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 pid==id_math then
188 if find_first_char then
189 first_char = p; find_first_char = false
191 last_char = p; found_visible_node = true
192 elseif not (pid==id_ins or pid==id_mark
193 or pid==id_adjust or pid==id_whatsit
194 or pid==id_penalty) then
195 found_visible_node = true
196 if find_first_char then
197 find_first_char = false
204 return found_visible_node
207 function check_box_high(Nx, box_ptr, box_end)
208 first_char = nil; last_char = nil; find_first_char = true
209 if check_box(box_ptr, box_end) then
210 local first_char = first_char
212 if first_char.id==glyph_node then
213 if first_char.font == (has_attr(first_char, attr_curjfnt) or -1) then
214 set_np_xspc_jachar(Nx, first_char)
216 set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head)
219 set_np_xspc_alchar(Nx, -1,first_char)
226 -------------------- Np の計算と情報取得
228 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
229 function (Np, lp, Nq)
230 if Np.nuc then return Np
232 return Np -- your code
235 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
236 function (stat, Nq, Np) return false end)
241 local function set_attr_icflag_processed(p)
242 if get_attr_icflag(p)<= ITALIC then
243 set_attr(p, attr_icflag, PROCESSED)
247 local function check_next_ickern(lp)
248 if lp.id == id_kern and ITALIC == get_attr_icflag(lp) then
249 set_attr(lp, attr_icflag, IC_PROCESSED)
250 Np.last = lp; return node_next(lp)
252 Np.last = Np.nuc; return lp
256 local function calc_np_pbox(lp, last)
257 Np.first = Np.first or lp; Np.id = id_pbox
258 local lpa = KINSOKU -- dummy=
259 set_attr(lp, attr_icflag, get_attr_icflag(lp));
260 while lp~=last and lpa>=PACKED and lpa<BOXBDD do
262 lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
263 -- get_attr_icflag() ではいけない!
265 return check_next_ickern(lp)
269 local calc_np_auxtable = {
270 [id_glyph] = function (lp)
271 Np.first, Np.nuc = (Np.first or lp), lp;
272 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
273 --set_attr_icflag_processed(lp) treated in ltj-setwidth.lua
274 return true, check_next_ickern(node_next(lp));
276 [id_hlist] = function(lp)
277 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
278 set_attr_icflag_processed(lp)
279 Np.id = (lp.shift~=0) and id_box_like or id_hlist
280 return true, node_next(lp)
282 box_like = function(lp)
283 Np.first = Np.first or lp; Np.nuc = lp; Np.last = lp;
284 Np.id = id_box_like; set_attr_icflag_processed(lp);
285 return true, node_next(lp);
288 set_attr_icflag_processed(lp); return false, node_next(lp)
290 [id_whatsit] = function(lp)
291 if lp.subtype==sid_user then
292 if lp.user_id==30111 then
293 local lq = node_next(lp);
294 head = node.remove(head, lp); node.free(lp); ihb_flag = true
297 set_attr_icflag_processed(lp)
298 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
301 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
302 return true, node_next(lp)
304 return false, node_next(lp)
308 -- we do special treatment for these whatsit nodes.
309 if lp.subtype == sid_start_link or lp.subtype == sid_start_thread then
311 elseif lp.subtype == sid_end_link or lp.subtype == sid_end_thread then
312 Np.first, Nq.last = nil, lp;
314 set_attr_icflag_processed(lp); return false, node_next(lp)
317 [id_math] = function(lp)
318 Np.first, Np.nuc = (Np.first or lp), lp;
319 set_attr_icflag_processed(lp); lp = node_next(lp)
320 while lp.id~=id_math do
321 set_attr_icflag_processed(lp); lp = node_next(lp)
323 set_attr_icflag_processed(lp);
324 Np.last, Np.id = lp, id_math;
325 return true, node_next(lp);
327 discglue = function(lp)
328 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
329 Np.id = lp.id; set_attr_icflag_processed(lp); return true, node_next(lp)
331 [id_kern] = function(lp)
332 Np.first = Np.first or lp
333 if lp.subtype==2 then
334 set_attr_icflag_processed(lp); lp = node_next(lp)
335 set_attr_icflag_processed(lp); lp = node_next(lp)
336 set_attr_icflag_processed(lp); lp = node_next(lp)
337 set_attr_icflag_processed(lp); Np.nuc = lp
338 Np.id = (lp.font == (has_attr(lp, attr_curjfnt) or -1)) and id_jglyph or id_glyph
339 return true, check_next_ickern(node_next(lp));
341 Np.id = id_kern; set_attr_icflag_processed(lp);
342 Np.last = lp; return true, node_next(lp)
345 [id_penalty] = function(lp)
346 Bp[#Bp+1] = lp; set_attr_icflag_processed(lp);
347 return false, node_next(lp)
350 calc_np_auxtable[id_vlist] = calc_np_auxtable.box_like
351 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
352 calc_np_auxtable[13] = calc_np_auxtable.box_like
353 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
354 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
355 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
356 calc_np_auxtable[id_disc] = calc_np_auxtable.discglue
357 calc_np_auxtable[id_glue] = calc_np_auxtable.discglue
360 function calc_np(lp, last)
362 -- We assume lp = node_next(Np.last)
363 Np, Nq, ihb_flag = Nq, Np, false
364 -- We clear `predefined' entries of Np before pairs() loop,
365 -- because using only pairs() loop is slower.
366 Np.post, Np.pre, Np.xspc = nil, nil, nil
367 Np.first, Np.id, Np.last, Np.met = nil, nil, nil
368 Np.auto_kspc, Np.auto_xspc, Np.char, Np.class, Np.nuc = nil, nil, nil, nil, nil
369 for k in pairs(Np) do Np[k] = nil end
371 for k = 1,#Bp do Bp[k] = nil end
373 local lpa = has_attr(lp, attr_icflag) or 0
376 if lpa == BOXBDD then
377 local lq = node_next(lp)
378 head = node.remove(head, lp); node.free(lp); lp = lq
379 else return calc_np_pbox(lp, last)
382 k, lp = calc_np_auxtable[lp.id](lp)
383 if k then return lp end
390 local calc_np = calc_np
392 -- extract informations from Np
393 -- We think that "Np is a Japanese character" if Np.met~=nil,
394 -- "Np is an alphabetic character" if Np.pre~=nil,
395 -- "Np is not a character" otherwise.
399 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
400 local attr_orig_char = luatexbase.attributes['ltj@origchar']
401 local attr_autospc = luatexbase.attributes['ltj@autospc']
402 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
403 function set_np_xspc_jachar(Nx, x)
404 local m = ltjf_font_metric_table[x.font]
405 local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, x.char)
406 Nx.class = cls; set_attr(x, attr_jchar_class, cls)
407 Nx.met, Nx.char = m, c
408 local t = ltjs.fast_get_penalty_table_parent(c)
410 Nx.post = t.post or 0
412 Nx.kcat = t.kcat or 0
413 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
415 local set_np_xspc_jachar = set_np_xspc_jachar
418 local floor = math.floor
419 function set_np_xspc_alchar(Nx, c,x, lig)
421 local xc, xs = x.components, x.subtype
422 if lig == ligature_head then
423 while xc and xs and xs%4>=2 do
424 x = xc; xc, xs = x.components, x.subtype
428 while xc and xs and xs%4>=2 do
429 x = node.tail(xc); xc, xs = x.components, x.subtype
433 local t = ltjs.fast_get_penalty_table_parent(c)
435 Nx.post = t.post or 0
439 Nx.pre, Nx.post, Nx.char = 0, 0, -1
440 Nx.xspc = ltjs_fast_get_penalty_table('xsp', -1) or 3
443 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
445 local set_np_xspc_alchar = set_np_xspc_alchar
448 function extract_np()
449 local x, i = Np.nuc, Np.id;
450 if i == id_jglyph then return set_np_xspc_jachar(Np, x)
451 elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head)
452 elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil)
453 elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
454 elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil)
455 elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
459 -- change the information for the next loop
460 -- (will be done if Nx is an alphabetic character or a hlist)
461 function after_hlist(Nx)
462 local s = Nx.last_char
464 if s.id==glyph_node then
465 if s.font == (has_attr(s, attr_curjfnt) or -1) then
466 set_np_xspc_jachar(Nx, s)
468 set_np_xspc_alchar(Nx, s.char, s, ligature_tail)
471 set_np_xspc_alchar(Nx, -1, s)
474 Nx.pre, Nx.met = nil, nil
478 function after_alchar(Nx)
480 return set_np_xspc_alchar(Nx, x.char,x, ligature_tail)
484 local after_hlist, after_alchar, extract_np = after_hlist, after_alchar, extract_np
486 -------------------- 最下層の処理
488 -- change penalties (or create a new penalty, if needed)
489 local function handle_penalty_normal(post, pre, g)
490 local a = (pre or 0) + (post or 0)
492 if (a~=0 and not(g and g.id==id_kern)) then
493 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
494 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
496 head = insert_before(head, Np.first, p)
498 set_attr(p, attr_icflag, KINSOKU)
500 else for _, v in pairs(Bp) do add_penalty(v,a) end
504 local function handle_penalty_always(post, pre, g)
505 local a = (pre or 0) + (post or 0)
507 if not (g and g.id==id_glue) then
508 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
509 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
511 head = insert_before(head, Np.first, p)
513 set_attr(p, attr_icflag, KINSOKU)
515 else for _, v in pairs(Bp) do add_penalty(v,a) end
519 local function handle_penalty_suppress(post, pre, g)
520 local a = (pre or 0) + (post or 0)
522 if g and g.id==id_glue then
523 local p = node_new(id_penalty); --copy_attr(p, Nq.nuc)
524 p.penalty = 10000; head = insert_before(head, Np.first, p)
526 set_attr(p, attr_icflag, KINSOKU)
528 else for _, v in pairs(Bp) do add_penalty(v,a) end
532 -- 和文文字間の JFM glue を node 化
533 local function new_jfm_glue(m, bc, ac)
534 -- bc, ac: char classes
535 local z = m.size_cache.char_type[bc]
536 local g, d = z.glue[ac], 0
538 g,d = node_copy(g[1]), g[2];
539 g.spec = node_copy(g.spec); -- node_copy は spec をコピーする
543 g = node_new(id_kern); --copy_attr(g, Nn.nuc)
544 g.subtype = 1; g.kern, d = k[1], k[2]
545 set_attr(g, attr_icflag, FROM_JFM);
551 -- Nq.last (kern w) .... (glue/kern g) Np.first
552 local function real_insert(w, g)
554 head = insert_before(head, Np.first, g)
560 -------------------- 和文文字間空白量の決定
565 local function get_kanjiskip_normal()
566 if Np.auto_kspc or Nq.auto_kspc then
567 return node_copy(kanji_skip)
569 local g = node_copy(zero_glue)
570 set_attr(g, attr_icflag, KANJI_SKIP)
574 local function get_kanjiskip_jfm()
576 if Np.auto_kspc or Nq.auto_kspc then
577 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
578 local gx = node_new(id_glue_spec);
579 gx.stretch_order, gx.shrink_order = 0, 0
580 local pm, qm = Np.met, Nq.met
581 local bk = qm.size_cache.kanjiskip or {0, 0, 0}
582 if (pm.size_cache==qm.size_cache) and (qm.var==pm.var) then
583 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
585 local ak = pm.size_cache.kanjiskip or {0, 0, 0}
586 gx.width = round(diffmet_rule(bk[1], ak[1]))
587 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
588 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
592 g = node_copy(zero_glue)
594 set_attr(g, attr_icflag, KANJI_SKIP)
598 local function calc_ja_ja_aux(gb,ga, db, da)
599 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
600 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
601 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
602 and diffmet_rule ~= math.two_paverage then
603 rbb, rab, rba, raa = 1,0,0,1
606 if ga then gb = node_new(id_kern); gb.kern = 0 else return nil end
608 ga = node_new(id_kern); ga.kern = 0
611 local k = node.type(gb.id) .. node.type(ga.id)
612 if k == 'glueglue' then
614 gb.spec.width = round(diffmet_rule(
615 rbb*gb.spec.width + rba*ga.spec.width,
616 rab*gb.spec.width + raa*ga.spec.width ))
617 gb.spec.stretch = round(diffmet_rule(
618 rbb*gb.spec.stretch + rba*ga.spec.stretch,
619 rab*gb.spec.stretch + raa*ga.spec.stretch ))
620 gb.spec.shrink = -round(diffmet_rule(
621 -rbb*gb.spec.shrink - rba*ga.spec.shrink,
622 -rab*gb.spec.shrink - raa*ga.spec.shrink ))
625 elseif k == 'kernkern' then
627 gb.kern = round(diffmet_rule(
628 rbb*gb.kern + rba*ga.kern,
629 rab*gb.kern + raa*ga.kern ))
632 elseif k == 'kernglue' then
633 -- gb: kern, ga: glue
634 ga.spec.width = round(diffmet_rule(
635 rbb*gb.kern + rba*ga.spec.width,
636 rab*gb.kern + raa*ga.spec.width ))
637 ga.spec.stretch = round(diffmet_rule(
638 rba*ga.spec.stretch, raa*ga.spec.stretch ))
639 ga.spec.shrink = -round(diffmet_rule(
640 -rba*ga.spec.shrink,-raa*ga.spec.shrink ))
644 -- gb: glue, ga: kern
645 gb.spec.width = round(diffmet_rule(
646 rba*ga.kern + rbb*gb.spec.width,
647 raa*ga.kern + rab*gb.spec.width ))
648 gb.spec.stretch = round(diffmet_rule(
649 rbb*gb.spec.stretch, rab*gb.spec.stretch ))
650 gb.spec.shrink = -round(diffmet_rule(
651 -rbb*gb.spec.shrink,-rab*gb.spec.shrink ))
657 local function calc_ja_ja_glue()
658 if ihb_flag then return nil
660 local qm, pm = Nq.met, Np.met
661 if (qm.size_cache==pm.size_cache) and (qm.var==pm.var) then
662 return new_jfm_glue(qm, Nq.class, Np.class)
664 local npn, nqn = Np.nuc, Nq.nuc
665 local gb, db = new_jfm_glue(qm, Nq.class,
666 slow_find_char_class(has_attr(npn, attr_orig_char), qm, npn.char))
667 local ga, da = new_jfm_glue(pm,
668 slow_find_char_class(has_attr(nqn, attr_orig_char), pm, nqn.char),
670 return calc_ja_ja_aux(gb, ga, db, da);
675 -------------------- 和欧文間空白量の決定
679 local function get_xkanjiskip_normal(Nn)
680 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
681 return node_copy(xkanji_skip)
683 local g = node_copy(zero_glue)
684 set_attr(g, attr_icflag, XKANJI_SKIP)
688 local function get_xkanjiskip_jfm(Nn)
690 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
691 g = node_new(id_glue); --copy_attr(g, Nn.nuc)
692 local gx = node_new(id_glue_spec);
693 gx.stretch_order, gx.shrink_order = 0, 0
694 local bk = Nn.met.size_cache.xkanjiskip or {0, 0, 0}
695 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
698 g = node_copy(zero_glue)
700 set_attr(g, attr_icflag, XKANJI_SKIP)
706 -------------------- 隣接した「塊」間の処理
708 local function get_OA_skip()
711 return new_jfm_glue(pm,
712 fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), pm), Np.class)
716 local function get_OB_skip()
719 return new_jfm_glue(qm, Nq.class,
720 fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
725 -- (anything) .. jachar
726 local function handle_np_jachar(mode)
728 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
729 local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
730 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
731 elseif Nq.met then -- qid==id_hlist
732 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
733 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
735 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
736 if qid==id_hlist then Nq.post = 0 end
737 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
739 local g = get_OA_skip() -- O_A
740 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
741 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
742 else handle_penalty_always(0, Np.pre, g)
746 if mode and Np.kcat%2~=1 then
747 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
752 -- jachar .. (anything)
753 local function handle_nq_jachar()
755 if Np.id==id_hlist then Np.pre = 0 end
756 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
757 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
759 local g = get_OB_skip() -- O_B
760 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
761 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
762 else handle_penalty_always(Nq.post, 0, g)
768 -- (anything) .. (和文文字で始まる hlist)
769 local function handle_np_ja_hlist()
771 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
772 local g = get_OB_skip() or get_kanjiskip() -- O_B->K
773 handle_penalty_normal(Nq.post, 0, g); real_insert(0, g)
774 elseif Nq.met then -- Nq.id==id_hlist
775 local g = get_kanjiskip() -- K
776 handle_penalty_suppress(0, 0, g); real_insert(0, g)
778 local g = get_xkanjiskip(Np) -- X
779 handle_penalty_suppress(0, 0, g); real_insert(0, g)
783 -- (和文文字で終わる hlist) .. (anything)
784 local function handle_nq_ja_hlist()
786 local g = get_xkanjiskip(Nq) -- X
787 handle_penalty_suppress(0, 0, g); real_insert(0, g)
791 -- Nq が前側のクラスタとなることによる修正
792 local function adjust_nq()
793 if Nq.id==id_glyph then after_alchar(Nq)
794 elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq)
795 elseif Nq.id == id_pbox_w then
796 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
801 -------------------- 開始・終了時の処理
804 local function handle_list_tail(mode)
807 -- the current list is to be line-breaked.
808 -- Insert \jcharwidowpenalty
809 Bp = widow_Bp; Np = widow_Np
811 handle_penalty_normal(0,
812 ltjs_fast_get_penalty_table('jwp', 0) or 0)
815 -- the current list is the contents of a hbox
816 local npi, pm = Np.id, Np.met
817 if npi == id_jglyph or (npi==id_pbox and pm) then
818 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
820 set_attr(g, attr_icflag, BOXBDD)
821 head = node.insert_after(head, Np.last, g)
828 local function handle_list_head(par_indented)
829 local npi, pm = Np.id, Np.met
830 if npi == id_jglyph or (npi==id_pbox and pm) then
832 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
834 set_attr(g, attr_icflag, BOXBDD)
835 if g.id==id_glue and #Bp==0 then
836 local h = node_new(id_penalty); --copy_attr(h, Np.nuc)
837 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
839 head = insert_before(head, Np.first, g)
846 -- return value: (the initial cursor lp), (last node)
847 local function init_var(mode)
848 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
850 kanji_skip = node_new(id_glue)
851 kanji_skip.spec = skip_table_to_spec('kanjiskip')
852 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
853 get_kanjiskip = (kanji_skip.spec.width == max_dimen)
854 and get_kanjiskip_jfm or get_kanjiskip_normal
856 xkanji_skip = node_new(id_glue)
857 xkanji_skip.spec = skip_table_to_spec('xkanjiskip')
858 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
859 get_xkanjiskip = (xkanji_skip.spec.width == max_dimen)
860 and get_xkanjiskip_jfm or get_xkanjiskip_normal
863 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
864 first=nil, id=nil, last=nil, met=nil, nuc=nil,
865 post=nil, pre=nil, xspc=nil,
868 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
869 first=nil, id=nil, last=nil, met=nil, nuc=nil,
870 post=nil, pre=nil, xspc=nil,
873 -- the current list is to be line-breaked:
874 -- hbox from \parindent is skipped.
875 local lp, par_indented, lpi, lps = head, 'boxbdd', head.id, head.subtype
876 while lp and ((lpi==id_whatsit and lps~=sid_user)
877 or ((lpi==id_hlist) and (lps==3))) do
878 if (lpi==id_hlist) and (lps==3) then par_indented = 'parbdd' end
879 lp=node_next(lp); lpi, lps = lp.id, lp.subtype end
880 return lp, node.tail(head), par_indented
882 -- the current list is the contents of a hbox:
884 local g = node_new(id_kern)
885 node.insert_after(head, node.tail(head), g); last = g
886 return head, g, 'boxbdd'
890 local function cleanup(mode, last)
891 -- adjust attr_icflag for avoiding error
892 tex.setattribute('global', attr_icflag, 0)
893 node.free(kanji_skip); node.free(xkanji_skip)
895 local h = node_next(head)
896 if h.id == id_penalty and h.penalty == 10000 then
898 if h.id == id_glue and h.subtype == 15 and not h.next then
904 head = node.remove(head, last); node.free(last);-- remove the sentinel
905 set_attr(head, attr_icflag,
906 get_attr_icflag(head) + PROCESSED_BEGIN_FLAG);
910 -------------------- 外部から呼ばれる関数
913 function main(ahead, mode)
914 if not ahead then return ahead end
916 local lp, last, par_indented = init_var(mode);
917 lp = calc_np(lp, last)
919 extract_np(); handle_list_head(par_indented)
921 return cleanup(mode, last)
923 lp = calc_np(lp, last)
925 extract_np(); adjust_nq()
926 local pid, pm = Np.id, Np.met
928 if pid == id_jglyph then
929 handle_np_jachar(mode)
931 if pid==id_hlist then handle_np_ja_hlist()
932 else handle_np_jachar() end
934 if Nq.id==id_hlist then handle_nq_ja_hlist()
935 else handle_nq_jachar() end
937 lp = calc_np(lp, last)
939 handle_list_tail(mode)
940 return cleanup(mode, last)
945 function create_inhibitglue_node()
946 local tn = node_new(id_whatsit, sid_user)
947 tn.user_id=30111; tn.type=100; tn.value=1
951 -- Node for indicating beginning of a paragraph
953 function create_beginpar_node()
954 local tn = node_new(id_whatsit, sid_user)
955 tn.user_id=30114; tn.type=100; tn.value=1
961 local function whatsit_callback(Np, lp, Nq)
962 if Np and Np.nuc then return Np
963 elseif Np and lp.user_id == 30114 then
964 Np.first = lp; Np.nuc = lp; Np.last = lp
967 Np.pre = 0; Np.post = 0
975 local function whatsit_after_callback(s, Nq, Np)
976 if not s and Nq.nuc.user_id == 30114 then
977 local x, y = node.prev(Nq.nuc), Nq.nuc
978 Nq.first, Nq.nuc, Nq.last = x, x, x
979 head = node.remove(head, y)
984 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
985 "luatexja.beginpar.np_info", 1)
986 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
987 "luatexja.beginpar.np_info_after", 1)