To check data against this schema (requires Data::Sah):
use Data::Sah qw(gen_validator); my \$validator = gen_validator("$sch_name*"); say \$validator->(\$data) ? "valid" : "INVALID!";
The above validator returns a boolean result (true if data is valid, false if otherwise). To return an error message string instead (empty string if data is valid, a non-empty error message otherwise):
my \$validator = gen_validator("$sch_name", {return_type=>'str_errmsg'}); my \$errmsg = \$validator->(\$data); _ my $v = Data::Sah::gen_validator($sch, {return_type=>"str_errmsg"}); if ($random_valid_eg) { push @pod, " \n"; push @pod, " # a sample valid data\n"; push @pod, " \$data = ".Data::Dmp::dmp($random_valid_eg->{value}).";\n"; push @pod, " my \$errmsg = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_valid_eg->{value}))."\n"; } if ($random_invalid_eg) { push @pod, " \n"; push @pod, " # a sample invalid data\n"; push @pod, " \$data = ".Data::Dmp::dmp($random_invalid_eg->{value}).";\n"; push @pod, " my \$errmsg = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_invalid_eg->{value}))."\n"; } push @pod, <<"_";
Often a schema has coercion rule or default value rules, so after validation the validated value will be different from the original. To return the validated (set-as-default, coerced, prefiltered) value:
my \$validator = gen_validator("$sch_name", {return_type=>'str_errmsg+val'}); my \$res = \$validator->(\$data); # [\$errmsg, \$validated_val] _ $v = Data::Sah::gen_validator($sch, {return_type=>"str_errmsg+val"}); if ($random_valid_eg) { push @pod, " \n"; push @pod, " # a sample valid data\n"; push @pod, " \$data = ".Data::Dmp::dmp($random_valid_eg->{value}).";\n"; push @pod, " my \$res = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_valid_eg->{value}))."\n"; } if ($random_invalid_eg) { push @pod, " \n"; push @pod, " # a sample invalid data\n"; push @pod, " \$data = ".Data::Dmp::dmp($random_invalid_eg->{value}).";\n"; push @pod, " my \$res = \$validator->(\$data); # => ".Data::Dmp::dmp($v->($random_invalid_eg->{value}))."\n"; } push @pod, <<"_";
Data::Sah can also create validator that returns a hash of detailed error message. Data::Sah can even create validator that targets other language, like JavaScript, from the same schema. Other things Data::Sah can do: show source code for validator, generate a validator code with debug comments and/or log statements, generate human text from schema. See its documentation for more details.
To validate function parameters against this schema (requires Params::Sah):
use Params::Sah qw(gen_validator); sub myfunc { my \@args = \@_; state \$validator = gen_validator("$sch_name*"); \$validator->(\\\@args); ... }
To specify schema in Rinci function metadata and use the metadata with Perinci::CmdLine (Perinci::CmdLine::Lite) to create a CLI:
# in lib/MyApp.pm package MyApp; our \%SPEC; \$SPEC{myfunc} = { v => 1.1, summary => 'Routine to do blah ...', args => { arg1 => { summary => 'The blah blah argument', schema => ['$sch_name*'], }, ... }, }; sub myfunc { my \%args = \@_; ... } 1; # in myapp.pl package main; use Perinci::CmdLine::Any; Perinci::CmdLine::Any->new(url=>'/MyApp/myfunc')->run; # in command-line % ./myapp.pl --help myapp - Routine to do blah ... ... % ./myapp.pl --version % ./myapp.pl --arg1 ...
To validate some data on the CLI, you can use validate-with-sah utility. Specify the schema as the first argument (encoded in Perl syntax) and the data to validate as the second argument (encoded in Perl syntax):
% validate-with-sah '"$sch_name*"' '"data..."'
validate-with-sah has several options for, e.g. validating multiple data, showing the generated validator code (Perl/JavaScript/etc), or loading schema/data from file. See its manpage for more details.
validate-with-sah
_ (my $type_name = $sch_name) =~ s/(\A\w)|(::|_)(\w)/defined($3) ? uc($3) : uc($1)/eg;
push @pod, <<"_";
To create a type constraint and type library from a schema (requires Type::Tiny as well as Type::FromSah):
package My::Types { use Type::Library -base; use Type::FromSah qw( sah2type ); __PACKAGE__->add_type( sah2type('$sch_name*', name=>'$type_name') ); } use My::Types qw($type_name); $type_name->assert_valid(\$data);
_ }
$self->add_text_to_section( $document, join("", @pod), 'SYNOPSIS', {ignore => 1}, ); } # add POD section: DESCRIPTION { last unless $sch->[1]{description}; require Markdown::To::POD; my @pod; push @pod, Markdown::To::POD::markdown_to_pod( $sch->[1]{description}), "\n\n"; $self->add_text_to_section( $document, join("", @pod), 'DESCRIPTION', {ignore => 1}, ); } $self->log(["Generated POD for '%s'", $filename]); # add POD section: SEE ALSO { my $links = $sch->[1]{links}; next unless $links && @$links; my @pod; require String::PodQuote; for my $link (@$links) { my $url = $link->{url}; $url =~ s/^(prog|pm)://; push @pod, "L<$url>", ($link->{summary} ? " - ".String::PodQuote::pod_quote($link->{summary}) : ""), "\n\n"; } $self->add_text_to_section( $document, join('', @pod), 'SEE ALSO', {after_section => ['DESCRIPTION']}, ); } } # Sah::Schema::* } }
1; # ABSTRACT: Plugin to use when building Sah::Schemas::* distribution
__END__
Pod::Weaver::Plugin::Sah::Schemas - Plugin to use when building Sah::Schemas::* distribution
This document describes version 0.079 of Pod::Weaver::Plugin::Sah::Schemas (from Perl distribution Pod-Weaver-Plugin-Sah-Schemas), released on 2024-01-12.
In your weaver.ini:
[-Sah::Schemas]
This plugin is used when building a Sah::Schemas::* distribution. It currently does the following to lib/Sah/Schemas/* .pm files:
Create "SAH SCHEMAS" POD section from list of Sah::Schema::* modules in the distribution
Mention some modules in See Also section
e.g. Sah and Data::Sah.
It does the following to "Sah/Schema/*" in lib .pm files:
Add "DESCRIPTION" POD section schema's description
Bool. Default true. If set to true, will add a SAH SCHEMA DEFINITION section containing the source (dump) of the schema. Examples will be stripped.
SAH SCHEMA DEFINITION
Filter only certain scenario modules that get processed. Can be specified multiple times. The Sah::Schema:: prefix can be omitted.
Sah::Schema::
Exclude certain scenario modules from being processed. Can be specified multiple times. The Sah::Schems:: prefix can be omitted.
Sah::Schems::
Filter only certain scenario modules that get processed. Can be specified multiple times. The Sah::Schemas:: prefix can be omitted.
Sah::Schemas::
Exclude certain scenario modules from being processed. Can be specified multiple times. The Sah::Schemas:: prefix can be omitted.
Please visit the project's homepage at https://metacpan.org/release/Pod-Weaver-Plugin-Sah-Schemas.
Source repository is at https://github.com/perlancar/perl-Pod-Weaver-Plugin-Sah-Schemas.
Sah and Data::Sah
Dist::Zilla::Plugin::Sah::Schemas
perlancar <perlancar@cpan.org>
Steven Haryanto <stevenharyanto@gmail.com>
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.
This software is copyright (c) 2024, 2023, 2022, 2020, 2019, 2016 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.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Pod-Weaver-Plugin-Sah-Schemas
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.
To install Pod::Weaver::Plugin::Sah::Schemas, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Pod::Weaver::Plugin::Sah::Schemas
CPAN shell
perl -MCPAN -e shell install Pod::Weaver::Plugin::Sah::Schemas
For more information on module installation, please visit the detailed CPAN module installation guide.