nvda_slave.pyw
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"""NVDA slave process
Performs miscellaneous tasks which need to be performed in a separate process.
"""
import pythonMonkeyPatches
import sys
import os
import logHandler
if hasattr(sys, "frozen"):
# Error messages (which are only for debugging) should not cause the py2exe log message box to appear.
sys.stderr = sys.stdout
#Many functions expect the current directory to be where slave is located (#2391)
os.chdir(sys.prefix)
def main():
import installer
try:
action = sys.argv[1]
except IndexError:
sys.exit("No action")
args = sys.argv[2:]
try:
if action == "service_NVDALauncher":
import nvda_service
nvda_service.nvdaLauncher()
elif action=="install":
installer.install(bool(int(args[0])),bool(int(args[1])))
elif action=="unregisterInstall":
import installer
installer.unregisterInstallation()
elif action=="launchNVDA":
import subprocess
import shellapi
import winUser
shellapi.ShellExecute(0,None,
ur"%s\nvda.exe"%sys.exec_prefix.decode("mbcs"),
subprocess.list2cmdline(args).decode("mbcs"),
None,winUser.SW_SHOWNORMAL)
elif action=="setNvdaSystemConfig":
import config
config._setSystemConfig(args[0].decode('mbcs'))
elif action == "config_setStartOnLogonScreen":
enable = bool(int(args[0]))
import config
config._setStartOnLogonScreen(enable)
elif action == "installer_installService":
import nvda_service
nvdaDir = os.path.dirname(sys.argv[0])
nvda_service.installService(nvdaDir)
nvda_service.startService()
elif action == "installer_uninstallService":
import nvda_service
try:
nvda_service.stopService()
except:
pass
nvda_service.removeService()
elif action == "explore_userConfigPath":
import config
path=config.getUserDefaultConfigPath()
if not path:
raise ValueError("no user default config path")
config.initConfigPath(path)
import shellapi
import winUser
shellapi.ShellExecute(0,None,path,None,None,winUser.SW_SHOWNORMAL)
elif action == "addons_installAddonPackage":
try:
addonPath=unicode(args[0], "mbcs")
except IndexError:
raise ValueError("Addon path was not provided.")
#Load nvdaHelperRemote.dll but with an altered search path so it can pick up other dlls in lib
import ctypes
h=ctypes.windll.kernel32.LoadLibraryExW(os.path.abspath(ur"lib\nvdaHelperRemote.dll"),0,0x8)
remoteLib=ctypes.WinDLL("nvdaHelperRemote",handle=h)
ret = remoteLib.nvdaControllerInternal_installAddonPackageFromPath(addonPath)
if ret != 0:
import winUser
winUser.MessageBox(0,
# Translators: the message that is shown when the user tries to install an add-on from windows explorer and NVDA is not running.
_("Cannot install NVDA add-on from {path}.\n"
"You must be running NVDA to be able to install add-ons.").format(path=addonPath),
0, winUser.MB_ICONERROR)
elif action == "comGetActiveObject":
import comHelper
# py2exe scraps sys.stdout.
sys.__stdout__.write("%s\n" %
comHelper._lresultFromGetActiveObject(args[0], bool(int(args[1]))))
sys.__stdout__.flush()
try:
raw_input()
except EOFError:
pass
else:
raise ValueError("No such action")
except installer.RetriableFailure:
logHandler.log.error("Task failed, try again",exc_info=True)
sys.exit(2)
except Exception, e:
logHandler.log.error("slave error",exc_info=True)
sys.exit(1)
if __name__ == "__main__":
logHandler.initialize(True)
logHandler.log.setLevel(0)
import languageHandler
languageHandler.setLanguage("Windows")
main()