/ 
Sah-Schemas-JSON-0.007
River stage three • 11 direct dependents • 156 total dependents
/ Data::Sah::Filter::perl::JSON::decode_str

NAME

Data::Sah::Filter::perl::JSON::decode_str - Decode from JSON if string, otherwise leave as-is

VERSION

This document describes version 0.007 of Data::Sah::Filter::perl::JSON::decode_str (from Perl distribution Sah-Schemas-JSON), released on 2022-11-15.

SYNOPSIS

Using in Sah schema's prefilters (or postfilters) clause

["str","prefilters",[["JSON::decode_str"]]]

Using with Data::Sah:

use Data::Sah qw(gen_validator);

my $schema = ["str","prefilters",[["JSON::decode_str"]]];
my $validator = gen_validator($schema);
if ($validator->($some_data)) { print 'Valid!' }

Using with Data::Sah:Filter directly:

use Data::Sah::Filter qw(gen_filter);

my $filter = gen_filter([["JSON::decode_str"]]);
# $errmsg will be empty/undef when filtering succeeds
my ($errmsg, $filtered_value) = $filter->($some_data);

Sample data and filtering results

"" # INVALID (String is not a valid JSON: malformed JSON string, neither tag, array, object, number, string or atom, at character offset 0 (before "(end of string)") at (eval 2378) line 8. ), unchanged (Empty string is not valid JSON)
"null" # valid, becomes undef
"[1,2,3]" # valid, becomes [1,2,3]
"\"foo\"" # valid, becomes "foo"
"\"foo" # INVALID (String is not a valid JSON: unexpected end of string while parsing JSON string, at character offset 4 (before "(end of string)") at (eval 2382) line 8. ), unchanged (Invalid JSON, missing closing quote)
{} # valid, unchanged (Not a string, so passed as-is)
undef # valid, unchanged (Not a string, so passed as-is)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Sah-Schemas-JSON.

SOURCE

Source repository is at https://github.com/perlancar/perl-Sah-Schemas-JSON.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2022, 2021 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Sah-Schemas-JSON

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.