Class: Dummer::Random

Inherits:
Object
  • Object
show all
Defined in:
lib/dummer/random.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Random

Returns a new instance of Random.



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# File 'lib/dummer/random.rb', line 3

def initialize
  @rand = ::Random.new(0)
  @chars = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a # no symbols and multi-bytes for now
end

Instance Method Details

#any(any) ⇒ Object 



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# File 'lib/dummer/random.rb', line 99

def any(any)
  any[rand(any.size)]
end

#datetime(opts = {}) ⇒ Object 



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# File 'lib/dummer/random.rb', line 73

def datetime(opts = {})
  format, random, value = (opts[:format] || "%Y-%m-%d %H:%M:%S.%3N"), (opts[:random] || false), opts[:value]
  if value
    Proc.new { value.strftime(format) }
  elsif random
    Proc.new {
      y = rand(1970..2037);
      m = rand(1..12);
      d = rand(1..27);
      h = rand(0..23);
      min = rand(0..59);
      s = rand(0..59);
      usec = rand(0..999999);
      Time.local(y, m, d, h, min, s, usec).strftime(format)
    }
  else
    Proc.new { Time.now.strftime(format) }
  end
end

#float(opts = {}) ⇒ Object 



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# File 'lib/dummer/random.rb', line 50

def float(opts = {})
  format, range, value = opts[:format], opts[:range], opts[:value]
  if format
    if value
      float = value.to_f
      Proc.new { sprintf(format, float) }
    elsif range
      Proc.new { sprintf(format, self.range(range)) }
    else
      Proc.new { r = rand(1..358); sprintf(format, r * Math.cos(r)) }
    end
  else
    if value
      float = value.to_f
      Proc.new { float }
    elsif range
      Proc.new { self.range(range) }
    else
      Proc.new { r = rand(1..358); r * Math.cos(r) }
    end
  end
end

#integer(opts = {}) ⇒ Object 



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# File 'lib/dummer/random.rb', line 23

def integer(opts = {})
  format, range, countup, value = opts[:format], opts[:range], opts[:countup], opts[:value]
  if format
    if value
      integer = sprintf(format, value.to_i)
      Proc.new { integer }
    elsif range
      Proc.new { sprintf(format, self.range(range)) }
    elsif countup
      Proc.new {|prev| v = prev + 1; [sprintf(format, v), v] }
    else
      Proc.new { sprintf(format, rand(0..2,147,483,647)) }
    end
  else
    if value
      integer = value.to_i
      Proc.new { integer }
    elsif range
      Proc.new { self.range(range) }
    elsif countup
      Proc.new {|prev| prev + 1 }
    else
      Proc.new { rand(0..2,147,483,647) }
    end
  end
end

#rand(arg = nil) ⇒ Object 



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# File 'lib/dummer/random.rb', line 103

def rand(arg = nil)
  @rand.rand(arg)
end

#range(range) ⇒ Object

private



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# File 'lib/dummer/random.rb', line 95

def range(range)
  rand(range)
end

#string(opts = {}) ⇒ Object

belows are data types

Returns:

  • Proc object which returns a random generated value, or [formatted_value, raw_value]



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# File 'lib/dummer/random.rb', line 11

def string(opts = {})
  length, any, value = (opts[:length] || 8), opts[:any], opts[:value]
  if value
    string = value.to_s
    Proc.new { string }
  elsif any
    Proc.new { self.any(any) }
  else
    Proc.new { Array.new(length){@chars[rand(@chars.size-1)]}.join }
  end
end