Perinci::CmdLine::Lite - A Rinci/Riap-based command-line application framework
This document describes version 1.928 of Perinci::CmdLine::Lite (from Perl distribution Perinci-CmdLine-Lite), released on 2022-11-24.
In gen-random-num script:
gen-random-num
use Perinci::CmdLine::Lite; our %SPEC; $SPEC{gen_random_num} = { v => 1.1, summary => 'Generate some random numbers', args => { count => { summary => 'How many numbers to generate', schema => ['int*' => min=>0], default => 1, cmdline_aliases=>{n=>{}}, req => 1, pos => 0, }, min => { summary => 'Lower limit of random number', schema => 'float*', default => 0, }, max => { summary => 'Upper limit of random number', schema => 'float*', default => 1, }, }, result_naked => 1, }; sub gen_random_num { my %args = @_; my @res; for (1..$args{count}) { push @res, $args{min} + rand()*($args{max}-$args{min}); } \@res; } Perinci::CmdLine::Lite->new(url => '/main/gen_random_num')->run;
Run your script:
% ./gen-random-num 0.999473691060306 % ./gen-random-num --min 1 --max 10 5 1.27390166158969 1.69077475473679 8.97748327778684 5.86943773494068 8.34341298182493
JSON output support out of the box:
% ./gen-random-num -n3 --json [200,"OK (envelope added by Perinci::Access::Lite)",[0.257073684902029,0.393782991540746,0.848740540017513],{}]
Automatic help message:
% ./gen-random-num -h gen-random-num - Generate some random numbers Usage: gen-random-num --help (or -h, -?) gen-random-num --version (or -v) gen-random-num [options] [count] Options: --config-path=s Set path to configuration file --config-profile=s Set configuration profile to use --count=i, -n How many numbers to generate (=arg[0]) [1] --format=s Choose output format, e.g. json, text [undef] --help, -h, -? Display this help message --json Set output format to json --max=f Upper limit of random number [1] --min=f Lower limit of random number [0] --naked-res When outputing as JSON, strip result envelope [0] --no-config Do not use any configuration file --version, -v
Automatic configuration file support:
% cat ~/gen-random-num.conf count=5 max=0.01 % ./gen-random-num 0.00105268954838724 0.00701443611501844 0.0021247476506154 0.00813872824513005 0.00752832346491306
Automatic tab completion support:
% complete -C gen-random-num gen-random-num % gen-random-num --mi<tab>
See Perinci::CmdLine::Manual for details on other available features (subcommands, automatic formatting of data structures, automatic schema validation, dry-run mode, automatic POD generation, remote function support, automatic CLI generation, automatic --version, automatic HTTP API, undo/transactions, configurable output format, logging, progress bar, colors/Unicode, and more).
Perinci::CmdLine is a command-line application framework. It allows you to create full-featured CLI applications easily and quickly.
See Perinci::CmdLine::Manual for more details.
There is also a blog post series on Perinci::CmdLine tutorial: https://perlancar.wordpress.com/category/pericmd-tut/
Perinci::CmdLine::Lite is the default backend implementation. Another implementation is the heavier Perinci::CmdLine::Classic which has a couple of more features not yet incorporated into ::Lite, e.g. transactions.
You normally should use Perinci::CmdLine::Any instead to be able to switch backend on the fly.
All those supported by Perinci::CmdLine::Base.
All those supported by Perinci::CmdLine::Base, plus:
If set to true, then when formatting to text formats, this class won't print any newline to keep the data being printed unmodified.
text
All the attributes of Perinci::CmdLine::Base, plus:
validate_args => bool (default: 1)
Validate arguments using schema from metadata.
All the methods of Perinci::CmdLine::Base, plus:
All the environment variables that Perinci::CmdLine::Base supports, plus:
Set log level to 'debug'.
Set log level to 'info'.
Set log level to 'error'.
Set log level to 'trace'.
Set log level.
Explicitly turn the progress bar on/off.
Set the default of table_column_orders in format_options in result metadata, similar to what's implemented in Perinci::Result::Format and Data::Format::Pretty::Console.
table_column_orders
format_options
Please visit the project's homepage at https://metacpan.org/release/Perinci-CmdLine-Lite.
Source repository is at https://github.com/perlancar/perl-Perinci-CmdLine-Lite.
Perinci::CmdLine::Any
Perinci::CmdLine::Classic
Perinci::CmdLine::Inline
perlancar <perlancar@cpan.org>
Paul Cochrane <paul@liekut.de>
Steven Haryanto <stevenharyanto@gmail.com>
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.
This software is copyright (c) 2022, 2021, 2020, 2019, 2018, 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.
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.
To install Perinci::CmdLine::Lite, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Perinci::CmdLine::Lite
CPAN shell
perl -MCPAN -e shell install Perinci::CmdLine::Lite
For more information on module installation, please visit the detailed CPAN module installation guide.