A fast User Agent parser library, using data from user-agent-string.info

UASparser is available via Maven Central:

• Group ID: cz.mallat.uasparser
• Artifact ID: uasparser

View the latest artifact info.

Simply use UASparser or any of its subclasses like so:

UASparser parser = new UASparser();
OnlineUpdater updater = new OnlineUpdater(parser);
UserAgentInfo info = parser.parse("Mozilla/4.0 (compatible; MSIE 7.0;
Windows NT 5.1; )");

This will create a new parser and initialize it with a bundled copy of the database. The OnlineUpdater will then asynchronously fetch the latest database in the background, making it available after a few seconds and caching it locally as well. See it's source for more on how it works.

In addition, there are a few different parser classes available:

• UASparser - Default parser, thread-safe
• MultithreadedUASparser - A faster variant of UASparser, uses a bit more memory
• SingleThreadedUASparser - Non-threadsafe variant, ideal for Hadoop and similar use cases
• BrowserFamilyParser - UASparser subclass which only returns the browser family string

Building requires Apache buildr:

$ [sudo] gem install buildr

To build UASparser:

$ git clone https://github.com/chetan/UASparser.git
$ cd UASparser
$ buildr package

Binaries will be placed in target.

• JRegex

• Now available via Maven Central

• added support for the [device] and [device_reg] sections

• Handle version API errors (issue #3)
• Defer initial update on startup (don't block)
• Apply jitter after every update

• Added UserAgentInfo#getBrowserVersionInfo() method

• Documented all UserAgentInfo reader methods

• Added a new, fast, thread-safe MultithreadedUASparser (thanks to Michael Remme)

• New OnlineUpdater class replaces the old OnlineUpdateUASparser and CachingOnlineUpdateUASparser classes which are now deprecated

• OnlineUpdater will fallback to a vendored copy if no cached version exists and update fails

• Minor bugfixes

LGPL. See LICENSE file for details.