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



69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
 
# File 'lib/wunderbar/asset.rb', line 69

def initialize(options)
  @options = 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
  end
end

Class Attribute Details

.path ⇒ Object

URI path prepended to individual asset path



18
19
20
 
# File 'lib/wunderbar/asset.rb', line 18

def path
  @path
end

.root ⇒ Object

location where the asset directory is to be found/placed



21
22
23
 
# 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



24
25
26
 
# File 'lib/wunderbar/asset.rb', line 24

def virtual
  @virtual
end

Instance Attribute Details

#contents ⇒ Object (readonly)

asset contents



31
32
33
 
# File 'lib/wunderbar/asset.rb', line 31

def contents
  @contents
end

#mtime ⇒ Object (readonly)

asset modification time



34
35
36
 
# File 'lib/wunderbar/asset.rb', line 34

def mtime
  @mtime
end

#options ⇒ Object (readonly)

general options



37
38
39
 
# File 'lib/wunderbar/asset.rb', line 37

def options
  @options
end

#path ⇒ Object (readonly)

asset file location



28
29
30
 
# File 'lib/wunderbar/asset.rb', line 28

def path
  @path
end

Class Method Details

.clear ⇒ Object 



39
40
41
42
 
# File 'lib/wunderbar/asset.rb', line 39

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

.content_type_for(path) ⇒ Object 



44
45
46
47
48
49
50
51
52
 
# File 'lib/wunderbar/asset.rb', line 44

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 



101
102
103
 
# File 'lib/wunderbar/asset.rb', line 101

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

.declarations(root, prefix) ⇒ Object 



109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
 
# File 'lib/wunderbar/asset.rb', line 109

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 



54
55
56
57
 
# File 'lib/wunderbar/asset.rb', line 54

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

.script(options) ⇒ Object 



97
98
99
 
# File 'lib/wunderbar/asset.rb', line 97

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

.scripts ⇒ Object 



105
106
107
 
# File 'lib/wunderbar/asset.rb', line 105

def self.scripts
  @@scripts
end