RegexpPropertyValues

This small library lets you see which property values are supported by the regular expression engine of the Ruby version you are running and directly reads out their codepoint ranges from there.

That is, it determines all supported values for \p{value} expressions and what they match.

Usage

Browse all property values (supported by any Ruby, ever)

require 'regexp_property_values'

PV = RegexpPropertyValues

PV.all # => ["Alpha", "Blank", "Cntrl", ...]
PV.by_category # => {"POSIX brackets" => ["Alpha", ...], "Special" => ...}
PV.short_and_long_names # => [["M", "Grek", ...], ["Mark", "Greek", ...]]

Browse property values supported by the Ruby you are running

PV.all_for_current_ruby # => ["Alpha", "Blank", "Cntrl", ...]

PV.by_category.map { |k, v| [k, v.select(&:supported_by_current_ruby?] }

# etc.

Inspect properties

PV['alpha'].supported_by_current_ruby? # => true
PV['foobar'].supported_by_current_ruby? # => false

PV['AHex'].matched_characters # => %w[0 1 2 3 4 5 6 7 8 9 A B C ...]
PV['AHex'].matched_codepoints # => [48, 49, 50, ...]
PV['AHex'].matched_ranges # => [48..57, 65..70, 97..102]

Utility methods

# This one takes a few seconds (or minutes, without the C extension)
PV.alias_hash # => {"M" => "Mark", "Grek" => "Greek", ...}

# download the latest list of possible properties
PV.update