pdf-reader-find_text/lib/pdf/reader/find_text.rb

# frozen_string_literal: true

require "pdf-reader"

require_relative "find_text/version"

module PDF::Reader::FindText
  def find_text(value)
    runs(merge: false).each_cons(value.tr(' ', '').size).map do |chars|
      string = merge_runs_with_max_length(chars, value.size)
      string if string.text[0, value.size] == value
    end.compact
  end

  private

  def merge_runs_with_max_length(chars, length)
    chars.inject do |string, char|
      if string.mergable?(char) && string.text.size < length
        string + char
      else
        string
      end
    end
  end
end

PDF::Reader::Page.include PDF::Reader::FindText