Contents

# frozen_string_literal: true

module Pups
  class ReplaceCommand < Pups::Command
    attr_accessor :text, :from, :to, :filename, :direction, :global

    def self.from_hash(hash, params)
      replacer = new(params)
      replacer.from = guess_replace_type(hash['from'])
      replacer.to = guess_replace_type(hash['to'])
      replacer.text = File.read(hash['filename'])
      replacer.filename = hash['filename']
      replacer.direction = hash['direction'].to_sym if hash['direction']
      replacer.global = hash['global'].to_s == 'true'
      replacer
    end

    def self.guess_replace_type(item)
      # evaling to get all the regex flags easily
      item[0] == '/' ? eval(item) : item
    end

    def initialize(params)
      @params = params
    end

    def replaced_text
      new_to = to
      new_to = interpolate_params(to) if to.is_a?(String)
      if global
        text.gsub(from, new_to)
      elsif direction == :reverse
        index = text.rindex(from)
        text[0..index - 1] << text[index..-1].sub(from, new_to)
      else
        text.sub(from, new_to)
      end
    end

    def run
      Pups.log.info("Replacing #{from} with #{to} in #{filename}")
      File.open(filename, 'w') { |f| f.write replaced_text }
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
pups-1.1.1	lib/pups/replace_command.rb
pups-1.1.0	lib/pups/replace_command.rb