[1733] | 1 | ###########################################################################
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| 2 | #
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| 3 | # ImagePlug.pm -- simple text plugin
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 | package ImagePlug;
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| 27 |
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| 28 | use BasPlug;
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| 29 |
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[10254] | 30 | use strict;
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| 31 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 32 |
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[1733] | 33 | sub BEGIN {
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[10254] | 34 | @ImagePlug::ISA = ('BasPlug');
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[1733] | 35 | }
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| 36 |
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[4744] | 37 | my $arguments =
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| 38 | [ { 'name' => "process_exp",
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[4873] | 39 | 'desc' => "{BasPlug.process_exp}",
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[6408] | 40 | 'type' => "regexp",
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[4744] | 41 | 'deft' => &get_default_process_exp(),
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| 42 | 'reqd' => "no" },
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| 43 | { 'name' => "noscaleup",
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[4873] | 44 | 'desc' => "{ImagePlug.noscaleup}",
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[4744] | 45 | 'type' => "flag",
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| 46 | 'reqd' => "no" },
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| 47 | { 'name' => "thumbnailsize",
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[4873] | 48 | 'desc' => "{ImagePlug.thumbnailsize}",
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[4744] | 49 | 'type' => "int",
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| 50 | 'deft' => "100",
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[10218] | 51 | 'range' => "1,",
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[4744] | 52 | 'reqd' => "no" },
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| 53 | { 'name' => "thumbnailtype",
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[4873] | 54 | 'desc' => "{ImagePlug.thumbnailtype}",
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[4744] | 55 | 'type' => "string",
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| 56 | 'deft' => "gif",
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| 57 | 'reqd' => "no" },
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| 58 | { 'name' => "screenviewsize",
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[4873] | 59 | 'desc' => "{ImagePlug.screenviewsize}",
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[4744] | 60 | 'type' => "int",
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| 61 | 'deft' => "0",
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[10218] | 62 | 'range' => "1,",
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[4744] | 63 | 'reqd' => "no" },
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| 64 | { 'name' => "screenviewtype",
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[4873] | 65 | 'desc' => "{ImagePlug.screenviewtype}",
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[4744] | 66 | 'type' => "string",
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| 67 | 'deft' => "jpg",
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| 68 | 'reqd' => "no" },
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| 69 | { 'name' => "converttotype",
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[4873] | 70 | 'desc' => "{ImagePlug.converttotype}",
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[4744] | 71 | 'type' => "string",
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| 72 | 'deft' => "",
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| 73 | 'reqd' => "no" },
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| 74 | { 'name' => "minimumsize",
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[4873] | 75 | 'desc' => "{ImagePlug.minimumsize}",
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[4744] | 76 | 'type' => "int",
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| 77 | 'deft' => "100",
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[10218] | 78 | 'range' => "1,",
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[4744] | 79 | 'reqd' => "no" } ];
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[1758] | 80 |
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[3540] | 81 | my $options = { 'name' => "ImagePlug",
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[5680] | 82 | 'desc' => "{ImagePlug.desc}",
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[6408] | 83 | 'abstract' => "no",
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[3540] | 84 | 'inherits' => "yes",
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| 85 | 'args' => $arguments };
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| 86 |
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| 87 |
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[1744] | 88 |
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[1733] | 89 | sub new {
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[10218] | 90 | my ($class) = shift (@_);
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| 91 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 92 | push(@$pluginlist, $class);
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[4724] | 93 |
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[10218] | 94 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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| 95 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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[2230] | 96 |
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[12169] | 97 | my $self = new BasPlug($pluginlist, $inputargs, $hashArgOptLists);
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[14952] | 98 | $self->{'tmp_file_paths'} = ();
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[1744] | 99 |
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[9574] | 100 | # Check that ImageMagick is installed and available on the path (except for Windows 95/98)
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| 101 | if (!($ENV{'GSDLOS'} eq "windows" && !Win32::IsWinNT())) {
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| 102 | my $result = `identify 2>&1`;
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| 103 | if ($? == -1 || $? == 256) { # Linux and Windows return different values for "program not found"
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| 104 | $self->{'imagemagick_not_installed'} = 1;
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| 105 | }
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[8145] | 106 | }
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| 107 |
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[13243] | 108 |
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[1733] | 109 | return bless $self, $class;
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| 110 | }
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| 111 |
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| 112 | sub get_default_process_exp {
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| 113 | my $self = shift (@_);
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| 114 |
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[1758] | 115 | return q^(?i)(\.jpe?g|\.gif|\.png|\.bmp|\.xbm|\.tif?f)$^;
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[1733] | 116 | }
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| 117 |
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[9067] | 118 | # this makes no sense for images
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| 119 | sub block_cover_image
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| 120 | {
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| 121 | my $self =shift (@_);
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| 122 | my ($filename) = @_;
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[2230] | 123 |
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[9067] | 124 | return;
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| 125 | }
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[2230] | 126 | # Create the thumbnail and screenview images, and discover the Image's
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| 127 | # size, width, and height using the convert utility.
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| 128 |
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[14950] | 129 | sub generate_images
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| 130 | {
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[1733] | 131 | my $self = shift (@_);
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[2230] | 132 | my $filename = shift (@_); # filename with full path
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| 133 | my $file = shift (@_); # filename without path
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[1733] | 134 | my $doc_obj = shift (@_);
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[1744] | 135 | my $section = $doc_obj->get_top_section();
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[2230] | 136 |
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| 137 | my $verbosity = $self->{'verbosity'};
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| 138 | my $outhandle = $self->{'outhandle'};
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[1733] | 139 |
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[2230] | 140 | # check the filename is okay
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| 141 | return 0 if ($file eq "" || $filename eq "");
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| 142 |
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[3307] | 143 | # Code now extended to quote filenames in 'convert' commnads
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| 144 | # Allows spaces in filenames, but note needs spaces to be escaped in URL as well
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| 145 | # if ($filename =~ m/ /) {
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| 146 | # print $outhandle "ImagePlug: \"$filename\" contains a space. choking.\n";
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| 147 | # return undef;
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| 148 | # }
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[1744] | 149 |
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[1758] | 150 | my $minimumsize = $self->{'minimumsize'};
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[2230] | 151 | if (defined $minimumsize && (-s $filename < $minimumsize)) {
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| 152 | print $outhandle "ImagePlug: \"$filename\" too small, skipping\n"
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| 153 | if ($verbosity > 1);
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| 154 | }
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| 155 |
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[4724] | 156 |
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[2230] | 157 | # Convert the image to a new type (if required).
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[1744] | 158 | my $converttotype = $self->{'converttotype'};
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[2230] | 159 | my $originalfilename = ""; # only set if we do a conversion
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[1733] | 160 | my $type = "unknown";
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[1758] | 161 |
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[13879] | 162 | if ($converttotype ne "" && $filename !~ m/$converttotype$/) {
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[1744] | 163 | $originalfilename = $filename;
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[2230] | 164 | $filename = &util::get_tmp_filename() . ".$converttotype";
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| 165 |
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[14951] | 166 | my $result = $self->convert($originalfilename, $filename, "", "");
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[2230] | 167 |
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[1744] | 168 | $type = $converttotype;
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[13879] | 169 | $file =~ s/\..*$/\.$type/;
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[1733] | 170 | }
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[1744] | 171 |
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[4724] | 172 |
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[3137] | 173 | # Add the image metadata
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[3307] | 174 | my $url = $file;
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[13542] | 175 |
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| 176 | ##not know why it is required at the first place, it seems all works fine without it, so I comment it out
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| 177 | ##$url =~ s/ /%20/g;
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[3307] | 178 |
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| 179 | $doc_obj->add_metadata ($section, "Image", $url);
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[3517] | 180 |
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| 181 | # Also want to set filename as 'Source' metadata to be
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| 182 | # consistent with other plugins
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| 183 | $doc_obj->add_metadata ($section, "Source", $url);
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| 184 |
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[3137] | 185 | my ($image_type, $image_width, $image_height, $image_size)
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| 186 | = &identify($filename, $outhandle, $verbosity);
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[2230] | 187 |
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[8121] | 188 | if ($image_type ne " ") {
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| 189 | $type = $image_type;
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| 190 | }
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| 191 |
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| 192 | $doc_obj->add_metadata ($section, "FileFormat", $type);
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[8166] | 193 | $doc_obj->add_metadata ($section, "FileSize", $image_size);
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[8121] | 194 |
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[3137] | 195 | $doc_obj->add_metadata ($section, "ImageType", $image_type);
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| 196 | $doc_obj->add_metadata ($section, "ImageWidth", $image_width);
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| 197 | $doc_obj->add_metadata ($section, "ImageHeight", $image_height);
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| 198 | $doc_obj->add_metadata ($section, "ImageSize", $image_size);
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[14117] | 199 | $doc_obj->add_metadata ($section, "NoText", "1");
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[3137] | 200 |
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[4724] | 201 | $doc_obj->add_metadata ($section, "srclink",
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[11834] | 202 | "<a href=\"_httpprefix_/collect/[collection]/index/assoc/[assocfilepath]/[Image]\">");
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[4724] | 203 | $doc_obj->add_metadata ($section, "/srclink", "</a>");
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| 204 |
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[11834] | 205 | $doc_obj->add_metadata ($section, "srcicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/[assocfilepath]/[Image]\" width=100>");
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[4724] | 206 |
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| 207 |
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[3137] | 208 | # Add the image as an associated file
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| 209 | $doc_obj->associate_file($filename,$file,"image/$type",$section);
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| 210 |
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[4724] | 211 |
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[2230] | 212 | # Make the thumbnail image
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[3137] | 213 | my $thumbnailsize = $self->{'thumbnailsize'} || 100;
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[2230] | 214 | my $thumbnailtype = $self->{'thumbnailtype'} || 'gif';
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[4724] | 215 |
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[3137] | 216 | my $thumbnailfile = &util::get_tmp_filename() . ".$thumbnailtype";
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[1733] | 217 |
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[2230] | 218 | # Generate the thumbnail with convert
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[14951] | 219 | my $result = $self->convert($filename, $thumbnailfile, "-geometry $thumbnailsize" . "x$thumbnailsize", "THUMB");
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[2230] | 220 |
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| 221 | # Add the thumbnail as an associated file ...
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[3137] | 222 | if (-e "$thumbnailfile") {
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| 223 | $doc_obj->associate_file("$thumbnailfile", "thumbnail.$thumbnailtype",
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[2230] | 224 | "image/$thumbnailtype",$section);
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| 225 | $doc_obj->add_metadata ($section, "ThumbType", $thumbnailtype);
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| 226 | $doc_obj->add_metadata ($section, "Thumb", "thumbnail.$thumbnailtype");
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[4724] | 227 |
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[11834] | 228 | $doc_obj->add_metadata ($section, "thumbicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/[assocfilepath]/[Thumb]\" width=[ThumbWidth] height=[ThumbHeight]>");
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[2230] | 229 | }
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| 230 |
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[3137] | 231 | # Extract Thumnail metadata from convert output
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| 232 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
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| 233 | $doc_obj->add_metadata ($section, "ThumbWidth", $1);
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| 234 | $doc_obj->add_metadata ($section, "ThumbHeight", $2);
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[1733] | 235 | }
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[1758] | 236 |
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[2230] | 237 | # Make a screen-sized version of the picture if requested
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| 238 | if ($self->{'screenviewsize'}) {
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| 239 |
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[3137] | 240 | # To do: if the actual image smaller than the screenview size,
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| 241 | # we should use the original !
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| 242 |
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[2230] | 243 | my $screenviewsize = $self->{'screenviewsize'};
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| 244 | my $screenviewtype = $self->{'screenviewtype'} || 'jpeg';
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| 245 | my $screenviewfilename = &util::get_tmp_filename() . ".$screenviewtype";
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| 246 |
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| 247 | # make the screenview image
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[14951] | 248 | my $result = $self->convert($filename, $screenviewfilename, "-geometry $screenviewsize" . "x$screenviewsize", "SCREEN");
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[2230] | 249 |
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| 250 | # get screenview dimensions, size and type
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| 251 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
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| 252 | $doc_obj->add_metadata ($section, "ScreenWidth", $1);
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| 253 | $doc_obj->add_metadata ($section, "ScreenHeight", $2);
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| 254 | }
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[5078] | 255 | else {
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| 256 | $doc_obj->add_metadata ($section, "ScreenWidth", $image_width);
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| 257 | $doc_obj->add_metadata ($section, "ScreenHeight", $image_height);
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| 258 | }
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| 259 |
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[2230] | 260 | #add the screenview as an associated file ...
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| 261 | if (-e "$screenviewfilename") {
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| 262 | $doc_obj->associate_file("$screenviewfilename", "screenview.$screenviewtype",
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| 263 | "image/$screenviewtype",$section);
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| 264 | $doc_obj->add_metadata ($section, "ScreenType", $screenviewtype);
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| 265 | $doc_obj->add_metadata ($section, "Screen", "screenview.$screenviewtype");
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[4724] | 266 |
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[11834] | 267 | $doc_obj->add_metadata ($section, "screenicon", "<img src=\"_httpprefix_/collect/[collection]/index/assoc/[assocfilepath]/[Screen]\" width=[ScreenWidth] height=[ScreenHeight]>");
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[2230] | 268 | } else {
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| 269 | print $outhandle "ImagePlug: couldn't find \"$screenviewfilename\"\n";
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| 270 | }
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| 271 | }
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| 272 |
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[1733] | 273 | return $type;
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[4724] | 274 |
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| 275 |
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[3137] | 276 | }
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[2230] | 277 |
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| 278 |
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[4724] | 279 |
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[3137] | 280 | # Discover the characteristics of an image file with the ImageMagick
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| 281 | # "identify" command.
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| 282 |
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| 283 | sub identify {
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| 284 | my ($image, $outhandle, $verbosity) = @_;
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| 285 |
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| 286 | # Use the ImageMagick "identify" command to get the file specs
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[5845] | 287 | my $command = "identify \"$image\" 2>&1";
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[3137] | 288 | print $outhandle "$command\n" if ($verbosity > 2);
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| 289 | my $result = '';
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| 290 | $result = `$command`;
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| 291 | print $outhandle "$result\n" if ($verbosity > 3);
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| 292 |
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| 293 | # Read the type, width, and height
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| 294 | my $type = 'unknown';
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| 295 | my $width = 'unknown';
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| 296 | my $height = 'unknown';
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| 297 |
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[4790] | 298 | my $image_safe = quotemeta $image;
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| 299 | if ($result =~ /^$image_safe (\w+) (\d+)x(\d+)/) {
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[3137] | 300 | $type = $1;
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| 301 | $width = $2;
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| 302 | $height = $3;
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| 303 | }
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[5103] | 304 |
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[3137] | 305 | # Read the size
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| 306 | my $size = "unknown";
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| 307 | if ($result =~ m/^.* ([0-9]+)b/) {
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| 308 | $size = $1;
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[5103] | 309 | }
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[5845] | 310 | elsif ($result =~ m/^.* ([0-9]+)(\.([0-9]+))?kb?/) {
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[3137] | 311 | $size = 1024 * $1;
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[5103] | 312 | if (defined($2)) {
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| 313 | $size = $size + (1024 * $2);
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| 314 | # Truncate size (it isn't going to be very accurate anyway)
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| 315 | $size = int($size);
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| 316 | }
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[3137] | 317 | }
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| 318 |
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| 319 | print $outhandle "file: $image:\t $type, $width, $height, $size\n"
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| 320 | if ($verbosity > 2);
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| 321 |
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| 322 | # Return the specs
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| 323 | return ($type, $width, $height, $size);
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[1733] | 324 | }
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| 325 |
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| 326 |
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[14951] | 327 | sub convert
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| 328 | {
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| 329 | my $self = shift(@_);
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| 330 | my $source_file_path = shift(@_);
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| 331 | my $target_file_path = shift(@_);
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| 332 | my $convert_options = shift(@_) || "";
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| 333 | my $convert_type = shift(@_) || "";
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| 334 |
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| 335 | my $outhandle = $self->{'outhandle'};
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| 336 | my $verbosity = $self->{'verbosity'};
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| 337 |
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| 338 | my $convert_command = "convert -interlace plane -verbose $convert_options \"$source_file_path\" \"$target_file_path\"";
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| 339 | print $outhandle "$convert_type $convert_command\n" if ($verbosity > 2);
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| 340 | my $result = `$convert_command 2>&1`;
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| 341 | print $outhandle "$convert_type RESULT = $result\n" if ($verbosity > 2);
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| 342 |
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[14952] | 343 | push(@{$self->{'tmp_file_paths'}}, $target_file_path);
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| 344 |
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[14951] | 345 | return $result;
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| 346 | }
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| 347 |
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| 348 |
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[11090] | 349 | # The ImagePlug read() function.
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[1733] | 350 | # ImagePlug overrides read() because there is no need to read the actual
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| 351 | # text of the file in, because the contents of the file is not text...
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| 352 | #
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| 353 | # Return number of files processed, undef if can't process
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| 354 | # Note that $base_dir might be "" and that $file might
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| 355 | # include directories
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| 356 |
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| 357 | sub read {
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| 358 | my $self = shift (@_);
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[9853] | 359 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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[1733] | 360 |
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[2230] | 361 | my $outhandle = $self->{'outhandle'};
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| 362 |
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[11090] | 363 | #check process and block exps, smart block, etc
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| 364 | my ($block_status,$filename) = $self->read_block(@_);
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| 365 | return $block_status if ((!defined $block_status) || ($block_status==0));
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[6332] | 366 |
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| 367 | print STDERR "<Processing n='$file' p='ImagePlug'>\n" if ($gli);
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[9960] | 368 | print $outhandle "ImagePlug processing $file\n"
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[1758] | 369 | if $self->{'verbosity'} > 1;
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| 370 |
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[9585] | 371 | # None of this works very well on Windows 95/98...
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| 372 | if ($ENV{'GSDLOS'} eq "windows" && !Win32::IsWinNT()) {
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| 373 | if ($gli) {
|
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| 374 | print STDERR "<ProcessingError n='$file' r='Windows 95/98 not supported'>\n";
|
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| 375 | }
|
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[9703] | 376 | print $outhandle "ImagePlug: Windows 95/98 not supported\n";
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[9585] | 377 | return -1;
|
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| 378 | }
|
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| 379 |
|
---|
| 380 | # None of this is going to work very well without ImageMagick...
|
---|
| 381 | if ($self->{'imagemagick_not_installed'}) {
|
---|
| 382 | if ($gli) {
|
---|
| 383 | print STDERR "<ProcessingError n='$file' r='ImageMagick not installed'>\n";
|
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| 384 | }
|
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[9703] | 385 | print $outhandle "ImagePlug: ImageMagick not installed\n";
|
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[9585] | 386 | return -1;
|
---|
| 387 | }
|
---|
| 388 |
|
---|
[2230] | 389 | #if there's a leading directory name, eat it...
|
---|
| 390 | $file =~ s/^.*[\/\\]//;
|
---|
[1733] | 391 |
|
---|
| 392 | # create a new document
|
---|
| 393 | my $doc_obj = new doc ($filename, "indexed_doc");
|
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[12270] | 394 | $doc_obj->set_OIDtype ($processor->{'OIDtype'}, $processor->{'OIDmetadata'});
|
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[7508] | 395 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Plugin", "$self->{'plugin_type'}");
|
---|
[2327] | 396 |
|
---|
[1733] | 397 | #run convert to get the thumbnail and extract size and type info
|
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[14950] | 398 | my $result = generate_images($self, $filename, $file, $doc_obj);
|
---|
[1744] | 399 |
|
---|
[1758] | 400 | if (!defined $result)
|
---|
[1744] | 401 | {
|
---|
[9585] | 402 | if ($gli) {
|
---|
| 403 | print STDERR "<ProcessingError n='$file'>\n";
|
---|
| 404 | }
|
---|
[9703] | 405 | print $outhandle "ImagePlug: couldn't process \"$filename\"\n";
|
---|
[7362] | 406 | return -1; # error during processing
|
---|
[1733] | 407 | }
|
---|
| 408 |
|
---|
[13243] | 409 |
|
---|
[13269] | 410 | #create an empty text string so we don't break downstream plugins
|
---|
| 411 | my $text = &gsprintf::lookup_string("{BasPlug.dummy_text}",1);
|
---|
| 412 |
|
---|
[1733] | 413 | # include any metadata passed in from previous plugins
|
---|
| 414 | # note that this metadata is associated with the top level section
|
---|
[1744] | 415 | my $section = $doc_obj->get_top_section();
|
---|
[1733] | 416 | $self->extra_metadata ($doc_obj, $section, $metadata);
|
---|
| 417 |
|
---|
| 418 | # do plugin specific processing of doc_obj
|
---|
[9585] | 419 | unless (defined ($self->process(\$text, $pluginfo, $base_dir, $file, $metadata, $doc_obj))) {
|
---|
| 420 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
|
---|
| 421 | return -1;
|
---|
| 422 | }
|
---|
[1733] | 423 |
|
---|
| 424 | # do any automatic metadata extraction
|
---|
| 425 | $self->auto_extract_metadata ($doc_obj);
|
---|
| 426 |
|
---|
[8350] | 427 | # if we haven't found any Title so far, assign one
|
---|
| 428 | # this was shifted to here from inside read()
|
---|
| 429 | $self->title_fallback($doc_obj,$section,$file);
|
---|
[1733] | 430 | # add an OID
|
---|
| 431 | $doc_obj->set_OID();
|
---|
[13243] | 432 | $doc_obj->add_utf8_text($section, $text);
|
---|
[1733] | 433 |
|
---|
| 434 | # process the document
|
---|
| 435 | $processor->process($doc_obj);
|
---|
| 436 |
|
---|
[2230] | 437 | # clean up temporary files - we do this here instead of in
|
---|
[14950] | 438 | # generate_images becuase associated files aren't actually copied
|
---|
[2230] | 439 | # until after process has been run.
|
---|
[14952] | 440 | foreach my $tmp_file_path (@{$self->{'tmp_file_paths'}})
|
---|
| 441 | {
|
---|
| 442 | if (-e $tmp_file_path)
|
---|
| 443 | {
|
---|
| 444 | &util::rm($tmp_file_path);
|
---|
| 445 | }
|
---|
[1733] | 446 | }
|
---|
[13243] | 447 |
|
---|
[3307] | 448 | $self->{'num_processed'}++;
|
---|
| 449 |
|
---|
[2207] | 450 | return 1;
|
---|
[1733] | 451 | }
|
---|
| 452 |
|
---|
| 453 | # do plugin specific processing of doc_obj
|
---|
| 454 | sub process {
|
---|
| 455 | my $self = shift (@_);
|
---|
| 456 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj) = @_;
|
---|
| 457 | my $outhandle = $self->{'outhandle'};
|
---|
| 458 |
|
---|
| 459 | return 1;
|
---|
| 460 | }
|
---|
| 461 |
|
---|
| 462 | 1;
|
---|
[4724] | 463 |
|
---|
| 464 |
|
---|
| 465 |
|
---|
| 466 |
|
---|
| 467 |
|
---|
| 468 |
|
---|
| 469 |
|
---|
| 470 |
|
---|
| 471 |
|
---|
| 472 |
|
---|
| 473 |
|
---|