action="store", type=t, dest=long, default=default, help=help)

option_list = []
#   opt("quiet", "q", "int", 1, "Do not print form information to screen."),
#   opt("write", "w", "int", 0, "Write form information to file."),
#   ]

parser = optparse.OptionParser(usage=usage, option_list=option_list)
args = sys.argv[1:]
(options, args) = parser.parse_args(args=args)

if not args:
    print("Missing files!")
    print()
    parser.print_usage()
    sys.exit(-1)
filenames = args

header = """#!/usr/bin/env python
# -*- coding: utf-8 -*-
from ufl import *
set_level(DEBUG)
"""

footer = ""

# Handle each form file separately
for filename in filenames:
    if not filename.endswith(".ufl"):
        print("Warning: Filename '%s' doesn't end with .ufl." % filename)

    # Read code
    fcode = read_ufl_file(filename)
    code = header + fcode + footer

    # Dump code to python file
    basename = os.path.splitext(os.path.basename(filename))[0]
    basename = "%s_debug" % basename
    pyname = "%s.py" % basename
    with file(pyname, "w") as f:
        f.write(code)