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ua_classifier's Introduction

User-Agent classification using TheWeatherChannel's dClass and OpenDDR

An implementation of the user agent classification library dClass by TheWeatherChannel using an Erlang NIF.

The main interface is ua_classifier:classify/1. It returns a property list with user agent properties from OpenDDR.

{ok, Ps} = ua_classifier:classify("Mozilla/5.0 (iPod; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7").

Returns:

{ok,[{is_wireless_device,true},
     {is_tablet,false},
     {ajax_support_javascript,true},
     {device_os,<<"iPhone OS">>},
     {displayWidth,320},
     {displayHeight,480},
     {inputDevices,<<"touchscreen">>},
     {parentId,<<"genericApple">>},
     {model,<<"iPod Touch">>},
     {vendor,<<"Apple">>},
     {id, <<"iPod">>]}

This property list can be mapped to a device type with ua_classifier:device_type/1. Known device types are: text, phone, tablet and desktop.

ua_classifier:device_type(Ps).

Returns:

phone

The OpenDDR data file

This library uses the ".dtree" file of dClass. It is placed in priv/openddr.dtree. The dtree file is loaded when the NIF is initialized and when the NIF is upgraded.

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