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|
#! /bin/sh
# prerm script for multispeech
#
# see: dh_installdeb(1)
set -e
# summary of how this script can be called:
# * <prerm> `remove'
# * <old-prerm> `upgrade' <new-version>
# * <new-prerm> `failed-upgrade' <old-version>
# * <conflictor's-prerm> `remove' `in-favour' <package> <new-version>
# * <deconfigured's-prerm> `deconfigure' `in-favour'
# <package-being-installed> <version> `removing'
# <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package
case "$1" in
upgrade)
exit 0
;;
remove|deconfigure)
;;
failed-upgrade)
;;
*)
echo "prerm called with unknown argument \`$1'" >&2
exit 1
;;
esac
#echo " deconfiguring" >>/var/log/emacspeak
if [ -e /usr/share/debconf/confmodule ]; then # {{{
. /usr/share/debconf/confmodule
if db_get shared/emacspeak/fake; then
# I no longer claim these questions.
db_unregister shared/emacspeak/fake
db_unregister shared/emacspeak/device
db_unregister shared/emacspeak/port
db_unregister shared/emacspeak/invalidport
db_unregister shared/emacspeak/groupies
db_unregister shared/emacspeak/invaliduser
db_unregister shared/emacspeak/rootgroup
db_unregister shared/emacspeak/program
db_unregister shared/emacspeak/tcl
db_unregister shared/emacspeak/database
fi
# See if the shared question still exists.
if db_get shared/emacspeak/fake; then
db_metaget shared/emacspeak/fake owners
db_subst shared/emacspeak/fake choices $RET
export task=$1 # save argument
perl -x $0 # execute this file as a perl program
true <<EOF # bash discards everything from here to EOF
# perl ignores everything until the next line, due to the "-x" option above
#!/usr/bin/perl -w $*
use strict;
use Debconf::Client::ConfModule q(:all);
# get choices already in the debconf database
my $deleted_device='Multispeech';
my ($b, $p, $t, $device, $olddevice,
%blurb, %program, %tcl, %device, %db);
my ($ret, $database) = metaget ('shared/emacspeak/database', 'choices');
foreach (split (/, */, $database)){ # debconf database is comma separated
($b, $p, $t, $device)=split(/:/);
if ($deleted_device ne $device){
$blurb{$device}=$b;
$program{$device}=$p;
$tcl{$device}=$t;
$db{$device}="$b:$p:$t";
}
}
# Add choices from unpacked .blurb files from other packages, in case
# they aren't debconf compliant
my $dirname='/usr/share/emacs/site-lisp/emacspeak/blurbs';
if (opendir(DIR,$dirname)){
my @fnames=readdir(DIR);
closedir(DIR);
foreach (@fnames){
if (/.blurb$/){
open(IF,"$dirname/$_");
while(<IF>){
if (/^blurb: *(.*)$/) {$b=$1;}
if (/^program: *(.*)$/) {$p=$1;}
if (/^tcl: *(.*)$/) {$t=$1;}
if (/^device: *(.*)$/) {$device=$1;}
}
if ($deleted_device ne $device){
$blurb{$device}=$b;
$program{$device}=$p;
$tcl{$device}=$t;
$db{$device}="$b:$p:$t";
}
}
}
}
my $newdatabase='';
foreach $device (sort keys %db) {
($b,$p,$t)=split(':',$db{$device});
$newdatabase .= "$b:$p:$t:$device, ";
}
# update debconf database
subst ('shared/emacspeak/database', 'choices', $newdatabase);
my $devicelist=join(', ', sort keys %db);
subst ('shared/emacspeak/device', 'choices', $devicelist);
# get current settings from the configuration file if it exists
my $configfile='/etc/emacspeak.conf';
my $program='';
my $port='';
my $tcl='';
if (-e $configfile){
open(CF,$configfile)
or die("$configfile exists but could not be opened for reading\n");
while (<CF>){
/^\s*DTK_PROGRAM\s*=\s*(\S+)/ and
set('shared/emacspeak/program',$1);
/^\s*DTK_PORT\s*=\s*(\S+)/ and
set('shared/emacspeak/port',$1);
/^\s*DTK_TCL\s*=\s*(\S+)/ and
set('shared/emacspeak/tcl',$1);
/^\s*DTK_DEVICE\s*=\s*(\S+)/ and
set('shared/emacspeak/device',$1);
# If device is a quoted string, rescan to get the whole thing
/^\s*DTK_DEVICE\s*=\s*\"(.+)\"/ and
set('shared/emacspeak/device',$1);
/^\s*DTK_DEVICE\s*=\s*\'(.+)\'/ and
set('shared/emacspeak/device',$1);
}
close(CF);
}
if ($ENV{task} eq "remove" && $deleted_device eq $device){
# the currently configured device is being removed,
# so ask which remaining device to use
fset('shared/emacspeak/device', 'seen', 'false');
title('emacspeak speech server configuration');
input('high', 'shared/emacspeak/device'); go();
$device=get('shared/emacspeak/device');
if (get('shared/emacspeak/program') eq ''){
set('shared/emacspeak/program',$program{$device});
}
if (get('shared/emacspeak/tcl') eq ''){
set('shared/emacspeak/tcl',$tcl{$device});
}
if ($device eq "DoubleTalk PC" and $port =~ m./dev/tty.){
set('shared/emacspeak/port','/dev/dtlk');
}
set('shared/emacspeak/program',$program{$device});
fset('shared/emacspeak/port', 'seen', 'false');
set('shared/emacspeak/tcl',$tcl{$device});
my $valid=0;
while (!$valid) {
input('high', 'shared/emacspeak/port'); go();
$port=get('shared/emacspeak/port');
if (($port eq "none") || (-c $port)){
$valid=1;
} else {
subst("shared/emacspeak/invalidport",'port',$port);
input('high','shared/emacspeak/invalidport'); go();
}
}
# we don't check port permissions or ownership, or add or delete
# users from the port's group
} # if ($deleted_device eq $device)
__END__ # perl ignores everything after this
EOF
# Actualize chosen speech server in config file
CONFIGFILE=/etc/emacspeak.conf
if [ -e $CONFIGFILE ]; then
# Substitute in the values from the debconf db.
db_get shared/emacspeak/program
DTK_PROGRAM="$RET"
db_get shared/emacspeak/tcl
DTK_TCL="$RET"
db_get shared/emacspeak/port
DTK_PORT="$RET"
db_get shared/emacspeak/device
DTK_DEVICE="$RET"
# This cp ensures we do not mess up
# the config file's ownership and permissions.
cp -a -f $CONFIGFILE $CONFIGFILE.tmp
# If the admin deleted or commented some variables but then set
# them via debconf, (re-)add them to the conffile.
test -z "$DTK_PROGRAM" || grep -Eq '^ *DTK_PROGRAM=' $CONFIGFILE || \
echo "DTK_PROGRAM=" >> $CONFIGFILE
test -z "$DTK_TCL" || grep -Eq '^ *DTK_TCL=' $CONFIGFILE || \
echo "DTK_TCL=" >> $CONFIGFILE
test -z "$DTK_PORT" || grep -Eq '^ *DTK_PORT=' $CONFIGFILE || \
echo "DTK_PORT=" >> $CONFIGFILE
test -z "$DTK_DEVICE" || grep -Eq '^ *DTK_DEVICE=' $CONFIGFILE || \
echo "DTK_DEVICE=" >> $CONFIGFILE
# the strings can contain slashes, so use something else to delimit patterns
sed -e "s|^ *DTK_PROGRAM=.*|DTK_PROGRAM=$DTK_PROGRAM|" \
-e "s|^ *DTK_TCL=.*|DTK_TCL=$DTK_TCL|" \
-e "s|^ *DTK_PORT=.*|DTK_PORT=$DTK_PORT|" \
-e "s/^ *DTK_DEVICE=.*/DTK_DEVICE=\"$DTK_DEVICE\"/" \
< $CONFIGFILE > $CONFIGFILE.tmp
mv -f $CONFIGFILE.tmp $CONFIGFILE
fi
fi # shared question still exists
fi # debconf is installed
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
#DEBHELPER#
exit 0
|
