#!/usr/bin/env python3
#
# Copyright (c) 2023 Paul Mattes.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the names of Paul Mattes nor the names of his contributors
#       may be used to endorse or promote products derived from this software
#       without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY PAUL MATTES "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL PAUL MATTES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# x3270 test target host, overrideable options.

from typing import Dict, Any

class oopts():
    '''Overrideable options'''
    def __init__(self, opts: Dict[str, Any]):
        self.opts = opts
        self.overrides = {}

    def override(self, key: str, value: Any):
        '''Override an option'''
        self.overrides[key] = value

    def get(self, key: str, default: str=None) -> Any:
        '''Get an option'''
        if key in self.overrides:
            return self.overrides[key]
        if key in self.opts:
            return self.opts[key]
        return default

def clone(source: oopts) -> oopts:
    '''Clone a set of options'''
    d = {}
    for o in source.opts:
        d[o] = source.opts[o]
    for o in source.overrides:
        d[o] = source.overrides[o]
    return oopts(d)
