| 1 | ###########################################################################
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| 2 | #
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| 3 | # PowerPointPlugin.pm -- plugin for importing Microsoft PowerPoint files.
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| 4 | # (basic version supports versions 95 and 97)
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| 5 | # (through OpenOffice extension, supports all contemporary formats)
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| 6 | #
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| 7 | # A component of the Greenstone digital library software
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| 8 | # from the New Zealand Digital Library Project at the
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| 9 | # University of Waikato, New Zealand.
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| 10 | #
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| 11 | # Copyright (C) 2002 New Zealand Digital Library Project
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| 12 | #
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| 13 | # This program is free software; you can redistribute it and/or modify
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| 14 | # it under the terms of the GNU General Public License as published by
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| 15 | # the Free Software Foundation; either version 2 of the License, or
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| 16 | # (at your option) any later version.
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| 17 | #
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| 18 | # This program is distributed in the hope that it will be useful,
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| 19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 21 | # GNU General Public License for more details.
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| 22 | #
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| 23 | # You should have received a copy of the GNU General Public License
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| 24 | # along with this program; if not, write to the Free Software
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| 25 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 26 | #
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| 27 | ###########################################################################
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| 28 |
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| 29 | package PowerPointPlugin;
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| 30 |
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| 31 | use strict;
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| 32 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 33 | no strict 'subs';
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| 34 |
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| 35 | use gsprintf 'gsprintf';
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| 36 |
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| 37 | use AutoLoadConverters;
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| 38 | use ConvertBinaryFile;
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| 39 |
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| 40 | sub BEGIN {
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| 41 | @PowerPointPlugin::ISA = ('ConvertBinaryFile', 'AutoLoadConverters');
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| 42 | }
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| 43 |
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| 44 | my $openoffice_available = 0;
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| 45 |
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| 46 | my $windows_convert_to_list =
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| 47 | [ { 'name' => "auto",
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| 48 | 'desc' => "{ConvertBinaryFile.convert_to.auto}" },
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| 49 | { 'name' => "html",
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| 50 | 'desc' => "{ConvertBinaryFile.convert_to.html}" },
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| 51 | { 'name' => "text",
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| 52 | 'desc' => "{ConvertBinaryFile.convert_to.text}" },
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| 53 | { 'name' => "pagedimg_jpg",
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| 54 | 'desc' => "{PowerPointPlugin.convert_to.pagedimg_jpg}" },
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| 55 | { 'name' => "pagedimg_gif",
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| 56 | 'desc' => "{PowerPointPlugin.convert_to.pagedimg_gif}" },
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| 57 | { 'name' => "pagedimg_png",
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| 58 | 'desc' => "{PowerPointPlugin.convert_to.pagedimg_png}" }
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| 59 | ];
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| 60 |
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| 61 | my $openoffice_convert_to_list =
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| 62 | [ { 'name' => "auto",
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| 63 | 'desc' => "{ConvertBinaryFile.convert_to.auto}" },
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| 64 | { 'name' => "html_multi",
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| 65 | 'desc' => "{PowerPointPlugin.convert_to.html_multi}" },
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| 66 | { 'name' => "text",
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| 67 | 'desc' => "{ConvertBinaryFile.convert_to.text}" },
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| 68 | { 'name' => "pagedimg",
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| 69 | 'desc' => "{PowerPointPlugin.convert_to.pagedimg}" }
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| 70 | ];
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| 71 |
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| 72 | my $openoffice_extra_convert_to_list =
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| 73 | [ { 'name' => "html_multi",
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| 74 | 'desc' => "{PowerPointPlugin.convert_to.html_multi}" },
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| 75 | { 'name' => "pagedimg",
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| 76 | 'desc' => "{PowerPointPlugin.convert_to.pagedimg}" }
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| 77 | ];
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| 78 |
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| 79 | my $arguments =
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| 80 | [ { 'name' => "process_exp",
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| 81 | 'desc' => "{BasePlugin.process_exp}",
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| 82 | 'type' => "regexp",
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| 83 | 'reqd' => "no",
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| 84 | 'deft' => "&get_default_process_exp()", # delayed (see below)
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| 85 | }
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| 86 | ];
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| 87 |
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| 88 | my $opt_windows_args =
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| 89 | [ { 'name' => "convert_to",
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| 90 | 'desc' => "{ConvertBinaryFile.convert_to}",
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| 91 | 'type' => "enum",
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| 92 | 'reqd' => "yes",
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| 93 | 'list' => $windows_convert_to_list,
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| 94 | 'deft' => "html" },
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| 95 | { 'name' => "windows_scripting",
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| 96 | 'desc' => "{PowerPointPlugin.windows_scripting}",
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| 97 | 'type' => "flag",
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| 98 | 'reqd' => "no" }
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| 99 | ];
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| 100 |
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| 101 | my $opt_office_args =
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| 102 | [ { 'name' => "convert_to",
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| 103 | 'desc' => "{ConvertBinaryFile.convert_to}",
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| 104 | 'type' => "enum",
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| 105 | 'reqd' => "yes",
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| 106 | 'list' => $openoffice_convert_to_list,
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| 107 | 'deft' => "html" }
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| 108 | ];
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| 109 |
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| 110 | my $options = { 'name' => "PowerPointPlugin",
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| 111 | 'desc' => "{PowerPointPlugin.desc}",
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| 112 | 'abstract' => "no",
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| 113 | 'inherits' => "yes",
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| 114 | 'srcreplaceable' => "yes", # Source docs in PPT format can be replaced with GS-generated html
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| 115 | 'args' => $arguments };
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| 116 |
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| 117 | sub new {
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| 118 | my ($class) = shift (@_);
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| 119 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 120 | push(@$pluginlist, $class);
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| 121 |
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| 122 | # this bit needs to happen later after the arguments array has been
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| 123 | # finished - used for parsing the input args.
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| 124 | # push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 125 | # this one needs to go in first, to get the print info in the right order
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| 126 | push(@{$hashArgOptLists->{"OptList"}},$options);
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| 127 |
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| 128 | my $auto_converter_self = new AutoLoadConverters($pluginlist,$inputargs,$hashArgOptLists,["OpenOfficeConverter"],1);
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| 129 |
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| 130 | if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
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| 131 | if ($auto_converter_self->{'openoffice_available'}) {
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| 132 | # add openoffice convert_to options into list
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| 133 | push (@$windows_convert_to_list, @$openoffice_extra_convert_to_list);
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| 134 | }
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| 135 | push(@$arguments,@$opt_windows_args);
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| 136 | }
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| 137 | elsif ($auto_converter_self->{'openoffice_available'}) {
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| 138 | push (@$arguments,@$opt_office_args);
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| 139 | $openoffice_available = 1;
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| 140 | }
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| 141 | # TODO need to do the case where they are both enabled!!! what will the convert to list be???
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| 142 |
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| 143 | # evaluate the default for process_exp - it needs to be delayed till here so we know if openoffice is available or not. But needs to be done before parsing the args.
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| 144 | foreach my $a (@$arguments) {
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| 145 | if ($a->{'name'} eq "process_exp") {
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| 146 | my $eval_expr = $a->{'deft'};
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| 147 | $a->{'deft'} = eval "$eval_expr";
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| 148 | last;
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| 149 | }
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| 150 | }
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| 151 |
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| 152 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 153 |
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| 154 | my $cbf_self = new ConvertBinaryFile($pluginlist, $inputargs, $hashArgOptLists);
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| 155 | my $self = BasePlugin::merge_inheritance($auto_converter_self, $cbf_self);
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| 156 |
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| 157 | if ($self->{'info_only'}) {
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| 158 | # don't worry about any options etc
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| 159 | return bless $self, $class;
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| 160 | }
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| 161 |
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| 162 | $self = bless $self, $class;
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| 163 | $self->{'file_type'} = "PPT";
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| 164 |
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| 165 | if ($self->{'convert_to'} eq "auto") {
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| 166 | if ($self->{'windows_scripting'}) {
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| 167 | $self->{'convert_to'} = "pagedimg_jpg";
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| 168 | }
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| 169 | else {
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| 170 | $self->{'convert_to'} = "html";
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| 171 | }
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| 172 | }
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| 173 |
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| 174 | my $outhandle = $self->{'outhandle'};
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| 175 |
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| 176 | # can't have windows_scripting and openoffice_conversion at the same time
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| 177 | if ($self->{'windows_scripting'} && $self->{'openoffice_conversion'}) {
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| 178 | print $outhandle "Warning: Cannot have -windows_scripting and -openoffice_conversion\n";
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| 179 | print $outhandle " on at the same time. Defaulting to -windows_scripting\n";
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| 180 | $self->{'openoffice_conversion'} = 0;
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| 181 | }
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| 182 |
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| 183 | #these are passed through to gsConvert.pl by ConvertBinaryFile.pm
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| 184 | $self->{'convert_options'} = "-windows_scripting" if $self->{'windows_scripting'};
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| 185 |
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| 186 | # set convert_to_plugin and convert_to_ext
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| 187 | $self->set_standard_convert_settings();
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| 188 |
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| 189 | my $secondary_plugin_name = $self->{'convert_to_plugin'};
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| 190 | my $secondary_plugin_options = $self->{'secondary_plugin_options'};
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| 191 |
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| 192 | if (!defined $secondary_plugin_options->{$secondary_plugin_name}) {
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| 193 | $secondary_plugin_options->{$secondary_plugin_name} = [];
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| 194 | }
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| 195 | my $specific_options = $secondary_plugin_options->{$secondary_plugin_name};
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| 196 |
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| 197 | push(@$specific_options, "-file_rename_method", "none");
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| 198 | push(@$specific_options, "-extract_language") if $self->{'extract_language'};
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| 199 |
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| 200 | if ($secondary_plugin_name eq "HTMLPlugin") {
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| 201 | push(@$specific_options, "-processing_tmp_files");
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| 202 | push(@$specific_options,"-metadata_fields","Title,GENERATOR,date,author<Creator>");
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| 203 | }
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| 204 | elsif ($secondary_plugin_name eq "PagedImagePlugin") {
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| 205 | push(@$specific_options, "-processing_tmp_files");
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| 206 | #is this true??
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| 207 | push(@$specific_options,"-input_encoding", "utf8");
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| 208 | if ($self->{'openoffice_conversion'}) {
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| 209 | push(@$specific_options, "-create_thumbnail", "false", "-create_screenview", "false");
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| 210 | }
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| 211 | }
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| 212 |
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| 213 | $self = bless $self, $class;
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| 214 |
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| 215 | $self->load_secondary_plugins($class,$secondary_plugin_options,$hashArgOptLists);
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| 216 | return $self;
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| 217 | }
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| 218 |
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| 219 | sub get_default_process_exp {
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| 220 | my $self = shift (@_);
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| 221 |
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| 222 | if ($openoffice_available) {
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| 223 | return q^(?i)\.(ppt|pptx|odp)$^;
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| 224 | }
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| 225 |
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| 226 | return q^(?i)\.ppt$^;
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| 227 | }
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| 228 |
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| 229 | sub init {
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| 230 | my $self = shift (@_);
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| 231 |
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| 232 | # ConvertBinaryFile init
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| 233 | $self->SUPER::init(@_);
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| 234 | $self->AutoLoadConverters::init();
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| 235 |
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| 236 | }
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| 237 |
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| 238 | sub begin {
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| 239 | my $self = shift (@_);
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| 240 |
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| 241 | $self->AutoLoadConverters::begin();
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| 242 | $self->SUPER::begin(@_);
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| 243 |
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| 244 | }
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| 245 |
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| 246 | sub deinit {
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| 247 | my $self = shift (@_);
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| 248 |
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| 249 | $self->AutoLoadConverters::deinit();
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| 250 | $self->SUPER::deinit(@_);
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| 251 |
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| 252 | }
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| 253 |
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| 254 | # override AutoLoadConverters version, as we need to do more stuff once its converted if we are converting to item file
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| 255 | sub tmp_area_convert_file {
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| 256 | my $self = shift (@_);
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| 257 | my ($output_ext, $input_filename, $textref) = @_;
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| 258 |
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| 259 | if ($self->{'openoffice_conversion'}) {
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| 260 | if ($self->{'convert_to'} eq "pagedimg") {
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| 261 | $output_ext = "html"; # first convert to html
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| 262 | }
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| 263 | my ($result, $result_str, $new_filename) = $self->OpenOfficeConverter::convert($input_filename, $output_ext);
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| 264 | if ($result == 0) {
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| 265 | my $outhandle=$self->{'outhandle'};
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| 266 | print $outhandle "OpenOfficeConverter Conversion error\n";
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| 267 | print $outhandle $result_str;
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| 268 | return "";
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| 269 |
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| 270 | }
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| 271 | #print STDERR "result = $result\n";
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| 272 | if ($self->{'convert_to'} eq "pagedimg") {
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| 273 | my $item_filename = $self->generate_item_file($new_filename);
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| 274 | return $item_filename;
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| 275 | }
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| 276 | return $new_filename;
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| 277 |
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| 278 | }
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| 279 | else {
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| 280 | return $self->ConvertBinaryFile::tmp_area_convert_file(@_);
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| 281 | }
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| 282 | # get tmp filename
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| 283 | }
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| 284 |
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| 285 | # override default read in some situations, as the conversion of ppt to html results in many files, and we want them all to be processed.
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| 286 | sub read {
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| 287 | my $self = shift (@_);
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| 288 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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| 289 |
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| 290 | # can we process this file??
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| 291 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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| 292 |
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| 293 | return undef unless $self->can_process_this_file($filename_full_path);
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| 294 |
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| 295 | # we are only doing something special for html_multi
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| 296 | if (!($self->{'openoffice_conversion'} && $self->{'convert_to'} eq "html_multi")) {
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| 297 | return $self->BasePlugin::read(@_);
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| 298 | }
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| 299 | my $outhandle = $self->{'outhandle'};
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| 300 | print STDERR "<Processing n='$file' p='$self->{'plugin_type'}'>\n" if ($gli);
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| 301 | print $outhandle "$self->{'plugin_type'} processing $file\n"
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| 302 | if $self->{'verbosity'} > 1;
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| 303 |
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| 304 | my $conv_filename = $self->tmp_area_convert_file("html", $filename_full_path);
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| 305 | if ("$conv_filename" eq "") {return -1;} # had an error, will be passed down pipeline
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| 306 | if (! -e "$conv_filename") {return -1;}
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| 307 |
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| 308 | my ($tailname, $html_dirname, $suffix)
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| 309 | = &File::Basename::fileparse($conv_filename, "\\.[^\\.]+\$");
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| 310 |
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| 311 | my $collect_file = &util::filename_within_collection($filename_full_path);
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| 312 | my $dirname_within_collection = &util::filename_within_collection($html_dirname);
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| 313 | my $secondary_plugin = $self->{'secondary_plugins'}->{"HTMLPlugin"};
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| 314 |
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| 315 | my @dir;
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| 316 | if (!opendir (DIR, $html_dirname)) {
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| 317 | print $outhandle "PowerPointPlugin: Couldn't read directory $html_dirname\n";
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| 318 | # just process the original file
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| 319 | @dir = ("$tailname.$suffix");
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| 320 |
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| 321 | } else {
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| 322 | @dir = readdir (DIR);
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| 323 | closedir (DIR);
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| 324 | }
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| 325 |
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| 326 | foreach my $file (@dir) {
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| 327 | next unless $file =~ /\.html$/;
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| 328 |
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| 329 | my ($rv, $doc_obj) =
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| 330 | $secondary_plugin->read_into_doc_obj ($pluginfo,"", &util::filename_cat($html_dirname,$file), $block_hash, {}, $processor, $maxdocs, $total_count, $gli);
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| 331 | if ((!defined $rv) || ($rv<1)) {
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| 332 | # wasn't processed
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| 333 | return $rv;
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| 334 | }
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| 335 |
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| 336 | # next block copied from ConvertBinaryFile
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| 337 | # from here ...
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| 338 | # Override previous gsdlsourcefilename set by secondary plugin
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| 339 |
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| 340 | $doc_obj->set_source_filename ($collect_file, $self->{'file_rename_method'});
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| 341 | ## set_source_filename does not set the doc_obj source_path which is used in archives dbs for incremental
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| 342 | # build. so set it manually.
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| 343 | $doc_obj->set_source_path($filename_full_path);
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| 344 | $doc_obj->set_converted_filename(&util::filename_cat($dirname_within_collection, $file));
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| 345 |
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| 346 | my $plugin_filename_encoding = $self->{'filename_encoding'};
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| 347 | my $filename_encoding = $self->deduce_filename_encoding($file,$metadata,$plugin_filename_encoding);
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| 348 | $self->set_Source_metadata($doc_obj, $filename_full_path,$filename_encoding);
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| 349 |
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| 350 | $doc_obj->set_utf8_metadata_element($doc_obj->get_top_section(), "Plugin", "$self->{'plugin_type'}");
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| 351 | $doc_obj->set_utf8_metadata_element($doc_obj->get_top_section(), "FileSize", (-s $filename_full_path));
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| 352 |
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| 353 |
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| 354 | my ($tailname, $dirname, $suffix)
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| 355 | = &File::Basename::fileparse($filename_full_path, "\\.[^\\.]+\$");
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| 356 | $doc_obj->set_utf8_metadata_element($doc_obj->get_top_section(), "FilenameRoot", $tailname);
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| 357 |
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| 358 |
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| 359 | my $topsection = $doc_obj->get_top_section();
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| 360 | $self->add_associated_files($doc_obj, $filename_full_path);
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| 361 |
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| 362 | # extra_metadata is already called by sec plugin in process??
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| 363 | $self->extra_metadata($doc_obj, $topsection, $metadata); # do we need this here??
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| 364 | # do any automatic metadata extraction
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| 365 | $self->auto_extract_metadata ($doc_obj);
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| 366 |
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| 367 | # have we found a Title??
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| 368 | $self->title_fallback($doc_obj,$topsection,$filename_no_path);
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| 369 |
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| 370 | # use the one generated by HTMLPlugin, otherwise they all end up with same id.
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| 371 | #$self->add_OID($doc_obj);
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| 372 | # to here...
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| 373 |
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| 374 | # process it
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| 375 | $processor->process($doc_obj);
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| 376 | undef $doc_obj;
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| 377 | }
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| 378 | $self->{'num_processed'} ++;
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| 379 |
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| 380 | # my ($process_status,$doc_obj) = $self->read_into_doc_obj(@_);
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| 381 |
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| 382 | # if ((defined $process_status) && ($process_status == 1)) {
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| 383 |
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| 384 | # process the document
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| 385 | # $processor->process($doc_obj);
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| 386 |
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| 387 | # $self->{'num_processed'} ++;
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| 388 | # undef $doc_obj;
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| 389 | # }
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| 390 | # delete any temp files that we may have created
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| 391 | $self->clean_up_after_doc_obj_processing();
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| 392 |
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| 393 |
|
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| 394 | # if process_status == 1, then the file has been processed.
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| 395 | return 1;
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| 396 |
|
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| 397 | }
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| 398 |
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| 399 | sub generate_item_file
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| 400 | {
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| 401 | my $self = shift(@_);
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| 402 | my ($input_filename) = @_;
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| 403 | my $outhandle = $self->{'outhandle'};
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| 404 | my ($tailname, $dirname, $suffix)
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| 405 | = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
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|---|
| 406 |
|
|---|
| 407 | # find all the files in the directory
|
|---|
| 408 | if (!opendir (DIR, $dirname)) {
|
|---|
| 409 | print $outhandle "PowerPointPlugin: Couldn't read directory $dirname\n";
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|---|
| 410 | return $input_filename;
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|---|
| 411 | }
|
|---|
| 412 |
|
|---|
| 413 | my @dir = readdir (DIR);
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|---|
| 414 | closedir (DIR);
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|---|
| 415 |
|
|---|
| 416 | # start the item file
|
|---|
| 417 | my $itemfile_name = &util::filename_cat($dirname, "$tailname.item");
|
|---|
| 418 |
|
|---|
| 419 | # encoding specification????
|
|---|
| 420 | if (!open (ITEMFILE, ">$itemfile_name")) {
|
|---|
| 421 | print $outhandle "PowerPOintPlugin: Couldn't open $itemfile_name for writing\n";
|
|---|
| 422 | }
|
|---|
| 423 | print ITEMFILE "<GeneratedBy>PowerPointPlugin\n";
|
|---|
| 424 | # print the first page
|
|---|
| 425 | my @sorted_dir = sort alphanum_sort @dir;
|
|---|
| 426 | for (my $i = 0; $i < scalar(@sorted_dir); $i++) {
|
|---|
| 427 | my $file = $sorted_dir[$i];
|
|---|
| 428 | if ($file =~ /^img(\d+)\.jpg$/) {
|
|---|
| 429 | my $num = $1;
|
|---|
| 430 | $self->tidy_up_html(&util::filename_cat($dirname, "text$num.html"));
|
|---|
| 431 | print ITEMFILE "$num:img$num.jpg:text$num.html:\n";
|
|---|
| 432 | }
|
|---|
| 433 | }
|
|---|
| 434 | close ITEMFILE;
|
|---|
| 435 | return $itemfile_name;
|
|---|
| 436 |
|
|---|
| 437 |
|
|---|
| 438 | }
|
|---|
| 439 |
|
|---|
| 440 | # want to sort img1, img2, ...img10, img11 etc.
|
|---|
| 441 | sub alphanum_sort {
|
|---|
| 442 |
|
|---|
| 443 | my ($a_txt, $a_num) = $a =~ /^([^\d]*)(\d*)/;
|
|---|
| 444 | my ($b_txt, $b_num) = $b =~ /^([^\d]*)(\d*)/;
|
|---|
| 445 |
|
|---|
| 446 | if ($a_txt ne $b_txt) { return ($a cmp $b) };
|
|---|
| 447 | return ($a_num <=> $b_num);
|
|---|
| 448 | }
|
|---|
| 449 |
|
|---|
| 450 | # Want to remove the line that links to first page, last page, next page, text etc.
|
|---|
| 451 | sub tidy_up_html {
|
|---|
| 452 |
|
|---|
| 453 | my $self = shift(@_);
|
|---|
| 454 | my ($filename) = @_;
|
|---|
| 455 | return unless (-f $filename);
|
|---|
| 456 | my $backup_filename = "$filename.bak";
|
|---|
| 457 |
|
|---|
| 458 | &File::Copy::copy($filename, $backup_filename);
|
|---|
| 459 |
|
|---|
| 460 | open (ORIGINAL, $backup_filename) || return;
|
|---|
| 461 | open(HTMLFILE, ">$filename") || return;
|
|---|
| 462 |
|
|---|
| 463 | my $line ="";
|
|---|
| 464 | while ($line = <ORIGINAL>) {
|
|---|
| 465 | if ($line =~ /\<body\>/) {
|
|---|
| 466 | print HTMLFILE $line;
|
|---|
| 467 | $line = <ORIGINAL>;
|
|---|
| 468 | next if $line =~ /\<center\>/;
|
|---|
| 469 | }
|
|---|
| 470 | next if $line =~ /First page/;
|
|---|
| 471 | print HTMLFILE ($line);
|
|---|
| 472 | }
|
|---|
| 473 |
|
|---|
| 474 | close HTMLFILE;
|
|---|
| 475 | close ORIGINAL;
|
|---|
| 476 | }
|
|---|
| 477 | 1;
|
|---|
| 478 |
|
|---|
