NAME

Catmandu::Fix::marc_cut - cut marc data in a structured way to a new field

SYNOPSIS

    # Cut the 001 field out of the MARC record into the fixed001
    marc_cut(001, fixed001)

    # Cut all 650 fields out of the MARC record into the subjects array
    marc_cut(650, subjects)

DESCRIPTION

This Fix work like Catmandu::Fix::marc_copy except it will also remove all mathincg fields from the MARC record

METHODS

marc_cut(MARC_PATH, JSON_PATH, [equals: REGEX])

Cut this MARC fields referred by a MARC_PATH to a JSON_PATH.

When the MARC_PATH points to a MARC tag then only the fields mathching the MARC tag will be copied. When the MATCH_PATH contains indicators or subfields, then only the MARC_FIELDS which contain data in these subfields will be copied. Optional, a equals regular expression can be provided that should match the subfields that need to be copied:

    # Cut all the 300 fields
    marc_cut(300,tmp)

    # Cut all the 300 fields with indicator 1 = 1
    marc_cut(300[1],tmp)

    # Cut all the 300 fields which have subfield c
    marc_cut(300c,tmp)

    # Cut all the 300 fields which have subfield c equal to 'ABC'
    marc_cut(300c,tmp,equal:"^ABC")

JSON PATHS

Catmandu Fixes can be used to edit the data in the cut fields. To have easy access to the data in the copied fields, these JSON paths can be used (where VAR is the name of field into which you copied the data)

    VAR.*.tag       - The names of all MARC tags
    VAR.*.ind1      - All first indicators
    VAR.*.ind2      - All second indicators
    VAR.*.subfields.*.a - The value of all $a subfields
    VAR.*.subfields.$first.a - The value of the first $a subfield
    VAR.*.subfields.$last.a - The value of the last $a subfield
    VAR.*.content   - The value of the first control field

    VAR.$first.subfields.$first.z - The value of the second $z subfield in the first MARC field

These JSON paths can be used like:

    # Set the first indicator of all 300 fields
    do marc_each()
      if marc_has(300)
        marc_cut(300,tmp)

        # Set the first indicator to 1
        set_field(tmp.*.ind1,1)

        marc_paste(tmp)
      end
    end

INLINE

This Fix can be used inline in a Perl script:

    use Catmandu::Fix::marc_copy as => 'marc_cut';

    my $data = { record => ['650', ' ', 0, 'a', 'Perl'] };

    $data = marc_cut($data,'650','subject');

    print $data->{subject}->[0]->{tag} , "\n"; # '650'
    print $data->{subject}->[0]->{ind1} , "\n"; # ' '
    print $data->{subject}->[0]->{ind2} , "\n"; # 0
    print $data->{subject}->[0]->{subfields}->[0]->{a} , "\n"; # 'Perl'

SEE ALSO

• Catmandu::Fix::marc_copy

• Catmandu::Fix::marc_paste

LICENSE AND COPYRIGHT

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.