Module: BaseConvert

Extended by:
BaseConvert
Included in:
BaseConvert, FromTo, Number
Defined in:
lib/base_convert/base_convert.rb,
lib/base_convert.rb,
lib/base_convert/number.rb,
lib/base_convert/from_to.rb,
lib/base_convert/configuration.rb

Overview

rosettacode.org/wiki/Non-decimal_radices/Convert#Ruby

Defined Under Namespace

Classes: FromTo, Number

Constant Summary collapse

VERSION = 
'3.1.191231'
QUOTES = 
%("'`).freeze
UNDERSCORE = 
'_'.freeze
AMBIGUOUS = 
'B8G6I1l0OQDS5Z2'.freeze
GRAPH = 
0.upto(255).map{|i| i.chr}.select{|c| c=~/[[:graph:]]/}.join.freeze
QGRAPH = 
GRAPH.delete(QUOTES).freeze
WORD_ = 
QGRAPH.chars.select{|c| c=~/\w/}.join.freeze
WORD = 
WORD_.delete(UNDERSCORE).freeze
UNAMBIGUOUS = 
WORD.delete(AMBIGUOUS).freeze
G94 = 
(WORD + QGRAPH.delete(WORD_) + QUOTES + UNDERSCORE).freeze
BASE64 = 
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.freeze
INDEXa = 
G94.index('a')
BASE = 
{
  :g94         => G94.length,          # 94
  :graph       => GRAPH.length,        # 94
  :qgraph      => QGRAPH.length,       # 91
  :word_       => WORD_.length,        # 63
  :word        => WORD.length,         # 62
  :unambiguous => UNAMBIGUOUS.length,  # 47
  :base64      => 64,
  :b64         => 64,
  :hexadecimal => 16,
  :hex         => 16,
  :h           => 16,
  :decimal     => 10,
  :dec         => 10,
  :d           => 10,
  :octal       => 8,
  :oct         => 8,
  :o           => 8,
  :binary      => 2,
  :bin         => 2,
  :b           => 2,
}
DIGITS = 
{
  :g94         => G94,
  :graph       => GRAPH,
  :g           => GRAPH,
  :qgraph      => QGRAPH,
  :q           => QGRAPH,
  :word_       => WORD_,
  :w_          => WORD_,
  :word        => WORD,
  :w           => WORD,
  :unambiguous => UNAMBIGUOUS,
  :u           => UNAMBIGUOUS,
  :base64      => BASE64,
  :b64         => BASE64,
}

Instance Method Summary collapse

Instance Method Details

#tob(integer = @integer, base = @base, digits = @digits) ⇒ Object 



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# File 'lib/base_convert/base_convert.rb', line 12

def tob(integer=@integer, base=@base, digits=@digits)
  return digits[0] if integer == 0
  string = ''
  while integer > 0
    integer, index = integer.divmod(base)
    string = string.insert(0, digits[index])
  end
  string
end

#toi(string = @string, base = @base, digits = @digits) ⇒ Object 



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# File 'lib/base_convert/base_convert.rb', line 3

def toi(string=@string, base=@base, digits=@digits)
  integer = 0
  string.each_char do |c|
    index = digits.index(c)
    integer = integer * base + index
  end
  integer
end