NAME

Perinci::CmdLine::Help - Generate help message for Perinci::CmdLine-based app

VERSION

This document describes version 0.175 of Perinci::CmdLine::Help (from Perl distribution Perinci-CmdLine-Help), released on 2022-10-19.

DESCRIPTION

Currently used by Perinci::CmdLine::Lite and App::riap. Eventually I want Perinci::CmdLine to use this also (needs prettier and more sophisticated formatting options first though).

FUNCTIONS

gen_help

Usage:

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

Generate help message for Perinci::CmdLine-based app.

This function is not exported by default, but exportable.

Arguments ('*' denotes required arguments):

• common_opts => hash (default: {})

  (No description)

• ggls_res => array

  Full result from gen_getopt_long_spec_from_meta().

  If you already call Perinci::Sub::GetArgs::Argv's gen_getopt_long_spec_from_meta(), you can pass the full enveloped result here, to avoid calculating twice.

• lang => str

  Will be passed to Perinci::Sub::To::CLIDocData's gen_cli_doc_data_from_meta().

• mark_different_lang => bool

  Will be passed to Perinci::Sub::To::CLIDocData's gen_cli_doc_data_from_meta().

• meta* => hash

  Function metadata.

• meta_is_normalized => bool

  (No description)

• per_arg_json => bool

  (No description)

• per_arg_yaml => bool

  (No description)

• program_name* => str

  (No description)

• program_summary => str

  (No description)

• subcommands => hash

  (No description)

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/Perinci-CmdLine-Help.

SOURCE

Source repository is at https://github.com/perlancar/perl-Perinci-CmdLine-Help.

SEE ALSO

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, 2020, 2017, 2016, 2015, 2014 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=Perinci-CmdLine-Help

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.

cpanm Perinci::CmdLine::Help

perl -MCPAN -e shell
install Perinci::CmdLine::Help