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 require('luatexja.base'); local ltjb = luatexja.base
14 require('luatexja.stack'); local ltjs = luatexja.stack
15 require('luatexja.jfont'); local ltjf = luatexja.jfont
16 require('luatexja.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
33 local id_glyph = node.id('glyph')
34 local id_hlist = node.id('hlist')
35 local id_vlist = node.id('vlist')
36 local id_rule = node.id('rule')
37 local id_ins = node.id('ins')
38 local id_mark = node.id('mark')
39 local id_adjust = node.id('adjust')
40 local id_disc = node.id('disc')
41 local id_whatsit = node.id('whatsit')
42 local id_math = node.id('math')
43 local id_glue = node.id('glue')
44 local id_kern = node.id('kern')
45 local id_penalty = node.id('penalty')
47 local id_glue_spec = node.id('glue_spec')
48 local id_jglyph = node.id('glyph') + 256
49 local id_box_like = node.id('hlist') + 256
50 local id_pbox = node.id('hlist') + 512
51 local sid_user = node.subtype('user_defined')
61 local IC_PROCESSED = 9
67 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
68 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
69 local attr_icflag = luatexbase.attributes['ltj@icflag']
70 local attr_autospc = luatexbase.attributes['ltj@autospc']
71 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
72 local max_dimen = 1073741823
74 local ltjs_get_penalty_table = ltjs.get_penalty_table
75 local ltjs_get_skip_table = ltjs.get_skip_table
76 local ltjf_find_char_class = ltjf.find_char_class
77 local ltjf_font_metric_table = ltjf.font_metric_table
78 local ltjf_metrics = ltjf.metrics
80 local par_indented -- is the paragraph indented?
82 -------------------- Helper functions
84 -- This function is called only for acquiring `special' characters.
85 local function fast_find_char_class(c,m)
86 return m.chars[c] or 0
89 local spec_zero_glue = node_new(id_glue_spec)
90 spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0
91 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0
93 local function get_zero_glue()
94 return node_copy(spec_zero_glue)
97 local function skip_table_to_spec(n)
98 local g = node_new(id_glue_spec)
99 local st = ltjs_get_skip_table(n, box_stack_level)
100 g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink
101 g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order
106 local function add_penalty(p,e)
107 if p.penalty>=10000 then
108 if e<=-10000 then p.penalty = 0 end
109 elseif p.penalty<=-10000 then
110 if e>=10000 then p.penalty = 0 end
112 p.penalty = p.penalty + e
113 if p.penalty>=10000 then p.penalty = 10000
114 elseif p.penalty<=-10000 then p.penalty = -10000 end
120 diffmet_rule = math.two_average
121 function math.two_add(a,b) return a+b end
122 function math.two_average(a,b) return (a+b)/2 end
124 -------------------- idea
125 -- 2 node の間に glue/kern/penalty を挿入する.
126 -- 基本方針: char node q と char node p の間
129 -- first: 最初の node,nuc: p,last: 最後の node
132 -- 実際の glue は Np.last, Nq.first の間に挿入される
133 -- Bp: Np.last, Nq.first の間の penalty node 達の配列
135 -- Np, Nq, Bp, widow_Bp について
137 -- 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,
138 -- 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.
139 -- 同様の関係は Bp, widow_Bp にも.
143 -- node x が non-char node のときは,x のみ
144 -- x が char_node のときは,
145 -- - x が \accent の第二引数だったとき
146 -- [kern2 kern y kern2] x の 3 node が核に加わる
147 -- - x の直後に \/ 由来 kern があったとき
148 -- その \/ 由来の kern が核に加わる
150 -- ins, mark, adjust, whatsit, penalty
152 -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first
153 -- +: kern from LINEEND はここに入る
154 -- *: jfm glue はここに入る
156 local head -- the head of current list
157 local last -- the last node of current list
158 local lp -- 外側での list 走査時のカーソル
161 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
163 local ihb_flag -- JFM グルー挿入抑止用 flag
164 -- on: \inhibitglue 指定時,hlist の周囲
166 -------------------- hlist 内の文字の検索
168 local first_char, last_char, find_first_char
170 local function check_box(box_ptr, box_end)
171 local p = box_ptr; local found_visible_node = false
173 find_first_char = false; first_char = nil; last_char = nil
176 while p and p~=box_end do
180 p = node_next(node_next(node_next(p))); pid = p.id
181 elseif has_attr(p, attr_icflag)==IC_PROCESSED then
182 p = node_next(p); pid = p.id
185 if pid==id_glyph then
187 if find_first_char then
188 first_char = p; find_first_char = false
190 last_char = p; found_visible_node = true; p=node_next(p)
191 if (not p) or p==box_end then return found_visible_node end
194 if pid==id_hlist then
195 if has_attr(p, attr_icflag)==PACKED then
196 for q in node.traverse_id(id_glyph, p.head) do
197 if find_first_char then
198 first_char = q; find_first_char = false
200 last_char = q; found_visible_node = true; break
204 if check_box(p.head, nil) then found_visible_node = true end
205 else if find_first_char then
206 find_first_char = false
212 elseif not (pid==id_ins or pid==id_mark
213 or pid==id_adjust or pid==id_whatsit
214 or pid==id_penalty) then
215 found_visible_node = true
216 if find_first_char then
217 find_first_char = false
224 return found_visible_node
227 -------------------- Np の計算と情報取得
229 local function set_attr_icflag_processed(p)
230 local a = has_attr(p, attr_icflag) or 0
231 if a<=1 then set_attr(p, attr_icflag, PROCESSED) end
234 local function check_next_ickern()
235 if lp.id == id_kern and has_attr(lp, attr_icflag)==ITALIC then
236 set_attr(lp, attr_icflag, IC_PROCESSED); Np.last = lp; lp = node_next(lp)
237 else Np.last = Np.nuc end
240 local function calc_np_pbox()
241 Np.first = lp; Np.id = id_pbox
242 lpa = KINSOKU -- dummy
243 while lp~=last and lpa>=PACKED and lpa~=BOXBDD do
244 Np.nuc = lp; lp = node_next(lp); lpa = has_attr(lp, attr_icflag) or 0
249 local function calc_np()
250 -- We assume lp = node_next(Np.last)
252 Nr = Nq; for k in pairs(Nr) do Nr[k] = nil end
254 for k in pairs(Bp) do Bp[k] = nil end
257 lpi = lp.id; lpa = has_attr(lp, attr_icflag) or 0
258 if lp==last then Np = nil; return
259 elseif lpa>=PACKED then
260 if lpa == BOXBDD then
261 local lq = node_next(lp)
262 head = node_remove(head, lp); node_free(lp); lp = lq
263 else calc_np_pbox(); return end -- id_pbox
264 elseif lpi == id_ins or lpi == id_mark or lpi == id_adjust then
265 set_attr_icflag_processed(lp); lp = node_next(lp)
266 elseif lpi == id_penalty then
267 table_insert(Bp, lp); set_attr_icflag_processed(lp); lp = node_next(lp)
268 elseif lpi == id_whatsit then
269 if lp.subtype==sid_user and lp.user_id==30111 then
270 local lq = node_next(lp)
271 head = node_remove(head, lp); node_free(lp); lp = lq; ihb_flag = true
273 set_attr_icflag_processed(lp); lp = node_next(lp)
275 else -- a `cluster' is found
277 if lpi == id_glyph then -- id_[j]glyph
278 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
279 else Np.id = id_glyph end
280 Np.nuc = lp; set_attr_icflag_processed(lp)
281 lp = node_next(lp); check_next_ickern(); return
282 elseif lpi == id_hlist then -- hlist
283 Np.last = lp; Np.nuc = lp; set_attr_icflag_processed(lp)
284 if lp.shift~=0 then Np.id = id_box_like
286 lp = node_next(lp); return
287 elseif lpi == id_vlist or lpi == id_rule then -- id_box_like
288 Np.nuc = lp; Np.last = lp; Np.id = id_box_like; break
289 elseif lpi == id_math then -- id_math
290 Np.nuc = lp; lp = node_next(lp)
291 while lp.id~=id_math do
292 set_attr_icflag_processed(lp); lp = node_next(lp)
294 elseif lpi == id_kern and lp.subtype==2 then -- id_kern
295 set_attr_icflag_processed(lp); lp = node_next(lp)
296 set_attr_icflag_processed(lp); lp = node_next(lp)
297 set_attr_icflag_processed(lp); lp = node_next(lp)
298 set_attr_icflag_processed(lp); Np.nuc = lp
299 if lp.font == has_attr(lp, attr_curjfnt) then Np.id = id_jglyph
300 else Np.id = id_glyph end
301 lp = node_next(lp); check_next_ickern(); return
302 else -- id_disc, id_glue, id_kern
307 set_attr_icflag_processed(lp); Np.last = lp; Np.id = lpi; lp = node_next(lp)
310 -- extract informations from Np
311 -- We think that "Np is a Japanese character" if Np.met~=nil,
312 -- "Np is an alphabetic character" if Np.pre~=nil,
313 -- "Np is not a character" otherwise.
316 local function set_np_xspc_jachar(x)
317 local z = ltjf_font_metric_table[x.font]
318 local cls = ltjf_find_char_class(x.char, z)
319 set_attr(x, attr_jchar_class, cls)
323 Np.met = ltjf_metrics[z.jfm]
325 Np.pre = ltjs_get_penalty_table('pre', x.char, 0, box_stack_level)
326 Np.post = ltjs_get_penalty_table('post', x.char, 0, box_stack_level)
327 z = fast_find_char_class('lineend', Np.met)
328 local y = Np.met.size_cache[Np.size].char_type[Np.class]
329 if y.kern and y.kern[z] then
334 y = ltjs_get_penalty_table('xsp', x.char, 3, box_stack_level)
335 Np.xspc_before = (y>=2)
336 Np.xspc_after = (y%2==1)
337 Np.auto_kspc = (has_attr(x, attr_autospc)==1)
338 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
342 local ligature_head = 1
343 local ligature_tail = 2
344 local function set_np_xspc_alchar(c,x, lig)
346 if lig == ligature_head then
347 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
348 x = x.components; c = x.char
351 while x.components and x.subtype and math.floor(x.subtype/2)%2==1 do
352 x = node_tail(x.components); c = x.char
355 Np.pre = ltjs_get_penalty_table('pre', c, 0, box_stack_level)
356 Np.post = ltjs_get_penalty_table('post', c, 0, box_stack_level)
358 Np.pre = 0; Np.post = 0
361 local y = ltjs_get_penalty_table('xsp', c, 3, box_stack_level)
362 Np.xspc_before = (y%2==1)
363 Np.xspc_after = (y>=2)
364 Np.auto_xspc = (has_attr(x, attr_autoxspc)==1)
368 local function extract_np()
370 if Np.id == id_jglyph then
371 set_np_xspc_jachar(x)
372 elseif Np.id == id_glyph then
373 set_np_xspc_alchar(x.char, x, ligature_head)
374 elseif Np.id == id_hlist then
375 find_first_char = true; first_char = nil; last_char = nil
376 if check_box(x.head, nil) then
378 if first_char.font == has_attr(first_char, attr_curjfnt) then
379 set_np_xspc_jachar(first_char)
381 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
385 elseif Np.id == id_pbox then -- mikann
386 find_first_char = true; first_char = nil; last_char = nil
387 if check_box(Np.first, node_next(Np.last)) then
389 if first_char.font == has_attr(first_char, attr_curjfnt) then
390 set_np_xspc_jachar(first_char)
392 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
396 elseif Np.id == id_disc then
397 find_first_char = true; first_char = nil; last_char = nil
398 if check_box(x.replace, nil) then
400 if first_char.font == has_attr(first_char, attr_curjfnt) then
401 set_np_xspc_jachar(first_char)
403 set_np_xspc_alchar(first_char.char,first_char, ligature_head)
407 elseif Np.id == id_math then
408 set_np_xspc_alchar(-1, x)
412 -- change the information for the next loop
413 -- (will be done if Np is an alphabetic character or a hlist)
414 local function after_hlist()
416 if last_char.font == has_attr(last_char, attr_curjfnt) then
417 set_np_xspc_jachar(last_char, ligature_after)
419 set_np_xspc_alchar(last_char.char,last_char, ligature_after)
422 Np.pre = nil; Np.met = nil
425 local function after_alchar()
427 set_np_xspc_alchar(x.char,x, ligature_after)
431 -------------------- 最下層の処理
433 local function lineend_fix(g)
434 if g and g.id==id_kern then
436 elseif Nq.lend~=0 then
438 g = node_new(id_kern); g.subtype = 1
439 g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND)
440 elseif g.id==id_kern then
441 g.kern = g.kern - Nq.lend
443 g.spec.width = g.spec.width - Nq.lend
449 -- change penalties (or create a new penalty, if needed)
450 local function handle_penalty_normal(post, pre, g)
451 local a = (pre or 0) + (post or 0)
453 if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then
454 local p = node_new(id_penalty)
455 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
457 head = node_insert_before(head, Np.first, p)
458 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
460 else for i, v in pairs(Bp) do add_penalty(v,a) end
464 local function handle_penalty_always(post, pre, g)
465 local a = (pre or 0) + (post or 0)
467 if not (g and g.id==id_glue) or Nq.lend~=0 then
468 local p = node_new(id_penalty)
469 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
471 head = node_insert_before(head, Np.first, p)
472 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
474 else for i, v in pairs(Bp) do add_penalty(v,a) end
478 local function handle_penalty_suppress(post, pre, g)
479 local a = (pre or 0) + (post or 0)
481 if g and g.id==id_glue then
482 local p = node_new(id_penalty)
483 p.penalty = 10000; head = node_insert_before(head, Np.first, p)
484 Bp[1] = p; set_attr(p, attr_icflag, KINSOKU)
486 else for i, v in pairs(Bp) do add_penalty(v,a) end
490 -- 和文文字間の JFM glue を node 化
491 local function new_jfm_glue(Nn, bc, ac)
492 -- bc, ac: char classes
494 local z = Nn.met.size_cache[Nn.size].char_type[bc]
495 if z.glue and z.glue[ac] then
496 local h = node_new(id_glue_spec)
497 h.width = z.glue[ac][1]
498 h.stretch = z.glue[ac][2]
499 h.shrink = z.glue[ac][3]
500 h.stretch_order=0; h.shrink_order=0
501 g = node_new(id_glue)
502 g.subtype = 0; g.spec = h
503 elseif z.kern and z.kern[ac] then
504 g = node_new(id_kern)
505 g.subtype = 1; g.kern = z.kern[ac]
507 if g then set_attr(g, attr_icflag, FROM_JFM) end
511 -- Nq.last (kern w) .... (glue/kern g) Np.first
512 local function real_insert(w, g)
514 local h = node_new(id_kern)
515 set_attr(h, attr_icflag, LINE_END)
516 h.kern = w; h.subtype = 1
517 head = node_insert_after(head, Nq.last, h)
520 head = node_insert_before(head, Np.first, g)
525 -------------------- 和文文字間空白量の決定
528 local function get_kanji_skip_from_jfm(Nn)
529 local i = Nn.met.size_cache[Nn.size].kanjiskip
531 return { i[1], i[2], i[3] }
535 local function get_kanjiskip()
536 local g = node_new(id_glue)
537 if Np.auto_kspc or Nq.auto_kspc then
538 if kanji_skip.width == max_dimen then
539 local gx = node_new(id_glue_spec);
540 gx.stretch_order = 0; gx.shrink_order = 0
541 local bk = get_kanji_skip_from_jfm(Nq)
543 if (Np.met==Nq.met) and (Nq.size==Np.size) and (Nq.var==Np.var) then
546 ak = get_kanji_skip_from_jfm(Np)
550 gx.width = round(diffmet_rule(bk[1], ak[1]))
551 gx.stretch = round(diffmet_rule(bk[2], ak[2]))
552 gx.shrink = -round(diffmet_rule(-bk[3], -ak[3]))
554 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
557 gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3]
558 else node_free(gx); gx = get_zero_glue() -- fallback
561 else g.spec=node_copy(kanji_skip); node_free(gx) end
563 g.spec = get_zero_glue(); node_free(gx)
565 set_attr(g, attr_icflag, KANJI_SKIP)
569 local function calc_ja_ja_aux(gb,ga)
573 if not ga then return gb end
574 local k = node.type(gb.id) .. node.type(ga.id)
575 if k == 'glueglue' then
577 gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width))
578 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink))
579 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink))
582 elseif k == 'kernkern' then
584 gb.kern = round(diffmet_rule(gb.kern, ga.kern))
587 elseif k == 'kernglue' then
588 -- gb: kern, ga: glue
589 ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width))
590 ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0))
591 ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0))
595 -- gb: glue, ga: kern
596 gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width))
597 gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0))
598 gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0))
605 local function calc_ja_ja_glue()
606 if ihb_flag then return nil
607 elseif (Nq.size==Np.size) and (Nq.met==Np.met) and (Nq.var==Np.var) then
608 return new_jfm_glue(Nq, Nq.class, Np.class)
610 local g = new_jfm_glue(Nq, Nq.class,
611 fast_find_char_class('diffmet',Nq.met))
612 local h = new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met),
614 return calc_ja_ja_aux(g,h)
618 -------------------- 和欧文間空白量の決定
621 local function get_xkanji_skip_from_jfm(Nn)
622 local i = Nn.met.size_cache[Nn.size].xkanjiskip
624 return { i[1], i[2], i[3] }
628 local function get_xkanjiskip(Nn)
629 local g = node_new(id_glue)
630 if Nq.xspc_after and Np.xspc_before and (Nq.auto_xspc or Np.auto_xspc) then
631 if xkanji_skip.width == max_dimen then
632 local gx = node_new(id_glue_spec);
633 gx.stretch_order = 0; gx.shrink_order = 0
634 local bk = get_xkanji_skip_from_jfm(Nn)
636 gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3]
637 else node_free(gx); gx = get_zero_glue() -- fallback
640 else g.spec=node_copy(xkanji_skip) end
642 g.spec = get_zero_glue()
644 set_attr(g, attr_icflag, XKANJI_SKIP)
649 -------------------- 隣接した「塊」間の処理
651 local function get_OA_skip()
654 if Nq.id == id_math then c = -1 else c = 'jcharbdd' end
655 return new_jfm_glue(Np, fast_find_char_class(c,Np.met), Np.class)
659 local function get_OB_skip()
662 if Np.id == id_math then c = -1 else c = 'jcharbdd' end
663 return new_jfm_glue(Nq, Nq.class, fast_find_char_class(c,Nq.met))
668 -- (anything) .. jachar
669 local function handle_np_jachar()
671 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
672 g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
674 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
675 elseif Nq.met then -- Nq.id==id_hlist
676 g = get_OA_skip() or get_kanjiskip() -- O_A->K
677 handle_penalty_normal(0, Np.pre, g); real_insert(0, g)
679 g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
680 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g)
682 g = get_OA_skip() -- O_A
683 if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g)
684 elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g)
685 else handle_penalty_always(0, Np.pre, g)
689 -- \jcharwidowpenalty 挿入予定箇所更新
690 if mode and ltjs_get_penalty_table('kcat', Np.char, 0, box_stack_level)%2~=1 then
691 widow_Np.first = Np.first;
692 local Bpr = widow_Bp; widow_Bp = Bp; Bp = Bpr
696 -- jachar .. (anything)
697 local function handle_nq_jachar()
700 g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
702 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g)
704 g = get_OB_skip(); g = lineend_fix(g) -- O_B
705 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
706 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
707 else handle_penalty_always(Nq.post, 0, g)
709 real_insert(Nq.lend, g)
713 -- (anything) .. (和文文字で終わる hlist)
714 local function handle_np_ja_hlist()
716 if Nq.id==id_jglyph or (Nq.id==id_pbox and Nq.met) then
717 g = get_OB_skip() or get_kanjiskip() -- O_B->K
719 handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g)
720 elseif Nq.met then -- Nq.id==id_hlist
721 g = get_kanjiskip() -- K
722 handle_penalty_suppress(0, 0, g); real_insert(0, g)
724 g = get_xkanjiskip(Np) -- X
725 handle_penalty_suppress(0, 0, g); real_insert(0, g)
729 -- (和文文字で終わる hlist) .. (anything)
730 local function handle_nq_ja_hlist()
733 g = get_xkanjiskip(Nq) -- X
734 handle_penalty_suppress(0, 0, g); real_insert(0, g)
738 -------------------- 開始・終了時の処理
741 local function handle_list_tail()
744 -- the current list is to be line-breaked:
745 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
747 g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend
748 set_attr(g, attr_icflag, BOXBDD)
749 node_insert_after(head, Np.last, g)
752 -- Insert \jcharwidowpenalty
753 Bp = widow_Bp; Np = widow_Np; Nq.lend = 0
755 handle_penalty_normal(0,
756 ltjs_get_penalty_table('jwp', 0, 0, box_stack_level))
759 -- the current list is the contents of a hbox
760 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
761 local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met))
763 set_attr(g, attr_icflag, BOXBDD)
764 head = node_insert_after(head, Np.last, g)
767 head = node_remove(head, last); node_free(last);-- remove the sentinel
769 node_free(kanji_skip); node_free(xkanji_skip)
773 local function handle_list_head()
774 if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then
778 g = new_jfm_glue(Np, fast_find_char_class('parbdd',Np.met), Np.class)
780 g = new_jfm_glue(Np, fast_find_char_class('boxbdd',Np.met), Np.class)
783 set_attr(g, attr_icflag, BOXBDD)
784 if g.id==id_glue and #Bp==0 then
785 local h = node_new(id_penalty)
786 h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD)
788 head = node_insert_before(head, Np.first, g)
795 local function init_var()
796 lp = head; Bp = {}; widow_Bp = {}; widow_Np = {first = nil}
798 box_stack_level = ltjp.box_stack_level
799 kanji_skip=skip_table_to_spec('kanjiskip')
800 xkanji_skip=skip_table_to_spec('xkanjiskip')
802 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
803 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
804 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
807 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
808 first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil,
809 post=nil, pre=nil, var=nil, xspc_after=nil, xspc_before=nil,
812 -- the current list is to be line-breaked:
813 -- hbox from \parindent is skipped.
814 while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user)
815 or ((lp.id==id_hlist) and (lp.subtype==3))) do
816 if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = true end
820 -- the current list is the contents of a hbox:
822 last=node.tail(head); local g = node_new(id_kern)
823 node_insert_after(head, last, g); last = g
827 -------------------- 外部から呼ばれる関数
830 function main(ahead, amode)
831 if not ahead then return ahead end
832 head = ahead; mode = amode; init_var(); calc_np()
834 extract_np(); handle_list_head()
835 if Np.id==id_glyph then after_alchar()
836 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
839 if not mode then head = node_remove(head, last); node_free(last) end
846 if Np.id == id_jglyph then
849 if Np.id==id_hlist then handle_np_ja_hlist()
850 else handle_np_jachar() end
852 if Nq.id==id_hlist then handle_nq_ja_hlist()
853 else handle_nq_jachar() end
856 if Np.id==id_glyph then after_alchar()
857 elseif Np.id==id_hlist or Np.id==id_pbox or Np.id==id_disc then after_hlist()
862 -- adjust attr_icflag
863 tex.attribute[attr_icflag] = -(0x7FFFFFFF)
868 local inhibitglue_node=node_new(id_whatsit, sid_user)
869 inhibitglue_node.user_id=30111; inhibitglue_node.type=100; inhibitglue_node.value=1
871 function create_inhibitglue_node()
872 node.write(node.copy(inhibitglue_node))