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SHARYANTO::HTTP::DetectUA::Simple - A very simple and generic browser detection library
This document describes version 0.77 of SHARYANTO::HTTP::DetectUA::Simple (from Perl distribution SHARYANTO-Utils), released on 2015-09-04.
Please visit the project's homepage at https://metacpan.org/release/SHARYANTO-Utils.
Source repository is at https://github.com/perlancar/perl-SHARYANTO-Utils.
Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=SHARYANTO-Utils
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.
COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by firstname.lastname@example.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.
I needed a simple and fast routine which can detect whether HTTP client is a GUI browser (like Chrome or Firefox), a text browser (like Lynx or Links), or neither (like curl, or LWP). Hence, this module.
detect_http_ua_simple($env) -> [status, msg, result, meta]
Detect whether HTTP client is a GUI/TUI browser.
This function is a simple and fast routine to detect whether HTTP client is a GUI browser (like Chrome or Firefox), a text-based browser (like Lynx or Links), or neither (like curl or LWP). Extra information can be provided in the future.
Currently these heuristic rules are used:
check popular browser markers in User-Agent header (e.g. 'Chrome', 'Opera');
check Accept header for 'image/';
It is several times faster than the other equivalent Perl modules, this is because it does significantly less.
Arguments ('*' denotes required arguments):
env => any
CGI-compatible environment, e.g. \%ENV or PSGI's $env.
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 value: (hash)
'is_gui_browser' key will be set to true if HTTP client is a GUI browser.
'is_text_browser' key will be set to true if HTTP client is a text/TUI browser.
'is_browser' key will be set to true if either 'is_gui_browser' or 'is_text_browser' is set to true.