rails_model_bulk_renme

#!/usr/bin/ruby

require 'active_support/core_ext/string'

if ARGV.size < 2
  puts "#{$0} old_string new_string"
  puts "example: #{$0} problem_set contest"
  exit
end

renames = { ARGV[0] => ARGV[1], ARGV[0].camelcase => ARGV[1].camelcase }

# directory names, file names, file content
[ 'd', 'f' ].each { |p| renames.each { |f, t| system " rename #{f} #{t} `find  \\( ! -regex '.*/\\..*' \\) -type #{p}` " } }
renames.each { |f, t| system "find  \\( ! -regex '.*/\\..*' \\) -type f | while read f; do sed -i 's/#{f}/#{t}/g' $f; done" }