-- -- Embed the Lua scripts into src/host/scripts.c as static data buffers. -- I embed the actual scripts, rather than Lua bytecodes, because the -- bytecodes are not portable to different architectures, which causes -- issues in Mac OS X Universal builds. -- local raw_sum = 0 local trim_sum = 0 local function stripfile(fname) dofile("scripts/luasrcdiet/LuaSrcDiet.lua") -- Let LuaSrcDiet do its job local s,l = get_slim_luasrc(fname) -- Now do some cleanup so we can write these out as C strings -- strip any CRs s = s:gsub("[\r]", "") -- overall counters raw_sum = raw_sum + l:len() trim_sum = trim_sum + s:len() -- escape backslashes s = s:gsub("\\", "\\\\") -- escape line feeds s = s:gsub("\n", "\\n") -- escape double quote marks s = s:gsub("\"", "\\\"") return s end local function writeline(out, s, continues) out:write("\t\"") out:write(s) out:write(iif(continues, "\"\n", "\",\n")) end local function writefile(out, fname, contents) local max = 1024 out:write("\t/* " .. fname .. " */\n") -- break up large strings to fit in Visual Studio's string length limit local start = 1 local len = contents:len() while start <= len do local n = len - start if n > max then n = max end local finish = start + n -- make sure I don't cut an escape sequence while contents:sub(finish, finish) == "\\" do finish = finish - 1 end writeline(out, contents:sub(start, finish), finish < len) start = finish + 1 end out:write("\n") end function doembed() raw_sum = 0 trim_sum = 0 fnames = "const char* builtin_script_fnames[] = {" -- load the manifest of script files scripts = dofile("src/_manifest.lua") -- main script always goes at the end table.insert(scripts, "_premake_main.lua") -- open scripts.c and write the file header local out = io.open("src/host/scripts.c", "w+b") out:write("/* Premake's Lua scripts, as static data buffers for release mode builds */\n") out:write("/* DO NOT EDIT - this file is autogenerated - see BUILD.txt */\n") out:write("/* To regenerate this file, run: premake4 embed */ \n\n") out:write("const char* builtin_scripts[] = {\n") for i,fn in ipairs(scripts) do print(fn) local s = stripfile("src/" .. fn) fnames = fnames .. "\n" .. "\t\"@" .. fn .. "\"," writefile(out, fn, s) end out:write("\t0\n};\n\n"); out:write(fnames); out:write("\n\t0\n};\n"); out:close() print(string.format("Lua scripts trimmed down to %2.1f%% of original size (%d/%d)", (trim_sum / raw_sum) * 100, trim_sum, raw_sum)) end