NAME

Lingua::Identify::Any - Detect language of text using one of several available backends

VERSION

This document describes version 0.002 of Lingua::Identify::Any (from Perl distribution Lingua-Identify-Any), released on 2019-07-12.

SYNOPSIS

 use Lingua::Identify::Any qw(
     detect_text_language
 );

 my $res = detect_text_language(text => 'Blah blah blah');

Sample result:

 [200, "OK", {
     backend     => 'Lingua::Identify',
     lang_code   => "en",
     confidence  => 0.78, # 1 would mean certainty
     is_reliable => 1,
 }]

DESCRIPTION

This module offers a common interface to several language detection backends.

FUNCTIONS

detect_text_language

Usage:

 detect_text_language(%args) -> [status, msg, payload, meta]

Detect language of text using one of several available backends.

Backends will be tried in order. When a backend is not available, or when it fails to detect the language, the next backend will be tried. Currently supported backends:

  • Lingua::Identify::CLD

  • Lingua::Identify

  • WebService::DetectLanguage (only when try_remote_backends is set to true)

This function is not exported by default, but exportable.

Arguments ('*' denotes required arguments):

  • backends => array[str]

  • dlcom_api_key => str

    API key for detectlanguage.com.

    Only required if you use WebService::DetectLanguage backend.

  • text* => str

  • try_remote_backends => bool

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 (payload) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

Return value: (hash)

Status: will return 200 status if detection is successful. Otherwise, will return 400 if a specified backend is unknown/unsupported, or 500 if detection has failed.

Payload: a hash with the following keys: backend (the backend name used to produce the result), lang_code (str, 2-letter ISO language code), confidence (float), is_reliable (bool).

ENVIRONMENT

PERL_LINGUA_IDENTIFY_ANY_BACKENDS

String. Comma-separated list of backends.

PERL_LINGUA_IDENTIFY_ANY_TRY_REMOTE_BACKENDS

Boolean. Set the default for "detect_text_language"'s try_remote_backends argument.

If set to 1, will also include backends that query remotely, e.g. WebService::DetectLanguage.

PERL_LINGUA_IDENTIFY_ANY_DLCOM_API_KEY

String. Set the default for "detect_text_language"'s dlcom_api_key.

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/Lingua-Identify-Any.

SOURCE

Source repository is at https://github.com/perlancar/perl-Lingua-Identify-Any.

BUGS

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

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

perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2019 by 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.