summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/latex/l3kernel/expl3.lua
blob: 773079c944b3ec52658ed3ed188f84c9e4611fd7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
--
-- This is file `expl3.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- l3luatex.dtx  (with options: `package,lua')
-- l3names.dtx  (with options: `package,lua')
-- l3sys.dtx  (with options: `package,lua')
-- l3token.dtx  (with options: `package,lua')
-- l3intarray.dtx  (with options: `package,lua')
-- 
-- Copyright (C) 1990-2022 The LaTeX Project
-- 
-- It may be distributed and/or modified under the conditions of
-- the LaTeX Project Public License (LPPL), either version 1.3c of
-- this license or (at your option) any later version.  The latest
-- version of this license is in the file:
-- 
--    https://www.latex-project.org/lppl.txt
-- 
-- This file is part of the "l3kernel bundle" (The Work in LPPL)
-- and all files in that bundle must be distributed together.
-- 
-- File: l3luatex.dtx
ltx = ltx or {utils={}}
ltx.utils = ltx.utils or { }
local ltxutils = ltx.utils
local io       = io
local kpse     = kpse
local lfs      = lfs
local math     = math
local md5      = md5
local os       = os
local string   = string
local tex      = tex
local texio    = texio
local tonumber = tonumber
local abs        = math.abs
local byte       = string.byte
local floor      = math.floor
local format     = string.format
local gsub       = string.gsub
local lfs_attr   = lfs.attributes
local open       = io.open
local os_date    = os.date
local setcatcode = tex.setcatcode
local sprint     = tex.sprint
local cprint     = tex.cprint
local write      = tex.write
local write_nl   = texio.write_nl
local utf8_char  = utf8.char

local scan_int     = token.scan_int or token.scan_integer
local scan_string  = token.scan_string
local scan_keyword = token.scan_keyword
local put_next     = token.put_next
local token_create = token.create
local token_create_safe
do
  local is_defined = token.is_defined
  local set_char   = token.set_char
  local runtoks    = tex.runtoks
  local let_token  = token_create'let'

  function token_create_safe(s)
    local orig_token = token_create(s)
    if is_defined(s, true) then
      return orig_token
    end
    set_char(s, 0)
    local new_token = token_create(s)
    runtoks(function()
      put_next(let_token, new_token, orig_token)
    end)
    return new_token
  end
end

local true_tok     = token_create_safe'prg_return_true:'
local false_tok    = token_create_safe'prg_return_false:'
local command_id   = token.command_id
if not command_id and tokens and tokens.commands then
  local id_map = tokens.commands
  function command_id(name)
    return id_map[name]
  end
end
local kpse_find = (resolvers and resolvers.findfile) or kpse.find_file
local function escapehex(str)
  return (gsub(str, ".",
    function (ch) return format("%02X", byte(ch)) end))
end
local function filedump(name,offset,length)
  local file = kpse_find(name,"tex",true)
  if not file then return end
  local f = open(file,"rb")
  if not f then return end
  if offset and offset > 0 then
    f:seek("set", offset)
  end
  local data = f:read(length or 'a')
  f:close()
  return escapehex(data)
end
ltxutils.filedump = filedump
local md5_HEX = md5.HEX
if not md5_HEX then
  local md5_sum = md5.sum
  function md5_HEX(data)
    return escapehex(md5_sum(data))
  end
  md5.HEX = md5_HEX
end
local function filemd5sum(name)
  local file = kpse_find(name, "tex", true) if not file then return end
  local f = open(file, "rb") if not f then return end

  local data = f:read("*a")
  f:close()
  return md5_HEX(data)
end
ltxutils.filemd5sum = filemd5sum
local filemoddate
if os_date'%z':match'^[+-]%d%d%d%d$' then
  local pattern = lpeg.Cs(16 *
      (lpeg.Cg(lpeg.S'+-' * '0000' * lpeg.Cc'Z')
    + 3 * lpeg.Cc"'" * 2 * lpeg.Cc"'"
    + lpeg.Cc'Z')
  * -1)
  function filemoddate(name)
    local file = kpse_find(name, "tex", true)
    if not file then return end
    local date = lfs_attr(file, "modification")
    if not date then return end
    return pattern:match(os_date("D:%Y%m%d%H%M%S%z", date))
  end
else
  local function filemoddate(name)
    local file = kpse_find(name, "tex", true)
    if not file then return end
    local date = lfs_attr(file, "modification")
    if not date then return end
    local d = os_date("*t", date)
    local u = os_date("!*t", date)
    local off = 60 * (d.hour - u.hour) + d.min - u.min
    if d.year ~= u.year then
      if d.year > u.year then
        off = off + 1440
      else
        off = off - 1440
      end
    elseif d.yday ~= u.yday then
      if d.yday > u.yday then
        off = off + 1440
      else
        off = off - 1440
      end
    end
    local timezone
    if off == 0 then
      timezone = "Z"
    else
      if off < 0 then
        timezone = "-"
        off = -off
      else
        timezone = "+"
      end
      timezone = format("%s%02d'%02d'", timezone, hours // 60, hours % 60)
    end
    return format("D:%04d%02d%02d%02d%02d%02d%s",
        d.year, d.month, d.day, d.hour, d.min, d.sec, timezone)
  end
end
ltxutils.filemoddate = filemoddate
local function filesize(name)
  local file = kpse_find(name, "tex", true)
  if file then
    local size = lfs_attr(file, "size")
    if size then
      return size
    end
  end
end
ltxutils.filesize = filesize
local luacmd do
  local set_lua = token.set_lua
  local undefined_cs = command_id'undefined_cs'

  if not context and not luatexbase then require'ltluatex' end
  if luatexbase then
    local new_luafunction = luatexbase.new_luafunction
    local functions = lua.get_functions_table()
    function luacmd(name, func, ...)
      local id
      local tok = token_create(name)
      if tok.command == undefined_cs then
        id = new_luafunction(name)
        set_lua(name, id, ...)
      else
        id = tok.index or tok.mode
      end
      functions[id] = func
    end
  elseif context then
    local register = context.functions.register
    local functions = context.functions.known
    function luacmd(name, func, ...)
      local tok = token_create(name)
      if tok.command == undefined_cs then
        token.set_lua(name, register(func), ...)
      else
        functions[tok.index or tok.mode] = func
      end
    end
  end
end
local register_luadata, get_luadata

if luatexbase then
  local register = token_create'@expl@luadata@bytecode'.index
  if status.ini_version then
    local luadata, luadata_order = {}, {}

    function register_luadata(name, func)
      if luadata[name] then
        error(format("LaTeX error: data name %q already in use", name))
      end
      luadata[name] = func
      luadata_order[#luadata_order + 1] = func and name
    end
    luatexbase.add_to_callback("pre_dump", function()
      if next(luadata) then
        local str = "return {"
        for i=1, #luadata_order do
          local name = luadata_order[i]
          str = format('%s[%q]=%s,', str, name, luadata[name]())
        end
        lua.bytecode[register] = assert(load(str .. "}"))
      end
    end, "ltx.luadata")
  else
    local luadata = lua.bytecode[register]
    if luadata then
      lua.bytecode[register] = nil
      luadata = luadata()
    end
    function get_luadata(name)
      if not luadata then return end
      local data = luadata[name]
      luadata[name] = nil
      return data
    end
  end
end
-- File: l3names.dtx
local minus_tok = token.new(string.byte'-', 12)
local zero_tok = token.new(string.byte'0', 12)
local one_tok = token.new(string.byte'1', 12)
luacmd('tex_strcmp:D', function()
  local first = scan_string()
  local second = scan_string()
  if first < second then
    put_next(minus_tok, one_tok)
  else
    put_next(first == second and zero_tok or one_tok)
  end
end, 'global')
local cprint = tex.cprint
luacmd('tex_Ucharcat:D', function()
  local charcode = scan_int()
  local catcode = scan_int()
  cprint(catcode, utf8_char(charcode))
end, 'global')
luacmd('tex_filesize:D', function()
  local size = filesize(scan_string())
  if size then write(size) end
end, 'global')
luacmd('tex_mdfivesum:D', function()
  local hash
  if scan_keyword"file" then
    hash = filemd5sum(scan_string())
  else
    hash = md5_HEX(scan_string())
  end
  if hash then write(hash) end
end, 'global')
luacmd('tex_filemoddate:D', function()
  local date = filemoddate(scan_string())
  if date then write(date) end
end, 'global')
luacmd('tex_filedump:D', function()
  local offset = scan_keyword'offset' and scan_int() or nil
  local length = scan_keyword'length' and scan_int()
          or not scan_keyword'whole' and 0 or nil
  local data = filedump(scan_string(), offset, length)
  if data then write(data) end
end, 'global')
-- File: l3sys.dtx
do
  local os_exec = os.execute

  local function shellescape(cmd)
    local status,msg = os_exec(cmd)
    if status == nil then
      write_nl("log","runsystem(" .. cmd .. ")...(" .. msg .. ")\n")
    elseif status == 0 then
      write_nl("log","runsystem(" .. cmd .. ")...executed\n")
    else
      write_nl("log","runsystem(" .. cmd .. ")...failed " .. (msg or "") .. "\n")
    end
  end
  luacmd("__sys_shell_now:e", function()
    shellescape(scan_string())
  end, "global", "protected")
  local new_latelua = nodes and nodes.nuts and nodes.nuts.pool and nodes.nuts.pool.latelua or (function()
    local whatsit_id = node.id'whatsit'
    local latelua_sub = node.subtype'late_lua'
    local node_new = node.direct.new
    local setfield = node.direct.setwhatsitfield or node.direct.setfield
    return function(f)
      local n = node_new(whatsit_id, latelua_sub)
      setfield(n, 'data', f)
      return n
    end
  end)()
  local node_write = node.direct.write

  luacmd("__sys_shell_shipout:e", function()
    local cmd = scan_string()
    node_write(new_latelua(function() shellescape(cmd) end))
  end, "global", "protected")
end
  local gettimeofday = os.gettimeofday
  local epoch = gettimeofday() - os.clock()
  local write = tex.write
  local tointeger = math.tointeger
  luacmd('__sys_elapsedtime:', function()
    write(tointeger((gettimeofday() - epoch)*65536 // 1))
  end, 'global')
-- File: l3token.dtx
do
  local get_next = token.get_next
  local get_command = token.get_command
  local get_index = token.get_index
  local get_mode = token.get_mode or token.get_index
  local cmd = command_id
  local set_font = cmd'get_font'
  local biggest_char = token.biggest_char and token.biggest_char()
                    or status.getconstants().max_character_code

  local mode_below_biggest_char = {}
  local index_not_nil = {}
  local mode_not_null = {}
  local non_primitive = {
    [cmd'left_brace'] = true,
    [cmd'right_brace'] = true,
    [cmd'math_shift'] = true,
    [cmd'mac_param' or cmd'parameter'] = mode_below_biggest_char,
    [cmd'sup_mark' or cmd'superscript'] = true,
    [cmd'sub_mark' or cmd'subscript'] = true,
    [cmd'endv' or cmd'ignore'] = true,
    [cmd'spacer'] = true,
    [cmd'letter'] = true,
    [cmd'other_char'] = true,
    [cmd'tab_mark' or cmd'alignment_tab'] = mode_below_biggest_char,
    [cmd'char_given'] = true,
    [cmd'math_given' or 'math_char_given'] = true,
    [cmd'xmath_given' or 'math_char_xgiven'] = true,
    [cmd'set_font'] = mode_not_null,
    [cmd'undefined_cs'] = true,
    [cmd'call'] = true,
    [cmd'long_call' or cmd'protected_call'] = true,
    [cmd'outer_call' or cmd'tolerant_call'] = true,
    [cmd'long_outer_call' or cmd'tolerant_protected_call'] = true,
    [cmd'assign_glue' or cmd'register_glue'] = index_not_nil,
    [cmd'assign_mu_glue' or cmd'register_mu_glue'] = index_not_nil,
    [cmd'assign_toks' or cmd'register_toks'] = index_not_nil,
    [cmd'assign_int' or cmd'register_int'] = index_not_nil,
    [cmd'assign_attr' or cmd'register_attribute'] = true,
    [cmd'assign_dimen' or cmd'register_dimen'] = index_not_nil,
  }

  luacmd("__token_if_primitive_lua:N", function()
    local tok = get_next()
    local is_non_primitive = non_primitive[get_command(tok)]
    return put_next(
           is_non_primitive == true
             and false_tok
        or is_non_primitive == nil
             and true_tok
        or is_non_primitive == mode_not_null
             and (get_mode(tok) == 0 and true_tok or false_tok)
        or is_non_primitive == index_not_nil
             and (get_index(tok) and false_tok or true_tok)
        or is_non_primitive == mode_below_biggest_char
             and (get_mode(tok) > biggest_char and true_tok or false_tok))
  end, "global")
end
-- File: l3intarray.dtx
luacmd('__intarray:w', function()
  scan_int()
  tex.error'LaTeX Error: Isolated intarray ignored'
end, 'protected', 'global')

local scan_token = token.scan_token
local put_next = token.put_next
local intarray_marker = token_create_safe'__intarray:w'
local use_none = token_create_safe'use_none:n'
local use_i = token_create_safe'use:n'
local expand_after_scan_stop = {token_create_safe'exp_after:wN',
                                token_create_safe'scan_stop:'}
local comma = token_create(string.byte',')
local __intarray_table do
  local tables = get_luadata and get_luadata'__intarray' or {[0] = {}}
  function __intarray_table()
    local t = scan_token()
    if t ~= intarray_marker then
      put_next(t)
      tex.error'LaTeX Error: intarray expected'
      return tables[0]
    end
    local i = scan_int()
    local current_table = tables[i]
    if current_table then return current_table end
    current_table = {}
    tables[i] = current_table
    return current_table
  end
  if register_luadata then
    register_luadata('__intarray', function()
      local t = "{[0]={},"
      for i=1, #tables do
        t = string.format("%s{%s},", t, table.concat(tables[i], ','))
      end
      return t .. "}"
    end)
  end
end

local sprint = tex.sprint

luacmd('__intarray_gset_count:Nw', function()
  local t = __intarray_table()
  local n = scan_int()
  for i=#t+1, n do t[i] = 0 end
end, 'protected', 'global')

luacmd('intarray_count:N', function()
  sprint(-2, #__intarray_table())
end, 'global')
luacmd('__intarray_gset:wF', function()
  local i = scan_int()
  local t = __intarray_table()
  if t[i] then
    t[i] = scan_int()
    put_next(use_none)
  else
    tex.count.l__intarray_bad_index_int = i
    scan_int()
    put_next(use_i)
  end
end, 'protected', 'global')

luacmd('__intarray_gset:w', function()
  local i = scan_int()
  local t = __intarray_table()
  t[i] = scan_int()
end, 'protected', 'global')
luacmd('intarray_gzero:N', function()
  local t = __intarray_table()
  for i=1, #t do
    t[i] = 0
  end
end, 'global', 'protected')
luacmd('__intarray_item:wF', function()
  local i = scan_int()
  local t = __intarray_table()
  local item = t[i]
  if item then
    put_next(use_none)
  else
    tex.l__intarray_bad_index_int = i
    put_next(use_i)
  end
  put_next(expand_after_scan_stop)
  scan_token()
  if item then
    sprint(-2, item)
  end
end, 'global')

luacmd('__intarray_item:w', function()
  local i = scan_int()
  local t = __intarray_table()
  sprint(-2, t[i])
end, 'global')
local concat = table.concat
luacmd('__intarray_to_clist:Nn', function()
  local t = __intarray_table()
  local sep = token.scan_string()
  sprint(-2, concat(t, sep))
end, 'global')
luacmd('__intarray_range_to_clist:w', function()
  local t = __intarray_table()
  local from = scan_int()
  local to = scan_int()
  sprint(-2, concat(t, ',', from, to))
end, 'global')
luacmd('__intarray_gset_range:w', function()
  local from = scan_int()
  local t = __intarray_table()
  while true do
    local tok = scan_token()
    if tok == comma then
      repeat
        tok = scan_token()
      until tok ~= comma
      break
    else
      put_next(tok)
    end
    t[from] = scan_int()
    scan_token()
    from = from + 1
  end
  end, 'global', 'protected')