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I'm using custom luapreproc so ???
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XeonSquared
parent
578a9e966f
commit
d455ac6f63
193
luapreproc.lua
Normal file
193
luapreproc.lua
Normal file
@ -0,0 +1,193 @@
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#!/usr/bin/env lua5.3
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local _env = {}
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local directives = {}
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function directives.include(env, args)
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local path, err = args.get("string", 1)
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if (not path) then
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return false, err
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end
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local nenv = {code = ""}
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setmetatable(nenv, {__index=_env})
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local data, err = nenv:process(path)
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if (not data) then
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return false, err
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end
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env.code = env.code .. "\n" .. data
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return true
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end
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local mods = {}
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function directives.loadmod(env, args)
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local path, err = args.get("string", 1)
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if (not path) then
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return false, err
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end
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local file = io.open(path, "rb")
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if (not file) then
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return false, "`"..path.."' not found."
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end
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local env = {}
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local copies = {{_G, env}}
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while #copies ~= 0 do
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local c = {}
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for i=1, #copies do
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for k, v in pairs(copies[i][1]) do
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if (type(v) == "table") then
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copies[i][2][k] = {}
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c[#c+1] = {v, copies[i][2][k]}
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else
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copies[i][2][k] = v
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end
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end
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end
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for i=1, #copies do
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copies[i] = nil
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end
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for i=1, #c do
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copies[i] = c[i]
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end
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end
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local dir2a = {}
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env.add_directive = function(name, func) do
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dir2a[#dir2a+1] = {name, func}
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end
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local func, err = load(file:read("*a"), "="..path, "t", env)
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if (not func) then
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return false, err
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end
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local name = func()
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if not name then
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return false, "Module did not return a name."
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end
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for i=1, #dir2a do
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directives[dir2a[i][1]] = dir2a[i][2]
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end
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return true
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end
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end
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function _env:process(path)
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print("PROC", path)
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local file = io.open(path, "rb")
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local f, err = load(file:read("*a"), "="..path)
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if not f then
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io.stderr:write("ERROR: "..err.."\n")
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os.exit(1)
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end
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file:seek("set", 0)
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local ln = 0
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for line in file:lines() do
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ln = ln + 1
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line = line:gsub("^%s+", "")
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if (line:sub(1, 3) == "--#") then
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--Process directive
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local dir = line:sub(4)
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local tmp = ""
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local open_quote = false
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local escape = false
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local cmd = nil
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local args = {}
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local pos = 0
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dir = dir:gsub("^%s+", ""):gsub("%s+$", ""):gsub("%s+", " ")
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for i=1, #dir do
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local c = dir:sub(i, i)
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if (c == " " and not open_quote) then
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if (tmp ~= "") then
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if not cmd then
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cmd = tmp
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else
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args[#args+1] = tmp
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end
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end
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tmp = ""
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elseif (c == "\"" and not escape and not open_quote) then
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open_quote = true
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elseif (c == "\"" and not escape) then
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open_quote = false
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args[#args+1] = {"string", tmp}
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tmp = ""
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elseif (c == "\\" and not escape) then
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escape = true
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else
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if (escape) then escape = false end
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tmp = tmp .. c
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end
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end
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--Process arguments
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local rargs = {}
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for i=1, #args do
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if (type(args[i]) == "table") then
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if (args[i][1] == "string") then
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local str = args[i][2]
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local sp, ep = str:find("%$%([%w_]+%)")
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while sp do
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local var = str:sub(sp, ep)
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local st1, st2 = str:sub(1, sp-3), str:sub(ep+2)
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str = st1 .. var
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local nsp = #str
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str = str .. st2
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sp, ep = str:find("%$%([%w_]+%)", nsp)
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end
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args[i][2] = str
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end
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rargs[#rargs+1] = args[i]
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elseif (tonumber(args[i])) then
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rargs[#rargs+1] = {"number", args[i]}
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elseif (args == "true" or args == "false") then
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rargs[#rargs+1] = {"boolean", args[i] == "true"}
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elseif (os.getenv(args[i])) then
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rargs[#rargs+1] = {"var", args[i]}
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else
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io.stderr:write("ERROR: "..path..":"..ln..": Undefined variable.\n")
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os.exit(1)
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end
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end
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if (not directives[cmd]) then
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io.stderr:write("ERROR: "..path..":"..ln..": Unknown directive.\n")
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os.exit(1)
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end
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local rtn, err = directives[cmd](self, {get=function(atype, i)
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if (type(atype) == "number") then
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return rargs[i][2], rargs[i][1]
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end
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if (rargs[i] == nil) then
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return false, "argument #"..i..": expected `"..atype.."', got nil"
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end
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if (rargs[i][1] ~= atype) then
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return false, "argument #"..i..": expected `"..atype.."', got `"..rargs[i][1].."'"
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end
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return rargs[i][2]
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end})
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if (type(rtn) ~= "boolean") then
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io.stderr:write("ERROR: "..path..":"..ln..": Expected return type `boolean', got `"..type(rtn).."'.\n")
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os.exit(1)
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end
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if (not rtn) then
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err = err or "Unknown error"
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io.stderr:write("ERROR: "..path..":"..ln..": "..err..".\n")
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end
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else
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self.code = self.code .. line .. "\n"
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end
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end
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return self.code
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end
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local env = {code = ""}
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setmetatable(env, {__index=_env})
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env:process(arg[1])
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local tmpfile = os.tmpname()
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local tmpf = io.open(tmpfile, "wb")
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tmpf:write(env.code)
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tmpf:close()
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--if (os.execute("lua minify.lua "..tmpfile.." > "..arg[2])) then
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if (os.execute("cat "..tmpfile.." > "..arg[2])) then
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os.execute("stat -c \"Output: %s bytes\" "..arg[2])
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else
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io.stderr:write("Error: ")
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os.execute("cat "..arg[2].." 1>&2")
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os.remove(arg[2])
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end
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os.remove(tmpfile)
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