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local M = {}
-- 1 messages
function M.msg(...)
texio.write_nl(string.format(...))
end
function M.amsg(...)
texio.write(string.format(...))
end
function M.log(...)
texio.write_nl('log', string.format(...))
end
function M.alog(...)
texio.write('log', string.format(...))
end
function M.term(...)
texio.write_nl('term', string.format(...))
end
function M.err (...)
tex.error(string.format(...))
end
-- 1 saving modules and tables
local tables = package.loaded['minim-saved-tables']
or { ['minim:modules'] = { } }
local modules = tables ['minim:modules']
function M.remember (name)
if modules[name] == nil then
modules[name] = false -- will be a number if a bytecode register is reserved
modules[#modules+1] = name
end
end
function M.saved_table (identifier, table)
if tables[identifier] == nil then
tables[identifier] = table or { }
end
return tables[identifier]
end
-- saved tables may only contain values that can be converted to and from
-- strings with tostring() or other tables meeting the same requirement.
function M.table_to_text (tbl)
local r = { }
for i,t in pairs(tbl) do
local l = ''
if type(i) == 'string' then
l = string.format('[%q] = ', i)
else
l = string.format('[%s] = ', i)
end
if type(t) == 'table' then
l = l .. M.table_to_text (t)
elseif type(t) == 'string' then
l = l .. string.format ('%q', t)
else
l = l .. tostring(t)
end
r[#r+1] = l
end
return '{ ' .. table.concat (r,', ') .. ' }'
end
require('minim-callbacks')
M.remember('minim-callbacks')
M.remember('minim-alloc')
-- 1 allocation functions
-- like \unset
M.unset = -0x7FFFFFFF
local allocations = M.saved_table ('minim:allocations')
local function make_alloc_new (fname, globcount)
allocations[fname] = allocations[fname] or { }
M['new_'..fname] = function (id)
local nr
if id and allocations[fname][id] then
nr = allocations[fname][id]
else
nr = tex.count[globcount] + 1
tex.setcount('global', globcount, nr)
if id then allocations[fname][id] = nr end
M.log('\\%s%d : %s', fname, nr, id or '<unnamed>')
end
return nr
end
end
make_alloc_new ('attribute' , 'e@alloc@attribute@count' )
make_alloc_new ('whatsit' , 'e@alloc@whatsit@count' )
make_alloc_new ('luabytecode' , 'e@alloc@bytecode@count' )
make_alloc_new ('function' , 'e@alloc@luafunction@count' )
make_alloc_new ('luachunkname' , 'e@alloc@luachunk@count' )
make_alloc_new ('catcodetable' , 'e@alloc@ccodetable@count' )
make_alloc_new ('userrule' , 'e@alloc@rule@count' )
-- We need different allocation functions for the older registers, because
-- etex’s global allocation macros are off-by-one w.r.t. all other.
--
local function make_alloc_old (fname, globcount, loccount)
allocations[fname] = allocations[fname] or { }
M['new_'..fname] = function (id)
local nr
if id and allocations[fname][id] then
nr = allocations[fname][id]
else
nr = tex.count[globcount]
tex.setcount('global', globcount, nr + 1)
if id then allocations[fname][id] = nr end
M.log('\\%s%d : %s', fname, nr, id or '<unnamed>')
end
return nr
end
M['local_'..fname] = function ()
local nr = tex.count[loccount] - 1
tex.setcount(loccount, nr)
return nr
end
end
-- existing allocation counters
make_alloc_old ('count', 260, 270 )
make_alloc_old ('dimen', 261, 271 )
make_alloc_old ('skip', 262, 272 )
make_alloc_old ('muskip', 263, 273 )
make_alloc_old ('box', 264, 274 )
make_alloc_old ('toks', 265, 275 )
make_alloc_old ('marks', 266, 276 )
function M.luadef (csname, fn, ...)
local nr = M.new_function(csname)
lua.get_functions_table()[nr] = fn
token.set_lua(csname, nr, ...)
end
M.luadef ('minim:rememberalloc', function()
allocations[token.scan_string()][token.scan_string()] = tex.count['allocationnumber']
end)
-- 1 dumping information to the format file
-- reserve a bytecode register
local saved_tables_bytecode = M.new_luabytecode('saved_tables_bytecode')
-- we cannot use set_lua because lua functions are not included in the format file
token.set_macro('minim:restoremodules', '\\luabytecodecall'..saved_tables_bytecode)
local function dump_saved_tables()
M.msg('pre_dump: save modules and tables to format file')
-- save modules
for i,name in ipairs (modules) do
if not modules[name] then
M.msg('saving module '..name)
-- reserve (if necessary) a bytecode register
modules[name] = M.new_luabytecode ('module '..name)
-- store the file into the format file
lua.bytecode[modules[name]] = loadfile(kpse.find_file(name,'lua'))
end
end
-- save tables (and restore modules)
local saved_tables = [[
-- include all saved tables in this bytecode register
local t = ]]..M.table_to_text(tables)..[[
-- and make them available via require()
package.loaded['minim-saved-tables'] = t
-- restore all remembered modules from their saved bytecode
local s = t['minim:modules']
for _, name in ipairs (s) do
texio.write_nl('log', 'minim: restoring module '..name)
package.loaded[name] = lua.bytecode[ s[name] ] ()
end
]]
lua.bytecode[saved_tables_bytecode] = load(saved_tables)
end
callback.register ('pre_dump', dump_saved_tables)
--
return M
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