#!/usr/bin/perl -w
use strict;
use Debian::DictionariesCommon q(:all);
use Debconf::Client::ConfModule q(:all);
dico_checkroot ();
my $triggered;
my $skip_symlinks_setting;
my $class = "wordlist";
my $program = "update-default-$class";
my $debug = 1 if defined $ENV{'DICT_COMMON_DEBUG'};
# Parse options
foreach my $option ( @ARGV ){
if ( $option eq "--skip-symlinks" ){
# Do not try to set symlinks at $linkdir.
$skip_symlinks_setting++;
} elsif ( $option eq "--rebuild" ){
# info is always rebuilt, so this option is not needed.
# It is preserved as a no-op for old maintainer scripts.
} elsif ( $option eq "--triggered" ){
# Do not try to enable update-default-$class} trigger but run the script.
$triggered++;
} else {
die "update-default-$class: Bad option \"$option\". Aborting..."
}
}
version ('2.0');
updatedb ($class);
my $dictionaries = loaddb ($class);
# Preprocess default symlinks
dico_preprocess_default_symlinks ($class,$dictionaries);
# Enable trigger if needed. Exit cleanly on success.
unless ( $triggered ){
exit if dico_activate_trigger("update-default-$class");
}
my $manual;
my $question = "dictionaries-common/default-$class";
my $iquestion = "dictionaries-common/invalid_debconf_value";
my $debconf_dbase_corruption_question = "dictionaries-common/debconf_database_corruption";
my $newflag = "/var/cache/dictionaries-common/flag-$class-new";
# This flag is intended for remove-default-$class. If we are here we do not
# need it any longer, so we reset for future apt runs by cleaning it.
if ( -f $newflag ){
print STDERR "$program: Removing $newflag\n" if $debug;
unlink $newflag
or print STDERR " $program: Warning: could not remove $newflag\n";
}
my ($ret, $value) = get ($question);
if ( $ret == 0 && $value ){
# Question has a value
if ( $value =~ m/^Manual.*/i ){
# Question is set to manual mode
print STDERR "$program: Manual mode for \"$class\"\n" if $debug;
$manual++;
} elsif ( not %$dictionaries ) {
# Question has a value, but no manual mode and no class elements available. Unset value.
print STDERR "$program: No Manual mode and no $class elements. $question unset.\n" if $debug;
$value = "";
set($question,$value);
$manual++;
} else {
# Normal case, question has a value and is set to one of the installed class elements.
print STDERR "$program: Default is set to \"$value\" for \"$class\"\n" if $debug;
}
} elsif ( not %$dictionaries ) {
# Question is empty. No default nor class elements available. Proceed as for manual.
print STDERR "$program: No \"$class\" elements left.\n" if $debug;
$manual++;
} else { # Question is empty, but $class elements are installed.
# This seems to be debconf database corruption. Warn loudly about it.
my %class_pkgs = ();
foreach my $lang ( keys %{$dictionaries} ){
if ( defined $dictionaries->{$lang}->{'package'} ){
$class_pkgs{$dictionaries->{$lang}->{'package'}}++;
}
}
my $class_packages = join (', ',sort keys %class_pkgs);
subst($debconf_dbase_corruption_question,"class_packages",$class_packages);
subst($debconf_dbase_corruption_question,"question",$question);
fset ($debconf_dbase_corruption_question,"seen","false");
input("high",$debconf_dbase_corruption_question);
title ("dictionaries-common: wordlists");
go ();
# Try harder to get a value after default file
my $dico_sysdefault = dico_getsysdefault($class);
if ( defined $dico_sysdefault ){ # Not undef. Can be an empty or non-empty string.
if ( $dico_sysdefault ){ # True: Non-empty string and not 0
if ( defined $dictionaries->{$dico_sysdefault} ){
$value = $dico_sysdefault;
set($question,$value);
print STDERR "$program: Missing value for \"$question\" question. Using \"$value\"\n";
}
} else { # False: The empty string or 0
$value = "Manual symlinks setting (Forced after default file)";
set($question,$value);
$manual++;
}
}
}
unless ( $manual ){
# Handle invalid debconf values
if ( not exists $dictionaries->{$value} ){
# This can happen because either an invalid debconf value or a
# void value due to debconf database corruption. Try after stored
# values to stay in the safe side.
my @available_keys = sort {lc $a cmp lc $b} keys %$dictionaries;
my $choices = join (', ', sort {lc $a cmp lc $b} @available_keys);
print STDERR "$program: Trying to get a default value from \"$choices\"\n";
my $forced_key = $available_keys[0] ||
die "$program: Selected wordlist" .
" \"$value\" \n" .
"does not correspond to any installed package in the system\n" .
"and no alternative wordlist could be selected.\n";
# Warn about what might have happened if not debconf database corruption
if ( $value ){
subst($iquestion,"value",$value);
fset ($iquestion,"seen","false");
input("high",$iquestion);
}
# Prepare a selection box to get a default.
subst ($question, "choices", $choices); # Put sane values in debconf choices field
subst ($question, "echoices", $choices); # Put sane values in debconf echoices field
set ($question, $forced_key); # Set debconf value to a sane one
fset ($question,"seen","false");
input ("critical", $question);
title ("dictionaries-common: wordlists");
go ();
($ret, $value) = get ($question);
die "\n Could not get a valid value for debconf question:\n" .
"$question\n"
if ( $ret != 0 ); # This should never be reached
# Set manual flag if needed to avoid later symlinking
$manual++ if ( $value =~ m/^Manual.*/i );
}
}
# Set default value for ispell dictionaries and wordlists
if ( $manual ){
dico_setsysdefault ($class,"");
} else {
dico_setsysdefault ($class,$value);
}
#
# Set default symlink(s) and complain if not possible.
# For ispell dictionaries using auto-buildhash this should not be done
# from dictionaries-common postinst, but from ispell dictionaries postinst.
# Otherwise this is called before hashes are autobuild and will fail.
# d-c.postinst will call update-default-ispell with --skip-symlinks option.
unless ( $skip_symlinks_setting or $manual ) {
dico_set_default_symlink($class,$value);
}
# Local Variables:
# perl-indent-level: 2
# End:
__END__
=head1 NAME
update-default-wordlist - update default wordlist
=head1 SYNOPSIS
update-default-wordlist [--skip-symlinks] [--triggered]
=head1 DESCRIPTION
WARNING: Not to be used from the command line unless you know very well what you are doing.
This program is intended to be called from wordlist package postinst,
from B<select-default-wordlist> or
from dictionaries-common postinst.
When called under dpkg control with the B<--trigger> option the
script is run normally, otherwise the dictionaries-common
B<update-default-wordlist> trigger is enabled
for later run.
With the B<--skip-symlinks> option the symlinks setting is skipped.
When run normally (from the command line or with B<--trigger>)
this script rebuilds the info at
F</var/cache/dictionaries-common/wordlist.db>
after files under F</var/lib/dictionaries-common/wordlist>,
reads the system default from the debconf database and
unless disabled, set default symlinks in F</etc/dictionaries-common>
pointing to the appropriate files in
F</usr/share/dict/>.
=head1 OPTIONS
--skip-symlinks Do not try to set symlinks at /etc/dictionaries-common dir.
--triggered Run all the code instead of trying to enable
update-default-wordlist trigger
=head1 SEE ALSO
The dictionaries-common policy document
=head1 AUTHORS
Rafael Laboissiere,
Agustin Martin Domingo
=cut
Mini Shell