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  $   ˆl–Ðz¾”ji?u4 \¸î*bÑ¿Ç„YxÆÁÄ ?÷     # This file is part of cloud-init. See LICENSE file for license information.

import copy
import glob
import logging
import os
import re
from contextlib import suppress
from typing import Optional

from cloudinit import performance, subp, util
from cloudinit.net import ParserError, renderer, subnet_is_ipv6
from cloudinit.net.network_state import NetworkState

LOG = logging.getLogger(__name__)

NET_CONFIG_COMMANDS = [
    "pre-up",
    "up",
    "post-up",
    "down",
    "pre-down",
    "post-down",
]

NET_CONFIG_BRIDGE_OPTIONS = [
    "bridge_ageing",
    "bridge_bridgeprio",
    "bridge_fd",
    "bridge_gcinit",
    "bridge_hello",
    "bridge_maxage",
    "bridge_maxwait",
    "bridge_stp",
]

NET_CONFIG_OPTIONS = [
    "address",
    "netmask",
    "broadcast",
    "network",
    "metric",
    "gateway",
    "pointtopoint",
    "media",
    "mtu",
    "hostname",
    "leasehours",
    "leasetime",
    "vendor",
    "client",
    "bootfile",
    "server",
    "hwaddr",
    "provider",
    "frame",
    "netnum",
    "endpoint",
    "local",
    "ttl",
]


# TODO: switch valid_map based on mode inet/inet6
def _iface_add_subnet(iface, subnet):
    content = []
    valid_map = [
        "address",
        "netmask",
        "broadcast",
        "metric",
        "gateway",
        "pointopoint",
        "mtu",
        "scope",
        "dns_search",
        "dns_nameservers",
    ]
    for key, value in subnet.items():
        if key == "netmask":
            continue
        if key == "address":
            value = "%s/%s" % (subnet["address"], subnet["prefix"])
        if value and key in valid_map:
            if isinstance(value, list):
                value = " ".join(value)
            if "_" in key:
                key = key.replace("_", "-")
            content.append("    {0} {1}".format(key, value))

    return sorted(content)


# TODO: switch to valid_map for attrs
def _iface_add_attrs(iface, index, ipv4_subnet_mtu):
    # If the index is non-zero, this is an alias interface. Alias interfaces
    # represent additional interface addresses, and should not have additional
    # attributes. (extra attributes here are almost always either incorrect,
    # or are applied to the parent interface.) So if this is an alias, stop
    # right here.
    if index != 0:
        return []
    content = []
    ignore_map = [
        "control",
        "device_id",
        "driver",
        "index",
        "inet",
        "mode",
        "name",
        "subnets",
        "type",
    ]

    # The following parameters require repetitive entries of the key for
    # each of the values
    multiline_keys = [
        "bridge_pathcost",