Class: Biryani::HPACK::DynamicTable

Inherits:
Object
  • Object
show all
Defined in:
lib/biryani/hpack/dynamic_table.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(limit) ⇒ DynamicTable

Returns a new instance of DynamicTable.

Parameters:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 7

def initialize(limit)
  @table = []
  @size = 0
  @limit = limit
end

Instance Attribute Details

#limit ⇒ Object (readonly)

Returns the value of attribute limit.



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# File 'lib/biryani/hpack/dynamic_table.rb', line 4

def limit
  @limit
end

#size ⇒ Object (readonly)

Returns the value of attribute size.



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# File 'lib/biryani/hpack/dynamic_table.rb', line 4

def size
  @size
end

Instance Method Details

#[](index) ⇒ Array?

Parameters:

Returns:

  • (Array, nil) 


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# File 'lib/biryani/hpack/dynamic_table.rb', line 46

def [](index)
  @table[index]
end

#chomp!(new_limit) ⇒ Object

Parameters:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 71

def chomp!(new_limit)
  while @size > new_limit
    n, v = @table.pop
    @size -= n.bytesize + v.bytesize + 32
  end
end

#count_entries ⇒ Integer

Returns:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 14

def count_entries
  @table.length
end

#entry_at(index) ⇒ Array

Returns [name, value].

Parameters:

Returns:

  • (Array) —

    [name, value]

Raises:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 53

def entry_at(index)
  raise Error::HPACKDecodeError if index.zero? || index > STATIC_TABLE_SIZE + count_entries

  if index <= STATIC_TABLE_SIZE
    STATIC_TABLE[index - 1]
  else
    self[index - 1 - STATIC_TABLE_SIZE]
  end
end

#find_field(name, value) ⇒ Array, Integer

Parameters:

Returns:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 31

def find_field(name, value)
  @table.each_with_index.find { |nv, _| nv[0] == name && nv[1] == value }
end

#find_name(name) ⇒ Array, Integer

Parameters:

Returns:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 39

def find_name(name)
  @table.each_with_index.find { |nv, _| nv[0] == name }
end

#limit!(new_limit) ⇒ Object

Parameters:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 79

def limit!(new_limit)
  chomp!(new_limit)
  @limit = new_limit
end

#name_at(index) ⇒ String

Parameters:

Returns:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 66

def name_at(index)
  entry_at(index)[0]
end

#store(name, value) ⇒ Object

Parameters:



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# File 'lib/biryani/hpack/dynamic_table.rb', line 20

def store(name, value)
  @table.unshift([name, value])
  @size += name.bytesize + value.bytesize + 32
  chomp!(@limit)
end