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orca
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2009-10-19
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#!/bin/sh
#
# Orca
#
# Copyright 2006-2008 Sun Microsystems Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
# Boston MA 02110-1301 USA.
# This script performs some clean up and will run Orca. It will also
# rerun Orca if it detects that Orca died an unnatural death.
# __id__ = "$Id: orca.in,v 1.22 2006/12/08 16:21:25 wwalker Exp $"
# __version__ = "$Revision: 1.22 $"
# __date__ = "$Date: 2006/12/08 16:21:25 $"
# __copyright__ = "Copyright (c) 2006-2008 Sun Microsystems Inc."
# __license__ = "LGPL"
# Set the user's $PATH for this script.
#
PATH="${PATH}:/usr/bin:/usr/sbin:/bin:/usr/X11R6/bin"
export PATH
# Save the arguments away.
#
ARGS="$*"
# Save away XMODMAP settings we might change.
#
saveXmodmap()
{
# We'll save and restore the Caps_Lock as a modifier just in case
# the user is using the Caps_Lock as the Orca modifier key. We
# will also do so with the KP_Insert key since we want to make
# sure it only produces the keysyms we expect (it produces
# KP_Insert and KP_0 by default). See the use of xmodmap in
# orca.py:loadUserSettings for the other part of what's going on.
#
# [[[WDW: we probably should save/restore the autorepeat value of
# the Orca modifier key and turn the autorepeat off when Orca is
# running. That can be done using the 'xset' utility, though
# turning it on/off is easy, but getting the current state is not
# straightforward.]]]
#
if [ "x$DISPLAY" != "x" ] ; then
CAPSLOCKSETTING=`xmodmap | grep Caps_Lock | cut -f1`
KPINSERTSETTING=`xmodmap -pke | grep KP_Insert`
INSERTSETTING=`xmodmap -pke | grep Insert | grep -v KP_`
fi
}
# Restore XMODMAP settings we may have changed.
#
restoreXmodmap()
{
if [ "x$CAPSLOCKSETTING" != "x" ] ; then
xmodmap -e "add $CAPSLOCKSETTING = Caps_Lock" > /dev/null 2>&1
fi
if [ "x$KPINSERTSETTING" != "x" ] ; then
xmodmap -e "$KPINSERTSETTING" > /dev/null 2>&1
fi
if [ "x$INSERTSETTING" != "x" ] ; then
xmodmap -e "$INSERTSETTING" > /dev/null 2>&1
fi
}
# Cleans up any orca-related processes that might be running,
# restricting it to those processes owned by the user. These include
# orca itself, any gnome-speech synthesis drivers, and festival
# processes running in server mode.
#
cleanup()
{
USERID=`id | cut -f2 -d= | cut -f1 -d\(`
PIDS=`ps -eo pid,ruid,args | grep $USERID | \
egrep "orca[.]orca|OAFIID[:]GNOME_Speech|OAFIID[:]GNOME_Magnifier|festival [-][-]server"|\
grep -v grep | awk '{ print $1 }'`
IFS='
'
PIDS=`echo $PIDS`
if [ "x$PIDS" != "x" ] ; then
kill -9 $PIDS > /dev/null 2>&1
fi
restoreXmodmap
}
trap cleanup HUP QUIT TERM INT ABRT
# Runs orca.
#
runOrca()
{
saveXmodmap
exec /usr/bin/python -c "import orca.orca; orca.orca.main()" "$ARGS"
restoreXmodmap
}
# Orca will fall into a text-based question and answer session if the
# user has not configured orca and/or accessibility yet. We will
# force that to happen in the foreground (i.e., RUNONCE=true). In
# addition, if the user passes any command line arguments to orca, we
# will run it in the foreground as well to avoid a situation where
# orca dumps itself into the text-based setup utility.
#
# We make a special exception for gdm, which is used to handle the
# accessible login. If we're running as gdm, we assume everything is
# all set and we don't need to muck around.
#
if [ "x$LOGNAME" != "xgdm" ] ; then
if [ "$1" = "-sudo" ]; then
shift
ACCESSIBILITY_ENABLED=`sudo -u "$1" gconftool-2 \
--get /desktop/gnome/interface/accessibility`
shift
ARGS="$*"
else
ACCESSIBILITY_ENABLED=`gconftool-2 \
--get /desktop/gnome/interface/accessibility`
fi
if [ "x$ACCESSIBILITY_ENABLED" != "xtrue" ] ; then
# Because we will be running Orca in text-setup mode, we want to
# make sure it is run in a terminal window. If we're already in
# a terminal, this is great. If not, we spawn a gnome-terminal
# and run orca in it.
#
tty -s && IN_TTY="true" || IN_TTY="false"
if [ "x$IN_TTY" = "xfalse" ] ; then
exec gnome-terminal -x $0 $ARGS
exit
fi
fi
fi
if echo "$ARGS" | grep -- "-q" > /dev/null; then
# If the user has done -q or --quit, that means to tell any
# existing orca process to quit. So, we just do a cleanup.
#
cleanup
else
# If the user passed in a flag that results in orca only
# outputting data to the console, don't kill any other orca
# process. We do this by looking for flags that *should* result
# in a cleanup (i.e., every legal command except -?, --help, -v,
# --version, -l, and --list-apps). This way, if the user
# erroneously types an illegal command line argument, the help
# text is emitted and the other orca is not killed.
#
if [ "x$ARGS" = "x" ] ; then
CLEANUP=1
else
CLEANUP=`echo "$ARGS" | egrep -c "\-s|\-t|\-n|\-u|\-e|\-d"`
fi
# Clean up before running orca to get anything that might
# be laying around.
#
if [ $CLEANUP -gt 0 ] ; then
cleanup
fi
runOrca
# Clean up after running orca in case things were not
# shutdown cleanly (e.g., speech).
#
if [ $CLEANUP -gt 0 ] ; then
cleanup
fi
fi