configure

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from argparse import ArgumentParser, Action

class UppercaseAction(Action):
    def __call__(self, parser, namespace, values, option_string=None):
        setattr(namespace, self.dest, values.upper())

parser = ArgumentParser(description='Configure script')
parser.add_argument('--library', default='XMLSERVICE', action=UppercaseAction, help='Output library')
parser.add_argument('--debug', default='*ALL', help='Debug option (DBGVIEW)')
parser.add_argument('--target-release', default='*CURRENT', help='Target release (TGTRLS)')
args = parser.parse_args()

# Map command line arguments to replacement variables
# ie. --foo -> '@FOO@': args.foo
mappings = { '@' + k.upper() + '@': v for k,v in vars(args).items() }

files_to_map = (
    'src/plugconf.rpgle',
    'src/xmlstoredp.sql',
    'Makefile',
)

for f in files_to_map:
    with open(f + ".in", "r") as _in, open(f, "w") as _out:
        for line in _in:
            for k,v in mappings.items():
                line = line.replace(k, v)

            print(line, end='', file=_out)