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# vim:set et sts=4 sw=4:
#
# ibus - The Input Bus
#
# Copyright (c) 2007-2008 Huang Peng <shawn.p.huang@gmail.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA 02111-1307 USA
import os
from os import path
import signal
import glob
import ibus
import locale
locale.setlocale(locale.LC_ALL, "")
LANG = tuple()
try:
LANG = locale.getlocale()[0], locale.getlocale()[0].split("_")[0]
except:
pass
IBUS_DATAROOTDIR = os.getenv("IBUS_DATAROOTDIR")
class Engine(ibus.Object):
def __init__(self, name, local_name, lang = "other", icon = "", author = "", credits = "", _exec = "", pid = 0):
super(Engine, self).__init__()
self.name = name
self.local_name = local_name
self.lang = lang
self.icon = icon
self.author = author
self.credits = credits
self._exec = _exec
self.pid = pid
def start(self):
if self.pid != 0:
return
pid = os.fork()
if pid > 0: # parent
self.pid = pid
elif pid == 0: # child
os.setpgrp()
args = self._exec.split()
os.execv(args[0], args)
sys.exit(1)
def stop(self, force = False):
if self.pid == 0:
return
try:
if force:
os.kill(-self.pid, signal.SIGKILL)
else:
os.kill(-self.pid, signal.SIGTERM)
except:
pass
def engine_exit(self, pid):
if self.pid == pid:
self.pid = 0
return True
return False
def __eq__(self, o):
# We don't test icon author & credits
return self.name == o.name and \
self.lang == o.lang and \
self._exec == o._exec
def __str__(self):
return "Engine('%s', '%s', '%s', '%s', '%s', '%s', '%s', %d" % (self.name, self.local_name, self.lang, \
self.icon, self.author, \
self.credits, self._exec, \
self.pid)
class Register(ibus.Object):
def __init__(self):
super(Register, self).__init__()
self.__engines = dict()
self.__load()
signal.signal(signal.SIGCHLD, self.__sigchld_cb)
def start_engine(self, lang, name):
key = (lang, name)
if key not in self.__engines:
raise ibus.IBusException("Can not find engine(%s, %s)" % (lang, name))
engine = self.__engines[(lang, name)]
engine.start()
def stop_engine(self, lang, name):
key = (lang, name)
if key not in self.__engines:
raise ibus.IBusException("Can not find engine(%s, %s)" % (lang, name))
engine = self.__engines[(lang, name)]
engine.stop()
def restart_engine(self, lang, name):
key = (lang, name)
if key not in self.__engines:
raise ibus.IBusException("Can not find engine (%s, %s)" % (lang, name))
engine = self.__engines[(lang, name)]
engine.stop()
engine.start()
def list_engines(self):
engines = []
for key, e in self.__engines.items():
engines.append((e.name, e.local_name, e.lang, e.icon, e.author, e.credits, e._exec, e.pid != 0))
return engines
def reload_engines(self):
self.__load()
def __sigchld_cb(self, sig, f):
pid, state = os.wait()
for key, engine in self.__engines.items():
if engine.engine_exit(pid):
break
def __load(self):
_dir = path.join(IBUS_DATAROOTDIR, "ibus/engine")
for _file in glob.glob(_dir + "/*.engine"):
engine = self.__load_engine(_file)
if (engine.lang, engine.name) in self.__engines:
old_engine = self.__engines[(engine.lang, engine.name)]
if old_engine == engine:
engine.pid = old_engine.pid
self.__engines[(engine.lang, engine.name)] = engine
else:
self.__engines[(engine.lang, engine.name + " (old)")] = old_engine
self.__engines[(engine.lang, engine.name)] = engine
else:
self.__engines[(engine.lang, engine.name)] = engine
def __load_engine(self, _file):
f = file(_file)
name = None
local_name = None
lang = "other"
icon = ""
author = ""
credits = ""
_exec = None
line = 0
for l in f:
line += 1
l = l.strip()
if l.startswith("#"):
continue
n, v = l.split("=")
if n == "Name":
name = v
if local_name == None:
local_name = name
elif n.startswith("Name."):
if n[5:] in LANG:
local_name = v
elif n == "Lang":
lang = v
elif n == "Icon":
icon = v
elif n == "Author":
author = v
elif n == "Credits":
credits = v
elif n == "Exec":
_exec = v
else:
raise Exception("%s:%d\nUnknown value name = %s" % (_file, line, n))
if name == None:
raise Exception("%s: no name" % _file)
if _exec == None:
raise Exception("%s: no exec" % _file)
return Engine(name, local_name, lang, icon, author, credits, _exec)
if __name__ == "__main__":
import time
reg = Register()
reg.start_engine("zh", "py")
time.sleep(3)
reg.stop_engine("zh", "py")
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