/usr/lib/python2.7/dist-packages/curtin/config.py is in python-curtin 0.1.0~bzr365-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | # Copyright (C) 2013 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.com>
#
# Curtin is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# Curtin is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
# more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Curtin. If not, see <http://www.gnu.org/licenses/>.
import yaml
import json
ARCHIVE_HEADER = "#curtin-config-archive"
ARCHIVE_TYPE = "text/curtin-config-archive"
CONFIG_HEADER = "#curtin-config"
CONFIG_TYPE = "text/curtin-config"
try:
# python2
_STRING_TYPES = (str, basestring, unicode)
except NameError:
# python3
_STRING_TYPES = (str,)
def merge_config_fp(cfgin, fp):
merge_config_str(cfgin, fp.read())
def merge_config_str(cfgin, cfgstr):
cfg2 = yaml.safe_load(cfgstr)
if not isinstance(cfg2, dict):
raise TypeError("Failed reading config. not a dictionary: %s" % cfgstr)
merge_config(cfgin, cfg2)
def merge_config(cfg, cfg2):
# update cfg by merging cfg2 over the top
for k, v in cfg2.items():
if isinstance(v, dict) and isinstance(cfg.get(k, None), dict):
merge_config(cfg[k], v)
else:
cfg[k] = v
def merge_cmdarg(cfg, cmdarg, delim="/"):
merge_config(cfg, cmdarg2cfg(cmdarg, delim))
def cmdarg2cfg(cmdarg, delim="/"):
if '=' not in cmdarg:
raise ValueError('no "=" in "%s"' % cmdarg)
key, val = cmdarg.split("=", 1)
cfg = {}
cur = cfg
is_json = False
if key.startswith("json:"):
is_json = True
key = key[5:]
items = key.split(delim)
for item in items[:-1]:
cur[item] = {}
cur = cur[item]
if is_json:
try:
val = json.loads(val)
except (ValueError, TypeError):
raise ValueError("setting of key '%s' had invalid json: %s" %
(key, val))
# this would occur if 'json:={"topkey": "topval"}'
if items[-1] == "":
cfg = val
else:
cur[items[-1]] = val
return cfg
def load_config_archive(content):
archive = yaml.load(content)
config = {}
for part in archive:
if isinstance(part, (str,)):
if part.startswith(ARCHIVE_HEADER):
merge_config(config, load_config_archive(part))
elif part.startswith(CONFIG_HEADER):
merge_config_str(config, part)
elif isinstance(part, dict) and isinstance(part.get('content'), str):
payload = part.get('content')
if (part.get('type') == ARCHIVE_TYPE or
payload.startswith(ARCHIVE_HEADER)):
merge_config(config, load_config_archive(payload))
elif (part.get('type') == CONFIG_TYPE or
payload.startswith(CONFIG_HEADER)):
merge_config_str(config, payload)
return config
def load_config(cfg_file):
with open(cfg_file, "r") as fp:
content = fp.read()
if not content.startswith(ARCHIVE_HEADER):
return yaml.safe_load(content)
else:
return load_config_archive(content)
def load_command_config(args, state):
if hasattr(args, 'config') and args.config:
return args.config
else:
# state 'config' points to a file with fully rendered config
cfg_file = state.get('config')
if not cfg_file:
cfg = {}
else:
cfg = load_config(cfg_file)
return cfg
def dump_config(config):
return yaml.dump(config, default_flow_style=False, indent=2)
def value_as_boolean(value):
if value in (False, None, '0', 0, 'False', 'false', ''):
return False
return True
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