Class: Wunderbar::Asset

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

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Asset

Options: typically :name plus either :file or :contents

:name => name to be used for the asset
:file => source for the asset
:contents => contents of the asset



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# File 'lib/wunderbar/asset.rb', line 66

def initialize(options)
  source = options[:file] || __FILE__
  @contents = options[:contents]

  options[:name] ||= File.basename(options[:file]) if source

  if options[:name]
    @mtime = File.mtime(source)
    @path = options[:name]
    dest = File.expand_path(@path, Asset.root)

    if not File.exist?(dest) or File.mtime(dest) < @mtime
      begin
        FileUtils.mkdir_p File.dirname(dest)
        if options[:file]
          FileUtils.cp source, dest, :preserve => true
        else
          open(dest, 'w') {|file| file.write @contents}
        end
      rescue
        @path = nil unless Asset.virtual
        @contents ||= File.read(source)
      end
    end
  else
  end
end

Class Attribute Details

.path ⇒ Object

URI path prepended to individual asset path



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# File 'lib/wunderbar/asset.rb', line 18

def path
  @path
end

.root ⇒ Object

location where the asset directory is to be found/placed



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# File 'lib/wunderbar/asset.rb', line 21

def root
  @root
end

.virtual ⇒ Object

don’t fall back to content if file doesn’t exist on disk



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# File 'lib/wunderbar/asset.rb', line 24

def virtual
  @virtual
end

Instance Attribute Details

#contents ⇒ Object (readonly)

asset contents



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# File 'lib/wunderbar/asset.rb', line 31

def contents
  @contents
end

#mtime ⇒ Object (readonly)

asset modification time



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# File 'lib/wunderbar/asset.rb', line 34

def mtime
  @mtime
end

#path ⇒ Object (readonly)

asset file location



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# File 'lib/wunderbar/asset.rb', line 28

def path
  @path
end

Class Method Details

.clear ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 36

def self.clear
  @@scripts = []
  @@stylesheets = []
end

.content_type_for(path) ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 41

def self.content_type_for(path)
  if @@scripts.any? {|script| script.path == path}
    'application/javascript'
  elsif @@stylesheets.any? {|script| script.path == path}
    'text/css'
  else
    'application/octet-stream'
  end
end

.css(options) ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 98

def self.css(options)
  @@stylesheets << self.new(options)
end

.declarations(root, prefix) ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 112

def self.declarations(root, prefix)
  path = prefix.to_s + Asset.path

  unless @@scripts.empty?
    before = root.at('script')
    if before
      before = before.parent while before.parent and 
        not %w(head body).include? before.parent.name.to_s
    end
    parent = (before ? before.parent : root.at('body')) || root

    nodes = []
    @@scripts.each do |script|
      if script.path
        nodes << Node.new(:script, src: "#{path}/#{script.path}")
      elsif script.contents
        nodes << ScriptNode.new(:script, script.contents)
      end
    end

    nodes.each {|node| node.parent = parent}
    index = parent.children.index(before) || -1
    parent.children.insert(index, *nodes)
  end

  unless @@stylesheets.empty?
    before = root.at('link[rel=stylesheet]')
    if before
      before = before.parent while before.parent and 
        not %w(head body).include? before.parent.name.to_s
    end
    parent = (before ? before.parent : root.at('head')) || root

    nodes = []
    @@stylesheets.each do |stylesheet|
      if stylesheet.path
        nodes << Node.new(:link, rel: "stylesheet", type: "text/css",
          href: "#{path}/#{stylesheet.path}")
      elsif stylesheet.contents
        nodes << StyleNode.new(:style, stylesheet.contents)
      end
    end

    nodes.each {|node| node.parent = parent}
    index = parent.children.index(before) || -1
    parent.children.insert(index, *nodes)
  end
end

.find(path) ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 51

def self.find(path)
  (@@scripts.find {|script| script.path == path}) ||
    (@@stylesheets.find {|script| script.path == path})
end

.script(options) ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 94

def self.script(options)
  @@scripts << self.new(options)
end

.scripts ⇒ Object 



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# File 'lib/wunderbar/asset.rb', line 102

def self.scripts
  @@scripts.map do |script|
    if script.contents
      script.contents
    elsif script.path
      File.read(File.expand_path(script.path, Asset.root))
    end
  end
end