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-rw-r--r--lualibs-util-lua.lua319
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