misc/translator/tmpl_process3.pl

   1 #!/usr/bin/perl
   2 # This file is part of Koha
   3 # Parts copyright 2003-2004 Paul Poulain
   4 # Parts copyright 2003-2004 Jerome Vizcaino
   5 # Parts copyright 2004 Ambrose Li
   6
   7 =head1 NAME
   8
   9 tmpl_process3.pl - Alternative version of tmpl_process.pl
  10 using gettext-compatible translation files
  11
  12 =cut
  13
  14 use strict;
  15 use Getopt::Long;
  16 use Locale::PO;
  17 use File::Temp qw( :POSIX );
  18 use TmplTokenizer;
  19 use VerboseWarnings qw( :warn :die );
  20
  21 ###############################################################################
  22
  23 use vars qw( @in_files $in_dir $str_file $out_dir $quiet );
  24 use vars qw( @excludes $exclude_regex );
  25 use vars qw( $recursive_p );
  26 use vars qw( $pedantic_p );
  27 use vars qw( $href );
  28 use vars qw( $type );   # file extension (DOS form without the dot) to match
  29 use vars qw( $charset_in $charset_out );
  30
  31 ###############################################################################
  32
  33 sub find_translation ($) {
  34     my($s) = @_;
  35     my $key = $s;
  36     if ($s =~ /\S/s) {
  37     $key = TmplTokenizer::string_canon($key);
  38     $key = TmplTokenizer::charset_convert($key, $charset_in, $charset_out);
  39     $key = TmplTokenizer::quote_po($key);
  40     }
  41     return defined $href->{$key}
  42         && !$href->{$key}->fuzzy
  43         && length Locale::PO->dequote($href->{$key}->msgstr)?
  44        Locale::PO->dequote($href->{$key}->msgstr): $s;
  45 }
  46
  47 sub text_replace_tag ($$) {
  48     my($t, $attr) = @_;
  49     my $it;
  50     # value [tag=input], meta
  51     my $tag = lc($1) if $t =~ /^<(\S+)/s;
  52     my $translated_p = 0;
  53     for my $a ('alt', 'content', 'title', 'value','label') {
  54     if ($attr->{$a}) {
  55         next if $a eq 'label' && $tag ne 'optgroup';
  56         next if $a eq 'content' && $tag ne 'meta';
  57         next if $a eq 'value' && ($tag ne 'input'
  58         || (ref $attr->{'type'} && $attr->{'type'}->[1] =~ /^(?:checkbox|hidden|radio|text)$/)); # FIXME
  59         my($key, $val, $val_orig, $order) = @{$attr->{$a}}; #FIXME
  60         if ($val =~ /\S/s) {
  61         my $s = find_translation($val);
  62         if ($attr->{$a}->[1] ne $s) { #FIXME
  63             $attr->{$a}->[1] = $s; # FIXME
  64             $attr->{$a}->[2] = ($s =~ /"/s)? "'$s'": "\"$s\""; #FIXME
  65             $translated_p = 1;
  66         }
  67         }
  68     }
  69     }
  70     if ($translated_p) {
  71     $it = "<$tag"
  72         . join('', map {
  73             sprintf(' %s=%s', $_, $attr->{$_}->[2]) #FIXME
  74         } sort {
  75             $attr->{$a}->[3] <=> $attr->{$b}->[3] #FIXME
  76         } keys %$attr)
  77         . '>';
  78     } else {
  79     $it = $t;
  80     }
  81     return $it;
  82 }
  83
  84 sub text_replace (**) {
  85     my($h, $output) = @_;
  86     for (;;) {
  87     my $s = TmplTokenizer::next_token $h;
  88     last unless defined $s;
  89     my($kind, $t, $attr) = ($s->type, $s->string, $s->attributes);
  90     if ($kind eq TmplTokenType::TEXT) {
  91         print $output find_translation($t);
  92     } elsif ($kind eq TmplTokenType::TEXT_PARAMETRIZED) {
  93         my $fmt = find_translation($s->form);
  94         print $output TmplTokenizer::parametrize($fmt, 1, $s, sub {
  95         $_ = $_[0];
  96         my($kind, $t, $attr) = ($_->type, $_->string, $_->attributes);
  97         $kind == TmplTokenType::TAG && %$attr?
  98             text_replace_tag($t, $attr): $t });
  99     } elsif ($kind eq TmplTokenType::TAG && %$attr) {
 100         print $output text_replace_tag($t, $attr);
 101     } elsif ($s->has_js_data) {
 102         for my $t (@{$s->js_data}) {
 103         # FIXME for this whole block
 104         if ($t->[0]) {
 105             printf $output "%s%s%s", $t->[2], find_translation $t->[3],
 106                 $t->[2];
 107         } else {
 108             print $output $t->[1];
 109         }
 110         }
 111     } elsif (defined $t) {
 112         print $output $t;
 113     }
 114     }
 115 }
 116
 117 sub listfiles ($$$) {
 118     my($dir, $type, $action) = @_;
 119     my @it = ();
 120     if (opendir(DIR, $dir)) {
 121     my @dirent = readdir DIR;   # because DIR is shared when recursing
 122     closedir DIR;
 123     for my $dirent (@dirent) {
 124         my $path = "$dir/$dirent";
 125         if ($dirent =~ /^\./ || $dirent eq 'CVS' || $dirent eq 'RCS'
 126         || (defined $exclude_regex && $dirent =~ /^(?:$exclude_regex)$/)) {
 127         ;
 128         } elsif (-f $path) {
 129         push @it, $path if (!defined $type || $dirent =~ /\.(?:$type)$/) || $action eq 'install';
 130         } elsif (-d $path && $recursive_p) {
 131         push @it, listfiles($path, $type, $action);
 132         }
 133     }
 134     } else {
 135     warn_normal "$dir: $!", undef;
 136     }
 137     return @it;
 138 }
 139
 140 ###############################################################################
 141
 142 sub mkdir_recursive ($) {
 143     my($dir) = @_;
 144     local($`, $&, $', $1);
 145     $dir = $` if $dir ne /^\/+$/ && $dir =~ /\/+$/;
 146     my ($prefix, $basename) = ($dir =~ /\/([^\/]+)$/s)? ($`, $1): ('.', $dir);
 147     mkdir_recursive($prefix) if $prefix ne '.' && !-d $prefix;
 148     if (!-d $dir) {
 149     print STDERR "Making directory $dir..." unless $quiet;
 150     # creates with rwxrwxr-x permissions
 151     mkdir($dir, 0775) || warn_normal "$dir: $!", undef;
 152     }
 153 }
 154
 155 ###############################################################################
 156
 157 sub usage ($) {
 158     my($exitcode) = @_;
 159     my $h = $exitcode? *STDERR: *STDOUT;
 160     print $h <<EOF;
 161 Usage: $0 create [OPTION]
 162   or:  $0 update [OPTION]
 163   or:  $0 install [OPTION]
 164   or:  $0 --help
 165 Create or update PO files from templates, or install translated templates.
 166
 167   -i, --input=SOURCE          Get or update strings from SOURCE file.
 168                               SOURCE is a directory if -r is also specified.
 169   -o, --outputdir=DIRECTORY   Install translation(s) to specified DIRECTORY
 170       --pedantic-warnings     Issue warnings even for detected problems
 171                               which are likely to be harmless
 172   -r, --recursive             SOURCE in the -i option is a directory
 173   -s, --str-file=FILE         Specify FILE as the translation (po) file
 174                               for input (install) or output (create, update)
 175   -x, --exclude=REGEXP        Exclude files matching the given REGEXP
 176       --help                  Display this help and exit
 177   -q, --quiet                 no output to screen (except for errors)
 178
 179 The -o option is ignored for the "create" and "update" actions.
 180 Try `perldoc $0 for perhaps more information.
 181 EOF
 182     exit($exitcode);
 183 }#`
 184
 185 ###############################################################################
 186
 187 sub usage_error (;$) {
 188     for my $msg (split(/\n/, $_[0])) {
 189     print STDERR "$msg\n";
 190     }
 191     print STDERR "Try `$0 --help for more information.\n";
 192     exit(-1);
 193 }
 194
 195 ###############################################################################
 196
 197 GetOptions(
 198     'input|i=s'             => \@in_files,
 199     'outputdir|o=s'         => \$out_dir,
 200     'recursive|r'           => \$recursive_p,
 201     'str-file|s=s'          => \$str_file,
 202     'exclude|x=s'           => \@excludes,
 203     'quiet|q'               => \$quiet,
 204     'pedantic-warnings|pedantic'    => sub { $pedantic_p = 1 },
 205     'help'              => \&usage,
 206 ) || usage_error;
 207
 208 VerboseWarnings::set_application_name $0;
 209 VerboseWarnings::set_pedantic_mode $pedantic_p;
 210
 211 # keep the buggy Locale::PO quiet if it says stupid things
 212 $SIG{__WARN__} = sub {
 213     my($s) = @_;
 214     print STDERR $s unless $s =~ /^Strange line in [^:]+: #~/s
 215     };
 216
 217 my $action = shift or usage_error('You must specify an ACTION.');
 218 usage_error('You must at least specify input and string list filenames.')
 219     if !@in_files || !defined $str_file;
 220
 221 # Type match defaults to *.tmpl plus *.inc if not specified
 222 $type = "tmpl|inc|xsl" if !defined($type);
 223
 224 # Check the inputs for being files or directories
 225 for my $input (@in_files) {
 226     usage_error("$input: Input must be a file or directory.\n"
 227         . "(Symbolic links are not supported at the moment)")
 228     unless -d $input || -f $input;;
 229 }
 230
 231 # Generates the global exclude regular expression
 232 $exclude_regex =  '(?:'.join('|', @excludes).')' if @excludes;
 233
 234 # Generate the list of input files if a directory is specified
 235 if (-d $in_files[0]) {
 236     die "If you specify a directory as input, you must specify only it.\n"
 237         if @in_files > 1;
 238
 239     # input is a directory, generates list of files to process
 240     $in_dir = $in_files[0];
 241     $in_dir =~ s/\/$//; # strips the trailing / if any
 242     @in_files = listfiles($in_dir, $type, $action);
 243 } else {
 244     for my $input (@in_files) {
 245     die "You cannot specify input files and directories at the same time.\n"
 246         unless -f $input;
 247     }
 248 }
 249
 250 # restores the string list from file
 251 $href = Locale::PO->load_file_ashash($str_file);
 252
 253 # guess the charsets. HTML::Templates defaults to iso-8859-1
 254 if (defined $href) {
 255     die "$str_file: PO file is corrupted, or not a PO file\n" unless defined $href->{'""'};
 256     $charset_out = TmplTokenizer::charset_canon $2 if $href->{'""'}->msgstr =~ /\bcharset=(["']?)([^;\s"'\\]+)\1/;
 257     $charset_in = $charset_out;
 258     warn "Charset in/out: ".$charset_out;
 259 #     for my $msgid (keys %$href) {
 260 #   if ($msgid =~ /\bcharset=(["']?)([^;\s"'\\]+)\1/) {
 261 #       my $candidate = TmplTokenizer::charset_canon $2;
 262 #       die "Conflicting charsets in msgid: $charset_in vs $candidate => $msgid\n"
 263 #           if defined $charset_in && $charset_in ne $candidate;
 264 #       $charset_in = $candidate;
 265 #   }
 266 #     }
 267 }
 268
 269 # set our charset in to UTF-8
 270 if (!defined $charset_in) {
 271     $charset_in = TmplTokenizer::charset_canon 'UTF-8';
 272     warn "Warning: Can't determine original templates' charset, defaulting to $charset_in\n";
 273 }
 274 # set our charset out to UTF-8
 275 if (!defined $charset_out) {
 276     $charset_out = TmplTokenizer::charset_canon 'UTF-8';
 277     warn "Warning: Charset Out defaulting to $charset_out\n";
 278 }
 279 my $xgettext = './xgettext.pl'; # actual text extractor script
 280 my $st;
 281
 282 if ($action eq 'create')  {
 283     # updates the list. As the list is empty, every entry will be added
 284     if (!-s $str_file) {
 285     warn "Removing empty file $str_file\n";
 286     unlink $str_file || die "$str_file: $!\n";
 287     }
 288     die "$str_file: Output file already exists\n" if -f $str_file;
 289     my($tmph1, $tmpfile1) = tmpnam();
 290     my($tmph2, $tmpfile2) = tmpnam();
 291     close $tmph2; # We just want a name
 292     # Generate the temporary file that acts as <MODULE>/POTFILES.in
 293     for my $input (@in_files) {
 294     print $tmph1 "$input\n";
 295     }
 296     close $tmph1;
 297     warn "I $charset_in O $charset_out";
 298     # Generate the specified po file ($str_file)
 299     $st = system ($xgettext, '-s', '-f', $tmpfile1, '-o', $tmpfile2,
 300             (defined $charset_in? ('-I', $charset_in): ()),
 301             (defined $charset_out? ('-O', $charset_out): ())
 302     );
 303     # Run msgmerge so that the pot file looks like a real pot file
 304     # We need to help msgmerge a bit by pre-creating a dummy po file that has
 305     # the headers and the "" msgid & msgstr. It will fill in the rest.
 306     if ($st == 0) {
 307     # Merge the temporary "pot file" with the specified po file ($str_file)
 308     # FIXME: msgmerge(1) is a Unix dependency
 309     # FIXME: need to check the return value
 310     unless (-f $str_file) {
 311         local(*INPUT, *OUTPUT);
 312         open(INPUT, "<$tmpfile2");
 313         open(OUTPUT, ">$str_file");
 314         while (<INPUT>) {
 315         print OUTPUT;
 316         last if /^\n/s;
 317         }
 318         close INPUT;
 319         close OUTPUT;
 320     }
 321     $st = system('msgmerge', '-U', '-s', $str_file, $tmpfile2);
 322     } else {
 323     error_normal "Text extraction failed: $xgettext: $!\n", undef;
 324     error_additional "Will not run msgmerge\n", undef;
 325     }
 326 #   unlink $tmpfile1 || warn_normal "$tmpfile1: unlink failed: $!\n", undef;
 327 #   unlink $tmpfile2 || warn_normal "$tmpfile2: unlink failed: $!\n", undef;
 328
 329 } elsif ($action eq 'update') {
 330     my($tmph1, $tmpfile1) = tmpnam();
 331     my($tmph2, $tmpfile2) = tmpnam();
 332     close $tmph2; # We just want a name
 333     # Generate the temporary file that acts as <MODULE>/POTFILES.in
 334     for my $input (@in_files) {
 335     print $tmph1 "$input\n";
 336     }
 337     close $tmph1;
 338     # Generate the temporary file that acts as <MODULE>/<LANG>.pot
 339     $st = system($xgettext, '-s', '-f', $tmpfile1, '-o', $tmpfile2,
 340         '--po-mode',
 341         (defined $charset_in? ('-I', $charset_in): ()),
 342         (defined $charset_out? ('-O', $charset_out): ()));
 343     if ($st == 0) {
 344     # Merge the temporary "pot file" with the specified po file ($str_file)
 345     # FIXME: msgmerge(1) is a Unix dependency
 346     # FIXME: need to check the return value
 347     $st = system('msgmerge', '-U', '-s', $str_file, $tmpfile2);
 348     } else {
 349     error_normal "Text extraction failed: $xgettext: $!\n", undef;
 350     error_additional "Will not run msgmerge\n", undef;
 351     }
 352 #   unlink $tmpfile1 || warn_normal "$tmpfile1: unlink failed: $!\n", undef;
 353 #   unlink $tmpfile2 || warn_normal "$tmpfile2: unlink failed: $!\n", undef;
 354
 355 } elsif ($action eq 'install') {
 356     if(!defined($out_dir)) {
 357     usage_error("You must specify an output directory when using the install method.");
 358     }
 359
 360     if ($in_dir eq $out_dir) {
 361     warn "You must specify a different input and output directory.\n";
 362     exit -1;
 363     }
 364
 365     # Make sure the output directory exists
 366     # (It will auto-create it, but for compatibility we should not)
 367     -d $out_dir || die "$out_dir: The directory does not exist\n";
 368
 369     # Try to open the file, because Locale::PO doesn't check :-/
 370     open(INPUT, "<$str_file") || die "$str_file: $!\n";
 371     close INPUT;
 372
 373     # creates the new tmpl file using the new translation
 374     for my $input (@in_files) {
 375         die "Assertion failed"
 376             unless substr($input, 0, length($in_dir) + 1) eq "$in_dir/";
 377 #       print "$input / $type\n";
 378         if (!defined $type || $input =~ /\.(?:$type)$/) {
 379             my $h = TmplTokenizer->new( $input );
 380             $h->set_allow_cformat( 1 );
 381             VerboseWarnings::set_input_file_name $input;
 382
 383             my $target = $out_dir . substr($input, length($in_dir));
 384             my $targetdir = $` if $target =~ /[^\/]+$/s;
 385             mkdir_recursive($targetdir) unless -d $targetdir;
 386             print STDERR "Creating $target...\n" unless $quiet;
 387             open( OUTPUT, ">$target" ) || die "$target: $!\n";
 388             text_replace( $h, *OUTPUT );
 389             close OUTPUT;
 390         } else {
 391         # just copying the file
 392             my $target = $out_dir . substr($input, length($in_dir));
 393             my $targetdir = $` if $target =~ /[^\/]+$/s;
 394             mkdir_recursive($targetdir) unless -d $targetdir;
 395             system("cp -f $input $target");
 396             print STDERR "Copying $input...\n" unless $quiet;
 397         }
 398     }
 399
 400 } else {
 401     usage_error('Unknown action specified.');
 402 }
 403
 404 if ($st == 0) {
 405     printf "The %s seems to be successful.\n", $action unless $quiet;
 406 } else {
 407     printf "%s FAILED.\n", "\u$action" unless $quiet;
 408 }
 409 exit 0;
 410
 411 ###############################################################################
 412
 413 =head1 SYNOPSIS
 414
 415 ./tmpl_process3.pl [ I<tmpl_process.pl options> ]
 416
 417 =head1 DESCRIPTION
 418
 419 This is an alternative version of the tmpl_process.pl script,
 420 using standard gettext-style PO files.  While there still might
 421 be changes made to the way it extracts strings, at this moment
 422 it should be stable enough for general use; it is already being
 423 used for the Chinese and Polish translations.
 424
 425 Currently, the create, update, and install actions have all been
 426 reimplemented and seem to work.
 427
 428 =head2 Features
 429
 430 =over
 431
 432 =item -
 433
 434 Translation files in standard Uniforum PO format.
 435 All standard tools including all gettext tools,
 436 plus PO file editors like kbabel(1) etc.
 437 can be used.
 438
 439 =item -
 440
 441 Minor changes in whitespace in source templates
 442 do not generally require strings to be re-translated.
 443
 444 =item -
 445
 446 Able to handle <TMPL_VAR> variables in the templates;
 447 <TMPL_VAR> variables are usually extracted in proper context,
 448 represented by a short %s placeholder.
 449
 450 =item -
 451
 452 Able to handle text input and radio button INPUT elements
 453 in the templates; these INPUT elements are also usually
 454 extracted in proper context,
 455 represented by a short %S or %p placeholder.
 456
 457 =item -
 458
 459 Automatic comments in the generated PO files to provide
 460 even more context (line numbers, and the names and types
 461 of the variables).
 462
 463 =item -
 464
 465 The %I<n>$s (or %I<n>$p, etc.) notation can be used
 466 for change the ordering of the variables,
 467 if such a reordering is required for correct translation.
 468
 469 =item -
 470
 471 If a particular <TMPL_VAR> should not appear in the
 472 translation, it can be suppressed with the %0.0s notation.
 473
 474 =item -
 475
 476 Using the PO format also means translators can add their
 477 own comments in the translation files, if necessary.
 478
 479 =item -
 480
 481 Create, update, and install actions are all based on the
 482 same scanner module. This ensures that update and install
 483 have the same idea of what is a translatable string;
 484 attribute names in tags, for example, will not be
 485 accidentally translated.
 486
 487 =back
 488
 489 =head1 NOTES
 490
 491 Anchors are represented by an <AI<n>> notation.
 492 The meaning of this non-standard notation might not be obvious.
 493
 494 The create action calls xgettext.pl to do the actual work;
 495 the update action calls xgettext.pl and msgmerge(1) to do the
 496 actual work.
 497
 498 =head1 BUGS
 499
 500 xgettext.pl must be present in the current directory; the
 501 msgmerge(1) command must also be present in the search path.
 502 The script currently does not check carefully whether these
 503 dependent commands are present.
 504
 505 Locale::PO(3) has a lot of bugs. It can neither parse nor
 506 generate GNU PO files properly; a couple of workarounds have
 507 been written in TmplTokenizer and more is likely to be needed
 508 (e.g., to get rid of the "Strange line" warning for #~).
 509
 510 This script may not work in Windows.
 511
 512 There are probably some other bugs too, since this has not been
 513 tested very much.
 514
 515 =head1 SEE ALSO
 516
 517 xgettext.pl,
 518 TmplTokenizer.pm,
 519 msgmerge(1),
 520 Locale::PO(3),
 521 translator_doc.txt
 522
 523 http://www.saas.nsw.edu.au/koha_wiki/index.php?page=DifficultTerms
 524
 525 =cut