Cleanup views with tidy (erb)

cleanup_rails_views.rb

require 'tidy'
#Tidy.path = '/opt/local/lib/libtidy.dylib' # or where ever your tidylib resides
Tidy.path = '/usr/lib/libtidy.A.dylib'


def generate(files)
  tidy = Tidy.open(:show_warnings=>true) do |tidy|
    tidy.options.indent            = 'auto'
    tidy.options.show_body_only    = true
    tidy.options.output_xhtml      = true
    tidy.options.wrap              = 0
    tidy.options.indent_spaces     = 2
    tidy.options.indent_attributes = false
    tidy.options.vertical_space    = false
    tidy.options.char_encoding     = 'utf8'
    files.each do |f|
      template = File.read(f)
      xml = tidy.clean(template)
      xml = xml.strip.gsub(/\n+/, "\n")
      puts xml
      File.open(f, 'w') do |out|
        out.puts(xml)
      end
    end; nil
  end
end

view_files = Dir["app/**/**/**.erb"]
generate(view_files)

### find app/ -type f -name "*.erb" -exec tidy -m -utf8 -i  -ashtml {} \;

custom_version.rb

#!/usr/bin/env ruby
# http://blog.neontology.com/articles/2006/05/10/beautiful-ruby-in-textmate
# http://www.arachnoid.com/ruby/rubyBeautifier.html
#
# Ruby beautifier, version 1.3, 04/03/2006
# Copyright (c) 2006, P. Lutus
# TextMate modifications by T. Burks
# Vim modifications by Luis Mondesi
# Released under the GPL

$tabSize = 2
$tabStr = " "

# indent regexp tests

$indentExp = [
/^\<[^\/%]*\>$/,
/^\<%[^=]* do .*%\>$/,
/^\<%[^=]* if .*%\>$/,
/^\<%[^=]* unless .*%\>$/,
/^\<%[^=]*\{[^\}]*%\>$/
]

# outdent regexp tests

$outdentExp = [
/^\<\/.*\>$/,
/^\<%.* end .*%\>$/,
/^\<%.*\}.*%\>$/
]

def makeTab(tab)
return (tab < 0)? "":$tabStr * $tabSize * tab
end

def addLine(line,tab)
line.strip!
line = makeTab(tab)+line if line.length > 0
return line + "\n"
end

def beautifyERB(source)
  commentBlock = false
  multiLineArray = Array.new
  multiLineStr = ""
  tab = 0
  dest = ""
  source.split("\n").each do |line|
    # combine continuing lines
    if(!(line =~ /^\s*#/) && line =~ /[^\\]\\\s*$/)
      multiLineArray.push line
      multiLineStr += line.sub(/^(.*)\\\s*$/,"\\1")
      next
    end

    # add final line
    if(multiLineStr.length > 0)
      multiLineArray.push line
      multiLineStr += line.sub(/^(.*)\\\s*$/,"\\1")
    end

    tline = ((multiLineStr.length > 0)?multiLineStr:line).strip
    if(tline =~ /^=begin/)
      commentBlock = true
    end
    if(commentBlock)
      # add the line unchanged
      dest += line + "\n"
    else
      commentLine = (tline =~ /^#/)
      if(!commentLine)
        # throw out sequences that will
        # only sow confusion
        $outdentExp.each do |re|
          if(tline =~ re)
            tab -= 1
            break
          end
        end
      end
      if (multiLineArray.length > 0)
        multiLineArray.each do |ml|
          dest += addLine(ml,tab)
        end
        multiLineArray.clear
        multiLineStr = ""
      else
        dest += addLine(line,tab)
      end
      if(!commentLine)
        $indentExp.each do |re|
          if(tline =~ re && !(tline =~ /\s+end\s*$/))
            tab += 1
            break
          end
        end
      end
    end
    if(tline =~ /^=end/)
      commentBlock = false
    end
  end
  dest
end


def generate(files)
  files.each do |f|
    template = File.read(f)
    ready_html = beautifyERB(template)
    File.open(f, 'w') do |out|
      out.puts(ready_html)
    end
  end; nil
end

view_files = Dir["app/**/**/**.erb"]
generate(view_files)