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 util;
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31 | use GDBMUtils;
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32 |
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33 | sub new_vs_old_import_diff
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34 | {
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35 | my ($archive_info,$block_hash,$importdir) = @_;
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36 |
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37 | # First convert all files to absolute form
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38 | # This is to support the situation where the import folder is not
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39 | # the default
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40 |
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41 | my $prev_all_files = $archive_info->{'prev_import_filelist'};
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42 | my $full_prev_all_files = {};
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43 |
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44 | foreach my $prev_file (keys %$prev_all_files) {
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45 |
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46 | if (!&util::filename_is_absolute($prev_file)) {
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47 | my $full_prev_file = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},$prev_file);
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48 | $full_prev_all_files->{$full_prev_file} = $prev_file;
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49 | }
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50 | else {
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51 | $full_prev_all_files->{$prev_file} = $prev_file;
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52 | }
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53 | }
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54 |
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55 | # Figure out which are the new files, existing files and so
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56 | # by implication the files from the previous import that are not
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57 | # there any more => mark them for deletion
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58 | foreach my $curr_file (keys %{$block_hash->{'all_files'}}) {
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59 |
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60 | my $full_curr_file = $curr_file;
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61 |
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62 | # entry in 'all_files' is moved to either 'existing_files',
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63 | # 'deleted_files', or 'new_files'
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64 |
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65 | if (!&util::filename_is_absolute($curr_file)) {
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66 | # add in import dir to make absolute
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67 | $full_curr_file = &util::filename_cat($importdir,$curr_file);
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68 | }
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69 |
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70 | # figure of if new file or not
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71 | if (defined $full_prev_all_files->{$full_curr_file}) {
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72 | # had it before
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73 | $block_hash->{'existing_files'}->{$curr_file} = 1;
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74 | # Now remove it, so by end of loop only the files
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75 | # that need deleting are left
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76 |
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77 | delete $full_prev_all_files->{$full_curr_file};
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78 | }
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79 | else {
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80 | $block_hash->{'new_files'}->{$curr_file} = 1;
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81 | }
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82 |
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83 | delete $block_hash->{'all_files'}->{$curr_file};
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84 | }
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85 |
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86 | # By this point full_prev_all_files contains only the files
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87 | # that are not in the current import folder => i.e. files
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88 | # to be deleted
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89 | #
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90 | # The value in each key is its "local" import file name, which is what
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91 | # we want to use
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92 | my @deleted_files = values %$full_prev_all_files;
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93 | map { $block_hash->{'deleted_files'}->{$_} = 1 } @deleted_files;
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94 | }
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95 |
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96 | sub mark_docs_for_deletion
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97 | {
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98 | my ($archive_info,$deleted_files_ref,$archivedir,$verbosity) = @_;
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99 |
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100 | my $db_ext = &util::is_little_endian() ? ".ldb" : ".bdb";
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101 | my $doc_db = "archiveinf-doc$db_ext";
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102 | my $src_db = "archiveinf-src$db_ext";
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103 | my $arcinfo_doc_filename = &util::filename_cat ($archivedir, $doc_db);
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104 | my $arcinfo_src_filename = &util::filename_cat ($archivedir, $src_db);
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105 |
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106 |
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107 | # record files marked for deletion in arcinfo
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108 | foreach my $file (@$deleted_files_ref) {
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109 | # use 'archiveinf-src' GDBM file to look up all the OIDs
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110 | # this file is used in (note in most cases, it's just one OID)
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111 |
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112 | # An improvement would be to have the record read
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113 | # into a hash array
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114 | my $src_rec = GDBMUtils::gdbmRecordToHash($arcinfo_src_filename,$file);
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115 | my $oids = $src_rec->{'oid'};
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116 | foreach my $oid (@$oids) {
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117 |
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118 | # find out if it's an assoc file or main doc
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119 |
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120 | my $doc_rec = GDBMUtils::gdbmRecordToHash($arcinfo_doc_filename,$oid);
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121 | ## print STDERR "file = $file\n";
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122 |
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123 | if ($doc_rec->{'src-file'}->[0] eq $file) {
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124 | # mark it for deletion
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125 | if ($verbosity>1) {
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126 | print STDERR "$oid marked to be deleted\n";
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127 | }
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128 | $archive_info->set_status_info($oid,"D");
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129 |
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130 | my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid);
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131 | $val =~ s/^<index-status>(.*)$/<index-status>D/m;
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132 | &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val);
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133 | }
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134 | else {
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135 | # assoc file => mark it for re-indexing (safest thing to do)
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136 | my $curr_status = $archive_info->get_status_info($oid);
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137 |
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138 |
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139 | if (defined($curr_status) && (($curr_status ne "D") && ($curr_status ne "R"))) {
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140 | if ($verbosity > 1) {
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141 | print STDERR "$oid marked for (potential) reindexing\n";
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142 | print STDERR " (because associated file $file deleted)\n";
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143 | }
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144 | $archive_info->set_status_info($oid,"R");
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145 |
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146 | my $val = &GDBMUtils::gdbmDatabaseGet($arcinfo_doc_filename,$oid);
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147 | $val =~ s/^<index-status>(.*)$/<index-status>R/m;
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148 | &GDBMUtils::gdbmDatabaseSet($arcinfo_doc_filename,$oid,$val);
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149 | }
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150 | }
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151 | }
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152 | }
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153 | }
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154 |
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155 |
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156 |
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157 | 1;
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