misc/translator/LangInstaller.pm

   1 package LangInstaller;
   2
   3 # Copyright (C) 2010 Tamil s.a.r.l.
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use Modern::Perl;
  21
  22 use C4::Context;
  23 # WARNING: Any other tested YAML library fails to work properly in this
  24 # script content
  25 use YAML::Syck qw( Dump LoadFile );
  26 use Locale::PO;
  27 use FindBin qw( $Bin );
  28
  29 $YAML::Syck::ImplicitTyping = 1;
  30
  31
  32 # Default file header for .po syspref files
  33 my $default_pref_po_header = Locale::PO->new(-msgid => '', -msgstr =>
  34     "Project-Id-Version: PACKAGE VERSION\\n" .
  35     "PO-Revision-Date: YEAR-MO-DA HO:MI +ZONE\\n" .
  36     "Last-Translator: FULL NAME <EMAIL\@ADDRESS>\\n" .
  37     "Language-Team: Koha Translate List <koha-translate\@lists.koha-community.org>\\n" .
  38     "MIME-Version: 1.0\\n" .
  39     "Content-Type: text/plain; charset=UTF-8\\n" .
  40     "Content-Transfer-Encoding: 8bit\\n" .
  41     "Plural-Forms: nplurals=2; plural=(n > 1);\\n"
  42 );
  43
  44
  45 sub set_lang {
  46     my ($self, $lang) = @_;
  47
  48     $self->{lang} = $lang;
  49     $self->{po_path_lang} = $self->{context}->config('intrahtdocs') .
  50                             "/prog/$lang/modules/admin/preferences";
  51 }
  52
  53
  54 sub new {
  55     my ($class, $lang, $pref_only, $verbose) = @_;
  56
  57     my $self                 = { };
  58
  59     my $context              = C4::Context->new();
  60     $self->{context}         = $context;
  61     $self->{path_pref_en}    = $context->config('intrahtdocs') .
  62                                '/prog/en/modules/admin/preferences';
  63     set_lang( $self, $lang ) if $lang;
  64     $self->{pref_only}       = $pref_only;
  65     $self->{verbose}         = $verbose;
  66     $self->{process}         = "$Bin/tmpl_process3.pl " . ($verbose ? '' : '-q');
  67     $self->{path_po}         = "$Bin/po";
  68     $self->{po}              = { '' => $default_pref_po_header };
  69     $self->{domain}          = 'messages';
  70     $self->{cp}              = `which cp`;
  71     $self->{msgmerge}        = `which msgmerge`;
  72     $self->{xgettext}        = `which xgettext`;
  73     $self->{sed}             = `which sed`;
  74     chomp $self->{cp};
  75     chomp $self->{msgmerge};
  76     chomp $self->{xgettext};
  77     chomp $self->{sed};
  78
  79     unless ($self->{xgettext}) {
  80         die "Missing 'xgettext' executable. Have you installed the gettext package?\n";
  81     }
  82
  83     # Get all .pref file names
  84     opendir my $fh, $self->{path_pref_en};
  85     my @pref_files = grep { /.pref/ } readdir($fh);
  86     close $fh;
  87     $self->{pref_files} = \@pref_files;
  88
  89     # Get all available language codes
  90     opendir $fh, $self->{path_po};
  91     my @langs =  map { ($_) =~ /(.*)-pref/ }
  92         grep { $_ =~ /.*-pref/ } readdir($fh);
  93     closedir $fh;
  94     $self->{langs} = \@langs;
  95
  96     # Map for both interfaces opac/intranet
  97     my $opachtdocs = $context->config('opachtdocs');
  98     $self->{interface} = [
  99         {
 100             name   => 'Intranet prog UI',
 101             dir    => $context->config('intrahtdocs') . '/prog',
 102             suffix => '-staff-prog.po',
 103         },
 104         {
 105             name   => 'Intranet prog help',
 106             dir    => $context->config('intrahtdocs') . '/prog/en/modules/help',
 107             suffix => '-staff-help.po',
 108         },
 109     ];
 110
 111     # OPAC themes
 112     opendir my $dh, $context->config('opachtdocs');
 113     for my $theme ( grep { not /^\.|lib/ } readdir($dh) ) {
 114         push @{$self->{interface}}, {
 115             name   => "OPAC $theme",
 116             dir    => "$opachtdocs/$theme",
 117             suffix => "-opac-$theme.po",
 118         };
 119     }
 120
 121     # MARC flavours (hardcoded list)
 122     for ( "MARC21", "UNIMARC", "NORMARC" ) {
 123         # search for strings on staff & opac marc files
 124         my $dirs = $context->config('intrahtdocs') . '/prog';
 125         opendir $fh, $context->config('opachtdocs');
 126         for ( grep { not /^\.|\.\.|lib$/ } readdir($fh) ) {
 127             $dirs .= ' ' . "$opachtdocs/$_";
 128         }
 129         push @{$self->{interface}}, {
 130             name   => "$_",
 131             dir    => $dirs,
 132             suffix => "-marc-$_.po",
 133         };
 134     }
 135
 136     bless $self, $class;
 137 }
 138
 139
 140 sub po_filename {
 141     my $self = shift;
 142
 143     my $context    = C4::Context->new;
 144     my $trans_path = $Bin . '/po';
 145     my $trans_file = "$trans_path/" . $self->{lang} . "-pref.po";
 146     return $trans_file;
 147 }
 148
 149
 150 sub po_append {
 151     my ($self, $id, $comment) = @_;
 152     my $po = $self->{po};
 153     my $p = $po->{$id};
 154     if ( $p ) {
 155         $p->comment( $p->comment . "\n" . $comment );
 156     }
 157     else {
 158         $po->{$id} = Locale::PO->new(
 159             -comment => $comment,
 160             -msgid   => $id,
 161             -msgstr  => ''
 162         );
 163     }
 164 }
 165
 166
 167 sub add_prefs {
 168     my ($self, $comment, $prefs) = @_;
 169
 170     for my $pref ( @$prefs ) {
 171         my $pref_name = '';
 172         for my $element ( @$pref ) {
 173             if ( ref( $element) eq 'HASH' ) {
 174                 $pref_name = $element->{pref};
 175                 last;
 176             }
 177         }
 178         for my $element ( @$pref ) {
 179             if ( ref( $element) eq 'HASH' ) {
 180                 while ( my ($key, $value) = each(%$element) ) {
 181                     next unless $key eq 'choices';
 182                     next unless ref($value) eq 'HASH';
 183                     for my $ckey ( keys %$value ) {
 184                         my $id = $self->{file} . "#$pref_name# " . $value->{$ckey};
 185                         $self->po_append( $id, $comment );
 186                     }
 187                 }
 188             }
 189             elsif ( $element ) {
 190                 $self->po_append( $self->{file} . "#$pref_name# $element", $comment );
 191             }
 192         }
 193     }
 194 }
 195
 196
 197 sub get_trans_text {
 198     my ($self, $id) = @_;
 199
 200     my $po = $self->{po}->{$id};
 201     return unless $po;
 202     return Locale::PO->dequote($po->msgstr);
 203 }
 204
 205
 206 sub update_tab_prefs {
 207     my ($self, $pref, $prefs) = @_;
 208
 209     for my $p ( @$prefs ) {
 210         my $pref_name = '';
 211         next unless $p;
 212         for my $element ( @$p ) {
 213             if ( ref( $element) eq 'HASH' ) {
 214                 $pref_name = $element->{pref};
 215                 last;
 216             }
 217         }
 218         for my $i ( 0..@$p-1 ) {
 219             my $element = $p->[$i];
 220             if ( ref( $element) eq 'HASH' ) {
 221                 while ( my ($key, $value) = each(%$element) ) {
 222                     next unless $key eq 'choices';
 223                     next unless ref($value) eq 'HASH';
 224                     for my $ckey ( keys %$value ) {
 225                         my $id = $self->{file} . "#$pref_name# " . $value->{$ckey};
 226                         my $text = $self->get_trans_text( $id );
 227                         $value->{$ckey} = $text if $text;
 228                     }
 229                 }
 230             }
 231             elsif ( $element ) {
 232                 my $id = $self->{file} . "#$pref_name# $element";
 233                 my $text = $self->get_trans_text( $id );
 234                 $p->[$i] = $text if $text;
 235             }
 236         }
 237     }
 238 }
 239
 240
 241 sub get_po_from_prefs {
 242     my $self = shift;
 243
 244     for my $file ( @{$self->{pref_files}} ) {
 245         my $pref = LoadFile( $self->{path_pref_en} . "/$file" );
 246         $self->{file} = $file;
 247         # Entries for tab titles
 248         $self->po_append( $self->{file}, $_ ) for keys %$pref;
 249         while ( my ($tab, $tab_content) = each %$pref ) {
 250             if ( ref($tab_content) eq 'ARRAY' ) {
 251                 $self->add_prefs( $tab, $tab_content );
 252                 next;
 253             }
 254             while ( my ($section, $sysprefs) = each %$tab_content ) {
 255                 my $comment = "$tab > $section";
 256                 $self->po_append( $self->{file} . " " . $section, $comment );
 257                 $self->add_prefs( $comment, $sysprefs );
 258             }
 259         }
 260     }
 261 }
 262
 263
 264 sub save_po {
 265     my $self = shift;
 266
 267     # Create file header if it doesn't already exist
 268     my $po = $self->{po};
 269     $po->{''} ||= $default_pref_po_header;
 270
 271     # Write .po entries into a file put in Koha standard po directory
 272     Locale::PO->save_file_fromhash( $self->po_filename, $po );
 273     say "Saved in file: ", $self->po_filename if $self->{verbose};
 274 }
 275
 276
 277 sub get_po_merged_with_en {
 278     my $self = shift;
 279
 280     # Get po from current 'en' .pref files
 281     $self->get_po_from_prefs();
 282     my $po_current = $self->{po};
 283
 284     # Get po from previous generation
 285     my $po_previous = Locale::PO->load_file_ashash( $self->po_filename );
 286
 287     for my $id ( keys %$po_current ) {
 288         my $po =  $po_previous->{Locale::PO->quote($id)};
 289         next unless $po;
 290         my $text = Locale::PO->dequote( $po->msgstr );
 291         $po_current->{$id}->msgstr( $text );
 292     }
 293 }
 294
 295
 296 sub update_prefs {
 297     my $self = shift;
 298     print "Update '", $self->{lang},
 299           "' preferences .po file from 'en' .pref files\n" if $self->{verbose};
 300     $self->get_po_merged_with_en();
 301     $self->save_po();
 302 }
 303
 304
 305 sub install_prefs {
 306     my $self = shift;
 307
 308     unless ( -r $self->{po_path_lang} ) {
 309         print "Koha directories hierarchy for ", $self->{lang}, " must be created first\n";
 310         exit;
 311     }
 312
 313     # Get the language .po file merged with last modified 'en' preferences
 314     $self->get_po_merged_with_en();
 315
 316     for my $file ( @{$self->{pref_files}} ) {
 317         my $pref = LoadFile( $self->{path_pref_en} . "/$file" );
 318         $self->{file} = $file;
 319         # First, keys are replaced (tab titles)
 320         $pref = do {
 321             my %pref = map {
 322                 $self->get_trans_text( $self->{file} ) || $_ => $pref->{$_}
 323             } keys %$pref;
 324             \%pref;
 325         };
 326         while ( my ($tab, $tab_content) = each %$pref ) {
 327             if ( ref($tab_content) eq 'ARRAY' ) {
 328                 $self->update_tab_prefs( $pref, $tab_content );
 329                 next;
 330             }
 331             while ( my ($section, $sysprefs) = each %$tab_content ) {
 332                 $self->update_tab_prefs( $pref, $sysprefs );
 333             }
 334             my $ntab = {};
 335             for my $section ( keys %$tab_content ) {
 336                 my $id = $self->{file} . " $section";
 337                 my $text = $self->get_trans_text($id);
 338                 my $nsection = $text ? $text : $section;
 339                 $ntab->{$nsection} = $tab_content->{$section};
 340             }
 341             $pref->{$tab} = $ntab;
 342         }
 343         my $file_trans = $self->{po_path_lang} . "/$file";
 344         print "Write $file\n" if $self->{verbose};
 345         open my $fh, ">", $file_trans;
 346         print $fh Dump($pref);
 347     }
 348 }
 349
 350
 351 sub install_tmpl {
 352     my ($self, $files) = @_;
 353     say "Install templates" if $self->{verbose};
 354     for my $trans ( @{$self->{interface}} ) {
 355         my @t_dirs = split(" ", $trans->{dir});
 356         for my $t_dir ( @t_dirs ) {
 357             my @files   = @$files;
 358             my @nomarc = ();
 359             print
 360                 "  Install templates '$trans->{name}'\n",
 361                 "    From: $t_dir/en/\n",
 362                 "    To  : $t_dir/$self->{lang}\n",
 363                 "    With: $self->{path_po}/$self->{lang}$trans->{suffix}\n"
 364                 if $self->{verbose};
 365
 366             my $trans_dir = ( $trans->{name} =~ /help/ )?"$t_dir":"$t_dir/en/";
 367             my $lang_dir  = ( $trans->{name} =~ /help/ )?"$t_dir":"$t_dir/$self->{lang}";
 368             $lang_dir =~ s|/en/|/$self->{lang}/|;
 369             mkdir $lang_dir unless -d $lang_dir;
 370             my $excludes = ( $trans->{name} !~ /help/   )?"":"-x 'help'";
 371             # if installing MARC po file, only touch corresponding files
 372             my $marc     = ( $trans->{name} =~ /MARC/ )?"-m \"$trans->{name}\"":"";            # for MARC translations
 373             # if not installing MARC po file, ignore all MARC files
 374             @nomarc      = ( 'marc21', 'unimarc', 'normarc' ) if ( $trans->{name} !~ /MARC/ ); # hardcoded MARC variants
 375
 376             system
 377                 "$self->{process} install " .
 378                 "-i $trans_dir " .
 379                 "-o $lang_dir  ".
 380                 "-s $self->{path_po}/$self->{lang}$trans->{suffix} -r " .
 381                 "$excludes " .
 382                 "$marc " .
 383                 ( @files   ? ' -f ' . join ' -f ', @files : '') .
 384                 ( @nomarc  ? ' -n ' . join ' -n ', @nomarc : '');
 385         }
 386     }
 387 }
 388
 389
 390 sub update_tmpl {
 391     my ($self, $files) = @_;
 392
 393     say "Update templates" if $self->{verbose};
 394     for my $trans ( @{$self->{interface}} ) {
 395         my @files   = @$files;
 396         my @nomarc = ();
 397         print
 398             "  Update templates '$trans->{name}'\n",
 399             "    From: $trans->{dir}/en/\n",
 400             "    To  : $self->{path_po}/$self->{lang}$trans->{suffix}\n"
 401                 if $self->{verbose};
 402
 403         my $trans_dir = ( $trans->{name} =~ /help/ )?"$trans->{dir}":join("/en/ -i ",split(" ",$trans->{dir}))."/en/"; # multiple source dirs
 404         # do no process 'help' dirs unless needed
 405         my $excludes  = ( $trans->{name} !~ /help/ )?"-x help":"";
 406         # if processing MARC po file, only use corresponding files
 407         my $marc      = ( $trans->{name} =~ /MARC/ )?"-m \"$trans->{name}\"":"";            # for MARC translations
 408         # if not processing MARC po file, ignore all MARC files
 409         @nomarc       = ( 'marc21', 'unimarc', 'normarc' ) if ( $trans->{name} !~ /MARC/ );      # hardcoded MARC variants
 410
 411         system
 412             "$self->{process} update " .
 413             "-i $trans_dir " .
 414             "-s $self->{path_po}/$self->{lang}$trans->{suffix} -r " .
 415             "$excludes " .
 416             "$marc "     .
 417             ( @files   ? ' -f ' . join ' -f ', @files : '') .
 418             ( @nomarc  ? ' -n ' . join ' -n ', @nomarc : '');
 419     }
 420 }
 421
 422
 423 sub create_prefs {
 424     my $self = shift;
 425
 426     if ( -e $self->po_filename ) {
 427         say "Preferences .po file already exists. Delete it if you want to recreate it.";
 428         return;
 429     }
 430     $self->get_po_from_prefs();
 431     $self->save_po();
 432 }
 433
 434
 435 sub create_tmpl {
 436     my ($self, $files) = @_;
 437
 438     say "Create templates\n" if $self->{verbose};
 439     for my $trans ( @{$self->{interface}} ) {
 440         my @files   = @$files;
 441         my @nomarc = ();
 442         print
 443             "  Create templates .po files for '$trans->{name}'\n",
 444             "    From: $trans->{dir}/en/\n",
 445             "    To  : $self->{path_po}/$self->{lang}$trans->{suffix}\n"
 446                 if $self->{verbose};
 447
 448         my $trans_dir = ( $trans->{name} =~ /help/ )?"$trans->{dir}":join("/en/ -i ",split(" ",$trans->{dir}))."/en/"; # multiple source dirs
 449         my $excludes  = ( $trans->{name} !~ /help/ )?"-x help":"";
 450         # if processing MARC po file, only use corresponding files
 451         my $marc      = ( $trans->{name} =~ /MARC/ )?"-m \"$trans->{name}\"":"";            # for MARC translations
 452         # if not processing MARC po file, ignore all MARC files
 453         @nomarc       = ( 'marc21', 'unimarc', 'normarc' ) if ( $trans->{name} !~ /MARC/ ); # hardcoded MARC variants
 454
 455         system
 456             "$self->{process} create " .
 457             "-i $trans_dir " .
 458             "-s $self->{path_po}/$self->{lang}$trans->{suffix} -r " .
 459             "$excludes " .
 460             "$marc " .
 461             ( @files  ? ' -f ' . join ' -f ', @files   : '') .
 462             ( @nomarc ? ' -n ' . join ' -n ', @nomarc : '');
 463     }
 464 }
 465
 466 sub create_messages {
 467     my $self = shift;
 468
 469     print "Create messages ($self->{lang})\n" if $self->{verbose};
 470     system
 471         "$self->{cp} $self->{domain}.pot " .
 472         "$self->{path_po}/$self->{lang}-$self->{domain}.po";
 473 }
 474
 475 sub update_messages {
 476     my $self = shift;
 477
 478     my $pofile = "$self->{path_po}/$self->{lang}-$self->{domain}.po";
 479     print "Update messages ($self->{lang})\n" if $self->{verbose};
 480     if ( not -f $pofile ) {
 481         print "File $pofile does not exist\n" if $self->{verbose};
 482         $self->create_messages();
 483     }
 484     system "$self->{msgmerge} -U $pofile $self->{domain}.pot";
 485 }
 486
 487 sub extract_messages {
 488     my $self = shift;
 489
 490     my $intranetdir = $self->{context}->config('intranetdir');
 491     my @files_to_scan;
 492     my @directories_to_scan = ('.');
 493     my @blacklist = qw(blib koha-tmpl skel tmp t);
 494     while (@directories_to_scan) {
 495         my $dir = shift @directories_to_scan;
 496         opendir DIR, "$intranetdir/$dir" or die "Unable to open $dir: $!";
 497         foreach my $entry (readdir DIR) {
 498             next if $entry =~ /^\./;
 499             my $relentry = "$dir/$entry";
 500             $relentry =~ s|^\./||;
 501             if (-d "$intranetdir/$relentry" and not grep /^$relentry$/, @blacklist) {
 502                 push @directories_to_scan, "$relentry";
 503             } elsif (-f "$intranetdir/$relentry" and $relentry =~ /(pl|pm)$/) {
 504                 push @files_to_scan, "$relentry";
 505             }
 506         }
 507     }
 508
 509     my $xgettext_cmd = "$self->{xgettext} -L Perl --from-code=UTF-8 " .
 510         "-o $Bin/$self->{domain}.pot -D $intranetdir";
 511     $xgettext_cmd .= " $_" foreach (@files_to_scan);
 512
 513     if (system($xgettext_cmd) != 0) {
 514         die "system call failed: $xgettext_cmd";
 515     }
 516
 517     if ( -f "$Bin/$self->{domain}.pot" ) {
 518         my $replace_charset_cmd = "$self->{sed} --in-place " .
 519             "$Bin/$self->{domain}.pot " .
 520             "--expression='s/charset=CHARSET/charset=UTF-8/'";
 521         if (system($replace_charset_cmd) != 0) {
 522             die "system call failed: $replace_charset_cmd";
 523         }
 524     } else {
 525         print "No messages found\n" if $self->{verbose};
 526         return;
 527     }
 528     return 1;
 529 }
 530
 531 sub remove_pot {
 532     my $self = shift;
 533
 534     unlink "$Bin/$self->{domain}.pot";
 535 }
 536
 537 sub install {
 538     my ($self, $files) = @_;
 539     return unless $self->{lang};
 540     $self->install_tmpl($files) unless $self->{pref_only};
 541     $self->install_prefs();
 542 }
 543
 544
 545 sub get_all_langs {
 546     my $self = shift;
 547     opendir( my $dh, $self->{path_po} );
 548     my @files = grep { $_ =~ /-pref.po$/ }
 549         readdir $dh;
 550     @files = map { $_ =~ s/-pref.po$//; $_ } @files;
 551 }
 552
 553
 554 sub update {
 555     my ($self, $files) = @_;
 556     my @langs = $self->{lang} ? ($self->{lang}) : $self->get_all_langs();
 557     my $extract_ok = $self->extract_messages();
 558     for my $lang ( @langs ) {
 559         $self->set_lang( $lang );
 560         $self->update_tmpl($files) unless $self->{pref_only};
 561         $self->update_prefs();
 562         $self->update_messages() if $extract_ok;
 563     }
 564     $self->remove_pot() if $extract_ok;
 565 }
 566
 567
 568 sub create {
 569     my ($self, $files) = @_;
 570     return unless $self->{lang};
 571     $self->create_tmpl($files) unless $self->{pref_only};
 572     $self->create_prefs();
 573     if ($self->extract_messages()) {
 574         $self->create_messages();
 575         $self->remove_pot();
 576     }
 577 }
 578
 579
 580
 581 1;
 582
 583
 584 =head1 NAME
 585
 586 LangInstaller.pm - Handle templates and preferences translation
 587
 588 =head1 SYNOPSYS
 589
 590   my $installer = LangInstaller->new( 'fr-FR' );
 591   $installer->create();
 592   $installer->update();
 593   $installer->install();
 594   for my $lang ( @{$installer->{langs} ) {
 595     $installer->set_lang( $lan );
 596     $installer->install();
 597   }
 598
 599 =head1 METHODS
 600
 601 =head2 new
 602
 603 Create a new instance of the installer object.
 604
 605 =head2 create
 606
 607 For the current language, create .po files for templates and preferences based
 608 of the english ('en') version.
 609
 610 =head2 update
 611
 612 For the current language, update .po files.
 613
 614 =head2 install
 615
 616 For the current langage C<$self->{lang}, use .po files to translate the english
 617 version of templates and preferences files and copy those files in the
 618 appropriate directory.
 619
 620 =over
 621
 622 =item translate create F<lang>
 623
 624 Create 4 kinds of .po files in F<po> subdirectory:
 625 (1) one from each theme on opac pages templates,
 626 (2) intranet templates and help,
 627 (3) preferences, and
 628 (4) one for each MARC dialect.
 629
 630
 631 =over
 632
 633 =item F<lang>-opac-{theme}.po
 634
 635 Contains extracted text from english (en) OPAC templates found in
 636 <KOHA_ROOT>/koha-tmpl/opac-tmpl/{theme}/en/ directory.
 637
 638 =item F<lang>-staff-prog.po and F<lang>-staff-help.po
 639
 640 Contains extracted text from english (en) intranet templates found in
 641 <KOHA_ROOT>/koha-tmpl/intranet-tmpl/prog/en/ directory.
 642
 643 =item F<lang>-pref.po
 644
 645 Contains extracted text from english (en) preferences. They are found in files
 646 located in <KOHA_ROOT>/koha-tmpl/intranet-tmpl/prog/en/admin/preferences
 647 directory.
 648
 649 =item F<lang>-marc-{MARC}.po
 650
 651 Contains extracted text from english (en) files from opac and intranet,
 652 related with MARC dialects.
 653
 654 =back
 655
 656 =item pref-trans update F<lang>
 657
 658 Update .po files in F<po> directory, named F<lang>-*.po.
 659
 660 =item pref-trans install F<lang>
 661
 662 =back
 663
 664 =cut
 665