UTF-8 encode and decode: Difference between revisions

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=={{header|Lingo}}==

Since UTF-8 is Lingo's native string encoding, and UTF-8 strings can be read into byteArrays (and v.v.), such UTF-8 encoding and decoding is built-in.<br />

<br />

Relevant Lingo functions are:<br />

charToNum(string): converts single-character string to unicode code point (int)<br />

numToChar(int): converts unicode code point (int) to single-character string<br />

byteArray(string): creates byte array of UTF-8 bytes for string<br />

byteArray.toHexString(start, length): returns hex string representation of byte array (e.g. for printing)<br />

<br />

Some simple demo code:

<lang Lingo>chars = ["A", "ö", "Ж", "€", "𝄞"]

put "Character Unicode (int) UTF-8 encoding (hex)"

repeat with c in chars

ba = bytearray(c)

put col(c, 12) & col(charToNum(c), 16) & ba.toHexString(1, ba.length)

end repeat</lang>

Helper function for table formatting

<lang Lingo>on col (val, len)

str = string(val)

repeat with i = str.length+1 to len

put " " after str

end repeat

return str

end</lang>

{{out}}

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-- "Character Unicode (int) UTF-8 encoding (hex)"

-- "A 65 41"

-- "ö 246 c3 b6"

-- "Ж 1046 d0 96"

-- "€ 8364 e2 82 ac"

-- "𝄞 119070 f0 9d 84 9e"