source: trunk/third/xml-i18n-tools/xml-i18n-merge.in @ 15545

#!@PERL@ -w

#
#  The XML Translation Merge Tool
#
#  Copyright (C) 2000 Free Software Foundation.
#  Copyright (C) 2000 Eazel, Inc
#
#  This library is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of the
#  License, or (at your option) any later version.
#
#  This script is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#  General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this library; if not, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#  Authors:  Maciej Stachowiak <mjs@eazel.com>
#            Kenneth Christiansen <kenneth@gnu.org>
#


## Release information
my $PROGRAM      = "xml-i18n-merge";
my $PACKAGE      = "@PACKAGE@";
my $VERSION      = "@VERSION@";

## Script options - Enable by setting value to 1
my $ENABLE_OAF   = "1";

## Loaded modules
use strict; 
use File::Basename;
use Getopt::Long;

## Scalars used by the option stuff
my $HELP_ARG    = "0";
my $VERSION_ARG = "0";
my $OAF_STYLE_ARG = "0";
my $KEYS_STYLE_ARG = "0";
my $DESKTOP_STYLE_ARG = "0";


## Handle options
GetOptions (
            "help|h|?"   => \$HELP_ARG,
            "version|v"  => \$VERSION_ARG,
            "oaf-style|o" => \$OAF_STYLE_ARG,
            "keys-style|k" => \$KEYS_STYLE_ARG,
            "desktop-style|d" => \$DESKTOP_STYLE_ARG
            ) or &error;


my $PO_DIR;
my $FILE;
my $OUTFILE;

my @languages;
my %po_files_by_lang = ();
my %translations = ();

&split_on_argument;


## Check for options. 
## This section will check for the different options.

sub split_on_argument {

    if ($VERSION_ARG) {
        &version;

    } elsif ($HELP_ARG) {
        &help;
    } elsif ($OAF_STYLE_ARG && @ARGV > 2) {
        &place_normal;
        &message;
        &preparation;
        &oaf_merge_translations;
    } elsif ($KEYS_STYLE_ARG && @ARGV > 2) {
        &place_normal;
        &message;
        &preparation;
        &keys_merge_translations;
    } elsif ($DESKTOP_STYLE_ARG && @ARGV > 2) {
        &place_normal;
        &message;
        &preparation;
        &desktop_merge_translations;
    } else {
        &help;
    }  
}    


sub place_normal {
    $PO_DIR = $ARGV[0];
    $FILE = $ARGV[1];
    $OUTFILE = $ARGV[2];
}   


## Sub for printing release information
sub version{
    print "${PROGRAM} (${PACKAGE} ${VERSION}\n";
    print "Written by Maciej Stachowiak and Kenneth Christiansen, 2000.\n\n";
    print "Copyright (C) 2000 Free Software Foundation, Inc.\n";
    print "Copyright (C) 2000, 2001 Eazel, Inc.\n";
    print "This is free software; see the source for copying conditions.  There is NO\n";
    print "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
    exit;
}

## Sub for printing usage information
sub help{
    print "Usage: xml-i18n-merge [OPTIONS] PO_DIRECTORY FILENAME OUTPUT_FILE\n";
    print "Generates an xml file that includes translated versions of some attributes,\n";
    print "from an untranslated source and a po directory that includes translations.\n";
    print "  -V, --version                shows the version\n";
    print "  -H, --help                   shows this help page\n";
    print "  -o, --oaf-style              includes translations in the oaf style\n";
    print "  -k, --keys-style             includes translations in the keys style\n";
    print "  -d, --desktop-style          includes translations in the desktop style\n";
    print "\nReport bugs to <mjs\@eazel.com>.\n";
    exit;
}


## Sub for printing error messages
sub error{
#   print "xml-i18n-merge: invalid option @ARGV\n";
    print "Try `xml-i18n-merge --help' for more information.\n";
    exit;
}


sub message {
    print "Merging translations into $OUTFILE.\n";
}



sub preparation {
   &gather_po_files;
   &create_translation_database;   
}



# General-purpose code for looking up translations in .po files

sub gather_po_files
{
    my @po_files = glob("${PO_DIR}/*.po");

    @languages = map (&po_file2lang, @po_files);

    foreach my $lang (@languages) {
        $po_files_by_lang{$lang} = shift (@po_files);
    }
}

sub po_file2lang 
{ 
    my $tmp = $_; 
    $tmp =~ s/^.*\/(.*)\.po$/$1/; 
    return $tmp; 
}


sub create_translation_database
{
    foreach my $lang (@languages) {

        my $po_file = $po_files_by_lang{$lang};

        open PO_FILE, "<$po_file";      

        while (<PO_FILE>) {
            if (/^#,.*fuzzy/) {
                $_ = <PO_FILE>; next;
            }
            if (/^msgid "(.*)"/ ) {
                my $msgid = $1;
                $_ = <PO_FILE>;
                
                if (/^msgstr "(.+)"/) {
                    my $msgstr = $1;
                    $translations{$lang . "|" . $msgid} = $msgstr; 
                    # print "[$lang]$msgstr\n";
                }
            }            
        }
    }
}

sub lookup_translations 
{
    my ($value) = @_;
 
    my %transmap = ();

    foreach my $lang (@languages) {
        my $translation = lookup_translation ($value, $lang);
            
        if ($translation) {
            $transmap{$lang} = $translation;
        }
    }

    return %transmap;
}


sub lookup_translation
{
    my ($string, $lang) = @_;
    $string =~ s/\+/\\+/g;
  
    my $salt = "$lang|$string";
      
    if ($translations{$salt}) {
        return $translations{$salt};
    }
  
    return "";
}


sub entity_encode_translations
{
    my %transmap = @_;

    foreach my $key (keys %transmap) {
        $transmap{$key} = entity_encode ($transmap{$key});
    }

    return %transmap;
}


sub entity_encode
{
    my ($pre_encoded) = @_;

    my @list_of_chars = unpack ('C*', $pre_encoded);

    return join ('', map (&entity_encode_int, @list_of_chars));
}

sub entity_encode_int
{
    # FIXME: should probably entity encode more stuff.
    if ($_ > 127) {
        return "&#" . $_ . ";";
    } else {
        return chr $_;
    }
}





## OAF-specific merge code
 
sub oaf_merge_translations
{
    my $oaf_source; {
       local (*INPUT);
       local $/; # slurp mode
       open (INPUT, "<${FILE}") || die "can't open ${FILE}: $!";
       $oaf_source = <INPUT>;
    }

    open OUTPUT, ">${OUTFILE}";

    while ($oaf_source =~ /^(.*<oaf_attribute[^<]*_value=\"[^\"]*\"[^<]*>)$/mg)  {
        my $orig_node = $1;
        
        my $non_translated_line = $orig_node;
        $non_translated_line =~ s/_value=\"/value=\"/;
            
        my $new_node="${non_translated_line}\n";
            
        my $value_str = $orig_node;
        $value_str =~ s/.*_value=\"([^\"]*)\".*/$1/sg;
            
        if ($value_str) {
            my %value_translation_map = entity_encode_translations
                (lookup_translations ($value_str));

            foreach my $key (keys %value_translation_map) {
                my $translation = $value_translation_map{$key};
                    
                my $translated_line = $orig_node;
                $translated_line =~ s/name=\"([^\"]*)\"/name=\"$1-${key}\"/g;
                $translated_line =~ s/_value=\"[^\"]*\"/value=\"${translation}\"/g;
                $new_node="$new_node${translated_line}\n";
            }
        }

        $oaf_source =~ s/$orig_node/$new_node/;
    }           

    print OUTPUT $oaf_source;    

    close OUTPUT;
    close INPUT;
}

sub keys_merge_translations
{       
    open INPUT, "<${FILE}";

    open OUTPUT, ">${OUTFILE}";

    while (<INPUT>) {
        chomp;
        if (/^\s*_.*=.*/)  {
            my $orig_line = $_;
    
            my $non_translated_line = $orig_line;
            $non_translated_line =~ s/_(.*)=/$1=/;
            
            print OUTPUT "${non_translated_line}\n";
            
            my $value_str = $orig_line;
            $value_str =~ s/.*_.*=(.*)/$1/;
            
            if ($value_str) {
                my %value_translation_map = lookup_translations ($value_str);
            
                foreach my $key (keys %value_translation_map) {
                    my $translation = $value_translation_map{$key};

                    my $translated_line = $orig_line;  
                    $translated_line =~ s/_(.*)=([^\n]*)/\[$key]$1=$translation/;
                    print OUTPUT "$translated_line\n";
                }
            }
        } else {
            print OUTPUT "$_\n";
        }
    }
                 
    close OUTPUT;
    close INPUT;
}

sub desktop_merge_translations
{
    open INPUT, "<${FILE}";

    open OUTPUT, ">${OUTFILE}";

    while (<INPUT>) {
        chomp;
        if (/^\s*_.*=.*/)  {
            my $orig_line = $_;

            my $non_translated_line = $orig_line;
            $non_translated_line =~ s/_(.*)=/$1=/;

            print OUTPUT "${non_translated_line}\n";

            my $value_str = $orig_line;
            $value_str =~ s/.*_.*=(.*)/$1/;

            if ($value_str) {
                my %value_translation_map = lookup_translations ($value_str);

                foreach my $key (keys %value_translation_map) {
                    my $translation = $value_translation_map{$key};

                    my $translated_line = $orig_line;
                    $translated_line =~ s/^_(.*)=([^\n]*)/$1\[$key]=$translation/;
                    print OUTPUT "$translated_line\n";
                }
            }
        } else {
            print OUTPUT "$_\n";
        }
    }

    close OUTPUT;
    close INPUT;

}