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# -*- coding: utf-8 -*-
from defaults import *
try:
import gconf
import gobject
except ImportError:
haveGConfSupport = False
_notifiers = {}
_values = {}
import xml.dom.minidom
document = None
try:
document = xml.dom.minidom.parse(CONFIG_FILE)
except IOError:
pass
except xml.parsers.expat.ExpatError:
print 'Configuration at ' + CONFIG_FILE + ' is invalid, ignoring'
else:
print 'Loading configuration from ' + CONFIG_FILE
def _bool(string):
return string == 'True'
valueTypes = {'int': int, 'bool': _bool, 'float': float, 'str': str}
if document is not None:
elements = document.getElementsByTagName('config')
for e in elements:
for n in e.getElementsByTagName('value'):
try:
name = n.attributes['name'].nodeValue
except KeyError:
continue
try:
valueType = n.attributes['type'].nodeValue
except KeyError:
continue
if len(n.childNodes) != 1 or n.childNodes[0].nodeType != n.TEXT_NODE:
continue
valueString = n.childNodes[0].nodeValue
try:
value = valueTypes[valueType](valueString)
except KeyError:
continue
_values[name] = value
else:
haveGConfSupport = True
_GCONF_DIR = '/apps/glchess/'
_config = gconf.client_get_default()
try:
_config.add_dir(_GCONF_DIR[:-1], gconf.CLIENT_PRELOAD_NONE)
except gobject.GError:
pass
_gconfGetFunction = {gconf.VALUE_BOOL: gconf.Value.get_bool,
gconf.VALUE_FLOAT: gconf.Value.get_float,
gconf.VALUE_INT: gconf.Value.get_int,
gconf.VALUE_STRING: gconf.Value.get_string}
_gconfSetFunction = {bool: _config.set_bool,
float: _config.set_float,
int: _config.set_int,
str: _config.set_string,
unicode: _config.set_string}
# Config default values
_defaults = {'show_toolbar': True,
'show_history': True,
'maximised': False,
'fullscreen': False,
'show_3d': False,
'show_3d_smooth': False,
'show_move_hints': True,
'move_format': 'human',
'promotion_type': 'queen',
'board_view': 'human',
'show_comments': False,
'show_numbering': False,
'enable_networking': True,
'load_directory': '',
'save_directory': '',
'new_game_dialog/move_time': 0,
'new_game_dialog/white/type': '',
'new_game_dialog/white/difficulty': '',
'new_game_dialog/black/type': '',
'new_game_dialog/black/difficulty': ''}
class Error(Exception):
"""Exception for configuration use"""
pass
def get(name):
"""Get a configuration value.
'name' is the name of the value to get (string).
Raises an Error exception if the value does not exist.
"""
if haveGConfSupport:
try:
entry = _config.get(_GCONF_DIR + name)
except gobject.GError:
entry = None
if entry is None:
try:
return _defaults[name]
except KeyError:
raise Error('No config value: ' + repr(name))
try:
function = _gconfGetFunction[entry.type]
except KeyError:
raise Error('Unknown value type')
return function(entry)
else:
try:
return _values[name]
except KeyError:
try:
return _defaults[name]
except KeyError:
raise Error('No config value: ' + repr(name))
def set(name, value):
"""Set a configuration value.
'name' is the name of the value to set (string).
'value' is the value to set to (int, str, float, bool).
"""
if haveGConfSupport:
try:
function = _gconfSetFunction[type(value)]
except KeyError:
raise TypeError('Only config values of type: int, str, float, bool supported')
else:
try:
function(_GCONF_DIR + name, value)
except gobject.GError:
pass
else:
# Debounce
try:
oldValue = _values[name]
except KeyError:
pass
else:
if oldValue == value:
return
# Use new value and notify watchers
_values[name] = value
try:
watchers = _notifiers[name]
except KeyError:
pass
else:
for func in watchers:
func(name, value)
# Save configuration
_save()
def default(name):
set(name, _defaults[name])
def _watch(client, _, entry, (function, name)):
value = get(name)
function(name, value)
def watch(name, function):
"""
"""
if haveGConfSupport:
try:
_config.notify_add(_GCONF_DIR + name, _watch, (function, name))
except gobject.GError:
pass
else:
try:
watchers = _notifiers[name]
except KeyError:
watchers = _notifiers[name] = []
watchers.append(function)
def _save():
"""Save the current configuration"""
if haveGConfSupport:
return
document = xml.dom.minidom.Document()
e = document.createComment('Automatically generated by glChess, do not edit!')
document.appendChild(e)
root = document.createElement('config')
document.appendChild(root)
valueNames = {int: 'int', bool: 'bool', float: 'float', str: 'str', unicode: 'str'}
names = _values.keys()
names.sort()
for name in names:
value = _values[name]
e = document.createElement('value')
root.appendChild(e)
e.setAttribute('name', name)
e.setAttribute('type', valueNames[type(value)])
valueElement = document.createTextNode(str(value))
e.appendChild(valueElement)
try:
f = file(CONFIG_FILE, 'w')
except IOError:
pass
else:
document.writexml(f)
f.close()
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