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mods/futil/util/time.lua

@@ -0,0 +1,29 @@
+local idiv = futil.math.idiv
+
+-- convert a number of seconds into a more human-readable value
+-- ignores the actual passage of time and assumes all years are 365 days
+function futil.seconds_to_interval(time)
+	local s, m, h, d
+
+	time, s = idiv(time, 60)
+	time, m = idiv(time, 60)
+	time, h = idiv(time, 24)
+	time, d = idiv(time, 365)
+
+	if time ~= 0 then
+		return ("%d years %d days %02d:%02d:%02d"):format(time, d, h, m, s)
+	elseif d ~= 0 then
+		return ("%d days %02d:%02d:%02d"):format(d, h, m, s)
+	elseif h ~= 0 then
+		return ("%02d:%02d:%02d"):format(h, m, s)
+	elseif m ~= 0 then
+		return ("%02d:%02d"):format(m, s)
+	else
+		return ("%ds"):format(s)
+	end
+end
+
+-- ISO 8601 date format
+function futil.format_utc(timestamp)
+	return os.date("!%Y-%m-%dT%TZ", timestamp)
+end