139 lines
3.7 KiB
Python
139 lines
3.7 KiB
Python
# -*- python-mode -*-
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# -*- coding: UTF-8 -*-
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## Copyright (C) 2012-2013 Daniel Pavel
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License along
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## with this program; if not, write to the Free Software Foundation, Inc.,
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## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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import os as _os
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import os.path as _path
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from json import dump as _json_save
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from json import load as _json_load
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from logging import DEBUG as _DEBUG
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from logging import INFO as _INFO
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from logging import getLogger
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from solaar import __version__
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_log = getLogger(__name__)
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del getLogger
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_XDG_CONFIG_HOME = _os.environ.get('XDG_CONFIG_HOME') or _path.expanduser(
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_path.join('~', '.config'))
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_file_path = _path.join(_XDG_CONFIG_HOME, 'solaar', 'config.json')
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_KEY_VERSION = '_version'
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_KEY_NAME = '_name'
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_configuration = {}
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def _load():
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if _path.isfile(_file_path):
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loaded_configuration = {}
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try:
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with open(_file_path, 'r') as config_file:
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loaded_configuration = _json_load(config_file)
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except:
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_log.error('failed to load from %s', _file_path)
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# loaded_configuration.update(_configuration)
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_configuration.clear()
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_configuration.update(loaded_configuration)
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if _log.isEnabledFor(_DEBUG):
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_log.debug('load => %s', _configuration)
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_cleanup(_configuration)
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_configuration[_KEY_VERSION] = __version__
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return _configuration
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def save():
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# don't save if the configuration hasn't been loaded
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if _KEY_VERSION not in _configuration:
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return
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dirname = _os.path.dirname(_file_path)
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if not _path.isdir(dirname):
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try:
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_os.makedirs(dirname)
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except:
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_log.error('failed to create %s', dirname)
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return False
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_cleanup(_configuration)
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try:
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with open(_file_path, 'w') as config_file:
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_json_save(_configuration,
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config_file,
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skipkeys=True,
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indent=2,
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sort_keys=True)
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if _log.isEnabledFor(_INFO):
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_log.info('saved %s to %s', _configuration, _file_path)
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return True
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except:
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_log.error('failed to save to %s', _file_path)
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def _cleanup(d):
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# remove None values from the dict
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for key in list(d.keys()):
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value = d.get(key)
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if value is None:
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del d[key]
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elif isinstance(value, dict):
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_cleanup(value)
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def _device_key(device):
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return '%s:%s' % (device.wpid, device.serial)
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class _DeviceEntry(dict):
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def __init__(self, *args, **kwargs):
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super(_DeviceEntry, self).__init__(*args, **kwargs)
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def __setitem__(self, key, value):
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super(_DeviceEntry, self).__setitem__(key, value)
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save()
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def _device_entry(device):
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if not _configuration:
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_load()
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device_key = _device_key(device)
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c = _configuration.get(device_key) or {}
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if not isinstance(c, _DeviceEntry):
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c[_KEY_NAME] = device.name
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c = _DeviceEntry(c)
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_configuration[device_key] = c
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return c
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def attach_to(device):
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"""Apply the last saved configuration to a device."""
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if not _configuration:
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_load()
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persister = _device_entry(device)
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device.persister = persister
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