misc/maintenance/MARC21_utf8_flag_fix.pl

   1 #!/usr/bin/perl
   2 #
   3 # Copyright 2009 Liblime
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use strict;
  21 use warnings;
  22
  23 use MARC::Record;
  24 use MARC::File::XML;
  25 use Getopt::Long qw(:config auto_help auto_version);
  26 use Pod::Usage;
  27
  28 use C4::Biblio;
  29 use C4::Charset;
  30 use C4::Context;
  31 use C4::Debug;
  32
  33 use vars qw($VERSION);
  34
  35 BEGIN {
  36     # find Koha's Perl modules
  37     # test carefully before changing this
  38     use FindBin;
  39     eval { require "$FindBin::Bin/../kohalib.pl" };
  40     $VERSION = 0.02;
  41 }
  42
  43 our $debug;
  44
  45 ## OPTIONS
  46 my $help    = 0;
  47 my $man     = 0;
  48 my $verbose = 0;
  49
  50 my $limit;      # undef, not zero.
  51 my $offset  = 0;
  52 my $dump    = 0;
  53 my $summary = 1;
  54 my $fix     = 0;
  55
  56 GetOptions(
  57     'help|?'    => \$help,
  58     'man'       => \$man,
  59     'verbose=i' => \$verbose,
  60     'limit=i'   => \$limit,
  61     'offset=i'  => \$offset,
  62     'dump!'     => \$dump,
  63     'summary!'  => \$summary,
  64     'fix!'      => \$fix,
  65 ) or pod2usage(2);
  66 pod2usage( -verbose => 2 ) if ($man);
  67 pod2usage( -verbose => 2 ) if ($help and $verbose);
  68 pod2usage(1) if $help;
  69
  70 if ($debug) {
  71     $summary++;
  72     $verbose++;
  73 }
  74
  75 my $marcflavour = C4::Context->preference('marcflavour') or die "No marcflavour (MARC21 or UNIMARC) set in syspref";
  76 ($marcflavour eq 'MARC21') or die "marcflavour must be MARC21, not $marcflavour";
  77
  78 my $all = C4::Context->dbh->prepare("SELECT COUNT(*) FROM biblioitems");
  79 $all->execute;
  80 my $total = $all->fetchrow;
  81
  82 my $count_query = "SELECT COUNT(*) FROM biblioitems WHERE substr(marc, 10, 1)  = ?";
  83 my $query       = "SELECT     *    FROM biblioitems WHERE substr(marc, 10, 1) <> ?";
  84
  85 my $sth = C4::Context->dbh->prepare($count_query);
  86 $sth->execute('a');
  87 my $count    = $sth->fetchrow;
  88 my $badcount = $total-$count;
  89
  90 if ($summary) {
  91     print  "# biblioitems with leader/09 = 'a'\n";
  92     printf "# %9s match\n",   $count;
  93     printf "# %9s  BAD \n",   $badcount;
  94     printf "# %9s total\n\n", $total;
  95     printf "# Examining %s BAD record(s), offset %d:\n", ($limit || 'all'), $offset;
  96 }
  97
  98 my $bad_recs = C4::Context->dbh->prepare($query);
  99 $bad_recs->execute('a');
 100 $limit or $limit = $bad_recs->rows();   # limit becomes max if unspecified
 101 $limit += $offset if $offset;           # increase limit for offset
 102 my $i = 0;
 103
 104 MARC::File::XML->default_record_format($marcflavour) or die "FAILED MARC::File::XML->default_record_format($marcflavour)";
 105
 106 while ( my $row = $bad_recs->fetchrow_hashref() ) {
 107     (++$i > $limit) and last;
 108     (  $i > $offset) or next;
 109     my $xml = $row->{marcxml};
 110     $xml =~ s/.*(\<leader\>)/$1/s;
 111     $xml =~ s/(\<\/leader\>).*/$1/s;
 112     # $xml now pared down to just the <leader> element
 113     printf "# %4d of %4d: biblionumber %s : %s\n", $i, $badcount, $row->{biblionumber}, $xml;
 114     my $stripped = StripNonXmlChars($row->{marcxml});
 115     ($stripped eq $row->{marcxml}) or printf STDERR "%d NON-XML Characters removed!!\n", (length($row->{marcxml}) - length($stripped));
 116     my $record = eval { MARC::Record::new_from_xml( $stripped, 'utf8', $marcflavour ) };
 117     if ($@ or not $record) {
 118         print STDERR "ERROR in MARC::Record::new_from_xml(\$marcxml, 'utf8', $marcflavour): $@\n\tSkipping $row->{biblionumber}\n";
 119         next;
 120     }
 121     if ($fix) {
 122         SetMarcUnicodeFlag($record, $marcflavour);
 123         if (ModBiblioMarc($record, $row->{biblionumber})) {
 124             printf "# %4d of %4d: biblionumber %s : <leader>%s</leader>\n", $i, $badcount, $row->{biblionumber}, $record->leader();
 125         } else {
 126             print STDERR "ERROR in ModBiblioMarc(\$record, $row->{biblionumber})\n";
 127         }
 128     }
 129     $dump and print $row->{marcxml}, "\n";
 130 }
 131
 132 __END__
 133
 134 =head1 NAME
 135
 136 MARC21_utf8_flag_fix.pl - Repair missing leader position 9 value ("a" for MARC21 - UTF8).
 137
 138 =head1 SYNOPSIS
 139
 140 MARC21_utf8_flag_fix.pl [ -h | -m ] [ -v ] [ -d ] [ -s ] [ -l N ] [ -o N ] [ -f ]
 141
 142  Help Options:
 143    -h --help -?   Brief help message
 144    -m --man       Full documentation, same as --help --verbose
 145       --version   Prints version info
 146
 147  Feedback Options:
 148    -d --dump      Dump MARCXML of biblioitems processed, default OFF
 149    -s --summary   Print initial summary of good and bad biblioitems counted, default ON
 150    -v --verbose   Increase verbosity of output, default OFF
 151
 152  Run Options:
 153    -f --fix       Save repaired leaders to biblioitems.marcxml,
 154    -l --limit     Number of biblioitems to display or fix
 155    -o --offset    Number of biblioitems to skip (not displayed or fixed)
 156
 157 =head1 OPTIONS
 158
 159 =over 8
 160
 161 =item B<--fix>
 162
 163 This is the most important option.  Without it, the script just tells you about the problem records.
 164 With --fix, the script fixes the same records.
 165
 166 =item B<--limit=N>
 167
 168 Like a LIMIT statement in SQL, this constrains the number of records targeted by the script to an integer N.
 169 The default is to target all records with bad leaders.
 170
 171 =item B<--offset=N>
 172
 173 Like an OFFSET statement in SQL, this tells the script to skip N of the targeted records.
 174 The default is 0, i.e. skip none of them.
 175
 176 =back
 177
 178 The binary ON/OFF options can be negated like:
 179    B<--nosummary>   Do not display summary.
 180    B<--nodump>      Do not dump MARCXML.
 181    B<--nofix>       Do not change any records.  This is the default mode.
 182
 183 =head1 DESCRIPTION
 184
 185 Koha expects to have all MARXML records internalized in UTF-8 encoding.  This
 186 presents a problem when records have been inserted with the leader/09 showing
 187 blank for MARC8 encoding.  This script is used to determine the extent of the
 188 problem and to fix the affected leaders.
 189
 190 As the name suggests, this script is only useful for MARC21 and will die for marcflavour UNIMARC.
 191
 192 Run MARC21_utf8_flag_fix.pl the first time with no options, and assuming you agree that the leaders
 193 presented need fixing, run it again with B<--fix>.
 194
 195 =head1 USAGE EXAMPLES
 196
 197 B<MARC21_utf8_flag_fix.pl>
 198
 199 In the most basic form, displays summary of biblioitems examined
 200 and the leader from any found without /09 = a.
 201
 202 B<MARC21_utf8_flag_fix.pl --fix>
 203
 204 Fixes the same biblioitems, displaying summary and each leader before/after change.
 205
 206 B<MARC21_utf8_flag_fix.pl --limit=3 --offset=15 --nosummary --dump>
 207
 208 Dumps MARCXML from the 16th, 17th and 18th bad records found.
 209
 210 B<MARC21_utf8_flag_fix.pl -l 3 -o 15 -s 0 -d>
 211
 212 Same thing as previous example in terse form.
 213
 214 =head1 TO DO
 215
 216 Allow biblionumbers to be piped into STDIN as the selection mechanism.
 217
 218 =head1 SEE ALSO
 219
 220 C4::Biblio
 221
 222 =cut