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terminator/terminatorconfig.py

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#!/usr/bin/python
# TerminatorConfig - layered config classes
# Copyright (C) 2006-2008 cmsj@tenshu.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 2 only.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""TerminatorConfig by Chris Jones <cmsj@tenshu.net>
The config scheme works in layers, with defaults at the base,
and a simple/flexible class which can be placed over the top
in multiple layers. This was written for Terminator, but
could be used generically. Its original use is to guarantee
default values for any config item, while allowing them to be
overridden by at least two other stores of configuration values.
Those being gconf and a plain config file.
In addition to the value, the default layer must also provide
the datatype (str, int, float and bool are currently supported).
values are found as attributes of the TerminatorConfig object.
Trying to read a value that doesn't exist will raise an
AttributeError. This is by design. If you want to look something
up, set a default for it first."""
# import standard python libs
import os, sys
# import unix-lib
import pwd
# set this to true to enable debugging output
debug = True
def dbg (log = ""):
if debug:
print >> sys.stderr, log
class TerminatorConfig:
callback = None
sources = []
def __init__ (self, sources = []):
for source in sources:
if isinstance(source, TerminatorConfValuestore):
self.sources.append (source)
# We always add a default valuestore last so no valid config item ever goes unset
source = TerminatorConfValuestoreDefault ()
self.sources.append (source)
def __getattr__ (self, keyname):
dbg ("Config: Looking for: %s"%keyname)
for source in self.sources:
try:
val = getattr (source, keyname)
dbg ("Config: got: %s from a %s"%(val, source.type))
return (val)
except:
dbg ("Config: no value found in %s."%source.type)
pass
dbg ("Config: Out of sources")
raise (AttributeError)
def set_reconfigure_callback (self, function):
self.reconfigure_callback = function
return (True)
class TerminatorConfValuestore:
type = "Base"
values = {}
reconfigure_callback = None
# Our settings
# FIXME: Is it acceptable to not explicitly store the type, but
# instead infer it from defaults[key].__class__.__name__
defaults = {
'gt_dir' : [str, '/apps/gnome-terminal'],
'profile_dir' : [str, '/apps/gnome-terminal/profiles'],
'titlebars' : [bool, True],
'titletips' : [bool, False],
'allow_bold' : [bool, False],
'silent_bell' : [bool, True],
'background_color' : [str, '#000000'],
'background_darkness' : [float, 0.5],
'background_type' : [str, 'solid'],
'backspace_binding' : [str, 'ascii-del'],
'delete_binding' : [str, 'delete-sequence'],
'cursor_blink' : [bool, False],
'emulation' : [str, 'xterm'],
'font' : [str, 'Serif 10'],
'foreground_color' : [str, '#AAAAAA'],
'scrollbar_position' : [str, "right"],
'scroll_background' : [bool, True],
'scroll_on_keystroke' : [bool, False],
'scroll_on_output' : [bool, False],
'scrollback_lines' : [int, 100],
'focus' : [str, 'sloppy'],
'exit_action' : [str, 'close'],
'palette' : [str, '#000000000000:#CDCD00000000:#0000CDCD0000:#CDCDCDCD0000:#30BF30BFA38E:#A53C212FA53C:#0000CDCDCDCD:#FAFAEBEBD7D7:#404040404040:#FFFF00000000:#0000FFFF0000:#FFFFFFFF0000:#00000000FFFF:#FFFF0000FFFF:#0000FFFFFFFF:#FFFFFFFFFFFF'],
'word_chars' : [str, '-A-Za-z0-9,./?%&#:_'],
'mouse_autohide' : [bool, True],
}
def __getattr__ (self, keyname):
if self.values.has_key (keyname):
return self.values[keyname][1]
else:
raise (AttributeError)
class TerminatorConfValuestoreDefault (TerminatorConfValuestore):
def __init__ (self):
self.type = "Default"
self.values = self.defaults
class TerminatorConfValuestoreRC (TerminatorConfValuestore):
rcfilename = ""
#FIXME: use inotify to watch the rc, split __init__ into a parsing function
# that can be re-used when rc changes.
def __init__ (self):
self.type = "RCFile"
self.rcfilename = pwd.getpwuid (os.getuid ())[5] + "/.terminatorrc"
if os.path.exists (self.rcfilename):
rcfile = open (self.rcfilename)
rc = rcfile.readlines ()
rcfile.close ()
for item in rc:
try:
item = item.strip ()
if item and item[0] != '#':
(key, value) = item.split ("=")
dbg ("VS_RCFile: Setting value %s to %s"%(key, value))
self.values[key] = [self.defaults[key][0], self.defaults[key][0](value)]
except:
pass
class TerminatorConfValuestoreGConf (TerminatorConfValuestore):
profile = ""
client = None
def __init__ (self, profile = None):
self.type = "GConf"
self.client = gconf.client_get_default ()
# Grab a couple of values from base class to avoid recursing with our __getattr__
self._gt_dir = self.defaults['gt_dir'][1]
self._profile_dir = self.defaults['profile_dir'][1]
if not profile:
profile = self.client.get_string (self._gt_dir + '/global/default_profile')
profiles = self.client.get_list (self._gt_dir + '/global/profile_list','string')
if profile in profiles:
dbg ("VSGConf: Found profile '%s' in profile_list"%profile)
self.profile = '%s/%s'%(self._profile_dir, profile)
elif "Default" in profiles:
dbg ("VSGConf: profile '%s' not found, but 'Default' exists"%profile)
self.profile = '%s/%s'%(self._profile_dir, "Default")
else:
# We're a bit stuck, there is no profile in the list
# FIXME: Find a better way to handle this than setting a non-profile
dbg ("No profile found, deleting __getattr__")
del (self.__getattr__)
self.client.add_dir (self.profile, gconf.CLIENT_PRELOAD_RECURSIVE)
if self.on_gconf_notify:
self.client.notify_add (self.profile, self.on_gconf_notify)
self.client.add_dir ('/apps/metacity/general', gconf.CLIENT_PRELOAD_RECURSIVE)
self.client.notify_add ('/apps/metacity/general/focus_mode', self.on_gconf_notify)
def on_gconf_notify (self, client, cnxn_id, entry, what):
if self.reconfigure_callback:
self.reconfigure_callback ()
def __getattr__ (self, key = ""):
ret = None
dbg ('VSGConf: preparing: %s/%s'%(self.profile, key))
value = self.client.get ('%s/%s'%(self.profile, key))
dbg ('VSGConf: getting: %s'%value)
if value:
funcname = "get_" + self.defaults[key][0].__name__
# Special case for str
if funcname == "get_str":
funcname = "get_string"
typefunc = getattr (value, funcname)
ret = typefunc ()
return (ret)
else:
raise (AttributeError)
if __name__ == '__main__':
stores = []
stores.append (TerminatorConfValuestoreRC ())
try:
import gconf
stores.append (TerminatorConfValuestoreGConf ())
except:
pass
foo = TerminatorConfig (stores)
## cmsj: this is my testing ground
## ensure that font is set in the Default gconf profile
## set titlebars in the RC file
## remove titletips from gconf/RC
## do not define blimnle in any way
# This should come from gconf (it's set by gnome-terminal)
print foo.font
# This should come from RC
print foo.titlebars
# This should come from defaults
print foo.titletips
# This should raise AttributeError
print foo.blimnle
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