Class: Xlsxtream::IO::Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/xlsxtream/io/hash.rb

Instance Method Summary collapse

Constructor Details

#initialize(stream) ⇒ Hash

Returns a new instance of Hash.



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# File 'lib/xlsxtream/io/hash.rb', line 4

def initialize(stream)
  @stream = stream
  @hash = {}
  @path = nil
end

Instance Method Details

#<<(data) ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 10

def <<(data)
  @stream << data
end

#[](path) ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 34

def [](path)
  fetch(path)
rescue KeyError
  nil
end

#add_file(path) ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 14

def add_file(path)
  close
  @path = path
  @hash[@path] = [@stream.tell]
end

#close ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 20

def close
  @hash[@path] << @stream.tell if @path
end

#fetch(path) ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 24

def fetch(path)
  old = @stream.tell
  from, to = @hash.fetch(path)
  size = to - from
  @stream.seek(from)
  data = @stream.read(size)
  @stream.seek(old)
  data
end

#to_h ⇒ Object 



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# File 'lib/xlsxtream/io/hash.rb', line 40

def to_h
  ::Hash[@hash.keys.map {|path| [path, fetch(path)] }]
end