Class: GemOnDemand::FileCache

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

Instance Method Summary collapse

Constructor Details

#initialize(dir) ⇒ FileCache

Returns a new instance of FileCache.



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# File 'lib/gem_on_demand/file_cache.rb', line 3

def initialize(dir)
  @dir = dir
end

Instance Method Details

#delete(file) ⇒ Object 



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# File 'lib/gem_on_demand/file_cache.rb', line 19

def delete(file)
  file = "#{@dir}/#{file}"
  File.unlink(file) if File.exist?(file)
end

#fetch(file, &block) ⇒ Object 



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# File 'lib/gem_on_demand/file_cache.rb', line 24

def fetch(file, &block)
  read(file) || write(file, yield)
end

#read(file) ⇒ Object 



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# File 'lib/gem_on_demand/file_cache.rb', line 14

def read(file)
  file = "#{@dir}/#{file}"
  Marshal.load(File.read(file)) if File.exist?(file)
end

#write(file, value) ⇒ Object 



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# File 'lib/gem_on_demand/file_cache.rb', line 7

def write(file, value)
  Utils.ensure_directory(@dir)
  file = "#{@dir}/#{file}"
  File.write(file, Marshal.dump(value))
  value
end