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21 lines
452 B
Lua
21 lines
452 B
Lua
-- PREPROC: preprocess input to be 7-bit
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-- This is released into the public domain.
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-- No warranty is provided, implied or otherwise.
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while true do
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local c = io.read(1)
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if not c then return end
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local bc = c:byte()
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if bc < 127 then
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io.write(c)
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else
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if bc <= 253 then
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-- 127(0) through 253(126)
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io.write("\x7F" .. string.char(bc - 127))
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else
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-- 254(0) through 255 (1)
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io.write("\x7F\x7F" .. string.char(bc - 254))
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end
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end
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end
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