encoding
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def zero bytes, sep = ' '
bytes.unpack('C*').map { |e| '%02x' % e }.join sep
end
def table left, right
puts "#{'%8s' % left}: #{right}"
end
def one s, t
table t, (zero s.encode t)
end
def two s
table 'display', s
table 'unicode', s.codepoints.map { |e| 'U+%02X' % e }.join(' ')
end
def three s, *t
two s
t.each { |u| one s, u }
end
three "あ", 'utf-8', 'utf-16', 'utf-32', 'gb18030'
Ruby
INFO