Module: BitStream::Utils

Defined in:
lib/bitstream/utils.rb,
lib/types/string-utils.rb

Class Method Summary collapse

Class Method Details

.bit_lshift(s, bit) ⇒ Object 



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# File 'lib/types/string-utils.rb', line 10

def self.bit_lshift(s, bit)
  if bit != 0
    last_byte = nil
    (s.size - 1).times do |i|
      dbyte = s[i..(i + 1)].unpack('n')[0]
      c = dbyte >> (8 - bit)
      s[i] = (c & 0xff).chr
    end
  end
end

.bit_rshift(s, bit) ⇒ Object 



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# File 'lib/types/string-utils.rb', line 21

def self.bit_rshift(s, bit)
  if bit != 0
    s << "\0"
    first_byte = nil
    (s.size - 1).downto 1 do |i|
      dbyte = s[(i - 1)..i].unpack('n')[0]
      c = dbyte >> bit
      s[i] = (c & 0xff).chr
      first_byte = c >> 8
    end
    s[0] = first_byte.chr
  end
end

.camel2snake(camel) ⇒ Object 



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# File 'lib/bitstream/utils.rb', line 14

def self.camel2snake(camel)
  snake = camel.dup
  snake[0] = snake[0].downcase
  snake.gsub(/[A-Z]/) do |s|
    "_" + s.downcase
  end
end

.class2symbol(type) ⇒ Object 



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# File 'lib/bitstream/utils.rb', line 9

def self.class2symbol(type)
  name = type.name.split("::").last
  name = self.camel2snake(name).intern
end