NAME

Perinci::Sub::Complete - Complete command-line argument using Rinci metadata

VERSION

This document describes version 0.62 of Perinci::Sub::Complete (from Perl distribution Perinci-Sub-Complete), released on 2014-08-06.

SYNOPSIS

See Perinci::CmdLine or Perinci::CmdLine::Lite or App::riap which use this module.

DESCRIPTION

FUNCTIONS

complete_arg_elem(%args) -> array

Given argument name and function metadata, complete array element.

Will attempt to complete using the completion routine specified in the argument specification, or if that is not specified, from argument's schema using complete_from_schema.

Arguments ('*' denotes required arguments):

• arg* => str

  Argument name.

• args => hash

  Collected arguments so far, will be passed to completion routines.

• ci => bool (default: 0)

  Whether to be case-insensitive.

• extras => hash

  To pass extra arguments to completion routines.

• index => int

  Index of element to complete.

• meta* => hash

  Rinci function metadata, must be normalized.

• riap_client => obj

  Optional, to perform complete_arg_val to the server.

  When the argument spec in the Rinci metadata contains completion key, this means there is custom completion code for that argument. However, if retrieved from a remote server, sometimes the completion key no longer contains the code (it has been cleansed into a string). Moreover, the completion code needs to run on the server.

  If supplied this argument and te riap_server_url argument, the function will try to request to the server (via Riap request complete_arg_val). Otherwise, the function will just give up/decline completing.

• riap_server_url => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• riap_uri => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• word => str (default: "")

  Word to be completed.

Return value:

 (array)

complete_arg_val(%args) -> array

Given argument name and function metadata, complete value.

Will attempt to complete using the completion routine specified in the argument specification, or if that is not specified, from argument's schema using complete_from_schema.

Arguments ('*' denotes required arguments):

• arg* => str

  Argument name.

• args => hash

  Collected arguments so far, will be passed to completion routines.

• ci => bool (default: 0)

  Whether to be case-insensitive.

• extras => hash

  To pass extra arguments to completion routines.

• meta* => hash

  Rinci function metadata, must be normalized.

• riap_client => obj

  Optional, to perform complete_arg_val to the server.

  When the argument spec in the Rinci metadata contains completion key, this means there is custom completion code for that argument. However, if retrieved from a remote server, sometimes the completion key no longer contains the code (it has been cleansed into a string). Moreover, the completion code needs to run on the server.

  If supplied this argument and te riap_server_url argument, the function will try to request to the server (via Riap request complete_arg_val). Otherwise, the function will just give up/decline completing.

• riap_server_url => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• riap_uri => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• word => str (default: "")

  Word to be completed.

Return value:

 (array)

complete_cli_arg(%args) -> hash

Complete command-line argument using Rinci function metadata.

This routine uses Perinci::Sub::GetArgs::Argv to generate Getopt::Long specification from arguments list in Rinci function metadata and common options. Then, it will use Complete::Getopt::Long to complete option names, option values, as well as arguments.

Arguments ('*' denotes required arguments):

• common_opts => hash

  Common options.

  A hash where the values are hashes containing these keys: getopt (Getopt::Long option specification), handler (Getopt::Long handler). Will be passed to get_args_from_argv(). Example:

   {
       help =E<gt> {
           getopt  =E<gt> 'help|h|?',
           handler =E<gt> sub { ... },
           summary =E<gt> 'Display help and exit',
       },
       version =E<gt> {
           getopt  =E<gt> 'version|v',
           handler =E<gt> sub { ... },
           summary =E<gt> 'Display version and exit',
       },
   }

• completion => code

  Supply custom completion routine.

  If supplied, instead of the default completion routine, this code will be called instead. Will receive all arguments that Complete::Getopt::Long will pass, and additionally:

  • extras (hash)

  • arg (str)

  • index (int, if completing argument element value)

• cword* => int

  On which argument cursor is located (zero-based).

• extras => hash

  A hash that contains extra stuffs.

  Usually used to let completion routine get extra stuffs.

• meta* => hash

  Rinci function metadata.

• per_arg_json => bool

  Will be passed to Perinci::Sub::GetArgs::Argv.

• per_arg_yaml => bool

  Will be passed to Perinci::Sub::GetArgs::Argv.

• riap_client => obj

  Optional, to perform complete_arg_val to the server.

  When the argument spec in the Rinci metadata contains completion key, this means there is custom completion code for that argument. However, if retrieved from a remote server, sometimes the completion key no longer contains the code (it has been cleansed into a string). Moreover, the completion code needs to run on the server.

  If supplied this argument and te riap_server_url argument, the function will try to request to the server (via Riap request complete_arg_val). Otherwise, the function will just give up/decline completing.

• riap_server_url => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• riap_uri => str

  Optional, to perform complete_arg_val to the server.

  See the riap_client argument.

• words* => array

  Command-line arguments.

Return value:

 (hash)

You can use `format_completion` function in `Complete::Bash` module to format the result of this function for bash.

complete_from_schema(%args) -> [status, msg, result, meta]

Complete a value from schema.

Employ some heuristics to complete a value from Sah schema. For example, if schema is [str => in => [qw/new open resolved rejected/]], then we can complete from the in clause. Or for something like [int => between => [1, 20]] we can complete using values from 1 to 20.

Arguments ('*' denotes required arguments):

• ci => bool

• schema* => any

  Must be normalized.

• word* => str (default: "")

Return value:

Returns an enveloped result (an array).

First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

 (any)

SEE ALSO

Complete, Complete::Getopt::Long

Perinci::CmdLine, Perinci::CmdLine::Lite, App::riap

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Perinci-Sub-Complete.

SOURCE

Source repository is at https://github.com/sharyanto/perl-Perinci-Sub-Complete.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=Perinci-Sub-Complete

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.

cpanm Perinci::Sub::Complete

perl -MCPAN -e shell
install Perinci::Sub::Complete