diff options
Diffstat (limited to 'lualibs-util-lua.lua')
| -rw-r--r-- | lualibs-util-lua.lua | 319 |
1 files changed, 60 insertions, 259 deletions
diff --git a/lualibs-util-lua.lua b/lualibs-util-lua.lua index f3be9dc..61d1190 100644 --- a/lualibs-util-lua.lua +++ b/lualibs-util-lua.lua @@ -41,291 +41,92 @@ luautilities.suffixes = { -- environment.loadpreprocessedfile can be set to a preprocessor -if jit or status.luatex_version >= 74 then - - local function register(name) - if tracestripping then - report_lua("stripped bytecode from %a",name or "unknown") - end - strippedchunks[#strippedchunks+1] = name - luautilities.nofstrippedchunks = luautilities.nofstrippedchunks + 1 - end - - local function stupidcompile(luafile,lucfile,strip) - local code = io.loaddata(luafile) - if code and code ~= "" then - code = load(code) - if code then - code = dump(code,strip and luautilities.stripcode or luautilities.alwaysstripcode) - if code and code ~= "" then - register(name) - io.savedata(lucfile,code) - return true, 0 - end - else - report_lua("fatal error %a in file %a",1,luafile) - end - else - report_lua("fatal error %a in file %a",2,luafile) - end - return false, 0 +local function register(name) + if tracestripping then + report_lua("stripped bytecode from %a",name or "unknown") end + strippedchunks[#strippedchunks+1] = name + luautilities.nofstrippedchunks = luautilities.nofstrippedchunks + 1 +end - -- quite subtle ... doing this wrong incidentally can give more bytes - - function luautilities.loadedluacode(fullname,forcestrip,name) - -- quite subtle ... doing this wrong incidentally can give more bytes - name = name or fullname - local code = environment.loadpreprocessedfile and environment.loadpreprocessedfile(fullname) or loadfile(fullname) +local function stupidcompile(luafile,lucfile,strip) + local code = io.loaddata(luafile) + if code and code ~= "" then + code = load(code) if code then - code() - end - if forcestrip and luautilities.stripcode then - if type(forcestrip) == "function" then - forcestrip = forcestrip(fullname) - end - if forcestrip or luautilities.alwaysstripcode then + code = dump(code,strip and luautilities.stripcode or luautilities.alwaysstripcode) + if code and code ~= "" then register(name) - return load(dump(code,true)), 0 - else - return code, 0 + io.savedata(lucfile,code) + return true, 0 end - elseif luautilities.alwaysstripcode then - register(name) - return load(dump(code,true)), 0 else - return code, 0 - end - end - - function luautilities.strippedloadstring(code,forcestrip,name) -- not executed - if forcestrip and luautilities.stripcode or luautilities.alwaysstripcode then - code = load(code) - if not code then - report_lua("fatal error %a in file %a",3,name) - end - register(name) - code = dump(code,true) - end - return load(code), 0 - end - - function luautilities.compile(luafile,lucfile,cleanup,strip,fallback) -- defaults: cleanup=false strip=true - report_lua("compiling %a into %a",luafile,lucfile) - os.remove(lucfile) - local done = stupidcompile(luafile,lucfile,strip ~= false) - if done then - report_lua("dumping %a into %a stripped",luafile,lucfile) - if cleanup == true and lfs.isfile(lucfile) and lfs.isfile(luafile) then - report_lua("removing %a",luafile) - os.remove(luafile) - end - end - return done - end - - function luautilities.loadstripped(...) - local l = load(...) - if l then - return load(dump(l,true)) - end - end - -else - - -- The next function was posted by Peter Cawley on the lua list and strips line - -- number information etc. from the bytecode data blob. We only apply this trick - -- when we store data tables. Stripping makes the compressed format file about - -- 1MB smaller (and uncompressed we save at least 6MB). - -- - -- You can consider this feature an experiment, so it might disappear. There is - -- no noticeable gain in runtime although the memory footprint should be somewhat - -- smaller (and the file system has a bit less to deal with). - -- - -- Begin of borrowed code ... works for Lua 5.1 which LuaTeX currently uses ... - - local function register(name,before,after) - local delta = before - after - if tracestripping then - report_lua("bytecodes stripped from %a, # before %s, # after %s, delta %s",name,before,after,delta) - end - strippedchunks[#strippedchunks+1] = name - luautilities.nofstrippedchunks = luautilities.nofstrippedchunks + 1 - luautilities.nofstrippedbytes = luautilities.nofstrippedbytes + delta - return delta - end - - local strip_code_pc - - if _MAJORVERSION == 5 and _MINORVERSION == 1 then - - strip_code_pc = function(dump,name) - local before = #dump - local version, format, endian, int, size, ins, num = byte(dump,5,11) - local subint - if endian == 1 then - subint = function(dump, i, l) - local val = 0 - for n = l, 1, -1 do - val = val * 256 + byte(dump,i + n - 1) - end - return val, i + l - end - else - subint = function(dump, i, l) - local val = 0 - for n = 1, l, 1 do - val = val * 256 + byte(dump,i + n - 1) - end - return val, i + l - end - end - local strip_function - strip_function = function(dump) - local count, offset = subint(dump, 1, size) - local stripped, dirty = rep("\0", size), offset + count - offset = offset + count + int * 2 + 4 - offset = offset + int + subint(dump, offset, int) * ins - count, offset = subint(dump, offset, int) - for n = 1, count do - local t - t, offset = subint(dump, offset, 1) - if t == 1 then - offset = offset + 1 - elseif t == 4 then - offset = offset + size + subint(dump, offset, size) - elseif t == 3 then - offset = offset + num - end - end - count, offset = subint(dump, offset, int) - stripped = stripped .. sub(dump,dirty, offset - 1) - for n = 1, count do - local proto, off = strip_function(sub(dump,offset, -1)) - stripped, offset = stripped .. proto, offset + off - 1 - end - offset = offset + subint(dump, offset, int) * int + int - count, offset = subint(dump, offset, int) - for n = 1, count do - offset = offset + subint(dump, offset, size) + size + int * 2 - end - count, offset = subint(dump, offset, int) - for n = 1, count do - offset = offset + subint(dump, offset, size) + size - end - stripped = stripped .. rep("\0", int * 3) - return stripped, offset - end - dump = sub(dump,1,12) .. strip_function(sub(dump,13,-1)) - local after = #dump - local delta = register(name,before,after) - return dump, delta + report_lua("fatal error %a in file %a",1,luafile) end - else - - strip_code_pc = function(dump,name) - return dump, 0 - end - + report_lua("fatal error %a in file %a",2,luafile) end + return false, 0 +end - -- ... end of borrowed code. +-- quite subtle ... doing this wrong incidentally can give more bytes +function luautilities.loadedluacode(fullname,forcestrip,name) -- quite subtle ... doing this wrong incidentally can give more bytes - - function luautilities.loadedluacode(fullname,forcestrip,name) - -- quite subtle ... doing this wrong incidentally can give more bytes - local code = environment.loadpreprocessedfile and environment.preprocessedloadfile(fullname) or loadfile(fullname) - if code then - code() + name = name or fullname + local code = environment.loadpreprocessedfile and environment.loadpreprocessedfile(fullname) or loadfile(fullname) + if code then + code() + end + if forcestrip and luautilities.stripcode then + if type(forcestrip) == "function" then + forcestrip = forcestrip(fullname) end - if forcestrip and luautilities.stripcode then - if type(forcestrip) == "function" then - forcestrip = forcestrip(fullname) - end - if forcestrip then - local code, n = strip_code_pc(dump(code),name) - return load(code), n - elseif luautilities.alwaysstripcode then - return load(strip_code_pc(dump(code),name)) - else - return code, 0 - end - elseif luautilities.alwaysstripcode then - return load(strip_code_pc(dump(code),name)) + if forcestrip or luautilities.alwaysstripcode then + register(name) + return load(dump(code,true)), 0 else return code, 0 end + elseif luautilities.alwaysstripcode then + register(name) + return load(dump(code,true)), 0 + else + return code, 0 end +end - function luautilities.strippedloadstring(code,forcestrip,name) -- not executed - local n = 0 - if (forcestrip and luautilities.stripcode) or luautilities.alwaysstripcode then - code = load(code) - if not code then - report_lua("fatal error in file %a",name) - end - code, n = strip_code_pc(dump(code),name) - end - return load(code), n - end - - local function stupidcompile(luafile,lucfile,strip) - local code = io.loaddata(luafile) - local n = 0 - if code and code ~= "" then - code = load(code) - if not code then - report_lua("fatal error in file %a",luafile) - end - code = dump(code) - if strip then - code, n = strip_code_pc(code,luautilities.stripcode or luautilities.alwaysstripcode,luafile) -- last one is reported - end - if code and code ~= "" then - io.savedata(lucfile,code) - end +function luautilities.strippedloadstring(code,forcestrip,name) -- not executed + if forcestrip and luautilities.stripcode or luautilities.alwaysstripcode then + code = load(code) + if not code then + report_lua("fatal error %a in file %a",3,name) end - return n + register(name) + code = dump(code,true) end + return load(code), 0 +end - local luac_normal = "texluac -o %q %q" - local luac_strip = "texluac -s -o %q %q" - - function luautilities.compile(luafile,lucfile,cleanup,strip,fallback) -- defaults: cleanup=false strip=true - report_lua("compiling %a into %a",luafile,lucfile) - os.remove(lucfile) - local done = false - if strip ~= false then - strip = true - end - if forcestupidcompile then - fallback = true - elseif strip then - done = os.spawn(format(luac_strip, lucfile,luafile)) == 0 - else - done = os.spawn(format(luac_normal,lucfile,luafile)) == 0 - end - if not done and fallback then - local n = stupidcompile(luafile,lucfile,strip) - if n > 0 then - report_lua("%a dumped into %a (%i bytes stripped)",luafile,lucfile,n) - else - report_lua("%a dumped into %a (unstripped)",luafile,lucfile) - end - cleanup = false -- better see how bad it is - done = true -- hm - end - if done and cleanup == true and lfs.isfile(lucfile) and lfs.isfile(luafile) then +function luautilities.compile(luafile,lucfile,cleanup,strip,fallback) -- defaults: cleanup=false strip=true + report_lua("compiling %a into %a",luafile,lucfile) + os.remove(lucfile) + local done = stupidcompile(luafile,lucfile,strip ~= false) + if done then + report_lua("dumping %a into %a stripped",luafile,lucfile) + if cleanup == true and lfs.isfile(lucfile) and lfs.isfile(luafile) then report_lua("removing %a",luafile) os.remove(luafile) end - return done end + return done +end - luautilities.loadstripped = loadstring - +function luautilities.loadstripped(...) + local l = load(...) + if l then + return load(dump(l,true)) + end end -- local getmetatable, type = getmetatable, type |