source: gs2-extensions/open-office-src/trunk/perllib/plugins/OpenOfficeConverter.pm@ 22884

###########################################################################
#
# OpenOfficeConverter - helper plugin that does office document conversion 
#                       using jodconverter combined with OpenOffice
#
# A component of the Greenstone digital library software
# from the New Zealand Digital Library Project at the 
# University of Waikato, New Zealand.
#
# Copyright (C) 2010 New Zealand Digital Library Project
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
###########################################################################
package OpenOfficeConverter;

use ConvertBinaryFile;
use BaseMediaConverter;

use strict;
no strict 'refs'; # allow filehandles to be variables and viceversa

use gsprintf 'gsprintf';

# these two variables mustn't be initialised here or they will get stuck 
# at those values.
our $openoffice_conversion_available; 
our $no_openoffice_conversion_reason; 

BEGIN {
    @OpenOfficeConverter::ISA = ('BaseMediaConverter');

    # Check that OpenOffice and jodconverter are installed and available on 
    # the path 
    $openoffice_conversion_available = 1;
    $no_openoffice_conversion_reason = "";
    
    if (! defined $ENV{'GEXT_OPENOFFICE'}) {
    $openoffice_conversion_available = 0;
    $no_openoffice_conversion_reason = "gextopenofficenotinstalled";
    }
    else {
    my $gextoo_home = $ENV{'GEXT_OPENOFFICE'};
    my $jodjar = &util::filename_cat($gextoo_home,"lib","java","jodconverter.jar");

    if (!-e $jodjar) {
        print STDERR "Failed to find $jodjar\n";
        $openoffice_conversion_available = 0;
        $no_openoffice_conversion_reason = "gextjodconverternotinstalled";
    }
    else {
        # test to see if soffice in in path
        my $cmd = "soffice -headless 2>&1";


        if ($ENV{'GSDLOS'} =~ m/^windows$/) {
        my $ooffice_dir_guess =
            &util::filename_cat($ENV{'ProgramFiles'},"OpenOffice.org 3",
                    "program");
        if (-d  $ooffice_dir_guess) {
            &util::envvar_append("PATH",$ooffice_dir_guess);
        }
        $cmd .= " >nul";
        }
        else {
        # Windows seems to launch OpenOffice as a service (i.e.
        # automatically puts it in the background).  
        # For Unix putting it in the background needs to be done 
        # explicitly

        $cmd .= " >/dev/null &";
        }
        
        my $status = system($cmd);
        if ($status != 0) {
        print STDERR "Failed to run: $cmd\n";
        print STDERR "$!\n";
        $openoffice_conversion_available = 0;
        $no_openoffice_conversion_reason = "openofficenotinstalled";
        } 
    }
    }
}

my $arguments = [
    { 'name' => "openoffice_port",
      'desc' => "{OpenOfficeConverter.openoffice_port}",
      'type' => "int",
      'deft' => "8100",
      'range' => "81,",
      'reqd' => "no" },
    ];


my $options = { 'name' => "OpenOfficeConverter",
        'desc' => "{OpenOfficeConverter.desc}",
        'abstract' => "yes",
        'inherits' => "yes",
        'args' => $arguments };

sub new {
    my ($class) = shift (@_);
    my ($pluginlist,$inputargs,$hashArgOptLists,$auxilary) = @_;
    push(@$pluginlist, $class);

    push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
    push(@{$hashArgOptLists->{"OptList"}},$options);

    my $self = new BaseMediaConverter($pluginlist, $inputargs, 
                      $hashArgOptLists, $auxilary);

    if ($self->{'info_only'}) {
    # don't worry about any options etc
    return bless $self, $class;
    }
    if (!$openoffice_conversion_available) {
    $self->{'no_openoffice_conversion_reason'} = $no_openoffice_conversion_reason;

    my $outhandle = $self->{'outhandle'};
    &gsprintf($outhandle, "OpenOfficeConverter: {OpenOfficeConverter.noconversionavailable} ({OpenOfficeConverter.$no_openoffice_conversion_reason})\n");
    }  

    $self->{'openoffice_conversion_available'} = $openoffice_conversion_available;
    
    return bless $self, $class;

}

sub init {
    my $self = shift(@_);
    my ($verbosity, $outhandle, $failhandle) = @_;

    if ($openoffice_conversion_available) {
    my $oo_port = $self->{'openoffice_port'};

    my $launch_cmd = "soffice";
    $launch_cmd .= " \"-accept=socket,host=localhost,port=$oo_port;urp;StarOffice.ServiceManager\"";
    $launch_cmd .= " -headless";
    $self->{'openoffice_launch_cmd'} = $launch_cmd;
    }

    $self->{'ootmp_file_paths'} = ();
}

sub deinit {
    my $self = shift(@_);

    $self->clean_up_temporary_files();
}


sub convert {
    my $self = shift(@_);
    my $source_file_full_path = shift(@_);
    my $target_file_type      = shift(@_);
    my $convert_options       = shift(@_) || "";
    my $convert_id            = shift(@_) || "";
    my $cache_mode            = shift(@_) || "";

    return (0,undef,undef) unless $openoffice_conversion_available;
    # check the filename
    return (0,undef,undef) if ( !-f $source_file_full_path);

    my $outhandle = $self->{'outhandle'};
    my $verbosity = $self->{'verbosity'};

    my $source_file_no_path = &File::Basename::basename($source_file_full_path);
    # Determine the full name and path of the output file
    my $target_file_path;
    if ($self->{'enable_cache'}) {
    $self->init_cache_for_file($source_file_full_path);
    my $cache_dir = $self->{'cached_dir'};
    my $file_root = $self->{'cached_file_root'};
    $file_root .= "_$convert_id" if ($convert_id ne "");
    my $target_file = "$file_root.$target_file_type";
    $target_file_path = &util::filename_cat($cache_dir,$target_file);
    }
    else {
    $target_file_path = &util::get_timestamped_tmp_filename_in_collection($source_file_full_path, $target_file_type);
    push(@{$self->{'ootmp_file_paths'}}, $target_file_path);
    }

    # Generate and run the convert command

    my $gextoo_home = $ENV{'GEXT_OPENOFFICE'};
    my $jodjar = &util::filename_cat($gextoo_home,"lib","java","jodconverter.jar");

    my $convert_cmd = "java -jar \"$jodjar\"";
    $convert_cmd .= " \"$source_file_full_path\" \"$target_file_path\"";

    if ($verbosity>2) {
    print $outhandle "Convert command: $convert_cmd\n";
    }

    my $print_info = { 'message_prefix' => "OpenOffice Conversion",
               'message' => "Converting $source_file_no_path to: $target_file_type" };
    $print_info->{'cache_mode'} = $cache_mode if ($cache_mode ne "");

    my ($regenerated,$result,$had_error) 
    = $self->autorun_general_cmd($convert_cmd,$source_file_full_path, $target_file_path,$print_info);
    if ($had_error) {
    return (0, $result,$target_file_path);
    }
    return (1, $result,$target_file_path);
}


sub convert_without_result {
    my $self = shift(@_);

    my $source_file_path = shift(@_);
    my $target_file_type = shift(@_);
    my $convert_options  = shift(@_) || "";
    my $convert_id       = shift(@_) || "";

    return $self->convert($source_file_path,$target_file_type,
              $convert_options,$convert_id,"without_result");
}


sub tmp_area_convert_fileXX {
    my $self = shift (@_);
    my ($output_ext, $input_filename, $textref) = @_;
    
    my $outhandle = $self->{'outhandle'};
    my $convert_to = $self->{'convert_to'};
    my $failhandle = $self->{'failhandle'};
    my $convert_to_ext = $self->{'convert_to_ext'};
    
    # derive tmp filename from input filename
    my ($tailname, $dirname, $suffix)
    = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
}


sub clean_up_temporary_files {
    my $self = shift(@_);

    foreach my $ootmp_file_path (@{$self->{'ootmp_file_paths'}}) {
    if (-e $ootmp_file_path) {
        &util::rm($ootmp_file_path);
    }
    }

    $self->{'ootmp_file_paths'} = ();
}



1;