script to translate rails projects

translator

require 'colorize'

PATTERNS = {
  rb: {
    quotes: /(?<free-quote>['"][A-Z].+?['"])/
  },
  html_erb: {
    tag_content_start: />(?<tag-content>(?!&.*;)[[:space:][:alnum:][:punct:]]+?)<%/,
    button_to: /<%=\s*button_to\s+(?!.*&.*;)(?<title>['"].+?['"])/,
    link_to: /<%=\s*link_to\s+(?!.*&.*;)(?<title>['"].+?['"])/,
    label_tag1: /<%=.*label(_tag)?[^,]+?(?<label-title>(['"].+?['"]|:[[:alnum:]_]+))[^,]+%>.*$/,
    label_tag2: /<%=.*label(_tag)?.*?,\s*(?<label-title>(['"].+?['"]|:[[:alnum:]_]+))/,
    submit_tag: /<%=.*submit(_tag)?\s+(?<submit-text>(['"].+?['"]|:[[:alnum:]_]+))/,
    tag_content: />(?<tag-content>(?!&.*;)[[:space:][:alnum:][:punct:]]+?)<\//
  }
}

# Find all files
paths = Dir.glob("**/*.html.erb") + Dir.glob("**/*_controller.rb")

paths.each do |path|
  puts path.green
  puts ("-" * path.size).green
  text = File.read(File.expand_path(path)).force_encoding("UTF-8")
  new_text = text.split("\n").map do |line|
    new_line = nil

    if path.end_with?('.html.erb')
      p = :html_erb
    else
      p = :rb
    end

    PATTERNS[p].each do |key, pattern|
      if m = pattern.match(line)
        m.names.each do |group_name|
          if /\w/.match(m[group_name])

            if group_name == 'tag-content'
              new_line = line.gsub(m[group_name], "<%= _('#{m[group_name]}' %>')")
              new_line_color = line.gsub(m[group_name], "<%= _('#{m[group_name]}') %>".blue)
            else
              new_line = line.gsub(m[group_name], "_(#{m[group_name]})")
              new_line_color = line.gsub(m[group_name], "_(#{m[group_name]})".blue)
            end

            puts key.to_s.yellow
            puts line.gsub(m[group_name], m[group_name].red)
            puts new_line_color
          end
        end
      end
    end

    unless new_line
      puts line
    end
    new_line || line
  end.join("\n") + "\n"

  dry_run = false
  unless dry_run
    open(File.expand_path(path), "w") { |f| f.write(new_text) }
  end
end