38 lines
853 B
Lua
38 lines
853 B
Lua
-- Postprocessor
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local lastchar = " "
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local text = io.read("*a")
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text = "\n" .. text
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-- the most important step: everything assumes \n
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text = text:gsub("\r", "")
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-- tabs are always useless.
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-- get rid of them *before* removing comments so indented comments also get scrubbed.
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text = text:gsub("\t", "")
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text = text:gsub("\n%-%-[^\n]+", "")
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-- This is run after comment removal so that comments can be re-added.
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text = text:gsub("\n%%[^\n]+", function(s)
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return "\n" .. s:sub(3)
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end)
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local otext = text
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local function pass()
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text = text:gsub(".\n+.", function(i)
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local l = i:sub(1, 1) .. i:sub(#i)
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if not l:match("[^%(%)%{%}%,].") then
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return l
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end
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return i:sub(1, 1) .. "\n" .. i:sub(#i)
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end)
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end
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pass()
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while otext ~= text do
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otext = text
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pass()
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end
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-- Final processing
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text = text:gsub("^\n+", ""):gsub("\n+$", "")
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io.write(text)
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