Class: String

Inherits:
Object
  • Object
show all
Defined in:
lib/atech/extensions/string.rb

Direct Known Subclasses

Atech::UserAgent

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.generate_token(options = {}) ⇒ Object

Returns a psuedo-random UUID which sepearated by hyphens in standard UUID format. It’s worth noting this doesn’t actually follow the specification for Version 4 UUIDs.



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# File 'lib/atech/extensions/string.rb', line 14

def generate_token(options = {})
  values = [rand(0x0010000), rand(0x0010000), rand(0x0010000), rand(0x0010000), rand(0x0010000), rand(0x1000000), rand(0x1000000)]
  "%04x%04x-%04x-%04x-%04x-%06x%06x" % values
end

.random(size = 25) ⇒ Object

Returns a random string of the size specified. This can be used for salts or generated passwords. The generated string will only include lower case characters and numbers 0 though 9.



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# File 'lib/atech/extensions/string.rb', line 22

def random(size = 25)
  array = ('a'..'z').to_a + (0..9).to_a
  (0...size).map{ array[rand(array.size)] }.join
end

Instance Method Details

#first_character ⇒ Object

Returns the first character of a string.



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# File 'lib/atech/extensions/string.rb', line 41

def first_character
  case self[0]
  when 194..223
    return self[0,2]
  when 224..239
    return self[0,3]
  when 240..244
    return self[0,4]
  else
    return self[0,1]
  end
end

#to_md5(length = 32) ⇒ Object

Returns the hex-encoded MD5 hash value of the current string. Optionally, pass a value to limit the length of the returned SHA.



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# File 'lib/atech/extensions/string.rb', line 36

def to_md5(length = 32)
  Digest::MD5.hexdigest(self)[0,length]
end

#to_sha1(length = 40) ⇒ Object

Returns the hex-encoded SHA1 hash value of the current string. Optionally, pass a value to limit the length of the returned SHA.



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# File 'lib/atech/extensions/string.rb', line 30

def to_sha1(length = 40)
  Digest::SHA1.hexdigest(self)[0,length]
end