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stacks-puppet-node/blockstack_cli_0.14.1/rpc/config.py

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2.9 KiB
Python

# -*- coding: utf-8 -*-
#-----------------------
# Open Name System
# ~~~~~
#
# :copyright: (c) 2014 by opennamesystem.org
# :license: MIT, see LICENSE for more details.
#-----------------------
# Previous copyright, from bitcoin-python:
# Copyright (c) 2010 Witchspace <witchspace81@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""
Utilities for reading namecoin configuration files.
"""
def read_config_file(filename):
"""
Read a simple ``'='``-delimited config file.
Raises :const:`IOError` if unable to open file, or :const:`ValueError`
if an parse error occurs.
"""
f = open(filename)
try:
cfg = {}
for line in f:
line = line.strip()
if line and not line.startswith("#"):
try:
(key, value) = line.split('=', 1)
cfg[key] = value
except ValueError:
pass # Happens when line has no '=', ignore
finally:
f.close()
return cfg
def read_default_config(filename=None):
"""
Read namecoin default configuration from the current user's home directory.
Arguments:
- `filename`: Path to a configuration file in a non-standard location (optional)
"""
if filename is None:
import os
import platform
home = os.getenv("HOME")
if not home:
raise IOError("Home directory not defined, don't know where to look for config file")
if platform.system() == "Darwin":
location = 'Library/Application Support/Namecoin/namecoin.conf'
else:
location = '.namecoin/namecoin.conf'
filename = os.path.join(home, location)
elif filename.startswith("~"):
import os
filename = os.path.expanduser(filename)
try:
return read_config_file(filename)
except (IOError, ValueError):
pass # Cannot read config file, ignore