[537] | 1 | ###########################################################################
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| 2 | #
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| 3 | # arcinfo.pm --
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 |
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[4] | 27 | # This module stores information about the archives. At the moment
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| 28 | # this information just consists of the file name (relative to the
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| 29 | # directory the archives information file is in) and its OID.
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| 30 |
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| 31 | # This module assumes there is a one to one correspondance between
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| 32 | # a file in the archives directory and an OID.
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| 33 |
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| 34 | package arcinfo;
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| 35 |
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[10157] | 36 | use constant ORDER_OID_INDEX => 0;
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| 37 | use constant ORDER_SORT_INDEX => 1;
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| 38 |
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| 39 | use constant INFO_FILE_INDEX => 0;
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| 40 | use constant INFO_STATUS_INDEX => 1;
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| 41 |
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[15889] | 42 | use strict;
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| 43 |
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[21543] | 44 | use dbutil;
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[15889] | 45 |
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[21543] | 46 |
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[10157] | 47 | # File format read in: OID <tab> Filename <tab> Optional-Index-Status
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| 48 |
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| 49 | # Index status can be:
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| 50 | # I = Index for the first time
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| 51 | # R = Reindex
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| 52 | # D = Delete
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| 53 | # B = Been indexed
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| 54 |
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[4] | 55 | sub new {
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[21579] | 56 | my $class = shift(@_);
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| 57 | my $infodbtype = shift(@_);
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| 58 |
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| 59 | # If the infodbtype wasn't passed in, use the default from dbutil
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| 60 | if (!defined($infodbtype))
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| 61 | {
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| 62 | $infodbtype = &dbutil::get_default_infodb_type();
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| 63 | }
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| 64 |
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| 65 | my $self = {'infodbtype' => $infodbtype,
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| 66 | 'info'=>{},
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[19774] | 67 | 'reverse-info'=>{},
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[15073] | 68 | 'order'=>[],
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[27697] | 69 | 'reverse_sort'=>0,
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| 70 | 'sort'=>0};
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[4] | 71 |
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| 72 | return bless $self, $class;
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| 73 | }
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| 74 |
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[18441] | 75 | sub _load_info_txt
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| 76 | {
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[4] | 77 | my $self = shift (@_);
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| 78 | my ($filename) = @_;
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| 79 |
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[12328] | 80 | if (defined $filename && -e $filename) {
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[4] | 81 | open (INFILE, $filename) ||
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| 82 | die "arcinfo::load_info couldn't read $filename\n";
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| 83 |
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| 84 | my ($line, @line);
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| 85 | while (defined ($line = <INFILE>)) {
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| 86 | $line =~ s/\cM|\cJ//g; # remove end-of-line characters
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| 87 | @line = split ("\t", $line); # filename,
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| 88 | if (scalar(@line) >= 2) {
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[14] | 89 | $self->add_info (@line);
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[4] | 90 | }
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| 91 | }
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| 92 | close (INFILE);
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| 93 | }
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[18441] | 94 |
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| 95 |
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[4] | 96 | }
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| 97 |
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[21564] | 98 | sub _load_info_db
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[18441] | 99 | {
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[4] | 100 | my $self = shift (@_);
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| 101 | my ($filename) = @_;
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| 102 |
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[18441] | 103 | my $infodb_map = {};
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| 104 |
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[21579] | 105 | &dbutil::read_infodb_file($self->{'infodbtype'}, $filename, $infodb_map);
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[18441] | 106 |
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| 107 | foreach my $oid ( keys %$infodb_map ) {
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| 108 | my $vals = $infodb_map->{$oid};
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| 109 | # interested in doc-file and index-status
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| 110 |
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| 111 | my ($doc_file) = ($vals=~/^<doc-file>(.*)$/m);
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| 112 | my ($index_status) = ($vals=~/^<index-status>(.*)$/m);
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[20747] | 113 | my ($sortmeta) = ($vals=~/^<sort-meta>(.*)$/m);
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| 114 | $self->add_info ($oid,$doc_file,$index_status,$sortmeta);
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[18441] | 115 | }
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| 116 | }
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| 117 |
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[19774] | 118 |
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[18441] | 119 | sub load_info {
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| 120 | my $self = shift (@_);
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| 121 | my ($filename) = @_;
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| 122 |
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| 123 | $self->{'info'} = {};
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| 124 |
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| 125 | if ((defined $filename) && (-e $filename)) {
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| 126 | if ($filename =~ m/\.inf$/) {
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| 127 | $self->_load_info_txt($filename);
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| 128 | }
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| 129 | else {
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[21564] | 130 | $self->_load_info_db($filename);
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[18441] | 131 | }
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| 132 | }
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| 133 | }
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| 134 |
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[21564] | 135 | sub _load_filelist_db
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[18441] | 136 | {
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| 137 | my $self = shift (@_);
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| 138 | my ($filename) = @_;
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| 139 |
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| 140 | my $infodb_map = {};
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| 141 |
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[21585] | 142 | &dbutil::read_infodb_file($self->{'infodbtype'}, $filename, $infodb_map);
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[18441] | 143 |
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| 144 | foreach my $file ( keys %$infodb_map ) {
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[28211] | 145 | # turn placeholders in the file keys of archiveinf-src file back to absolute paths
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| 146 | $file = &util::placeholders_to_abspath($file);
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[18456] | 147 | $self->{'prev_import_filelist'}->{$file} = 1;
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[18441] | 148 | }
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| 149 | }
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| 150 |
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| 151 |
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[18456] | 152 | sub load_prev_import_filelist {
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[18441] | 153 | my $self = shift (@_);
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| 154 | my ($filename) = @_;
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| 155 |
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| 156 | $self->{'import-filelist'} = {};
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| 157 |
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| 158 | if ((defined $filename) && (-e $filename)) {
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| 159 | if ($filename =~ m/\.inf$/) {
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| 160 | # e.g. 'archives-src.inf' (which includes complete list of file
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| 161 | # from last time import.pl was run)
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| 162 | $self->_load_info_txt($filename);
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| 163 | }
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| 164 | else {
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[21564] | 165 | $self->_load_filelist_db($filename);
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[18441] | 166 | }
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| 167 | }
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| 168 | }
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| 169 |
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[19774] | 170 | sub load_revinfo_UNTESTED
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| 171 | {
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| 172 | my $self = shift (@_);
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| 173 | my ($rev_filename) = @_;
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| 174 |
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| 175 | my $rev_infodb_map = {};
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| 176 |
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[21579] | 177 | &dbutil::read_infodb_file($self->{'infodbtype'}, $rev_filename, $rev_infodb_map);
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[19774] | 178 |
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| 179 | foreach my $srcfile ( keys %$rev_infodb_map ) {
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[28211] | 180 |
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[19774] | 181 | my $vals = $rev_infodb_map->{$srcfile};
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| 182 |
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[28211] | 183 | $srcfile = &util::abspath_to_placeholders($srcfile);
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| 184 |
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[19774] | 185 | foreach my $OID ($vals =~ m/^<oid>(.*)$/gm) {
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| 186 | $self->add_revinfo($srcfile,$OID);
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| 187 | }
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| 188 | }
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| 189 | }
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| 190 |
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| 191 |
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[18441] | 192 | sub _save_info_txt {
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| 193 | my $self = shift (@_);
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| 194 | my ($filename) = @_;
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| 195 |
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[14] | 196 | my ($OID, $info);
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[4] | 197 |
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| 198 | open (OUTFILE, ">$filename") ||
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| 199 | die "arcinfo::save_info couldn't write $filename\n";
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[7904] | 200 |
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[14] | 201 | foreach $info (@{$self->get_OID_list()}) {
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[4] | 202 | if (defined $info) {
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[14] | 203 | print OUTFILE join("\t", @$info), "\n";
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[4] | 204 | }
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| 205 | }
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| 206 | close (OUTFILE);
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| 207 | }
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| 208 |
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[21564] | 209 | sub _save_info_db {
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[18441] | 210 | my $self = shift (@_);
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| 211 | my ($filename) = @_;
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| 212 |
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[21857] | 213 | my $infodbtype = $self->{'infodbtype'};
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| 214 |
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[18441] | 215 | # Not the most efficient operation, but will do for now
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| 216 |
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| 217 | # read it in
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| 218 | my $infodb_map = {};
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[21857] | 219 | &dbutil::read_infodb_file($infodbtype, $filename, $infodb_map);
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[18441] | 220 |
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| 221 | # change index-status values
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| 222 | foreach my $info (@{$self->get_OID_list()}) {
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| 223 | if (defined $info) {
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| 224 | my ($oid,$doc_file,$index_status) = @$info;
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| 225 | if (defined $infodb_map->{$oid}) {
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| 226 | my $vals_ref = \$infodb_map->{$oid};
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| 227 | $$vals_ref =~ s/^<index-status>(.*)$/<index-status>$index_status/m;
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| 228 | }
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| 229 | else {
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| 230 | print STDERR "Warning: $filename does not have key $oid\n";
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| 231 | }
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| 232 | }
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| 233 | }
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| 234 |
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| 235 |
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| 236 | # write out again
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[21857] | 237 | my $infodb_handle = &dbutil::open_infodb_write_handle($infodbtype, $filename);
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[18441] | 238 | foreach my $oid ( keys %$infodb_map ) {
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[21857] | 239 | my $vals = $infodb_map->{$oid};
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| 240 | &dbutil::write_infodb_rawentry($infodbtype,$infodb_handle,$oid,$vals);
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[18441] | 241 | }
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[21857] | 242 | &dbutil::close_infodb_write_handle($infodbtype, $infodb_handle);
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[18441] | 243 |
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| 244 | }
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| 245 |
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[21564] | 246 | sub save_revinfo_db {
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[19774] | 247 | my $self = shift (@_);
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| 248 | my ($rev_filename) = @_;
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| 249 |
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| 250 | # Output reverse lookup database
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| 251 |
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| 252 | my $rev_infodb_map = $self->{'reverse-info'};
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| 253 | my $rev_infodb_handle
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[21579] | 254 | = &dbutil::open_infodb_write_handle($self->{'infodbtype'}, $rev_filename, "append");
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[19774] | 255 |
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| 256 | foreach my $key ( keys %$rev_infodb_map ) {
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| 257 | my $val_hash = $rev_infodb_map->{$key};
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[28211] | 258 |
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| 259 | $key = &util::abspath_to_placeholders($key);
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| 260 |
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[21579] | 261 | &dbutil::write_infodb_entry($self->{'infodbtype'}, $rev_infodb_handle, $key, $val_hash);
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[19774] | 262 | }
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[21579] | 263 | &dbutil::close_infodb_write_handle($self->{'infodbtype'}, $rev_infodb_handle);
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[19774] | 264 |
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| 265 | }
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| 266 |
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[18441] | 267 | sub save_info {
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| 268 | my $self = shift (@_);
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| 269 | my ($filename) = @_;
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| 270 |
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[20537] | 271 | if ($filename =~ m/(contents)|(\.inf)$/) {
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[18441] | 272 | $self->_save_info_txt($filename);
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| 273 | }
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| 274 | else {
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[21564] | 275 | $self->_save_info_db($filename);
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[18441] | 276 | }
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| 277 | }
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| 278 |
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[14] | 279 | sub delete_info {
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| 280 | my $self = shift (@_);
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| 281 | my ($OID) = @_;
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| 282 |
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| 283 | if (defined $self->{'info'}->{$OID}) {
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| 284 | delete $self->{'info'}->{$OID};
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| 285 |
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| 286 | my $i = 0;
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| 287 | while ($i < scalar (@{$self->{'order'}})) {
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[10157] | 288 | if ($self->{'order'}->[$i]->[ORDER_OID_INDEX] eq $OID) {
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[14] | 289 | splice (@{$self->{'order'}}, $i, 1);
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| 290 | last;
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| 291 | }
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| 292 |
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| 293 | $i ++;
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| 294 | }
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| 295 | }
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| 296 | }
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| 297 |
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[4] | 298 | sub add_info {
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| 299 | my $self = shift (@_);
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[10157] | 300 | my ($OID, $doc_file, $index_status, $sortmeta) = @_;
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[1287] | 301 | $sortmeta = "" unless defined $sortmeta;
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[10157] | 302 | $index_status = "I" unless defined $index_status; # I = needs indexing
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[4] | 303 |
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[3416] | 304 | if (! defined($OID)) {
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| 305 | # only happens when no files can be processed?
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| 306 | return undef;
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| 307 | }
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[10157] | 308 |
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[18469] | 309 | if (defined $self->{'info'}->{$OID}) {
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| 310 | # test to see if we are in a reindex situation
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| 311 |
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| 312 | my $existing_status_info = $self->get_status_info($OID);
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| 313 |
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| 314 | if ($existing_status_info eq "D") {
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| 315 | # yes, we're in a reindexing situation
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| 316 | $self->delete_info ($OID);
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| 317 |
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| 318 |
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| 319 | # force setting to "reindex"
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| 320 | $index_status = "R";
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| 321 |
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| 322 | }
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| 323 | else {
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| 324 | # some other, possibly erroneous, situation has arisen
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| 325 | # where the document already seems to exist
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| 326 | print STDERR "Warning: $OID already exists with index status $existing_status_info\n";
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| 327 | print STDERR " Deleting previous version\n";
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| 328 |
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| 329 | $self->delete_info ($OID);
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| 330 | }
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| 331 | }
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| 332 |
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[20747] | 333 | $self->{'info'}->{$OID} = [$doc_file,$index_status,$sortmeta];
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[27697] | 334 | push (@{$self->{'order'}}, [$OID, $sortmeta]); # ORDER_OID_INDEX and ORDER_SORT_INDEX
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[18469] | 335 |
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| 336 |
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[4] | 337 | }
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| 338 |
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[10157] | 339 | sub set_status_info {
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[4] | 340 | my $self = shift (@_);
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[10157] | 341 | my ($OID, $index_status) = @_;
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[4] | 342 |
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[10157] | 343 | my $OID_info = $self->{'info'}->{$OID};
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| 344 | $OID_info->[INFO_STATUS_INDEX] = $index_status;
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| 345 | }
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| 346 |
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| 347 |
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| 348 | sub get_status_info {
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| 349 | my $self = shift (@_);
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| 350 | my ($OID) = @_;
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| 351 |
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| 352 | my $index_status = undef;
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| 353 |
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| 354 | my $OID_info = $self->{'info'}->{$OID};
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| 355 | if (defined $OID_info) {
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| 356 | $index_status = $OID_info->[INFO_STATUS_INDEX];
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| 357 | }
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| 358 | else {
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| 359 | die "Unable to find document id $OID\n";
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| 360 | }
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| 361 |
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| 362 | return $index_status;
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| 363 |
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| 364 | }
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| 365 |
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[19774] | 366 |
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| 367 | sub add_reverseinfo {
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| 368 | my $self = shift (@_);
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| 369 | my ($key, $OID) = @_;
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| 370 |
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| 371 | my $existing_key = $self->{'reverse-info'}->{$key};
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| 372 | if (!defined $existing_key) {
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| 373 | $existing_key = {};
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| 374 | $self->{'reverse-info'}->{$key} = $existing_key;
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| 375 | }
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| 376 |
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| 377 | my $existing_oid = $existing_key->{'oid'};
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| 378 | if (!defined $existing_oid) {
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| 379 | $existing_oid = [];
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| 380 | $existing_key->{'oid'} = $existing_oid;
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| 381 | }
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| 382 |
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| 383 | push(@$existing_oid,$OID);
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| 384 | }
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| 385 |
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[20802] | 386 | sub set_meta_file_flag {
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| 387 | my $self = shift (@_);
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| 388 | my ($key) = @_;
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[19774] | 389 |
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[20802] | 390 | my $existing_key = $self->{'reverse-info'}->{$key};
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| 391 | if (!defined $existing_key) {
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| 392 | $existing_key = {};
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| 393 | $self->{'reverse-info'}->{$key} = $existing_key;
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| 394 | }
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| 395 |
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| 396 | $existing_key->{'meta-file'} = ["1"];
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| 397 |
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| 398 | }
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[15073] | 399 | sub reverse_sort
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| 400 | {
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| 401 | my $self = shift(@_);
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| 402 | $self->{'reverse_sort'} = 1;
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| 403 | }
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[27697] | 404 | sub sort
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| 405 | {
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| 406 | my $self = shift(@_);
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| 407 | $self->{'sort'} = 1;
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| 408 | }
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[10157] | 409 |
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[27697] | 410 |
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[10157] | 411 | # returns a list of the form [[OID, doc_file, index_status], ...]
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| 412 | sub get_OID_list
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| 413 | {
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| 414 | my $self = shift (@_);
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| 415 |
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| 416 | my $order = $self->{'order'};
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| 417 |
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[15073] | 418 | my @sorted_order;
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| 419 | if ($self->{'reverse_sort'}) {
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| 420 | @sorted_order = sort {$b->[ORDER_SORT_INDEX] cmp $a->[ORDER_SORT_INDEX]} @$order;
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[27697] | 421 | } elsif ($self->{'sort'}) {
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[15073] | 422 | @sorted_order = sort {$a->[ORDER_SORT_INDEX] cmp $b->[ORDER_SORT_INDEX]} @$order;
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[27697] | 423 | } else { # not sorting, don't bother
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| 424 | @sorted_order = @$order;
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[15073] | 425 | }
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[10157] | 426 |
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[4] | 427 | my @list = ();
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| 428 |
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[10157] | 429 | foreach my $OID_order (@sorted_order) {
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| 430 | my $OID = $OID_order->[ORDER_OID_INDEX];
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| 431 | my $OID_info = $self->{'info'}->{$OID};
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| 432 |
|
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| 433 | push (@list, [$OID, $OID_info->[INFO_FILE_INDEX],
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| 434 | $OID_info->[INFO_STATUS_INDEX]]);
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[4] | 435 | }
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| 436 |
|
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| 437 | return \@list;
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| 438 | }
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| 439 |
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| 440 | # returns a list of the form [[doc_file, OID], ...]
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| 441 | sub get_file_list {
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| 442 | my $self = shift (@_);
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| 443 |
|
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[10157] | 444 | my $order = $self->{'order'};
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| 445 |
|
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[15073] | 446 | my @sorted_order;
|
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| 447 | if ($self->{'reverse_sort'}) {
|
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| 448 | @sorted_order = sort {$b->[ORDER_SORT_INDEX] cmp $a->[ORDER_SORT_INDEX]} @$order;
|
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[27697] | 449 | } elsif ($self->{'sort'}) {
|
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[15073] | 450 | @sorted_order = sort {$a->[ORDER_SORT_INDEX] cmp $b->[ORDER_SORT_INDEX]} @$order;
|
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[27697] | 451 | } else { # not sorting, don't bother
|
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| 452 | @sorted_order = @$order;
|
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[15073] | 453 | }
|
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[10157] | 454 |
|
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[4] | 455 | my @list = ();
|
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| 456 |
|
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[15889] | 457 | foreach my $OID_order (@sorted_order) {
|
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[10157] | 458 | my $OID = $OID_order->[ORDER_OID_INDEX];
|
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| 459 | my $OID_info = $self->{'info'}->{$OID};
|
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| 460 |
|
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| 461 | push (@list, [$OID_info->[INFO_FILE_INDEX], $OID]);
|
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[4] | 462 | }
|
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| 463 |
|
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| 464 | return \@list;
|
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| 465 | }
|
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| 466 |
|
---|
| 467 |
|
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[20747] | 468 | # returns a list of the form [doc_file,index_status,$sort_meta]
|
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[4] | 469 | sub get_info {
|
---|
| 470 | my $self = shift (@_);
|
---|
| 471 | my ($OID) = @_;
|
---|
| 472 |
|
---|
| 473 | if (defined $self->{'info'}->{$OID}) {
|
---|
| 474 | return $self->{'info'}->{$OID};
|
---|
| 475 | }
|
---|
| 476 |
|
---|
| 477 | return undef;
|
---|
| 478 | }
|
---|
| 479 |
|
---|
| 480 |
|
---|
[20747] | 481 |
|
---|
[98] | 482 | # returns the number of documents so far
|
---|
| 483 | sub size {
|
---|
| 484 | my $self = shift (@_);
|
---|
| 485 | return (scalar(@{$self->{'order'}}));
|
---|
| 486 | }
|
---|
| 487 |
|
---|
[4] | 488 | 1;
|
---|
| 489 |
|
---|