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Albert Chou

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Unix Shell Script Providing Ruby On Rails Enhanced String Methods

11.18.2007

| 6087 views |

        Assuming you have Rails installed as a gem, the following Unix shell script (which I named String, but you can name anything you want when you save the following into a file) allows you to call Ruby String methods (including, importantly, the methods that the Rails ActiveSupport extensions add) on an arbitrary number of arguments, and it will print out the results, e.g.,

$ String camelize snake_case_example another_snake_case_example

The output is:

SnakeCaseExample
AnotherSnakeCaseExample

#!/usr/bin/env ruby

if ARGV.size > 1 then
  gem 'activesupport'
  require 'active_support/core_ext/string/inflections'

  class String
    include ActiveSupport::CoreExtensions::String::Inflections
  end

  command = ARGV.shift
  ARGV.each { |argument|
    puts argument.send( command )
  }
else
  # Print usage information
  puts "Usage: #{File.basename( __FILE__ )} <command> <argument_1> [<argument_2> ...]"
end

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