The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.
 / 
App-EANUtils-0.003
River stage one • 1 direct dependent • 1 total dependent
/ App::EANUtils

NAME

App::EANUtils - Utilities related to EAN (International/European Article Number)

VERSION

This document describes version 0.003 of App::EANUtils (from Perl distribution App-EANUtils), released on 2023-01-28.

SYNOPSIS

DESCRIPTION

This distribution includes several utilities related to EAN (International/European Article Number):

FUNCTIONS

calc_ean13

Usage:

 calc_ean13(%args) -> [$status_code, $reason, $payload, \%result_meta]

Calculate check digit of EAN-13 number(s).

Examples:

  • Calculate a single number:

     calc_ean13(numbers => ["5-901234-12345"]); # -> [200, "OK", [5901234123457], {}]

This function is not exported.

Arguments ('*' denotes required arguments):

  • numbers* => array[ean13_without_check_digit]

    EAN-13 numbers without the check digit.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

calc_ean8

Usage:

 calc_ean8(%args) -> [$status_code, $reason, $payload, \%result_meta]

Calculate check digit of EAN-8 number(s).

Examples:

  • Calculate a single number:

     calc_ean8(numbers => ["9638-507"]); # -> [200, "OK", [96385074], {}]

This function is not exported.

Arguments ('*' denotes required arguments):

  • numbers* => array[ean8_without_check_digit]

    EAN-8 numbers without the check digit.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

check_ean13

Usage:

 check_ean13(%args) -> [$status_code, $reason, $payload, \%result_meta]

Check EAN-13 number(s).

Examples:

  • Check a single EAN-13 number (valid, exit code will be zero, message will be printed to STDOUT):

     check_ean13(ean13_numbers => ["5-901234-123457"]);

    Result:

     [
   200,
   "All success",
   undef,
   {
     results => [{ item_id => 5901234123457, message => "OK", status => 200 }],
   },
 ]

  • Check a single EAN-13 number (valid, exit code will be zero, no message):

     check_ean13(ean13_numbers => ["5-901234-123457"], quiet => 1);

    Result:

     [
   200,
   "All success",
   undef,
   {
     results => [{ item_id => 5901234123457, message => "OK", status => 200 }],
   },
 ]

  • Check a single EAN-13 number (invalid, exit code is non-zero, message output to STDOUT):

     check_ean13(ean13_numbers => ["5-901234-123450"]);

    Result:

     [
   400,
   "Invalid checksum digit",
   undef,
   {
     results => [
       {
         item_id => 5901234123450,
         message => "Invalid checksum digit",
         status  => 400,
       },
     ],
   },
 ]

  • Check a single EAN-13 number (invalid, exit code is non-zero, no message):

     check_ean13(ean13_numbers => ["5-901234-123450"], quiet => 1);

    Result:

     [
   400,
   "Invalid checksum digit",
   undef,
   {
     results => [
       {
         item_id => 5901234123450,
         message => "Invalid checksum digit",
         status  => 400,
       },
     ],
   },
 ]

Exit code will be non-zero all numbers are invalid. To check for individual numbers, use the JSON output.

This function is not exported.

Arguments ('*' denotes required arguments):

  • ean13_numbers* => array[ean13_unvalidated]

    (No description)

  • quiet => bool

    If set to true, don't output message to STDOUT.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

check_ean8

Usage:

 check_ean8(%args) -> [$status_code, $reason, $payload, \%result_meta]

Check EAN-8 number(s).

Examples:

  • Check a single EAN-8 number (valid, exit code will be zero, message output to STDOUT):

     check_ean8(ean8_numbers => ["9638-5074"]);

    Result:

     [
   200,
   "All success",
   undef,
   {
     results => [{ item_id => 96385074, message => "OK", status => 200 }],
   },
 ]

  • Check a single EAN-8 number (valid, exit code will be zero, no message):

     check_ean8(ean8_numbers => ["9638-5074"], quiet => 1);

    Result:

     [
   200,
   "All success",
   undef,
   {
     results => [{ item_id => 96385074, message => "OK", status => 200 }],
   },
 ]

  • Check a single EAN-8 number (invalid, exit code is non-zero, message output to STDOUT):

     check_ean8(ean8_numbers => ["9638-5070"]);

    Result:

     [
   400,
   "Incorrect check digit",
   undef,
   {
     results => [
       { item_id => 96385070, message => "Incorrect check digit", status => 400 },
     ],
   },
 ]

  • Check a single EAN-8 number (invalid, exit code is non-zero, no message):

     check_ean8(ean8_numbers => ["9638-5070"], quiet => 1);

    Result:

     [
   400,
   "Incorrect check digit",
   undef,
   {
     results => [
       { item_id => 96385070, message => "Incorrect check digit", status => 400 },
     ],
   },
 ]

Exit code will be non-zero all numbers are invalid. To check for individual numbers, use the JSON output.

This function is not exported.

Arguments ('*' denotes required arguments):

  • ean8_numbers* => array[ean8_unvalidated]

    (No description)

  • quiet => bool

    If set to true, don't output message to STDOUT.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-EANUtils.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-EANUtils.

SEE ALSO

More general utilities related to check digits: App::CheckDigitsUtils

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 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=App-EANUtils

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.