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#!/usr/bin/perl
##!~_~perlpath~_~
#
# Interchange localizer
#
# $Id: localize.PL,v 2.11 2007-08-09 13:40:57 pajamian Exp $
#
# Copyright (C) 2002-2007 Interchange Development Group
# Copyright (C) 1996-2002 Red Hat, Inc.
#
# This program 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 program 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 program; if not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301 USA.

use lib '/usr/local/interchange/lib';
#use lib '~_~INSTALLPRIVLIB~_~';
use lib '/usr/local/interchange';
#use lib '~_~INSTALLARCHLIB~_~';

use strict;
use Vend::Util qw(readfile escape_chars);
require Vend::Config;
use Getopt::Std;
use vars qw($opt_c $opt_d $opt_l $opt_M $opt_m $opt_n $opt_o $opt_s $opt_t $opt_u);

BEGIN {
($Global::VendRoot = $ENV{MINIVEND_ROOT})
if defined $ENV{MINIVEND_ROOT};

$Global::VendRoot = $Global::VendRoot || '/usr/local/interchange';
# $Global::VendRoot = $Global::VendRoot || '~_~INSTALLARCHLIB~_~';
$Global::ErrorFile = "$Global::VendRoot/error.log";
$ENV{MINIVEND_STORABLE} = 1
if -f "$Global::VendRoot/_session_storable";
$ENV{MINIVEND_STORABLE_DB} = 1
if -f "$Global::VendRoot/_db_storable";
}

### END CONFIGURATION VARIABLES

my $USAGE = <<EOF;
$0 -- produce localization file from set of pages

usage: localize -l lg_CC [-d lg_CC|-s] [-m file|-t] [-u dir] file [file2 file3 ...]

OPTIONS

-c Rewrite [L] sections with [LC]text[do_DO]text[/do_dO],
adjust file and data -- mutually exclusive with -o
-d lg_CC Create default domain file with Locale lg_CC as prefix
-l lg_CC Create file with Locale lg_CC as prefix
-m <file> Read existing information to merge from <file>
-n Don't write comments
-M When in -c mode, prefix MM_ to make minimate_compatible;
when in regular mode, strip MM_ from [LC] defs
-o Rewrite [L] sections with [L msgNNNN], adjust file and data
-- mutually exclusive with -c
-s Suppress default locale.
-t Two page mode, mutually exclusive with -m
-u <dir> UI directory, e.g. /usr/lib/interchange/lib/UI. This can
be used to include the menu titles in the output.
lg_CC refers to the POSIX norm of specifying two-letter
language and country codes to refer to a locale.
Two-page mode requires two files (one for each language) to compare and
merge into one locale definition.

The merge file for the -m option should use the Perl reference form --
see the Interchange documentation for more information.

If [L msg_key]default text[/L] keys are found, will produce a comment
with the default text for reference.

A backup file (filename.html.bak) is saved if -o is used, but only
one level. Subsequent .bak files will be overwritten.

EOF

getopts('cd:l:Mm:nostu:') or die "$USAGE\n";

die "$USAGE\n" if $@;
die "$USAGE\n" unless $opt_l;
die "$USAGE\n" if $opt_d && $opt_l eq $opt_d;

my $def = $opt_d || 'default';

my $Mpre = '';
if($opt_M) {
$Mpre = 'MM_';
}

my $Uneval;

if($Data::Dumper::Version) {
$Uneval = \&Data::Dumper::Dumper;
$Data::Dumper::Useqq = 1;
}
else {
$Uneval = \&Vend::Util::uneval_it;
}

my $C = {};

Vend::Config::setcat($C);

if(! $opt_m) {
# do nothing
}
elsif ( open(CONFIG, "< $opt_m") ) {
my $value;
while (<CONFIG>) {
chomp;
next unless s/^\s*locale\s+//i;
$value = $_;
        if ($value =~ /^(.*)<<(\w+)\s*/) { # "here" value
            my $begin = $1 || '';
            $begin .= "\n" if $begin;
            my $mark = $2;
            my $startline = $.;
            $value = $begin . Vend::Config::read_here(\*CONFIG, $mark);
            unless (defined $value) {
                die (sprintf('%d: %s', $startline,
                    qq#no end marker ("$mark") found#));
            }
        }
Vend::Config::parse_locale('Locale', $value);
}
}
else {
warn "Couldn't read merge file $opt_m, continuing without.\n";
}

$C->{Locale_repository} = {} unless $C->{Locale_repository};

my $Locale = $C->{Locale_repository};
my $one_text;
my $two_text;
my $one;
my $two;

if($opt_u) {
# parse menu files like Commerce.txt
    for (glob ("$opt_u/*.txt")) {
parse_menufile ($_);
}
}

if($opt_t) {
$one = shift;
$two = shift || die "$USAGE\n";
my @one;
my @two;
my @comment;

$one_text = readfile($one) or die "file $one not present or empty.\n";
$two_text = readfile($two) or die "file $two not present or empty.\n";

while ($one_text =~ m:\[L(\s+[\w+]\s*)?\](.*?)\[/L\]:) {
if($1) {
push (@one, $1);
push (@comment, $2);
}
else {
push (@one, $2);
push (@comment, '');
}
}
$two_text =~ s:\[L\](.*?)\[/L\]:push (@two, $1):eg;

print "Locale $opt_l <<EOF\n";
print "{\n";
my $i;
for($i = 0; $i < @one; $i++) {
print "'";
$one[$i] =~ s/'/\\'/g;
print $one[$i];
print "',\n";
if ($comment[$i]) {
$comment[$i] =~ s/\n/\n# /g;
print "# $comment[$i]\n";
}
print "'";
$two[$i] =~ s/'/\\'/g;
print $two[$i];
print "',\n\n";
}
print "\n}\nEOF\n";
exit;
}

my %Comment;
my $Key = 'msg0001';

sub getkey {
$Key++ until ! defined $Locale->{$def}->{$Key};
return $Key;
}

sub parse_menufile {
my ($file) = @_;
my ($headline, @cols, $namecol, $dsccol);

open (ICMENU, $file)
|| die "Couldn't read UI menu file $file: $!\n";
$headline = <ICMENU>;
@cols = split (/\t/, $headline);

for (my $i = 0; $i < @cols; $i++) {
if ($cols[$i] eq 'name') {
$namecol = $i;
} elsif ($cols[$i] eq 'description') {
$dsccol = $i;
}
}

unless ($namecol) {
die "Malformed UI menu file $file: name column not found\n";
}
unless ($dsccol) {
die "Malformed UI menu file $file: description column not found\n";
}
while (<ICMENU>) {
@cols = split (/\t/);
write_structure (undef, $cols[$namecol]) if $cols[$namecol];
write_structure (undef, $cols[$dsccol]) if $cols[$dsccol];
}
close (ICMENU);
}

sub write_structure {
my($key, $default) = @_;

if($key) {
$Locale->{$def}->{$key} = $default;
$Comment{$key} = $default;
$Comment{$key} =~ s/\n/\n# /g;
}
else {
$Locale->{$def}->{$default} = $default;
}
}

sub substitute_lc {
my($default) = @_;
my $loc = {};
while($default =~ s:\s*\[(\w+)\]\s*(.*)\[/\1\]::s) {
my $l = $1;
my $val = $2;
$val =~ s/\s+$//;
$l =~ s/^MM_// if $opt_M;
$loc->{$l} = $val;
}
$default =~ s/^\s+//;
$default =~ s/\s+$//;
for(keys %$loc) {
$Locale->{$_}->{$default} = $loc->{$_};
$Comment{$default} = $default;
$Comment{$default} =~ s/\n/\n# /g;
}
$Locale->{$def}->{$default} = $default;
my $out = "$default\n";
for(keys %$Locale) {
next unless defined $Locale->{$_}{$default};
next if $_ eq 'default';
$out .= "[$Mpre$_]" . $Locale->{$_}{$default} . "[/$Mpre$_]\n";
}
return $out;
}

my $data;
my $key;
my $file;

foreach $file (@ARGV) {
unless ($data = readfile($file)) {
warn "file $file non-existent or empty, skipping.\n";
next;
}

if($opt_c) {
rename($file, "$file.bak") or die "Couldn't rename $file: $!\n";
$data =~ s!\[L(?:\s+\w+\s*)?\](.*?)\[/L\]!
'[LC]' . substitute_lc($1) . '[/LC]'!ge
}
elsif($opt_o) {
rename($file, "$file.bak") or die "Couldn't rename $file: $!\n";
while ($data =~ s:\[L\](.*?)(\[/L\]):
'[L ' . ($key = getkey()) . ']' . $1. $2:e) {
write_structure($key, $1);
}
}
if(! $opt_c) {
while ($data =~ m:\[L(\s+(\w+)\s*)?\](.*?)\[/L\]:sg) {
write_structure($2 || undef, $3);
}
while ($data =~ m!\[LC\](.*?)\[/LC\]!gs) {
print STDERR ".";
substitute_lc($1);
}
        while ($data =~ m:\[loc\](\s*[^\[].*?[^\]]\s*)\[/loc\]:gsi) {
write_structure(undef, $1);
}
        while ($data =~ m:\[msg(\s+arg\.\d+=(["`]).*?\2)*\s*\](\s*[^\[].*?[^\]]\s*)\[/msg\]:gsi) {
write_structure(undef, $3);
}
}

if($opt_c || $opt_o) {
Vend::Util::writefile($file, $data);
}
}

my $loc_text = "Locale $opt_l <<EOF\n{\n";
my $def_text = "Locale $def <<EOF\n{\n";

my $d = $Locale->{$def};
my $l = $Locale->{$opt_l};

my($text, $dat, $cmt);

foreach $key (sort keys %$d) {
$dat = ($Comment{$key} || '') and
$dat =~ s/\n/\n# /g;

if ($dat) {
if ($opt_s) {
$loc_text .= "# $dat\n";
} else {
$def_text .= "# $dat\n";
}
}

        unless ($opt_n) {
if ($dat) {
$cmt = $dat;
}
else {
$cmt = $key;
$cmt =~ s/\n/\n# /g;
}
$loc_text .= "# $cmt\n";
        }

$text = &$Uneval($key);
$loc_text .= "$text,\n";
#$loc_text .= &$Uneval ($l->{$key} || '');
# Change to put undef on length 0
$loc_text .= (defined $l->{$key} && length($l->{$key}))
? $Uneval->($l->{$key})
: 'undef';
$loc_text .= ",\n\n";

next if $opt_s;
next unless $Comment{$key};
$def_text .= "$text,\n";
$def_text .= &$Uneval($Comment{$key});
$def_text .= ",\n\n";


}

$def_text .= "\n}\nEOF\n";
$loc_text .= "\n}\nEOF\n\n";

print $loc_text;
print $def_text;

=head1 NAME

localize -- produce Interchange localization file from set of pages

=head1 VERSION

# $Id: localize.PL,v 2.11 2007-08-09 13:40:57 pajamian Exp $

=head1 SYNOPSIS

C<localize -l lg_CC [-d lg_CC] [-m file|-t] file [file2 file3 ...]>

=head1 DESCRIPTION

Helps manage Interchange pages by finding, adding, and merging localization strings.

=head1 OPTIONS

=over 4

=item C<-c>

Rewrite [L] sections with [LC]text[do_DO]text[/do_dO], adjust file and
data -- mutually exclusive with C<-o>.

=item C<-d lg_CC>

Create default domain file with Locale lg_CC as prefix

=item C<-l lg_CC>

Create file with Locale lg_CC as prefix. This is mandatory unless in
-c mode with C<-m> option.

=item C<-m file>

Read existing information to merge from <file>. Can contain multiple locales.

=item C<-M>

When in C<-c> mode, prefix MM_ to make minimate_compatible;
when in regular mode, strip MM_ from [LC] defs

=item C<-n>

Don't write comments in the output.

=item C<-o>

Rewrite [L] sections with [L msgNNNN], adjust file and data.
Mutually exclusive with C<-c>.

=item C<-t>

Two page mode, mutually exclusive with C<-m.>

=item C<-u dir>

Directory with (UI) menu database files, e.g.
C</usr/lib/interchange/lib/UI/pages/includes/menus>. This can
be used to include the menu titles in the output.

=back

lg_CC refers to the POSIX norm of specifying two-letter
language and country codes to refer to a locale.
Two-page mode requires two files (one for each language) to compare and
merge into one locale definition.

The merge file for the C<-m> option should use the Perl reference form --
see the Interchange documentation for more information.

If [L msg_key]default text[/L] keys are found, will produce a comment
with the default text for reference.

A backup file (filename.html.bak) is saved if C<-o> is used, but only
one level. Subsequent .bak files will be overwritten.

=head1 SEE ALSO

http://www.icdevgroup.org/

=head1 AUTHOR

Mike Heins and Stefan Hornburg

=cut
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