Class: Medo::FileTaskStorage

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, reader_class = JsonTaskReader, writer_class = JsonTaskWriter) ⇒ FileTaskStorage

Returns a new instance of FileTaskStorage.



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# File 'lib/medo/file_task_storage.rb', line 15

def initialize(filename, reader_class = JsonTaskReader, writer_class = JsonTaskWriter)
  @filename, @reader_class, @writer_class = filename, reader_class, writer_class
  FileUtils.touch(@filename)
end

Class Method Details

.using_storage(filename) ⇒ Object 



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# File 'lib/medo/file_task_storage.rb', line 8

def self.using_storage(filename)
  storage = self.new(filename)
  yield storage
ensure
  storage.dispose if storage
end

Instance Method Details

#commit ⇒ Object 



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# File 'lib/medo/file_task_storage.rb', line 38

def commit
  FileUtils.cp(tempfile.path, @filename)
end

#dispose ⇒ Object 



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# File 'lib/medo/file_task_storage.rb', line 42

def dispose
  tempfile.unlink
end

#read ⇒ Object 



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# File 'lib/medo/file_task_storage.rb', line 20

def read
  begin
    File.open(@filename, "rb") do |f|
      @reader_class.new(f).read
    end
  rescue => e
    []
  end
end

#write(tasks) ⇒ Object 



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# File 'lib/medo/file_task_storage.rb', line 30

def write(tasks)
  serializer = @writer_class.new(tempfile)
  serializer.add_tasks(tasks)
  serializer.write
ensure
  tempfile.close
end