2 -- luatexja/jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
8 description = 'Insertion process of JFM glues and kanjiskip',
10 module('luatexja.jfmglue', package.seeall)
11 local err, warn, info, log = luatexbase.errwarinf(_NAME)
13 luatexja.load_module('base'); local ltjb = luatexja.base
14 luatexja.load_module('stack'); local ltjs = luatexja.stack
15 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
16 luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
18 local node_type = node.type
19 local node_new = node.new
20 local node_remove = node.remove
21 local node_prev = node.prev
22 local node_next = node.next
23 local node_copy = node.copy
24 local node_tail = node.tail
25 local node_free = node.free
26 local has_attr = node.has_attribute
27 local set_attr = node.set_attribute
28 local node_insert_before = node.insert_before
29 local node_insert_after = node.insert_after
30 local round = tex.round
31 local uniq_id = 0 -- unique id
33 local id_glyph = node.id('glyph')
34 local id_hlist = node.id('hlist')
35 local id_vlist = node.id('vlist')
36 local id_rule = node.id('rule')
37 local id_ins = node.id('ins')
38 local id_mark = node.id('mark')
39 local id_adjust = node.id('adjust')
40 local id_disc = node.id('disc')
41 local id_whatsit = node.id('whatsit')
42 local id_math = node.id('math')
43 local id_glue = node.id('glue')
44 local id_kern = node.id('kern')
45 local id_penalty = node.id('penalty')
47 local id_glue_spec = node.id('glue_spec')
48 local id_jglyph = node.id('glyph') + 256 -- Japanese character
49 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
50 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
51 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
52 local sid_user = node.subtype('user_defined')
54 local sid_start_link = node.subtype('pdf_start_link')
55 local sid_start_thread = node.subtype('pdf_start_thread')
56 local sid_end_link = node.subtype('pdf_end_link')
57 local sid_end_thread = node.subtype('pdf_end_thread')
67 local IC_PROCESSED = 9
73 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
74 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
75 local attr_icflag = luatexbase.attributes['ltj@icflag']
76 local attr_autospc = luatexbase.attributes['ltj@autospc']
77 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
78 local attr_uniqid = luatexbase.attributes['ltj@uniqid']
79 local max_dimen = 1073741823
81 local ltjs_get_penalty_table = ltjs.get_penalty_table
82 local ltjs_get_skip_table = ltjs.get_skip_table
83 local ltjf_find_char_class = ltjf.find_char_class
84 local ltjf_font_metric_table = ltjf.font_metric_table
85 local ltjf_metrics = ltjf.metrics
87 local par_indented -- is the paragraph indented?
89 -------------------- Helper functions
91 -- This function is called only for acquiring `special' characters.
92 local function fast_find_char_class(c,m)
93 return m.chars[c] or 0
96 local spec_zero_glue = node_new(id_glue_spec)
97 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
98 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
100 local function get_zero_spec()
101 return node_copy(spec_zero_glue)
104 local function skip_table_to_spec(n)
105 local g = node_new(id_glue_spec)
106 local st = ltjs_get_skip_table(n, box_stack_level)
107 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
108 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
113 local function add_penalty(p,e)
114 if p.penalty>=10000 then
115 if e<=-10000 then p.penalty = 0 end
116 elseif p.penalty<=-10000 then
117 if e>=10000 then p.penalty = 0 end
119 p.penalty = p.penalty + e
120 if p.penalty>=10000 then p.penalty = 10000
121 elseif p.penalty<=-10000 then p.penalty = -10000 end
127 diffmet_rule = math.two_average
128 function math.two_add(a,b) return a+b end
129 function math.two_average(a,b) return (a+b)*0.5 end
131 -------------------- idea
132 -- 2 node の間に glue/kern/penalty を挿入する.
133 -- 基本方針: char node q と char node p の間
136 -- first: 最初の node,nuc: p,last: 最後の node
139 -- 実際の glue は Np.last, Nq.first の間に挿入される
140 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
142 -- Np, Nq, Bp, widow_Bp について
144 -- 1回のループごとに Nq = Np, Np = (new table) となるのは効率が悪いので,
145 -- Np <-> Nq 入れ替え,その後 Np をクリアすることでテーブルを再利用.
146 -- 同様の関係は Bp, widow_Bp にも.
150 -- node x が non-char node のときは,x のみ
151 -- x が char_node のときは,
152 -- - x が \accent の第二引数だったとき
153 -- [kern2 kern y kern2] x の 3 node が核に加わる
154 -- - x の直後に \/ 由来 kern があったとき
155 -- その \/ 由来の kern が核に加わる
157 -- ins, mark, adjust, whatsit, penalty
159 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
160 -- +: kern from LINEEND はここに入る
161 -- *: jfm glue はここに入る
163 local head -- the head of current list
164 local last -- the last node of current list
165 local lp -- 外側での list 走査時のカーソル
168 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
170 local ihb_flag -- JFM グルー挿入抑止用 flag
171 -- on: \inhibitglue 指定時,hlist の周囲
173 -------------------- hlist 内の文字の検索
175 local first_char, last_char, find_first_char
177 local function check_box(box_ptr, box_end)
178 local p = box_ptr; local found_visible_node = false
180 find_first_char = false; first_char = nil; last_char = nil
183 while p and p~=box_end do
187 p = node_next(node_next(node_next(p))); pid = p.id
188 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
189 p = node_next(p); pid = p.id
192 if pid==id_glyph then
194 if find_first_char then
195 first_char = p; find_first_char = false
197 last_char = p; found_visible_node = true; p=node_next(p)
198 if (not p) or p==box_end then return found_visible_node end
202 if pid==id_hlist then
203 if has_attr(p, attr_icflag)==PACKED then
204 for q in node.traverse_id(id_glyph, p.head) do
205 if find_first_char then
206 first_char = q; find_first_char = false
208 last_char = q; found_visible_node = true; break
212 if check_box(p.head, nil) then found_visible_node = true end
213 else if find_first_char then
214 find_first_char = false
220 elseif not (pid==id_ins or pid==id_mark
221 or pid==id_adjust or pid==id_whatsit
222 or pid==id_penalty) then
223 found_visible_node = true
224 if find_first_char then
225 find_first_char = false
232 return found_visible_node
235 function check_box_high(Nx, box_ptr, box_end)
236 first_char = nil; last_char = nil; find_first_char = true
237 if check_box(box_ptr, box_end) then
239 if first_char.font == has_attr(first_char, attr_curjfnt) then
240 set_np_xspc_jachar(Nx, first_char)
242 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
249 -------------------- Np の計算と情報取得
251 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
252 function (Np, lp, Nq, box_stack_level)
253 if Np.nuc then return Np
255 return Np -- your code
258 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
259 function (stat, Nq, Np, box_stack_level) return false end)
262 local function set_attr_icflag_processed(p)
263 if (has_attr(p, attr_icflag) or 0)<= ITALIC then
264 set_attr(p, attr_uniqid, uniq_id)
265 set_attr(p, attr_icflag, PROCESSED)
269 local function check_next_ickern()
270 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
271 set_attr(lp, attr_icflag, IC_PROCESSED)
272 set_attr(lp, attr_uniqid, uniq_id)
273 Np.last = lp; lp = node_next(lp)
274 else Np.last = Np.nuc end
277 local function calc_np_pbox()
278 local uid = has_attr(lp, attr_uniqid)
279 Np.first = Np.first or lp; Np.id = id_pbox
280 lpa = KINSOKU -- dummy=
281 while lp~=last and lpa>=PACKED and lpa~=BOXBDD
282 and has_attr(lp, attr_uniqid) == uid do
283 Np.nuc = lp; set_attr(lp, attr_uniqid, uniq_id)
284 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
286 return check_next_ickern()
290 local calc_np_auxtable = {
291 [id_glyph] = function()
292 Np.first = Np.first or lp
293 if lp.font == has_attr(lp, attr_curjfnt) then
298 Np.nuc = lp; set_attr_icflag_processed(lp)
299 lp = node_next(lp); check_next_ickern(); return true
301 [id_hlist] = function()
302 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
303 set_attr_icflag_processed(lp)
309 lp = node_next(lp); return true
311 [id_vlist] = function()
312 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
313 Np.id = id_box_like; set_attr_icflag_processed(lp);
314 lp = node_next(lp); return true
316 [id_rule] = function()
317 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
318 Np.id = id_box_like; set_attr_icflag_processed(lp);
319 lp = node_next(lp); return true
321 [id_ins] = function()
322 set_attr_icflag_processed(lp); lp = node_next(lp)
325 [id_mark] = function()
326 set_attr_icflag_processed(lp); lp = node_next(lp)
329 [id_adjust] = function()
330 set_attr_icflag_processed(lp); lp = node_next(lp)
333 [id_disc] = function()
334 Np.first = Np.first or lp;
335 Np.nuc = lp; set_attr_icflag_processed(lp);
336 Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
338 [id_whatsit] = function()
339 if lp.subtype==sid_user then
340 if lp.user_id==30111 then
341 local lq = node_next(lp)
342 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
344 set_attr_icflag_processed(lp)
345 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
346 , Np, lp, Nq, box_stack_level)
349 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
353 -- we do special treatment for these whatsit nodes.
354 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
356 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
357 Nq.last = lp; Np.first = nil
359 set_attr_icflag_processed(lp); lp = node_next(lp)
363 [id_math] = function()
364 Np.first = Np.first or lp; Np.nuc = lp;
365 set_attr_icflag_processed(lp); lp = node_next(lp)
366 while lp.id~=id_math do
367 set_attr_icflag_processed(lp); lp = node_next(lp)
369 set_attr_icflag_processed(lp);
370 Np.last = lp; Np.id = id_math; lp = node_next(lp);
373 [id_glue] = function()
374 Np.first = Np.first or lp; Np.nuc = lp; set_attr_icflag_processed(lp);
375 Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
377 [id_kern] = function()
378 Np.first = Np.first or lp
379 if lp.subtype==2 then
380 set_attr_icflag_processed(lp); lp = node_next(lp)
381 set_attr_icflag_processed(lp); lp = node_next(lp)
382 set_attr_icflag_processed(lp); lp = node_next(lp)
383 set_attr_icflag_processed(lp); Np.nuc = lp
384 if lp.font == has_attr(lp, attr_curjfnt) then
389 lp = node_next(lp); check_next_ickern();
391 Np.id = id_kern; set_attr_icflag_processed(lp);
392 Np.last = lp; lp = node_next(lp)
396 [id_penalty] = function()
397 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
398 lp = node_next(lp); return false
401 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
402 Np.id = id_box_like; set_attr_icflag_processed(lp);
403 lp = node_next(lp); return true
407 local function calc_np()
408 -- We assume lp = node_next(Np.last)
410 for k in pairs(Nr) do Nr[k] = nil end; Nq = Np; Np = Nr
411 for k in pairs(Bp) do Bp[k] = nil end
414 local lpa = has_attr(lp, attr_icflag) or 0
416 if lpa == BOXBDD then
417 local lq = node_next(lp)
418 head = node_remove(head, lp); node_free(lp); lp = lq
419 else calc_np_pbox(); return
421 elseif calc_np_auxtable[lp.id]() then return end
429 -- extract informations from Np
430 -- We think that "Np is a Japanese character" if Np.met~=nil,
431 -- "Np is an alphabetic character" if Np.pre~=nil,
432 -- "Np is not a character" otherwise.
435 function set_np_xspc_jachar(Nx, x)
436 local z = ltjf_font_metric_table[x.font]
438 local cls = ltjf_find_char_class(c, z)
439 local m = ltjf_metrics[z.jfm]
440 set_attr(x, attr_jchar_class, cls)
446 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
447 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
448 z = fast_find_char_class('lineend', m)
449 local y = m.size_cache[Nx.size].char_type[Nx.class]
450 Nx.lend = y.kern[z] or 0
451 y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
452 Nx.xspc_before = (y%2==1)
453 Nx.xspc_after = (y>=2)
454 Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
455 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
459 local ligature_head = 1
460 local ligature_tail = 2
461 function set_np_xspc_alchar(Nx, c,x, lig)
463 if lig == ligature_head then
464 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
465 x = x.components; c = x.char
468 while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do
469 x = node_tail(x.components); c = x.char
472 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
473 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
476 Nx.pre = 0; Nx.post = 0; Nx.char = -1
479 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
480 Nx.xspc_before = (y%2==1)
481 Nx.xspc_after = (y>=2)
482 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
486 local function extract_np()
487 local x, i = Np.nuc, Np.id;
488 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
489 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
490 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
491 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
492 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
493 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
497 -- change the information for the next loop
498 -- (will be done if Nx is an alphabetic character or a hlist)
499 function after_hlist(Nx)
501 if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
502 set_np_xspc_jachar(Nx, Nx.last_char);
504 set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
507 Nx.pre = nil; Nx.met = nil
511 local function after_alchar(Nx)
513 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
517 -------------------- 最下層の処理
519 local function lineend_fix(g)
520 if g and g.id==id_kern then
522 elseif Nq.lend~=0 then
524 g = node_new(id_kern); g.subtype = 1; g.kern = -Nq.lend;
525 set_attr(g, attr_icflag, LINEEND)
526 set_attr(g, attr_uniqid, uniq_id)
527 elseif g.id==id_kern then
528 g.kern = g.kern - Nq.lend
530 g.spec.width = g.spec.width - Nq.lend
536 -- change penalties (or create a new penalty, if needed)
537 local function handle_penalty_normal(post, pre, g)
538 local a = (pre or 0) + (post or 0)
540 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
541 local p = node_new(id_penalty)
542 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
544 head = node_insert_before(head, Np.first, p)
546 set_attr(p, attr_icflag, KINSOKU)
547 set_attr(p, attr_uniqid, uniq_id)
549 else for i, v in pairs(Bp) do add_penalty(v,a) end
553 local function handle_penalty_always(post, pre, g)
554 local a = (pre or 0) + (post or 0)
556 if not (g and g.id==id_glue) or Nq.lend~=0 then
557 local p = node_new(id_penalty)
558 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
560 head = node_insert_before(head, Np.first, p)
562 set_attr(p, attr_icflag, KINSOKU)
563 set_attr(p, attr_uniqid, uniq_id)
565 else for i, v in pairs(Bp) do add_penalty(v,a) end
569 local function handle_penalty_suppress(post, pre, g)
570 local a = (pre or 0) + (post or 0)
572 if g and g.id==id_glue then
573 local p = node_new(id_penalty)
574 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
576 set_attr(p, attr_icflag, KINSOKU)
577 set_attr(p, attr_uniqid, uniq_id)
579 else for i, v in pairs(Bp) do add_penalty(v,a) end
583 -- 和文文字間の JFM glue を node 化
584 local function new_jfm_glue(Nn, bc, ac)
585 -- bc, ac: char classes
587 local z = Nn.met.size_cache[Nn.size].char_type[bc]
589 local h = node_new(id_glue_spec)
590 h.width = z.glue[ac][1]
591 h.stretch = z.glue[ac][2]
592 h.shrink = z.glue[ac][3]
593 h.stretch_order=0; h.shrink_order=0
594 g = node_new(id_glue); g.subtype = 0; g.spec = h
595 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
596 elseif z.kern[ac] then
597 g = node_new(id_kern)
598 g.subtype = 1; g.kern = z.kern[ac]
599 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
604 -- Nq.last (kern w) .... (glue/kern g) Np.first
605 local function real_insert(w, g)
607 local h = node_new(id_kern)
608 set_attr(h, attr_icflag, LINE_END)
609 set_attr(h, attr_uniqid, uniq_id)
610 h.kern = w; h.subtype = 1
611 head = node_insert_after(head, Nq.last, h)
614 head = node_insert_before(head, Np.first, g)
619 -------------------- 和文文字間空白量の決定
622 local function get_kanji_skip_from_jfm(Nn)
623 local i = Nn.met.size_cache[Nn.size].kanjiskip
624 print(Nn.met.size_cache[Nn.size])
626 return { i[1], i[2], i[3] }
630 local function get_kanjiskip()
631 local g = node_new(id_glue)
632 if Np.auto_kspc or Nq.auto_kspc then
633 if kanji_skip.width == max_dimen then
634 local gx = node_new(id_glue_spec);
635 gx.stretch_order = 0; gx.shrink_order = 0
636 local bk = get_kanji_skip_from_jfm(Nq)
637 if bk then print('bk: ', bk[1], bk[2], bk[3]) else print('bk: nil') end
639 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
642 ak = get_kanji_skip_from_jfm(Np)
643 if ak then print('ak: ', ak[1], ak[2], ak[3]) else print('ak: nil') end
647 gx.width = round(diffmet_rule(bk[1], ak[1]))
648 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
649 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
651 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
654 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
655 else node_free(gx); gx = get_zero_spec() -- fallback
658 else g.spec=node_copy(kanji_skip); node_free(gx) end
660 g.spec = get_zero_spec(); node_free(gx)
662 set_attr(g, attr_icflag, KANJI_SKIP)
663 set_attr(g, attr_uniqid, uniq_id)
667 local function calc_ja_ja_aux(gb,ga)
671 if not ga then return gb end
672 local k = node.type(gb.id) .. node.type(ga.id)
673 if k == 'glueglue' then
675 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
676 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
677 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
680 elseif k == 'kernkern' then
682 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
685 elseif k == 'kernglue' then
686 -- gb: kern, ga: glue
687 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
688 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
689 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
693 -- gb: glue, ga: kern
694 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
695 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
696 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
703 local function calc_ja_ja_glue()
704 if ihb_flag then return nil
705 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
706 return new_jfm_glue(Nq, Nq.class, Np.class)
708 local g = new_jfm_glue(Nq, Nq.class,
709 fast_find_char_class('diffmet',Nq.met))
710 local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
712 return calc_ja_ja_aux(g,h)
716 -------------------- 和欧文間空白量の決定
719 local function get_xkanji_skip_from_jfm(Nn)
720 local i = Nn.met.size_cache[Nn.size].xkanjiskip
722 return i and { i[1], i[2], i[3] }
726 local function get_xkanjiskip(Nn)
727 local g = node_new(id_glue)
728 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
729 if xkanji_skip.width == max_dimen then
730 local gx = node_new(id_glue_spec);
731 gx.stretch_order = 0; gx.shrink_order = 0
732 local bk = get_xkanji_skip_from_jfm(Nn)
734 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
735 else node_free(gx); gx = get_zero_spec() -- fallback
738 else g.spec=node_copy(xkanji_skip) end
740 g.spec = get_zero_spec()
742 set_attr(g, attr_icflag, XKANJI_SKIP)
743 set_attr(g, attr_uniqid, uniq_id)
748 -------------------- 隣接した「塊」間の処理
750 local function get_OA_skip()
752 local c = (Np.id == id_math and -1) or 'jcharbdd'
753 return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
757 local function get_OB_skip()
759 local c = (Np.id == id_math and -1) or'jcharbdd'
760 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
765 -- (anything) .. jachar
766 local function handle_np_jachar()
768 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
769 g = lineend_fix(calc_ja_ja_glue() or get_kanjiskip()) -- M->K
770 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
771 elseif Nq.met then -- Nq.id==id_hlist
772 g = get_OA_skip() or get_kanjiskip() -- O_A->K
773 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
775 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
776 if Nq.id==id_hlist then Nq.post = 0 end
777 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
779 g = get_OA_skip() -- O_A
780 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
781 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
782 else handle_penalty_always(0, Np.pre, g)
786 -- \jcharwidowpenalty 挿入予定箇所更新
787 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
788 widow_Np.first = Np.first;
789 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
793 -- jachar .. (anything)
794 local function handle_nq_jachar()
797 if Np.id==id_hlist then Np.pre = 0 end
798 g = lineend_fix(get_OB_skip() or get_xkanjiskip(Nq)) -- O_B->X
799 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
801 g = lineend_fix(get_OB_skip()) -- O_B
802 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
803 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
804 else handle_penalty_always(Nq.post, 0, g)
806 real_insert(Nq.lend, g)
810 -- (anything) .. (和文文字で始まる hlist)
811 local function handle_np_ja_hlist()
813 print('handle_np_ja_hlist', Nq.id)
814 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
815 g = lineend_fix(get_OB_skip() or get_kanjiskip()) -- O_B->K
816 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
817 elseif Nq.met then -- Nq.id==id_hlist
818 g = get_kanjiskip() -- K
819 handle_penalty_suppress(0, 0, g); real_insert(0, g)
821 g = get_xkanjiskip(Np) -- X
822 handle_penalty_suppress(0, 0, g); real_insert(0, g)
826 -- (和文文字で終わる hlist) .. (anything)
827 local function handle_nq_ja_hlist()
830 g = get_xkanjiskip(Nq) -- X
831 handle_penalty_suppress(0, 0, g); real_insert(0, g)
835 -- Nq が前側のクラスタとなることによる修正
836 local function adjust_nq()
837 if Nq.id==id_glyph then after_alchar(Nq)
838 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
839 elseif Nq.id == id_pbox_w then
840 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
841 false, Nq, Np, box_stack_level)
845 -------------------- 開始・終了時の処理
848 local function handle_list_tail()
851 -- the current list is to be line-breaked:
852 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
854 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
855 set_attr(g, attr_icflag, BOXBDD)
856 node_insert_after(head, Np.last, g)
859 -- Insert \jcharwidowpenalty
860 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
862 handle_penalty_normal(0,
863 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
866 -- the current list is the contents of a hbox
867 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
868 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
870 set_attr(g, attr_icflag, BOXBDD)
871 head = node_insert_after(head, Np.last, g)
878 local function handle_list_head()
879 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
883 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
885 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
888 set_attr(g, attr_icflag, BOXBDD)
889 if g.id==id_glue and #Bp==0 then
890 local h = node_new(id_penalty)
891 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
893 head = node_insert_before(head, Np.first, g)
900 local function init_var()
902 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
903 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
905 box_stack_level = ltjp.box_stack_level
906 kanji_skip=skip_table_to_spec('kanjiskip')
907 xkanji_skip=skip_table_to_spec('xkanjiskip')
909 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
910 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
911 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
914 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
915 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
916 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
919 -- the current list is to be line-breaked:
920 -- hbox from \parindent is skipped.
921 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
922 or ((lp.id==id_hlist) and (lp.subtype==3))) do
923 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
927 -- the current list is the contents of a hbox:
928 -- insert a sentinelEG
929 last=node.tail(head); local g = node_new(id_kern)
930 node_insert_after(head, last, g); last = g
934 local function cleanup()
935 -- adjust attr_icflag for avoiding error
936 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
937 node_free(kanji_skip); node_free(xkanji_skip)
939 local h = node_next(head)
940 if h.id == id_penalty and h.penalty == 10000 then
942 if h.id == id_glue and h.subtype == 15 and not h.next then
948 head = node_remove(head, last); node_free(last);-- remove the sentinel
952 -------------------- 外部から呼ばれる関数
955 function main(ahead, amode)
956 if not ahead then return ahead end
957 head = ahead; mode = amode; init_var(); calc_np()
959 extract_np(); handle_list_head()
965 extract_np(); adjust_nq()
967 if Np.id == id_jglyph then
970 if Np.id==id_hlist then handle_np_ja_hlist()
971 else handle_np_jachar() end
973 if Nq.id==id_hlist then handle_nq_ja_hlist()
974 else handle_nq_jachar() end
984 function create_inhibitglue_node()
985 local tn = node_new(id_whatsit, sid_user)
986 tn.user_id=30111; tn.type=100; tn.value=1
990 -- Node for indicating beginning of a paragraph
992 function create_beginpar_node()
993 local tn = node_new(id_whatsit, sid_user)
994 tn.user_id=30114; tn.type=100; tn.value=1
998 local function whatsit_callback(Np, lp, Nq, bsl)
999 if Np and Np.nuc then return Np
1000 elseif Np and lp.user_id == 30114 then
1001 Np.first = lp; Np.nuc = lp; Np.last = lp
1004 Np.pre = 0; Np.post = 0
1005 Np.xspc_before = false
1006 Np.xspc_after = false
1007 Np.auto_xspc = false
1011 local function whatsit_after_callback(s, Nq, Np, bsl)
1012 if not s and Nq.nuc.user_id == 30114 then
1013 local x, y = node.prev(Nq.nuc), Nq.nuc
1014 Nq.first, Nq.nuc, Nq.last = x, x, x
1015 head = node_remove(head, y)
1020 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1021 "luatexja.beginpar.np_info", 1)
1022 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1023 "luatexja.beginpar.np_info_after", 1)