Arbitrary number bases
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README.rdoc

Anybase

Arbitrary number bases

So often, I need to create random number bases, with random digits, to satisfy some crazy requirement.

Here is an example of how you'd do hex in Anybase.

base = Anybase.new('0123456789abcdef')
base.to_i('f0a')
=> 3850
base.to_native(123450)
=> "1e23a"

As well, you can tell Anybase to ignore case.

base = Anybase.new('0123456789abcdef', :ignore_case => true)
base.to_i('F0A')
=> 3850

Anybase can also have synonyms.

base = Anybase.new('0123456789abcdef', :synonyms => {'0' => 'oO'}, :ignore_case => true)
base.to_i('FoA')
=> 3850
base.to_i('FOA')
=> 3850

If you just want to translate the number to look at it you can use #normalize

base = Anybase.new('0123456789abcdef', :synonyms => {'0' => 'oO'}, :ignore_case => true)
base.normalize('FoA')
=> 'f0a'

If you want to use negative numbers, assign the sign character using the sign option

base = Anybase.new('0123456789abcdef', :sign => '-')
base.to_native(-12345)
=> '-3039'

Anybase can also zeropad your output with whatever your “zero” character is.

Anybase.new("012345678").to_native(1234, :zero_pad => 8)
=> '00001621'

Anybase also lets you create random numbers of any number of digits

Anybase.new("012345678").random(20)
=> '62400274212676317317'

Anybase gives you a few built-in: Anybase::Hex, Anybase::Base64, Anybase::Base64ForURL and Anybase::Base62 (should all be pretty self-explanatory)

As well, there is an AnyBase::Base73ForURL. This includes the characters: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789$-_.+!*\'(),