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-- via https://stackoverflow.com/questions/5723154/truncate-a-string-in-the-middle-with-javascript | |
-- https://stackoverflow.com/questions/831552/ellipsis-in-the-middle-of-a-text-mac-style/36470401#36470401 | |
function truncateMiddle (str, maxLength, separator) | |
maxLength = maxLength or 30 | |
separator = separator or "…" | |
if (maxLength < 1) then return str end | |
if (string.len(str) <= maxLength) then return str end | |
if (maxLength == 1) then return string.sub(str, 0, 1) .. separator end | |
midpoint = math.ceil(string.len(str) / 2) | |
toremove = string.len(str) - maxLength | |
lstrip = math.ceil(toremove / 2) | |
rstrip = toremove - lstrip | |
return string.sub(str, 1, midpoint - lstrip) .. separator .. string.sub(str, 1 + midpoint + rstrip) | |
end |
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