Module: Incline::Extensions::String

Defined in:
lib/incline/extensions/string.rb

Overview

Defines or overrides few string helper methods.

Instance Method Summary collapse

Instance Method Details

#to_bool ⇒ Object

Converts a string into a boolean value.

The following values are considered true: true, t, yes, y, on, 1 Everything else will be false.



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# File 'lib/incline/extensions/string.rb', line 43

def to_bool
  %w(true t yes y on 1).include?(self.downcase)
end

#to_byte_string ⇒ Object

Converts a hex string into a byte string.

Whitespace in the string is ignored. The string must only contain characters valid for hex (ie - 0-9, A-F, a-f). The string must contain an even number of characters since each character only represents half a byte.



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# File 'lib/incline/extensions/string.rb', line 13

def to_byte_string
  ret = self.gsub(/\s+/,'')
  raise 'Hex string must have even number of characters.' unless ret.size % 2 == 0
  raise 'Hex string must only contain 0-9 and A-F characters.' if ret =~ /[^0-9a-fA-F]/
  [ret].pack('H*').force_encoding('ascii-8bit')
end

#to_hex_string(grouping = false) ⇒ Object

Converts a binary string into a hex string.

The grouping parameter can be set to true or an integer value specifying how many chars you want in each group. If true or less than 1, then characters are put into groups of 2.



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# File 'lib/incline/extensions/string.rb', line 25

def to_hex_string(grouping = false)
  ret = self.unpack('H*').first
  if grouping
    if grouping.is_a?(::Integer) && grouping > 0
      ret.gsub(/(#{'.' * grouping})/,'\1 ').rstrip
    else
      ret.gsub(/(..)/,'\1 ').rstrip
    end
  else
    ret
  end
end