Module: LZWS::Option

Defined in:
lib/lzws/option.rb

Constant Summary collapse

DEFAULT_BUFFER_LENGTH = 
0

Class Method Summary collapse

Class Method Details

.get_compressor_options(options, buffer_length_names) ⇒ Object 



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# File 'lib/lzws/option.rb', line 13

def self.get_compressor_options(options, buffer_length_names)
  Validation.validate_hash options

  buffer_length_defaults = buffer_length_names.each_with_object({}) { |name, defaults| defaults[name] = DEFAULT_BUFFER_LENGTH }
  options                = buffer_length_defaults.merge options

  buffer_length_names.each { |name| Validation.validate_not_negative_integer options[name] }

  max_code_bit_length = options[:max_code_bit_length]
  unless max_code_bit_length.nil?
    Validation.validate_positive_integer max_code_bit_length
    raise ValidateError, "invalid max code bit length" if
      max_code_bit_length < LOWEST_MAX_CODE_BIT_LENGTH || max_code_bit_length > BIGGEST_MAX_CODE_BIT_LENGTH
  end

  without_magic_header = options[:without_magic_header]
  Validation.validate_bool without_magic_header unless without_magic_header.nil?

  block_mode = options[:block_mode]
  Validation.validate_bool block_mode unless block_mode.nil?

  msb = options[:msb]
  Validation.validate_bool msb unless msb.nil?

  unaligned_bit_groups = options[:unaligned_bit_groups]
  Validation.validate_bool unaligned_bit_groups unless unaligned_bit_groups.nil?

  quiet = options[:quiet]
  Validation.validate_bool quiet unless quiet.nil?

  options
end

.get_decompressor_options(options, buffer_length_names) ⇒ Object 



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# File 'lib/lzws/option.rb', line 46

def self.get_decompressor_options(options, buffer_length_names)
  Validation.validate_hash options

  buffer_length_defaults = buffer_length_names.each_with_object({}) { |name, defaults| defaults[name] = DEFAULT_BUFFER_LENGTH }
  options                = buffer_length_defaults.merge options

  buffer_length_names.each { |name| Validation.validate_not_negative_integer options[name] }

  without_magic_header = options[:without_magic_header]
  Validation.validate_bool without_magic_header unless without_magic_header.nil?

  msb = options[:msb]
  Validation.validate_bool msb unless msb.nil?

  unaligned_bit_groups = options[:unaligned_bit_groups]
  Validation.validate_bool unaligned_bit_groups unless unaligned_bit_groups.nil?

  quiet = options[:quiet]
  Validation.validate_bool quiet unless quiet.nil?

  options
end