########################################################################### # # inexport.pm -- useful utilities to support import.pl and export.pl # A component of the Greenstone digital library software # from the New Zealand Digital Library Project at the # University of Waikato, New Zealand. # # Copyright (C) 1999 New Zealand Digital Library Project # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. # ########################################################################### package inexport; use strict; use File::Basename; use util; use GDBMUtils; sub new_vs_old_import_diff { my ($archive_info,$block_hash,$importdir) = @_; # First convert all files to absolute form # This is to support the situation where the import folder is not # the default my $prev_all_files = $archive_info->{'prev_import_filelist'}; my $full_prev_all_files = {}; foreach my $prev_file (keys %$prev_all_files) { if (!&util::filename_is_absolute($prev_file)) { my $full_prev_file = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},$prev_file); $full_prev_all_files->{$full_prev_file} = $prev_file; } else { $full_prev_all_files->{$prev_file} = $prev_file; } } # Figure out which are the new files, existing files and so # by implication the files from the previous import that are not # there any more => mark them for deletion foreach my $curr_file (keys %{$block_hash->{'all_files'}}) { my $full_curr_file = $curr_file; # entry in 'all_files' is moved to either 'existing_files', # 'deleted_files', or 'new_files' if (!&util::filename_is_absolute($curr_file)) { # add in import dir to make absolute $full_curr_file = &util::filename_cat($importdir,$curr_file); } if (defined $block_hash->{'file_blocks'}->{$full_curr_file}) { # If in block list, we want to ignore it delete $block_hash->{'all_files'}->{$curr_file}; if (defined $full_prev_all_files->{$full_curr_file}) { # also make sure it is gone from 'previous' list so # not mistaken for a file that needs to be deleted delete $full_prev_all_files->{$full_curr_file}; } next; } # figure of if new file or not if (defined $full_prev_all_files->{$full_curr_file}) { # had it before $block_hash->{'existing_files'}->{$full_curr_file} = 1; # Now remove it, so by end of loop only the files # that need deleting are left delete $full_prev_all_files->{$full_curr_file}; } else { $block_hash->{'new_files'}->{$full_curr_file} = 1; } delete $block_hash->{'all_files'}->{$curr_file}; } # By this point full_prev_all_files contains the files # mentioned in archiveinf-src.db but are not in the 'import' # folder (or whatever was specified through -importdir ...) # This list can contain files that were created in the 'tmp' or # 'cache' areas (such as screen-size and thumbnail images). # # In building the final list of files to delete, we test to see if # it exists on the filesystem and if it does (unusual for a file # that's allegedly deleted!) , supress it from going into the final # list my $collectdir = $ENV{'GSDLCOLLECTDIR'}; my @deleted_files = values %$full_prev_all_files; map { my $curr_file = $_; my $full_curr_file = $curr_file; if (!&util::filename_is_absolute($curr_file)) { # add in import dir to make absolute $full_curr_file = &util::filename_cat($collectdir,$curr_file); } if (!-e $full_curr_file) { $block_hash->{'deleted_files'}->{$curr_file} = 1; } } @deleted_files; } sub mark_docs_for_deletion { my ($archive_info,$deleted_files_ref,$archivedir,$verbosity) = @_; my $db_ext = &util::is_little_endian() ? ".ldb" : ".bdb"; my $doc_db = "archiveinf-doc$db_ext"; my $src_db = "archiveinf-src$db_ext"; my $arcinfo_doc_filename = &util::filename_cat ($archivedir, $doc_db); my $arcinfo_src_filename = &util::filename_cat ($archivedir, $src_db); # record files marked for deletion in arcinfo foreach my $file (@$deleted_files_ref) { # use 'archiveinf-src' GDBM file to look up all the OIDs # this file is used in (note in most cases, it's just one OID) my $src_rec = GDBMUtils::gdbmRecordToHash($arcinfo_src_filename,$file); my $oids = $src_rec->{'oid'}; foreach my $oid (@$oids) { # Find out if it's an assoc file or main doc my $doc_rec = GDBMUtils::gdbmRecordToHash($arcinfo_doc_filename,$oid); if ($doc_rec->{'src-file'}->[0] eq $file) { # It's the main doc # => mark it for deletion if ($verbosity>1) { print STDERR "$oid marked to be deleted from index on next buildcol.pl\n"; } $archive_info->set_status_info($oid,"D"); my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid); my ($index_status) = ($val =~ m/^(.*)$/m); if ($index_status ne "D") { $val =~ s/^(.*)$/D/m; &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val); my $doc_file = $doc_rec->{'doc-file'}->[0]; my $doc_filename = &util::filename_cat($archivedir,$doc_file); my ($doc_tailname, $doc_dirname, $suffix) = File::Basename::fileparse($doc_filename, "\\.[^\\.]+\$"); print STDERR "Removing $doc_dirname\n" if ($verbosity>2); &util::rm_r($doc_dirname); } } else { # assoc file => mark it for re-indexing (safest thing to do) my $curr_status = $archive_info->get_status_info($oid); if (defined($curr_status) && (($curr_status ne "D") && ($curr_status ne "R"))) { if ($verbosity > 1) { print STDERR "$oid marked for (potential) reindexing\n"; print STDERR " (because associated file $file deleted)\n"; } $archive_info->set_status_info($oid,"R"); my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid); $val =~ s/^(.*)$/R/m; &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val); } } GDBMUtils::gdbmDatabaseRemove($arcinfo_src_filename,$file); } } } sub mark_docs_for_reindex { my ($archive_info,$existing_files_ref,$archivedir,$verbosity) = @_; # Reindexing is accomplished by deleting the previously indexed # version of the document, and then allowing the new version to # be indexed (as would a new document be indexed). # # The first step (marking for deletion) is implemented by this routine. # # By default in Greenstone a new version of an index will hash to # a new unique OID, and the above strategy of reindex=delete+add # works fine. A special case arises when a persistent OID is # allocated to a document (for instance through a metadata field), # and the second step to reindexing (see XXXX) detects this and # deals with it appropriately. my $db_ext = &util::is_little_endian() ? ".ldb" : ".bdb"; my $doc_db = "archiveinf-doc$db_ext"; my $arcinfo_doc_filename = &util::filename_cat ($archivedir, $doc_db); my $archiveinf_timestamp = -M $arcinfo_doc_filename; my $reindex_files_ref = []; foreach my $existing_filename (@$existing_files_ref) { if (-M $existing_filename < $archiveinf_timestamp) { # file is newer than last build my $existing_file = $existing_filename; my $collectdir = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}); $existing_file =~ s/^$collectdir(\\|\/)?//; print STDERR "**** Deleting existing file: $existing_file\n"; push(@$reindex_files_ref,$existing_file); } } mark_docs_for_deletion($archive_info,$reindex_files_ref,$archivedir,$verbosity); return @$reindex_files_ref; } 1;