Class: Karenina::BookMark

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BookMark

Returns a new instance of BookMark.



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# File 'lib/karenina/bookmark.rb', line 11

def initialize
  @filename = ENV['HOME'] + '/.karenina_bookmark'
  get_mark
end

Instance Attribute Details

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/karenina/bookmark.rb', line 5

def filename
  @filename
end

#line ⇒ Object (readonly)

Returns the value of attribute line.



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# File 'lib/karenina/bookmark.rb', line 4

def line
  @line
end

Class Method Details

.get ⇒ Object 



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# File 'lib/karenina/bookmark.rb', line 7

def self.get
  self.new.line
end

Instance Method Details

#decrement ⇒ Object 



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# File 'lib/karenina/bookmark.rb', line 28

def decrement
  File.open(@filename, 'w+') {|f| f.puts @line -=1 }
end

#get_mark ⇒ Object 



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# File 'lib/karenina/bookmark.rb', line 16

def get_mark
  begin
     File.open(@filename, 'r+') {|f| @line = f.gets.to_i || 0}
  rescue
     @line = 0
  end
end

#increment ⇒ Object 



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# File 'lib/karenina/bookmark.rb', line 24

def increment
  File.open(@filename, 'w+') {|f| f.puts @line +=1 }
end