Class: Drawer

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, store = DrawerStore) ⇒ Drawer

Returns a new instance of Drawer.



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# File 'lib/drawer.rb', line 19

def initialize(file, store = DrawerStore)
  @store = store
  @cache = store.load(file) || {}

  at_exit do
    save(file)
  end
end

Instance Attribute Details

#cache ⇒ Object (readonly)

Returns the value of attribute cache.



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# File 'lib/drawer.rb', line 16

def cache
  @cache
end

#store ⇒ Object (readonly)

Returns the value of attribute store.



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

def store
  @store
end

Class Method Details

.create(file) ⇒ Object 



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# File 'lib/drawer.rb', line 73

def self.create(file)
  unless File.exists?(file)
    FileUtils.mkdir_p File.dirname(file)
    FileUtils.touch(file)
  end
end

.open(file) {|drawer| ... } ⇒ Object

Yields:

  • (drawer) 


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# File 'lib/drawer.rb', line 60

def self.open(file, &block)
  file = File.expand_path(file)
  drawer = Drawer.new(file)
  yield drawer if block_given?
  drawer
end

.open!(file) ⇒ Object 



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# File 'lib/drawer.rb', line 67

def self.open!(file)
  file = File.expand_path(file)
  create(file)
  open(file)
end

.remove(file) ⇒ Object 



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

def self.remove(file)
  FileUtils.rm(file)
end

Instance Method Details

#add(k, v) ⇒ Object 



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# File 'lib/drawer.rb', line 40

def add(k, v)
  set(k, v) unless cache[k]
end

#flush_all ⇒ Object 



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# File 'lib/drawer.rb', line 48

def flush_all
  cache.clear
end

#get(k) ⇒ Object 



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# File 'lib/drawer.rb', line 28

def get(k)
  cache[k] or (set(k, yield) if block_given?)
end

#get_multi(*ks) ⇒ Object 



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# File 'lib/drawer.rb', line 32

def get_multi(*ks)
  ks.collect { |k| get(k) }
end

#inspect ⇒ Object 



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# File 'lib/drawer.rb', line 52

def inspect
  "Drawer count: #{cache.size}. Type 'cache' to view the content."
end

#remove(k) ⇒ Object 



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# File 'lib/drawer.rb', line 44

def remove(k)
  cache.delete(k)
end

#save(file) ⇒ Object 



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# File 'lib/drawer.rb', line 56

def save(file)
  store.save(@cache, file)
end

#set(k, v) ⇒ Object 



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# File 'lib/drawer.rb', line 36

def set(k, v)
  cache[k] = v
end