Class: Template2rails::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/template2rails.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/template2rails.rb', line 30

def initialize(path)
  path = File.expand_path(path)
  File.exists?(path) or raise Exception.new("File #{path} not found.")
  @source_root = File.dirname(path)
  @asset_root = Rails.root.join('vendor','assets')
  f = File.open(path)
  @document = Nokogiri::HTML(f)
  @_csses = @document.css('link[rel=stylesheet]').dup
  @_jses = @document.css('script[src]').dup
  @_images = @document.css('img[src]').dup
  f.close
end

Instance Attribute Details

#_csses ⇒ Object

Returns the value of attribute _csses.



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# File 'lib/template2rails.rb', line 25

def _csses
  @_csses
end

#_images ⇒ Object

Returns the value of attribute _images.



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# File 'lib/template2rails.rb', line 25

def _images
  @_images
end

#_jses ⇒ Object

Returns the value of attribute _jses.



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# File 'lib/template2rails.rb', line 25

def _jses
  @_jses
end

#asset_root ⇒ Object

Returns the value of attribute asset_root.



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# File 'lib/template2rails.rb', line 23

def asset_root
  @asset_root
end

#source_root ⇒ Object

Returns the value of attribute source_root.



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# File 'lib/template2rails.rb', line 24

def source_root
  @source_root
end

Instance Method Details

#asset_file(file) ⇒ Object 



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# File 'lib/template2rails.rb', line 102

def asset_file(file)
  case File.extname(file)
    when '.css';
      prefix = 'stylesheets'
    when '.js';
      prefix = 'javascripts'
    when '.ttf', '.eot', '.woff', '.otf';
      prefix = 'fonts'
    when '.jpg', '.jpeg', '.png', '.gif', '.bmp';
      prefix = 'images'
    else;
      prefix = 'miscellaneous'
  end
  
  file = file.gsub(/(\.{0,2}\/)*((assets|resources|fonts)\/)*([^\n]+)/, '\4')
end

#asset_path(with_file = true) ⇒ Object 



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# File 'lib/template2rails.rb', line 140

def asset_path(with_file = true)
  paths = []
  @_csses.each do |css|
    dir = with_file ? css['href'] : File.dirname(css['href']) 
    paths.push(dir) unless paths.include?(dir) 
  end
  @_jses.each do |js|
    dir = with_file ? js['src'] : File.dirname(js['src']) 
    paths.push(dir) unless paths.include?(dir) 
  end
  @_images.each do |img|
    dir = with_file ? img['src'] : File.dirname(img['src']) 
    paths.push(dir) unless paths.include?(dir) 
  end
  paths
end

#copy_assets(asset_file) ⇒ Object 



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# File 'lib/template2rails.rb', line 119

def copy_assets(asset_file)
  asset_file = asset_file.split(/[\?\#]/)[0]
  
  # skip net assets
  if asset_file =~ /(https?\:)?\/\/[^\n]+/
    return 
  end
  
  realpath = File.expand_path("#{@source_root}/#{asset_file}")
  raise Exception.new "Error while parsing #{asset_file}:\n\tFile #{realpath} not found."\
    unless File.exists?(realpath)
  
  realdir  = File.dirname(realpath)
  
  require 'fileutils'
  tgt = "#{@asset_root}/#{asset_file(asset_file)}"
  FileUtils.cp(realpath, tgt) if File.exists?(realpath)
  
  update_asset(tgt, File.dirname(asset_file))
end

#prep_dirs ⇒ Object 



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# File 'lib/template2rails.rb', line 43

def prep_dirs
  require 'fileutils'
  FileUtils::rm_rf(@asset_root)
  asset_path(false).each do |path|
    # skip net assets
    if path =~ /(https?\:)?\/\/[^\n]+/
      next 
    end
    FileUtils::mkdir_p "#{@asset_root}/#{asset_file(path)}"
  end
end

#to_rails ⇒ Object 



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# File 'lib/template2rails.rb', line 55

def to_rails
  begin
    # check for head and body tag
    @document.at_xpath("/html/head") or raise Exception.new("Will not convert HTML without HEAD")
    @document.at_xpath("/html/body") or raise Exception.new("Will not convert HTML without BODY")
    # prepare required directories
    prep_dirs
    # start copying assets
    
    asset_path(true).each do |path|
      copy_assets(path)
    end
    
    # convert html to rails
    transform('css')
    transform('js')
    transform('images')
    transform('content', {:menu => ENV['MENU'], :content => ENV['CONTENT']})
    
    apply
  rescue Exception => error
    puts "#{error.backtrace[0]}:\n\t#{error.message}"
  end
end

#update_asset(asset, relativeTo) ⇒ Object 



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# File 'lib/template2rails.rb', line 80

def update_asset(asset, relativeTo)
  asset = asset.split(/[\?\#]/)[0]
  ext = File.extname(asset)
  return unless ext =~ /\.(css)/
  require 'find'
  text = File.read(asset)
  unless text.match(REGEXES[ext][:rgx]).nil?
    tgt = nil
    new_contents = text.gsub(REGEXES[ext][:rgx]) do |link|
      in_url = $1
      file = in_url.split(/[\?\#]/)[0]
      source_file = File.expand_path("#{@source_root}/#{relativeTo}/#{file}")
      dest_file   = File.expand_path("#{@asset_root}/#{asset_file(relativeTo)}/#{file}")
      dest_dir    = File.dirname(dest_file)
      File.directory?(dest_dir) or FileUtils.mkdir_p(dest_dir)
      FileUtils.cp(source_file, dest_file) if File.exists?(source_file)
      "url(#{dest_file.sub(/.+assets\/[^\/]+\/([^\n]+)/, '/assets/\1')})"
    end
    File.open(asset, 'wb') do |file| file.puts new_contents end
  end
end