Contents

# frozen_string_literal: true

#
# Copyright (c) 2020-present, Blue Marble Payroll, LLC
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#

module Realize
  class Format
    # Cut a string using a range (start and end index).  You can also choose whether you wish the
    # range selection to be inclusive (default) or exclusive.
    #
    # Examples using the string: '012-345-6789'
    #
    # Exclusive vs. Inclusive
    #
    # [start_index: 4, end_index: 6, exclusive: false] => '345'
    # [start_index: 4, end_index: 6, exclusive: true]  => '34'
    #
    # Default Values / Omitted Options
    #
    # [end_index: 6]   => '012-345'
    # [start_index: 4] => '345-6789'
    class Substring
      acts_as_hashable

      DEFAULT_END_INDEX   = -1
      DEFAULT_START_INDEX = 0

      attr_reader :end_index, :exclusive, :start_index

      def initialize(
        end_index: DEFAULT_END_INDEX,
        exclusive: false,
        start_index: DEFAULT_START_INDEX
      )
        @end_index   = end_index.to_i
        @exclusive   = exclusive || false
        @start_index = start_index.to_i

        freeze
      end

      def transform(_resolver, value, _time, _record)
        exclusive ? value.to_s[start_index...end_index] : value.to_s[start_index..end_index]
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
realize-1.6.0	lib/realize/format/substring.rb
realize-1.5.0	lib/realize/format/substring.rb
realize-1.4.0	lib/realize/format/substring.rb