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module Unitwise
# The search module provides a simple search mechanism around known basic
# units. The full list of avaliable units infinite, so this search creates
# a small subset of atoms and prefixes to help users find what they are
# looking for. Thus, there is a multitude of valid units that may be
# constructed that this module will not be aware of.
module Search
class << self
# An abbreviated list of possible units. These are known combinations
# of atoms and prefixes.
# @return [Array] A list of known units
# @api public
def all
@all ||= begin
units = []
Atom.all.each do |a|
units << build(a)
Unitwise::Prefix.all.each { |p| units << build(a, p) } if a.metric?
end
units
end
end
# Search the list of known units for a match.
# @param term [String, Regexp] The term to search for
# @return [Array] A list of matching units.
# @api public
def search(term)
all.select do |unit|
unit.aliases.any? { |str| Regexp.new(term).match(str) }
end
end
private
# Helper method for building a new unit by a known atom and prefix.
# @param atom [Unitwise::Atom]
# @param prefix [Unitwise::Prefix, nil]
# @return [Unitwise::Unit]
# @api private
def build(atom, prefix = nil)
Unit.new([Term.new(:atom => atom, :prefix => prefix)])
end
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems