summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/luatex/luatexja/luatexja.lua
blob: 0e9f64ee310aa64d8ab698a700f514d8327d1439 (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

require('lualibs')

------------------------------------------------------------------------
-- naming:
--    ext_... : called from \directlua{}
--    int_... : called from other Lua codes, but not from \directlua{}
--    (other)     : only called from this file
function luatexja.load_module(name)
   require('ltj-' .. name.. '.lua')
end
function luatexja.load_lua(fn)
   local found = kpse.find_file(fn, 'tex')
   if not found then
      tex.error("LuaTeX-ja error: File `" .. fn .. "' not found")
   else 
      texio.write_nl('(' .. found .. ')')
      dofile(found)
   end
end

--- 以下は全ファイルで共有される定数
local icflag_table = {}
luatexja.icflag_table = icflag_table
icflag_table.ITALIC          = 1
icflag_table.PACKED          = 2
icflag_table.KINSOKU         = 3
icflag_table.FROM_JFM        = 6
-- FROM_JFM: 4, 5, 6, 7, 8 →優先度高(伸びやすく,縮みやすい)
-- 6 が標準
icflag_table.KANJI_SKIP      = 9
icflag_table.KANJI_SKIP_JFM  = 10
icflag_table.XKANJI_SKIP     = 11
icflag_table.XKANJI_SKIP_JFM = 12
icflag_table.PROCESSED       = 13
icflag_table.IC_PROCESSED    = 14
icflag_table.BOXBDD          = 15
icflag_table.PROCESSED_BEGIN_FLAG = 128

local stack_table_index = {}
luatexja.stack_table_index = stack_table_index
stack_table_index.PRE  = 0x200000 -- characterごと
stack_table_index.POST = 0x400000 -- characterごと
stack_table_index.KCAT = 0x600000 -- characterごと
stack_table_index.XSP  = 0x800000 -- characterごと
stack_table_index.RIPRE  = 0xA00000 -- characterごと,ruby pre
stack_table_index.RIPOST = 0xC00000 -- characterごと,ruby post
stack_table_index.JWP  = 0 -- これだけ
stack_table_index.KSK  = 1 -- これだけ
stack_table_index.XSK  = 2 -- これだけ
stack_table_index.MJT  = 0x100 -- 0--255
stack_table_index.MJS  = 0x200 -- 0--255
stack_table_index.MJSS = 0x300 -- 0--255
stack_table_index.KSJ  = 0x400 -- 0--9

local userid_table = {}
luatexja.userid_table = userid_table
userid_table.IHB  = luatexbase.newuserwhatsitid('inhibitglue',  'luatexja') -- \inhibitglue
userid_table.STCK = luatexbase.newuserwhatsitid('stack_marker', 'luatexja') -- スタック管理
userid_table.BPAR = luatexbase.newuserwhatsitid('begin_par',    'luatexja') -- 「段落始め」

------------------------------------------------------------------------
-- FIX node.remove
------------------------------------------------------------------------
do
   local node_remove, node_next, node_prev = node.remove, node.next, node.prev
   function luatexja.node_remove (head, current)
      if head==current then
         local q, r = node_next(current), node_prev(current)
         if q then q.prev = r end
         if r and node_next(r)==current then 
            r.next = q
         end
         return q, q
      else
         return node_remove(head, current)
      end
   end
   local Dnode = node.direct or node
   if Dnode~=node then
      local Dnode_remove, setfield = Dnode.remove, Dnode.setfield
      local Dnode_next, Dnode_prev = Dnode.getnext, Dnode.getprev
      function luatexja.Dnode_remove (head, current)
         if head==current then
            local q, r = Dnode_next(current), Dnode_prev(current)
            if q then setfield(q, 'prev', r) end
            if r and Dnode_next(r) == current then
               setfield(r, 'next', q)
            end
            return q, q
         else
            return Dnode_remove(head, current)
         end
      end
   else
      luatexja.Dnode_remove = luatexja.node_remove 
   end
end

--- 定義終わり

local load_module = luatexja.load_module
load_module('base');      local ltjb = luatexja.base
load_module('rmlgbm');    local ltjr = luatexja.rmlgbm -- must be 1st
load_module('charrange'); local ltjc = luatexja.charrange
load_module('jfont');     local ltjf = luatexja.jfont
load_module('inputbuf');  local ltji = luatexja.inputbuf
load_module('stack');     local ltjs = luatexja.stack
load_module('pretreat');  local ltjp = luatexja.pretreat
load_module('jfmglue');   local ltjj = luatexja.jfmglue
load_module('setwidth');  local ltjw = luatexja.setwidth
load_module('math');      local ltjm = luatexja.math
load_module('tangle');    local ltjb = luatexja.base

local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
local attr_yablshift = luatexbase.attributes['ltj@yablshift']
local attr_icflag = luatexbase.attributes['ltj@icflag']
local attr_uniqid = luatexbase.attributes['ltj@uniqid']
local cat_lp = luatexbase.catcodetables['latex-package']

-- Three aux. functions, bollowed from tex.web

local unity=65536
local floor = math.floor

local function print_scaled(s)
   local out=''
   local delta=10
   if s<0 then 
      out=out..'-'; s=-s
   end
   out=out..tostring(floor(s/unity)) .. '.'
   s=10*(s%unity)+5
   repeat
      if delta>unity then s=s+32768-50000 end
      out=out .. tostring(floor(s/unity)) 
      s=10*(s%unity)
      delta=delta*10
   until s<=delta
   return out
end

local function print_glue(d,order)
   local out=print_scaled(d)
   if order>0 then
      out=out..'fi'
      while order>1 do
	 out=out..'l'; order=order-1
      end
   else 
      out=out..'pt'
   end
   return out
end

local function print_spec(p)
   local out=print_scaled(p.width)..'pt'
   if p.stretch~=0 then
      out=out..' plus '..print_glue(p.stretch,p.stretch_order)
   end
   if p.shrink~=0 then
      out=out..' minus '..print_glue(p.shrink,p.shrink_order)
   end
return out
end


------------------------------------------------------------------------
-- CODE FOR GETTING/SETTING PARAMETERS 
------------------------------------------------------------------------

-- EXT: print parameters that don't need arguments
do
   luatexja.unary_pars = {
      yalbaselineshift = function(t) 
	 return print_scaled(tex.getattribute('ltj@yablshift'))..'pt'
      end,
      yjabaselineshift = function(t) 
	 return print_scaled(tex.getattribute('ltj@ykblshift'))..'pt'
      end,
      kanjiskip = function(t) 
	 return print_spec(ltjs.get_stack_skip(stack_table_index.KSK, t))
      end,
      xkanjiskip = function(t) 
	 return print_spec(ltjs.get_stack_skip(stack_table_index.XSK, t))
      end,
      jcharwidowpenalty = function(t)
	 return ltjs.get_stack_table(stack_table_index.JWP, 0, t)
      end,
      autospacing = function(t)
	 return tex.getattribute('ltj@autospc')
      end,
      autoxspacing = function(t)
	 return tex.getattribute('ltj@autoxspc')
      end,
      differentjfm = function(t)
	 local f, r = luatexja.jfmglue.diffmet_rule, '???'
	 if f == math.max then r = 'large'
	 elseif f == math.min then r = 'small'
	 elseif f == math.two_average then r = 'average'
	 elseif f == math.two_paverage then r = 'paverage'
	 elseif f == math.two_pleft then r = 'pleft'
	 elseif f == math.two_pright then r = 'pright'
	 elseif f == math.two_add then r = 'both'
	 end
	 return r
      end
   }

   local unary_pars = luatexja.unary_pars
   function luatexja.ext_get_parameter_unary(k)
      if unary_pars[k] then
	 tex.write(tostring(unary_pars[k](tex.getcount('ltj@@stack'))))
      end
   end
end


-- EXT: print parameters that need arguments
do
   luatexja.binary_pars = {
      jacharrange = function(c, t)
	 if type(c)~='number' or c<0 or c>31*ltjc.ATTR_RANGE then
	    -- 0 はエラーにしない(隠し)
	    ltjb.package_error('luatexja',
			       'invalid character range number (' .. tostring(c) .. ')',
			       'A character range number should be in the range 1..'
				  .. 31*ltjc.ATTR_RANGE .. ",\n"..
				  'So I changed this one to ' .. 31*ltjc.ATTR_RANGE .. ".")
	    c=0 -- external range 217 == internal range 0
	 elseif c==31*ltjc.ATTR_RANGE then c=0
	 end
      -- 負の値は <U+0080 の文字の文字範囲,として出てくる.この時はいつも欧文文字なので 1 を返す
	 return (c<0) and 1 or ltjc.get_range_setting(c)
      end,
      prebreakpenalty = function(c, t)
	 return ltjs.get_stack_table(stack_table_index.PRE 
					  + ltjb.in_unicode(c, true), 0, t)
      end,
      postbreakpenalty = function(c, t)
	 return ltjs.get_stack_table(stack_table_index.POST 
					  + ltjb.in_unicode(c, true), 0, t)
      end,
      kcatcode = function(c, t)
	 return ltjs.get_stack_table(stack_table_index.KCAT 
					  + ltjb.in_unicode(c, false), 0, t)
      end,
      chartorange = function(c, t)
	 return ltjc.char_to_range(ltjb.in_unicode(c, false))
      end,
      jaxspmode = function(c, t)
	 return ltjs.get_stack_table(stack_table_index.XSP
					  + ltjb.in_unicode(c, true), 3, t)
      end,
   }
   local binary_pars = luatexja.binary_pars 

   binary_pars.alxspmode = binary_pars.jaxspmode
   function luatexja.ext_get_parameter_binary(k,c)
      if binary_pars[k] then
	 tex.write(tostring(binary_pars[k](c,tex.getcount('ltj@@stack'))))
      end
   end
end

-- EXT: print \global if necessary
function luatexja.ext_print_global()
   if luatexja.isglobal=='global' then tex.sprint(cat_lp, '\\global') end
end

-- main process
do
   local Dnode = node.direct or node
   local nullfunc = function (n) return n end
   local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
   local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
   -- mode = true iff main_process is called from pre_linebreak_filter
   local function main_process(head, mode, dir)
      tex.setattribute('global', attr_icflag, 0)
      local p = to_direct(head)
      p = ltjj.main(p,mode)
      if p then p = ltjw.set_ja_width(p, dir) end
      return to_node(p)
   end

   local function adjust_icflag(h)
      -- kern from luaotfload will have icflag = 1
      -- (same as italic correction)
      tex.setattribute('global', attr_icflag, 1)
      return h
   end

   -- callbacks
   
   luatexbase.add_to_callback(
      'pre_linebreak_filter', 
      function (head,groupcode)
	 return main_process(head, true, tex.textdir)
      end,'ltj.pre_linebreak_filter',
      luatexbase.priority_in_callback('pre_linebreak_filter',
				      'luaotfload.node_processor') + 1)
   luatexbase.add_to_callback(
      'hpack_filter', 
      function (head,groupcode,size,packtype, dir)
	 return main_process(head, false, dir)
      end,'ltj.hpack_filter',
      luatexbase.priority_in_callback('hpack_filter',
				      'luaotfload.node_processor') + 1)
   luatexbase.add_to_callback('pre_linebreak_filter', adjust_icflag, 'adjust_icflag', 1)
   luatexbase.add_to_callback('hpack_filter', adjust_icflag, 'adjust_icflag', 1)

end

-- define_font
do
   local otfl_fdr = fonts.definers.read
   local ltjr_font_callback = ltjr.font_callback
   function luatexja.font_callback(name, size, id)
      return ltjf.font_callback(
	 name, size, id, 
	 function (name, size, id) return ltjr_font_callback(name, size, id, otfl_fdr) end
      )
   end
   luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
end




-- debug

do

local node_type = node.type
local node_next = node.next
local has_attr = node.has_attribute

local id_penalty = node.id('penalty')
local id_glyph = node.id('glyph')
local id_glue_spec = node.id('glue_spec')
local id_glue = node.id('glue')
local id_kern = node.id('kern')
local id_hlist = node.id('hlist')
local id_vlist = node.id('vlist')
local id_rule = node.id('rule')
local id_math = node.id('math')
local id_whatsit = node.id('whatsit')
local sid_user = node.subtype('user_defined')

local function get_attr_icflag(p)
   return (has_attr(p, attr_icflag) or 0) % icflag_table.PROCESSED_BEGIN_FLAG
end

local debug_depth

local function debug_show_node_X(p,print_fn)
   local k = debug_depth
   local s
   local pt=node_type(p.id)
   local base = debug_depth .. string.format('%X', get_attr_icflag(p))
   .. ' ' .. pt .. ' ' .. tostring(p.subtype) .. ' '
   if pt == 'glyph' then
      s = base .. ' ' .. utf.char(p.char) .. ' '  .. tostring(p.font)
         .. ' (' .. print_scaled(p.height) .. '+' 
         .. print_scaled(p.depth) .. ')x' .. print_scaled(p.width)
      print_fn(s)
   elseif pt=='hlist' or pt=='vlist' then
      s = base .. '(' .. print_scaled(p.height) .. '+' 
         .. print_scaled(p.depth) .. ')x' .. print_scaled(p.width) .. p.dir
      if p.shift~=0 then
         s = s .. ', shifted ' .. print_scaled(p.shift)
      end
      if p.glue_sign >= 1 then 
         s = s .. ' glue set '
         if p.glue_sign == 2 then s = s .. '-' end
         s = s .. tostring(floor(p.glue_set*10000)/10000)
         if p.glue_order == 0 then 
            s = s .. 'pt' 
         else 
            s = s .. 'fi'
            for i = 2,  p.glue_order do s = s .. 'l' end
         end
      end
      if get_attr_icflag(p) == icflag_table.PACKED then
         s = s .. ' (packed)'
      end
      print_fn(s); debug_depth=debug_depth.. '.'
      for q in node.traverse(p.head) do
         debug_show_node_X(q, print_fn)
      end
      debug_depth=k
   elseif pt == 'glue' then
      s = base .. ' ' ..  print_spec(p.spec)
      if get_attr_icflag(p)>icflag_table.KINSOKU 
         and get_attr_icflag(p)<icflag_table.KANJI_SKIP then
         s = s .. ' (from JFM: priority ' .. get_attr_icflag(p)-icflag_table.FROM_JFM .. ')'
      elseif get_attr_icflag(p)==icflag_table.KANJI_SKIP then
	 s = s .. ' (kanjiskip)'
      elseif get_attr_icflag(p)==icflag_table.KANJI_SKIP_JFM then
	 s = s .. ' (kanjiskip, JFM specified)'
      elseif get_attr_icflag(p)==icflag_table.XKANJI_SKIP then
	 s = s .. ' (xkanjiskip)'
      elseif get_attr_icflag(p)==icflag_table.XKANJI_SKIP_JFM then
	 s = s .. ' (xkanjiskip, JFM specified)'
      end
      print_fn(s)
   elseif pt == 'kern' then
      s = base .. ' ' .. print_scaled(p.kern) .. 'pt'
      if p.subtype==2 then
	 s = s .. ' (for accent)'
      elseif get_attr_icflag(p)==icflag_table.IC_PROCESSED then
	 s = s .. ' (italic correction)'
         -- elseif get_attr_icflag(p)==ITALIC then
         --    s = s .. ' (italic correction)'
      elseif get_attr_icflag(p)>icflag_table.KINSOKU 
         and get_attr_icflag(p)<icflag_table.KANJI_SKIP then
	 s = s .. ' (from JFM: priority ' .. get_attr_icflag(p)-icflag_table.FROM_JFM .. ')'
      end
      print_fn(s)
   elseif pt == 'penalty' then
      s = base .. ' ' .. tostring(p.penalty)
      if get_attr_icflag(p)==icflag_table.KINSOKU then
	 s = s .. ' (for kinsoku)'
      end
      print_fn(s)
   elseif pt == 'whatsit' then
      s = base .. ' subtype: ' ..  tostring(p.subtype)
      if p.subtype==sid_user then
         if p.type ~= 110 then 
            s = s .. ' user_id: ' .. p.user_id .. ' ' .. p.value
            print_fn(s)
         else
            s = s .. ' user_id: ' .. p.user_id .. ' (node list)'
            print_fn(s)
            local q = p.value
            debug_depth=debug_depth.. '.'
            while q do 
               debug_show_node_X(q, print_fn); q = node_next(q)
            end
            debug_depth=k
         end
      else
         s = s .. node.subtype(p.subtype); print_fn(s)
      end
   -------- math node --------
   elseif pt=='noad' then
      s = base ; print_fn(s)
      if p.nucleus then
         debug_depth = k .. 'N'; debug_show_node_X(p.nucleus, print_fn); 
      end
      if p.sup then
         debug_depth = k .. '^'; debug_show_node_X(p.sup, print_fn); 
      end
      if p.sub then
         debug_depth = k .. '_'; debug_show_node_X(p.sub, print_fn); 
      end
      debug_depth = k;
   elseif pt=='math_char' then
      s = base .. ' fam: ' .. p.fam .. ' , char = ' .. utf.char(p.char)
      print_fn(s)
   elseif pt=='sub_box' or pt=='sub_mlist' then
      print_fn(base)
      if p.head then
         debug_depth = k .. '.'; 
	 for q in node.traverse(p.head) do
	    debug_show_node_X(q, print_fn)
	 end
      end
   else
      print_fn(base)
   end
   p=node_next(p)
end
function luatexja.ext_show_node_list(head,depth,print_fn)
   debug_depth = depth
   if head then
      while head do
         debug_show_node_X(head, print_fn); head = node_next(head)
      end
   else
      print_fn(debug_depth .. ' (null list)')
   end
end
function luatexja.ext_show_node(head,depth,print_fn)
   debug_depth = depth
   if head then
      debug_show_node_X(head, print_fn)
   else
      print_fn(debug_depth .. ' (null list)')
   end
end

end