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 table_insert = table.insert
32 local uniq_id = 0 -- unique id
34 local id_glyph = node.id('glyph')
35 local id_hlist = node.id('hlist')
36 local id_vlist = node.id('vlist')
37 local id_rule = node.id('rule')
38 local id_ins = node.id('ins')
39 local id_mark = node.id('mark')
40 local id_adjust = node.id('adjust')
41 local id_disc = node.id('disc')
42 local id_whatsit = node.id('whatsit')
43 local id_math = node.id('math')
44 local id_glue = node.id('glue')
45 local id_kern = node.id('kern')
46 local id_penalty = node.id('penalty')
48 local id_glue_spec = node.id('glue_spec')
49 local id_jglyph = node.id('glyph') + 256 -- Japanese character
50 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
51 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
52 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
53 local sid_user = node.subtype('user_defined')
55 local sid_start_link = node.subtype('pdf_start_link')
56 local sid_start_thread = node.subtype('pdf_start_thread')
57 local sid_end_link = node.subtype('pdf_end_link')
58 local sid_end_thread = node.subtype('pdf_end_thread')
68 local IC_PROCESSED = 9
74 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
75 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
76 local attr_icflag = luatexbase.attributes['ltj@icflag']
77 local attr_autospc = luatexbase.attributes['ltj@autospc']
78 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
79 local attr_uniqid = luatexbase.attributes['ltj@uniqid']
80 local max_dimen = 1073741823
82 local ltjs_get_penalty_table = ltjs.get_penalty_table
83 local ltjs_get_skip_table = ltjs.get_skip_table
84 local ltjf_find_char_class = ltjf.find_char_class
85 local ltjf_font_metric_table = ltjf.font_metric_table
86 local ltjf_metrics = ltjf.metrics
88 local par_indented -- is the paragraph indented?
90 -------------------- Helper functions
92 -- This function is called only for acquiring `special' characters.
93 local function fast_find_char_class(c,m)
94 return m.chars[c] or 0
97 local spec_zero_glue = node_new(id_glue_spec)
98 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
99 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
101 local function get_zero_spec()
102 return node_copy(spec_zero_glue)
105 local function skip_table_to_spec(n)
106 local g = node_new(id_glue_spec)
107 local st = ltjs_get_skip_table(n, box_stack_level)
108 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
109 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
114 local function add_penalty(p,e)
115 if p.penalty>=10000 then
116 if e<=-10000 then p.penalty = 0 end
117 elseif p.penalty<=-10000 then
118 if e>=10000 then p.penalty = 0 end
120 p.penalty = p.penalty + e
121 if p.penalty>=10000 then p.penalty = 10000
122 elseif p.penalty<=-10000 then p.penalty = -10000 end
128 diffmet_rule = math.two_average
129 function math.two_add(a,b) return a+b end
130 function math.two_average(a,b) return (a+b)/2 end
132 -------------------- idea
133 -- 2 node の間に glue/kern/penalty を挿入する.
134 -- 基本方針: char node q と char node p の間
137 -- first: 最初の node,nuc: p,last: 最後の node
140 -- 実際の glue は Np.last, Nq.first の間に挿入される
141 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
143 -- Np, Nq, Bp, widow_Bp について
145 -- 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,
146 -- 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.
147 -- 同様の関係は Bp, widow_Bp にも.
151 -- node x が non-char node のときは,x のみ
152 -- x が char_node のときは,
153 -- - x が \accent の第二引数だったとき
154 -- [kern2 kern y kern2] x の 3 node が核に加わる
155 -- - x の直後に \/ 由来 kern があったとき
156 -- その \/ 由来の kern が核に加わる
158 -- ins, mark, adjust, whatsit, penalty
160 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
161 -- +: kern from LINEEND はここに入る
162 -- *: jfm glue はここに入る
164 local head -- the head of current list
165 local last -- the last node of current list
166 local lp -- 外側での list 走査時のカーソル
169 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
171 local ihb_flag -- JFM グルー挿入抑止用 flag
172 -- on: \inhibitglue 指定時,hlist の周囲
174 -------------------- hlist 内の文字の検索
176 local first_char, last_char, find_first_char
178 local function check_box(box_ptr, box_end)
179 local p = box_ptr; local found_visible_node = false
181 find_first_char = false; first_char = nil; last_char = nil
184 while p and p~=box_end do
188 p = node_next(node_next(node_next(p))); pid = p.id
189 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
190 p = node_next(p); pid = p.id
193 if pid==id_glyph then
195 if find_first_char then
196 first_char = p; find_first_char = false
198 last_char = p; found_visible_node = true; p=node_next(p)
199 if (not p) or p==box_end then return found_visible_node end
203 if pid==id_hlist then
204 if has_attr(p, attr_icflag)==PACKED then
205 for q in node.traverse_id(id_glyph, p.head) do
206 if find_first_char then
207 first_char = q; find_first_char = false
209 last_char = q; found_visible_node = true; break
213 if check_box(p.head, nil) then found_visible_node = true end
214 else if find_first_char then
215 find_first_char = false
221 elseif not (pid==id_ins or pid==id_mark
222 or pid==id_adjust or pid==id_whatsit
223 or pid==id_penalty) then
224 found_visible_node = true
225 if find_first_char then
226 find_first_char = false
233 return found_visible_node
236 function check_box_high(Nx, box_ptr, box_end)
237 first_char = nil; last_char = nil; find_first_char = true
238 if check_box(box_ptr, box_end) then
240 if first_char.font == has_attr(first_char, attr_curjfnt) then
241 set_np_xspc_jachar(Nx, first_char)
243 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
250 -------------------- Np の計算と情報取得
252 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
253 function (Np, lp, Nq, box_stack_level)
254 if Np.nuc then return Np
256 return Np -- your code
259 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
260 function (stat, Nq, Np, box_stack_level) return false end)
263 local function set_attr_icflag_processed(p)
264 local a = has_attr(p, attr_icflag) or 0
266 set_attr(p, attr_uniqid, uniq_id)
267 set_attr(p, attr_icflag, PROCESSED)
271 local function check_next_ickern()
272 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
273 set_attr(lp, attr_icflag, IC_PROCESSED)
274 set_attr(lp, attr_uniqid, uniq_id)
275 Np.last = lp; lp = node_next(lp)
276 else Np.last = Np.nuc end
279 local function calc_np_pbox()
280 local uid = has_attr(lp, attr_uniqid)
281 Np.first = Np.first or lp; Np.id = id_pbox
282 lpa = KINSOKU -- dummy=
283 while lp~=last and lpa>=PACKED and lpa~=BOXBDD
284 and has_attr(lp, attr_uniqid) == uid do
285 Np.nuc = lp; set_attr(lp, attr_uniqid, uniq_id)
286 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
291 local calc_np_auxtable = {
292 [id_glyph] = function()
293 Np.first = Np.first or lp
294 if lp.font == has_attr(lp, attr_curjfnt) then
299 Np.nuc = lp; set_attr_icflag_processed(lp)
300 lp = node_next(lp); check_next_ickern(); return true
302 [id_hlist] = function()
303 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
304 set_attr_icflag_processed(lp)
310 lp = node_next(lp); return true
312 [id_vlist] = function()
313 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
314 Np.id = id_box_like; set_attr_icflag_processed(lp);
315 lp = node_next(lp); return true
317 [id_rule] = function()
318 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
319 Np.id = id_box_like; set_attr_icflag_processed(lp);
320 lp = node_next(lp); return true
322 [id_ins] = function()
323 set_attr_icflag_processed(lp); lp = node_next(lp)
326 [id_mark] = function()
327 set_attr_icflag_processed(lp); lp = node_next(lp)
330 [id_adjust] = function()
331 set_attr_icflag_processed(lp); lp = node_next(lp)
334 [id_disc] = function()
335 Np.first = Np.first or lp;
336 Np.nuc = lp; set_attr_icflag_processed(lp);
337 Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
339 [id_whatsit] = function()
340 if lp.subtype==sid_user then
341 if lp.user_id==30111 then
342 local lq = node_next(lp)
343 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
345 set_attr_icflag_processed(lp)
346 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
347 , Np, lp, Nq, box_stack_level)
350 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
354 -- we do special treatment for these whatsit nodes.
355 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
357 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
358 Nq.last = lp; Np.first = nil
360 set_attr_icflag_processed(lp); lp = node_next(lp)
364 [id_math] = function()
365 Np.first = Np.first or lp; Np.nuc = lp;
366 set_attr_icflag_processed(lp); lp = node_next(lp)
367 while lp.id~=id_math do
368 set_attr_icflag_processed(lp); lp = node_next(lp)
370 set_attr_icflag_processed(lp);
371 Np.last = lp; Np.id = id_math; lp = node_next(lp);
374 [id_glue] = function()
375 Np.first = Np.first or lp; Np.nuc = lp; set_attr_icflag_processed(lp);
376 Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
378 [id_kern] = function()
379 Np.first = Np.first or lp
380 if lp.subtype==2 then
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); lp = node_next(lp)
384 set_attr_icflag_processed(lp); Np.nuc = lp
385 if lp.font == has_attr(lp, attr_curjfnt) then
390 lp = node_next(lp); check_next_ickern();
392 Np.id = id_kern; set_attr_icflag_processed(lp);
393 Np.last = lp; lp = node_next(lp)
397 [id_penalty] = function()
398 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
399 lp = node_next(lp); return false
402 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
403 Np.id = id_box_like; set_attr_icflag_processed(lp);
404 lp = node_next(lp); return true
408 local function calc_np()
409 -- We assume lp = node_next(Np.last)
411 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
413 for k in pairs(Bp) do Bp[k] = nil end
416 lpa = has_attr(lp, attr_icflag) or 0
418 if lpa == BOXBDD then
419 local lq = node_next(lp)
420 head = node_remove(head, lp); node_free(lp); lp = lq
421 else calc_np_pbox(); return
423 elseif calc_np_auxtable[lp.id]() then return end
428 -- extract informations from Np
429 -- We think that "Np is a Japanese character" if Np.met~=nil,
430 -- "Np is an alphabetic character" if Np.pre~=nil,
431 -- "Np is not a character" otherwise.
434 function set_np_xspc_jachar(Nx, x)
435 local z = ltjf_font_metric_table[x.font]
437 local cls = ltjf_find_char_class(c, z)
438 local m = ltjf_metrics[z.jfm]
439 set_attr(x, attr_jchar_class, cls)
445 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
446 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
447 z = fast_find_char_class('lineend', m)
448 local y = m.size_cache[Nx.size].char_type[Nx.class]
449 if y.kern and y.kern[z] then
454 y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
455 Nx.xspc_before = (y%2==1)
456 Nx.xspc_after = (y>=2)
457 Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
458 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
462 local ligature_head = 1
463 local ligature_tail = 2
464 function set_np_xspc_alchar(Nx, c,x, lig)
466 if lig == ligature_head then
467 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
468 x = x.components; c = x.char
471 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
472 x = node_tail(x.components); c = x.char
475 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
476 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
479 Nx.pre = 0; Nx.post = 0; Nx.char = -1
482 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
483 Nx.xspc_before = (y%2==1)
484 Nx.xspc_after = (y>=2)
485 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
489 local function extract_np()
491 if Np.id == id_jglyph then set_np_xspc_jachar(Np, x)
492 elseif Np.id == id_glyph then set_np_xspc_alchar(Np, x.char, x, ligature_head)
493 elseif Np.id == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
494 elseif Np.id == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
495 elseif Np.id == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
496 elseif Np.id == id_math then set_np_xspc_alchar(Np, -1, x)
500 -- change the information for the next loop
501 -- (will be done if Nx is an alphabetic character or a hlist)
502 function after_hlist(Nx)
504 if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
505 set_np_xspc_jachar(Nx, Nx.last_char);
507 set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
510 Nx.pre = nil; Nx.met = nil
514 local function after_alchar(Nx)
516 set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
520 -------------------- 最下層の処理
522 local function lineend_fix(g)
523 if g and g.id==id_kern then
525 elseif Nq.lend~=0 then
527 g = node_new(id_kern); g.subtype = 1; g.kern = -Nq.lend;
528 set_attr(g, attr_icflag, LINEEND)
529 set_attr(g, attr_uniqid, uniq_id)
530 elseif g.id==id_kern then
531 g.kern = g.kern - Nq.lend
533 g.spec.width = g.spec.width - Nq.lend
539 -- change penalties (or create a new penalty, if needed)
540 local function handle_penalty_normal(post, pre, g)
541 local a = (pre or 0) + (post or 0)
543 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
544 local p = node_new(id_penalty)
545 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
547 head = node_insert_before(head, Np.first, p)
549 set_attr(p, attr_icflag, KINSOKU)
550 set_attr(p, attr_uniqid, uniq_id)
552 else for i, v in pairs(Bp) do add_penalty(v,a) end
556 local function handle_penalty_always(post, pre, g)
557 local a = (pre or 0) + (post or 0)
559 if not (g and g.id==id_glue) or Nq.lend~=0 then
560 local p = node_new(id_penalty)
561 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
563 head = node_insert_before(head, Np.first, p)
565 set_attr(p, attr_icflag, KINSOKU)
566 set_attr(p, attr_uniqid, uniq_id)
568 else for i, v in pairs(Bp) do add_penalty(v,a) end
572 local function handle_penalty_suppress(post, pre, g)
573 local a = (pre or 0) + (post or 0)
575 if g and g.id==id_glue then
576 local p = node_new(id_penalty)
577 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
579 set_attr(p, attr_icflag, KINSOKU)
580 set_attr(p, attr_uniqid, uniq_id)
582 else for i, v in pairs(Bp) do add_penalty(v,a) end
586 -- 和文文字間の JFM glue を node 化
587 local function new_jfm_glue(Nn, bc, ac)
588 -- bc, ac: char classes
590 local z = Nn.met.size_cache[Nn.size].char_type[bc]
591 if z.glue and z.glue[ac] then
592 local h = node_new(id_glue_spec)
593 h.width = z.glue[ac][1]
594 h.stretch = z.glue[ac][2]
595 h.shrink = z.glue[ac][3]
596 h.stretch_order=0; h.shrink_order=0
597 g = node_new(id_glue)
598 g.subtype = 0; g.spec = h
599 elseif z.kern and z.kern[ac] then
600 g = node_new(id_kern)
601 g.subtype = 1; g.kern = z.kern[ac]
604 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
609 -- Nq.last (kern w) .... (glue/kern g) Np.first
610 local function real_insert(w, g)
612 local h = node_new(id_kern)
613 set_attr(h, attr_icflag, LINE_END)
614 set_attr(h, attr_uniqid, uniq_id)
615 h.kern = w; h.subtype = 1
616 head = node_insert_after(head, Nq.last, h)
619 head = node_insert_before(head, Np.first, g)
624 -------------------- 和文文字間空白量の決定
627 local function get_kanji_skip_from_jfm(Nn)
628 local i = Nn.met.size_cache[Nn.size].kanjiskip
630 return { i[1], i[2], i[3] }
634 local function get_kanjiskip()
635 local g = node_new(id_glue)
636 if Np.auto_kspc or Nq.auto_kspc then
637 if kanji_skip.width == max_dimen then
638 local gx = node_new(id_glue_spec);
639 gx.stretch_order = 0; gx.shrink_order = 0
640 local bk = get_kanji_skip_from_jfm(Nq)
642 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
645 ak = get_kanji_skip_from_jfm(Np)
649 gx.width = round(diffmet_rule(bk[1], ak[1]))
650 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
651 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
653 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
656 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
657 else node_free(gx); gx = get_zero_spec() -- fallback
660 else g.spec=node_copy(kanji_skip); node_free(gx) end
662 g.spec = get_zero_spec(); node_free(gx)
664 set_attr(g, attr_icflag, KANJI_SKIP)
665 set_attr(g, attr_uniqid, uniq_id)
669 local function calc_ja_ja_aux(gb,ga)
673 if not ga then return gb end
674 local k = node.type(gb.id) .. node.type(ga.id)
675 if k == 'glueglue' then
677 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
678 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
679 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
682 elseif k == 'kernkern' then
684 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
687 elseif k == 'kernglue' then
688 -- gb: kern, ga: glue
689 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
690 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
691 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
695 -- gb: glue, ga: kern
696 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
697 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
698 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
705 local function calc_ja_ja_glue()
706 if ihb_flag then return nil
707 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
708 return new_jfm_glue(Nq, Nq.class, Np.class)
710 local g = new_jfm_glue(Nq, Nq.class,
711 fast_find_char_class('diffmet',Nq.met))
712 local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
714 return calc_ja_ja_aux(g,h)
718 -------------------- 和欧文間空白量の決定
721 local function get_xkanji_skip_from_jfm(Nn)
722 local i = Nn.met.size_cache[Nn.size].xkanjiskip
724 return { i[1], i[2], i[3] }
728 local function get_xkanjiskip(Nn)
729 local g = node_new(id_glue)
730 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
731 if xkanji_skip.width == max_dimen then
732 local gx = node_new(id_glue_spec);
733 gx.stretch_order = 0; gx.shrink_order = 0
734 local bk = get_xkanji_skip_from_jfm(Nn)
736 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
737 else node_free(gx); gx = get_zero_spec() -- fallback
740 else g.spec=node_copy(xkanji_skip) end
742 g.spec = get_zero_spec()
744 set_attr(g, attr_icflag, XKANJI_SKIP)
745 set_attr(g, attr_uniqid, uniq_id)
750 -------------------- 隣接した「塊」間の処理
752 local function get_OA_skip()
754 local c = Nq.char or 'jcharbdd'
755 return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
759 local function get_OB_skip()
761 local c = Np.char or 'jcharbdd'
762 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
767 -- (anything) .. jachar
768 local function handle_np_jachar()
770 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then
771 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
773 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
774 elseif Nq.met then -- Nq.id==id_hlist
775 g = get_OA_skip() or get_kanjiskip() -- O_A->K
776 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
778 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
779 if Nq.id==id_hlist then Nq.post = 0 end
780 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
782 g = get_OA_skip() -- O_A
783 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
784 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
785 else handle_penalty_always(0, Np.pre, g)
789 -- \jcharwidowpenalty 挿入予定箇所更新
790 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
791 widow_Np.first = Np.first;
792 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
796 -- jachar .. (anything)
797 local function handle_nq_jachar()
800 if Np.id==id_hlist then Np.pre = 0 end
801 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
803 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
805 g = get_OB_skip(); g = lineend_fix(g) -- O_B
806 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
807 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
808 else handle_penalty_always(Nq.post, 0, g)
810 real_insert(Nq.lend, g)
814 -- (anything) .. (和文文字で終わる hlist)
815 local function handle_np_ja_hlist()
817 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
818 g = get_OB_skip() or get_kanjiskip() -- O_B->K
820 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
821 elseif Nq.met then -- Nq.id==id_hlist
822 g = get_kanjiskip() -- K
823 handle_penalty_suppress(0, 0, g); real_insert(0, g)
825 g = get_xkanjiskip(Np) -- X
826 handle_penalty_suppress(0, 0, g); real_insert(0, g)
830 -- (和文文字で終わる hlist) .. (anything)
831 local function handle_nq_ja_hlist()
834 g = get_xkanjiskip(Nq) -- X
835 handle_penalty_suppress(0, 0, g); real_insert(0, g)
839 -- Nq が前側のクラスタとなることによる修正
840 local function adjust_nq()
841 if Nq.id==id_glyph then after_alchar(Nq)
842 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
843 elseif Nq.id == id_pbox_w then
844 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
845 false, Nq, Np, box_stack_level)
849 -------------------- 開始・終了時の処理
852 local function handle_list_tail()
855 -- the current list is to be line-breaked:
856 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
858 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
859 set_attr(g, attr_icflag, BOXBDD)
860 node_insert_after(head, Np.last, g)
863 -- Insert \jcharwidowpenalty
864 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
866 handle_penalty_normal(0,
867 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
870 -- the current list is the contents of a hbox
871 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
872 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
874 set_attr(g, attr_icflag, BOXBDD)
875 head = node_insert_after(head, Np.last, g)
882 local function handle_list_head()
883 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
887 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
889 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
892 set_attr(g, attr_icflag, BOXBDD)
893 if g.id==id_glue and #Bp==0 then
894 local h = node_new(id_penalty)
895 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
897 head = node_insert_before(head, Np.first, g)
904 local function init_var()
906 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
907 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
909 box_stack_level = ltjp.box_stack_level
910 kanji_skip=skip_table_to_spec('kanjiskip')
911 xkanji_skip=skip_table_to_spec('xkanjiskip')
913 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
914 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
915 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
918 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
919 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
920 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
923 -- the current list is to be line-breaked:
924 -- hbox from \parindent is skipped.
925 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
926 or ((lp.id==id_hlist) and (lp.subtype==3))) do
927 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
931 -- the current list is the contents of a hbox:
932 -- insert a sentinelEG
933 last=node.tail(head); local g = node_new(id_kern)
934 node_insert_after(head, last, g); last = g
938 local function cleanup()
939 -- adjust attr_icflag for avoiding error
940 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
941 node_free(kanji_skip); node_free(xkanji_skip)
943 local h = node_next(head)
944 if h.id == id_penalty and h.penalty == 10000 then
946 if h.id == id_glue and h.subtype == 15 and not h.next then
952 head = node_remove(head, last); node_free(last);-- remove the sentinel
956 -------------------- 外部から呼ばれる関数
959 function main(ahead, amode)
960 if not ahead then return ahead end
961 head = ahead; mode = amode; init_var(); calc_np()
963 extract_np(); handle_list_head()
969 extract_np(); adjust_nq()
971 if Np.id == id_jglyph then
974 if Np.id==id_hlist then handle_np_ja_hlist()
975 else handle_np_jachar() end
977 if Nq.id==id_hlist then handle_nq_ja_hlist()
978 else handle_nq_jachar() end
988 function create_inhibitglue_node()
989 local tn = node_new(id_whatsit, sid_user)
990 tn.user_id=30111; tn.type=100; tn.value=1
994 -- Node for indicating beginning of a paragraph
996 function create_beginpar_node()
997 local tn = node_new(id_whatsit, sid_user)
998 tn.user_id=30114; tn.type=100; tn.value=1
1002 local function whatsit_callback(Np, lp, Nq, bsl)
1003 if Np and Np.nuc then return Np
1004 elseif Np and lp.user_id == 30114 then
1005 Np.first = lp; Np.nuc = lp; Np.last = lp
1008 Np.pre = 0; Np.post = 0
1009 Np.xspc_before = false
1010 Np.xspc_after = false
1011 Np.auto_xspc = false
1015 local function whatsit_after_callback(s, Nq, Np, bsl)
1016 if not s and Nq.nuc.user_id == 30114 then
1017 local x, y = node.prev(Nq.nuc), Nq.nuc
1018 Nq.first, Nq.nuc, Nq.last = x, x, x
1019 head = node_remove(head, y)
1024 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1025 "luatexja.beginpar.np_info", 1)
1026 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1027 "luatexja.beginpar.np_info_after", 1)