Class: SmartAsset

Inherits:
Object
  • Object
show all
Defined in:
lib/smart_asset.rb,
lib/smart_asset/helper.rb,
lib/smart_asset/adapters/rails3.rb,
lib/smart_asset/adapters/stasis.rb,
lib/smart_asset/adapters/sinatra.rb

Defined Under Namespace

Modules: Adapters, Helper Classes: SmartAssetRailtie, Stasis

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.append_random ⇒ Object

Returns the value of attribute append_random.



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# File 'lib/smart_asset.rb', line 15

def append_random
  @append_random
end

.asset_counter ⇒ Object

Returns the value of attribute asset_counter.



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# File 'lib/smart_asset.rb', line 15

def asset_counter
  @asset_counter
end

.asset_host ⇒ Object

Returns the value of attribute asset_host.



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# File 'lib/smart_asset.rb', line 15

def asset_host
  @asset_host
end

.cache ⇒ Object

Returns the value of attribute cache.



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# File 'lib/smart_asset.rb', line 15

def cache
  @cache
end

.config ⇒ Object

Returns the value of attribute config.



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# File 'lib/smart_asset.rb', line 15

def config
  @config
end

.dest ⇒ Object

Returns the value of attribute dest.



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# File 'lib/smart_asset.rb', line 15

def dest
  @dest
end

.env ⇒ Object

Returns the value of attribute env.



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# File 'lib/smart_asset.rb', line 15

def env
  @env
end

.envs ⇒ Object

Returns the value of attribute envs.



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# File 'lib/smart_asset.rb', line 15

def envs
  @envs
end

.pub ⇒ Object

Returns the value of attribute pub.



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# File 'lib/smart_asset.rb', line 15

def pub
  @pub
end

.root ⇒ Object

Returns the value of attribute root.



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# File 'lib/smart_asset.rb', line 15

def root
  @root
end

.sources ⇒ Object

Returns the value of attribute sources.



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# File 'lib/smart_asset.rb', line 15

def sources
  @sources
end

Class Method Details

.binary(root, relative_config = nil) ⇒ Object 



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# File 'lib/smart_asset.rb', line 17

def binary(root, relative_config=nil)
  load_config root, relative_config
  compress 'javascripts'
  compress 'stylesheets'
end

.compress(type) ⇒ Object 



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

def compress(type)
  dest = @dest[type]
  dir = "#{@pub}/#{@sources[type]}"
  ext = ext_from_type(type)
  packages = []
  time_cache = {}

  change = Change.new(dir)
  change.d
  states = change.send(:states)
  
  FileUtils.mkdir_p dest
  
  (@config[type] || {}).each do |package, files|
    next if ENV['PACKAGE'] && ENV['PACKAGE'] != package
    if files
      # Generate file hashes
      hashes = files.inject([]) do |array, file|
        path = "#{file}.#{ext}"
        if states[path]
          array << "#{states[path][:size]}#{states[path][:hash]}"
        end
        array
      end
      next if hashes.empty?
      
      # Modified hash
      hash = Digest::SHA1.hexdigest(hashes.join)[0..7]
      
      # Package path
      package = "#{dest}/#{hash}_#{package}.#{ext}"
      
      # If package file exists
      if File.exists?(package)
        packages << package
      else
        data = []
        
        # Join files in package
        files.each do |file|
          if File.exists?(source = "#{dir}/#{file}.#{ext}")
            data << File.read(source)
          end
        end
        
        # Don't create new compressed file if no data
        data = data.join("\n")
        next if data.strip.empty?
        
        # Compress joined files
        tmp = "#{dest}/tmp.#{ext}"
        File.open(tmp, 'w') { |f| f.write(data) }
        puts "\nCreating #{package}..."

        # Binary paths
        bin      = File.expand_path(File.dirname(__FILE__) + '/../bin')
        compiler = bin + '/compiler.jar'
        yui      = bin + '/yui.jar'
        
        if ext == 'js'
          warning = ENV['WARN'] ? nil : " --warning_level QUIET"
          cmd = "java -jar #{compiler} --js #{tmp} --js_output_file #{package}#{warning}"
        elsif ext == 'css'
          warning = ENV['WARN'] ? " -v" : nil
          cmd = "java -jar #{yui} #{tmp} -o #{package}#{warning}"
        end

        puts cmd if ENV['DEBUG']
        cmd_output = `#{cmd}`

        raise "Error running `#{cmd}`:\n#{cmd_output}"  unless $?.success?
        
        FileUtils.rm(tmp) unless ENV['DEBUG']
        
        # Fix YUI compression issue
        if ext == 'css'
          if RUBY_PLATFORM.downcase.include?('darwin')
            `sed -i '' 's/ and(/ and (/g' #{package}`
          else
            `sed -i 's/ and(/ and (/g' #{package}`
          end
        end
        
        # Package created
        packages << package
      end
    end
  end
  
  # Remove old/unused packages
  (Dir["#{dest}/#{"[^_]"*8}_*.#{ext}"] - packages).each do |path|
    FileUtils.rm path
  end
  
  # Delete legacy files
  Dir["#{dest}/*.yml", "#{dest}/#{"[0-9]"*14}_*.{css,js}"].each do |path|
    FileUtils.rm path
  end
end

.load_config(root, relative_config = nil) ⇒ Object 



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# File 'lib/smart_asset.rb', line 123

def load_config(root, relative_config=nil)
  relative_config ||= 'config/assets.yml'
  @root = File.expand_path(root)

  return unless File.file?("#{@root}/#{relative_config}")

  @cache = nil
  @config = YAML::load(File.read("#{@root}/#{relative_config}"))
  
  # Default values
  if @config['append_random'].nil?
    @config['append_random'] = {}
  end
  if @config['append_random'].is_a?(::Hash) && @config['append_random']['development'].nil?
    @config['append_random']['development'] = true
  end
  
  @config['asset_host_count'] ||= 4
  @config['asset_host'] ||= ActionController::Base.asset_host rescue nil
  @config['environments'] ||= %w(production)
  @config['public'] ||= 'public'
  
  @config['destination'] ||= {}
  @config['destination']['javascripts'] ||= 'javascripts/packaged'
  @config['destination']['stylesheets'] ||= 'stylesheets/packaged'
  
  @config['sources'] ||= {}
  @config['sources']['javascripts'] ||= "javascripts"
  @config['sources']['stylesheets'] ||= "stylesheets"
  
  # Convert from asset packager syntax
  %w(javascripts stylesheets).each do |type|
    if @config[type].respond_to?(:pop)
      @config[type] = @config[type].inject({}) do |hash, package|
        hash.merge! package
      end
    end
  end
  
  # Class variables
  @append_random = 
    if @config['append_random'].is_a?(::Hash)
      @config['append_random'][@env]
    else
      @config['append_random']
    end
  
  @asset_host = @config['asset_host']
  @envs = @config['environments']
  @sources = @config['sources']
  
  @pub = File.expand_path("#{@root}/#{@config['public']}")
  @dest = %w(javascripts stylesheets).inject({}) do |hash, type|
    hash[type] = "#{@pub}/#{@config['destination'][type]}"
    hash
  end
end

.paths(type, match) ⇒ Object 



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# File 'lib/smart_asset.rb', line 181

def paths(type, match)
  match = match.to_s
  
  @cache ||= {}
  @cache[type] ||= {}
  
  if @cache[type][match]
    return @cache[type][match]
  end
  
  dest = @dest[type]
  ext = ext_from_type type
  
  if @envs.include?(@env.to_s)
    @cache[type][match] =
      if result = Dir["#{dest}/#{"[^_]"*8}_#{match}.#{ext}"].first
        [ result.gsub(@pub, '') ]
      else
        []
      end
  elsif @config && @config[type]
    result = @config[type].collect do |package, files|
      if package.to_s == match
        files.collect do |file|
          file = "/#{@sources[type]}/#{file}.#{ext}"
          file if File.exists?("#{@pub}/#{file}")
        end
      end
    end
    result.flatten.compact.uniq
  end
end

.prepend_asset_host(path) ⇒ Object 



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# File 'lib/smart_asset.rb', line 214

def prepend_asset_host(path)
  if @asset_host.respond_to?(:keys)
    host = @asset_host[@env.to_s]
  else
    host = @asset_host
  end
  
  if host    
    if !@asset_counter || @asset_counter == @config['asset_host_count']
      @asset_counter = 0
    end
  
    count = @asset_counter.to_s
    @asset_counter += 1
  
    host.gsub('%d', count) + path
  else
    path
  end
end