Package: im-switch
Version: 1.14
Severity: normal
VINE's setime (/usr/share/vine/imelib) is interesting which may give
idea for avoiding duplicated start of IME by im-switch initiated
scripts.
For example for set up IME with SCIM, first next function is run
setSCIM() {
XMODIFIERS="@im=SCIM"
GTK_IM_MODULE=scim
QT_IM_MODULE=scim
rpm -q --quiet scim-qtimm || QT_IM_MODULE=xim
export XMODIFIERS GTK_IM_MODULE QT_IM_MODULE
startScim
checkKinput2Mod && kinput2ctl stop
return 0
}
In here,
startScim(){
if [ -z "`pidofmyproc scim-launcher`" ] ; then
scim -d >& /dev/null
fi
TK_KCPROTO=xim
}
Here pidofmyproc checks existing of scim-launcher and if it s not there,
it runs SCIM in daemon mode.
pidofmyproc is defined in /usr/share/vine/functions (a variant of
/etc/init.d/functions). Here are the relevant portions:
pidofproc() {
# Test syntax.
if [ $# = 0 ] ; then
echo "Usage: pidofproc {program}"
return 1
fi
# First try "/var/run/*.pid" files
if [ -f /var/run/$1.pid ] ; then
pid=`head -1 /var/run/$1.pid`
if [ "$pid" != "" ] ; then
echo $pid
return 0
fi
fi
# Next try "pidof"
pid=`/sbin/pidof $1`
if [ "$pid" != "" ] ; then
echo $pid
return 0
fi
# Finally try to extract it from ps
ps auxw | awk 'BEGIN { prog=ARGV[1]; ARGC=1 }
{ if ((prog == $11) || (("(" prog ")") == $11) ||
((prog ":") == $11)) { print $2 ; exit 0 } }' $1
}
pidofmyproc() {
# Test syntax.
if [ $# = 0 ] ; then
echo "Usage: ownofproc {program}"
return 1
fi
# Next try "pidof"
pid=`pidofproc $1`
if [ "$pid" != "" ] ; then
for i in $pid; do
user=`ps h -o user --pid $i`
if [ "${user}" = "${USER}" ]; then
echo -n $i" "
fi
done
echo
return 0
fi
}
I do not see the license for these script in the header but Miquel van
Smoorenburg is listed as the part of upstream. In Debian there is pidof
command by him. This is binary used above too.
Then I find the /lib/lsb/init-functions which has a bit diferent but
similar looking: pidofproc.
pidofproc () {
local pidfile line i pids= status specified pid
pidfile=
specified=
OPTIND=1
while getopts p: opt ; do
case "$opt" in
p) pidfile="$OPTARG"; specified=1;;
esac
done
shift $(($OPTIND - 1))
if [ -z "${pidfile:-}" ]; then
pidfile=/var/run/${1##*/}.pid
fi
if [ -f "$pidfile" ]; then
read pid < "$pidfile"
if [ -n "${pid:-}" ]; then
if $(kill -0 "${pid:-}" 2> /dev/null); then
echo "$pid"
return 0
else
return 1 # program is dead and /var/run pid file exists
fi
fi
fi
if [ -x /bin/pidof -a ! "$specified" ]; then
/bin/pidof -o %PPID $1
status="$?"
[ "$status" = 1 ] && return 3 # program is not running
return 0
fi
return 4 # program or service is unknown
}
I was wondering -o here and
-o omitpid
Tells pidof to omit processes with that process id. The special
pid %PPID can be used to name the parent process of the pidof
program, in other words the calling shell or shell script.
Since SCIM do not use PID file thing, simple pidof maybe more than enough.
In this case, using safer long option and
local l_pid l_user
pid=$(/bin/pidof $1)
if [ -n "$l_pid" ] ; then
for i in $l_pid; do
l_user=$(ps --no-headers -o user --pid $i)
if [ "${l_user}" = "${USER}" ]; then
echo -n $i" "
fi
done
echo
return 0
fi
Since we only use this to check existing process owned by the user, this
may be even more simplified. Oh well, ... later
im-switch handles only 3 IME controling parameters.
XMODIFIERS
XIM
GTK_IM_MODULE
QT_IM_MODULE
It may be a good idea to add few more variables like VINE has in its
imeset script:
TK_KCPROTO=htt
EMACS_IME
...
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.22-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
im-switch depends on no packages.
Versions of packages im-switch recommends:
ii x11-common 1:7.2-5 X Window System (X.Org) infrastruc
-- no debconf information
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