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#!/usr/bin/perl 
###################################################################################
#
#   Embperl - Copyright (c) 1997-2008 Gerald Richter / ecos gmbh  www.ecos.de
#   Embperl - Copyright (c) 2008-2014 Gerald Richter
#
#   You may distribute under the terms of either the GNU General Public
#   License or the Artistic License, as specified in the Perl README file.
#   For use with Apache httpd and mod_perl, see also Apache copyright.
#
#   THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
#   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
#   WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
#   $Id: embpmsgid.pl.templ 1578075 2014-03-16 14:01:14Z richter $
#
###################################################################################


BEGIN 
    {
    %Embperl::initparam = (use_env => 1, use_redirect_env => 1) ;
    $ENV{EMBPERL_SESSION_HANDLER_CLASS} = 'no' ;
    }	

use Embperl;
use Data::Dumper ;
use Getopt::Long ;


if (!@ARGV)
    {
    print qq{
Extract message ids from Embperl files

usage: $0 [options] [files]

options:
    --datadumper (-d) <file>    Use the given file to read and 
                                store message ids. Must be valid 
                                Perl code which defines $msgids
    --dbm (-b) <file>           Use the given file to read and
                                store message ids. Must be a dbm 
                                file.
    --languages (-l) <code>     Specify language code to generate
                                Can be given multiple times
} ;    
    exit (1) ;
    } ;


my $ret = GetOptions ("datadumper|d=s", "dbm|b=s", 'languages|l=s@') ; 

exit (1) if (!$ret) ;

if ($opt_datadumper && -f $opt_datadumper)
    {
    $msgids = do $opt_datadumper ;
    die $@ if ($@) ;

    if (!ref $msgid eq 'HASH')
        {
        print SDTERR "File $opt_datadumper doesn't defines a hashref of message ids\n" ;
        exit (1) ;
        }

    }
elsif ($opt_dbm)
    {
    tie %msghash,  'DB_File', $opt_dbm, O_CREAT|O_RDWR or die "Cannot open $opt_dbm ($!)" ;
    
    $msgids = \%msghash ;
    }

if (keys %$msgids)
    {
    print "Found languages: " ;
    foreach (sort keys %$msgids)
        {
        print $_, ' ' ;
        }
    print "\n" ;
    }

if (@opt_languages)
    {
    print "Add languages: " ;
    foreach (sort @opt_languages)
        {
        print $_, ' ' ;
        $msgids -> {$_} ||= {} ;
        }
    print "\n" ;
    }
elsif (!keys %$msgids)
    {
    $msgids -> {'en'} = {} ;
    }


foreach my $fn (@ARGV)
    {
    my $out ;
    my @errors ;
    Embperl::Execute ({use_env => 1, use_redirect_env => 1, syntax => 'MsgIdExtract', 
                inputfile => $fn, 
                output => \$out,
                errors => \@errors}) ;
    if (@errors)
        {
        print join ("\n", @errors) ;
        last ;
        }
    }


$Data::Dumper::Sortkeys  = \&{ sub {[ sort { $a cmp $b } keys %{$_[0]} ]} } ;

print Data::Dumper -> Dump ([\%Embperl::Syntax::MsgIdExtract::Ids], ['msgids']) ;

if ($opt_datadumper || $opt_dbm)
    {
    if (keys %$msgids)
        {
        foreach my $lang (sort keys %$msgids)
            {
            foreach my $k (keys %Embperl::Syntax::MsgIdExtract::Ids)
                {
                $msgids -> {$lang}{$k} = '' if (!exists $msgids -> {$lang}{$k}) ;
                }
            }
        }

    if ($opt_datadumper)
        {
        rename $opt_datadumper, "$opt_datadumper.bak" ;
        open FH, ">$opt_datadumper" or die "Cannot open $opt_datadumper ($!)" ;
        $Data::Dumper::Indent = 1 ;
        #$Data::Dumper::Useqq  = 1 ;
        print FH Data::Dumper -> Dump  ([$msgids], ['msgids']) ;
        close FH ;
        }
    }


__END__
 
=head1 NAME
 
embpmsgid.pl - Extract message ids from Embperl files
 
=head1 SYNOPSIS
 
embpmsgid.pl [I<options>] [I<files>]
 
=head1 DESCRIPTION

Extract message ids (C<[= ... =]> blocks) from Embperl files given on 
command line.

=head1 OPTIONS

=over 4

=item B<--datadumper>=I<file>, B<-d>

Use the given file to read and store message ids. Must be valid Perl 
code which defines $msgids.

=item B<--dbm>=I<file>, B<-b>

Use the given file to read and store message ids. Must be a dbm file.

=item B<--languages>=I<code>, B<-l>

Specify language code to generate. Can be given multiple times.

=back

=head1 SEE ALSO

L<Embperl>

=head1 AUTHOR

G. Richter (richter at embperl dot org)