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#!/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