root/luci/trunk/build/i18n-lua2po.pl @ 6748

#!/usr/bin/perl

@ARGV >= 2 || die "Usage: $0 <source-dir> <dest-dir> [<target-language>]\n";

my $source_dir  = shift @ARGV;
my $target_dir  = shift @ARGV;
my $target_lang = shift @ARGV;
my $master_lang = "en";


if( ! -d "$target_dir/" . ( $target_lang || 'templates' ) )
{
    system('mkdir', '-p', "$target_dir/" . ( $target_lang || 'templates' ));
}


my %target_strings;

if( $target_lang && open F, "find $source_dir -path '*/luasrc/i18n/*' -name '*.$target_lang.lua' |" )
{
    while( chomp( my $file = readline F ) )
    {
        if( open L, "< $file" )
        {
            my ( $basename ) = $file =~ m{.+/([^/]+)\.[\w\-]+\.lua$};
            $target_strings{$basename} = { };

            while( chomp( my $entry = readline L ) )
            {
                my ( $k, $v );
                if( $entry =~ /^\s*(\w+)\s*=\s*\[\[(.+)\]\]/ )
                {
                    ( $k, $v ) = ( $1, $2 );
                }
                elsif( $entry =~ /^\s*(\w+)\s*=\s*'(.+)'/ )
                {
                    ( $k, $v ) = ( $1, $2 );
                }
                elsif( $entry =~ /^\s*(\w+)\s*=\s*"(.+)"/ )
                {
                    ( $k, $v ) = ( $1, $2 );
                }
                
                if( $k && $v )
                {
                    $v =~ s/"/\\"/g;
                    $v =~ s/\\\\"/\\"/g;
                    $target_strings{$basename}{$k} = $v;
                }
            }

            close L;
        }
    }

    close F;
}


if( open F, "find . -path '*/luasrc/i18n/*' -name '*.$master_lang.lua' |" )
{
    my $destfile = sprintf '%s/%s/%%s.%s',
        $target_dir,
        $target_lang || 'templates',
        $target_lang ? 'po' : 'pot'
    ;

    while( chomp( my $file = readline F ) )
    {
        if( open L, "< $file" )
        {
            my ( $basename ) = $file =~ m{.+/([^/]+)\.\w+\.lua$};
            my $filename = sprintf $destfile, $basename;

            if( open T, "> $filename" )
            {
                printf "Generating %-40s ", $filename;

                printf T "#  %s.%s\n#  generated from %s\n\nmsgid \"\"\n" .
                         "msgstr \"Content-Type: text/plain; charset=UTF-8\"\n\n",
                    $basename, $target_lang ? 'po' : 'pot', $file;
        
                while( chomp( my $entry = readline L ) )
                {
                    my ( $k, $v );
                    if( $entry =~ /^\s*(\w+)\s*=\s*\[\[(.+)\]\]/ )
                    {
                        ( $k, $v ) = ( $1, $2 );
                    }
                    elsif( $entry =~ /^\s*(\w+)\s*=\s*'(.+)'/ )
                    {
                        ( $k, $v ) = ( $1, $2 );
                    }
                    elsif( $entry =~ /^\s*(\w+)\s*=\s*"(.+)"/ )
                    {
                        ( $k, $v ) = ( $1, $2 );
                    }
                
                    if( $k && $v )
                    {
                        $v =~ s/"/\\"/g;
                        $v =~ s/\\\\"/\\"/g;
                        printf T "#: %s:%d\n#. %s\nmsgid \"%s\"\nmsgstr \"%s\"\n\n",
                            $file, $., $v, $k,
                            ( $target_strings{$basename} && $target_strings{$basename}{$k} )
                                ? $target_strings{$basename}{$k} : "";
                    }
                }
                
                close T;
                
                print "done\n";
            }

            close L;
        }
    }

    close F;
}