NAME
    Perinci::CmdLine::Lite - A lightweight Rinci/Riap-based command-line
    application framework

VERSION
    This document describes version 0.01 of Perinci::CmdLine::Lite (from
    Perl distribution Perinci-CmdLine-Lite), released on 2014-07-16.

SYNOPSIS
    See Perinci::CmdLine::Manual::Examples.

DESCRIPTION
    NOTE: This module is still experimental. Early release, completion not
    yet implemented.

    Perinci::CmdLine::Lite (hereby P::C::Lite) is a lightweight (low startup
    overhead, minimal dependencies) alternative to Perinci::CmdLine (hereby
    P::C). It offers a subset of functionality and a compatible API. Unless
    you use the unsupported features of P::C, P::C::Lite is a drop-in
    replacement for P::C (also see Perinci::CmdLine::Any for automatic
    fallback).

    The main difference is that, to keep dependencies minimal and startup
    overhead small, P::C::Lite does not access code and metadata through the
    Riap client library Perinci::Access layer, but instead accesses Perl
    modules/packages directly.

    Below is summary of the differences between P::C::Lite and P::C:

    *   No remote URL support

        Only code in Perl packages on the filesystem is available.

    *   No automatic validation from schema

        As code wrapping and schema code generation by Data::Sah currently
        adds some startup overhead.

    *   P::C::Lite starts much faster

        The target is under 0.05s, while P::C can start between 0.2-0.5s.

    *   P::C::Lite does not support color themes

    *   P::C::Lite does not support undo

    *   P::C::Lite does not currently support logging

        Something more lightweight than Log::Any::App will be considered. If
        you want to view logging and your function uses Log::Any, you can do
        something like this:

         % DEBUG=1 PERL5OPT=-MLog::Any::App app.pl

    *   P::C::Lite does not support progress indicator

    *   P::C::Lite does not support I18N

    *   P::C::Lite does not yet support these Rinci function metadata
        properties

         x.perinci.cmdline.default_format

    *   P::C::Lite does not yet support these Rinci function argument
        specification properties

         cmdline_src

    *   P::C::Lite does not yet support these Rinci result metadata
        properties/attributes

         is_stream
         cmdline.display_result
         cmdline.page_result
         cmdline.pager

    *   P::C::Lite uses simpler formatting

        Instead of Perinci::Result::Format (especially the 'text' formats
        which use Data::Format::Pretty::Console and Text::ANSITable), to
        keep dependencies minimal and formatting quick, P::C::Lite uses the
        following simple rules that work for a significant portion of common
        data structures:

        1) if result is undef, print nothing.

        2) if result is scalar, print it (with newline automatically added).

        3) if result is an array of scalars (check at most 5 first rows),
        print it one line for each element.

        4) if result is a hash of scalars (check at most 5 keys), print a
        two column table, first column is key and second column is value.
        Keys will be sorted.

        5) if result is an array of hashes of scalars (check at most 5
        elements), print as table.

        6) if result is an array of arrays of scalars (check at most 5
        elements), print as table.

        7) otherwise print as JSON (after cleaning it with
        Data::Clean::JSON).

        YAML and the other formats are not supported.

        Table is printed using the more lightweight and much faster
        Text::Table::Tiny.

    *   P::C::Lite does not yet support these environment variables

         PERINCI_CMDLINE_COLOR_THEME
         PERINCI_CMDLINE_SERVER
         PROGRESS
         PAGER
         COLOR
         UTF8

         DEBUG, VERBOSE, QUIET, TRACE, and so on

    *   In passing command-line object to functions, P::C::Lite object is
        passed

        Some functions might expect a Perinci::CmdLine instance.

ENVIRONMENT
    *   PERINCI_CMDLINE_PROGRAM_NAME => STR

        Can be used to set CLI program name.

SEE ALSO
    Perinci::CmdLine, Perinci::CmdLine::Manual

    Perinci::CmdLine::Any

HOMEPAGE
    Please visit the project's homepage at
    <https://metacpan.org/release/Perinci-CmdLine-Lite>.

SOURCE
    Source repository is at
    <https://github.com/sharyanto/perl-Perinci-CmdLine-Lite>.

BUGS
    Please report any bugs or feature requests on the bugtracker website
    <https://rt.cpan.org/Public/Dist/Display.html?Name=Perinci-CmdLine-Lite>

    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.

AUTHOR
    Steven Haryanto <stevenharyanto@gmail.com>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2014 by Steven Haryanto.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.