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Moligaloo/unicode2utf8.rb

Created August 22, 2015 08:47
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Convert two byte Unicode to UTF-8
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unicode2utf8.rb
#!/usr/bin/env ruby
# https://en.wikipedia.org/wiki/UTF-8
def unicode2utf8(str)
num = str.to_i(16)
c1 = 0xE0 + ((num & 0xF000) >> 12)
c2 = 0b10000000 + ((num & 0x0FC0) >> 6)
c3 = 0b10000000 + (num & 0x003F)
[c1, c2, c3].map{|c| "\\x" + c.to_s(16).upcase }.join
end
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