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
186 if pid==id_kern and p.subtype==2 then
187 p = node_next(node_next(node_next(p))); pid = p.id -- p must be glyph_node
189 if pid==id_glyph then
191 if find_first_char then
192 first_char = p; find_first_char = false
194 last_char = p; found_visible_node = true; p=node_next(p)
195 if (not p) or p==box_end then return found_visible_node end
197 pid = p.id -- p must be non-nil
199 if pid==id_kern and has_attr(p, attr_icflag)==IC_PROCESSED then
201 elseif pid==id_hlist then
202 if has_attr(p, attr_icflag)==PACKED then
203 for q in node.traverse_id(id_glyph, p.head) do
204 if find_first_char then
205 first_char = q; find_first_char = false
207 last_char = q; found_visible_node = true; break
211 if check_box(p.head, nil) then found_visible_node = true end
212 else if find_first_char then
213 find_first_char = false
219 elseif not (pid==id_ins or pid==id_mark
220 or pid==id_adjust or pid==id_whatsit
221 or pid==id_penalty) then
222 found_visible_node = true
223 if find_first_char then
224 find_first_char = false
231 return found_visible_node
234 function check_box_high(Nx, box_ptr, box_end)
235 first_char = nil; last_char = nil; find_first_char = true
236 if check_box(box_ptr, box_end) then
238 if first_char.font == has_attr(first_char, attr_curjfnt) then
239 set_np_xspc_jachar(Nx, first_char)
241 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
248 -------------------- Np の計算と情報取得
250 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
251 function (Np, lp, Nq, box_stack_level)
252 if Np.nuc then return Np
254 return Np -- your code
257 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
258 function (stat, Nq, Np, box_stack_level) return false end)
261 local function set_attr_icflag_processed(p)
262 local a = has_attr(p, attr_icflag) or 0
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
289 local calc_np_auxtable = {
290 [id_glyph] = function()
291 Np.first = Np.first or lp
292 if lp.font == has_attr(lp, attr_curjfnt) then
297 Np.nuc = lp; set_attr_icflag_processed(lp)
298 lp = node_next(lp); check_next_ickern(); return true
300 [id_hlist] = function()
301 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
302 set_attr_icflag_processed(lp)
308 lp = node_next(lp); return true
310 [id_vlist] = function()
311 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
312 Np.id = id_box_like; set_attr_icflag_processed(lp);
313 lp = node_next(lp); return true
315 [id_rule] = function()
316 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
317 Np.id = id_box_like; set_attr_icflag_processed(lp);
318 lp = node_next(lp); return true
320 [id_ins] = function()
321 set_attr_icflag_processed(lp); lp = node_next(lp)
324 [id_mark] = function()
325 set_attr_icflag_processed(lp); lp = node_next(lp)
328 [id_adjust] = function()
329 set_attr_icflag_processed(lp); lp = node_next(lp)
332 [id_disc] = function()
333 Np.first = Np.first or lp;
334 Np.nuc = lp; set_attr_icflag_processed(lp);
335 Np.last = lp; Np.id = id_disc; lp = node_next(lp); return true
337 [id_whatsit] = function()
338 if lp.subtype==sid_user then
339 if lp.user_id==30111 then
340 local lq = node_next(lp)
341 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
343 set_attr_icflag_processed(lp)
344 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo"
345 , Np, lp, Nq, box_stack_level)
348 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc; return true
352 -- we do special treatment for these whatsit nodes.
353 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
355 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
356 Nq.last = lp; Np.first = nil
358 set_attr_icflag_processed(lp); lp = node_next(lp)
362 [id_math] = function()
363 Np.first = Np.first or lp; Np.nuc = lp;
364 set_attr_icflag_processed(lp); lp = node_next(lp)
365 while lp.id~=id_math do
366 set_attr_icflag_processed(lp); lp = node_next(lp)
368 set_attr_icflag_processed(lp);
369 Np.last = lp; Np.id = id_math; lp = node_next(lp);
372 [id_glue] = function()
373 Np.first = Np.first or lp; Np.nuc = lp; set_attr_icflag_processed(lp);
374 Np.last = lp; Np.id = id_glue; lp = node_next(lp); return true
376 [id_kern] = function()
377 Np.first = Np.first or lp
378 if lp.subtype==2 then
379 set_attr_icflag_processed(lp); lp = node_next(lp)
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); Np.nuc = lp
383 if lp.font == has_attr(lp, attr_curjfnt) then
388 lp = node_next(lp); check_next_ickern();
390 Np.id = id_kern; set_attr_icflag_processed(lp);
391 Np.last = lp; lp = node_next(lp)
395 [id_penalty] = function()
396 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
397 lp = node_next(lp); return false
400 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
401 Np.id = id_box_like; set_attr_icflag_processed(lp);
402 lp = node_next(lp); return true
406 local function calc_np()
407 -- We assume lp = node_next(Np.last)
409 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
411 for k in pairs(Bp) do Bp[k] = nil end
414 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
426 -- extract informations from Np
427 -- We think that "Np is a Japanese character" if Np.met~=nil,
428 -- "Np is an alphabetic character" if Np.pre~=nil,
429 -- "Np is not a character" otherwise.
432 function set_np_xspc_jachar(Nx, x)
433 local z = ltjf_font_metric_table[x.font]
435 local cls = ltjf_find_char_class(c, z)
436 local m = ltjf_metrics[z.jfm]
437 set_attr(x, attr_jchar_class, cls)
443 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
444 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
445 z = fast_find_char_class('lineend', m)
446 local y = m.size_cache[Nx.size].char_type[Nx.class]
447 if y.kern and y.kern[z] then
452 y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
453 Nx.xspc_before = (y%2==1)
454 Nx.xspc_after = (y>=2)
455 Nx.auto_kspc = (has_attr(x, attr_autospc)==1)
456 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
460 local ligature_head = 1
461 local ligature_tail = 2
462 function set_np_xspc_alchar(Nx, c,x, lig)
464 if lig == ligature_head then
465 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
466 x = x.components; c = x.char
469 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
470 x = node_tail(x.components); c = x.char
473 Nx.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
474 Nx.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
477 Nx.pre = 0; Nx.post = 0; Nx.char = -1
480 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
481 Nx.xspc_before = (y%2==1)
482 Nx.xspc_after = (y>=2)
483 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
487 local function extract_np()
489 if Np.id == id_jglyph then set_np_xspc_jachar(Np, x)
490 elseif Np.id == id_glyph then set_np_xspc_alchar(Np, x.char, x, ligature_head)
491 elseif Np.id == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
492 elseif Np.id == id_pbox then Np.last_char = check_box_high(Np, Np.first, node.next(Np.last))
493 elseif Np.id == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
494 elseif Np.id == id_math then set_np_xspc_alchar(Np, -1, x)
498 -- change the information for the next loop
499 -- (will be done if Nx is an alphabetic character or a hlist)
500 function after_hlist(Nx)
502 if Nx.last_char.font == has_attr(Nx.last_char, attr_curjfnt) then
503 set_np_xspc_jachar(Nx, Nx.last_char);
505 set_np_xspc_alchar(Nx, Nx.last_char.char,Nx.last_char, ligature_tail)
508 Nx.pre = nil; Nx.met = nil
512 local function after_alchar(Nx)
514 set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
518 -------------------- 最下層の処理
520 local function lineend_fix(g)
521 if g and g.id==id_kern then
523 elseif Nq.lend~=0 then
525 g = node_new(id_kern); g.subtype = 1; g.kern = -Nq.lend;
526 set_attr(g, attr_icflag, LINEEND)
527 set_attr(g, attr_uniqid, uniq_id)
528 elseif g.id==id_kern then
529 g.kern = g.kern - Nq.lend
531 g.spec.width = g.spec.width - Nq.lend
537 -- change penalties (or create a new penalty, if needed)
538 local function handle_penalty_normal(post, pre, g)
539 local a = (pre or 0) + (post or 0)
541 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
542 local p = node_new(id_penalty)
543 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
545 head = node_insert_before(head, Np.first, p)
547 set_attr(p, attr_icflag, KINSOKU)
548 set_attr(p, attr_uniqid, uniq_id)
550 else for i, v in pairs(Bp) do add_penalty(v,a) end
554 local function handle_penalty_always(post, pre, g)
555 local a = (pre or 0) + (post or 0)
557 if not (g and g.id==id_glue) or Nq.lend~=0 then
558 local p = node_new(id_penalty)
559 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
561 head = node_insert_before(head, Np.first, p)
563 set_attr(p, attr_icflag, KINSOKU)
564 set_attr(p, attr_uniqid, uniq_id)
566 else for i, v in pairs(Bp) do add_penalty(v,a) end
570 local function handle_penalty_suppress(post, pre, g)
571 local a = (pre or 0) + (post or 0)
573 if g and g.id==id_glue then
574 local p = node_new(id_penalty)
575 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
577 set_attr(p, attr_icflag, KINSOKU)
578 set_attr(p, attr_uniqid, uniq_id)
580 else for i, v in pairs(Bp) do add_penalty(v,a) end
584 -- 和文文字間の JFM glue を node 化
585 local function new_jfm_glue(Nn, bc, ac)
586 -- bc, ac: char classes
588 local z = Nn.met.size_cache[Nn.size].char_type[bc]
589 if z.glue and z.glue[ac] then
590 local h = node_new(id_glue_spec)
591 h.width = z.glue[ac][1]
592 h.stretch = z.glue[ac][2]
593 h.shrink = z.glue[ac][3]
594 h.stretch_order=0; h.shrink_order=0
595 g = node_new(id_glue)
596 g.subtype = 0; g.spec = h
597 elseif z.kern and z.kern[ac] then
598 g = node_new(id_kern)
599 g.subtype = 1; g.kern = z.kern[ac]
602 set_attr(g, attr_icflag, FROM_JFM); set_attr(g, attr_uniqid, uniq_id)
607 -- Nq.last (kern w) .... (glue/kern g) Np.first
608 local function real_insert(w, g)
610 local h = node_new(id_kern)
611 set_attr(h, attr_icflag, LINE_END)
612 set_attr(h, attr_uniqid, uniq_id)
613 h.kern = w; h.subtype = 1
614 head = node_insert_after(head, Nq.last, h)
617 head = node_insert_before(head, Np.first, g)
622 -------------------- 和文文字間空白量の決定
625 local function get_kanji_skip_from_jfm(Nn)
626 local i = Nn.met.size_cache[Nn.size].kanjiskip
628 return { i[1], i[2], i[3] }
632 local function get_kanjiskip()
633 local g = node_new(id_glue)
634 if Np.auto_kspc or Nq.auto_kspc then
635 if kanji_skip.width == max_dimen then
636 local gx = node_new(id_glue_spec);
637 gx.stretch_order = 0; gx.shrink_order = 0
638 local bk = get_kanji_skip_from_jfm(Nq)
640 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
643 ak = get_kanji_skip_from_jfm(Np)
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[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 = Nq.char 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.char 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 = calc_ja_ja_glue() or get_kanjiskip() -- M->K
771 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
772 elseif Nq.met then -- Nq.id==id_hlist
773 g = get_OA_skip() or get_kanjiskip() -- O_A->K
774 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
776 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
777 if Nq.id==id_hlist then Nq.post = 0 end
778 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
780 g = get_OA_skip() -- O_A
781 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
782 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
783 else handle_penalty_always(0, Np.pre, g)
787 -- \jcharwidowpenalty 挿入予定箇所更新
788 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
789 widow_Np.first = Np.first;
790 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
794 -- jachar .. (anything)
795 local function handle_nq_jachar()
798 if Np.id==id_hlist then Np.pre = 0 end
799 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
801 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
803 g = get_OB_skip(); g = lineend_fix(g) -- O_B
804 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
805 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
806 else handle_penalty_always(Nq.post, 0, g)
808 real_insert(Nq.lend, g)
812 -- (anything) .. (和文文字で終わる hlist)
813 local function handle_np_ja_hlist()
815 if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
816 g = get_OB_skip() or get_kanjiskip() -- O_B->K
818 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
819 elseif Nq.met then -- Nq.id==id_hlist
820 g = get_kanjiskip() -- K
821 handle_penalty_suppress(0, 0, g); real_insert(0, g)
823 g = get_xkanjiskip(Np) -- X
824 handle_penalty_suppress(0, 0, g); real_insert(0, g)
828 -- (和文文字で終わる hlist) .. (anything)
829 local function handle_nq_ja_hlist()
832 g = get_xkanjiskip(Nq) -- X
833 handle_penalty_suppress(0, 0, g); real_insert(0, g)
837 -- Nq が前側のクラスタとなることによる修正
838 local function adjust_nq()
839 if Nq.id==id_glyph then after_alchar(Nq)
840 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
841 elseif Nq.id == id_pbox_w then
842 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
843 false, Nq, Np, box_stack_level)
847 -------------------- 開始・終了時の処理
850 local function handle_list_tail()
853 -- the current list is to be line-breaked:
854 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
856 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
857 set_attr(g, attr_icflag, BOXBDD)
858 node_insert_after(head, Np.last, g)
861 -- Insert \jcharwidowpenalty
862 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
864 handle_penalty_normal(0,
865 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
868 -- the current list is the contents of a hbox
869 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
870 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
872 set_attr(g, attr_icflag, BOXBDD)
873 head = node_insert_after(head, Np.last, g)
880 local function handle_list_head()
881 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
885 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
887 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
890 set_attr(g, attr_icflag, BOXBDD)
891 if g.id==id_glue and #Bp==0 then
892 local h = node_new(id_penalty)
893 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
895 head = node_insert_before(head, Np.first, g)
902 local function init_var()
904 if uniq_id == 0x7FFFFFF then uniq_id = 0 end
905 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
907 box_stack_level = ltjp.box_stack_level
908 kanji_skip=skip_table_to_spec('kanjiskip')
909 xkanji_skip=skip_table_to_spec('xkanjiskip')
911 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
912 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
913 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
916 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
917 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
918 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
921 -- the current list is to be line-breaked:
922 -- hbox from \parindent is skipped.
923 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
924 or ((lp.id==id_hlist) and (lp.subtype==3))) do
925 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
929 -- the current list is the contents of a hbox:
930 -- insert a sentinelEG
931 last=node.tail(head); local g = node_new(id_kern)
932 node_insert_after(head, last, g); last = g
936 local function cleanup()
937 -- adjust attr_icflag for avoiding error
938 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
939 node_free(kanji_skip); node_free(xkanji_skip)
941 local h = node_next(head)
942 if h.id == id_penalty and h.penalty == 10000 then
944 if h.id == id_glue and h.subtype == 15 and not h.next then
950 head = node_remove(head, last); node_free(last);-- remove the sentinel
954 -------------------- 外部から呼ばれる関数
957 function main(ahead, amode)
958 if not ahead then return ahead end
959 head = ahead; mode = amode; init_var(); calc_np()
961 extract_np(); handle_list_head()
967 extract_np(); adjust_nq()
969 if Np.id == id_jglyph then
972 if Np.id==id_hlist then handle_np_ja_hlist()
973 else handle_np_jachar() end
975 if Nq.id==id_hlist then handle_nq_ja_hlist()
976 else handle_nq_jachar() end
986 function create_inhibitglue_node()
987 local tn = node_new(id_whatsit, sid_user)
988 tn.user_id=30111; tn.type=100; tn.value=1
992 -- Node for indicating beginning of a paragraph
994 function create_beginpar_node()
995 local tn = node_new(id_whatsit, sid_user)
996 tn.user_id=30114; tn.type=100; tn.value=1
1000 local function whatsit_callback(Np, lp, Nq, bsl)
1001 if Np and Np.nuc then return Np
1002 elseif Np and lp.user_id == 30114 then
1003 Np.first = lp; Np.nuc = lp; Np.last = lp
1006 Np.pre = 0; Np.post = 0
1007 Np.xspc_before = false
1008 Np.xspc_after = false
1009 Np.auto_xspc = false
1013 local function whatsit_after_callback(s, Nq, Np, bsl)
1014 if not s and Nq.nuc.user_id == 30114 then
1015 local x, y = node.prev(Nq.nuc), Nq.nuc
1016 Nq.first, Nq.nuc, Nq.last = x, x, x
1017 head = node_remove(head, y)
1022 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1023 "luatexja.beginpar.np_info", 1)
1024 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1025 "luatexja.beginpar.np_info_after", 1)