313 lines
12 KiB
Perl
313 lines
12 KiB
Perl
# ---------------------------------------------------------------------------
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# dc-debconf-select.pl:
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# This file will be added to end of dictionaries-common.config-base
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# to make dictionaries-common.config, as well as installed under
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# /usr/share/dictionaries-common for single ispell dicts/wordlists use
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# ---------------------------------------------------------------------------
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use strict;
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sub dico_get_packages (){
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# Get list of packages sharing the question
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my $class = shift;
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my $question = "shared/packages-$class";
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my @pkglist = ();
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my ($errorcode,$packages) = metaget ($question, "owners");
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@pkglist = split (/\s*,\s*/, $packages) unless $errorcode;
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return \@pkglist;
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}
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sub dico_parse_languages (){
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# Get a hash reference of package -> list of (e)languages provided by package
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my $class = shift;
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my $variant = shift;
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my $packages = shift;
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my %tmphash = ();
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die "No variant (languages|elanguages) string supplied\n" unless $variant;
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$packages = &dico_get_packages($class) unless $packages;
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foreach my $pkg ( @$packages ){
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my ($errorcode, $entry ) = metaget("$pkg/$variant", "default");
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unless ( $errorcode ){
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$entry =~ s/^\s+//;
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$entry =~ s/\s+$//;
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$tmphash{$pkg} = $entry;
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}
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}
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return \%tmphash;
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}
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sub dico_get_all_choices (){
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# Get $choices and $echoices parallel lists sorted after $echoices and formatted for debconf
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my $class = shift;
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my $languages = shift;
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my $debug = 1 if exists $ENV{'DICT_COMMON_DEBUG'};
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my %mappinghash = ();
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my $debug_prefix = "[$class,dico_get_all_choices]";
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$languages = &dico_parse_languages($class,"languages") unless $languages;
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my $elanguages = &dico_parse_languages($class,"elanguages",[ keys %$languages ]);
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if ( $debug ){
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print STDERR "-------- $debug_prefix start --------\n";
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my $langlist = join(', ',sort keys %{$languages});
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my $elanglist = join(', ',sort keys %{$elanguages});
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print STDERR " * Packages with languages: $langlist\n" if $debug;
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print STDERR " * Packages with elanguages: $elanglist\n" if $debug;
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}
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foreach my $pkg ( keys %$languages ){
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my @langs = split(/\s*,\s*/, $languages->{$pkg});
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my @elangs = @langs;
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if ( exists $elanguages->{$pkg} ){
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my @tmp = split(/\s*,\s*/, $elanguages->{$pkg});
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if ( $debug ){
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print STDERR " langs: $#langs, " . join(', ',@langs) . "\n";
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print STDERR " tmp: $#tmp, " . join(', ',@tmp) . "\n";
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}
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@elangs = @tmp if ( $#langs == $#tmp );
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}
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foreach my $index ( 0 .. $#langs ){
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$mappinghash{$langs[$index]} = $elangs[$index];
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}
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}
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my $echoices = join(', ', sort {lc($a) cmp lc($b)} values %mappinghash);
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my $choices = join(', ',
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sort {lc($mappinghash{$a}) cmp lc($mappinghash{$b})}
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keys %mappinghash);
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if ( $debug ){
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print STDERR " * Choices:\n [$choices]\n";
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print STDERR " * Echoices:\n [$echoices]\n";
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print STDERR "-------- $debug_prefix end --------\n";
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}
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return $choices, $echoices;
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}
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# ---------------------------------------------------------------------------
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sub dico_get_default_value (){
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# ---------------------------------------------------------------------------
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# debconf-is-not-a-registry:
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# ---------------------------------------------------------------------------
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my $class = shift;
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my $newchoices = shift;
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my $question = "dictionaries-common/default-$class";
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my $cachedir = "/var/cache/dictionaries-common";
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my $sys_default_dir = "$cachedir";
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my $debug = 1 if defined $ENV{'DICT_COMMON_DEBUG'};
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my $debug_prefix = "[$class,dico_get_default_value]";
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my %sys_default_files = ( 'ispell' => "$sys_default_dir/ispell-default",
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'wordlist' => "$sys_default_dir/wordlist-default");
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my $sys_default_value;
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my $sys_default_file = $sys_default_files{$class};
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# Get current value in system default file if available
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if ( -f $sys_default_file ){
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open ( my $SYS_DEFAULT_FILE, "<$sys_default_file" );
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while (<$SYS_DEFAULT_FILE>){
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next if m/^\s*\#/;
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next if m/^\s*$/;
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chomp;
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s/^\s+//;
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s/\s+$//;
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$sys_default_value = $_;
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last;
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}
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close $SYS_DEFAULT_FILE;
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}
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my $debconf_default_value = get ($question);
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# If valid and different from debconf value, use it as new value
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if ( $sys_default_value && $sys_default_value ne $debconf_default_value ) {
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if ( defined $newchoices->{$sys_default_value} ){
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set($question,$sys_default_value);
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my $debconf_default_value_txt = $debconf_default_value ? $debconf_default_value : "";
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print STDERR
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"$debug_prefix: dictionaries-common warning:\n" .
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" debconf question \"$question\" value did not match that in \"$sys_default_file\"\n" .
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" Changing debconf value \"$debconf_default_value_txt\" to \"$sys_default_value\"\n";
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return $sys_default_value;
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} elsif ( $debconf_default_value ) {
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if ( $debug ){
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print STDERR
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"$debug_prefix: dictionaries-common warning:\n" .
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" \"$sys_default_value\" in \"$sys_default_file\" seems not available.\n" .
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" Will set to debconf value \"$debconf_default_value\" in trigger. Be patient.\n";
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} elsif ( defined $ENV{DPKG_MAINTSCRIPT_NAME}
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&& $ENV{DPKG_MAINTSCRIPT_NAME} eq "config") {
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print STDERR
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" \"$sys_default_value\" in \"$sys_default_file\" seems not available.\n" .
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" Will set to debconf value \"$debconf_default_value\" in trigger. Be patient.\n";
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}
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return $debconf_default_value;
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}
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} else {
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return $debconf_default_value;
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}
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}
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sub dc_debconf_select (){
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my $classinfo = shift;
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my $debug = 1 if exists $ENV{'DICT_COMMON_DEBUG'};
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my $reconfigure = 1 if exists $ENV{'DEBCONF_RECONFIGURE'};
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my $echoices;
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my %title = ('ispell' => "Dictionaries-common: Ispell dictionary",
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'wordlist' => "Dictionaries-common: Wordlist dictionary"
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);
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my $class;
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my $priority;
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my $is_dcconfig;
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# If $classinfo is a hash reference, function is called from dictionaries-common.config
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if ( ref($classinfo) eq 'HASH' ){
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$class = $classinfo->{'class'};
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$priority = $classinfo->{'priority'} if ( defined $classinfo->{'priority'} );
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$is_dcconfig = 1;
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} else {
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# Otherwise is called from ispell dictionary/wordlist config
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$class = $classinfo;
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}
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my $packages = &dico_get_packages($class);
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return unless $packages;
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my $question = "dictionaries-common/default-$class";
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my $flagdir = "/var/cache/dictionaries-common";
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my $newflag = "$flagdir/flag-$class-new";
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my $debug_prefix = "[$class,dc_debconf_select]";
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my $langscript = "/usr/share/dictionaries-common/dc-debconf-default-value.pl";
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print STDERR "----- $debug_prefix start -----------\n" if $debug;
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# Get new base list of provided languages
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my %newchoices = ();
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my $languages = &dico_parse_languages($class,"languages",$packages);
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foreach my $pkg ( keys %$languages ) {
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foreach my $lang ( split(/\s*,\s*/, $languages->{$pkg}) ){
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$newchoices{$lang}++;
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}
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}
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my $choices = join (', ', sort {lc($a) cmp lc($b)} keys %newchoices);
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# Get old list of provided languages
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my @oldchoices = split(/\s*,\s*/,metaget ($question, "choices-c"));
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pop @oldchoices; # Remove the manual entry
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my $oldchoices = join (', ', sort {lc($a) cmp lc($b)} @oldchoices);
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# If dictionaries-common is already installed (-r $langscript),
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# there are elements for this class to be installed (%newchoices)
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# and there were none before (! $oldchoices), means that we are installing
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# for the first time elements in this class, with dictionaries-common
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# already installed. Try getting a reasonable default value
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if ( -r $langscript && %newchoices && ! $oldchoices ){
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print STDERR "$debug_prefix: Configuring class \"$class\" for the first time\n\n" if $debug;
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# If called from dictionaries-common.config we already have
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# $langscript, and probably more recent. Including it here will cause
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# some warnings about subroutine re-definitions and even errors.
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require $langscript unless $is_dcconfig;
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my $guessed = &dc_set_default_value_for_class($class);
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$priority = $guessed->{'priority'} if ( defined $guessed->{'priority'} );
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}
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# Get default ispell dictionary / wordlist.
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my $curval = &dico_get_default_value($class,\%newchoices);
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# Will be given a value if current value is wrong, undef otherwise
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my $wrong_curval;
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# Try harder to have a good default if current value is empty, but %newchoices not.
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unless ( $curval ){
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if ( -r $langscript && %newchoices ){
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print STDERR "$debug_prefix: Possible values, but unset \"$question\". Trying harder to get a default value.\n";
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# As above, if called from dictionaries-common.config we already have
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# $langscript, and probably more recent. Including it here will cause
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# some warnings about subroutine re-definitions and even errors.
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require $langscript unless $is_dcconfig;
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my $guessed = &dc_set_default_value_for_class($class);
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$priority = $guessed->{'priority'} if ( defined $guessed->{'priority'} );
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$curval = get ($question);
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print STDERR "$debug_prefix: \"$question\" set to \"$curval\". Can be changed with select-default-$class.\n";
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}
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}
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if ( scalar %newchoices ) {
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# If $priority is set &dc_set_default_value_for_class found something.
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# This will usually be as much "medium", so honour it.
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unless ( $priority ){
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if ( $curval && ( $curval =~ /^Manual.*/ or defined $newchoices{$curval} ) ){
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# Use priority "medium" if current value is in the new list or mode is set to manual.
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$priority = "medium";
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} else {
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# Otherwise we either have a wrong value with no associated entry
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# or a void value with elements installed (and thus possible values).
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# This is an *error* that needs to be signalled and acted upon.
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# For this reason priority must be higher than the standard one.
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# We leave it as "high" instead of "critical" so question can be
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# overriden in special cases until underlying bug is fixed.
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$priority = "high";
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if ( $curval ){
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$wrong_curval = $curval;
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print STDERR "$debug_prefix error: \"$curval\" does not correspond to any package.\n";
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} else {
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$wrong_curval = "Question unset";
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print STDERR "$debug_prefix error: \"$question\" unset but $class elements installed.\n";
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}
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}
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}
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} else {
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$priority = "low";
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print STDERR "$debug_prefix info: No elements in given class.\n" if $debug;
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}
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if ( $debug or $wrong_curval ){
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my $curval_txt = $wrong_curval || $curval;
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print STDERR "$debug_prefix:
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* Class: $class, Priority: $priority
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* Question: \"$question\", Previous or guessed value: \"$curval_txt\"
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* New choices: [$choices]
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* Old choices: [$oldchoices]\n";
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}
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# May ask question if there is no match
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if ( scalar %newchoices ) {
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if ( $choices ne $oldchoices) {
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fset ($question, "seen", "false");
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# Let future processes in this apt run know that a new $class element is to be installed
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if ( -d $flagdir ) {
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open (my $FLAG, "> $newflag")
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or die "Could not open $newflag for write. Aborting ...\n";
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print $FLAG "1\n";
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close $FLAG;
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}
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}
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my ( $errorcode, $seen ) = fget($question, "seen");
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if ( $seen eq "false" or $reconfigure ){
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($choices, $echoices ) = &dico_get_all_choices($class,$languages);
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subst ($question, "choices", $choices);
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subst ($question, "echoices", $echoices);
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}
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input ($priority, $question);
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title ($title{$class});
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go ();
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subst ($question, "echoices", $choices); # Be backwards consistent
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}
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# If called from dictionaries-common.config, check actual values in debug mode
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if ( $debug && $is_dcconfig ){
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print STDERR " * Checking really set values for $question:\n";
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print STDERR " - Choices-C string: " . metaget ($question, "choices-c") . "\n";
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print STDERR " - Really set value: " . get ($question) . "\n";
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}
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print STDERR "----- $debug_prefix end -----------\n" if $debug;
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}
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# Local Variables:
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# perl-indent-level: 2
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# End:
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1;
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