Created
September 3, 2009 23:18
-
-
Save probablycorey/180604 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
-- usage: lua luac.lua [file.lua]* [-L [module.lua]*] | |
-- | |
-- creates a precompiled chunk that preloads all modules listed after | |
-- -L and then runs all programs listed before -L. | |
-- | |
-- assumptions: | |
-- file xxx.lua contains module xxx | |
-- '/' is the directory separator (could have used package.config) | |
-- int and size_t take 4 bytes (could have read sizes from header) | |
-- does not honor package.path | |
-- | |
-- Luiz Henrique de Figueiredo <lhf@tecgraf.puc-rio.br> | |
-- Tue Aug 5 22:57:33 BRT 2008 | |
-- This code is hereby placed in the public domain. | |
local MARK="////////" | |
local NAME="luac" | |
local OUTPUT=NAME..".out" | |
NAME="=("..NAME..")" | |
local n=#arg | |
local m=n | |
local b | |
for i=1,n do | |
if arg[i]=="-L" then m=i-1 break end | |
end | |
if m+2<=n then b="local t=package.preload;\n" else b="local t;\n" end | |
for i=m+2,n do | |
b=b..string.gsub(arg[i],"^.-([^/]+)%.lua$","t['%1']=function()end;\n") | |
arg[i]=string.sub(string.dump(assert(loadfile(arg[i]))),13) | |
end | |
b=b.."t='"..MARK.."';\n" | |
for i=1,m do | |
b=b.."(function()end)();\n" | |
arg[i]=string.sub(string.dump(assert(loadfile(arg[i]))),13) | |
end | |
--print(b) | |
b=string.dump(assert(loadstring(b,NAME))) | |
local x,y=string.find(b,MARK) | |
b=string.sub(b,1,x-6).."\0"..string.sub(b,y+2,y+5) | |
f=assert(io.open(OUTPUT,"wb")) | |
assert(f:write(b)) | |
for i=m+2,n do | |
assert(f:write(arg[i])) | |
end | |
for i=1,m do | |
assert(f:write(arg[i])) | |
end | |
assert(f:write(string.rep("\0",12))) | |
assert(f:close()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment