NAME

Sah::Schema::language::code::alpha2 - Language code (alpha-2)

VERSION

This document describes version 0.005 of Sah::Schema::language::code::alpha2 (from Perl distribution Sah-Schemas-Language), released on 2023-08-07.

SYNOPSIS

Sample data and validation results against this schema

""  # INVALID

"ID"  # valid (Indonesian (2 letter)), becomes "id"

"IND"  # INVALID (Indonesian (3 letter, rejected))

"qq"  # INVALID (Unknown language code)

Using with Data::Sah

To check data against this schema (requires Data::Sah):

use Data::Sah qw(gen_validator);
my $validator = gen_validator("language::code::alpha2*");
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("language::code::alpha2", {return_type=>'str_errmsg'});
my $errmsg = $validator->($data);

# a sample valid data
$data = "ID";
my $errmsg = $validator->($data); # => ""

# a sample invalid data
$data = "IND";
my $errmsg = $validator->($data); # => "Must be one of [\"km\",\"nn\",\"vo\",\"fa\",\"rm\",\"en\",\"aa\",\"oc\",\"mr\",\"ab\",\"tn\",\"lu\",\"oj\",\"cy\",\"sv\",\"lt\",\"sl\",\"tr\",\"lb\",\"la\",\"jv\",\"ps\",\"nr\",\"pi\",\"bm\",\"dv\",\"mn\",\"or\",\"af\",\"ny\",\"ff\",\"ht\",\"ie\",\"tk\",\"ty\",\"ha\",\"cr\",\"su\",\"av\",\"lv\",\"ja\",\"st\",\"id\",\"bh\",\"da\",\"be\",\"my\",\"vi\",\"sa\",\"mk\",\"gd\",\"hu\",\"qu\",\"pl\",\"nd\",\"sw\",\"mh\",\"fo\",\"si\",\"zh\",\"ss\",\"ee\",\"sg\",\"ne\",\"lo\",\"kk\",\"ky\",\"ik\",\"th\",\"te\",\"hi\",\"bn\",\"ch\",\"ce\",\"pt\",\"ho\",\"kr\",\"kj\",\"li\",\"pa\",\"gn\",\"lg\",\"as\",\"so\",\"fi\",\"rn\",\"om\",\"br\",\"ug\",\"kn\",\"ms\",\"ku\",\"ng\",\"iu\",\"mi\",\"se\",\"sh\",\"ru\",\"de\",\"ba\",\"tg\",\"gu\",\"ts\",\"sq\",\"co\",\"ti\",\"am\",\"ia\",\"he\",\"ka\",\"tw\",\"it\",\"os\",\"es\",\"ga\",\"sd\",\"mg\",\"eo\",\"no\",\"to\",\"wa\",\"cs\",\"sm\",\"gv\",\"gl\",\"ae\",\"kl\",\"kv\",\"nv\",\"el\",\"hz\",\"bo\",\"nl\",\"sr\",\"ay\",\"cu\",\"tl\",\"ak\",\"fy\",\"yo\",\"xh\",\"sc\",\"sn\",\"dz\",\"ko\",\"io\",\"ml\",\"hr\",\"ca\",\"ro\",\"uk\",\"bg\",\"ks\",\"ii\",\"ur\",\"ki\",\"rw\",\"is\",\"et\",\"zu\",\"hy\",\"wo\",\"nb\",\"ta\",\"kw\",\"tt\",\"az\",\"na\",\"an\",\"ve\",\"ln\",\"fr\",\"za\",\"ar\",\"yi\",\"sk\",\"cv\",\"eu\",\"mt\",\"kg\",\"bs\",\"fj\",\"bi\",\"ig\",\"uz\"]"

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("language::code::alpha2", {return_type=>'str_errmsg+val'});
my $res = $validator->($data); # [$errmsg, $validated_val]

# a sample valid data
$data = "ID";
my $res = $validator->($data); # => ["","id"]

# a sample invalid data
$data = "IND";
my $res = $validator->($data); # => ["Must be one of [\"km\",\"nn\",\"vo\",\"fa\",\"rm\",\"en\",\"aa\",\"oc\",\"mr\",\"ab\",\"tn\",\"lu\",\"oj\",\"cy\",\"sv\",\"lt\",\"sl\",\"tr\",\"lb\",\"la\",\"jv\",\"ps\",\"nr\",\"pi\",\"bm\",\"dv\",\"mn\",\"or\",\"af\",\"ny\",\"ff\",\"ht\",\"ie\",\"tk\",\"ty\",\"ha\",\"cr\",\"su\",\"av\",\"lv\",\"ja\",\"st\",\"id\",\"bh\",\"da\",\"be\",\"my\",\"vi\",\"sa\",\"mk\",\"gd\",\"hu\",\"qu\",\"pl\",\"nd\",\"sw\",\"mh\",\"fo\",\"si\",\"zh\",\"ss\",\"ee\",\"sg\",\"ne\",\"lo\",\"kk\",\"ky\",\"ik\",\"th\",\"te\",\"hi\",\"bn\",\"ch\",\"ce\",\"pt\",\"ho\",\"kr\",\"kj\",\"li\",\"pa\",\"gn\",\"lg\",\"as\",\"so\",\"fi\",\"rn\",\"om\",\"br\",\"ug\",\"kn\",\"ms\",\"ku\",\"ng\",\"iu\",\"mi\",\"se\",\"sh\",\"ru\",\"de\",\"ba\",\"tg\",\"gu\",\"ts\",\"sq\",\"co\",\"ti\",\"am\",\"ia\",\"he\",\"ka\",\"tw\",\"it\",\"os\",\"es\",\"ga\",\"sd\",\"mg\",\"eo\",\"no\",\"to\",\"wa\",\"cs\",\"sm\",\"gv\",\"gl\",\"ae\",\"kl\",\"kv\",\"nv\",\"el\",\"hz\",\"bo\",\"nl\",\"sr\",\"ay\",\"cu\",\"tl\",\"ak\",\"fy\",\"yo\",\"xh\",\"sc\",\"sn\",\"dz\",\"ko\",\"io\",\"ml\",\"hr\",\"ca\",\"ro\",\"uk\",\"bg\",\"ks\",\"ii\",\"ur\",\"ki\",\"rw\",\"is\",\"et\",\"zu\",\"hy\",\"wo\",\"nb\",\"ta\",\"kw\",\"tt\",\"az\",\"na\",\"an\",\"ve\",\"ln\",\"fr\",\"za\",\"ar\",\"yi\",\"sk\",\"cv\",\"eu\",\"mt\",\"kg\",\"bs\",\"fj\",\"bi\",\"ig\",\"uz\"]","ind"]

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.

Using with Params::Sah

To validate function parameters against this schema (requires Params::Sah):

use Params::Sah qw(gen_validator);

sub myfunc {
    my @args = @_;
    state $validator = gen_validator("language::code::alpha2*");
    $validator->(\@args);
    ...
}

Using with Perinci::CmdLine::Lite

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 => ['language::code::alpha2*'],
        },
        ...
    },
};
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 ...

Using on the CLI with validate-with-sah

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 '"language::code::alpha2*"' '"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.

Using with Type::Tiny

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('language::code::alpha2*', name=>'LanguageCodeAlpha2')
    );
}

use My::Types qw(LanguageCodeAlpha2);
LanguageCodeAlpha2->assert_valid($data);

DESCRIPTION

Accept only current (not retired) codes. Only alpha-2 codes are accepted.

HOMEPAGE

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

SOURCE

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

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 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-Language

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 Sah::Schemas::Language, copy and paste the appropriate command in to your terminal.

cpanm

cpanm Sah::Schemas::Language

CPAN shell

perl -MCPAN -e shell
install Sah::Schemas::Language

For more information on module installation, please visit the detailed CPAN module installation guide.

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