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#!/usr/bin/perl -w
# Create dictionaries and affix rules palatable for PostgreSQL, using installed
# myspell and hunspell dictionaries.
#
# (C) 2008-2009 Martin Pitt <mpitt@debian.org>
# (C) 2012-2017 Christoph Berg <myon@debian.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
my @srcdirs = ('/usr/share/hunspell', '/usr/share/myspell/dicts');
my $cachedir = '/var/cache/postgresql/dicts';
my $pgsharedir = '/usr/share/postgresql/';
use PgCommon;
# determine encoding of an .aff file
sub get_encoding {
open F, $_[0] or die "cannot open $_[0]: $!";
while (<F>) {
if (/^SET ([\w-]+)\s*$/) { return $1; }
}
return undef;
}
umask 022;
if ((system 'mkdir', '-p', $cachedir) != 0) {
exit 1;
}
# keep track of all up to date files, so that we can clean up cruft
my %current;
print "Building PostgreSQL dictionaries from installed myspell/hunspell packages...\n";
my ($dic, $enc, $locale);
for my $d (@srcdirs) {
for my $aff (glob "$d/*.aff") {
next if -l $aff; # ignore symlinks
$dic = substr($aff, 0, -3) . 'dic';
if (! -f $dic) {
print STDERR "ERROR: $aff does not have corresponding $dic, ignoring\n";
next;
}
$enc = get_encoding $aff;
if (!$enc) {
print STDERR "ERROR: no ecoding defined in $aff, ignoring\n";
next;
}
$locale = substr ((split '/', $aff)[-1], 0, -4);
$locale =~ tr /A-Z/a-z/;
$current{"$cachedir/$locale.affix"} = undef;
$current{"$cachedir/$locale.dict"} = undef;
# convert to UTF-8 and write to cache dir
print " $locale\n";
if ((system 'iconv', '-f', $enc, '-t', 'UTF-8', '-o',
"$cachedir/$locale.affix", $aff) != 0) {
unlink "$cachedir/$locale.affix";
print STDERR "ERROR: Conversion of $aff failed\n";
next;
}
if ((system 'iconv', '-f', $enc, '-t', 'UTF-8', '-o',
"$cachedir/$locale.dict", $dic) != 0) {
unlink "$cachedir/$locale.affix";
unlink "$cachedir/$locale.dict";
print STDERR "ERROR: Conversion of $dic failed\n";
next;
}
# install symlinks to all versions >= 8.3
foreach my $v (get_versions) {
next if $v < '8.3';
my $dest = "$pgsharedir/$v/tsearch_data";
next if ! -d $dest;
$current{"$dest/$locale.affix"} = undef;
$current{"$dest/$locale.dict"} = undef;
next if -e "$dest/$locale.affix" && ! -l "$dest/$locale.affix";
next if -e "$dest/$locale.dict" && ! -l "$dest/$locale.dict";
unlink "$dest/$locale.affix";
unlink "$dest/$locale.dict";
symlink "$cachedir/$locale.affix", "$dest/$locale.affix";
symlink "$cachedir/$locale.dict", "$dest/$locale.dict";
}
}
}
# clean up files for locales which do not exist any more
print "Removing obsolete dictionary files:\n";
foreach my $f (glob "$cachedir/*") {
next if exists $current{$f};
print " $f\n";
unlink $f;
}
foreach my $f ((glob "$pgsharedir/*/tsearch_data/*.affix"),
(glob "$pgsharedir/*/tsearch_data/*.dict")) {
next unless -l $f;
next if exists $current{$f};
print " $f\n";
unlink $f;
}
__END__
=head1 NAME
pg_updatedicts - build PostgreSQL dictionaries from myspell/hunspell ones
=head1 SYNOPSIS
B<pg_updatedicts>
=head1 DESCRIPTION
B<pg_updatedicts> makes dictionaries and affix files from installed myspell
and hunspell dictionary packages available to PostgreSQL for usage with tsearch
and word stem support. In particular, it takes all I<*.dic> and I<*.aff> files
from /usr/share/myspell/dicts/, converts them to UTF-8, puts them into
/var/cache/postgresql/dicts/ with I<*.dict> and I<*.affix> suffixes, and
symlinks them into /usr/share/postgresql/I<version>/tsearch_data/, where
PostgreSQL looks for them.
Through postgresql-common's dpkg trigger, this program is automatically run
whenever a myspell or hunspell dictionary package is installed or upgraded.
=head1 AUTHOR
Martin Pitt L<E<lt>mpitt@debian.orgE<gt>>
|
