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#!/usr/bin/env ruby
require 'regexp_trie'
# like Regexp.union()
p RegexpTrie.union(%w(foobar fooxar foozap fooza)) # /foo(?:bar|xar|zap?)/
p RegexpTrie.union(%w(foobar fooxar foozap fooza), option: Regexp::IGNORECASE) # /foo(?:bar|xar|zap?)/i
# or object-oriented interface
rt = RegexpTrie.new
%w(foobar fooxar foozap fooza).each do |word|
rt.add(word)
end
p rt.to_regexp # /foo(?:bar|xar|zap?)/
See also the original Regexp::Trie in Perl.
RegexpTrie
takes an arbitrary number of regular expressions and assembles them into a single regular expression (or RE) that matches all that the individual REs match.
In other words, this library provides a limited but optimized version of Regexp.union()
, even thouh there are some incompatibilities with it.
Add this line to your application's Gemfile:
gem 'regexp_trie'
Regexp.union()
RegexpTrie
handles only literals. i.e. RegexpTrie.union("foo.*bar")
produces /foo\.\*bar/
, not /foo.*bar/
RegexpTrie
cannot handle empty strings.Regexp.union("foo", "foobar").match("foobar") # => #<MatchData "foo">
RegexpTrie.union("foo", "foobar").match("foobar") # => #<MatchData "foobar">
After checking out the repo, run bin/setup
to install dependencies. Then, run rake test
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.
Bug reports and pull requests are welcome on GitHub at https://github.com/gfx/regexp_trie.
The gem is available as open source under the terms of the MIT License.
The original code is @dankogai's Regexp::Trie.
FAQs
Unknown package
We found that regexp_trie demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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