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('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat
17 local has_attr = node.has_attribute
18 local set_attr = node.set_attribute
19 local insert_before = node.insert_before
20 local node_next = node.next
21 local round = tex.round
22 local ltjs_fast_get_penalty_table = ltjs.fast_get_penalty_table
23 local ltjf_font_metric_table = ltjf.font_metric_table
24 local ltjf_find_char_class = ltjf.find_char_class
25 local node_new = node.new
26 local node_copy = node.copy
28 local ligature_head = 1
29 local ligature_tail = 2
31 local id_glyph = node.id('glyph')
32 local id_hlist = node.id('hlist')
33 local id_vlist = node.id('vlist')
34 local id_rule = node.id('rule')
35 local id_ins = node.id('ins')
36 local id_mark = node.id('mark')
37 local id_adjust = node.id('adjust')
38 local id_disc = node.id('disc')
39 local id_whatsit = node.id('whatsit')
40 local id_math = node.id('math')
41 local id_glue = node.id('glue')
42 local id_kern = node.id('kern')
43 local id_penalty = node.id('penalty')
45 local id_glue_spec = node.id('glue_spec')
46 local id_jglyph = node.id('glyph') + 256 -- Japanese character
47 local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox
48 local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox)
49 local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit
50 local sid_user = node.subtype('user_defined')
52 local sid_start_link = node.subtype('pdf_start_link')
53 local sid_start_thread = node.subtype('pdf_start_thread')
54 local sid_end_link = node.subtype('pdf_end_link')
55 local sid_end_thread = node.subtype('pdf_end_thread')
57 local ITALIC = luatexja.icflag_table.ITALIC
58 local PACKED = luatexja.icflag_table.PACKED
59 local KINSOKU = luatexja.icflag_table.KINSOKU
60 local FROM_JFM = luatexja.icflag_table.FROM_JFM
61 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
62 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
63 local PROCESSED = luatexja.icflag_table.PROCESSED
64 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
65 local BOXBDD = luatexja.icflag_table.BOXBDD
66 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
70 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
71 local attr_icflag = luatexbase.attributes['ltj@icflag']
72 local max_dimen = 1073741823
74 local function get_attr_icflag(p)
75 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
78 -------------------- Helper functions
80 local function copy_attr(new, old)
84 -- This function is called only for acquiring `special' characters.
85 local function fast_find_char_class(c,m)
86 return m.size_cache.chars[c] or 0
90 local function slow_find_char_class(c, m, oc)
92 local cls = ltjf_find_char_class(oc, m)
93 if xc ~= oc and cls==0 then cls, xc = ltjf_find_char_class(-xc, m) end
97 local zero_glue = node_new(id_glue)
98 spec_zero_glue = node_new(id_glue_spec) -- must be public, since mentioned from other sources
99 local spec_zero_glue = spec_zero_glue
100 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
101 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
102 zero_glue.spec = spec_zero_glue
104 local function skip_table_to_spec(n)
105 local g, st = node_new(id_glue_spec), ltjs.fast_get_skip_table(n)
106 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
107 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
113 local function add_penalty(p,e)
116 if e<=-10000 then pp = 0 end
117 elseif pp<=-10000 then
118 if e>=10000 then pp = 0 end
121 if pp>=10000 then p.penalty = 10000
122 elseif pp<=-10000 then p.penalty = -10000
123 else p.penalty = pp end
129 diffmet_rule = math.two_paverage
130 function math.two_add(a,b) return a+b end
131 function math.two_average(a,b) return (a+b)*0.5 end
132 function math.two_paverage(a,b) return (a+b)*0.5 end
133 function math.two_pleft(a,b) return a end
134 function math.two_pright(a,b) return b end
136 local head -- the head of current list
139 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
141 local ihb_flag -- JFM グルー挿入抑止用 flag
142 -- on: \inhibitglue 指定時,hlist の周囲
144 -------------------- hlist 内の文字の検索
146 local first_char, last_char, find_first_char
148 local function check_box(box_ptr, box_end)
149 local p = box_ptr; local found_visible_node = false
151 find_first_char = false; first_char = nil; last_char = nil
154 while p and p~=box_end do
156 if pid==id_kern and p.subtype==2 then
157 p = node_next(node_next(node_next(p))); pid = p.id -- p must be glyph_node
159 if pid==id_glyph then
161 if find_first_char then
162 first_char = p; find_first_char = false
164 last_char = p; found_visible_node = true; p=node_next(p)
165 if (not p) or p==box_end then return found_visible_node end
167 pid = p.id -- p must be non-nil
169 if pid==id_kern and get_attr_icflag(p)==IC_PROCESSED then
171 elseif pid==id_hlist then
172 if PACKED == get_attr_icflag(p) then
173 if find_first_char then
174 first_char = p.head; find_first_char = false
176 last_char = p.head; found_visible_node = true
179 if check_box(p.head, nil) then found_visible_node = true end
180 else if find_first_char then
181 find_first_char = false
187 elseif not (pid==id_ins or pid==id_mark
188 or pid==id_adjust or pid==id_whatsit
189 or pid==id_penalty) then
190 found_visible_node = true
191 if find_first_char then
192 find_first_char = false
199 return found_visible_node
202 function check_box_high(Nx, box_ptr, box_end)
203 first_char = nil; last_char = nil; find_first_char = true
204 if check_box(box_ptr, box_end) then
206 if first_char.font == (has_attr(first_char, attr_curjfnt) or -1) then
207 set_np_xspc_jachar(Nx, first_char)
209 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
216 -------------------- Np の計算と情報取得
218 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
219 function (Np, lp, Nq)
220 if Np.nuc then return Np
222 return Np -- your code
225 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
226 function (stat, Nq, Np) return false end)
231 local function set_attr_icflag_processed(p)
232 if get_attr_icflag(p)<= ITALIC then
233 set_attr(p, attr_icflag, PROCESSED)
237 local function check_next_ickern(lp)
238 if lp.id == id_kern and ITALIC == get_attr_icflag(lp) then
239 set_attr(lp, attr_icflag, IC_PROCESSED)
240 Np.last = lp; return node_next(lp)
242 Np.last = Np.nuc; return lp
246 local function calc_np_pbox(lp, last)
247 Np.first = Np.first or lp; Np.id = id_pbox
248 local lpa = KINSOKU -- dummy=
249 set_attr(lp, attr_icflag, get_attr_icflag(lp));
250 while lp~=last and lpa>=PACKED and lpa<BOXBDD do
252 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
253 -- get_attr_icflag() ではいけない!
255 return check_next_ickern(lp)
259 local calc_np_auxtable = {
260 [id_glyph] = function (lp)
261 Np.first, Np.nuc = (Np.first or lp), lp;
262 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
263 --set_attr_icflag_processed(lp) treated in ltj-setwidth.lua
264 return true, check_next_ickern(node_next(lp));
266 [id_hlist] = function(lp)
267 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
268 set_attr_icflag_processed(lp)
269 Np.id = (lp.shift~=0) and id_box_like or id_hlist
270 return true, node_next(lp)
272 box_like = function(lp)
273 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
274 Np.id = id_box_like; set_attr_icflag_processed(lp);
275 return true, node_next(lp);
278 set_attr_icflag_processed(lp); return false, node_next(lp)
280 [id_whatsit] = function(lp)
281 if lp.subtype==sid_user then
282 if lp.user_id==30111 then
283 local lq = node_next(lp);
284 head = node.remove(head, lp); node.free(lp); ihb_flag = true
287 set_attr_icflag_processed(lp)
288 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
291 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
292 return true, node_next(lp)
294 return false, node_next(lp)
298 -- we do special treatment for these whatsit nodes.
299 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
301 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
302 Np.first, Nq.last = nil, lp;
304 set_attr_icflag_processed(lp); return false, node_next(lp)
307 [id_math] = function(lp)
308 Np.first, Np.nuc = (Np.first or lp), lp;
309 set_attr_icflag_processed(lp); lp = node_next(lp)
310 while lp.id~=id_math do
311 set_attr_icflag_processed(lp); lp = node_next(lp)
313 set_attr_icflag_processed(lp);
314 Np.last, Np.id = lp, id_math;
315 return true, node_next(lp);
317 discglue = function(lp)
318 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
319 Np.id = lp.id; set_attr_icflag_processed(lp); return true, node_next(lp)
321 [id_kern] = function(lp)
322 Np.first = Np.first or lp
323 if lp.subtype==2 then
324 set_attr_icflag_processed(lp); lp = node_next(lp)
325 set_attr_icflag_processed(lp); lp = node_next(lp)
326 set_attr_icflag_processed(lp); lp = node_next(lp)
327 set_attr_icflag_processed(lp); Np.nuc = lp
328 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
329 return true, check_next_ickern(node_next(lp));
331 Np.id = id_kern; set_attr_icflag_processed(lp);
332 Np.last = lp; return true, node_next(lp)
335 [id_penalty] = function(lp)
336 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
337 return false, node_next(lp)
340 calc_np_auxtable[id_vlist] = calc_np_auxtable.box_like
341 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
342 calc_np_auxtable[13] = calc_np_auxtable.box_like
343 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
344 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
345 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
346 calc_np_auxtable[id_disc] = calc_np_auxtable.discglue
347 calc_np_auxtable[id_glue] = calc_np_auxtable.discglue
350 function calc_np(lp, last)
352 -- We assume lp = node_next(Np.last)
353 Np, Nq, ihb_flag = Nq, Np, false
354 -- We clear `predefined' entries of Np before pairs() loop,
355 -- because using only pairs() loop is slower.
356 Np.post, Np.pre, Np.xspc = nil, nil, nil
357 Np.first, Np.id, Np.last, Np.met = nil, nil, nil
358 Np.auto_kspc, Np.auto_xspc, Np.char, Np.class, Np.nuc = nil, nil, nil, nil, nil
359 for k in pairs(Np) do Np[k] = nil end
361 for k = 1,#Bp do Bp[k] = nil end
363 local lpa = has_attr(lp, attr_icflag) or 0
366 if lpa == BOXBDD then
367 local lq = node_next(lp)
368 head = node.remove(head, lp); node.free(lp); lp = lq
369 else return calc_np_pbox(lp, last)
372 k, lp = calc_np_auxtable[lp.id](lp)
373 if k then return lp end
380 local calc_np = calc_np
382 -- extract informations from Np
383 -- We think that "Np is a Japanese character" if Np.met~=nil,
384 -- "Np is an alphabetic character" if Np.pre~=nil,
385 -- "Np is not a character" otherwise.
389 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
390 local attr_orig_char = luatexbase.attributes['ltj@origchar']
391 local attr_autospc = luatexbase.attributes['ltj@autospc']
392 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
393 function set_np_xspc_jachar(Nx, x)
394 local m = ltjf_font_metric_table[x.font]
395 local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, x.char)
396 Nx.class = cls; set_attr(x, attr_jchar_class, cls)
397 Nx.met, Nx.char = m, c
398 local t = ltjs.fast_get_penalty_table_parent(c)
400 Nx.post = t.post or 0
402 Nx.kcat = t.kcat or 0
403 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
405 local set_np_xspc_jachar = set_np_xspc_jachar
408 local floor = math.floor
409 function set_np_xspc_alchar(Nx, c,x, lig)
411 local xc, xs = x.components, x.subtype
412 if lig == ligature_head then
413 while xc and xs and xs%4>=2 do
414 x = xc; xc, xs = x.components, x.subtype
418 while xc and xs and xs%4>=2 do
419 x = node.tail(xc); xc, xs = x.components, x.subtype
423 local t = ltjs.fast_get_penalty_table_parent(c)
425 Nx.post = t.post or 0
429 Nx.pre, Nx.post, Nx.char = 0, 0, -1
430 Nx.xspc = ltjs_fast_get_penalty_table('xsp', -1) or 3
433 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
435 local set_np_xspc_alchar = set_np_xspc_alchar
438 function extract_np()
439 local x, i = Np.nuc, Np.id;
440 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
441 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
442 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
443 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
444 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
445 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
449 -- change the information for the next loop
450 -- (will be done if Nx is an alphabetic character or a hlist)
451 function after_hlist(Nx)
452 local s = Nx.last_char
454 if s.font == (has_attr(s, attr_curjfnt) or -1) then
455 set_np_xspc_jachar(Nx, s)
457 set_np_xspc_alchar(Nx, s.char, s, ligature_tail)
460 Nx.pre, Nx.met = nil, nil
464 function after_alchar(Nx)
466 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
470 local after_hlist, after_alchar, extract_np = after_hlist, after_alchar, extract_np
472 -------------------- 最下層の処理
474 -- change penalties (or create a new penalty, if needed)
475 local function handle_penalty_normal(post, pre, g)
476 local a = (pre or 0) + (post or 0)
478 if (a~=0 and not(g and g.id==id_kern)) then
479 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
480 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
482 head = insert_before(head, Np.first, p)
484 set_attr(p, attr_icflag, KINSOKU)
486 else for _, v in pairs(Bp) do add_penalty(v,a) end
490 local function handle_penalty_always(post, pre, g)
491 local a = (pre or 0) + (post or 0)
493 if not (g and g.id==id_glue) then
494 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
495 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
497 head = insert_before(head, Np.first, p)
499 set_attr(p, attr_icflag, KINSOKU)
501 else for _, v in pairs(Bp) do add_penalty(v,a) end
505 local function handle_penalty_suppress(post, pre, g)
506 local a = (pre or 0) + (post or 0)
508 if g and g.id==id_glue then
509 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
510 p.penalty = 10000; head = insert_before(head, Np.first, p)
512 set_attr(p, attr_icflag, KINSOKU)
514 else for _, v in pairs(Bp) do add_penalty(v,a) end
518 -- 和文文字間の JFM glue を node 化
519 local function new_jfm_glue(m, bc, ac)
520 -- bc, ac: char classes
521 local z = m.size_cache.char_type[bc]
522 local g, d = z.glue[ac], 0
524 g,d = node_copy(g[1]), g[2];
525 g.spec = node_copy(g.spec); -- node_copy は spec をコピーする
529 g = node_new(id_kern); --copy_attr(g, Nn.nuc)
530 g.subtype = 1; g.kern, d = k[1], k[2]
531 set_attr(g, attr_icflag, FROM_JFM);
537 -- Nq.last (kern w) .... (glue/kern g) Np.first
538 local function real_insert(w, g)
540 head = insert_before(head, Np.first, g)
546 -------------------- 和文文字間空白量の決定
551 local function get_kanjiskip_normal()
552 if Np.auto_kspc or Nq.auto_kspc then
553 return node_copy(kanji_skip)
555 local g = node_copy(zero_glue)
556 set_attr(g, attr_icflag, KANJI_SKIP)
560 local function get_kanjiskip_jfm()
562 if Np.auto_kspc or Nq.auto_kspc then
563 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
564 local gx = node_new(id_glue_spec);
565 gx.stretch_order, gx.shrink_order = 0, 0
566 local pm, qm = Np.met, Nq.met
567 local bk = qm.size_cache.kanjiskip or {0, 0, 0}
568 if (pm.size_cache==qm.size_cache) and (qm.var==pm.var) then
569 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
571 local ak = pm.size_cache.kanjiskip or {0, 0, 0}
572 gx.width = round(diffmet_rule(bk[1], ak[1]))
573 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
574 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
578 g = node_copy(zero_glue)
580 set_attr(g, attr_icflag, KANJI_SKIP)
584 local function calc_ja_ja_aux(gb,ga, db, da)
585 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
586 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
587 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
588 and diffmet_rule ~= math.two_paverage then
589 rbb, rab, rba, raa = 1,0,0,1
592 if ga then gb = node_new(id_kern); gb.kern = 0 else return nil end
594 ga = node_new(id_kern); ga.kern = 0
597 local k = node.type(gb.id) .. node.type(ga.id)
598 if k == 'glueglue' then
600 gb.spec.width = round(diffmet_rule(
601 rbb*gb.spec.width + rba*ga.spec.width,
602 rab*gb.spec.width + raa*ga.spec.width ))
603 gb.spec.stretch = round(diffmet_rule(
604 rbb*gb.spec.stretch + rba*ga.spec.stretch,
605 rab*gb.spec.stretch + raa*ga.spec.stretch ))
606 gb.spec.shrink = -round(diffmet_rule(
607 -rbb*gb.spec.shrink - rba*ga.spec.shrink,
608 -rab*gb.spec.shrink - raa*ga.spec.shrink ))
611 elseif k == 'kernkern' then
613 gb.kern = round(diffmet_rule(
614 rbb*gb.kern + rba*ga.kern,
615 rab*gb.kern + raa*ga.kern ))
618 elseif k == 'kernglue' then
619 -- gb: kern, ga: glue
620 ga.spec.width = round(diffmet_rule(
621 rbb*gb.kern + rba*ga.spec.width,
622 rab*gb.kern + raa*ga.spec.width ))
623 ga.spec.stretch = round(diffmet_rule(
624 rba*ga.spec.stretch, raa*ga.spec.stretch ))
625 ga.spec.shrink = -round(diffmet_rule(
626 -rba*ga.spec.shrink,-raa*ga.spec.shrink ))
630 -- gb: glue, ga: kern
631 gb.spec.width = round(diffmet_rule(
632 rba*ga.kern + rbb*gb.spec.width,
633 raa*ga.kern + rab*gb.spec.width ))
634 gb.spec.stretch = round(diffmet_rule(
635 rbb*gb.spec.stretch, rab*gb.spec.stretch ))
636 gb.spec.shrink = -round(diffmet_rule(
637 -rbb*gb.spec.shrink,-rab*gb.spec.shrink ))
643 local function calc_ja_ja_glue()
644 if ihb_flag then return nil
646 local qm, pm = Nq.met, Np.met
647 if (qm.size_cache==pm.size_cache) and (qm.var==pm.var) then
648 return new_jfm_glue(qm, Nq.class, Np.class)
650 local npn, nqn = Np.nuc, Nq.nuc
651 local gb, db = new_jfm_glue(qm, Nq.class,
652 slow_find_char_class(has_attr(npn, attr_orig_char), qm, npn.char))
653 local ga, da = new_jfm_glue(pm,
654 slow_find_char_class(has_attr(nqn, attr_orig_char), pm, nqn.char),
656 return calc_ja_ja_aux(gb, ga, db, da);
661 -------------------- 和欧文間空白量の決定
665 local function get_xkanjiskip_normal(Nn)
666 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
667 return node_copy(xkanji_skip)
669 local g = node_copy(zero_glue)
670 set_attr(g, attr_icflag, XKANJI_SKIP)
674 local function get_xkanjiskip_jfm(Nn)
676 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
677 g = node_new(id_glue); --copy_attr(g, Nn.nuc)
678 local gx = node_new(id_glue_spec);
679 gx.stretch_order, gx.shrink_order = 0, 0
680 local bk = Nn.met.size_cache.xkanjiskip or {0, 0, 0}
681 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
684 g = node_copy(zero_glue)
686 set_attr(g, attr_icflag, XKANJI_SKIP)
692 -------------------- 隣接した「塊」間の処理
694 local function get_OA_skip()
697 return new_jfm_glue(pm,
698 fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), pm), Np.class)
702 local function get_OB_skip()
705 return new_jfm_glue(qm, Nq.class,
706 fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
711 -- (anything) .. jachar
712 local function handle_np_jachar(mode)
714 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
715 local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
716 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
717 elseif Nq.met then -- qid==id_hlist
718 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
719 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
721 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
722 if qid==id_hlist then Nq.post = 0 end
723 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
725 local g = get_OA_skip() -- O_A
726 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
727 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
728 else handle_penalty_always(0, Np.pre, g)
732 if mode and Np.kcat%2~=1 then
733 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
738 -- jachar .. (anything)
739 local function handle_nq_jachar()
741 if Np.id==id_hlist then Np.pre = 0 end
742 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
743 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
745 local g = get_OB_skip() -- O_B
746 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
747 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
748 else handle_penalty_always(Nq.post, 0, g)
754 -- (anything) .. (和文文字で始まる hlist)
755 local function handle_np_ja_hlist()
757 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
758 local g = get_OB_skip() or get_kanjiskip() -- O_B->K
759 handle_penalty_normal(Nq.post, 0, g); real_insert(0, g)
760 elseif Nq.met then -- Nq.id==id_hlist
761 local g = get_kanjiskip() -- K
762 handle_penalty_suppress(0, 0, g); real_insert(0, g)
764 local g = get_xkanjiskip(Np) -- X
765 handle_penalty_suppress(0, 0, g); real_insert(0, g)
769 -- (和文文字で終わる hlist) .. (anything)
770 local function handle_nq_ja_hlist()
772 local g = get_xkanjiskip(Nq) -- X
773 handle_penalty_suppress(0, 0, g); real_insert(0, g)
777 -- Nq が前側のクラスタとなることによる修正
778 local function adjust_nq()
779 if Nq.id==id_glyph then after_alchar(Nq)
780 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
781 elseif Nq.id == id_pbox_w then
782 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
787 -------------------- 開始・終了時の処理
790 local function handle_list_tail(mode)
793 -- the current list is to be line-breaked.
794 -- Insert \jcharwidowpenalty
795 Bp = widow_Bp; Np = widow_Np
797 handle_penalty_normal(0,
798 ltjs_fast_get_penalty_table('jwp', 0) or 0)
801 -- the current list is the contents of a hbox
802 local npi, pm = Np.id, Np.met
803 if npi == id_jglyph or (npi==id_pbox and pm) then
804 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
806 set_attr(g, attr_icflag, BOXBDD)
807 head = node.insert_after(head, Np.last, g)
814 local function handle_list_head(par_indented)
815 local npi, pm = Np.id, Np.met
816 if npi == id_jglyph or (npi==id_pbox and pm) then
818 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
820 set_attr(g, attr_icflag, BOXBDD)
821 if g.id==id_glue and #Bp==0 then
822 local h = node_new(id_penalty); --copy_attr(h, Np.nuc)
823 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
825 head = insert_before(head, Np.first, g)
832 -- return value: (the initial cursor lp), (last node)
833 local function init_var(mode)
834 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
836 kanji_skip = node_new(id_glue)
837 kanji_skip.spec = skip_table_to_spec('kanjiskip')
838 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
839 get_kanjiskip = (kanji_skip.spec.width == max_dimen)
840 and get_kanjiskip_jfm or get_kanjiskip_normal
842 xkanji_skip = node_new(id_glue)
843 xkanji_skip.spec = skip_table_to_spec('xkanjiskip')
844 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
845 get_xkanjiskip = (xkanji_skip.spec.width == max_dimen)
846 and get_xkanjiskip_jfm or get_xkanjiskip_normal
849 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
850 first=nil, id=nil, last=nil, met=nil, nuc=nil,
851 post=nil, pre=nil, xspc=nil,
854 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
855 first=nil, id=nil, last=nil, met=nil, nuc=nil,
856 post=nil, pre=nil, xspc=nil,
859 -- the current list is to be line-breaked:
860 -- hbox from \parindent is skipped.
861 local lp, par_indented, lpi, lps = head, 'boxbdd', head.id, head.subtype
862 while lp and ((lpi==id_whatsit and lps~=sid_user)
863 or ((lpi==id_hlist) and (lps==3))) do
864 if (lpi==id_hlist) and (lps==3) then par_indented = 'parbdd' end
865 lp=node_next(lp); lpi, lps = lp.id, lp.subtype end
866 return lp, node.tail(head), par_indented
868 -- the current list is the contents of a hbox:
870 local g = node_new(id_kern)
871 node.insert_after(head, node.tail(head), g); last = g
872 return head, g, 'boxbdd'
876 local function cleanup(mode, last)
877 -- adjust attr_icflag for avoiding error
878 tex.setattribute('global', attr_icflag, 0)
879 node.free(kanji_skip); node.free(xkanji_skip)
881 local h = node_next(head)
882 if h.id == id_penalty and h.penalty == 10000 then
884 if h.id == id_glue and h.subtype == 15 and not h.next then
890 head = node.remove(head, last); node.free(last);-- remove the sentinel
891 set_attr(head, attr_icflag,
892 get_attr_icflag(head) + PROCESSED_BEGIN_FLAG);
896 -------------------- 外部から呼ばれる関数
899 function main(ahead, mode)
900 if not ahead then return ahead end
902 local lp, last, par_indented = init_var(mode);
903 lp = calc_np(lp, last)
905 extract_np(); handle_list_head(par_indented)
907 return cleanup(mode, last)
909 lp = calc_np(lp, last)
911 extract_np(); adjust_nq()
912 local pid, pm = Np.id, Np.met
914 if pid == id_jglyph then
915 handle_np_jachar(mode)
917 if pid==id_hlist then handle_np_ja_hlist()
918 else handle_np_jachar() end
920 if Nq.id==id_hlist then handle_nq_ja_hlist()
921 else handle_nq_jachar() end
923 lp = calc_np(lp, last)
925 handle_list_tail(mode)
926 return cleanup(mode, last)
931 function create_inhibitglue_node()
932 local tn = node_new(id_whatsit, sid_user)
933 tn.user_id=30111; tn.type=100; tn.value=1
937 -- Node for indicating beginning of a paragraph
939 function create_beginpar_node()
940 local tn = node_new(id_whatsit, sid_user)
941 tn.user_id=30114; tn.type=100; tn.value=1
947 local function whatsit_callback(Np, lp, Nq)
948 if Np and Np.nuc then return Np
949 elseif Np and lp.user_id == 30114 then
950 Np.first = lp; Np.nuc = lp; Np.last = lp
953 Np.pre = 0; Np.post = 0
961 local function whatsit_after_callback(s, Nq, Np)
962 if not s and Nq.nuc.user_id == 30114 then
963 local x, y = node.prev(Nq.nuc), Nq.nuc
964 Nq.first, Nq.nuc, Nq.last = x, x, x
965 head = node.remove(head, y)
970 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
971 "luatexja.beginpar.np_info", 1)
972 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
973 "luatexja.beginpar.np_info_after", 1)