| 1 | ###########################################################################
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| 2 | #
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| 3 | # PagedImgPlug.pm -- plugin for sets of images and OCR text that
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| 4 | # make up a document
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| 5 | # A component of the Greenstone digital library software
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| 6 | # from the New Zealand Digital Library Project at the
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| 7 | # University of Waikato, New Zealand.
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| 8 | #
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| 9 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 10 | #
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| 11 | # This program is free software; you can redistribute it and/or modify
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| 12 | # it under the terms of the GNU General Public License as published by
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| 13 | # the Free Software Foundation; either version 2 of the License, or
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| 14 | # (at your option) any later version.
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| 15 | #
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| 16 | # This program is distributed in the hope that it will be useful,
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| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | # GNU General Public License for more details.
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| 20 | #
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| 21 | # You should have received a copy of the GNU General Public License
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| 22 | # along with this program; if not, write to the Free Software
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| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | #
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| 25 | ###########################################################################
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| 26 |
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| 27 | # PagedImgPlug
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| 28 | # processes sequences of images, with optional OCR text
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| 29 | #
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| 30 | # This plugin takes .item files, which contain metadata and lists of image
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| 31 | # files, and produces a document containing sections, one for each page.
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| 32 | #
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| 33 | # The format of the .item file is as follows:
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| 34 | # The first lines contain any metadata for the whole document
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| 35 | # <metadata-name>metadata-value
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| 36 | # eg.
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| 37 | # <Title>Snail farming
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| 38 | # <Date>19230102
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| 39 | # Then comes a list of pages, one page per line, each line has the format
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| 40 | # pagenum:imagefile:textfile:r
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| 41 | # page num and imagefile are required. pagenum is used for the Title
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| 42 | # of the section, and in the display is shown as page <pagenum>.
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| 43 | # imagefile is the image for the page. textfile is an optional text
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| 44 | # file containing the OCR (or any) text for the page - this gets added
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| 45 | # as the text for the section. r is optional, and signals that the image
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| 46 | # should be rotated 180deg. Eg use this if the image has been made upside down.
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| 47 | # So an example item file looks like:
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| 48 | # <Title>Snail farming
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| 49 | # <Date>19960403
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| 50 | # 1:p1.gif:p1.txt:
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| 51 | # 2:p2.gif::
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| 52 | # 3:p3.gif:p3.txt:
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| 53 | # 3b:p3b.gif:p3b.txt:r
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| 54 | # The second page has no text, the fourth page is a back page, and
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| 55 | # should be rotated.
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| 56 | #
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| 57 | # All the supplemetary image amd text files should be in the same folder as
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| 58 | # the .item file.
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| 59 | #
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| 60 | # To display the images instead of the document text, you can use [srcicon]
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| 61 | # in the DocumentText format statement.
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| 62 | # For example,
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| 63 | #
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| 64 | # format DocumentText "<center><table width=_pagewidth_><tr><td>[srcicon]</td></tr></table></center>"
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| 65 |
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| 66 | # If you have used -screenview, you can also use [screenicon] in the format
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| 67 | # statement to display the smaller image. Here is an example that switches
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| 68 | # between the two:
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| 69 | #
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| 70 | # format DocumentText "<center><table width=_pagewidth_><tr><td>_If_('_cgiargp_' eq 'full',<a href='_httpdocument_&d=_cgiargd_&p=small'>Switch to small version.</a>,<a href='_httpdocument_&d=_cgiargd_&p=full'>Switch to fullsize version</a>)</td></tr><tr><td>_If_('_cgiargp_' eq 'full',<a href='_httpdocument_&d=_cgiargd_&p=small' title='Switch to small version'>[srcicon]</a>,<a href='_httpdocument_&d=_cgiargd_&p=full' title="Switch to fullsize version'>[screenicon]</a></td></tr></table></center>"
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| 71 | #
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| 72 | # Additional metadata can be added into the .item files, alternatively you can
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| 73 | # use normal metadata.xml files, with the name of the .item file as the
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| 74 | # FileName.
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| 75 |
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| 76 | package PagedImgPlug;
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| 77 |
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| 78 | use BasPlug;
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| 79 |
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| 80 | sub BEGIN {
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| 81 | @ISA = ('BasPlug');
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| 82 | }
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| 83 |
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| 84 | my $type_list =
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| 85 | [ { 'name' => "paged",
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| 86 | 'desc' => "{PagedImgPlug.documenttype.paged}" },
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| 87 | { 'name' => "hierarchy",
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| 88 | 'desc' => "{PagedImgPlug.documenttype.hierarchy}" } ];
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| 89 |
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| 90 | my $arguments =
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| 91 | [ { 'name' => "process_exp",
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| 92 | 'desc' => "{BasPlug.process_exp}",
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| 93 | 'type' => "string",
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| 94 | 'deft' => &get_default_process_exp(),
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| 95 | 'reqd' => "no" },
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| 96 | { 'name' => "block_exp",
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| 97 | 'desc' => "{BasPlug.block_exp}",
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| 98 | 'type' => "string",
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| 99 | 'deft' => &get_default_block_exp(),
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| 100 | 'reqd' => "no" },
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| 101 | { 'name' => "noscaleup",
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| 102 | 'desc' => "{ImagePlug.noscaleup}",
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| 103 | 'type' => "flag",
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| 104 | 'reqd' => "no" },
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| 105 | { 'name' => "thumbnail",
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| 106 | 'desc' => "{PagedImgPlug.thumbnail}",
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| 107 | 'type' => "flag",
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| 108 | 'reqd' => "no" },
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| 109 | { 'name' => "thumbnailsize",
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| 110 | 'desc' => "{ImagePlug.thumbnailsize}",
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| 111 | 'type' => "int",
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| 112 | 'deft' => "100",
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| 113 | 'range' => "1,",
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| 114 | 'reqd' => "no" },
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| 115 | { 'name' => "thumbnailtype",
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| 116 | 'desc' => "{ImagePlug.thumbnailtype}",
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| 117 | 'type' => "string",
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| 118 | 'deft' => "gif",
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| 119 | 'reqd' => "no" },
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| 120 | { 'name' => "screenview",
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| 121 | 'desc' => "{PagedImgPlug.screenview}",
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| 122 | 'type' => "flag",
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| 123 | 'reqd' => "no" },
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| 124 | { 'name' => "screenviewsize",
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| 125 | 'desc' => "{PagedImgPlug.screenviewsize}",
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| 126 | 'type' => "int",
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| 127 | 'deft' => "500",
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| 128 | 'range' => "1,",
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| 129 | 'reqd' => "no" },
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| 130 | { 'name' => "screenviewtype",
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| 131 | 'desc' => "{PagedImgPlug.screenviewtype}",
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| 132 | 'type' => "string",
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| 133 | 'deft' => "jpg",
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| 134 | 'reqd' => "no" },
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| 135 | { 'name' => "converttotype",
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| 136 | 'desc' => "{ImagePlug.converttotype}",
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| 137 | 'type' => "string",
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| 138 | 'deft' => "",
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| 139 | 'reqd' => "no" },
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| 140 | { 'name' => "minimumsize",
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| 141 | 'desc' => "{ImagePlug.minimumsize}",
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| 142 | 'type' => "int",
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| 143 | 'deft' => "100",
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| 144 | 'range' => "1,",
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| 145 | 'reqd' => "no" },
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| 146 | { 'name' => "noheaderpage",
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| 147 | 'desc' => "{PagedImgPlug.noheaderpage}",
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| 148 | 'type' => "flag",
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| 149 | 'reqd' => "no" },
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| 150 | { 'name' => "documenttype",
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| 151 | 'desc' => "{PagedImgPlug.documenttype}",
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| 152 | 'type' => "enum",
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| 153 | 'list' => $type_list,
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| 154 | 'deft' => "paged",
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| 155 | 'reqd' => "no" } ];
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| 156 |
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| 157 |
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| 158 | my $options = { 'name' => "PagedImgPlug",
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| 159 | 'desc' => "{PagedImgPlug.desc}",
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| 160 | 'inherits' => "yes",
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| 161 | 'args' => $arguments };
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| 162 |
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| 163 |
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| 164 | sub new {
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| 165 | my ($class) = @_;
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| 166 | my $plugin_name = shift (@_);
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| 167 | my $self = new BasPlug ("PagedImgPlug", @_);
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| 168 |
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| 169 | my $option_list = $self->{'option_list'};
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| 170 | push( @{$option_list}, $options );
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| 171 |
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| 172 | if (!parsargv::parse(\@_,
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| 173 | q^noscaleup^, \$self->{'noscaleup'},
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| 174 | q^converttotype/.*/^, \$self->{'converttotype'},
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| 175 | q^minimumsize/[0-9]*/100^, \$self->{'minimumsize'},
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| 176 |
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| 177 | q^thumbnailsize/[0-9]*/100^, \$self->{'thumbnailsize'},
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| 178 | q^thumbnailtype/.*/gif^, \$self->{'thumbnailtype'},
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| 179 | q^screenviewsize/[0-9]*/0^, \$self->{'screenviewsize'},
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| 180 | q^screenviewtype/.*/jpg^, \$self->{'screenviewtype'},
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| 181 | q^thumbnail^, \$self->{'thumbnail'},
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| 182 | q^screenview^, \$self->{'screenview'},
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| 183 | q^noheaderpage^, \$self->{'noheaderpage'},
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| 184 | 'documenttype/^(paged|hierarchy)$/paged', \$self->{'doctype'},
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| 185 | "allow_extra_options")) {
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| 186 |
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| 187 | print STDERR "\nPagedImgPlug uses an incorrect option.\n";
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| 188 | print STDERR "Check your collect.cfg configuration file.\n";
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| 189 | $self->print_txt_usage(""); # Use default resource bundle
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| 190 | die "\n";
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| 191 | }
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| 192 |
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| 193 | return bless $self, $class;
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| 194 | }
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| 195 |
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| 196 | sub get_default_process_exp {
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| 197 | my $self = shift (@_);
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| 198 |
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| 199 | return q^\.item$^;
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| 200 | }
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| 201 |
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| 202 | # want to block everything except the .item ones
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| 203 | # but instead we will block images and txt files
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| 204 | sub get_default_block_exp {
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| 205 | my $self = shift (@_);
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| 206 |
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| 207 | return q^(?i)(\.jpe?g|\.gif|\.png|\.tif?f|\.te?xt|~)$^
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| 208 | }
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| 209 | # Create the thumbnail and screenview images, and discover the Image's
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| 210 | # size, width, and height using the convert utility.
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| 211 | sub process_image {
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| 212 | my $self = shift (@_);
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| 213 | my $filename = shift (@_); # filename with full path
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| 214 | my $srcfile = shift (@_); # filename without path
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| 215 | my $doc_obj = shift (@_);
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| 216 | my $section = shift (@_); #the current section
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| 217 | my $rotate = shift (@_); # whether to rotate the image or not
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| 218 |
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| 219 | my $top=0;
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| 220 | if ($section eq $doc_obj->get_top_section()) {
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| 221 | $top=1;
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| 222 | }
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| 223 | my $verbosity = $self->{'verbosity'};
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| 224 | my $outhandle = $self->{'outhandle'};
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| 225 |
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| 226 | # check the filename is okay
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| 227 | return 0 if ($srcfile eq "" || $filename eq "");
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| 228 |
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| 229 | my $minimumsize = $self->{'minimumsize'};
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| 230 | if (defined $minimumsize && (-s $filename < $minimumsize)) {
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| 231 | print $outhandle "PagedImgPlug: \"$filename\" too small, skipping\n"
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| 232 | if ($verbosity > 1);
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| 233 | }
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| 234 |
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| 235 | # Convert the image to a new type (if required), and rotate if required.
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| 236 | my $converttotype = $self->{'converttotype'};
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| 237 | my $originalfilename = ""; # only set if we do a conversion
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| 238 | my $type = "unknown";
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| 239 | my $converted = 0;
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| 240 | my $rotated=0;
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| 241 | if ($converttotype ne "" && $filename !~ /$converttotype$/) {
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| 242 | $converted=1;
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| 243 | $originalfilename = $filename;
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| 244 | my $filehead = &util::get_tmp_filename();
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| 245 | $filename = $filehead . ".$converttotype";
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| 246 | $n = 1;
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| 247 | while (-e $filename) {
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| 248 | $filename = "$filehead$n\.$converttotype";
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| 249 | $n++;
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| 250 | }
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| 251 | $self->{'tmp_filename1'} = $filename;
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| 252 |
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| 253 | my $rotate_option = "";
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| 254 | if ($rotate eq "r") {
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| 255 | $rotate_option = "-rotate 180 ";
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| 256 | }
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| 257 |
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| 258 | my $command = "convert -verbose \"$originalfilename\" $rotate_option \"$filename\"";
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| 259 | print $outhandle "CONVERT: $command\n" if ($verbosity > 2);
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| 260 | my $result = '';
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| 261 | $result = `$command`;
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| 262 | print $outhandle "CONVERT RESULT = $result\n" if ($verbosity > 2);
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| 263 |
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| 264 | $type = $converttotype;
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| 265 | } elsif ($rotate eq "r") {
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| 266 | $rotated=1;
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| 267 | $originalfilename = $filename;
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| 268 | $filename = &util::get_tmp_filename();
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| 269 |
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| 270 | my $command = "convert \"$originalfilename\" -rotate 180 \"$filename\"";
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| 271 | print $outhandle "ROTATE: $command\n" if ($verbosity > 2);
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| 272 | my $result = '';
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| 273 | $result = `$command`;
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| 274 | print $outhandle "ROTATE RESULT = $result\n" if ($verbosity > 2);
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| 275 |
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| 276 | }
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| 277 |
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| 278 |
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| 279 | # Add the image metadata
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| 280 | my $file; # the new file name
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| 281 | my ($id) = $srcfile =~ /^([^\.]*)/; #the new file name without an extension
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| 282 | if ($converted) {
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| 283 | # we have converted the image
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| 284 | # add on the new extension
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| 285 | $file .= "$id.$converttotype";
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| 286 | } else {
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| 287 | $file = $srcfile;
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| 288 | }
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| 289 |
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| 290 | my $url =$file; # the new file name prepared for a url
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| 291 | my $srcurl = $srcfile;
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| 292 | $url =~ s/ /%20/g;
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| 293 | $srcurl =~ s/ /%20/g;
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| 294 |
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| 295 | $doc_obj->add_metadata ($section, "Image", $url);
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| 296 |
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| 297 | # Also want to set filename as 'Source' metadata to be
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| 298 | # consistent with other plugins
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| 299 | $doc_obj->add_metadata ($section, "Source", $srcurl);
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| 300 |
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| 301 | my ($image_type, $image_width, $image_height, $image_size)
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| 302 | = &identify($filename, $outhandle, $verbosity);
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| 303 |
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| 304 | $doc_obj->add_metadata ($section, "ImageType", $image_type);
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| 305 | $doc_obj->add_metadata ($section, "ImageWidth", $image_width);
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| 306 | $doc_obj->add_metadata ($section, "ImageHeight", $image_height);
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| 307 | $doc_obj->add_metadata ($section, "ImageSize", $image_size);
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| 308 |
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| 309 | if ($type eq "unknown" && $image_type) {
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| 310 | $type = $image_type;
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| 311 | }
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| 312 |
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| 313 | if ($top) {
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| 314 | $doc_obj->add_metadata ($section, "srclink",
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| 315 | "<a href=_httpcollection_/index/assoc/[assocfilepath]/[Image]>");
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| 316 | $doc_obj->add_metadata ($section, "srcicon", "<img src=_httpcollection_/index/assoc/[assocfilepath]/[Image]>");
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| 317 |
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| 318 | } else {
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| 319 | $doc_obj->add_metadata ($section, "srclink",
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| 320 | "<a href=_httpcollection_/index/assoc/[parent:assocfilepath]/[Image]>");
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| 321 | $doc_obj->add_metadata ($section, "srcicon", "<img src=_httpcollection_/index/assoc/[parent:assocfilepath]/[Image]>");
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| 322 |
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| 323 | }
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| 324 | $doc_obj->add_metadata ($section, "/srclink", "</a>");
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| 325 |
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| 326 |
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| 327 | # Add the image as an associated file
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| 328 | $doc_obj->associate_file($filename,$file,"image/$type",$section);
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| 329 | print $outhandle "associating file $filename as name $file\n" if ($verbosity > 2);
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| 330 |
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| 331 | if ($self->{'thumbnail'}) {
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| 332 | # Make the thumbnail image
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| 333 | my $thumbnailsize = $self->{'thumbnailsize'} || 100;
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| 334 | my $thumbnailtype = $self->{'thumbnailtype'} || 'gif';
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| 335 |
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| 336 | my $filehead = &util::get_tmp_filename();
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| 337 | my $thumbnailfile = $filehead . ".$thumbnailtype";
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| 338 | my $n=1;
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| 339 | while (-e $thumbnailfile) {
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| 340 | $thumbnailfile = $filehead . $n . ".$thumbnailtype";
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| 341 | $n++;
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| 342 | }
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| 343 |
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| 344 | $self->{'tmp_filename2'} = $thumbnailfile;
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| 345 |
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| 346 | # Generate the thumbnail with convert
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| 347 | my $command = "convert -verbose -geometry $thumbnailsize"
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| 348 | . "x$thumbnailsize \"$filename\" \"$thumbnailfile\"";
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| 349 | print $outhandle "THUMBNAIL: $command\n" if ($verbosity > 2);
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| 350 | my $result = '';
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| 351 | $result = `$command 2>&1` ;
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| 352 | print $outhandle "THUMB RESULT: $result\n" if ($verbosity > 2);
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| 353 |
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| 354 | # Add the thumbnail as an associated file ...
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| 355 | if (-e "$thumbnailfile") {
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| 356 | $doc_obj->associate_file("$thumbnailfile", $id."thumb.$thumbnailtype", "image/$thumbnailtype",$section);
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| 357 | $doc_obj->add_metadata ($section, "ThumbType", $thumbnailtype);
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| 358 | $doc_obj->add_metadata ($section, "Thumb", $id."thumb.$thumbnailtype");
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| 359 |
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| 360 | $doc_obj->add_metadata ($section, "thumbicon", "<img src=_httpcollection_/index/assoc/[parent:assocfilepath]/[Thumb] width=[ThumbWidth] height=[ThumbHeight]>");
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| 361 | }
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| 362 |
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| 363 | # Extract Thumnail metadata from convert output
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| 364 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
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| 365 | $doc_obj->add_metadata ($section, "ThumbWidth", $1);
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| 366 | $doc_obj->add_metadata ($section, "ThumbHeight", $2);
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| 367 | }
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| 368 | }
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| 369 | # Make a screen-sized version of the picture if requested
|
|---|
| 370 | if ($self->{'screenview'}) {
|
|---|
| 371 |
|
|---|
| 372 | # To do: if the actual image is smaller than the screenview size,
|
|---|
| 373 | # we should use the original !
|
|---|
| 374 |
|
|---|
| 375 | my $screenviewsize = $self->{'screenviewsize'} || 500;
|
|---|
| 376 | my $screenviewtype = $self->{'screenviewtype'} || 'jpeg';
|
|---|
| 377 | my $filehead = &util::get_tmp_filename();
|
|---|
| 378 | my $screenviewfilename = $filehead . ".$screenviewtype";
|
|---|
| 379 | my $n=1;
|
|---|
| 380 | while (-e $screenviewfilename) {
|
|---|
| 381 | $screenviewfilename = "$filehead$n\.$screenviewtype";
|
|---|
| 382 | $n++;
|
|---|
| 383 | }
|
|---|
| 384 | $self->{'tmp_filename3'} = $screenviewfilename;
|
|---|
| 385 |
|
|---|
| 386 | # make the screenview image
|
|---|
| 387 | my $command = "convert -verbose -geometry $screenviewsize"
|
|---|
| 388 | . "x$screenviewsize \"$filename\" \"$screenviewfilename\"";
|
|---|
| 389 | print $outhandle "SCREENVIEW: $command\n" if ($verbosity > 2);
|
|---|
| 390 | my $result = "";
|
|---|
| 391 | $result = `$command 2>&1` ;
|
|---|
| 392 | print $outhandle "SCREENVIEW RESULT: $result\n" if ($verbosity > 3);
|
|---|
| 393 |
|
|---|
| 394 | # get screenview dimensions, size and type
|
|---|
| 395 | if ($result =~ m/[0-9]+x[0-9]+=>([0-9]+)x([0-9]+)/) {
|
|---|
| 396 | $doc_obj->add_metadata ($section, "ScreenWidth", $1);
|
|---|
| 397 | $doc_obj->add_metadata ($section, "ScreenHeight", $2);
|
|---|
| 398 | }
|
|---|
| 399 |
|
|---|
| 400 | #add the screenview as an associated file ...
|
|---|
| 401 | if (-e "$screenviewfilename") {
|
|---|
| 402 | $doc_obj->associate_file("$screenviewfilename", $id."sv.$screenviewtype",
|
|---|
| 403 | "image/$screenviewtype",$section);
|
|---|
| 404 | print $outhandle "associating screen file $screenviewfilename as name $id sv.$screenviewtype\n" if ($verbosity > 2);
|
|---|
| 405 |
|
|---|
| 406 | $doc_obj->add_metadata ($section, "ScreenType", $screenviewtype);
|
|---|
| 407 | $doc_obj->add_metadata ($section, "Screen", $id."sv.$screenviewtype");
|
|---|
| 408 |
|
|---|
| 409 | if ($top) {
|
|---|
| 410 | $doc_obj->add_metadata ($section, "screenicon", "<img src=_httpcollection_/index/assoc/[assocfilepath]/[Screen] width=[ScreenWidth] height=[ScreenHeight]>");
|
|---|
| 411 | } else {
|
|---|
| 412 | $doc_obj->add_metadata ($section, "screenicon", "<img src=_httpcollection_/index/assoc/{If}{[parent:assocfilepath],[parent:assocfilepath],[assocfilepath]}/[Screen] width=[ScreenWidth] height=[ScreenHeight]>");
|
|---|
| 413 |
|
|---|
| 414 | }
|
|---|
| 415 | } else {
|
|---|
| 416 | print $outhandle "PagedImgPlug: couldn't find \"$screenviewfilename\"\n";
|
|---|
| 417 | }
|
|---|
| 418 | }
|
|---|
| 419 |
|
|---|
| 420 | return $type;
|
|---|
| 421 |
|
|---|
| 422 |
|
|---|
| 423 | }
|
|---|
| 424 |
|
|---|
| 425 |
|
|---|
| 426 |
|
|---|
| 427 | # Discover the characteristics of an image file with the ImageMagick
|
|---|
| 428 | # "identify" command.
|
|---|
| 429 |
|
|---|
| 430 | sub identify {
|
|---|
| 431 | my ($image, $outhandle, $verbosity) = @_;
|
|---|
| 432 |
|
|---|
| 433 | # Use the ImageMagick "identify" command to get the file specs
|
|---|
| 434 | my $command = "identify $image 2>&1";
|
|---|
| 435 | print $outhandle "$command\n" if ($verbosity > 2);
|
|---|
| 436 | my $result = '';
|
|---|
| 437 | $result = `$command`;
|
|---|
| 438 | print $outhandle "$result\n" if ($verbosity > 3);
|
|---|
| 439 |
|
|---|
| 440 | # Read the type, width, and height
|
|---|
| 441 | my $type = 'unknown';
|
|---|
| 442 | my $width = 'unknown';
|
|---|
| 443 | my $height = 'unknown';
|
|---|
| 444 |
|
|---|
| 445 | my $image_safe = quotemeta $image;
|
|---|
| 446 | if ($result =~ /^$image_safe (\w+) (\d+)x(\d+)/) {
|
|---|
| 447 | $type = $1;
|
|---|
| 448 | $width = $2;
|
|---|
| 449 | $height = $3;
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 | # Read the size
|
|---|
| 453 | my $size = "unknown";
|
|---|
| 454 | if ($result =~ m/^.* ([0-9]+)b/) {
|
|---|
| 455 | $size = $1;
|
|---|
| 456 | } elsif ($result =~ m/^.* ([0-9]+)kb/) {
|
|---|
| 457 | $size = 1024 * $1;
|
|---|
| 458 | }
|
|---|
| 459 |
|
|---|
| 460 | print $outhandle "file: $image:\t $type, $width, $height, $size\n"
|
|---|
| 461 | if ($verbosity > 3);
|
|---|
| 462 |
|
|---|
| 463 | # Return the specs
|
|---|
| 464 | return ($type, $width, $height, $size);
|
|---|
| 465 | }
|
|---|
| 466 |
|
|---|
| 467 |
|
|---|
| 468 | # The PagedImgPlug read() function. This function does all the right things
|
|---|
| 469 | # to make general options work for a given plugin. It calls the process()
|
|---|
| 470 | # function which does all the work specific to a plugin (like the old
|
|---|
| 471 | # read functions used to do). Most plugins should define their own
|
|---|
| 472 | # process() function and let this read() function keep control.
|
|---|
| 473 | #
|
|---|
| 474 | # PagedImgPlug overrides read() because there is no need to read the actual
|
|---|
| 475 | # text of the file in, because the contents of the file is not text...
|
|---|
| 476 | #
|
|---|
| 477 | # Return number of files processed, undef if can't process
|
|---|
| 478 | # Note that $base_dir might be "" and that $file might
|
|---|
| 479 | # include directories
|
|---|
| 480 |
|
|---|
| 481 | sub read {
|
|---|
| 482 | my $self = shift (@_);
|
|---|
| 483 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs) = @_;
|
|---|
| 484 | my $outhandle = $self->{'outhandle'};
|
|---|
| 485 |
|
|---|
| 486 | my $filename = &util::filename_cat($base_dir, $file);
|
|---|
| 487 | return 0 if $self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/;
|
|---|
| 488 | if ($filename !~ /$self->{'process_exp'}/ || !-f $filename) {
|
|---|
| 489 | return undef;
|
|---|
| 490 | }
|
|---|
| 491 |
|
|---|
| 492 | print $outhandle "PagedImgPlug processing \"$filename\"\n"
|
|---|
| 493 | if $self->{'verbosity'} > 1;
|
|---|
| 494 |
|
|---|
| 495 | my ($dir);
|
|---|
| 496 | ($dir, $file) = $filename =~ /^(.*?)([^\/\\]*)$/;
|
|---|
| 497 |
|
|---|
| 498 | #process the .item file
|
|---|
| 499 | my $doc_obj = $self->process_item($filename, $dir, $file, $processor);
|
|---|
| 500 |
|
|---|
| 501 | # include any metadata passed in from previous plugins
|
|---|
| 502 | # note that this metadata is associated with the top level section
|
|---|
| 503 | my $section = $doc_obj->get_top_section();
|
|---|
| 504 | $self->extra_metadata ($doc_obj, $section, $metadata);
|
|---|
| 505 |
|
|---|
| 506 | # do plugin specific processing of doc_obj
|
|---|
| 507 | return undef unless defined ($self->process (\$text, $pluginfo, $base_dir,
|
|---|
| 508 | $file, $metadata, $doc_obj));
|
|---|
| 509 |
|
|---|
| 510 | # do any automatic metadata extraction
|
|---|
| 511 | $self->auto_extract_metadata ($doc_obj);
|
|---|
| 512 |
|
|---|
| 513 | # process the document
|
|---|
| 514 | $processor->process($doc_obj);
|
|---|
| 515 |
|
|---|
| 516 | # clean up temporary files - we do this here instead of in
|
|---|
| 517 | # process_image becuase associated files aren't actually copied
|
|---|
| 518 | # until after process has been run.
|
|---|
| 519 | if (defined $self->{'tmp_filename1'} &&
|
|---|
| 520 | -e $self->{'tmp_filename1'}) {
|
|---|
| 521 | &util::rm($self->{'tmp_filename1'})
|
|---|
| 522 | }
|
|---|
| 523 | if (defined $self->{'tmp_filename2'} &&
|
|---|
| 524 | -e $self->{'tmp_filename2'}) {
|
|---|
| 525 | &util::rm($self->{'tmp_filename2'})
|
|---|
| 526 | }
|
|---|
| 527 | if (defined $self->{'tmp_filename3'} &&
|
|---|
| 528 | -e $self->{'tmp_filename3'}) {
|
|---|
| 529 | &util::rm($self->{'tmp_filename3'})
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | $self->{'num_processed'}++;
|
|---|
| 533 |
|
|---|
| 534 | return 1;
|
|---|
| 535 | }
|
|---|
| 536 |
|
|---|
| 537 | sub process_item {
|
|---|
| 538 | my $self = shift (@_);
|
|---|
| 539 | my ($filename, $dir, $file, $processor) = @_;
|
|---|
| 540 |
|
|---|
| 541 | my $doc_obj = new doc ($file, "indexed_doc");
|
|---|
| 542 | my $topsection = $doc_obj->get_top_section();
|
|---|
| 543 |
|
|---|
| 544 | if ($self->{'doctype'} eq 'paged') {
|
|---|
| 545 | # set the gsdlthistype metadata to Paged - this ensures this document will
|
|---|
| 546 | # be treated as a Paged doc, even if Titles are not numeric
|
|---|
| 547 |
|
|---|
| 548 | $doc_obj->set_utf8_metadata_element ($topsection, "gsdlthistype", "Paged");
|
|---|
| 549 | } else {
|
|---|
| 550 | $doc_obj->set_utf8_metadata_element ($topsection, "gsdlthistype", "Hierarchy");
|
|---|
| 551 | }
|
|---|
| 552 | open (ITEMFILE, $filename) || die "couldn't open $filename\n";
|
|---|
| 553 | my $line = "";
|
|---|
| 554 | my $num = 0;
|
|---|
| 555 | my $first = 1;
|
|---|
| 556 | while (defined ($line = <ITEMFILE>)) {
|
|---|
| 557 | next unless $line =~ /\w/;
|
|---|
| 558 | chomp $line;
|
|---|
| 559 | if ($line =~ /^<([^>]*)>(.*?)\s*$/) {
|
|---|
| 560 | $doc_obj->set_utf8_metadata_element ($topsection, $1, $2);
|
|---|
| 561 | $meta->{$1} = $2;
|
|---|
| 562 | } else {
|
|---|
| 563 | $num++;
|
|---|
| 564 | # line should be like page:imagefilename:textfilename:r - the r is optional -> means rotate the image 180 deg
|
|---|
| 565 | $line =~ s/^\s+//; #remove space at the front
|
|---|
| 566 | $line =~ s/\s+$//; #remove space at the end
|
|---|
| 567 | my ($pagenum, $imgname, $txtname, $rotate) = split /:/, $line;
|
|---|
| 568 |
|
|---|
| 569 | # create a new section for each image file
|
|---|
| 570 | # the first image may go in the top section or in the first child section (if headerpage is true)
|
|---|
| 571 | my $cursection;
|
|---|
| 572 | if ($first) {
|
|---|
| 573 | if ( $self->{'noheaderpage'}) {
|
|---|
| 574 | $cursection = $topsection;
|
|---|
| 575 | } else {
|
|---|
| 576 | $cursection = $doc_obj->insert_section($doc_obj->get_end_child($topsection));
|
|---|
| 577 | }
|
|---|
| 578 | $first=0;
|
|---|
| 579 | } else {
|
|---|
| 580 | $cursection = $doc_obj->insert_section($doc_obj->get_end_child($topsection));
|
|---|
| 581 | }
|
|---|
| 582 | # the page number becomes the Title
|
|---|
| 583 | $doc_obj->set_utf8_metadata_element($cursection, 'Title', $pagenum);
|
|---|
| 584 | # process the image for this page
|
|---|
| 585 | my $result = $self->process_image($dir.$imgname, $imgname, $doc_obj, $cursection, $rotate);
|
|---|
| 586 |
|
|---|
| 587 | if (!defined $result)
|
|---|
| 588 | {
|
|---|
| 589 | print "PagedImgPlug: couldn't process image \"$dir.$imgname\" for item \"$filename\"\n";
|
|---|
| 590 | }
|
|---|
| 591 |
|
|---|
| 592 | # process the text file if one is there
|
|---|
| 593 | if (defined $txtname && $txtname ne "") {
|
|---|
| 594 | $result = undef;
|
|---|
| 595 | $result = $self->process_text ($dir.$txtname, $txtname, $doc_obj, $cursection);
|
|---|
| 596 | if (!defined $result) {
|
|---|
| 597 | print "PagedImgPlug: couldn't process text file \"$dir.$txtname\" for item \"$filename\"\n";
|
|---|
| 598 | }
|
|---|
| 599 | } else {
|
|---|
| 600 | # otherwise add in some dummy text
|
|---|
| 601 | $doc_obj->add_text($cursection, "Dummy text to sidestep display bug");
|
|---|
| 602 | }
|
|---|
| 603 | }
|
|---|
| 604 | }
|
|---|
| 605 |
|
|---|
| 606 | close ITEMFILE;
|
|---|
| 607 |
|
|---|
| 608 | $file =~ s/\.item//i;
|
|---|
| 609 | #use the name of the .item file as the OID
|
|---|
| 610 | $doc_obj->set_OID ($file);
|
|---|
| 611 | # add numpages metadata
|
|---|
| 612 | $doc_obj->set_utf8_metadata_element ($topsection, 'NumPages', "$num");
|
|---|
| 613 | return $doc_obj;
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | sub process_text {
|
|---|
| 617 | my $self = shift (@_);
|
|---|
| 618 | my ($fullpath, $file, $doc_obj, $cursection) = @_;
|
|---|
| 619 |
|
|---|
| 620 | # Do encoding stuff
|
|---|
| 621 | my ($language, $encoding) = $self->textcat_get_language_encoding ($fullpath);
|
|---|
| 622 |
|
|---|
| 623 | my $text="";
|
|---|
| 624 | &BasPlug::read_file($self, $fullpath, $encoding, $language, \$text);
|
|---|
| 625 | if (!length ($text)) {
|
|---|
| 626 | my $plugin_name = ref ($self);
|
|---|
| 627 | print "PagedImgPlug: ERROR: $fullpath contains no text\n" if $self->{'verbosity'};
|
|---|
| 628 | return 0;
|
|---|
| 629 | }
|
|---|
| 630 |
|
|---|
| 631 | # we need to escape the escape character, or else mg will convert into
|
|---|
| 632 | # eg literal newlines, instead of leaving the text as '\n'
|
|---|
| 633 | $text =~ s/\\/\\\\/g; # macro language
|
|---|
| 634 | $text =~ s/_/\\_/g; # macro language
|
|---|
| 635 | $text =~ s/</</g;
|
|---|
| 636 | $text =~ s/>/>/g;
|
|---|
| 637 |
|
|---|
| 638 | # insert preformat tags and add text to document object
|
|---|
| 639 | $doc_obj->add_utf8_text($cursection, "<pre>\n$text\n</pre>");
|
|---|
| 640 |
|
|---|
| 641 | return 1;
|
|---|
| 642 | }
|
|---|
| 643 |
|
|---|
| 644 | # do plugin specific processing of doc_obj
|
|---|
| 645 | sub process {
|
|---|
| 646 | my $self = shift (@_);
|
|---|
| 647 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj) = @_;
|
|---|
| 648 | my $outhandle = $self->{'outhandle'};
|
|---|
| 649 |
|
|---|
| 650 | return 1;
|
|---|
| 651 | }
|
|---|
| 652 |
|
|---|
| 653 | 1;
|
|---|
| 654 |
|
|---|
| 655 |
|
|---|
| 656 |
|
|---|
| 657 |
|
|---|
| 658 |
|
|---|
| 659 |
|
|---|
| 660 |
|
|---|
| 661 |
|
|---|
| 662 |
|
|---|
| 663 |
|
|---|
| 664 |
|
|---|
