| 1 | ###########################################################################
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| 2 | #
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| 3 | # inexport.pm -- useful utilities to support import.pl and export.pl
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 | package inexport;
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| 27 |
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| 28 | use strict;
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| 29 |
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| 30 | use File::Basename;
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| 31 |
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| 32 | use util;
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| 33 | use GDBMUtils;
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| 34 |
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| 35 |
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| 36 | sub prime_doc_oid_count
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| 37 | {
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| 38 | my ($archivedir) = @_;
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| 39 | my $oid_count_filename = &util::filename_cat ($archivedir, "OIDcount");
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| 40 |
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| 41 | if (-e $oid_count_filename) {
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| 42 | if (open(OIDIN,"<$oid_count_filename")) {
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| 43 | my $OIDcount = <OIDIN>;
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| 44 | chomp $OIDcount;
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| 45 | close(OIDIN);
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| 46 |
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| 47 | $doc::OIDcount = $OIDcount;
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| 48 | }
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| 49 | else {
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| 50 |
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| 51 | print STDERR "Warning: unable to read document OID count from $oid_count_filename\n";
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| 52 | print STDERR "Setting value to 0\n";
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | }
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| 57 |
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| 58 | sub store_doc_oid_count
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| 59 | {
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| 60 | # Use the file "OIDcount" in the archives directory to record
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| 61 | # what value doc.pm got up to
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| 62 |
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| 63 | my ($archivedir) = @_;
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| 64 | my $oid_count_filename = &util::filename_cat ($archivedir, "OIDcount");
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| 65 |
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| 66 |
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| 67 | if (open(OIDOUT,">$oid_count_filename")) {
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| 68 | print OIDOUT $doc::OIDcount, "\n";
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| 69 |
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| 70 | close(OIDOUT);
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| 71 | }
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| 72 | else {
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| 73 | print STDERR "Warning: unable to store document OID count\n";
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| 74 | }
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| 75 | }
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| 76 |
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| 77 |
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| 78 |
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| 79 | sub new_vs_old_import_diff
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| 80 | {
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| 81 | my ($archive_info,$block_hash,$importdir) = @_;
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| 82 |
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| 83 | # First convert all files to absolute form
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| 84 | # This is to support the situation where the import folder is not
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| 85 | # the default
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| 86 |
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| 87 | my $prev_all_files = $archive_info->{'prev_import_filelist'};
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| 88 | my $full_prev_all_files = {};
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| 89 |
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| 90 | foreach my $prev_file (keys %$prev_all_files) {
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| 91 |
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| 92 | if (!&util::filename_is_absolute($prev_file)) {
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| 93 | my $full_prev_file = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},$prev_file);
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| 94 | $full_prev_all_files->{$full_prev_file} = $prev_file;
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| 95 | }
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| 96 | else {
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| 97 | $full_prev_all_files->{$prev_file} = $prev_file;
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| 98 | }
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| 99 | }
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| 100 |
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| 101 |
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| 102 | # Figure out which are the new files, existing files and so
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| 103 | # by implication the files from the previous import that are not
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| 104 | # there any more => mark them for deletion
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| 105 | foreach my $curr_file (keys %{$block_hash->{'all_files'}}) {
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| 106 |
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| 107 | my $full_curr_file = $curr_file;
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| 108 |
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| 109 | # entry in 'all_files' is moved to either 'existing_files',
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| 110 | # 'deleted_files', or 'new_files'
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| 111 |
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| 112 | if (!&util::filename_is_absolute($curr_file)) {
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| 113 | # add in import dir to make absolute
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| 114 | $full_curr_file = &util::filename_cat($importdir,$curr_file);
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| 115 | }
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| 116 |
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| 117 | if (defined $block_hash->{'file_blocks'}->{$full_curr_file}) {
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| 118 | # If in block list, we want to ignore it
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| 119 | delete $block_hash->{'all_files'}->{$curr_file};
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| 120 |
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| 121 | if (defined $full_prev_all_files->{$full_curr_file}) {
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| 122 | # also make sure it is gone from 'previous' list so
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| 123 | # not mistaken for a file that needs to be deleted
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| 124 | delete $full_prev_all_files->{$full_curr_file};
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| 125 | }
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| 126 | next;
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| 127 | }
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| 128 |
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| 129 | # figure out if new file or not
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| 130 | if (defined $full_prev_all_files->{$full_curr_file}) {
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| 131 |
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| 132 | # had it before
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| 133 | $block_hash->{'existing_files'}->{$full_curr_file} = 1;
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| 134 |
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| 135 | # Now remove it, so by end of loop only the files
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| 136 | # that need deleting are left
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| 137 |
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| 138 | delete $full_prev_all_files->{$full_curr_file};
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| 139 | }
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| 140 | else {
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| 141 | $block_hash->{'new_files'}->{$full_curr_file} = 1;
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| 142 | }
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| 143 |
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| 144 | delete $block_hash->{'all_files'}->{$curr_file};
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| 145 | }
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| 146 |
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| 147 | # By this point full_prev_all_files contains the files
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| 148 | # mentioned in archiveinf-src.db but are not in the 'import'
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| 149 | # folder (or whatever was specified through -importdir ...)
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| 150 |
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| 151 | # This list can contain files that were created in the 'tmp' or
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| 152 | # 'cache' areas (such as screen-size and thumbnail images).
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| 153 | #
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| 154 | # In building the final list of files to delete, we test to see if
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| 155 | # it exists on the filesystem and if it does (unusual for a file
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| 156 | # that's allegedly deleted!), supress it from going into the final
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| 157 | # list
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| 158 |
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| 159 | my $collectdir = $ENV{'GSDLCOLLECTDIR'};
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| 160 |
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| 161 | my @deleted_files = values %$full_prev_all_files;
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| 162 | map { my $curr_file = $_;
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| 163 | my $full_curr_file = $curr_file;
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| 164 |
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| 165 | if (!&util::filename_is_absolute($curr_file)) {
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| 166 | # add in import dir to make absolute
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| 167 |
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| 168 | $full_curr_file = &util::filename_cat($collectdir,$curr_file);
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| 169 | }
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| 170 |
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| 171 |
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| 172 | if (!-e $full_curr_file) {
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| 173 | $block_hash->{'deleted_files'}->{$curr_file} = 1;
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| 174 | }
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| 175 | } @deleted_files;
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| 176 | }
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| 177 |
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| 178 |
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| 179 | sub is_assoc_file
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| 180 | {
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| 181 | my ($file,$doc_rec) = @_;
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| 182 |
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| 183 | my ($file_root,$dirname,$suffix) = fileparse($file, "\\.[^\\.]+\$");
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| 184 |
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| 185 | foreach my $af (@{$doc_rec->{'assoc-file'}}) {
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| 186 | my $full_af = &util::filename_cat($dirname,$af);
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| 187 |
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| 188 | return 1 if ($full_af eq $file);
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| 189 | }
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| 190 |
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| 191 | return 0;
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| 192 | }
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| 193 |
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| 194 |
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| 195 | sub _mark_docs_for_deletion
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| 196 | {
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| 197 | my ($archive_info,$block_hash,$deleted_files,$archivedir,$verbosity,$mode_text) = @_;
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| 198 |
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| 199 | my $doc_db = "archiveinf-doc.gdb";
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| 200 | my $src_db = "archiveinf-src.gdb";
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| 201 | my $arcinfo_doc_filename = &util::filename_cat ($archivedir, $doc_db);
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| 202 | my $arcinfo_src_filename = &util::filename_cat ($archivedir, $src_db);
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| 203 |
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| 204 |
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| 205 | # record files marked for deletion in arcinfo
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| 206 | foreach my $file (@$deleted_files) {
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| 207 | # use 'archiveinf-src' GDBM file to look up all the OIDs
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| 208 | # that this file is used in (note in most cases, it's just one OID)
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| 209 |
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| 210 | my $src_rec = GDBMUtils::gdbmRecordToHash($arcinfo_src_filename,$file);
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| 211 | my $oids = $src_rec->{'oid'};
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| 212 | foreach my $oid (@$oids) {
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| 213 |
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| 214 | # Find out if it's a main doc, assoc file, or metadata
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| 215 |
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| 216 | my $doc_rec = GDBMUtils::gdbmRecordToHash($arcinfo_doc_filename,$oid);
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| 217 |
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| 218 | if (is_assoc_file($file,$doc_rec)) {
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| 219 | # assoc file => mark it for re-indexing (safest thing to do)
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| 220 | my $curr_status = $archive_info->get_status_info($oid);
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| 221 |
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| 222 |
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| 223 | if (defined($curr_status) && (($curr_status ne "D") && ($curr_status ne "R"))) {
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| 224 | if ($verbosity > 1) {
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| 225 | print STDERR "$oid marked for (potential) reindexing\n";
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| 226 | print STDERR " (because associated file $file deleted)\n";
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| 227 | }
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| 228 | $archive_info->set_status_info($oid,"R");
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| 229 |
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| 230 | my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid);
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| 231 | $val =~ s/^<index-status>(.*)$/<index-status>R/m;
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| 232 | &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val);
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| 233 | }
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| 234 | GDBMUtils::gdbmDatabaseRemove($arcinfo_src_filename,$file);
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| 235 | }
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| 236 | else {
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| 237 | # either src-file or metadata.xml file linking to src-file
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| 238 |
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| 239 | my $src_file;
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| 240 |
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| 241 | if ($doc_rec->{'src-file'}->[0] ne $file) {
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| 242 | # it's a metadata file attached to this OID
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| 243 | # => workout the src-file it matches to
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| 244 |
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| 245 | $src_file = $doc_rec->{'src-file'}->[0];
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| 246 |
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| 247 | my $src_filename = $src_file;
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| 248 | if (!&util::filename_is_absolute($src_file)) {
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| 249 | $src_filename = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},$src_file);
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| 250 | }
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| 251 |
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| 252 | $block_hash->{'reindex_files'}->{$src_filename} = 1;
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| 253 |
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| 254 | # remove the metadata file from the src-database
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| 255 | GDBMUtils::gdbmDatabaseRemove($arcinfo_src_filename,$file);
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| 256 | }
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| 257 | else {
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| 258 | # It's the main doc
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| 259 | # => make it the target and mark it for deletion
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| 260 | $src_file = $file;
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| 261 | }
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| 262 |
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| 263 | # Whether the main file directly or indirectly, mark for deletion/reindex
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| 264 |
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| 265 | my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid);
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| 266 | my ($index_status) = ($val =~ m/^<index-status>(.*)$/m);
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| 267 |
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| 268 |
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| 269 | if ($index_status ne "D") {
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| 270 | if ($verbosity>1) {
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| 271 | print STDERR "$oid ($src_file) marked to be $mode_text on next buildcol.pl\n";
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| 272 | }
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| 273 | $archive_info->set_status_info($oid,"D");
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| 274 |
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| 275 | $val =~ s/^<index-status>(.*)$/<index-status>D/m;
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| 276 | &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val);
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| 277 |
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| 278 | GDBMUtils::gdbmDatabaseRemove($arcinfo_src_filename,$src_file);
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| 279 | }
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| 280 |
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| 281 |
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| 282 | }
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| 283 |
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| 284 | }
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| 285 | }
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| 286 | }
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| 287 |
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| 288 |
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| 289 | sub mark_docs_for_deletion
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| 290 | {
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| 291 | _mark_docs_for_deletion(@_,"deleted from index");
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| 292 | }
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| 293 |
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| 294 |
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| 295 | sub mark_docs_for_reindex
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| 296 | {
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| 297 | my ($archive_info,$block_hash,$archivedir,$verbosity) = @_;
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| 298 |
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| 299 | # Reindexing is accomplished by deleting the previously indexed
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| 300 | # version of the document, and then allowing the new version to
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| 301 | # be indexed (as would a new document be indexed).
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| 302 | #
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| 303 | # The first step (marking for deletion) is implemented by this routine.
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| 304 | #
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| 305 | # By default in Greenstone a new version of an index will hash to
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| 306 | # a new unique OID, and the above strategy of reindex=delete+add
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| 307 | # works fine. A special case arises when a persistent OID is
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| 308 | # allocated to a document (for instance through a metadata field),
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| 309 | # and the second step to reindexing (see XXXX) detects this and
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| 310 | # deals with it appropriately.
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| 311 |
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| 312 | my @existing_files = sort keys %{$block_hash->{'existing_files'}};
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| 313 |
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| 314 | my $doc_db = "archiveinf-doc.gdb";
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| 315 | my $arcinfo_doc_filename = &util::filename_cat ($archivedir, $doc_db);
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| 316 |
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| 317 | my $archiveinf_timestamp = -M $arcinfo_doc_filename;
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| 318 |
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| 319 | my $reindex_files = [];
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| 320 |
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| 321 | foreach my $existing_filename (@existing_files) {
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| 322 |
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| 323 | if (-M $existing_filename < $archiveinf_timestamp) {
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| 324 | # file is newer than last build
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| 325 |
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| 326 | my $existing_file = $existing_filename;
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| 327 | my $collectdir = &util::filename_cat($ENV{'GSDLCOLLECTDIR'});
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| 328 |
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| 329 | my $collectdir_resafe = &util::filename_to_regex($collectdir);
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| 330 | $existing_file =~ s/^$collectdir_resafe(\\|\/)?//;
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| 331 |
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| 332 | ### print STDERR "**** Deleting existing file: $existing_file\n";
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| 333 |
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| 334 | push(@$reindex_files,$existing_file);
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| 335 | $block_hash->{'reindex_files'}->{$existing_filename} = 1;
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| 336 | }
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| 337 |
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| 338 | }
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| 339 |
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| 340 | _mark_docs_for_deletion($archive_info,$block_hash,$reindex_files,$archivedir,$verbosity, "reindex");
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| 341 |
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| 342 | }
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| 343 |
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| 344 |
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| 345 |
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| 346 | 1;
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