rhtml_to_html_erb

rhtml_to_html_erb.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
RAILS_ROOT = File.expand_path(File.join(File.dirname(__FILE__), '..'))

require 'fileutils'
require 'optparse'

FileUtils.cd(RAILS_ROOT)

runtime_options = {}

ARGV.options do |opts|
  script_name = File.basename($0)
  opts.banner = "Usage: ruby script/#{script_name} [options]"
  opts.separator ""

  opts.on("-p", "--pretend", 
          "Run but do not make any changes.") { |v| runtime_options[:pretend] = true }
  opts.on("-g", "--ignore-git", 
          "Don't use git command even if .git directory exists in ancestors of app/views") { |v| runtime_options[:ignore_git] = true }
  opts.on("-s", "--ignore-svn", 
          "Don't use svn command even if .svn directory exists.") { |v| runtime_options[:ignore_svn] = true }

  opts.separator ""
  opts.on("-h", "--help", "Show this help message.") { puts opts; exit }

  opts.parse!
end

MAX_DIR_DEPTH = 100

use_git = false
unless runtime_options[:ignore_git]
  dir = File.expand_path('app/views')
  depth = 0
  while true do
    parent_dir = File.dirname(dir)
    break if (depth += 1) > MAX_DIR_DEPTH
    break if parent_dir.nil? || (parent_dir == dir)
    dir = parent_dir
    if File.exist?(File.join(dir, '.git'))
      use_git = true
      break
    end
  end
end


target_files = Dir.glob('app/views/**/*.rhtml')
target_files.each do |target_file|
  use_svn = use_git ? false :
    !runtime_options[:ignore_svn] && !File.exist?(File.join(File.dirname(target_file), '.svn'))
  dest_filename = File.join(File.dirname(target_file), File.basename(target_file, '.rhtml') << '.html.erb')
  if use_svn
    cmd_str = "svn mv #{target_file} #{dest_filename}"
    puts cmd_str
    system(cmd_str) unless runtime_options[:pretend]
  elsif use_git
    cmd_str = "git mv #{target_file} #{dest_filename}"
    puts cmd_str
    system(cmd_str) unless runtime_options[:pretend]
  else
    FileUtils.mv(target_file, dest_filename, :noop => runtime_options[:pretend], :verbose => true)
  end
end