Catmandu::Fix::cmd - pipe data to be fixed through an external process

Author

       Nicolas Steenlant, "<nicolas.steenlant at ugent.be>"

Description

       This fix passes data as a JSON object to an external process over stdin and reads a JSON object from it's
       stdout.

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.

perl v5.36.0                                       2023-02-04                            Catmandu::Fix::cmd(3pm)

Name

       Catmandu::Fix::cmd - pipe data to be fixed through an external process

Synopsis

           my $fixer = Catmandu::Fix->new(fixes => [
               # pipe data through the jq command-line json processor
               # keeping only the title field
               'cmd("jq -c -M {title}")',
               # ...
           ]);

           # a canonical external program in perl
           use JSON;
           while (<STDIN>) {
               my $data = decode_json($_);
               # ...
               print encode_json($data);
           }