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Perinci-Examples-0.24
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/ Perinci::Examples

NAME

Perinci::Examples - Example modules containing metadata and various example functions

VERSION

This document describes version 0.24 of Perinci::Examples (from Perl distribution Perinci-Examples), released on 2014-07-03.

SYNOPSIS

 use Perinci::Examples qw(delay);
 delay();

DESCRIPTION

This module and its submodules contain an odd mix of various functions, variables, and other code entities, along with their Rinci metadata. Mostly used for testing Rinci specification and the various Perinci modules.

Example scripts are put in a separate distribution (see Perinci::Examples::Bin) to make dependencies for this distribution minimal (e.g. not depending on Perinci::CmdLine) since this example module(s) are usually used in the tests of other modules.

A sample description

    verbatim
    line2

Another paragraph with bold, italic text.

FUNCTIONS

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

Demonstrate argument default value from default and/or schema.

Arguments ('*' denotes required arguments):

  • a => int

    No defaults.

  • b => int (default: 2)

    Default from "default" property.

  • c => int (default: 3)

    Default from schema.

  • d => int (default: 4)

    Default from "default" property as well as schema.

    "Default" property overrides default value from schema.

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.

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

Call gen_array().

This is to test nested call (e.g. Log::Any::For::Package).

Arguments ('*' denotes required arguments):

  • len* => int (default: 10)

    Array length.

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.

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

Call randlog().

This is to test nested call (e.g. Log::Any::For::Package).

Arguments ('*' denotes required arguments):

  • max_level => int (default: 6)

    Maximum level.

  • min_level => int (default: 1)

    Minimum level.

  • n => int (default: 10)

    Number of log messages to produce.

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.

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

Sleep, by default for 10 seconds.

Can be used to test the time_limit property.

Arguments ('*' denotes required arguments):

  • n => int (default: 10)

    Number of seconds to sleep.

  • per_second => bool (default: 0)

    Whether to sleep(1) for n times instead of sleep(n).

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.

dies() -> [status, msg, result, meta]

Dies tragically.

Can be used to test exception handling.

No arguments.

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.

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

Return error response.

Arguments ('*' denotes required arguments):

  • code => int (default: 500)

    Error code to return.

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.

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

Generate an array of specified length.

Also tests result schema.

Arguments ('*' denotes required arguments):

  • len* => int (default: 10)

    Array length.

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.

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

Generate a hash with specified number of pairs.

Also tests result schema.

Arguments ('*' denotes required arguments):

  • pairs => int

    Number of pairs.

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.

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

Merge two hashes.

This function can be used to test passing nonscalar (hash) arguments.

Arguments ('*' denotes required arguments):

  • h1* => hash

    First hash (left-hand side).

  • h2* => hash

    First hash (right-hand side).

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.

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

Do nothing, return original argument.

Will also return argument passed to it.

This function is pure (produce no side effects).

Arguments ('*' denotes required arguments):

  • arg => any

    Argument.

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.

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

Produce some random Log::Any log messages.

Arguments ('*' denotes required arguments):

  • max_level => int (default: 6)

    Maximum level.

  • min_level => int (default: 1)

    Minimum level.

  • n => int (default: 10)

    Number of log messages to produce.

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.

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

Return arguments.

Can be useful to check what arguments the function gets. Aside from normal arguments, sometimes function will receive special arguments (those prefixed with dash, -).

Arguments ('*' denotes required arguments):

  • arg => any

    Argument.

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.

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

Sum numbers in array.

Examples:

 sum( array => [1, 2, 3]); # -> 6

First example.

 sum( array => [1.1, 2.1, 3.1], round => 1); # -> 6

Second example, using argv.

 sum( array => ["a"]); # ERROR 400

Third example, invalid arguments.

 sum();

Total numbers found in a file (4th example, bash).

 sum();

2-dice roll (5th example, perl).

This function can be used to test passing nonscalar (array) arguments.

Arguments ('*' denotes required arguments):

  • array* => array

    Array.

  • round => bool (default: 0)

    Whether to round result to integer.

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.

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

This function has arguments with the same name as Perinci::CmdLine common options.

Arguments ('*' denotes required arguments):

  • action => str

  • cmd => str

  • debug => bool

  • format => str

  • format_options => str

  • help => bool

  • json => bool

  • log_level => str

  • perl => bool

  • quiet => bool

  • subcommands => str

  • trace => bool

  • verbose => bool

  • version => str

  • yaml => bool

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.

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

Do nothing, return args.

This function is used to test argument completion.

This function is pure (produce no side effects).

Arguments ('*' denotes required arguments):

  • a1 => array

    Array of strings, where the string has "in" schema clause.

  • a2 => array

    Array with element_completion routine that generate random letter.

  • a3 => array

    Array with element_completion routine that dies.

  • arg0 => any

    Argument without any schema.

  • f0 => float

    Float with just "float" schema defined.

  • f1 => float

    Float with xmin/xmax on the schema.

  • i0 => int

    Integer with just "int" schema defined.

  • i1 => int

    Integer with min/xmax on the schema.

  • i2 => int

    Integer with large range min/max on the schema.

  • s1 => str

    String with possible values in "in" schema clause.

  • s1b => str

    String with possible values in "in" schema clause, contains special characters.

    This argument is intended to test how special characters are escaped.

  • s2 => str

    String with completion routine that generate random letter.

  • s3 => str

    String with completion routine that dies.

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.

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

Does nothing, only here to test # VALIDATE_ARGS.

Arguments ('*' denotes required arguments):

  • a => int

  • b => str

  • h1 => hash

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.

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

This function has several undescribed args.

Originally added to see how peri-func-usage or Perinci::To::Text will display the usage or documentation for this function.

Arguments ('*' denotes required arguments):

  • arg1 => any

  • arg2 => any

  • arg3 => any

  • arg4 => any

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.

SEE ALSO

Perinci

Perinci::Examples::Bin

HOMEPAGE

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

SOURCE

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

BUGS

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

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.