/ 
Sah-Schemas-EAN-0.009
River stage one • 2 direct dependents • 2 total dependents
/ Sah::Schema::ean13_without_check_digit

NAME

Sah::Schema::ean13_without_check_digit - The first 12 digits of an EAN-13 number (eg. 5-901234-12345)

VERSION

This document describes version 0.009 of Sah::Schema::ean13_without_check_digit (from Perl distribution Sah-Schemas-EAN), released on 2023-01-27.

SYNOPSIS

Sample data and validation results against this schema

"5-901234-12345"  # valid, becomes 590123412345

"5-901234-123457"  # INVALID (Check digit present)

12345678901  # INVALID (Less than 12 digits)

Using with Data::Sah

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

use Data::Sah qw(gen_validator);
my $validator = gen_validator("ean13_without_check_digit*");
say $validator->($data) ? "valid" : "INVALID!";

The above schema 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("ean13_without_check_digit", {return_type=>'str_errmsg'});
my $errmsg = $validator->($data);

# a sample valid data
$data = "5-901234-12345";
my $errmsg = $validator->($data); # => ""

# a sample invalid data
$data = "5-901234-123457";
my $errmsg = $validator->($data); # => "Must match regex pattern \\A[0-9]{12}\\z"

Often a schema has coercion rule or default value, so after validation the validated value is different. To return the validated (set-as-default, coerced, prefiltered) value:

my $validator = gen_validator("ean13_without_check_digit", {return_type=>'str_errmsg+val'});
my $res = $validator->($data); # [$errmsg, $validated_val]

# a sample valid data
$data = "5-901234-12345";
my $res = $validator->($data); # => ["",590123412345]

# a sample invalid data
$data = "5-901234-123457";
my $res = $validator->($data); # => ["Must match regex pattern \\A[0-9]{12}\\z",5901234123457]

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("ean13_without_check_digit*");
    $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 => ['ean13_without_check_digit*'],
        },
        ...
    },
};
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 with Type::Tiny

To create a type constraint and type library from a schema:

package My::Types {
    use Type::Library -base;
    use Type::FromSah qw( sah2type );

    __PACKAGE__->add_type(
        sah2type('$sch_name*', name=>'Ean13WithoutCheckDigit')
    );
}

use My::Types qw(Ean13WithoutCheckDigit);
Ean13WithoutCheckDigit->assert_valid($data);

DESCRIPTION

Nondigits [^0-9] will be removed during coercion.

Length must be 7 digits.

This schema can be useful if you want co calculate the check digit and want to accept the first 12 digits as input.

HOMEPAGE

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

SOURCE

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

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) 2023, 2020, 2019 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-EAN

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.