RosettaCodeData/Task/URL-decoding/Lingo/url-decoding-1.lingo

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-- URL decodes a string
-- @param {string} str
-- @return {string}
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on urldecode (str)
res = ""
ba = bytearray()
len = str.length
repeat with i = 1 to len
c = str.char[i]
if (c = "%") then
-- fastest hex-to-dec conversion hack based on Lingo's rgb object
ba.writeInt8(rgb(str.char[i+1..i+2]).blue)
i = i + 2
else if (c = "+") then
ba.writeInt8(32)
else
ba.writeInt8(chartonum(c))
end if
end repeat
ba.position = 1
return ba.readRawString(ba.length)
end