67 lines
1.9 KiB
Lua
67 lines
1.9 KiB
Lua
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local description = [=[
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Usage: lua bin2c.lua [+]filename [status]
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Write a C source file to standard output. When this C source file is
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included in another C source file, it has the effect of loading and
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running the specified file at that point in the program.
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The file named by 'filename' contains either Lua byte code or Lua source.
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Its contents are used to generate the C output. If + is used, then the
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contents of 'filename' are first compiled before being used to generate
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the C output. If given, 'status' names a C variable used to store the
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return value of either luaL_loadbuffer() or lua_pcall(). Otherwise,
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the return values of these functions will be unavailable.
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This program is (overly) careful to generate output identical to the
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output generated by bin2c5.1 from LuaBinaries.
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http://lua-users.org/wiki/BinTwoCee
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]=]
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if not arg or not arg[1] then
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io.stderr:write(description)
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return
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end
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local compile, filename = arg[1]:match"^(+?)(.*)"
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local status = arg[2]
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local content = compile=="+"
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and string.dump(assert(loadfile(filename)))
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or assert(io.open(filename,"rb")):read"*a"
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local function boilerplate(fmt)
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return string.format(fmt,
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status and "("..status.."=" or "",
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filename,
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status and ")" or "",
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status and status.."=" or "",
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filename)
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end
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local dump do
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local numtab={}; for i=0,255 do numtab[string.char(i)]=("%3d,"):format(i) end
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function dump(str)
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return (str:gsub(".", numtab):gsub(("."):rep(80), "%0\n"))
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end
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end
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io.write(boilerplate[=[
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/* code automatically generated by bin2c -- DO NOT EDIT */
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{
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/* #include'ing this file in a C program is equivalent to calling
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if (%sluaL_loadfile(L,%q)%s==0) %slua_pcall(L, 0, 0, 0);
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*/
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/* %s */
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static const unsigned char B1[]={
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]=], dump(content), boilerplate[=[
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};
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%siuplua_dobuffer(L,(const char*)B1,sizeof(B1),"="%q)%s;
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}
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]=])
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-- replaced by iuplua_dobuffer
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-- if (%sluaL_loadbuffer(L,(const char*)B1,sizeof(B1),"="%q)%s==0) %slua_pcall(L, 0, 0, 0);
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