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-- if not modules then modules = { } end modules ['luatex-core'] = {
-- version = 1.001,
-- comment = 'companion to luatex',
-- author = 'Hans Hagen & Luigi Scarso',
-- copyright = 'LuaTeX Development Team',
-- }
LUATEXCOREVERSION = 1.003
-- This file overloads some Lua functions. The readline variants provide the same
-- functionality as LuaTeX <= 1.04 and doing it this way permits us to keep the
-- original io libraries clean. Performance is probably even a bit better now.
local type, next, getmetatable, require = type, next, getmetatable, require
local find, gsub, format = string.find, string.gsub, string.format
local io_open = io.open
local io_popen = io.popen
local io_lines = io.lines
local fio_readline = fio.readline
local fio_checkpermission = fio.checkpermission
local fio_recordfilename = fio.recordfilename
local mt = getmetatable(io.stderr)
local mt_lines = mt.lines
local saferoption = status.safer_option
local shellescape = status.shell_escape -- 0 (disabled) 1 (anything) 2 (restricted)
local kpseused = status.kpse_used -- 0 1
local write_nl = texio.write_nl
io.saved_lines = io_lines -- always readonly
mt.saved_lines = mt_lines -- always readonly
local function luatex_io_open(name,how)
if not how then
how = 'r'
end
local f = io_open(name,how)
if f then
if type(how) == 'string' and find(how,'w') then
fio_recordfilename(name,'w')
else
fio_recordfilename(name,'r')
end
end
return f
end
local function luatex_io_open_readonly(name,how)
if how then
how = 'r'
else
how = gsub(how,'[^rb]','')
if how == '' then
how = 'r'
end
end
local f = io_open(name,how)
if f then
fio_recordfilename(name,'r')
end
return f
end
local function luatex_io_popen(name,...)
local okay, found = fio_checkpermission(name)
if okay and found then
return io_popen(found,...)
end
end
local function luatex_io_lines(name,how)
if name then
local f = io_open(name,how or 'r')
if f then
return function()
return fio_readline(f)
end
end
else
return io_lines()
end
end
local function luatex_io_readline(f)
return function()
return fio_readline(f)
end
end
io.lines = luatex_io_lines
mt.lines = luatex_io_readline
-- We assume management to be provided by the replacement of kpse. This is the
-- case in ConTeXt.
if kpseused == 1 then
io.open = luatex_io_open
io.popen = luatex_io_popen
end
if saferoption == 1 then
local function installdummy(str,f)
local reported = false
return function(...)
if not reported then
write_nl(format("safer option set, function %q is %s",
str,f and "limited" or "disabled"))
reported = true
end
if f then
return f(...)
end
end
end
local function installlimit(str,f)
local reported = false
end
os.execute = installdummy("os.execute")
os.spawn = installdummy("os.spawn")
os.exec = installdummy("os.exec")
os.setenv = installdummy("os.setenv")
os.tempdir = installdummy("os.tempdir")
io.popen = installdummy("io.popen")
io.open = installdummy("io.open",luatex_io_open_readonly)
os.rename = installdummy("os.rename")
os.remove = installdummy("os.remove")
io.tmpfile = installdummy("io.tmpfile")
io.output = installdummy("io.output")
lfs.chdir = installdummy("lfs.chdir")
lfs.lock = installdummy("lfs.lock")
lfs.touch = installdummy("lfs.touch")
lfs.rmdir = installdummy("lfs.rmdir")
lfs.mkdir = installdummy("lfs.mkdir")
end
if saferoption == 1 or shellescape ~= 1 then
ffi = require('ffi')
for k, v in next, ffi do
if k ~= 'gc' then
ffi[k] = nil
end
end
ffi = nil
end
-- os.[execute|os.spawn|os.exec] already are shellescape aware)
if md5 then
local sum = md5.sum
local gsub = string.gsub
local format = string.format
local byte = string.byte
function md5.sumhexa(k)
return (gsub(sum(k), ".", function(c)
return format("%02x",byte(c))
end))
end
function md5.sumHEXA(k)
return (gsub(sum(k), ".", function(c)
return format("%02X",byte(c))
end))
end
end
if utilities and utilities.merger and utilities.merger.compact then
local byte, format, gmatch = string.byte, string.format, string.gmatch
local concat = table.concat
local data = gsub(io.loaddata('luatex-core.lua'),'if%s+utilities.*','')
local t = { }
local r = { }
local n = 0
local d = gsub(data,'\r\n','\n') -- be nice for unix
local s = utilities.merger.compact(d) -- no comments and less spaces
t[#t+1] = '/* generated from and by luatex-core.lua */'
t[#t+1] = ''
-- t[#t+1] = format('/*\n\n%s\n\n*/',d)
-- t[#t+1] = ''
t[#t+1] = '#include "lua.h"'
t[#t+1] = '#include "lauxlib.h"'
t[#t+1] = ''
t[#t+1] = 'int load_luatex_core_lua (lua_State * L);'
t[#t+1] = ''
t[#t+1] = 'int load_luatex_core_lua (lua_State * L)'
t[#t+1] = '{'
t[#t+1] = ' static unsigned char luatex_core_lua[] = {'
for c in gmatch(d,'.') do
if n == 16 then
n = 1
t[#t+1] = ' ' .. concat(r,', ') .. ','
else
n = n + 1
end
r[n] = format('0x%02x',byte(c))
end
n = n + 1
r[n] = '0x00'
t[#t+1] = ' ' .. concat(r,', ',1,n)
t[#t+1] = ' };'
-- t[#t+1] = format('unsigned int luatex_core_lua_len = 0x%x;',#d+1)
t[#t+1] = ' return luaL_dostring(L, (const char*) luatex_core_lua);'
t[#t+1] = '}'
io.savedata('luatex-core.c',concat(t,'\n'))
io.savedata('luatex-core-stripped.lua',s)
end
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