Man page - json_pp(1)

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JSON_PP(1) Perl Programmers Reference Guide JSON_PP(1)

json_pp - JSON::PP command utility

    json_pp [-v] [-f from_format] [-t to_format] [-json_opt options_to_json1[,options_to_json2[,...]]]

json_pp converts between some input and output formats (one of them is JSON). This program was copied from json_xs and modified.

The default input format is json and the default output format is json with pretty option.

    -f from_format

Reads a data in the given format from STDIN.

Format types:

as JSON
as Perl code

Writes a data in the given format to STDOUT.

no action.
as JSON
as Data::Dumper

options to JSON::PP

Acceptable options are:

    ascii latin1 utf8 pretty indent space_before space_after relaxed canonical allow_nonref
    allow_singlequote allow_barekey allow_bignum loose escape_slash indent_length

Multiple options must be separated by commas:

    Right: -json_opt pretty,canonical
    Wrong: -json_opt pretty -json_opt canonical

Verbose option, but currently no action in fact.

Prints version and exits.

    $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
       json_pp -f json -t dumper -json_opt pretty,utf8,allow_bignum
    
    $VAR1 = {
              'bar' => bless( {
                                'value' => [
                                             '0000000',
                                             '0000000',
                                             '5678900',
                                             '1234'
                                           ],
                                'sign' => '+'
                              }, 'Math::BigInt' ),
              'foo' => "\x{3042}\x{3044}"
            };
    $ perl -e'print q|{"foo":"あい","bar":1234567890000000000000000}|' |\
       json_pp -f json -t dumper -json_opt pretty
    
    $VAR1 = {
              'bar' => '1234567890000000000000000',
              'foo' => "\x{e3}\x{81}\x{82}\x{e3}\x{81}\x{84}"
            };

JSON::PP, json_xs

Makamaka Hannyaharamitu, <makamaka[at]cpan.org>

Copyright 2010 by Makamaka Hannyaharamitu

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

2025-07-27 perl v5.40.1