PCRE2

This library provides a Ruby interface for the PCRE2 library, which supports more advanced regular expression functionality than the built-in Ruby Regexp.

Installation

Install the PCRE2 library:

brew install pcre2

Add this line to your application's Gemfile:

gem 'pcre2'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install pcre2

Usage

PCRE2::Regexp aims to act as much like Ruby's Regexp as possible. It has implemented a subset of the Regexp and MatchData APIs so it can be used as a drop-in replacement.

regexp = PCRE2::Regexp.new("hello")
subject = "well hello there!"
matchdata = regexp.match(subject)

matchdata.offset(0) # [5, 10] - start and end of the match
matchdata[0] # => "hello"

matchdata = regexp.match(subject, 11) # find next match

Benchmark

You can run the benchmark that compares PCRE2::Regexp with Ruby's built-in Regexp as follows:

bundle exec rake benchmark

Resources

• PCRE2 Library
• PCRE2 demo

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/dv/pcre2.

License

The gem is available as open source under the terms of the MIT License.