| 1 | ###########################################################################
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| 2 | #
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| 3 | # HTMLPlugin.pm -- basic html plugin
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| 4 | #
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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 | #
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| 28 | # Note that this plugin handles frames only in a very simple way
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| 29 | # i.e. each frame is treated as a separate document. This means
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| 30 | # search results will contain links to individual frames rather
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| 31 | # than linking to the top level frameset.
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| 32 | # There may also be some problems caused by the _parent target
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| 33 | # (it's removed by this plugin)
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| 34 | #
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| 35 |
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| 36 | package HTMLPlugin;
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| 37 |
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| 38 | use ReadTextFile;
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| 39 | use HBPlugin;
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| 40 | use ghtml;
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| 41 | use unicode;
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| 42 | use util;
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| 43 | use XMLParser;
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| 44 |
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| 45 | use Image::Size;
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| 46 | use File::Copy;
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| 47 |
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| 48 | sub BEGIN {
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| 49 | @HTMLPlugin::ISA = ('ReadTextFile', 'HBPlugin');
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| 50 | }
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| 51 |
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| 52 | use strict; # every perl program should have this!
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| 53 | no strict 'refs'; # make an exception so we can use variables as filehandles
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| 54 |
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| 55 | my $arguments =
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| 56 | [ { 'name' => "process_exp",
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| 57 | 'desc' => "{BasePlugin.process_exp}",
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| 58 | 'type' => "regexp",
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| 59 | 'deft' => &get_default_process_exp() },
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| 60 | { 'name' => "block_exp",
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| 61 | 'desc' => "{BasePlugin.block_exp}",
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| 62 | 'type' => 'regexp',
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| 63 | 'deft' => &get_default_block_exp() },
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| 64 | { 'name' => "nolinks",
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| 65 | 'desc' => "{HTMLPlugin.nolinks}",
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| 66 | 'type' => "flag" },
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| 67 | { 'name' => "keep_head",
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| 68 | 'desc' => "{HTMLPlugin.keep_head}",
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| 69 | 'type' => "flag" },
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| 70 | { 'name' => "no_metadata",
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| 71 | 'desc' => "{HTMLPlugin.no_metadata}",
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| 72 | 'type' => "flag" },
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| 73 | { 'name' => "metadata_fields",
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| 74 | 'desc' => "{HTMLPlugin.metadata_fields}",
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| 75 | 'type' => "string",
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| 76 | 'deft' => "Title" },
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| 77 | { 'name' => "hunt_creator_metadata",
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| 78 | 'desc' => "{HTMLPlugin.hunt_creator_metadata}",
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| 79 | 'type' => "flag" },
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| 80 | { 'name' => "file_is_url",
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| 81 | 'desc' => "{HTMLPlugin.file_is_url}",
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| 82 | 'type' => "flag" },
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| 83 | { 'name' => "assoc_files",
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| 84 | 'desc' => "{HTMLPlugin.assoc_files}",
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| 85 | 'type' => "regexp",
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| 86 | 'deft' => &get_default_block_exp() },
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| 87 | { 'name' => "rename_assoc_files",
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| 88 | 'desc' => "{HTMLPlugin.rename_assoc_files}",
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| 89 | 'type' => "flag" },
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| 90 | { 'name' => "title_sub",
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| 91 | 'desc' => "{HTMLPlugin.title_sub}",
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| 92 | 'type' => "string",
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| 93 | 'deft' => "" },
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| 94 | { 'name' => "description_tags",
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| 95 | 'desc' => "{HTMLPlugin.description_tags}",
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| 96 | 'type' => "flag" },
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| 97 | # retain this for backward compatibility (w3mir option was replaced by
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| 98 | # file_is_url)
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| 99 | { 'name' => "w3mir",
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| 100 | # 'desc' => "{HTMLPlugin.w3mir}",
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| 101 | 'type' => "flag",
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| 102 | 'hiddengli' => "yes"},
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| 103 | { 'name' => "no_strip_metadata_html",
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| 104 | 'desc' => "{HTMLPlugin.no_strip_metadata_html}",
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| 105 | 'type' => "string",
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| 106 | 'deft' => "",
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| 107 | 'reqd' => "no"},
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| 108 | { 'name' => "sectionalise_using_h_tags",
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| 109 | 'desc' => "{HTMLPlugin.sectionalise_using_h_tags}",
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| 110 | 'type' => "flag" },
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| 111 | { 'name' => "use_realistic_book",
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| 112 | 'desc' => "{HTMLPlugin.tidy_html}",
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| 113 | 'type' => "flag"},
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| 114 | { 'name' => "old_style_HDL",
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| 115 | 'desc' => "{HTMLPlugin.old_style_HDL}",
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| 116 | 'type' => "flag"}
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| 117 | ];
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| 118 |
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| 119 | my $options = { 'name' => "HTMLPlugin",
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| 120 | 'desc' => "{HTMLPlugin.desc}",
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| 121 | 'abstract' => "no",
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| 122 | 'inherits' => "yes",
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| 123 | 'args' => $arguments };
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| 124 |
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| 125 |
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| 126 | sub HB_read_html_file {
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| 127 | my $self = shift (@_);
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| 128 | my ($htmlfile, $text) = @_;
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| 129 |
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| 130 | # load in the file
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| 131 | if (!open (FILE, $htmlfile)) {
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| 132 | print STDERR "ERROR - could not open $htmlfile\n";
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| 133 | return;
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| 134 | }
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| 135 |
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| 136 | my $foundbody = 0;
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| 137 | $self->HB_gettext (\$foundbody, $text, "FILE");
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| 138 | close FILE;
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| 139 |
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| 140 | # just in case there was no <body> tag
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| 141 | if (!$foundbody) {
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| 142 | $foundbody = 1;
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| 143 | open (FILE, $htmlfile) || return;
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| 144 | $self->HB_gettext (\$foundbody, $text, "FILE");
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| 145 | close FILE;
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| 146 | }
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| 147 | # text is in utf8
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| 148 | }
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| 149 |
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| 150 | # converts the text to utf8, as ghtml does that for é etc.
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| 151 | sub HB_gettext {
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| 152 | my $self = shift (@_);
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| 153 | my ($foundbody, $text, $handle) = @_;
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| 154 |
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| 155 | my $line = "";
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| 156 | while (defined ($line = <$handle>)) {
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| 157 | # look for body tag
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| 158 | if (!$$foundbody) {
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| 159 | if ($line =~ s/^.*<body[^>]*>//i) {
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| 160 | $$foundbody = 1;
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| 161 | } else {
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| 162 | next;
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| 163 | }
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| 164 | }
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| 165 |
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| 166 | # check for symbol fonts
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| 167 | if ($line =~ /<font [^>]*?face\s*=\s*\"?(\w+)\"?/i) {
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| 168 | my $font = $1;
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| 169 | print STDERR "HBPlug::HB_gettext - warning removed font $font\n"
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| 170 | if ($font !~ /^arial$/i);
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| 171 | }
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| 172 |
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| 173 | $$text .= $line;
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| 174 | }
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| 175 |
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| 176 | if ($self->{'input_encoding'} eq "iso_8859_1") {
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| 177 | # convert to utf-8
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| 178 | $$text=&unicode::unicode2utf8(&unicode::convert2unicode("iso_8859_1", $text));
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| 179 | }
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| 180 | # convert any alphanumeric character entities to their utf-8
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| 181 | # equivalent for indexing purposes
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| 182 | #&ghtml::convertcharentities ($$text);
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| 183 |
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| 184 | $$text =~ s/\s+/ /g; # remove \n's
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| 185 | }
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| 186 |
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| 187 | sub HB_clean_section {
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| 188 | my $self = shift (@_);
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| 189 | my ($section) = @_;
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| 190 |
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| 191 | # remove tags without a starting tag from the section
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| 192 | my ($tag, $tagstart);
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| 193 | while ($section =~ /<\/([^>]{1,10})>/) {
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| 194 | $tag = $1;
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| 195 | $tagstart = index($section, "<$tag");
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| 196 | last if (($tagstart >= 0) && ($tagstart < index($section, "<\/$tag")));
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| 197 | $section =~ s/<\/$tag>//;
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| 198 | }
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| 199 |
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| 200 | # remove extra paragraph tags
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| 201 | while ($section =~ s/<p\b[^>]*>\s*<p\b/<p/ig) {}
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| 202 |
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| 203 | # remove extra stuff at the end of the section
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| 204 | while ($section =~ s/(<u>|<i>|<b>|<p\b[^>]*>| |\s)$//i) {}
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| 205 |
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| 206 | # add a newline at the beginning of each paragraph
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| 207 | $section =~ s/(.)\s*<p\b/$1\n\n<p/gi;
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| 208 |
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| 209 | # add a newline every 80 characters at a word boundary
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| 210 | # Note: this regular expression puts a line feed before
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| 211 | # the last word in each section, even when it is not
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| 212 | # needed.
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| 213 | $section =~ s/(.{1,80})\s/$1\n/g;
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| 214 |
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| 215 | # fix up the image links
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| 216 | $section =~ s/<img[^>]*?src=\"?([^\">]+)\"?[^>]*>/
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| 217 | <center><img src=\"$1\" \/><\/center><br\/>/ig;
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| 218 | $section =~ s/<<I>>\s*([^\.]+\.(png|jpg|gif))/
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| 219 | <center><img src=\"$1\" \/><\/center><br\/>/ig;
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| 220 |
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| 221 | return $section;
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| 222 | }
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| 223 |
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| 224 | # Will convert the oldHDL format to the new HDL format (using the Section tag)
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| 225 | sub convert_to_newHDLformat
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| 226 | {
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| 227 | my $self = shift (@_);
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| 228 | my ($file,$cnfile) = @_;
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| 229 | my $input_filename = $file;
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| 230 | my $tmp_filename = $cnfile;
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| 231 |
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| 232 | # write HTML tmp file with new HDL format
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| 233 | open (PROD, ">$tmp_filename") || die("Error Writing to File: $tmp_filename $!");
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| 234 |
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| 235 | # read in the file and do basic html cleaning (removing header etc)
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| 236 | my $html = "";
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| 237 | $self->HB_read_html_file ($input_filename, \$html);
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| 238 |
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| 239 | # process the file one section at a time
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| 240 | my $curtoclevel = 1;
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| 241 | my $firstsection = 1;
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| 242 | my $toclevel = 0;
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| 243 | while (length ($html) > 0) {
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| 244 | if ($html =~ s/^.*?(?:<p\b[^>]*>)?((<b>|<i>|<u>|\s)*)<<TOC(\d+)>>\s*(.*?)<p\b/<p/i) {
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| 245 | $toclevel = $3;
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| 246 | my $title = $4;
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| 247 | my $sectiontext = "";
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| 248 | if ($html =~ s/^(.*?)((?:<p\b[^>]*>)?((<b>|<i>|<u>|\s)*)<<TOC\d+>>)/$2/i) {
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| 249 | $sectiontext = $1;
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| 250 | } else {
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| 251 | $sectiontext = $html;
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| 252 | $html = "";
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| 253 | }
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| 254 |
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| 255 | # remove tags and extra spaces from the title
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| 256 | $title =~ s/<\/?[^>]+>//g;
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| 257 | $title =~ s/^\s+|\s+$//g;
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| 258 |
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| 259 | # close any sections below the current level and
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| 260 | # create a new section (special case for the firstsection)
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| 261 | print PROD "<!--\n";
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| 262 | while (($curtoclevel > $toclevel) ||
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| 263 | (!$firstsection && $curtoclevel == $toclevel)) {
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| 264 | $curtoclevel--;
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| 265 | print PROD "</Section>\n";
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| 266 | }
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| 267 | if ($curtoclevel+1 < $toclevel) {
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| 268 | print STDERR "WARNING - jump in toc levels in $input_filename " .
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| 269 | "from $curtoclevel to $toclevel\n";
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| 270 | }
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| 271 | while ($curtoclevel < $toclevel) {
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| 272 | $curtoclevel++;
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| 273 | }
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| 274 |
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| 275 | if ($curtoclevel == 1) {
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| 276 | # add the header tag
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| 277 | print PROD "-->\n";
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| 278 | print PROD "<HTML>\n<HEAD>\n<TITLE>$title</TITLE>\n</HEAD>\n<BODY>\n";
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| 279 | print PROD "<!--\n";
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| 280 | }
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| 281 |
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| 282 | print PROD "<Section>\n\t<Description>\n\t\t<Metadata name=\"Title\">$title</Metadata>\n\t</Description>\n";
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| 283 |
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| 284 | print PROD "-->\n";
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| 285 |
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| 286 | # clean up the section html
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| 287 | $sectiontext = $self->HB_clean_section($sectiontext);
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| 288 |
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| 289 | print PROD "$sectiontext\n";
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| 290 |
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| 291 | } else {
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| 292 | print STDERR "WARNING - leftover text\n" , $self->shorten($html),
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| 293 | "\nin $input_filename\n";
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| 294 | last;
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| 295 | }
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| 296 | $firstsection = 0;
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| 297 | }
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| 298 |
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| 299 | print PROD "<!--\n";
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| 300 | while ($curtoclevel > 0) {
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| 301 | $curtoclevel--;
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| 302 | print PROD "</Section>\n";
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| 303 | }
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| 304 | print PROD "-->\n";
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| 305 |
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| 306 | close (PROD) || die("Error Closing File: $tmp_filename $!");
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| 307 |
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| 308 | return $tmp_filename;
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| 309 | }
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| 310 |
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| 311 | sub shorten {
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| 312 | my $self = shift (@_);
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| 313 | my ($text) = @_;
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| 314 |
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| 315 | return "\"$text\"" if (length($text) < 100);
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| 316 |
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| 317 | return "\"" . substr ($text, 0, 50) . "\" ... \"" .
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| 318 | substr ($text, length($text)-50) . "\"";
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| 319 | }
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| 320 |
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| 321 | sub convert_tidy_or_oldHDL_file
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| 322 | {
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| 323 | my $self = shift (@_);
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| 324 | my ($file) = @_;
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| 325 | my $input_filename = $file;
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| 326 |
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| 327 | if (-d $input_filename)
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| 328 | {
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| 329 | return $input_filename;
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| 330 | }
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| 331 |
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| 332 | # get the input filename
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| 333 | my ($tailname, $dirname, $suffix) = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
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| 334 | my $base_dirname = $dirname;
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| 335 | $suffix = lc($suffix);
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| 336 |
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| 337 | # derive tmp filename from input filename
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| 338 | # Remove any white space from filename -- no risk of name collision, and
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| 339 | # makes later conversion by utils simpler. Leave spaces in path...
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| 340 | # tidy up the filename with space, dot, hyphen between
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| 341 | $tailname =~ s/\s+//g;
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| 342 | $tailname =~ s/\.+//g;
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| 343 | $tailname =~ s/\-+//g;
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| 344 | # convert to utf-8 otherwise we have problems with the doc.xml file
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| 345 | # later on
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| 346 | &unicode::ensure_utf8(\$tailname);
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| 347 |
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| 348 | # softlink to collection tmp dir
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| 349 | my $tmp_dirname = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}, "tidytmp");
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| 350 | &util::mk_dir($tmp_dirname) if (!-e $tmp_dirname);
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| 351 |
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| 352 | my $test_dirname = "";
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| 353 | my $f_separator = &util::get_os_dirsep();
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| 354 |
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| 355 | if ($dirname =~ /import$f_separator/)
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| 356 | {
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| 357 | $test_dirname = $'; #'
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| 358 |
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| 359 | #print STDERR "init $'\n";
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| 360 |
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| 361 | while ($test_dirname =~ /[$f_separator]/)
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| 362 | {
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| 363 | my $folderdirname = $`;
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| 364 | $tmp_dirname = &util::filename_cat($tmp_dirname,$folderdirname);
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| 365 | &util::mk_dir($tmp_dirname) if (!-e $tmp_dirname);
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| 366 | $test_dirname = $'; #'
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| 367 | }
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| 368 | }
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| 369 |
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| 370 | my $tmp_filename = &util::filename_cat($tmp_dirname, "$tailname$suffix");
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| 371 |
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| 372 | # tidy or convert the input file if it is a HTML-like file or it is accepted by the process_exp
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| 373 | if (($suffix eq ".htm") || ($suffix eq ".html") || ($suffix eq ".shtml"))
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| 374 | {
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| 375 | #convert the input file to a new style HDL
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| 376 | my $hdl_output_filename = $input_filename;
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| 377 | if ($self->{'old_style_HDL'})
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| 378 | {
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| 379 | $hdl_output_filename = &util::filename_cat($tmp_dirname, "$tailname$suffix");
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| 380 | $hdl_output_filename = $self->convert_to_newHDLformat($input_filename,$hdl_output_filename);
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| 381 | }
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| 382 |
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| 383 | #just for checking copy all other file from the base dir to tmp dir if it is not exists
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| 384 | opendir(DIR,$base_dirname) or die "Can't open base directory : $base_dirname!";
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| 385 | my @files = grep {!/^\.+$/} readdir(DIR);
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| 386 | close(DIR);
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| 387 |
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| 388 | foreach my $file (@files)
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| 389 | {
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| 390 | my $src_file = &util::filename_cat($base_dirname,$file);
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| 391 | my $dest_file = &util::filename_cat($tmp_dirname,$file);
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| 392 | if ((!-e $dest_file) && (!-d $src_file))
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| 393 | {
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| 394 | # just copy the original file back to the tmp directory
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| 395 | copy($src_file,$dest_file) or die "Can't copy file $src_file to $dest_file $!";
|
|---|
| 396 | }
|
|---|
| 397 | }
|
|---|
| 398 |
|
|---|
| 399 | # tidy the input file
|
|---|
| 400 | my $tidy_output_filename = $hdl_output_filename;
|
|---|
| 401 | if ($self->{'tidy_html'})
|
|---|
| 402 | {
|
|---|
| 403 | $tidy_output_filename = &util::filename_cat($tmp_dirname, "$tailname$suffix");
|
|---|
| 404 | $tidy_output_filename = $self->tmp_tidy_file($hdl_output_filename,$tidy_output_filename);
|
|---|
| 405 | }
|
|---|
| 406 | $tmp_filename = $tidy_output_filename;
|
|---|
| 407 | }
|
|---|
| 408 | else
|
|---|
| 409 | {
|
|---|
| 410 | if (!-e $tmp_filename)
|
|---|
| 411 | {
|
|---|
| 412 | # just copy the original file back to the tmp directory
|
|---|
| 413 | copy($input_filename,$tmp_filename) or die "Can't copy file $input_filename to $tmp_filename $!";
|
|---|
| 414 | }
|
|---|
| 415 | }
|
|---|
| 416 |
|
|---|
| 417 | return $tmp_filename;
|
|---|
| 418 | }
|
|---|
| 419 |
|
|---|
| 420 |
|
|---|
| 421 | # Will make the html input file as a proper XML file with removed font tag and
|
|---|
| 422 | # image size added to the img tag.
|
|---|
| 423 | # The tidying process takes place in a collection specific 'tmp' directory so
|
|---|
| 424 | # that we don't accidentally damage the input.
|
|---|
| 425 | sub tmp_tidy_file
|
|---|
| 426 | {
|
|---|
| 427 | my $self = shift (@_);
|
|---|
| 428 | my ($file,$cnfile) = @_;
|
|---|
| 429 | my $input_filename = $file;
|
|---|
| 430 | my $tmp_filename = $cnfile;
|
|---|
| 431 |
|
|---|
| 432 | # get the input filename
|
|---|
| 433 | my ($tailname, $dirname, $suffix) = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
|
|---|
| 434 |
|
|---|
| 435 | require HTML::TokeParser::Simple;
|
|---|
| 436 |
|
|---|
| 437 | # create HTML parser to decode the input file
|
|---|
| 438 | my $parser = HTML::TokeParser::Simple->new($input_filename);
|
|---|
| 439 |
|
|---|
| 440 | # write HTML tmp file without the font tag and image size are added to the img tag
|
|---|
| 441 | open (PROD, ">$tmp_filename") || die("Error Writing to File: $tmp_filename $!");
|
|---|
| 442 | while (my $token = $parser->get_token())
|
|---|
| 443 | {
|
|---|
| 444 | # is it an img tag
|
|---|
| 445 | if ($token->is_start_tag('img'))
|
|---|
| 446 | {
|
|---|
| 447 | # get the attributes
|
|---|
| 448 | my $attr = $token->return_attr;
|
|---|
| 449 |
|
|---|
| 450 | # get the full path to the image
|
|---|
| 451 | my $img_file = &util::filename_cat($dirname,$attr->{src});
|
|---|
| 452 |
|
|---|
| 453 | # set the width and height attribute
|
|---|
| 454 | ($attr->{width}, $attr->{height}) = imgsize($img_file);
|
|---|
| 455 |
|
|---|
| 456 | # recreate the tag
|
|---|
| 457 | print PROD "<img";
|
|---|
| 458 | print PROD map { qq { $_="$attr->{$_}"} } keys %$attr;
|
|---|
| 459 | print PROD ">";
|
|---|
| 460 | }
|
|---|
| 461 | # is it a font tag
|
|---|
| 462 | else
|
|---|
| 463 | {
|
|---|
| 464 | if (($token->is_start_tag('font')) || ($token->is_end_tag('font')))
|
|---|
| 465 | {
|
|---|
| 466 | # remove font tag
|
|---|
| 467 | print PROD "";
|
|---|
| 468 | }
|
|---|
| 469 | else
|
|---|
| 470 | {
|
|---|
| 471 | # print without changes
|
|---|
| 472 | print PROD $token->as_is;
|
|---|
| 473 | }
|
|---|
| 474 | }
|
|---|
| 475 | }
|
|---|
| 476 | close (PROD) || die("Error Closing File: $tmp_filename $!");
|
|---|
| 477 |
|
|---|
| 478 | # run html-tidy on the tmp file to make it a proper XML file
|
|---|
| 479 | my $tidyfile = `tidy -utf8 -wrap 0 -asxml $tmp_filename`;
|
|---|
| 480 |
|
|---|
| 481 | # write result back to the tmp file
|
|---|
| 482 | open (PROD, ">$tmp_filename") || die("Error Writing to File: $tmp_filename $!");
|
|---|
| 483 | print PROD $tidyfile;
|
|---|
| 484 | close (PROD) || die("Error Closing File: $tmp_filename $!");
|
|---|
| 485 |
|
|---|
| 486 | # return the output filename
|
|---|
| 487 | return $tmp_filename;
|
|---|
| 488 | }
|
|---|
| 489 |
|
|---|
| 490 | sub read_into_doc_obj
|
|---|
| 491 | {
|
|---|
| 492 | my $self = shift (@_);
|
|---|
| 493 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
|
|---|
| 494 |
|
|---|
| 495 | # get the input file
|
|---|
| 496 | my $input_filename = $file;
|
|---|
| 497 | my ($tailname, $dirname, $suffix) = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
|
|---|
| 498 | $suffix = lc($suffix);
|
|---|
| 499 |
|
|---|
| 500 | if (($self->{'tidy_html'}) || ($self->{'old_style_HDL'}))
|
|---|
| 501 | {
|
|---|
| 502 | # because the document has to be sectionalized set the description tags
|
|---|
| 503 | $self->{'description_tags'} = 1;
|
|---|
| 504 |
|
|---|
| 505 | # set the file to be tidied
|
|---|
| 506 | $input_filename = &util::filename_cat($base_dir,$file) if $base_dir =~ /\w/;
|
|---|
| 507 |
|
|---|
| 508 | # get the tidied file
|
|---|
| 509 | #my $tidy_filename = $self->tmp_tidy_file($input_filename);
|
|---|
| 510 | my $tidy_filename = $self->convert_tidy_or_oldHDL_file($input_filename);
|
|---|
| 511 |
|
|---|
| 512 | # derive tmp filename from input filename
|
|---|
| 513 | my ($tailname, $dirname, $suffix) = &File::Basename::fileparse($tidy_filename, "\\.[^\\.]+\$");
|
|---|
| 514 |
|
|---|
| 515 | # set the new input file and base_dir to be from the tidied file
|
|---|
| 516 | $file = "$tailname$suffix";
|
|---|
| 517 | $base_dir = $dirname;
|
|---|
| 518 | }
|
|---|
| 519 |
|
|---|
| 520 | # call the parent read_into_doc_obj
|
|---|
| 521 | my ($process_status,$doc_obj) = $self->SUPER::read_into_doc_obj($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli);
|
|---|
| 522 |
|
|---|
| 523 | return ($process_status,$doc_obj);
|
|---|
| 524 | }
|
|---|
| 525 |
|
|---|
| 526 | sub new {
|
|---|
| 527 | my ($class) = shift (@_);
|
|---|
| 528 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
|
|---|
| 529 | push(@$pluginlist, $class);
|
|---|
| 530 |
|
|---|
| 531 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
|
|---|
| 532 | push(@{$hashArgOptLists->{"OptList"}},$options);
|
|---|
| 533 |
|
|---|
| 534 |
|
|---|
| 535 | my $self = new ReadTextFile($pluginlist,$inputargs,$hashArgOptLists);
|
|---|
| 536 |
|
|---|
| 537 | if ($self->{'w3mir'}) {
|
|---|
| 538 | $self->{'file_is_url'} = 1;
|
|---|
| 539 | }
|
|---|
| 540 | $self->{'aux_files'} = {};
|
|---|
| 541 | $self->{'dir_num'} = 0;
|
|---|
| 542 | $self->{'file_num'} = 0;
|
|---|
| 543 |
|
|---|
| 544 | return bless $self, $class;
|
|---|
| 545 | }
|
|---|
| 546 |
|
|---|
| 547 | # may want to use (?i)\.(gif|jpe?g|jpe|png|css|js(?:@.*)?)$
|
|---|
| 548 | # if have eg <script language="javascript" src="img/lib.js@123">
|
|---|
| 549 | sub get_default_block_exp {
|
|---|
| 550 | my $self = shift (@_);
|
|---|
| 551 |
|
|---|
| 552 | #return q^(?i)\.(gif|jpe?g|jpe|jpg|png|css)$^;
|
|---|
| 553 | return "";
|
|---|
| 554 | }
|
|---|
| 555 |
|
|---|
| 556 | sub get_default_process_exp {
|
|---|
| 557 | my $self = shift (@_);
|
|---|
| 558 |
|
|---|
| 559 | # the last option is an attempt to encode the concept of an html query ...
|
|---|
| 560 | return q^(?i)(\.html?|\.shtml|\.shm|\.asp|\.php\d?|\.cgi|.+\?.+=.*)$^;
|
|---|
| 561 | }
|
|---|
| 562 |
|
|---|
| 563 | sub store_block_files
|
|---|
| 564 | {
|
|---|
| 565 | my $self =shift (@_);
|
|---|
| 566 | my ($filename_full_path, $block_hash) = @_;
|
|---|
| 567 |
|
|---|
| 568 | my $html_fname = $filename_full_path;
|
|---|
| 569 | my @file_blocks;
|
|---|
| 570 |
|
|---|
| 571 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename_full_path);
|
|---|
| 572 |
|
|---|
| 573 | # read in file ($text will be in utf8)
|
|---|
| 574 | my $text = "";
|
|---|
| 575 | $self->read_file ($filename_full_path, $encoding, $language, \$text);
|
|---|
| 576 | my $textref = \$text;
|
|---|
| 577 | my $opencom = '(?:<!--|<!(?:—|—|--))';
|
|---|
| 578 | my $closecom = '(?:-->|(?:—|—|--)>)';
|
|---|
| 579 | $$textref =~ s/$opencom(.*?)$closecom//gs;
|
|---|
| 580 |
|
|---|
| 581 | my $attval = "\\\"[^\\\"]+\\\"|[^\\s>]+";
|
|---|
| 582 | my @img_matches = ($$textref =~ m/<img[^>]*?src\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 583 | my @usemap_matches = ($$textref =~ m/<img[^>]*?usemap\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 584 | my @link_matches = ($$textref =~ m/<link[^>]*?href\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 585 | my @embed_matches = ($$textref =~ m/<embed[^>]*?src\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 586 | my @tabbg_matches = ($$textref =~ m/<(?:table|tr|td)[^>]*?background\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 587 | my @script_matches = ($$textref =~ m/<script[^>]*?src\s*=\s*($attval)[^>]*>/igs);
|
|---|
| 588 |
|
|---|
| 589 | foreach my $link (@img_matches, @usemap_matches, @link_matches, @embed_matches, @tabbg_matches, @script_matches) {
|
|---|
| 590 |
|
|---|
| 591 | # remove quotes from link at start and end if necessary
|
|---|
| 592 | if ($link=~/^\"/) {
|
|---|
| 593 | $link=~s/^\"//;
|
|---|
| 594 | $link=~s/\"$//;
|
|---|
| 595 | }
|
|---|
| 596 |
|
|---|
| 597 | $link =~ s/\#.*$//s; # remove any anchor names, e.g. foo.html#name becomes foo.html
|
|---|
| 598 | # some links may just be anchor names
|
|---|
| 599 | next unless ($link =~ /\S+/);
|
|---|
| 600 |
|
|---|
| 601 | if ($link !~ m@^/@ && $link !~ m/^([A-Z]:?)\\/) {
|
|---|
| 602 | # Turn relative file path into full path
|
|---|
| 603 | my $dirname = &File::Basename::dirname($filename_full_path);
|
|---|
| 604 | $link = &util::filename_cat($dirname, $link);
|
|---|
| 605 | }
|
|---|
| 606 | $link = $self->eval_dir_dots($link);
|
|---|
| 607 |
|
|---|
| 608 | # Replace %XX's in URL with decoded value if required.
|
|---|
| 609 | # Note that the filename may include the %XX in some situations
|
|---|
| 610 | if ($link =~ m/\%[A-F0-9]{2}/i) {
|
|---|
| 611 | if (!-e $link) {
|
|---|
| 612 | $link =~ s/\%([A-F0-9]{2})/pack('C', hex($1))/ige;
|
|---|
| 613 | }
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | $block_hash->{'file_blocks'}->{$link} = 1;
|
|---|
| 617 | }
|
|---|
| 618 | }
|
|---|
| 619 |
|
|---|
| 620 |
|
|---|
| 621 | # do plugin specific processing of doc_obj
|
|---|
| 622 | sub process {
|
|---|
| 623 | my $self = shift (@_);
|
|---|
| 624 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
|
|---|
| 625 | my $outhandle = $self->{'outhandle'};
|
|---|
| 626 |
|
|---|
| 627 | if ($ENV{'GSDLOS'} =~ /^windows/i) {
|
|---|
| 628 | # this makes life so much easier... perl can cope with unix-style '/'s.
|
|---|
| 629 | $base_dir =~ s@(\\)+@/@g;
|
|---|
| 630 | $file =~ s@(\\)+@/@g;
|
|---|
| 631 | }
|
|---|
| 632 |
|
|---|
| 633 | # reset per-doc stuff...
|
|---|
| 634 | $self->{'aux_files'} = {};
|
|---|
| 635 | $self->{'dir_num'} = 0;
|
|---|
| 636 | $self->{'file_num'} = 0;
|
|---|
| 637 |
|
|---|
| 638 | # process an HTML file where sections are divided by headings tags (H1, H2 ...)
|
|---|
| 639 | # you can also include metadata in the format (X can be any number)
|
|---|
| 640 | # <hX>Title<!--gsdl-metadata
|
|---|
| 641 | # <Metadata name="name1">value1</Metadata>
|
|---|
| 642 | # ...
|
|---|
| 643 | # <Metadata name="nameN">valueN</Metadata>
|
|---|
| 644 | #--></hX>
|
|---|
| 645 | if ($self->{'sectionalise_using_h_tags'}) {
|
|---|
| 646 | # description_tags should allways be activated because we convert headings to description tags
|
|---|
| 647 | $self->{'description_tags'} = 1;
|
|---|
| 648 |
|
|---|
| 649 | my $arrSections = [];
|
|---|
| 650 | $$textref =~ s/<h([0-9]+)[^>]*>(.*?)<\/h[0-9]+>/$self->process_heading($1, $2, $arrSections, $file)/isge;
|
|---|
| 651 |
|
|---|
| 652 | if (scalar(@$arrSections)) {
|
|---|
| 653 | my $strMetadata = $self->update_section_data($arrSections, -1);
|
|---|
| 654 | if (length($strMetadata)) {
|
|---|
| 655 | $strMetadata = '<!--' . $strMetadata . "\n-->\n</body>";
|
|---|
| 656 | $$textref =~ s/<\/body>/$strMetadata/ig;
|
|---|
| 657 | }
|
|---|
| 658 | }
|
|---|
| 659 | }
|
|---|
| 660 |
|
|---|
| 661 | my $cursection = $doc_obj->get_top_section();
|
|---|
| 662 |
|
|---|
| 663 | $self->extract_metadata ($textref, $metadata, $doc_obj, $cursection)
|
|---|
| 664 | unless $self->{'no_metadata'} || $self->{'description_tags'};
|
|---|
| 665 |
|
|---|
| 666 | # Store URL for page as metadata - this can be used for an
|
|---|
| 667 | # altavista style search interface. The URL won't be valid
|
|---|
| 668 | # unless the file structure contains the domain name (i.e.
|
|---|
| 669 | # like when w3mir is used to download a website).
|
|---|
| 670 |
|
|---|
| 671 | # URL metadata (even invalid ones) are used to support internal
|
|---|
| 672 | # links, so even if 'file_is_url' is off, still need to store info
|
|---|
| 673 |
|
|---|
| 674 | my $utf8_file = $self->filename_to_utf8_metadata($file);
|
|---|
| 675 | my $web_url = "http://$utf8_file";
|
|---|
| 676 | $doc_obj->add_utf8_metadata($cursection, "URL", $web_url);
|
|---|
| 677 |
|
|---|
| 678 | if ($self->{'file_is_url'}) {
|
|---|
| 679 | $doc_obj->add_metadata($cursection, "weblink", "<a href=\"$web_url\">");
|
|---|
| 680 | $doc_obj->add_metadata($cursection, "webicon", "_iconworld_");
|
|---|
| 681 | $doc_obj->add_metadata($cursection, "/weblink", "</a>");
|
|---|
| 682 | }
|
|---|
| 683 |
|
|---|
| 684 | if ($self->{'description_tags'}) {
|
|---|
| 685 | # remove the html header - note that doing this here means any
|
|---|
| 686 | # sections defined within the header will be lost (so all <Section>
|
|---|
| 687 | # tags must appear within the body of the HTML)
|
|---|
| 688 | my ($head_keep) = ($$textref =~ m/^(.*?)<body[^>]*>/is);
|
|---|
| 689 |
|
|---|
| 690 | $$textref =~ s/^.*?<body[^>]*>//is;
|
|---|
| 691 | $$textref =~ s/(<\/body[^>]*>|<\/html[^>]*>)//isg;
|
|---|
| 692 |
|
|---|
| 693 | my $opencom = '(?:<!--|<!(?:—|—|--))';
|
|---|
| 694 | my $closecom = '(?:-->|(?:—|—|--)>)';
|
|---|
| 695 |
|
|---|
| 696 | my $lt = '(?:<|<)';
|
|---|
| 697 | my $gt = '(?:>|>)';
|
|---|
| 698 | my $quot = '(?:"|"|”|“)';
|
|---|
| 699 |
|
|---|
| 700 | my $dont_strip = '';
|
|---|
| 701 | if ($self->{'no_strip_metadata_html'}) {
|
|---|
| 702 | ($dont_strip = $self->{'no_strip_metadata_html'}) =~ s{,}{|}g;
|
|---|
| 703 | }
|
|---|
| 704 |
|
|---|
| 705 | my $found_something = 0; my $top = 1;
|
|---|
| 706 | while ($$textref =~ s/^(.*?)$opencom(.*?)$closecom//s) {
|
|---|
| 707 | my $text = $1;
|
|---|
| 708 | my $comment = $2;
|
|---|
| 709 | if (defined $text) {
|
|---|
| 710 | # text before a comment - note that getting to here
|
|---|
| 711 | # doesn't necessarily mean there are Section tags in
|
|---|
| 712 | # the document
|
|---|
| 713 | $self->process_section(\$text, $base_dir, $file, $doc_obj, $cursection);
|
|---|
| 714 | }
|
|---|
| 715 | while ($comment =~ s/$lt(.*?)$gt//s) {
|
|---|
| 716 | my $tag = $1;
|
|---|
| 717 | if ($tag eq "Section") {
|
|---|
| 718 | $found_something = 1;
|
|---|
| 719 | $cursection = $doc_obj->insert_section($doc_obj->get_end_child($cursection)) unless $top;
|
|---|
| 720 | $top = 0;
|
|---|
| 721 | } elsif ($tag eq "/Section") {
|
|---|
| 722 | $found_something = 1;
|
|---|
| 723 | $cursection = $doc_obj->get_parent_section ($cursection);
|
|---|
| 724 | } elsif ($tag =~ /^Metadata name=$quot(.*?)$quot/s) {
|
|---|
| 725 | my $metaname = $1;
|
|---|
| 726 | my $accumulate = $tag =~ /mode=${quot}accumulate${quot}/ ? 1 : 0;
|
|---|
| 727 | $comment =~ s/^(.*?)$lt\/Metadata$gt//s;
|
|---|
| 728 | my $metavalue = $1;
|
|---|
| 729 | $metavalue =~ s/^\s+//;
|
|---|
| 730 | $metavalue =~ s/\s+$//;
|
|---|
| 731 | # assume that no metadata value intentionally includes
|
|---|
| 732 | # carriage returns or HTML tags (if they're there they
|
|---|
| 733 | # were probably introduced when converting to HTML from
|
|---|
| 734 | # some other format).
|
|---|
| 735 | # actually some people want to have html tags in their
|
|---|
| 736 | # metadata.
|
|---|
| 737 | $metavalue =~ s/[\cJ\cM]/ /sg;
|
|---|
| 738 | $metavalue =~ s/<[^>]+>//sg
|
|---|
| 739 | unless $dont_strip && ($dont_strip eq 'all' || $metaname =~ /^($dont_strip)$/);
|
|---|
| 740 | $metavalue =~ s/\s+/ /sg;
|
|---|
| 741 | if ($accumulate) {
|
|---|
| 742 | $doc_obj->add_utf8_metadata($cursection, $metaname, $metavalue);
|
|---|
| 743 | } else {
|
|---|
| 744 | $doc_obj->set_utf8_metadata_element($cursection, $metaname, $metavalue);
|
|---|
| 745 | }
|
|---|
| 746 | } elsif ($tag eq "Description" || $tag eq "/Description") {
|
|---|
| 747 | # do nothing with containing Description tags
|
|---|
| 748 | } else {
|
|---|
| 749 | # simple HTML tag (probably created by the conversion
|
|---|
| 750 | # to HTML from some other format) - we'll ignore it and
|
|---|
| 751 | # hope for the best ;-)
|
|---|
| 752 | }
|
|---|
| 753 | }
|
|---|
| 754 | }
|
|---|
| 755 | if ($cursection ne "") {
|
|---|
| 756 | print $outhandle "HTMLPlugin: WARNING: $file contains unmatched <Section></Section> tags\n";
|
|---|
| 757 | }
|
|---|
| 758 |
|
|---|
| 759 | $$textref =~ s/^.*?<body[^>]*>//is;
|
|---|
| 760 | $$textref =~ s/(<\/body[^>]*>|<\/html[^>]*>)//isg;
|
|---|
| 761 | if ($$textref =~ /\S/) {
|
|---|
| 762 | if (!$found_something) {
|
|---|
| 763 | if ($self->{'verbosity'} > 2) {
|
|---|
| 764 | print $outhandle "HTMLPlugin: WARNING: $file appears to contain no Section tags so\n";
|
|---|
| 765 | print $outhandle " will be processed as a single section document\n";
|
|---|
| 766 | }
|
|---|
| 767 |
|
|---|
| 768 | # go ahead and process single-section document
|
|---|
| 769 | $self->process_section($textref, $base_dir, $file, $doc_obj, $cursection);
|
|---|
| 770 |
|
|---|
| 771 | # if document contains no Section tags we'll go ahead
|
|---|
| 772 | # and extract metadata (this won't have been done
|
|---|
| 773 | # above as the -description_tags option prevents it)
|
|---|
| 774 | my $complete_text = $head_keep.$doc_obj->get_text($cursection);
|
|---|
| 775 | $self->extract_metadata (\$complete_text, $metadata, $doc_obj, $cursection)
|
|---|
| 776 | unless $self->{'no_metadata'};
|
|---|
| 777 |
|
|---|
| 778 | } else {
|
|---|
| 779 | print $outhandle "HTMLPlugin: WARNING: $file contains the following text outside\n";
|
|---|
| 780 | print $outhandle " of the final closing </Section> tag. This text will\n";
|
|---|
| 781 | print $outhandle " be ignored.";
|
|---|
| 782 |
|
|---|
| 783 | my ($text);
|
|---|
| 784 | if (length($$textref) > 30) {
|
|---|
| 785 | $text = substr($$textref, 0, 30) . "...";
|
|---|
| 786 | } else {
|
|---|
| 787 | $text = $$textref;
|
|---|
| 788 | }
|
|---|
| 789 | $text =~ s/\n/ /isg;
|
|---|
| 790 | print $outhandle " ($text)\n";
|
|---|
| 791 | }
|
|---|
| 792 | } elsif (!$found_something) {
|
|---|
| 793 |
|
|---|
| 794 | if ($self->{'verbosity'} > 2) {
|
|---|
| 795 | # may get to here if document contained no valid Section
|
|---|
| 796 | # tags but did contain some comments. The text will have
|
|---|
| 797 | # been processed already but we should print the warning
|
|---|
| 798 | # as above and extract metadata
|
|---|
| 799 | print $outhandle "HTMLPlugin: WARNING: $file appears to contain no Section tags and\n";
|
|---|
| 800 | print $outhandle " is blank or empty. Metadata will be assigned if present.\n";
|
|---|
| 801 | }
|
|---|
| 802 |
|
|---|
| 803 | my $complete_text = $head_keep.$doc_obj->get_text($cursection);
|
|---|
| 804 | $self->extract_metadata (\$complete_text, $metadata, $doc_obj, $cursection)
|
|---|
| 805 | unless $self->{'no_metadata'};
|
|---|
| 806 | }
|
|---|
| 807 |
|
|---|
| 808 | } else {
|
|---|
| 809 |
|
|---|
| 810 | # remove header and footer
|
|---|
| 811 | if (!$self->{'keep_head'} || $self->{'description_tags'}) {
|
|---|
| 812 | $$textref =~ s/^.*?<body[^>]*>//is;
|
|---|
| 813 | $$textref =~ s/(<\/body[^>]*>|<\/html[^>]*>)//isg;
|
|---|
| 814 | }
|
|---|
| 815 |
|
|---|
| 816 | # single section document
|
|---|
| 817 | $self->process_section($textref, $base_dir, $file, $doc_obj, $cursection);
|
|---|
| 818 | }
|
|---|
| 819 | return 1;
|
|---|
| 820 | }
|
|---|
| 821 |
|
|---|
| 822 |
|
|---|
| 823 | sub process_heading
|
|---|
| 824 | {
|
|---|
| 825 | my ($self, $nHeadNo, $strHeadingText, $arrSections, $file) = @_;
|
|---|
| 826 | $strHeadingText = '' if (!defined($strHeadingText));
|
|---|
| 827 |
|
|---|
| 828 | my $strMetadata = $self->update_section_data($arrSections, int($nHeadNo));
|
|---|
| 829 |
|
|---|
| 830 | my $strSecMetadata = '';
|
|---|
| 831 | while ($strHeadingText =~ s/<!--gsdl-metadata(.*?)-->//is)
|
|---|
| 832 | {
|
|---|
| 833 | $strSecMetadata .= $1;
|
|---|
| 834 | }
|
|---|
| 835 |
|
|---|
| 836 | $strHeadingText =~ s/^\s+//g;
|
|---|
| 837 | $strHeadingText =~ s/\s+$//g;
|
|---|
| 838 | $strSecMetadata =~ s/^\s+//g;
|
|---|
| 839 | $strSecMetadata =~ s/\s+$//g;
|
|---|
| 840 |
|
|---|
| 841 | $strMetadata .= "\n<Section>\n\t<Description>\n\t\t<Metadata name=\"Title\">" . $strHeadingText . "</Metadata>\n";
|
|---|
| 842 |
|
|---|
| 843 | if (length($strSecMetadata)) {
|
|---|
| 844 | $strMetadata .= "\t\t" . $strSecMetadata . "\n";
|
|---|
| 845 | }
|
|---|
| 846 |
|
|---|
| 847 | $strMetadata .= "\t</Description>\n";
|
|---|
| 848 |
|
|---|
| 849 | return "<!--" . $strMetadata . "-->";
|
|---|
| 850 | }
|
|---|
| 851 |
|
|---|
| 852 |
|
|---|
| 853 | sub update_section_data
|
|---|
| 854 | {
|
|---|
| 855 | my ($self, $arrSections, $nCurTocNo) = @_;
|
|---|
| 856 | my ($strBuffer, $nLast, $nSections) = ('', 0, scalar(@$arrSections));
|
|---|
| 857 |
|
|---|
| 858 | if ($nSections == 0) {
|
|---|
| 859 | push @$arrSections, $nCurTocNo;
|
|---|
| 860 | return $strBuffer;
|
|---|
| 861 | }
|
|---|
| 862 | $nLast = $arrSections->[$nSections - 1];
|
|---|
| 863 | if ($nCurTocNo > $nLast) {
|
|---|
| 864 | push @$arrSections, $nCurTocNo;
|
|---|
| 865 | return $strBuffer;
|
|---|
| 866 | }
|
|---|
| 867 | for(my $i = $nSections - 1; $i >= 0; $i--) {
|
|---|
| 868 | if ($nCurTocNo <= $arrSections->[$i]) {
|
|---|
| 869 | $strBuffer .= "\n</Section>";
|
|---|
| 870 | pop @$arrSections;
|
|---|
| 871 | }
|
|---|
| 872 | }
|
|---|
| 873 | push @$arrSections, $nCurTocNo;
|
|---|
| 874 | return $strBuffer;
|
|---|
| 875 | }
|
|---|
| 876 |
|
|---|
| 877 |
|
|---|
| 878 | # note that process_section may be called multiple times for a single
|
|---|
| 879 | # section (relying on the fact that add_utf8_text appends the text to any
|
|---|
| 880 | # that may exist already).
|
|---|
| 881 | sub process_section {
|
|---|
| 882 | my $self = shift (@_);
|
|---|
| 883 | my ($textref, $base_dir, $file, $doc_obj, $cursection) = @_;
|
|---|
| 884 | # trap links
|
|---|
| 885 | if (!$self->{'nolinks'}) {
|
|---|
| 886 | # usemap="./#index" not handled correctly => change to "#index"
|
|---|
| 887 | $$textref =~ s/(<img[^>]*?usemap\s*=\s*[\"\']?)([^\"\'>\s]+)([\"\']?[^>]*>)/
|
|---|
| 888 | $self->replace_usemap_links($1, $2, $3)/isge;
|
|---|
| 889 |
|
|---|
| 890 | $$textref =~ s/(<(?:a|area|frame|link|script)\s+[^>]*?\s*(?:href|src)\s*=\s*[\"\']?)([^\"\'>\s]+)([\"\']?[^>]*>)/
|
|---|
| 891 | $self->replace_href_links ($1, $2, $3, $base_dir, $file, $doc_obj, $cursection)/isge;
|
|---|
| 892 | }
|
|---|
| 893 |
|
|---|
| 894 | # trap images
|
|---|
| 895 |
|
|---|
| 896 | # Previously, by default, HTMLPlugin would embed <img> tags inside anchor tags
|
|---|
| 897 | # i.e. <a href="image><img src="image"></a> in order to overcome a problem that
|
|---|
| 898 | # turned regular text succeeding images into links. That is, by embedding <imgs>
|
|---|
| 899 | # inside <a href=""></a>, the text following images were no longer misbehaving.
|
|---|
| 900 | # However, there would be many occasions whereby images were not meant to link
|
|---|
| 901 | # to their source images but where the images would link to another web page.
|
|---|
| 902 | # To allow this, the no_image_links option was introduced: it would prevent
|
|---|
| 903 | # the behaviour of embedding images into links that referenced the source images.
|
|---|
| 904 |
|
|---|
| 905 | # Somewhere along the line, the problem of normal text turning into links when
|
|---|
| 906 | # such text followed images which were not embedded in <a href=""></a> ceased
|
|---|
| 907 | # to occur. This is why the following lines have been commented out (as well as
|
|---|
| 908 | # two lines in replace_images). They appear to no longer apply.
|
|---|
| 909 |
|
|---|
| 910 | # If at any time, there is a need for having images embedded in <a> anchor tags,
|
|---|
| 911 | # then it might be better to turn that into an HTMLPlugin option rather than make
|
|---|
| 912 | # it the default behaviour. Also, eventually, no_image_links needs to become
|
|---|
| 913 | # a deprecated option for HTMLPlugin as it has now become the default behaviour.
|
|---|
| 914 |
|
|---|
| 915 | #if(!$self->{'no_image_links'}){
|
|---|
| 916 | $$textref =~ s/(<(?:img|embed|table|tr|td)[^>]*?(?:src|background)\s*=\s*)((?:[\"][^\"]+[\"])|(?:[\'][^\']+[\'])|(?:[^\s\/>]+))([^>]*>)/
|
|---|
| 917 | $self->replace_images ($1, $2, $3, $base_dir, $file, $doc_obj, $cursection)/isge;
|
|---|
| 918 | #}
|
|---|
| 919 |
|
|---|
| 920 | # add text to document object
|
|---|
| 921 | # turn \ into \\ so that the rest of greenstone doesn't think there
|
|---|
| 922 | # is an escape code following. (Macro parsing loses them...)
|
|---|
| 923 | $$textref =~ s/\\/\\\\/go;
|
|---|
| 924 |
|
|---|
| 925 | $doc_obj->add_utf8_text($cursection, $$textref);
|
|---|
| 926 | }
|
|---|
| 927 |
|
|---|
| 928 | sub replace_images {
|
|---|
| 929 | my $self = shift (@_);
|
|---|
| 930 | my ($front, $link, $back, $base_dir,
|
|---|
| 931 | $file, $doc_obj, $section) = @_;
|
|---|
| 932 |
|
|---|
| 933 | # remove quotes from link at start and end if necessary
|
|---|
| 934 | if ($link=~/^[\"\']/) {
|
|---|
| 935 | $link=~s/^[\"\']//;
|
|---|
| 936 | $link=~s/[\"\']$//;
|
|---|
| 937 | $front.='"';
|
|---|
| 938 | $back="\"$back";
|
|---|
| 939 | }
|
|---|
| 940 |
|
|---|
| 941 | $link =~ s/\n/ /g;
|
|---|
| 942 |
|
|---|
| 943 | # Hack to overcome Windows wv 0.7.1 bug that causes embedded images to be broken
|
|---|
| 944 | # If the Word file path has spaces in it, wv messes up and you end up with
|
|---|
| 945 | # absolute paths for the images, and without the "file://" prefix
|
|---|
| 946 | # So check for this special case and massage the data to be correct
|
|---|
| 947 | if ($ENV{'GSDLOS'} =~ /^windows/i && $self->{'plugin_type'} eq "WordPlug" && $link =~ /^[A-Za-z]\:\\/) {
|
|---|
| 948 | $link =~ s/^.*\\([^\\]+)$/$1/;
|
|---|
| 949 | }
|
|---|
| 950 |
|
|---|
| 951 | my ($href, $hash_part, $rl) = $self->format_link ($link, $base_dir, $file);
|
|---|
| 952 |
|
|---|
| 953 | my $img_file = $self->add_file ($href, $rl, $hash_part, $base_dir, $doc_obj, $section);
|
|---|
| 954 |
|
|---|
| 955 | print STDERR "**** link = $link\n";
|
|---|
| 956 | print STDERR "**** href = $href\n";
|
|---|
| 957 | print STDERR "**** img_file = $img_file\n";
|
|---|
| 958 |
|
|---|
| 959 | my $anchor_name = $img_file;
|
|---|
| 960 | #$anchor_name =~ s/^.*\///;
|
|---|
| 961 | #$anchor_name = "<a name=\"$anchor_name\" ></a>";
|
|---|
| 962 |
|
|---|
| 963 | my $image_link = $front . $img_file .$back;
|
|---|
| 964 | return $image_link;
|
|---|
| 965 |
|
|---|
| 966 | # The reasons for why the following two lines are no longer necessary can be
|
|---|
| 967 | # found in subroutine process_section
|
|---|
| 968 | #my $anchor_link = "<a href=\"$img_file\" >".$image_link."</a>";
|
|---|
| 969 | #return $anchor_link;
|
|---|
| 970 |
|
|---|
| 971 | #return $front . $img_file . $back . $anchor_name;
|
|---|
| 972 | }
|
|---|
| 973 |
|
|---|
| 974 | sub replace_href_links {
|
|---|
| 975 | my $self = shift (@_);
|
|---|
| 976 | my ($front, $link, $back, $base_dir, $file, $doc_obj, $section) = @_;
|
|---|
| 977 |
|
|---|
| 978 | # attempt to sort out targets - frames are not handled
|
|---|
| 979 | # well in this plugin and some cases will screw things
|
|---|
| 980 | # up - e.g. the _parent target (so we'll just remove
|
|---|
| 981 | # them all ;-)
|
|---|
| 982 | $front =~ s/(target=\"?)_top(\"?)/$1_gsdltop_$2/is;
|
|---|
| 983 | $back =~ s/(target=\"?)_top(\"?)/$1_gsdltop_$2/is;
|
|---|
| 984 | $front =~ s/target=\"?_parent\"?//is;
|
|---|
| 985 | $back =~ s/target=\"?_parent\"?//is;
|
|---|
| 986 |
|
|---|
| 987 | return $front . $link . $back if $link =~ /^\#/s;
|
|---|
| 988 | $link =~ s/\n/ /g;
|
|---|
| 989 |
|
|---|
| 990 | my ($href, $hash_part, $rl) = $self->format_link ($link, $base_dir, $file);
|
|---|
| 991 | # href may use '\'s where '/'s should be on Windows
|
|---|
| 992 | $href =~ s/\\/\//g;
|
|---|
| 993 |
|
|---|
| 994 | my ($filename) = $href =~ /^(?:.*?):(?:\/\/)?(.*)/;
|
|---|
| 995 |
|
|---|
| 996 |
|
|---|
| 997 | ##### leave all these links alone (they won't be picked up by intermediate
|
|---|
| 998 | ##### pages). I think that's safest when dealing with frames, targets etc.
|
|---|
| 999 | ##### (at least until I think of a better way to do it). Problems occur with
|
|---|
| 1000 | ##### mailto links from within small frames, the intermediate page is displayed
|
|---|
| 1001 | ##### within that frame and can't be seen. There is still potential for this to
|
|---|
| 1002 | ##### happen even with html pages - the solution seems to be to somehow tell
|
|---|
| 1003 | ##### the browser from the server side to display the page being sent (i.e.
|
|---|
| 1004 | ##### the intermediate page) in the top level window - I'm not sure if that's
|
|---|
| 1005 | ##### possible - the following line should probably be deleted if that can be done
|
|---|
| 1006 | return $front . $link . $back if $href =~ /^(mailto|news|gopher|nntp|telnet|javascript):/is;
|
|---|
| 1007 |
|
|---|
| 1008 |
|
|---|
| 1009 | if (($rl == 0) || ($filename =~ /$self->{'process_exp'}/) ||
|
|---|
| 1010 | ($href =~ /\/$/) || ($href =~ /^(mailto|news|gopher|nntp|telnet|javascript):/i)) {
|
|---|
| 1011 | &ghtml::urlsafe ($href);
|
|---|
| 1012 | return $front . "_httpextlink_&rl=" . $rl . "&href=" . $href . $hash_part . $back;
|
|---|
| 1013 | } else {
|
|---|
| 1014 | # link is to some other type of file (eg image) so we'll
|
|---|
| 1015 | # need to associate that file
|
|---|
| 1016 | return $front . $self->add_file ($href, $rl, $hash_part, $base_dir, $doc_obj, $section) . $back;
|
|---|
| 1017 | }
|
|---|
| 1018 | }
|
|---|
| 1019 |
|
|---|
| 1020 | sub add_file {
|
|---|
| 1021 | my $self = shift (@_);
|
|---|
| 1022 | my ($href, $rl, $hash_part, $base_dir, $doc_obj, $section) = @_;
|
|---|
| 1023 | my ($newname);
|
|---|
| 1024 |
|
|---|
| 1025 | my $filename = $href;
|
|---|
| 1026 | if ($base_dir eq "") {
|
|---|
| 1027 | # remove http:/ thereby leaving one slash at the start
|
|---|
| 1028 | $filename =~ s/^[^:]*:\///;
|
|---|
| 1029 | }
|
|---|
| 1030 | else {
|
|---|
| 1031 | # remove http://
|
|---|
| 1032 | $filename =~ s/^[^:]*:\/\///;
|
|---|
| 1033 | }
|
|---|
| 1034 |
|
|---|
| 1035 | $filename = &util::filename_cat($base_dir, $filename);
|
|---|
| 1036 |
|
|---|
| 1037 | # Replace %XX's in URL with decoded value if required.
|
|---|
| 1038 | # Note that the filename may include the %XX in some situations
|
|---|
| 1039 | if ($filename =~ m/\%[A-F0-9]{2}/i) {
|
|---|
| 1040 | if (!-e $filename) {
|
|---|
| 1041 | $filename =~ s/\%([A-F0-9]{2})/pack('C', hex($1))/ige;
|
|---|
| 1042 | }
|
|---|
| 1043 | }
|
|---|
| 1044 |
|
|---|
| 1045 | my ($ext) = $filename =~ /(\.[^\.]*)$/;
|
|---|
| 1046 |
|
|---|
| 1047 | if ($rl == 0) {
|
|---|
| 1048 | if ((!defined $ext) || ($ext !~ /$self->{'assoc_files'}/)) {
|
|---|
| 1049 | return "_httpextlink_&rl=0&el=prompt&href=" . $href . $hash_part;
|
|---|
| 1050 | }
|
|---|
| 1051 | else {
|
|---|
| 1052 | return "_httpextlink_&rl=0&el=direct&href=" . $href . $hash_part;
|
|---|
| 1053 | }
|
|---|
| 1054 | }
|
|---|
| 1055 |
|
|---|
| 1056 | if ((!defined $ext) || ($ext !~ /$self->{'assoc_files'}/)) {
|
|---|
| 1057 | return "_httpextlink_&rl=" . $rl . "&href=" . $href . $hash_part;
|
|---|
| 1058 | }
|
|---|
| 1059 | if ($self->{'rename_assoc_files'}) {
|
|---|
| 1060 | if (defined $self->{'aux_files'}->{$href}) {
|
|---|
| 1061 | $newname = $self->{'aux_files'}->{$href}->{'dir_num'} . "/" .
|
|---|
| 1062 | $self->{'aux_files'}->{$href}->{'file_num'} . $ext;
|
|---|
| 1063 | } else {
|
|---|
| 1064 | $newname = $self->{'dir_num'} . "/" . $self->{'file_num'} . $ext;
|
|---|
| 1065 | $self->{'aux_files'}->{$href} = {'dir_num' => $self->{'dir_num'}, 'file_num' => $self->{'file_num'}};
|
|---|
| 1066 | $self->inc_filecount ();
|
|---|
| 1067 | }
|
|---|
| 1068 | $doc_obj->associate_file($filename, $newname, undef, $section);
|
|---|
| 1069 | return "_httpdocimg_/$newname";
|
|---|
| 1070 | } else {
|
|---|
| 1071 | ($newname) = $filename =~ /([^\/\\]*)$/;
|
|---|
| 1072 | # Make sure this name is a valid utf8 filename
|
|---|
| 1073 | ## &unicode::ensure_utf8(\$newname);
|
|---|
| 1074 | $newname =~ s/([^A-Za-z0-9])/sprintf("%%%02X", ord($1))/seg;
|
|---|
| 1075 |
|
|---|
| 1076 | $doc_obj->associate_file($filename, $newname, undef, $section);
|
|---|
| 1077 |
|
|---|
| 1078 | my $newname_url = $newname;
|
|---|
| 1079 | $newname_url =~ s/%/%25/g;
|
|---|
| 1080 | return "_httpdocimg_/$newname_url";
|
|---|
| 1081 | }
|
|---|
| 1082 | }
|
|---|
| 1083 |
|
|---|
| 1084 |
|
|---|
| 1085 |
|
|---|
| 1086 | sub format_link {
|
|---|
| 1087 | my $self = shift (@_);
|
|---|
| 1088 | my ($link, $base_dir, $file) = @_;
|
|---|
| 1089 |
|
|---|
| 1090 | my ($before_hash, $hash_part) = $link =~ /^([^\#]*)(\#?.*)$/;
|
|---|
| 1091 |
|
|---|
| 1092 | $hash_part = "" if !defined $hash_part;
|
|---|
| 1093 | if (!defined $before_hash || $before_hash !~ /[\w\.\/]/) {
|
|---|
| 1094 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1095 | print $outhandle "HTMLPlugin: ERROR - badly formatted tag ignored ($link)\n"
|
|---|
| 1096 | if $self->{'verbosity'};
|
|---|
| 1097 | return ($link, "", 0);
|
|---|
| 1098 | }
|
|---|
| 1099 |
|
|---|
| 1100 | if ($before_hash =~ s@^((?:http|ftp|file)://)@@i) {
|
|---|
| 1101 | my $type = $1;
|
|---|
| 1102 |
|
|---|
| 1103 | if ($link =~ /^(http|ftp):/i) {
|
|---|
| 1104 | # Turn url (using /) into file name (possibly using \ on windows)
|
|---|
| 1105 | my @http_dir_split = split('/', $before_hash);
|
|---|
| 1106 | $before_hash = &util::filename_cat(@http_dir_split);
|
|---|
| 1107 | }
|
|---|
| 1108 |
|
|---|
| 1109 | $before_hash = $self->eval_dir_dots($before_hash);
|
|---|
| 1110 |
|
|---|
| 1111 | my $linkfilename = &util::filename_cat ($base_dir, $before_hash);
|
|---|
| 1112 |
|
|---|
| 1113 | my $rl = 0;
|
|---|
| 1114 | $rl = 1 if (-e $linkfilename);
|
|---|
| 1115 |
|
|---|
| 1116 | # make sure there's a slash on the end if it's a directory
|
|---|
| 1117 | if ($before_hash !~ /\/$/) {
|
|---|
| 1118 | $before_hash .= "/" if (-d $linkfilename);
|
|---|
| 1119 | }
|
|---|
| 1120 |
|
|---|
| 1121 | return ($type . $before_hash, $hash_part, $rl);
|
|---|
| 1122 |
|
|---|
| 1123 | } elsif ($link !~ /^(mailto|news|gopher|nntp|telnet|javascript):/i && $link !~ /^\//) {
|
|---|
| 1124 | if ($before_hash =~ s@^/@@ || $before_hash =~ /\\/) {
|
|---|
| 1125 |
|
|---|
| 1126 | # the first directory will be the domain name if file_is_url
|
|---|
| 1127 | # to generate archives, otherwise we'll assume all files are
|
|---|
| 1128 | # from the same site and base_dir is the root
|
|---|
| 1129 |
|
|---|
| 1130 | if ($self->{'file_is_url'}) {
|
|---|
| 1131 | my @dirs = split /[\/\\]/, $file;
|
|---|
| 1132 | my $domname = shift (@dirs);
|
|---|
| 1133 | $before_hash = &util::filename_cat($domname, $before_hash);
|
|---|
| 1134 | $before_hash =~ s@\\@/@g; # for windows
|
|---|
| 1135 | }
|
|---|
| 1136 | else
|
|---|
| 1137 | {
|
|---|
| 1138 | # see if link shares directory with source document
|
|---|
| 1139 | # => turn into relative link if this is so!
|
|---|
| 1140 |
|
|---|
| 1141 | if ($ENV{'GSDLOS'} =~ /^windows/i) {
|
|---|
| 1142 | # too difficult doing a pattern match with embedded '\'s...
|
|---|
| 1143 | my $win_before_hash=$before_hash;
|
|---|
| 1144 | $win_before_hash =~ s@(\\)+@/@g;
|
|---|
| 1145 | # $base_dir is already similarly "converted" on windows.
|
|---|
| 1146 | if ($win_before_hash =~ s@^$base_dir/@@o) {
|
|---|
| 1147 | # if this is true, we removed a prefix
|
|---|
| 1148 | $before_hash=$win_before_hash;
|
|---|
| 1149 | }
|
|---|
| 1150 | }
|
|---|
| 1151 | else {
|
|---|
| 1152 | # before_hash has lost leading slash by this point,
|
|---|
| 1153 | # -> add back in prior to substitution with $base_dir
|
|---|
| 1154 | $before_hash = "/$before_hash";
|
|---|
| 1155 |
|
|---|
| 1156 | $before_hash = &util::filename_cat("",$before_hash);
|
|---|
| 1157 | $before_hash =~ s@^$base_dir/@@;
|
|---|
| 1158 | }
|
|---|
| 1159 | }
|
|---|
| 1160 | } else {
|
|---|
| 1161 | # Turn relative file path into full path
|
|---|
| 1162 | my $dirname = &File::Basename::dirname($file);
|
|---|
| 1163 | $before_hash = &util::filename_cat($dirname, $before_hash);
|
|---|
| 1164 | $before_hash = $self->eval_dir_dots($before_hash);
|
|---|
| 1165 | }
|
|---|
| 1166 |
|
|---|
| 1167 | my $linkfilename = &util::filename_cat ($base_dir, $before_hash);
|
|---|
| 1168 | # make sure there's a slash on the end if it's a directory
|
|---|
| 1169 | if ($before_hash !~ /\/$/) {
|
|---|
| 1170 | $before_hash .= "/" if (-d $linkfilename);
|
|---|
| 1171 | }
|
|---|
| 1172 | return ("http://" . $before_hash, $hash_part, 1);
|
|---|
| 1173 | } else {
|
|---|
| 1174 | # mailto, news, nntp, telnet, javascript or gopher link
|
|---|
| 1175 | return ($before_hash, "", 0);
|
|---|
| 1176 | }
|
|---|
| 1177 | }
|
|---|
| 1178 |
|
|---|
| 1179 | sub extract_first_NNNN_characters {
|
|---|
| 1180 | my $self = shift (@_);
|
|---|
| 1181 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 1182 |
|
|---|
| 1183 | foreach my $size (split /,/, $self->{'first'}) {
|
|---|
| 1184 | my $tmptext = $$textref;
|
|---|
| 1185 | # skip to the body
|
|---|
| 1186 | $tmptext =~ s/.*<body[^>]*>//i;
|
|---|
| 1187 | # remove javascript
|
|---|
| 1188 | $tmptext =~ s@<script.*?</script>@ @sig;
|
|---|
| 1189 | $tmptext =~ s/<[^>]*>/ /g;
|
|---|
| 1190 | $tmptext =~ s/ / /g;
|
|---|
| 1191 | $tmptext =~ s/^\s+//;
|
|---|
| 1192 | $tmptext =~ s/\s+$//;
|
|---|
| 1193 | $tmptext =~ s/\s+/ /gs;
|
|---|
| 1194 | $tmptext = &unicode::substr ($tmptext, 0, $size);
|
|---|
| 1195 | $tmptext =~ s/\s\S*$/…/; # adds an ellipse (...)
|
|---|
| 1196 | $doc_obj->add_utf8_metadata ($thissection, "First$size", $tmptext);
|
|---|
| 1197 | }
|
|---|
| 1198 | }
|
|---|
| 1199 |
|
|---|
| 1200 |
|
|---|
| 1201 | sub extract_metadata {
|
|---|
| 1202 | my $self = shift (@_);
|
|---|
| 1203 | my ($textref, $metadata, $doc_obj, $section) = @_;
|
|---|
| 1204 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1205 | # if we don't want metadata, we may as well not be here ...
|
|---|
| 1206 | return if (!defined $self->{'metadata_fields'});
|
|---|
| 1207 |
|
|---|
| 1208 | # metadata fields to extract/save. 'key' is the (lowercase) name of the
|
|---|
| 1209 | # html meta, 'value' is the metadata name for greenstone to use
|
|---|
| 1210 | my %find_fields = ();
|
|---|
| 1211 |
|
|---|
| 1212 | my %creator_fields = (); # short-cut for lookups
|
|---|
| 1213 |
|
|---|
| 1214 |
|
|---|
| 1215 | foreach my $field (split /,/, $self->{'metadata_fields'}) {
|
|---|
| 1216 | $field =~ s/^\s+//; # remove leading whitespace
|
|---|
| 1217 | $field =~ s/\s+$//; # remove trailing whitespace
|
|---|
| 1218 |
|
|---|
| 1219 | # support tag<tagname>
|
|---|
| 1220 | if ($field =~ /^(.*?)<(.*?)>$/) {
|
|---|
| 1221 | # "$2" is the user's preferred gs metadata name
|
|---|
| 1222 | $find_fields{lc($1)}=$2; # lc = lowercase
|
|---|
| 1223 | } else { # no <tagname> for mapping
|
|---|
| 1224 | # "$field" is the user's preferred gs metadata name
|
|---|
| 1225 | $find_fields{lc($field)}=$field; # lc = lowercase
|
|---|
| 1226 | }
|
|---|
| 1227 | }
|
|---|
| 1228 |
|
|---|
| 1229 | if (defined $self->{'hunt_creator_metadata'} &&
|
|---|
| 1230 | $self->{'hunt_creator_metadata'} == 1 ) {
|
|---|
| 1231 | my @extra_fields =
|
|---|
| 1232 | (
|
|---|
| 1233 | 'author',
|
|---|
| 1234 | 'author.email',
|
|---|
| 1235 | 'creator',
|
|---|
| 1236 | 'dc.creator',
|
|---|
| 1237 | 'dc.creator.corporatename',
|
|---|
| 1238 | );
|
|---|
| 1239 |
|
|---|
| 1240 | # add the creator_metadata fields to search for
|
|---|
| 1241 | foreach my $field (@extra_fields) {
|
|---|
| 1242 | $creator_fields{$field}=0; # add to lookup hash
|
|---|
| 1243 | }
|
|---|
| 1244 | }
|
|---|
| 1245 |
|
|---|
| 1246 |
|
|---|
| 1247 | # find the header in the html file, which has the meta tags
|
|---|
| 1248 | $$textref =~ m@<head>(.*?)</head>@si;
|
|---|
| 1249 |
|
|---|
| 1250 | my $html_header=$1;
|
|---|
| 1251 |
|
|---|
| 1252 | # go through every <meta... tag defined in the html and see if it is
|
|---|
| 1253 | # one of the tags we want to match.
|
|---|
| 1254 |
|
|---|
| 1255 | # special case for title - we want to remember if its been found
|
|---|
| 1256 | my $found_title = 0;
|
|---|
| 1257 | # this assumes that ">" won't appear. (I don't think it's allowed to...)
|
|---|
| 1258 | $html_header =~ /^/; # match the start of the string, for \G assertion
|
|---|
| 1259 |
|
|---|
| 1260 | while ($html_header =~ m/\G.*?<meta(.*?)>/sig) {
|
|---|
| 1261 | my $metatag=$1;
|
|---|
| 1262 | my ($tag, $value);
|
|---|
| 1263 |
|
|---|
| 1264 | # find the tag name
|
|---|
| 1265 | $metatag =~ /(?:name|http-equiv)\s*=\s*([\"\'])?(.*?)\1/is;
|
|---|
| 1266 | $tag=$2;
|
|---|
| 1267 | # in case they're not using " or ', but they should...
|
|---|
| 1268 | if (! $tag) {
|
|---|
| 1269 | $metatag =~ /(?:name|http-equiv)\s*=\s*([^\s\>]+)/is;
|
|---|
| 1270 | $tag=$1;
|
|---|
| 1271 | }
|
|---|
| 1272 |
|
|---|
| 1273 | if (!defined $tag) {
|
|---|
| 1274 | print $outhandle "HTMLPlugin: can't find NAME in \"$metatag\"\n";
|
|---|
| 1275 | next;
|
|---|
| 1276 | }
|
|---|
| 1277 |
|
|---|
| 1278 | # don't need to assign this field if it was passed in from a previous
|
|---|
| 1279 | # (recursive) plugin
|
|---|
| 1280 | if (defined $metadata->{$tag}) {next}
|
|---|
| 1281 |
|
|---|
| 1282 | # find the tag content
|
|---|
| 1283 | $metatag =~ /content\s*=\s*([\"\'])?(.*?)\1/is;
|
|---|
| 1284 | $value=$2;
|
|---|
| 1285 |
|
|---|
| 1286 | if (! $value) {
|
|---|
| 1287 | $metatag =~ /(?:name|http-equiv)\s*=\s*([^\s\>]+)/is;
|
|---|
| 1288 | $value=$1;
|
|---|
| 1289 | }
|
|---|
| 1290 | if (!defined $value) {
|
|---|
| 1291 | print $outhandle "HTMLPlugin: can't find VALUE in \"$metatag\"\n";
|
|---|
| 1292 | next;
|
|---|
| 1293 | }
|
|---|
| 1294 |
|
|---|
| 1295 | # clean up and add
|
|---|
| 1296 | $value =~ s/\s+/ /gs;
|
|---|
| 1297 | chomp($value); # remove trailing \n, if any
|
|---|
| 1298 | if (exists $creator_fields{lc($tag)}) {
|
|---|
| 1299 | # map this value onto greenstone's "Creator" metadata
|
|---|
| 1300 | $tag='Creator';
|
|---|
| 1301 | } elsif (!exists $find_fields{lc($tag)}) {
|
|---|
| 1302 | next; # don't want this tag
|
|---|
| 1303 | } else {
|
|---|
| 1304 | # get the user's preferred capitalisation
|
|---|
| 1305 | $tag = $find_fields{lc($tag)};
|
|---|
| 1306 | }
|
|---|
| 1307 | if (lc($tag) eq "title") {
|
|---|
| 1308 | $found_title = 1;
|
|---|
| 1309 | }
|
|---|
| 1310 | print $outhandle " extracted \"$tag\" metadata \"$value\"\n"
|
|---|
| 1311 | if ($self->{'verbosity'} > 2);
|
|---|
| 1312 | if ($tag =~ /date.*/i){
|
|---|
| 1313 | $tag = lc($tag);
|
|---|
| 1314 | }
|
|---|
| 1315 | $doc_obj->add_utf8_metadata($section, $tag, $value);
|
|---|
| 1316 |
|
|---|
| 1317 | }
|
|---|
| 1318 |
|
|---|
| 1319 | # TITLE: extract the document title
|
|---|
| 1320 | if (exists $find_fields{'title'} && !$found_title) {
|
|---|
| 1321 | # we want a title, and didn't find one in the meta tags
|
|---|
| 1322 | # see if there's a <title> tag
|
|---|
| 1323 | my $title;
|
|---|
| 1324 | my $from = ""; # for debugging output only
|
|---|
| 1325 | if ($html_header =~ /<title[^>]*>([^<]+)<\/title[^>]*>/is) {
|
|---|
| 1326 | $title = $1;
|
|---|
| 1327 | $from = "<title> tags";
|
|---|
| 1328 | }
|
|---|
| 1329 |
|
|---|
| 1330 | if (!defined $title) {
|
|---|
| 1331 | $from = "first 100 chars";
|
|---|
| 1332 | # if no title use first 100 or so characters
|
|---|
| 1333 | $title = $$textref;
|
|---|
| 1334 | $title =~ s/^\xFE\xFF//; # Remove unicode byte order mark
|
|---|
| 1335 | $title =~ s/^.*?<body>//si;
|
|---|
| 1336 | # ignore javascript!
|
|---|
| 1337 | $title =~ s@<script.*?</script>@ @sig;
|
|---|
| 1338 | $title =~ s/<\/([^>]+)><\1>//g; # (eg) </b><b> - no space
|
|---|
| 1339 | $title =~ s/<[^>]*>/ /g; # remove all HTML tags
|
|---|
| 1340 | $title = substr ($title, 0, 100);
|
|---|
| 1341 | $title =~ s/\s\S*$/.../;
|
|---|
| 1342 | }
|
|---|
| 1343 | $title =~ s/<[^>]*>/ /g; # remove html tags
|
|---|
| 1344 | $title =~ s/ / /g;
|
|---|
| 1345 | $title =~ s/(?: |\xc2\xa0)/ /g; # utf-8 for nbsp...
|
|---|
| 1346 | $title =~ s/\s+/ /gs; # collapse multiple spaces
|
|---|
| 1347 | $title =~ s/^\s*//; # remove leading spaces
|
|---|
| 1348 | $title =~ s/\s*$//; # remove trailing spaces
|
|---|
| 1349 |
|
|---|
| 1350 | $title =~ s/^$self->{'title_sub'}// if ($self->{'title_sub'});
|
|---|
| 1351 | $title =~ s/^\s+//s; # in case title_sub introduced any...
|
|---|
| 1352 | $doc_obj->add_utf8_metadata ($section, 'Title', $title);
|
|---|
| 1353 | print $outhandle " extracted Title metadata \"$title\" from $from\n"
|
|---|
| 1354 | if ($self->{'verbosity'} > 2);
|
|---|
| 1355 | }
|
|---|
| 1356 |
|
|---|
| 1357 | # add FileFormat metadata
|
|---|
| 1358 | $doc_obj->add_metadata($section,"FileFormat", "HTML");
|
|---|
| 1359 |
|
|---|
| 1360 | # Special, for metadata names such as tagH1 - extracts
|
|---|
| 1361 | # the text between the first <H1> and </H1> tags into "H1" metadata.
|
|---|
| 1362 |
|
|---|
| 1363 | foreach my $field (keys %find_fields) {
|
|---|
| 1364 | if ($field !~ /^tag([a-z0-9]+)$/i) {next}
|
|---|
| 1365 | my $tag = $1;
|
|---|
| 1366 | if ($$textref =~ m@<$tag[^>]*>(.*?)</$tag[^>]*>@g) {
|
|---|
| 1367 | my $content = $1;
|
|---|
| 1368 | $content =~ s/ / /g;
|
|---|
| 1369 | $content =~ s/<[^>]*>/ /g;
|
|---|
| 1370 | $content =~ s/^\s+//;
|
|---|
| 1371 | $content =~ s/\s+$//;
|
|---|
| 1372 | $content =~ s/\s+/ /gs;
|
|---|
| 1373 | if ($content) {
|
|---|
| 1374 | $tag=$find_fields{"tag$tag"}; # get the user's capitalisation
|
|---|
| 1375 | $tag =~ s/^tag//i;
|
|---|
| 1376 | $doc_obj->add_utf8_metadata ($section, $tag, $content);
|
|---|
| 1377 | print $outhandle " extracted \"$tag\" metadata \"$content\"\n"
|
|---|
| 1378 | if ($self->{'verbosity'} > 2);
|
|---|
| 1379 | }
|
|---|
| 1380 | }
|
|---|
| 1381 | }
|
|---|
| 1382 | }
|
|---|
| 1383 |
|
|---|
| 1384 |
|
|---|
| 1385 | # evaluate any "../" to next directory up
|
|---|
| 1386 | # evaluate any "./" as here
|
|---|
| 1387 | sub eval_dir_dots {
|
|---|
| 1388 | my $self = shift (@_);
|
|---|
| 1389 | my ($filename) = @_;
|
|---|
| 1390 | my $dirsep_os = &util::get_os_dirsep();
|
|---|
| 1391 | my @dirsep = split(/$dirsep_os/,$filename);
|
|---|
| 1392 |
|
|---|
| 1393 | my @eval_dirs = ();
|
|---|
| 1394 | foreach my $d (@dirsep) {
|
|---|
| 1395 | if ($d eq "..") {
|
|---|
| 1396 | pop(@eval_dirs);
|
|---|
| 1397 |
|
|---|
| 1398 | } elsif ($d eq ".") {
|
|---|
| 1399 | # do nothing!
|
|---|
| 1400 |
|
|---|
| 1401 | } else {
|
|---|
| 1402 | push(@eval_dirs,$d);
|
|---|
| 1403 | }
|
|---|
| 1404 | }
|
|---|
| 1405 |
|
|---|
| 1406 | # Need to fiddle with number of elements in @eval_dirs if the
|
|---|
| 1407 | # first one is the empty string. This is because of a
|
|---|
| 1408 | # modification to util::filename_cat that supresses the addition
|
|---|
| 1409 | # of a leading '/' character (or \ if windows) (intended to help
|
|---|
| 1410 | # filename cat with relative paths) if the first entry in the
|
|---|
| 1411 | # array is the empty string. Making the array start with *two*
|
|---|
| 1412 | # empty strings is a way to defeat this "smart" option.
|
|---|
| 1413 | #
|
|---|
| 1414 | if (scalar(@eval_dirs) > 0) {
|
|---|
| 1415 | if ($eval_dirs[0] eq ""){
|
|---|
| 1416 | unshift(@eval_dirs,"");
|
|---|
| 1417 | }
|
|---|
| 1418 | }
|
|---|
| 1419 | return &util::filename_cat(@eval_dirs);
|
|---|
| 1420 | }
|
|---|
| 1421 |
|
|---|
| 1422 | sub replace_usemap_links {
|
|---|
| 1423 | my $self = shift (@_);
|
|---|
| 1424 | my ($front, $link, $back) = @_;
|
|---|
| 1425 |
|
|---|
| 1426 | $link =~ s/^\.\///;
|
|---|
| 1427 | return $front . $link . $back;
|
|---|
| 1428 | }
|
|---|
| 1429 |
|
|---|
| 1430 | sub inc_filecount {
|
|---|
| 1431 | my $self = shift (@_);
|
|---|
| 1432 |
|
|---|
| 1433 | if ($self->{'file_num'} == 1000) {
|
|---|
| 1434 | $self->{'dir_num'} ++;
|
|---|
| 1435 | $self->{'file_num'} = 0;
|
|---|
| 1436 | } else {
|
|---|
| 1437 | $self->{'file_num'} ++;
|
|---|
| 1438 | }
|
|---|
| 1439 | }
|
|---|
| 1440 |
|
|---|
| 1441 |
|
|---|
| 1442 | # Extend read_file so that strings like é are
|
|---|
| 1443 | # converted to UTF8 internally.
|
|---|
| 1444 | #
|
|---|
| 1445 | # We don't convert < or > or & or " in case
|
|---|
| 1446 | # they interfere with the GML files
|
|---|
| 1447 |
|
|---|
| 1448 | sub read_file {
|
|---|
| 1449 | my $self = shift(@_);
|
|---|
| 1450 | my ($filename, $encoding, $language, $textref) = @_;
|
|---|
| 1451 |
|
|---|
| 1452 | $self->SUPER::read_file($filename, $encoding, $language, $textref);
|
|---|
| 1453 |
|
|---|
| 1454 | # Convert entities to their UTF8 equivalents
|
|---|
| 1455 | $$textref =~ s/&(lt|gt|amp|quot|nbsp);/&z$1;/go;
|
|---|
| 1456 | $$textref =~ s/&([^;]+);/&ghtml::getcharequiv($1,1)/gseo;
|
|---|
| 1457 | $$textref =~ s/&z(lt|gt|amp|quot|nbsp);/&$1;/go;
|
|---|
| 1458 | }
|
|---|
| 1459 |
|
|---|
| 1460 | 1;
|
|---|
