/usr/share/perl5/Catmandu/Fix/marc_set.pm is in libcatmandu-marc-perl 0.214-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | package Catmandu::Fix::marc_set;
use Catmandu::Sane;
use Catmandu::Util qw(:is);
use Carp qw(confess);
use Moo;
use Catmandu::Fix::Has;
has marc_path => (fix_arg => 1);
has value => (fix_arg => 1);
has record => (fix_opt => 1);
sub emit {
my ($self,$fixer) = @_;
my $record_key = $fixer->emit_string($self->record // 'record');
my $marc_path = $self->marc_path;
my $field_regex;
my ($field,$ind1,$ind2,$subfield_regex,$from,$to,$len);
if ($marc_path =~ /(\S{3})(\[(.)?,?(.)?\])?([_a-z0-9])?(\/(\d+)(-(\d+))?)?/) {
$field = $1;
$ind1 = $3;
$ind2 = $4;
if (defined $5) {
$subfield_regex = "$5";
}
else {
$subfield_regex = ($field =~ /^LDR|^00/) ? "_" : "a";
}
$from = $7;
$to = $9;
$len = defined $to ? $to - $from + 1 : 1;
}
else {
confess "invalid marc path";
}
my $perl = "";
# Find out if we need to insert a literal value or a value from a JSON path
my $value;
if ($self->value =~ /^\$\.(\S+)$/) {
my $path = $fixer->split_path($1);
my $key = pop @$path;
$value = $fixer->generate_var;
$perl .= $fixer->emit_declare_vars($value, '""');
$perl .= $fixer->emit_walk_path($fixer->var, $path, sub {
my $var = shift;
$fixer->emit_get_key($var, $key, sub {
my $var = shift;
"${value} = ${var};";
});
});
}
else {
$value = $fixer->emit_string($self->value);
}
##############
$field_regex = $field;
$field_regex =~ s/\*/./g;
my $var = $fixer->var;
$perl .= $fixer->emit_foreach("${var}->{${record_key}}", sub {
my $var = shift;
my $perl = "";
$perl .= "next unless is_value ${value};";
$perl .= "next if ${var}->[0] !~ /${field_regex}/;";
if (defined $ind1) {
$perl .= "next if (!defined ${var}->[1] || ${var}->[1] ne '${ind1}');";
}
if (defined $ind2) {
$perl .= "next if (!defined ${var}->[2] || ${var}->[2] ne '${ind2}');";
}
my $i = $fixer->generate_var;
my $set_subfields = sub {
my $start = shift;
my $found = $fixer->generate_var;
my $perl = "my ${found} = 0;".
"for (my ${i} = ${start}; ${i} < \@{${var}}; ${i} += 2) {".
"if (${var}->[${i}] eq '${subfield_regex}') {";
if (defined $from) {
$perl .= "substr(${var}->[${i}+1],$from,$len) = ${value};";
}
else {
$perl .= "${var}->[${i}+1] = ${value};";
}
$perl .= "${found} = 1;";
$perl .= "}".
"}";
$perl .= "if (${found} == 0) {".
"push(\@${var},'${subfield_regex}',${value});".
"}";
$perl;
};
$perl .= "if (${var}->[0] =~ /^LDR|^00/) {";
$perl .= $set_subfields->(3);
# Old Catmandu::MARC contained a bug/feature to allow
# for '_' subfields in non-control elements ..for backwards
# compatibility we ignore them
$perl .= "} elsif (defined ${var}->[5] && ${var}->[5] eq '_') {";
$perl .= $set_subfields->(5);
$perl .= "} else {";
$perl .= $set_subfields->(3);
$perl .= "}";
$perl;
});
$perl;
}
=head1 NAME
Catmandu::Fix::marc_set - set a marc value of one (sub)field to a new value
=head1 SYNOPSIS
# Set a field in the leader
if marc_match('LDR/6','c')
marc_set('LDR/6','p')
end
# Set all the 650-p fields to 'test'
marc_set('650p','test')
# Set the 100-a subfield where indicator-1 is 3
marc_set('100[3]a','Farquhar family.')
# Copy data from another field in a subfield
marc_set('100a','$.my.deep.field')
=head1 DESCRIPTION
Read our Wiki pages at L<https://github.com/LibreCat/Catmandu/wiki/Fixes> for a complete
overview of the Fix language.
=head1 SEE ALSO
L<Catmandu::Fix>
=cut
1;
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