4 luatexbase.provides_module({
5 name = 'luatexja.ruby',
7 description = 'Ruby annotation',
9 module('luatexja.ruby', package.seeall)
10 local err, warn, info, log = luatexbase.errwarinf(_NAME)
12 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 local Dnode = node.direct or node
16 local nullfunc = function(n) return n end
17 local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
18 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
20 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
21 local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
22 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
23 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
24 local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
25 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
26 local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
28 local node_new = Dnode.new
29 local node_remove = luatexja.Dnode_remove -- Dnode.remove
30 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
31 local node_copy, node_free, node_tail = Dnode.copy, Dnode.free, Dnode.tail
32 local has_attr, set_attr = Dnode.has_attribute, Dnode.set_attribute
33 local insert_before, insert_after = Dnode.insert_before, Dnode.insert_after
35 local id_hlist = node.id('hlist')
36 local id_vlist = node.id('vlist')
37 local id_rule = node.id('rule')
38 local id_whatsit = node.id('whatsit')
39 local id_glue = node.id('glue')
40 local id_kern = node.id('kern')
41 local id_penalty = node.id('penalty')
42 local id_glue_spec = node.id('glue_spec')
43 local sid_user = node.subtype('user_defined')
44 local ltjs_get_stack_table = luatexja.stack.get_stack_table
45 local id_pbox_w = 258 -- cluster which consists of a whatsit
47 local attr_icflag = luatexbase.attributes['ltj@icflag']
48 -- ルビ処理用の attribute は他のやつの流用なので注意!
50 local attr_ruby_maxprep = luatexbase.attributes['ltj@charclass']
51 local attr_ruby_maxpostp = luatexbase.attributes['ltj@kcat0']
52 local attr_ruby_maxmargin = luatexbase.attributes['ltj@kcat1']
53 local attr_ruby_stretch = luatexbase.attributes['ltj@kcat2']
54 local attr_ruby_mode = luatexbase.attributes['ltj@kcat3']
55 local attr_ruby_id = luatexbase.attributes['ltj@kcat4'] -- uniq id
56 local attr_ruby_intergap = luatexbase.attributes['ltj@kcat5']
57 local attr_ruby = luatexbase.attributes['ltj@rubyattr']
58 -- ルビ内部処理用,以下のようにノードによって使われ方が異なる
59 -- * (whatsit) では JAglue 処理時に,
60 -- 「2つ前のクラスタもルビ」 ==> そのルビクラスタの id
61 -- otherwise ==> unset
62 -- * (whatsit).value node ではルビ全角の値(sp単位)
63 -- * 行分割で whatsit の前後に並ぶノードでは,「何番目のルビ関連ノード」か
64 -- * (whatsit).value に続く整形済み vbox たちでは post_intrusion の値
65 local cat_lp = luatexbase.catcodetables['latex-package']
67 local round, floor = tex.round, math.floor
68 local min, max = math.min, math.max
70 luatexja.userid_table.RUBY_PRE = luatexbase.newuserwhatsitid('ruby_pre', 'luatexja')
71 luatexja.userid_table.RUBY_POST = luatexbase.newuserwhatsitid('ruby_post', 'luatexja')
72 local RUBY_PRE = luatexja.userid_table.RUBY_PRE
73 local RUBY_POST = luatexja.userid_table.RUBY_POST
75 ----------------------------------------------------------------
77 ----------------------------------------------------------------
79 function cpbox() return node_copy(Dnode.getbox(0)) end
81 function cpbox() return node.copy(tex.box[0]) end
85 ----------------------------------------------------------------
87 ----------------------------------------------------------------
89 local function gauss(coef)
90 -- #coef 式,#coef 変数の連立1次方程式系を掃きだし法で解く.
96 coef[i], coef[j] = coef[j], coef[i]; break
101 local d = coef[i][i];
104 for k = 1, deg+1 do coef[j][k] = coef[j][k] - e*coef[i][k]/d end
106 for k = 1, deg+1 do coef[i][k] = coef[i][k]/d end
112 local function solve_1(coef)
113 local a, b, c = coef[1][4], coef[2][4], coef[3][4]
114 coef[1][4], coef[2][4], coef[3][4] = c-b, a+b-c, c-a
118 local function solve_2(coef)
119 local a, b, c, d, e = coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
120 coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
121 = e-c, a+c-e, e-a-d, b+d-e, e-b
126 -- 実行回数 + ルビ中身 から uniq_id を作る関数
127 old_break_info = {} -- public, 前 run 時の分割情報
131 make_uniq_id = function (w)
132 exec_count = exec_count + 1
137 -- concatenation of boxes: reusing nodes
138 -- ルビ組版が行われている段落/hboxでの設定が使われる.
139 -- ルビ文字を格納しているボックスでの設定ではない!
140 local function concat(f, b)
144 setfield(node_tail(h), 'next', getlist(b))
145 setfield(f, 'head', nil); node_free(f)
146 setfield(b, 'head', nil); node_free(b)
147 return Dnode.hpack(luatexja.jfmglue.main(h,false))
154 local h = node_new(id_hlist)
155 setfield(h, 'subtype', 0)
156 setfield(h, 'width', 0)
157 setfield(h, 'height', 0)
158 setfield(h, 'depth', 0)
159 setfield(h, 'glue_set', 0)
160 setfield(h, 'glue_order', 0)
161 setfield(h, 'head', nil)
166 local function expand_3bits(num)
167 local t = {}; local a = num
169 t[i] = a%8; a = floor(a/8)
173 ----------------------------------------------------------------
175 ----------------------------------------------------------------
177 -- box の中身のノードは再利用される
180 local FROM_JFM = luatexja.icflag_table.FROM_JFM
181 local PROCESSED = luatexja.icflag_table.PROCESSED
182 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
183 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
184 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
185 local XKANJI_SKIP_JFM= luatexja.icflag_table.XKANJI_SKIP_JFM
186 enlarge = function (box, new_width, pre, middle, post, prenw, postnw)
187 -- pre, middle, post: 伸縮比率
188 -- prenw, postnw: 前後の自然長 (sp)
189 local h = getlist(box);
190 local hh, hd = getfield(box, 'height'), getfield(box, 'depth')
193 local hic = has_attr(hx, attr_icflag)
194 if (hic == KANJI_SKIP) or (hic == KANJI_SKIP_JFM)
195 or (hic == XKANJI_SKIP) or (hic == XKANJI_SKIP_JFM)
196 or ((hic<=FROM_JFM+2) and (hic>=FROM_JFM-2)) then
198 if getid(hx) == id_kern then
199 local k = node_new(id_glue)
200 local ks = node_new(id_glue_spec)
201 setfield(ks, 'width', getfield(hx, 'kern'))
202 setfield(ks, 'stretch_order', 2)
203 setfield(ks, 'stretch', round(middle*65536))
204 setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
205 setfield(k, 'subtype', 0); setfield(k, 'spec', ks)
206 h = insert_after(h, hx, k);
207 h = node_remove(h, hx); node_free(hx); hx = k
209 local old_spec = getfield(hx, 'spec')
210 local ks = node_copy(old_spec)
211 setfield(ks, 'stretch_order', 2)
212 setfield(ks, 'stretch', round(middle*65536))
213 setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
214 setfield(hx, 'spec', ks)
215 -- decrease old_spec's reference count
216 local b = node_new(id_glue)
217 setfield(b, 'spec', old_spec); node_free(b)
223 local k = node_new(id_glue);
224 local ks = node_new(id_glue_spec)
225 setfield(ks, 'width', prenw)
226 setfield(ks, 'stretch_order', 2); setfield(ks, 'stretch', round(pre*65536))
227 setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
228 setfield(k, 'subtype', 0); setfield(k, 'spec', ks)
229 h = insert_before(h, h, k);
231 local k = node_new(id_glue);
232 local ks = node_new(id_glue_spec);
233 setfield(ks, 'width', postnw)
234 setfield(ks, 'stretch_order', 2); setfield(ks, 'stretch', round(post*65536))
235 setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
236 setfield(k, 'subtype', 0);setfield(k, 'spec', ks)
237 insert_after(h, node_tail(h), k);
239 setfield(box, 'head', nil); node_free(box)
240 box = Dnode.hpack(h, new_width, 'exactly')
241 setfield(box, 'height', hh)
242 setfield(box, 'depth', hd)
248 ----------------------------------------------------------------
250 ----------------------------------------------------------------
252 -- rtlr: ルビ部分のボックスたち r1, r2, ...
253 -- rtlp: 親文字 のボックスたち p1, p2, ...
254 local function texiface_low(rst, rtlr, rtlp)
255 local w = node_new(id_whatsit, sid_user)
256 setfield(w, 'type', 110); setfield(w, 'user_id', RUBY_PRE)
257 local wv = node_new(id_whatsit, sid_user)
258 setfield(w, 'value', to_node(wv))
259 setfield(wv, 'type', 100)
260 setfield(wv, 'value', floor(#rtlr))
261 set_attr(wv, attr_ruby, rst.rubyzw)
262 set_attr(wv, attr_ruby_maxmargin, rst.maxmargin)
263 set_attr(wv, attr_ruby_maxprep, rst.pre)
264 set_attr(wv, attr_ruby_maxpostp, rst.post)
265 set_attr(wv, attr_ruby_intergap, rst.intergap)
266 set_attr(wv, attr_ruby_stretch, rst.stretch)
267 set_attr(wv, attr_ruby_mode, rst.mode)
270 _, n = insert_after(wv, n, rtlr[i])
271 _, n = insert_after(wv, n, rtlp[i])
273 -- w.value: (whatsit) .. r1 .. p1 .. r2 .. p2
274 Dnode.write(w); return w,wv
278 function texiface(rst, rtlr, rtlp)
279 if #rtlr ~= #rtlp then
280 for i=1, #rtlr do node_free(rtlr[i]) end
281 for i=1, #rtlp do node_free(rtlp[i]) end
282 luatexja.base.package_error('luatexja-ruby',
283 'Group count mismatch between the ruby and\n' ..
284 'the body (' .. #rtlr .. ' != ' .. #rtlp .. ').',
289 if getfield(rtlr[i], 'width') > getfield(rtlp[i], 'width') then
293 if f then -- モノルビ * n
294 local r,p = {true}, {true}
296 r[1] = rtlr[i]; p[1] = rtlp[i]; texiface_low(rst, r, p)
299 local w, wv = texiface_low(rst, rtlr, rtlp)
300 local id = make_uniq_id(w)
301 set_attr(wv, attr_ruby_id, id)
306 ----------------------------------------------------------------
308 ----------------------------------------------------------------
310 -- r, p の中身のノードは再利用される
311 local function enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
312 -- r: ルビ部分の格納された box,p: 同,親文字
313 local rwidth = getfield(r, 'width')
314 local sumprot = rwidth - getfield(p, 'width') -- >0
315 local pre_intrusion, post_intrusion
316 if intmode == 0 then -- とりあえず組んでから決める
317 p = enlarge(p, rwidth, ppre, pmid, ppost, 0, 0)
318 pre_intrusion = min(mapre, round(ppre*getfield(p, 'glue_set')*65536))
319 post_intrusion = min(mapost, round(ppost*getfield(p, 'glue_set')*65536))
320 elseif intmode == 1 then
321 pre_intrusion = min(mapre, sumprot);
322 post_intrusion = min(mapost, max(sumprot-pre_intrusion, 0))
323 p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
324 elseif intmode == 2 then
325 post_intrusion = min(mapost, sumprot);
326 pre_intrusion = min(mapre, max(sumprot-post_intrusion, 0))
327 p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
329 local n = min(mapre, mapost)*2
331 pre_intrusion = n/2; post_intrusion = n/2
333 pre_intrusion = floor(sumprot/2); post_intrusion = sumprot - pre_intrusion
335 p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
336 pre_intrusion = min(mapre, pre_intrusion + round(ppre*getfield(p, 'glue_set')*65536))
337 post_intrusion = min(mapost, post_intrusion + round(ppost*getfield(p, 'glue_set')*65536))
339 setfield(r, 'shift', -pre_intrusion)
340 local rwidth = rwidth - pre_intrusion - post_intrusion
341 setfield(r, 'width', rwidth)
342 setfield(p, 'width', rwidth)
343 local ps = getfield(getlist(p), 'spec')
344 setfield(ps, 'width', getfield(ps, 'width') - pre_intrusion)
345 return r, p, post_intrusion
349 -- returned value: <new box>, <ruby width>, <post_intrusion>
351 local function new_ruby_box(r, p, ppre, pmid, ppost,
352 mapre, mapost, imode, rgap)
353 local post_intrusion = 0
354 local intmode = imode%4
355 local rpre, rmid, rpost, rsmash
356 imode = floor(imode/262144); rsmash = (imode%2 ==1)
357 imode = floor(imode/2); rpost = imode%8;
358 imode = (imode-rpost)/8; rmid = imode%8;
359 imode = (imode-rmid)/8; rpre = imode%8
360 if getfield(r, 'width') > getfield(p, 'width') then -- change the width of p
361 r, p, post_intrusion = enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
362 elseif getfield(r, 'width') < getfield(p, 'width') then -- change the width of r
363 r = enlarge(r, getfield(p, 'width'), rpre, rmid, rpost, 0, 0)
365 local need_repack = false
366 -- margin が大きくなりすぎた時の処理
367 if round(rpre*getfield(r, 'glue_set')*65536) > max_margin then
368 local ps = getfield(getlist(r), 'spec'); need_repack = true
369 setfield(ps, 'width', max_margin)
370 setfield(ps, 'stretch', 1) -- 全く伸縮しないのも困る
372 if round(rpost*getfield(r, 'glue_set')*65536) > max_margin then
373 local ps = getfield(node_tail(getlist(r)), 'spec'); need_repack = true
374 setfield(ps, 'width', max_margin)
375 setfield(ps, 'stretch', 1) -- 全く伸縮しないのも困る
379 r = Dnode.hpack(getlist(r), getfield(r, 'width'), 'exactly')
380 setfield(rt, 'head', nil); node_free(rt);
383 local a, k = node_new(id_rule), node_new(id_kern)
384 setfield(a, 'width', 0); setfield(a, 'height', 0)
385 setfield(a, 'depth', 0); setfield(k, 'kern', rgap)
386 insert_after(r, r, a); insert_after(r, a, k);
387 insert_after(r, k, p); setfield(p, 'next', nil)
388 a = Dnode.vpack(r); setfield(a, 'shift', 0)
389 set_attr(a, attr_ruby, post_intrusion)
390 if rsmash or getfield(a, 'height')<getfield(p, 'height') then
391 local k = node_new(id_kern)
392 setfield(k, 'kern', -getfield(a, 'height')+getfield(p, 'height'))
393 setfield(a, 'head', k); insert_before(r, r, k)
394 setfield(a, 'height', getfield(p, 'height'))
397 return a, getfield(r, 'width'), post_intrusion
401 -- High-level routine in pre_linebreak_filter
402 local post_intrusion_backup
403 local max_allow_pre, max_allow_post
406 -- 中付き熟語ルビ,cmp containers
407 -- 「文字の構成を考えた」やつはどうしよう
408 local function pre_low_cal_box(w, cmp)
412 -- kf[i] : container 1--i からなる行末形
413 -- kf[cmp+i] : container i--cmp からなる行頭形
415 local wv = getfield(w, 'value')
416 local mdt -- nt*: node temp
417 local coef = {} -- 連立一次方程式の拡大係数行列
418 local rtb = expand_3bits(has_attr(wv, attr_ruby_stretch))
419 local rgap = has_attr(wv, attr_ruby_intergap)
420 local intmode = floor(has_attr(wv, attr_ruby_mode)/4)
422 -- node list 展開・行末形の計算
423 local nt, nta, ntb = wv, nil, nil -- nt*: node temp
425 nt = node_next(nt); rb[i] = nt; nta = concat(nta, node_copy(nt))
426 nt = node_next(nt); pb[i] = nt; ntb = concat(ntb, node_copy(nt))
428 for j = 1, 2*i do coef[i][j] = 1 end
429 for j = 2*i+1, 2*cmp+1 do coef[i][j] = 0 end
430 kf[i], coef[i][2*cmp+2]
431 = new_ruby_box(node_copy(nta), node_copy(ntb),
432 rtb[6], rtb[5], rtb[4], max_allow_pre, 0, intmode, rgap)
434 node_free(nta); node_free(ntb)
437 local nta, ntb = nil, nil
440 for j = 1, 2*i-1 do coef[cmp+i][j] = 0 end
441 for j = 2*i, 2*cmp+1 do coef[cmp+i][j] = 1 end
442 nta = concat(node_copy(rb[i]), nta); ntb = concat(node_copy(pb[i]), ntb)
443 kf[cmp+i], coef[cmp+i][2*cmp+2]
444 = new_ruby_box(node_copy(nta), node_copy(ntb),
445 rtb[9], rtb[8], rtb[7], 0, max_allow_post, intmode, rgap)
448 -- ここで,nta, ntb には全 container を連結した box が入っているので
451 for j = 1, 2*cmp+1 do coef[2*cmp+1][j] = 1 end
452 kf[2*cmp+1], coef[2*cmp+1][2*cmp+2], post_intrusion_backup
453 = new_ruby_box(nta, ntb, rtb[3], rtb[2], rtb[1],
454 max_allow_pre, max_allow_post, intmode, rgap)
456 -- w.value の node list 更新.
458 Dnode.flush_list(node_next(wv))
459 for i = 1, 2*cmp+1 do setfield(nt, 'next', kf[i]); nt = kf[i] end
461 if cmp==1 then solve_1(coef)
462 elseif cmp==2 then solve_2(coef)
464 gauss(coef) -- 掃きだし法で連立方程式形 coef を解く
471 local traverse_id = Dnode.traverse_id
472 function first_whatsit(n) -- n 以後で最初の whatsit
473 for h in traverse_id(id_whatsit, n) do
481 local function pre_low_app_node(head, w, cmp, coef, ht, dp)
483 local nt, ntb = node_new(id_glue), node_new(id_glue_spec)
484 setfield(ntb, 'width', coef[1][2*cmp+2])
485 setfield(ntb, 'stretch_order', 0); setfield(ntb, 'stretch', 0)
486 setfield(ntb, 'shrink_order', 0); setfield(ntb, 'shrink', 0)
487 setfield(nt, 'subtype', 0); setfield(nt, 'spec', ntb)
488 set_attr(nt, attr_ruby, 1); set_attr(w, attr_ruby, 2)
489 head = insert_before(head, w, nt)
493 local nta = node_new(id_rule);
494 setfield(nta, 'width', coef[i*2][2*cmp+2])
495 setfield(nta, 'height', ht); setfield(nta, 'depth', dp)
496 setfield(nta, 'subtype', 0)
497 insert_after(head, nt, nta)
498 set_attr(nta, attr_ruby, 2*i+1)
500 nt = node_new(id_glue)
501 local ntb = node_new(id_glue_spec);
502 setfield(ntb, 'width', coef[i*2+1][2*cmp+2])
503 setfield(ntb, 'stretch_order', 0); setfield(ntb, 'stretch', 0)
504 setfield(ntb, 'shrink_order', 0); setfield(ntb, 'shrink', 0)
505 setfield(nt, 'subtype', 0); setfield(nt, 'spec', ntb)
506 set_attr(nt, attr_ruby, 2*i+2)
507 insert_after(head, nta, nt)
509 tex.setattribute('global', attr_ruby, -0x7FFFFFFF)
510 setfield(w, 'user_id', RUBY_POST)
511 return head, first_whatsit(node_next(nt))
514 local function pre_high(ahead)
515 if not ahead then return ahead end
516 local head = to_direct(ahead)
517 post_intrusion_backup = 0
518 local n = first_whatsit(head)
520 if getsubtype(n) == sid_user and getfield(n, 'user_id') == RUBY_PRE then
521 local nv = getfield(n, 'value')
522 max_allow_pre = has_attr(nv, attr_ruby_maxprep) or 0
523 local atr = has_attr(n, attr_ruby) or 0
524 if max_allow_pre < 0 then
526 -- 直前のルビで intrusion がおこる可能性あり.
527 -- 前 run のデータが残っていればそれを使用,
528 -- そうでなければ行中形のデータを利用する
529 local op = old_break_info[atr] or post_intrusion_backup
530 max_allow_pre = max(0, -max_allow_pre - op)
532 max_allow_pre = -max_allow_pre
535 post_intrusion_backup = 0
536 max_allow_post = has_attr(nv, attr_ruby_maxpostp) or 0
537 max_margin = has_attr(nv, attr_ruby_maxmargin) or 0
538 local coef = pre_low_cal_box(n, getfield(nv, 'value'))
539 local s = node_tail(nv) --ルビ文字
540 head, n = pre_low_app_node(
541 head, n, getfield(nv, 'value'), coef,
542 getfield(s, 'height'), getfield(s, 'depth')
545 n = first_whatsit(node_next(n))
550 luatexbase.add_to_callback('pre_linebreak_filter', pre_high, 'ltj.ruby.pre', 100)
551 luatexbase.add_to_callback('hpack_filter', pre_high, 'ltj.ruby.pre', 100)
553 ----------------------------------------------------------------
555 ----------------------------------------------------------------
558 local function write_aux(wv, num)
559 local id = has_attr(wv, attr_ruby_id)
562 '\\write\\@mainaux{\\string\\directlua{luatexja.ruby.old_break_info['
563 .. tostring(id) .. ']=' .. num
568 post_lown = function (rs, rw, cmp, ch)
569 -- ch: the head of `current' hlist
570 if #rs ==0 or not rw then return ch end
571 local hn = has_attr(rs[1], attr_ruby)
572 local fn = has_attr(rs[#rs], attr_ruby)
573 local wv = getfield(rw, 'value')
576 local hn = node_tail(wv)
578 insert_after(ch, rs[#rs], hn)
579 set_attr(hn, attr_icflag, PROCESSED)
580 write_aux(wv, has_attr(hn, attr_ruby))-- 行中形
582 local deg, hn = (fn-1)/2, wv
583 for i = 1, deg do hn = node_next(hn) end;
585 setfield(hn, 'next', nil)
586 insert_after(ch, rs[#rs], hn)
587 set_attr(hn, attr_icflag, PROCESSED)
588 write_aux(wv, has_attr(hn, attr_ruby))
591 local deg, hn = max((hn-1)/2,2), wv
592 for i = 1, cmp+deg-1 do hn = node_next(hn) end
593 -- -1 is needed except the case hn = 3,
594 -- because a ending-line form is removed already from the list
595 node_remove(wv, hn); setfield(hn, 'next', nil)
596 insert_after(ch, rs[#rs], hn)
597 set_attr(hn, attr_icflag, PROCESSED)
598 if fn == 2*cmp-1 then
599 write_aux(wv, has_attr(hn, attr_ruby))
604 ch = node_remove(ch, ri); node_free(ri);
607 if fn >= 2*cmp+1 then node_free(rw) end
612 local function post_high_break(head)
613 local rs = {} -- rs: sequence of ruby_nodes,
614 local rw = nil -- rw: main whatsit
615 local cmp = -2 -- dummy
616 for h in Dnode.traverse_id(id_hlist, to_direct(head)) do
617 for i = 1, #rs do rs[i] = nil end
618 local ha = getlist(h)
620 local hai = getid(ha)
621 local i = ((hai == id_glue and getsubtype(ha)==0)
622 or (hai == id_rule and getsubtype(ha)==0)
623 or (hai == id_whatsit and getsubtype(ha)==sid_user
624 and getfield(ha, 'user_id', RUBY_POST)))
625 and has_attr(ha, attr_ruby) or 0
629 setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
630 for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
631 rs[1], rw = ha, nil; ha = node_next(ha)
634 cmp = getfield(getfield(rw, 'value'), 'value')
635 local hb, hc = node_remove(getlist(h), rw)
636 setfield(h, 'head', hb); ha = hc
638 rs[#rs+1] = ha; ha = node_next(ha)
641 setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
646 local function post_high_hbox(ahead)
647 local ha = to_direct(ahead); local head = ha
648 local rs = {}; -- rs: sequence of ruby_nodes,
649 local rw = nil; -- rw: main whatsit
652 local hai = getid(ha)
653 local i = ((hai == id_glue and getsubtype(ha)==0)
654 or (hai == id_rule and getsubtype(ha)==0)
655 or (hai == id_whatsit and getsubtype(ha)==sid_user
656 and getfield(ha, 'user_id', RUBY_POST)))
657 and has_attr(ha, attr_ruby) or 0
661 head = post_lown(rs, rw, cmp, head)
662 for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
663 rs[1], rw = ha, nil; ha = node_next(ha)
666 cmp = getfield(getfield(rw, 'value'), 'value')
667 head, ha = node_remove(head, rw)
669 rs[#rs+1] = ha; ha = node_next(ha)
672 return to_node(post_lown(rs, rw, cmp, head))
675 luatexbase.add_to_callback('post_linebreak_filter', post_high_break, 'ltj.ruby.post_break', 100)
676 luatexbase.add_to_callback('hpack_filter', post_high_hbox, 'ltj.ruby.post_hbox', 101)
679 ----------------------------------------------------------------
680 -- for jfmglue callbacks
681 ----------------------------------------------------------------
683 local RIPRE = luatexja.stack_table_index.RIPRE
684 local function whatsit_callback(Np, lp, Nq, bsl)
685 if Np.nuc then return Np
686 elseif getfield(lp, 'user_id') == RUBY_PRE then
687 Np.first, Np.nuc, Np.last = lp, lp, lp
688 local lpv = getfield(lp, 'value')
689 local x = node_next(node_next(lpv))
690 Np.last_char = luatexja.jfmglue.check_box_high(Np, getlist(x), nil)
691 if Nq.id ~=id_pbox_w then
692 if type(Nq.char)=='number' then
694 if has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
695 local p = round((ltjs.table_current_stack[RIPRE + Nq.char] or 0)
696 *has_attr(lpv, attr_ruby))
697 if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
700 set_attr(lpv, attr_ruby_maxprep, -p)
703 set_attr(lp, attr_ruby, Nq.prev_ruby)
705 elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
706 if Nq.char == 'parbdd' then
707 local p = round((ltjs.table_current_stack[RIPRE-1] or 0)
708 *has_attr(lpv, attr_ruby))
710 if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
713 set_attr(lpv, attr_ruby_maxprep, p)
715 set_attr(lpv, attr_ruby_maxprep, 0)
718 elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
719 set_attr(lpv, attr_ruby_maxprep, 0)
724 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
725 "luatexja.ruby.np_info", 1)
729 local RIPOST = luatexja.stack_table_index.RIPOST
730 local function whatsit_after_callback(s, Nq, Np, bsl)
731 if not s and getfield(Nq.nuc, 'user_id') == RUBY_PRE then
732 local nqnv = getfield(Nq.nuc, 'value')
733 local x = node_next(node_next(nqnv))
734 for i = 2, getfield(nqnv, 'value') do x = node_next(node_next(x)) end
735 Nq.last_char = luatexja.jfmglue.check_box_high(Nq, getlist(x), nil)
736 luatexja.jfmglue.after_hlist(Nq)
737 if Np and Np.id ~=id_pbox_w and type(Np.char)=='number' then
739 local rm = has_attr(nqnv, attr_ruby_mode)
740 if has_attr(nqnv, attr_ruby_maxpostp) < 0 then -- auto
741 local p = round((ltjs.table_current_stack[RIPOST + Np.char] or 0)
742 *has_attr(nqnv, attr_ruby))
743 if rm%2 == 0 then -- intrusion 無効
747 local q = has_attr(nqnv, attr_ruby_maxprep)
750 set_attr(nqnv, attr_ruby_maxprep, p)
753 set_attr(nqnv, attr_ruby_maxpostp, p)
755 Np.prev_ruby = has_attr(getfield(Nq.nuc, 'value'), attr_ruby_id)
756 -- 前のクラスタがルビであったことのフラグ
758 local nqnv = getfield(Nq.nuc, 'value')
759 if has_attr(nqnv, attr_ruby_maxpostp) < 0 then -- auto
760 set_attr(nqnv, attr_ruby_maxpostp, 0)
761 if has_attr(nqnv, attr_ruby_mode)%4 >= 2 then
762 set_attr(nqnv, attr_ruby_maxprep, 0)
771 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
772 "luatexja.ruby.np_info_after", 1)