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 warnings; FIXME - Bug 2505
  16 use Getopt::Long;
  17 use Locale::PO;
  18 use File::Temp qw( :POSIX );
  19 use TmplTokenizer;
  20 use VerboseWarnings qw( :warn :die );
  21
  22 ###############################################################################
  23
  24 use vars qw( @in_files $in_dir $str_file $out_dir $quiet );
  25 use vars qw( @excludes $exclude_regex );
  26 use vars qw( $recursive_p );
  27 use vars qw( $pedantic_p );
  28 use vars qw( $href );
  29 use vars qw( $type );   # file extension (DOS form without the dot) to match
  30 use vars qw( $charset_in $charset_out );
  31
  32 ###############################################################################
  33
  34 sub find_translation ($) {
  35     my($s) = @_;
  36     my $key = $s;
  37     if ($s =~ /\S/s) {
  38       $key = TmplTokenizer::string_canon($key);
  39       $key = TmplTokenizer::charset_convert($key, $charset_in, $charset_out);
  40       $key = TmplTokenizer::quote_po($key);
  41     }
  42     if (defined $href->{$key} && !$href->{$key}->fuzzy && length Locale::PO->dequote($href->{$key}->msgstr)){
  43         if ($s =~ /^(\s+)/){
  44             return $1 . Locale::PO->dequote($href->{$key}->msgstr);
  45         }
  46         else {
  47             return Locale::PO->dequote($href->{$key}->msgstr);
  48         }
  49     }
  50     else {
  51         return $s;
  52     }
  53 }
  54
  55 sub text_replace_tag ($$) {
  56     my($t, $attr) = @_;
  57     my $it;
  58
  59     # value [tag=input], meta
  60     my $tag = lc($1) if $t =~ /^<(\S+)/s;
  61     my $translated_p = 0;
  62     for my $a ('alt', 'content', 'title', 'value','label') {
  63     if ($attr->{$a}) {
  64         next if $a eq 'label' && $tag ne 'optgroup';
  65         next if $a eq 'content' && $tag ne 'meta';
  66         next if $a eq 'value' && ($tag ne 'input' || (ref $attr->{'type'} && $attr->{'type'}->[1] =~ /^(?:checkbox|hidden|radio|text)$/)); # FIXME
  67
  68         my($key, $val, $val_orig, $order) = @{$attr->{$a}}; #FIXME
  69         if ($val =~ /\S/s) {
  70         my $s = find_translation($val);
  71         if ($attr->{$a}->[1] ne $s) { #FIXME
  72             $attr->{$a}->[1] = $s; # FIXME
  73             $attr->{$a}->[2] = ($s =~ /"/s)? "'$s'": "\"$s\""; #FIXME
  74             $translated_p = 1;
  75         }
  76         }
  77     }
  78     }
  79     if ($translated_p) {
  80      $it = "<$tag"
  81           . join('', map { if ($_ ne '/'){
  82                              sprintf(' %s="%s"', $_, $attr->{$_}->[1]);
  83           }
  84               else {
  85                   sprintf(' %s',$_);
  86                   }
  87
  88               } sort {
  89                   $attr->{$a}->[3] <=> $attr->{$b}->[3] #FIXME
  90               } keys %$attr);
  91         $it .= '>';
  92     }
  93     else {
  94         $it = $t;
  95     }
  96     return $it;
  97 }
  98
  99 sub text_replace (**) {
 100     my($h, $output) = @_;
 101     for (;;) {
 102     my $s = TmplTokenizer::next_token $h;
 103     last unless defined $s;
 104     my($kind, $t, $attr) = ($s->type, $s->string, $s->attributes);
 105     if ($kind eq C4::TmplTokenType::TEXT) {
 106         print $output find_translation($t);
 107     } elsif ($kind eq C4::TmplTokenType::TEXT_PARAMETRIZED) {
 108         my $fmt = find_translation($s->form);
 109         print $output TmplTokenizer::parametrize($fmt, 1, $s, sub {
 110         $_ = $_[0];
 111         my($kind, $t, $attr) = ($_->type, $_->string, $_->attributes);
 112         $kind == C4::TmplTokenType::TAG && %$attr?
 113             text_replace_tag($t, $attr): $t });
 114     } elsif ($kind eq C4::TmplTokenType::TAG && %$attr) {
 115         print $output text_replace_tag($t, $attr);
 116     } elsif ($s->has_js_data) {
 117         for my $t (@{$s->js_data}) {
 118         # FIXME for this whole block
 119         if ($t->[0]) {
 120             printf $output "%s%s%s", $t->[2], find_translation $t->[3],
 121                 $t->[2];
 122         } else {
 123             print $output $t->[1];
 124         }
 125         }
 126     } elsif (defined $t) {
 127         # Quick fix to bug 4472
 128         $t = "<!DOCTYPE stylesheet ["  if $t =~ /DOCTYPE stylesheet/ ;
 129         print $output $t;
 130     }
 131     }
 132 }
 133
 134 sub listfiles ($$$) {
 135     my($dir, $type, $action) = @_;
 136     my @it = ();
 137     if (opendir(DIR, $dir)) {
 138     my @dirent = readdir DIR;   # because DIR is shared when recursing
 139     closedir DIR;
 140     for my $dirent (@dirent) {
 141         my $path = "$dir/$dirent";
 142         if ($dirent =~ /^\./ || $dirent eq 'CVS' || $dirent eq 'RCS'
 143         || (defined $exclude_regex && $dirent =~ /^(?:$exclude_regex)$/)) {
 144         ;
 145         } elsif (-f $path) {
 146         push @it, $path if (!defined $type || $dirent =~ /\.(?:$type)$/) || $action eq 'install';
 147         } elsif (-d $path && $recursive_p) {
 148         push @it, listfiles($path, $type, $action);
 149         }
 150     }
 151     } else {
 152     warn_normal "$dir: $!", undef;
 153     }
 154     return @it;
 155 }
 156
 157 ###############################################################################
 158
 159 sub mkdir_recursive ($) {
 160     my($dir) = @_;
 161     local($`, $&, $', $1);
 162     $dir = $` if $dir ne /^\/+$/ && $dir =~ /\/+$/;
 163     my ($prefix, $basename) = ($dir =~ /\/([^\/]+)$/s)? ($`, $1): ('.', $dir);
 164     mkdir_recursive($prefix) if $prefix ne '.' && !-d $prefix;
 165     if (!-d $dir) {
 166     print STDERR "Making directory $dir..." unless $quiet;
 167     # creates with rwxrwxr-x permissions
 168     mkdir($dir, 0775) || warn_normal "$dir: $!", undef;
 169     }
 170 }
 171
 172 ###############################################################################
 173
 174 sub usage ($) {
 175     my($exitcode) = @_;
 176     my $h = $exitcode? *STDERR: *STDOUT;
 177     print $h <<EOF;
 178 Usage: $0 create [OPTION]
 179   or:  $0 update [OPTION]
 180   or:  $0 install [OPTION]
 181   or:  $0 --help
 182 Create or update PO files from templates, or install translated templates.
 183
 184   -i, --input=SOURCE          Get or update strings from SOURCE file.
 185                               SOURCE is a directory if -r is also specified.
 186   -o, --outputdir=DIRECTORY   Install translation(s) to specified DIRECTORY
 187       --pedantic-warnings     Issue warnings even for detected problems
 188                               which are likely to be harmless
 189   -r, --recursive             SOURCE in the -i option is a directory
 190   -s, --str-file=FILE         Specify FILE as the translation (po) file
 191                               for input (install) or output (create, update)
 192   -x, --exclude=REGEXP        Exclude files matching the given REGEXP
 193       --help                  Display this help and exit
 194   -q, --quiet                 no output to screen (except for errors)
 195
 196 The -o option is ignored for the "create" and "update" actions.
 197 Try `perldoc $0 for perhaps more information.
 198 EOF
 199     exit($exitcode);
 200 }#`
 201
 202 ###############################################################################
 203
 204 sub usage_error (;$) {
 205     for my $msg (split(/\n/, $_[0])) {
 206     print STDERR "$msg\n";
 207     }
 208     print STDERR "Try `$0 --help for more information.\n";
 209     exit(-1);
 210 }
 211
 212 ###############################################################################
 213
 214 GetOptions(
 215     'input|i=s'             => \@in_files,
 216     'outputdir|o=s'         => \$out_dir,
 217     'recursive|r'           => \$recursive_p,
 218     'str-file|s=s'          => \$str_file,
 219     'exclude|x=s'           => \@excludes,
 220     'quiet|q'               => \$quiet,
 221     'pedantic-warnings|pedantic'    => sub { $pedantic_p = 1 },
 222     'help'              => \&usage,
 223 ) || usage_error;
 224
 225 VerboseWarnings::set_application_name $0;
 226 VerboseWarnings::set_pedantic_mode $pedantic_p;
 227
 228 # keep the buggy Locale::PO quiet if it says stupid things
 229 $SIG{__WARN__} = sub {
 230     my($s) = @_;
 231     print STDERR $s unless $s =~ /^Strange line in [^:]+: #~/s
 232     };
 233
 234 my $action = shift or usage_error('You must specify an ACTION.');
 235 usage_error('You must at least specify input and string list filenames.')
 236     if !@in_files || !defined $str_file;
 237
 238 # Type match defaults to *.tt plus *.inc if not specified
 239 $type = "tt|inc|xsl" if !defined($type);
 240
 241 # Check the inputs for being files or directories
 242 for my $input (@in_files) {
 243     usage_error("$input: Input must be a file or directory.\n"
 244         . "(Symbolic links are not supported at the moment)")
 245     unless -d $input || -f $input;;
 246 }
 247
 248 # Generates the global exclude regular expression
 249 $exclude_regex =  '(?:'.join('|', @excludes).')' if @excludes;
 250
 251 # Generate the list of input files if a directory is specified
 252 if (-d $in_files[0]) {
 253     die "If you specify a directory as input, you must specify only it.\n"
 254         if @in_files > 1;
 255
 256     # input is a directory, generates list of files to process
 257     $in_dir = $in_files[0];
 258     $in_dir =~ s/\/$//; # strips the trailing / if any
 259     @in_files = listfiles($in_dir, $type, $action);
 260 } else {
 261     for my $input (@in_files) {
 262     die "You cannot specify input files and directories at the same time.\n"
 263         unless -f $input;
 264     }
 265 }
 266
 267 # restores the string list from file
 268 $href = Locale::PO->load_file_ashash($str_file);
 269
 270 # guess the charsets. HTML::Templates defaults to iso-8859-1
 271 if (defined $href) {
 272     die "$str_file: PO file is corrupted, or not a PO file\n" unless defined $href->{'""'};
 273     $charset_out = TmplTokenizer::charset_canon $2 if $href->{'""'}->msgstr =~ /\bcharset=(["']?)([^;\s"'\\]+)\1/;
 274     $charset_in = $charset_out;
 275     warn "Charset in/out: ".$charset_out;
 276 #     for my $msgid (keys %$href) {
 277 #   if ($msgid =~ /\bcharset=(["']?)([^;\s"'\\]+)\1/) {
 278 #       my $candidate = TmplTokenizer::charset_canon $2;
 279 #       die "Conflicting charsets in msgid: $charset_in vs $candidate => $msgid\n"
 280 #           if defined $charset_in && $charset_in ne $candidate;
 281 #       $charset_in = $candidate;
 282 #   }
 283 #     }
 284
 285     # BUG6464: check consistency of PO messages
 286     #  - count number of '%s' in msgid and msgstr
 287     for my $msg ( values %$href ) {
 288         my $id_count  = split(/%s/, $msg->{msgid}) - 1;
 289         my $str_count = split(/%s/, $msg->{msgstr}) - 1;
 290         next if $id_count == $str_count ||
 291                 $msg->{msgstr} eq '""' ||
 292                 grep { /fuzzy/ } @{$msg->{_flags}};
 293         warn_normal
 294             "unconsistent %s count: ($id_count/$str_count):\n" .
 295             "  line:   " . $msg->{loaded_line_number} . "\n" .
 296             "  msgid:  " . $msg->{msgid} . "\n" .
 297             "  msgstr: " . $msg->{msgstr} . "\n", undef;
 298     }
 299 }
 300
 301 # set our charset in to UTF-8
 302 if (!defined $charset_in) {
 303     $charset_in = TmplTokenizer::charset_canon 'UTF-8';
 304     warn "Warning: Can't determine original templates' charset, defaulting to $charset_in\n";
 305 }
 306 # set our charset out to UTF-8
 307 if (!defined $charset_out) {
 308     $charset_out = TmplTokenizer::charset_canon 'UTF-8';
 309     warn "Warning: Charset Out defaulting to $charset_out\n";
 310 }
 311 my $xgettext = './xgettext.pl'; # actual text extractor script
 312 my $st;
 313
 314 if ($action eq 'create')  {
 315     # updates the list. As the list is empty, every entry will be added
 316     if (!-s $str_file) {
 317     warn "Removing empty file $str_file\n";
 318     unlink $str_file || die "$str_file: $!\n";
 319     }
 320     die "$str_file: Output file already exists\n" if -f $str_file;
 321     my($tmph1, $tmpfile1) = tmpnam();
 322     my($tmph2, $tmpfile2) = tmpnam();
 323     close $tmph2; # We just want a name
 324     # Generate the temporary file that acts as <MODULE>/POTFILES.in
 325     for my $input (@in_files) {
 326     print $tmph1 "$input\n";
 327     }
 328     close $tmph1;
 329     warn "I $charset_in O $charset_out";
 330     # Generate the specified po file ($str_file)
 331     $st = system ($xgettext, '-s', '-f', $tmpfile1, '-o', $tmpfile2,
 332             (defined $charset_in? ('-I', $charset_in): ()),
 333             (defined $charset_out? ('-O', $charset_out): ())
 334     );
 335     # Run msgmerge so that the pot file looks like a real pot file
 336     # We need to help msgmerge a bit by pre-creating a dummy po file that has
 337     # the headers and the "" msgid & msgstr. It will fill in the rest.
 338     if ($st == 0) {
 339     # Merge the temporary "pot file" with the specified po file ($str_file)
 340     # FIXME: msgmerge(1) is a Unix dependency
 341     # FIXME: need to check the return value
 342     unless (-f $str_file) {
 343         local(*INPUT, *OUTPUT);
 344         open(INPUT, "<$tmpfile2");
 345         open(OUTPUT, ">$str_file");
 346         while (<INPUT>) {
 347         print OUTPUT;
 348         last if /^\n/s;
 349         }
 350         close INPUT;
 351         close OUTPUT;
 352     }
 353     $st = system('msgmerge', '-U', '-s', $str_file, $tmpfile2);
 354     } else {
 355     error_normal "Text extraction failed: $xgettext: $!\n", undef;
 356     error_additional "Will not run msgmerge\n", undef;
 357     }
 358 #   unlink $tmpfile1 || warn_normal "$tmpfile1: unlink failed: $!\n", undef;
 359 #   unlink $tmpfile2 || warn_normal "$tmpfile2: unlink failed: $!\n", undef;
 360
 361 } elsif ($action eq 'update') {
 362     my($tmph1, $tmpfile1) = tmpnam();
 363     my($tmph2, $tmpfile2) = tmpnam();
 364     close $tmph2; # We just want a name
 365     # Generate the temporary file that acts as <MODULE>/POTFILES.in
 366     for my $input (@in_files) {
 367     print $tmph1 "$input\n";
 368     }
 369     close $tmph1;
 370     # Generate the temporary file that acts as <MODULE>/<LANG>.pot
 371     $st = system($xgettext, '-s', '-f', $tmpfile1, '-o', $tmpfile2,
 372         '--po-mode',
 373         (defined $charset_in? ('-I', $charset_in): ()),
 374         (defined $charset_out? ('-O', $charset_out): ()));
 375     if ($st == 0) {
 376     # Merge the temporary "pot file" with the specified po file ($str_file)
 377     # FIXME: msgmerge(1) is a Unix dependency
 378     # FIXME: need to check the return value
 379     $st = system('msgmerge', '-U', '-s', $str_file, $tmpfile2);
 380     } else {
 381     error_normal "Text extraction failed: $xgettext: $!\n", undef;
 382     error_additional "Will not run msgmerge\n", undef;
 383     }
 384 #   unlink $tmpfile1 || warn_normal "$tmpfile1: unlink failed: $!\n", undef;
 385 #   unlink $tmpfile2 || warn_normal "$tmpfile2: unlink failed: $!\n", undef;
 386
 387 } elsif ($action eq 'install') {
 388     if(!defined($out_dir)) {
 389     usage_error("You must specify an output directory when using the install method.");
 390     }
 391
 392     if ($in_dir eq $out_dir) {
 393     warn "You must specify a different input and output directory.\n";
 394     exit -1;
 395     }
 396
 397     # Make sure the output directory exists
 398     # (It will auto-create it, but for compatibility we should not)
 399     -d $out_dir || die "$out_dir: The directory does not exist\n";
 400
 401     # Try to open the file, because Locale::PO doesn't check :-/
 402     open(INPUT, "<$str_file") || die "$str_file: $!\n";
 403     close INPUT;
 404
 405     # creates the new tmpl file using the new translation
 406     for my $input (@in_files) {
 407         die "Assertion failed"
 408             unless substr($input, 0, length($in_dir) + 1) eq "$in_dir/";
 409 #       print "$input / $type\n";
 410         if (!defined $type || $input =~ /\.(?:$type)$/) {
 411             my $h = TmplTokenizer->new( $input );
 412             $h->set_allow_cformat( 1 );
 413             VerboseWarnings::set_input_file_name $input;
 414
 415             my $target = $out_dir . substr($input, length($in_dir));
 416             my $targetdir = $` if $target =~ /[^\/]+$/s;
 417             mkdir_recursive($targetdir) unless -d $targetdir;
 418             print STDERR "Creating $target...\n" unless $quiet;
 419             open( OUTPUT, ">$target" ) || die "$target: $!\n";
 420             text_replace( $h, *OUTPUT );
 421             close OUTPUT;
 422         } else {
 423         # just copying the file
 424             my $target = $out_dir . substr($input, length($in_dir));
 425             my $targetdir = $` if $target =~ /[^\/]+$/s;
 426             mkdir_recursive($targetdir) unless -d $targetdir;
 427             system("cp -f $input $target");
 428             print STDERR "Copying $input...\n" unless $quiet;
 429         }
 430     }
 431
 432 } else {
 433     usage_error('Unknown action specified.');
 434 }
 435
 436 if ($st == 0) {
 437     printf "The %s seems to be successful.\n", $action unless $quiet;
 438 } else {
 439     printf "%s FAILED.\n", "\u$action" unless $quiet;
 440 }
 441 exit 0;
 442
 443 ###############################################################################
 444
 445 =head1 SYNOPSIS
 446
 447 ./tmpl_process3.pl [ I<tmpl_process.pl options> ]
 448
 449 =head1 DESCRIPTION
 450
 451 This is an alternative version of the tmpl_process.pl script,
 452 using standard gettext-style PO files.  While there still might
 453 be changes made to the way it extracts strings, at this moment
 454 it should be stable enough for general use; it is already being
 455 used for the Chinese and Polish translations.
 456
 457 Currently, the create, update, and install actions have all been
 458 reimplemented and seem to work.
 459
 460 =head2 Features
 461
 462 =over
 463
 464 =item -
 465
 466 Translation files in standard Uniforum PO format.
 467 All standard tools including all gettext tools,
 468 plus PO file editors like kbabel(1) etc.
 469 can be used.
 470
 471 =item -
 472
 473 Minor changes in whitespace in source templates
 474 do not generally require strings to be re-translated.
 475
 476 =item -
 477
 478 Able to handle <TMPL_VAR> variables in the templates;
 479 <TMPL_VAR> variables are usually extracted in proper context,
 480 represented by a short %s placeholder.
 481
 482 =item -
 483
 484 Able to handle text input and radio button INPUT elements
 485 in the templates; these INPUT elements are also usually
 486 extracted in proper context,
 487 represented by a short %S or %p placeholder.
 488
 489 =item -
 490
 491 Automatic comments in the generated PO files to provide
 492 even more context (line numbers, and the names and types
 493 of the variables).
 494
 495 =item -
 496
 497 The %I<n>$s (or %I<n>$p, etc.) notation can be used
 498 for change the ordering of the variables,
 499 if such a reordering is required for correct translation.
 500
 501 =item -
 502
 503 If a particular <TMPL_VAR> should not appear in the
 504 translation, it can be suppressed with the %0.0s notation.
 505
 506 =item -
 507
 508 Using the PO format also means translators can add their
 509 own comments in the translation files, if necessary.
 510
 511 =item -
 512
 513 Create, update, and install actions are all based on the
 514 same scanner module. This ensures that update and install
 515 have the same idea of what is a translatable string;
 516 attribute names in tags, for example, will not be
 517 accidentally translated.
 518
 519 =back
 520
 521 =head1 NOTES
 522
 523 Anchors are represented by an <AI<n>> notation.
 524 The meaning of this non-standard notation might not be obvious.
 525
 526 The create action calls xgettext.pl to do the actual work;
 527 the update action calls xgettext.pl and msgmerge(1) to do the
 528 actual work.
 529
 530 =head1 BUGS
 531
 532 xgettext.pl must be present in the current directory; the
 533 msgmerge(1) command must also be present in the search path.
 534 The script currently does not check carefully whether these
 535 dependent commands are present.
 536
 537 Locale::PO(3) has a lot of bugs. It can neither parse nor
 538 generate GNU PO files properly; a couple of workarounds have
 539 been written in TmplTokenizer and more is likely to be needed
 540 (e.g., to get rid of the "Strange line" warning for #~).
 541
 542 This script may not work in Windows.
 543
 544 There are probably some other bugs too, since this has not been
 545 tested very much.
 546
 547 =head1 SEE ALSO
 548
 549 xgettext.pl,
 550 TmplTokenizer.pm,
 551 msgmerge(1),
 552 Locale::PO(3),
 553 translator_doc.txt
 554
 555 http://www.saas.nsw.edu.au/koha_wiki/index.php?page=DifficultTerms
 556
 557 =cut