| 1 | # This document processor outputs a document
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| 2 | # for mg to process
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| 3 |
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| 4 |
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| 5 | package mgbuildproc;
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| 6 |
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| 7 | use docproc;
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| 8 | use util;
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| 9 |
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| 10 |
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| 11 | BEGIN {
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| 12 | @ISA = ('docproc');
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| 13 | }
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| 14 |
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| 15 |
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| 16 | sub new {
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| 17 | my ($class, $collection, $source_dir, $build_dir, $verbosity) = @_;
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| 18 | my $self = new docproc ();
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| 19 |
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| 20 | $self->{'collection'} = $collection;
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| 21 | $self->{'source_dir'} = $source_dir;
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| 22 | $self->{'build_dir'} = $build_dir;
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| 23 | $self->{'verbosity'} = $verbosity;
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| 24 | $self->{'mode'} = "text";
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| 25 | $self->{'index'} = "section:text";
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| 26 | $self->{'output_handle'} = "STDOUT";
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| 27 | $self->{'num_docs'} = 0;
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| 28 | $self->{'num_sections'} = 0;
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| 29 | $self->{'num_bytes'} = 0;
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| 30 |
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| 31 | return bless $self, $class;
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| 32 | }
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| 33 |
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| 34 | sub reset {
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| 35 | my $self = shift (@_);
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| 36 |
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| 37 | $self->{'num_docs'} = 0;
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| 38 | $self->{'num_sections'} = 0;
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| 39 | $self->{'num_bytes'} = 0;
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| 40 | }
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| 41 |
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| 42 | sub get_num_docs {
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| 43 | my $self = shift (@_);
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| 44 |
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| 45 | return $self->{'num_docs'};
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| 46 | }
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| 47 |
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| 48 | sub get_num_sections {
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| 49 | my $self = shift (@_);
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| 50 |
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| 51 | return $self->{'num_sections'};
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| 52 | }
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| 53 |
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| 54 | sub get_num_bytes {
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| 55 | my $self = shift (@_);
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| 56 |
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| 57 | return $self->{'num_bytes'};
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| 58 | }
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| 59 |
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| 60 | sub set_output_handle {
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| 61 | my $self = shift (@_);
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| 62 | my ($handle) = @_;
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| 63 |
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| 64 | $self->{'output_handle'} = $handle;
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| 65 | }
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| 66 |
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| 67 | sub set_mode {
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| 68 | my $self = shift (@_);
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| 69 | my ($mode) = @_;
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| 70 |
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| 71 | $self->{'mode'} = $mode;
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| 72 | }
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| 73 |
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| 74 | sub set_index {
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| 75 | my $self = shift (@_);
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| 76 | my ($index) = @_;
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| 77 |
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| 78 | $self->{'index'} = $index;
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| 79 | }
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| 80 |
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| 81 | sub process {
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| 82 | my $self = shift (@_);
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| 83 | my ($doc_obj) = @_;
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| 84 | my $method = $self->{'mode'};
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| 85 |
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| 86 | $self->$method($doc_obj);
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| 87 | }
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| 88 |
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| 89 | sub infodb {
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| 90 | my $self = shift (@_);
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| 91 | my ($doc_obj) = @_;
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| 92 | my $handle = $self->{'output_handle'};
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| 93 |
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| 94 | if ($doc_obj eq 'classifications') {
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| 95 | # output classifications if all books have been processed
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| 96 | foreach $key (keys %$saved_classifications) {
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| 97 | $saved_classifications->{$key}->{'contains'} = undef if
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| 98 | $saved_classifications->{$key}->{'contains'} eq "";
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| 99 | $saved_classifications->{$key}->{'parent'} = undef if
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| 100 | (!defined $saved_classifications->{$key}->{'parent'}) ||
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| 101 | ($saved_classifications->{$key}->{'parent'} eq "");
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| 102 | $self->write_to_gdbm ($handle, $key, $saved_classifications->{$key}->{'title'},
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| 103 | undef, undef, undef, undef,
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| 104 | $saved_classifications->{$key}->{'contains'}, undef,
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| 105 | $saved_classifications->{$key}->{'parent'}, undef, undef);
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| 106 | }
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| 107 | return;
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| 108 | }
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| 109 |
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| 110 | my $doctype = $doc_obj->get_doc_type();
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| 111 |
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| 112 | # only output this document if it is one to be indexed
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| 113 | return if ($doctype ne "indexed_doc" &&
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| 114 | $doctype ne "classification");
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| 115 |
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| 116 | # found classification document
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| 117 | $saved_classifications = {} if ($doctype eq "classification");
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| 118 | $sectionmap = {};
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| 119 |
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| 120 | # this is another document
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| 121 | $self->{'num_docs'} += 1 unless ($doctype eq "classification");
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| 122 |
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| 123 | my $section = $doc_obj->get_top_section();
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| 124 | while (defined $section) {
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| 125 | # update a few statistics
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| 126 | $self->{'num_bytes'} += $doc_obj->get_text_length ($section);
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| 127 | $self->{'num_sections'} += 1 unless ($doctype eq "classification");
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| 128 |
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| 129 | my $title = $doc_obj->get_metadata_element($section, "Title");
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| 130 | my $source = $doc_obj->get_metadata_element($section, "Source");
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| 131 | my $date = $doc_obj->get_metadata_element($section, "Date");
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| 132 | my $jobnumber = $doc_obj->get_source_filename();
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| 133 |
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| 134 | my $mapped_section = $self->map_section($doctype, $section);
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| 135 | if ($doctype eq "classification") {
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| 136 | $mapped_section = $self->char_classification($mapped_section);
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| 137 | } else {
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| 138 | $mapped_section = "B.$self->{'num_docs'}.$mapped_section";
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| 139 | }
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| 140 | $mapped_section =~ s/\.+$//;
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| 141 |
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| 142 | my ($parent, $classification, $creator, $OID);
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| 143 |
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| 144 | if ($section ne $doc_obj->get_top_section()) {
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| 145 | $parent = $self->map_section($doctype, $doc_obj->get_parent_section($section));
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| 146 | if ($doctype eq "classification") {
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| 147 | $parent = $self->char_classification($parent);
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| 148 | } else {
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| 149 | $parent = "B.$self->{'num_docs'}.$parent";
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| 150 | }
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| 151 | $parent =~ s/\.+$//;
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| 152 | } else {
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| 153 | $classification = $self->get_classifications($doc_obj, $section, $mapped_section)
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| 154 | unless $doctype eq "classification";
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| 155 | $creator = $doc_obj->get_metadata_element($section, "Creator");
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| 156 | $OID = $doc_obj->get_OID();
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| 157 | # this is a hack at getting OID to look like the directory path - I'm sure there's
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| 158 | # a better way to do it but it's late... Stefan
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| 159 | my @OIDchars = split //, $OID;
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| 160 | $OID = "";
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| 161 | my $count = 0;
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| 162 | foreach $i (@OIDchars) {
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| 163 | if ($count == 7) {
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| 164 | $OID .= "$i/";
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| 165 | $count = 0;
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| 166 | } else {
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| 167 | $OID .= $i;
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| 168 | $count ++;
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| 169 | }
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| 170 | }
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| 171 | $OID =~ s/\/$//;
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| 172 | $OID .= ".dir";
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| 173 | }
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| 174 |
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| 175 | if ($doc_obj->is_leaf_section($section)) {
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| 176 | if ($doctype eq "classification") {
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| 177 | if (defined $saved_classifications->{$mapped_section}) {
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| 178 | print STDERR "mgbuildproc:warning: classification $mapped_section " .
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| 179 | "declared multiple times\n";
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| 180 | } else {
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| 181 | $saved_classifications->{$mapped_section} = {'title' => $title, 'contains' => "",
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| 182 | 'parent' => $parent};
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| 183 | }
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| 184 | } else {
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| 185 | $self->write_to_gdbm($handle, $mapped_section, $title, $creator, $source, $date, $jobnumber, undef,
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| 186 | $self->{'num_sections'}, $parent, $classification, $OID);
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| 187 | }
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| 188 | } else {
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| 189 |
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| 190 | # add the introductory section if it exists
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| 191 | my $contains = "";
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| 192 | if ($doc_obj->get_text_length($section) > 0) {
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| 193 | $contains .= "B.$self->{'num_docs'}." . $self->map_section ($doctype, "$section.0");
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| 194 | }
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| 195 |
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| 196 | # add the rest of the children
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| 197 | my @children = @{$doc_obj->get_children($section)};
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| 198 | if ($doctype eq "classification") {
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| 199 | map {$_ = $self->char_classification($_);} @children;
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| 200 | if (defined $saved_classifications->{$mapped_section}) {
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| 201 | print STDERR "mgbuildproc:warning: classification $mapped_section " .
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| 202 | "declared multiple times\n";
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| 203 | } else {
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| 204 | $saved_classifications->{$mapped_section} = {'title' => $title, 'contains' => ""};
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| 205 | $saved_classifications->{$mapped_section}->{'contains'} = join ":", @children;
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| 206 | $saved_classifications->{$mapped_section}->{'parent'} = $parent;
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| 207 | }
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| 208 | } else {
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| 209 | map {$_ = "B.$self->{'num_docs'}." . $self->map_section($doctype, $_);} @children;
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| 210 | $contains .= ":" if $contains ne "";
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| 211 | $contains .= join ":", @children;
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| 212 | $self->write_to_gdbm ($handle, $mapped_section, $title, $creator, $source,
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| 213 | $date, $jobnumber, $contains, $self->{'num_sections'},
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| 214 | $parent, $classification, $OID);
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| 215 |
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| 216 | if ($doc_obj->get_text_length($section) > 0) {
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| 217 | my $intromapsection = "B.$self->{'num_docs'}." .
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| 218 | $self->map_section($doctype, "$section.0");
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| 219 | $self->write_to_gdbm ($handle, $intromapsection, "<i>(introductory text)</i>", $creator,
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| 220 | $source, $date, $jobnumber, undef, $self->{'num_sections'},
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| 221 | $mapped_section, undef, $OID);
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| 222 | }
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| 223 | }
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| 224 | }
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| 225 | $section = $doc_obj->get_next_section($section);
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| 226 | }
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| 227 |
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| 228 | # update classification list with those books that
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| 229 | # were processed before classification list
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| 230 | if ($doctype eq "classification" && defined $temp_classifications) {
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| 231 | foreach $key (keys(%$temp_classifications)) {
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| 232 | if (!defined $saved_classifications->{$key}) {
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| 233 | print STDERR "mgbuildproc:$temp_classifications->{$key} belong to " .
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| 234 | "undefined classification $key\n";
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| 235 | }
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| 236 | $saved_classifications->{$key}->{'contains'} = $temp_classifications->{$key}->{'contains'};
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| 237 | }
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| 238 | $temp_classifications = undef;
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| 239 | }
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| 240 | }
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| 241 |
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| 242 |
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| 243 | sub write_to_gdbm {
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| 244 | my $self = shift (@_);
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| 245 | my ($handle, $section, $title, $creator, $source, $date,
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| 246 | $jobnumber, $contains, $docnum, $parent, $classification, $OID) = @_;
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| 247 |
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| 248 | print $handle "[$section]\n";
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| 249 | print $handle "<t>$title\n" if defined $title;
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| 250 | print $handle "<a>$creator\n" if defined $creator;
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| 251 | print $handle "<s>$source\n" if defined $source;
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| 252 | print $handle "<i>$date\n" if defined $date;
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| 253 | print $handle "<j>$jobnumber\n" if defined $jobnumber;
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| 254 | print $handle "<c>$contains\n" if defined $contains;
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| 255 | print $handle "<d>$docnum\n" if defined $docnum;
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| 256 | print $handle "<p>$parent\n" if defined $parent;
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| 257 | print $handle "<x>$classification\n" if defined $classification;
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| 258 | print $handle "<o>$OID\n" if defined $OID;
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| 259 | print $handle '-' x 70, "\n";
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| 260 |
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| 261 | if (defined $docnum) {
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| 262 | print $handle "[$docnum]\n";
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| 263 | print $handle "<x>$section\n";
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| 264 | print $handle '-' x 70, "\n";
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| 265 | }
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| 266 | }
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| 267 |
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| 268 | sub get_classifications {
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| 269 | my $self = shift (@_);
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| 270 | my ($doc_obj, $section, $mapped_section) = @_;
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| 271 |
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| 272 | my ($classificationsref);
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| 273 | if (defined $saved_classifications) {
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| 274 | # classification list has been processed
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| 275 | $classificationsref = $saved_classifications;
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| 276 | } else {
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| 277 | # classification list has yet to be processed, save
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| 278 | # books in temp_classifications until list is processed
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| 279 | # and they can be moved into saved_classifications
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| 280 | $temp_classifications = {} unless defined $temp_classifications;
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| 281 | $classificationsref = $temp_classifications;
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| 282 | }
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| 283 |
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| 284 | my $classifications = $doc_obj->get_metadata($section, "Subject");
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| 285 |
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| 286 | # need to save which books belong in each classification
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| 287 | # to output later
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| 288 | foreach $classification (@$classifications) {
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| 289 |
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| 290 | if (!defined $classificationsref->{$classification}) {
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| 291 | $classificationsref->{$classification}->{'parent'} = $doc_obj->get_parent_section($section);
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| 292 | $classificationsref->{$classification}->{'contains'} = "";
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| 293 | }
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| 294 | $classificationsref->{$classification}->{'contains'} .= ":" unless
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| 295 | $classificationsref->{$classification}->{'contains'} eq "";
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| 296 | $classificationsref->{$classification}->{'contains'} .= $mapped_section;
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| 297 | }
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| 298 |
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| 299 | return (join ":", @$classifications);
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| 300 | }
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| 301 |
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| 302 | sub map_section {
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| 303 | my $self = shift (@_);
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| 304 | my ($doctype, $section) = @_;
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| 305 |
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| 306 | # classifications should never need to be mapped
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| 307 | return $section if $doctype eq "classification";
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| 308 |
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| 309 | return "" unless (defined $section) && ($section ne "");
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| 310 |
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| 311 | $sectionmap = {} unless defined $sectionmap;
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| 312 |
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| 313 |
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| 314 |
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| 315 | # get the section into a standard format
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| 316 | $section =~ s/^\.+|\.+$//g;
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| 317 |
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| 318 | # return the mapped section if it has been seen before
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| 319 | if (defined $sectionmap->{$section}) {
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| 320 | return $sectionmap->{$section};
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| 321 | }
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| 322 |
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| 323 | # find out the parent section
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| 324 | my ($parentsection, $num);
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| 325 | if ($section =~ /^(.+)\.(\d+)$/) {
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| 326 | $parentsection = $1;
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| 327 | $num = $2;
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| 328 | } elsif ($section =~ /^(\d+)$/) {
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| 329 | $parentsection = "";
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| 330 | $num = $1;
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| 331 | } else {
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| 332 | print STDERR "mgbuildproc:map_section - misformed section $section\n";
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| 333 | }
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| 334 | $parentsection = "" unless defined $parentsection;
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| 335 |
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| 336 | if ($parentsection eq "") {
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| 337 | $num ++ if $num == 1 and defined $sectionmap->{'0'};
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| 338 | } else {
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| 339 | $num ++ if $num == 1 and defined $sectionmap->{"$parentsection.0"};
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| 340 | }
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| 341 |
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| 342 | # find out the mapped parent section
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| 343 | my $mappedparentsection = $self->map_section ($doctype, $parentsection);
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| 344 |
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| 345 | # find the next unused child section
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| 346 | my $previousnum = $num - 1;
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| 347 | my $previoussection = "";
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| 348 | if ($parentsection eq "") {
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| 349 | $previoussection = $previousnum;
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| 350 | $previoussection = 0 if ($section == 1) && (defined $sectionmap->{'0'});
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| 351 | } else{
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| 352 | $previoussection = "$parentsection.$previousnum";
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| 353 | $previoussection = "$parentsection.0" if ($section =~ /\.1$/) && (defined $sectionmap->{"$parentsection.0"});
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| 354 | }
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| 355 | while (($previousnum > 0) && (!defined $sectionmap->{$previoussection})) {
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| 356 | $previousnum--;
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| 357 | $previoussection = "$parentsection.$previousnum";
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| 358 | $previoussection = $previousnum if $parentsection eq "";
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| 359 | }
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| 360 |
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| 361 | # there has been no children under this parent, this section will be number 1
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| 362 | if ($previousnum <= 0) {
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| 363 | if ($mappedparentsection eq "") {
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| 364 | $sectionmap->{$section} = "1";
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| 365 | } else {
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| 366 | $sectionmap->{$section} = "$mappedparentsection.1";
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| 367 | }
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| 368 |
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| 369 | } else {
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| 370 | # get the previous mapped number
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| 371 | my $previousmapnum = 0;
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| 372 | if ($sectionmap->{$previoussection} =~ /(^|\.)?(\d+)$/) {
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| 373 | $previousmapnum = $2;
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| 374 | }
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| 375 |
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| 376 | # increment it to get this mapped child
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| 377 | my $mappednum = $previousmapnum+1;
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| 378 |
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| 379 | if ($mappedparentsection eq "") {
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| 380 | $sectionmap->{$section} = $mappednum;
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| 381 | } else {
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| 382 | $sectionmap->{$section} = "$mappedparentsection.$mappednum";
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| 383 | }
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| 384 | }
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| 385 |
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| 386 | return $sectionmap->{$section};
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| 387 | }
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| 388 |
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| 389 | sub text {
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| 390 | my $self = shift (@_);
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| 391 | my ($doc_obj) = @_;
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| 392 | my $handle = $self->{'output_handle'};
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| 393 |
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| 394 | # only output this document if it is one to be indexed
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| 395 | return if ($doc_obj->get_doc_type() ne "indexed_doc");
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| 396 |
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| 397 | # this is another document
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| 398 | $self->{'num_docs'} += 1;
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| 399 |
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| 400 | # get the parameters for the output
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| 401 | my ($level, $fields) = split (/:/, $self->{'index'});
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| 402 | $fields =~ s/\ball\b/Title,Creator,text/;
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| 403 | $fields =~ s/\btopall\b/topTitle,topCreator,toptext/;
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| 404 |
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| 405 | my $doc_section = 0; # just for this document
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| 406 | my $text = "";
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| 407 | my $text_extra = "";
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| 408 |
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| 409 | # get the text for this document
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| 410 | my $section = $doc_obj->get_top_section();
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| 411 | while (defined $section) {
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| 412 | # update a few statistics
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| 413 | $doc_section++;
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| 414 | $self->{'num_bytes'} += $doc_obj->get_text_length ($section);
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| 415 | $self->{'num_sections'} += 1;
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| 416 |
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| 417 | foreach $field (split (/,/, $fields)) {
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| 418 | # only deal with this field if it doesn't start with top or
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| 419 | # this is the first section
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| 420 | my $real_field = $field;
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| 421 | if (!($real_field =~ s/^top//) || ($doc_section == 1)) {
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| 422 | my $new_text = "";
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| 423 | if ($real_field eq "text") {
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| 424 | $new_text = $doc_obj->get_text ($section);
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| 425 | $new_text =~ s/[\cB\cC]//g;
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| 426 | $new_text =~ s/(<p\b)/\cC$1/gi;
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| 427 |
|
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| 428 | } else {
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| 429 | $new_text = join ("\cC", @{$doc_obj->get_metadata ($section, $real_field)});
|
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| 430 | }
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| 431 |
|
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| 432 | $text .= "$new_text\cC";
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| 433 | }
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| 434 | }
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| 435 |
|
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| 436 | if ($level eq "document") { $text_extra .= "\cB"; }
|
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| 437 | else { $text .= "\cB"; }
|
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| 438 |
|
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| 439 | $section = $doc_obj->get_next_section($section);
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| 440 | }
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|---|
| 441 |
|
|---|
| 442 | print $handle "$text$text_extra";
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|---|
| 443 | }
|
|---|
| 444 |
|
|---|
| 445 | # converts leading number in classification back
|
|---|
| 446 | # to letter it represents
|
|---|
| 447 | # i.e 67.2.4 becomes C.2.4
|
|---|
| 448 | sub char_classification {
|
|---|
| 449 | my $self = shift (@_);
|
|---|
| 450 | my ($classification) = @_;
|
|---|
| 451 |
|
|---|
| 452 | return $classification if $classification eq "";
|
|---|
| 453 | my ($c) = $classification =~ /^\.?(\d+)/;
|
|---|
| 454 | $c = chr($c);
|
|---|
| 455 | $classification =~ s/^\d+/$c/;
|
|---|
| 456 |
|
|---|
| 457 | return $classification;
|
|---|
| 458 | }
|
|---|
| 459 |
|
|---|
| 460 | # converts leading letter of a classification into its ascii equivalent
|
|---|
| 461 | # i.e C.2.4 becomes 67.2.4
|
|---|
| 462 | sub int_classification {
|
|---|
| 463 | my $self = shift (@_);
|
|---|
| 464 | my ($classification) = @_;
|
|---|
| 465 | my $c = ord($classification);
|
|---|
| 466 | $classification =~ s/^./$c/;
|
|---|
| 467 |
|
|---|
| 468 | return $classification;
|
|---|
| 469 | }
|
|---|
| 470 | 1;
|
|---|
| 471 |
|
|---|
