21 lines
1.2 KiB
Text
21 lines
1.2 KiB
Text
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As described in [[UTF-8]] and in [[wp:UTF-8|Wikipedia]], UTF-8 is a popular encoding of (multi-byte) [[Unicode]] code-points into eight-bit octets.
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The goal of this task is to write a encoder that takes a unicode code-point (an integer representing a unicode character) and returns a sequence of 1–4 bytes representing that character in the UTF-8 encoding.
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Then you have to write the corresponding decoder that takes a sequence of 1–4 UTF-8 encoded bytes and return the corresponding unicode character.
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Demonstrate the functionality of your encoder and decoder on the following five characters:
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<pre>
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Character Name Unicode UTF-8 encoding (hex)
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---------------------------------------------------------------------------------
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A LATIN CAPITAL LETTER A U+0041 41
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ö LATIN SMALL LETTER O WITH DIAERESIS U+00F6 C3 B6
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Ж CYRILLIC CAPITAL LETTER ZHE U+0416 D0 96
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€ EURO SIGN U+20AC E2 82 AC
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𝄞 MUSICAL SYMBOL G CLEF U+1D11E F0 9D 84 9E
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</pre>
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Provided below is a reference implementation in Common Lisp.
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