4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues, [x]kanjiskip and others',
9 luatexja.jfmglue = luatexja.jfmglue or {}
11 luatexja.load_module 'base'; local ltjb = luatexja.base
12 luatexja.load_module 'stack'; local ltjs = luatexja.stack
13 luatexja.load_module 'jfont'; local ltjf = luatexja.jfont
14 luatexja.load_module 'direction'; local ltjd = luatexja.direction
15 luatexja.load_module 'setwidth'; local ltjw = luatexja.setwidth
16 luatexja.load_module 'lotf_aux'; local ltju = luatexja.lotf_aux
19 --local to_node = node.direct.tonode
20 --local to_direct = node.direct.todirect
22 local setfield = node.direct.setfield
23 local setglue = luatexja.setglue
24 local getfield = node.direct.getfield
25 local getid = node.direct.getid
26 local getfont = node.direct.getfont
27 local getlist = node.direct.getlist
28 local getchar = node.direct.getchar
29 local getsubtype = node.direct.getsubtype
32 local lang_ja = luatexja.lang_ja
33 local getlang = node.direct.getlang
34 -- glyph with font number 0 (\nullfont) is always considered an ALchar node
36 and function (n) return (getlang(n)==lang_ja)and(getfont(n)~=0) end
37 or function (n) return (getfield(n,'lang')==lang_ja)and(getfont(n)~=0) end
40 local has_attr = node.direct.has_attribute
41 local set_attr = node.direct.set_attribute
42 local insert_before = node.direct.insert_before
43 local insert_after = node.direct.insert_after
44 local node_next = node.direct.getnext
45 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
46 local ltjf_font_metric_table = ltjf.font_metric_table
47 local ltjf_find_char_class = ltjf.find_char_class
48 local node_new = node.direct.new
49 local node_copy = node.direct.copy
50 local node_tail = node.direct.tail
51 local node_free = node.direct.free
52 local node_remove = node.direct.remove
54 local id_glyph = node.id 'glyph'
55 local id_hlist = node.id 'hlist'
56 local id_vlist = node.id 'vlist'
57 local id_rule = node.id 'rule'
58 local id_ins = node.id 'ins'
59 local id_mark = node.id 'mark'
60 local id_adjust = node.id 'adjust'
61 local id_disc = node.id 'disc'
62 local id_whatsit = node.id 'whatsit'
63 local id_math = node.id 'math'
64 local id_glue = node.id 'glue'
65 local id_kern = node.id 'kern'
66 local id_penalty = node.id 'penalty'
68 local id_jglyph = 512 -- Japanese character
69 local id_box_like = 256 -- vbox, shifted hbox
70 local id_pbox = 257 -- already processed nodes (by \unhbox)
71 local id_pbox_w = 258 -- cluster which consists of a whatsit
72 local sid_user = node.subtype 'user_defined'
74 local ITALIC = luatexja.icflag_table.ITALIC
75 local PACKED = luatexja.icflag_table.PACKED
76 local KINSOKU = luatexja.icflag_table.KINSOKU
77 local FROM_JFM = luatexja.icflag_table.FROM_JFM
78 local PROCESSED = luatexja.icflag_table.PROCESSED
79 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
80 local BOXBDD = luatexja.icflag_table.BOXBDD
81 local SPECIAL_JAGLUE = luatexja.icflag_table.SPECIAL_JAGLUE
82 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
84 local attr_icflag = luatexbase.attributes['ltj@icflag']
87 local table_current_stack
92 local set_np_xspc_jachar, set_np_xspc_alchar
93 local set_np_xspc_jachar_hbox
95 local ltjs_orig_char_table = ltjs.orig_char_table
97 local function get_attr_icflag(p)
98 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
101 -------------------- Helper functions
103 -- This function is called only for acquiring `special' characters.
104 local function fast_find_char_class(c,m)
105 return m.chars[c] or 0
109 local slow_find_char_class
111 local start_time_measure = ltjb.start_time_measure
112 local stop_time_measure = ltjb.stop_time_measure
113 slow_find_char_class = function (c, m, oc)
114 local cls = ltjf_find_char_class(oc, m)
115 if oc~=c and c and cls==0 then
116 return ltjf_find_char_class(c, m)
123 local function skip_table_to_glue(n)
124 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
125 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
126 return g, (st.width==1073741823)
133 local setpenalty = node.direct.setpenalty or function(n, a) setfield(n,'penalty',a) end
134 local getpenalty = node.direct.getpenalty or function(n) return getfield(n,'penalty') end
135 function add_penalty(p,e)
136 local pp = getpenalty(p)
137 if (pp>-10000) and (pp<10000) then
138 if e>=10000 then setpenalty(p, 10000)
139 elseif e<=-10000 then setpenalty(p, -10000)
142 if pp>=10000 then setpenalty(p, 10000)
143 elseif pp<=-10000 then setpenalty(p, -10000)
144 else setpenalty(p, pp) end
151 luatexja.jfmglue.diffmet_rule = math.two_paverage
152 function math.two_add(a,b) return a+b end
153 function math.two_average(a,b) return (a+b)*0.5 end
154 function math.two_paverage(a,b) return (a+b)/2 end
155 function math.two_pleft(a,b) return a end
156 function math.two_pright(a,b) return b end
158 local head -- the head of current list
161 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
163 local non_ihb_flag -- JFM グルー挿入抑止用 flag
164 -- false: \inhibitglue 指定時 true: それ以外
166 -------------------- hlist 内の文字の検索
168 local first_char, last_char, find_first_char
171 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
172 local function check_box(box_ptr, box_end)
173 local p = box_ptr; local found_visible_node = false
175 find_first_char = false; last_char = nil
178 while p and p~=box_end do
180 if pid==id_kern and getsubtype(p)==2 then
181 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
183 if pid==id_glyph then
185 if find_first_char then first_char = p; find_first_char = false end
186 last_char = p; found_visible_node = true; p=node_next(p)
187 if (not p) or p==box_end then return found_visible_node end
188 until getid(p)~=id_glyph
189 pid = getid(p) -- p must be non-nil
192 local pa = get_attr_icflag(p)
193 if pa==IC_PROCESSED then
195 elseif getsubtype(p)==2 then
196 p = node_next(node_next(p));
197 -- Note that another node_next will be executed outside this if-statement.
199 found_visible_node = true
200 find_first_char = false; last_char = nil
202 elseif pid==id_hlist then
203 if PACKED == get_attr_icflag(p) then
204 local s = ltjd_glyph_from_packed(p)
205 if find_first_char then first_char = s; find_first_char = false end
206 last_char = s; found_visible_node = true
208 if getfield(p, 'shift')==0 then
210 if check_box(getlist(p), nil) then found_visible_node = true end
211 find_first_char = false
213 find_first_char = false; last_char = nil
216 elseif pid==id_math then
217 if find_first_char then first_char = p; find_first_char = false end
218 last_char = p; found_visible_node = true
219 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
221 elseif not (pid==id_ins or pid==id_mark
222 or pid==id_adjust or pid==id_whatsit
223 or pid==id_penalty) then
224 found_visible_node = true
225 find_first_char = false; last_char = nil
229 return found_visible_node
232 check_box_high = function (Nx, box_ptr, box_end)
233 first_char = nil; last_char = nil; find_first_char = true
234 if check_box(box_ptr, box_end) then
235 local first_char = first_char
237 if getid(first_char)==id_glyph then
238 if if_lang_ja(first_char) then
239 set_np_xspc_jachar_hbox(Nx, first_char)
241 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
244 set_np_xspc_alchar(Nx, -1,first_char)
251 -------------------- Np の計算と情報取得
253 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
254 function (Np, lp, Nq)
255 if Np.nuc then return Np
257 return Np -- your code
260 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
261 function (stat, Nq, Np) return false end)
262 luatexbase.create_callback("luatexja.jfmglue.whatsit_last_minute", "data",
263 function (stat, Nq, Np) return false end)
267 do -- 001 -----------------------------------------------
269 local traverse = node.direct.traverse
270 local function check_next_ickern(lp)
272 while lp and getid(lp) == id_kern and ( getsubtype(lp)==0 or
273 getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) do
274 set_attr(lp, attr_icflag, IC_PROCESSED)
275 lx, lp = lp, node_next(lp)
277 Np.last = lx; return lp
280 local function calc_np_pbox(lp, last)
281 local first, nc = (not Np.first), nil
282 --local lpa = get_attr_icflag(lp)==PACKED and PACKED or KINSOKU -- KINSOKU: dummy
283 local lpa = get_attr_icflag(lp)
284 Np.first = Np.first or lp; Np.id = id_pbox
285 set_attr(lp, attr_icflag, get_attr_icflag(lp))
286 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
287 local lpi = getid(lp)
289 if lpi==id_rule then lp = node_next(lp) end
290 nc, lp = lp, node_next(lp)
291 elseif lpi==id_hlist or lpi==id_vlist then
292 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
293 Np.first = first and nc or Np.first
295 nc, lp = lp, node_next(lp)
297 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
298 -- get_attr_icflag() ではいけない!
301 lp = check_next_ickern(lp)
302 Np.last_char = check_box_high(Np, Np.first, lp)
306 local calc_np_aux_glyph_common
307 do -- 002 ---------------------------------------
308 local min, max = math.min, math.max
309 local getwhd = node.direct.getwhd
310 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
311 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
312 local font_getfont = font.getfont
313 local function calc_np_notdef(lp)
314 if not font_getfont(getfont(lp)).characters[getchar(lp)] then
315 local ln = node_next(lp)
316 if ltju.specified_feature(getfont(lp), 'notdef') and ln and getid(ln)==id_glyph then
317 set_attr(lp, attr_icflag, PROCESSED)
318 set_attr(ln, attr_jchar_code, has_attr(lp, attr_jchar_code) or getchar(lp))
319 set_attr(ln, attr_jchar_class, has_attr(lp, attr_jchar_class) or 0)
325 function calc_np_aux_glyph_common(lp, acc_flag)
326 Np.nuc, Np.first = lp, (Np.first or lp)
327 if if_lang_ja(lp) then -- JAchar
329 local m, mc, cls = set_np_xspc_jachar(Np, lp)
331 local w, h, d = getwhd(lp)
332 if w==0 and h==0 and d==0 then lp = calc_np_notdef(lp) end
333 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
334 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
336 return true, check_next_ickern(lp);
339 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
341 local first_glyph, last_glyph = lp
342 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
343 local y_adjust = has_attr(lp,attr_ablshift) or 0
344 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
345 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
346 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust); lp = node_next(lp)
349 local lai = get_attr_icflag(lx)
350 if lx==last or lai>=PACKED then break
352 local lid = getid(lx)
353 if lid==id_glyph and not if_lang_ja(lx) then
355 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
356 y_adjust = has_attr(lx,attr_ablshift) or 0
357 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
358 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
359 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust); lx = node_next(lx)
360 elseif lid==id_kern then
361 local ls = getsubtype(lx)
362 if ls==2 then -- アクセント用の kern
363 set_attr(lx, attr_icflag, PROCESSED)
364 lx = node_next(lx) -- lx: アクセント本体
365 if getid(lx)==id_glyph then
366 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
367 else -- アクセントは上下にシフトされている
368 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
370 set_attr(lx, attr_icflag, PROCESSED)
371 lx = node_next(lx); set_attr(lx, attr_icflag, PROCESSED)
372 lx = node_next(lx); set_attr(lx, attr_icflag, PROCESSED)
374 Np.last = lx; lx = node_next(lx)
375 elseif (ls==3) or (lai==ITALIC) then
376 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED); lx = node_next(lx)
385 if adj_depth>node_depth then
386 r = node_new(id_rule,3)
387 setfield(r, 'width', 0); setfield(r, 'height', 0)
388 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
389 set_attr(r, attr_icflag, PROCESSED)
392 Np.last_char = last_glyph
393 if r then insert_after(head, first_glyph, r) end
398 local nf, nc = getfont(npn), getchar(npn)
399 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
400 if not ct then -- variation selector
402 elseif (ct.left_protruding or 0) == 0 then
403 head = insert_before(head, npn, r)
404 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
405 elseif (ct.right_protruding or 0) == 0 then
406 insert_after(head, npn, r); Np.last, lp = r, r
408 ltjb.package_warning_no_line(
410 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
411 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
412 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
420 end -- 002 ---------------------------------------
421 local calc_np_auxtable
422 do -- 002 ---------------------------------------
423 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
424 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
425 local node_end_of_math = node.direct.end_of_math
426 local dir_tate = luatexja.dir_table.dir_tate
427 local sid_start_link = node.subtype 'pdf_start_link'
428 local sid_start_thread = node.subtype 'pdf_start_thread'
429 local sid_end_link = node.subtype 'pdf_end_link'
430 local sid_end_thread = node.subtype 'pdf_end_thread'
432 [id_glyph] = calc_np_aux_glyph_common,
433 [id_hlist] = function(lp)
435 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
436 set_attr(op, attr_icflag, PROCESSED)
437 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
438 if (flag or getfield(op, 'shift')~=0) then
442 Np.last_char = check_box_high(Np, getlist(op), nil)
446 [id_vlist] = function(lp)
448 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
449 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
453 box_like = function(lp)
454 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
456 return true, node_next(lp)
458 [id_whatsit] = function(lp)
459 local lps = getsubtype(lp)
460 if lps==sid_user then
461 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
462 local lq = node_next(lp);
463 head = node_remove(head, lp); node_free(lp); non_ihb_flag = getfield(lp, 'value')~=1
465 elseif getfield(lp, 'user_id')==luatexja.userid_table.JA_AL_BDD then
466 local lq = node_next(lp);
467 head = node_remove(head, lp); node_free(lp)
470 set_attr(lp, attr_icflag, PROCESSED)
471 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
474 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
475 return true, node_next(lp)
477 return false, node_next(lp)
481 -- we do special treatment for these whatsit nodes.
482 if lps == sid_start_link or lps == sid_start_thread then
484 elseif lps == sid_end_link or lps == sid_end_thread then
485 Np.first, Nq.last = nil, lp;
487 set_attr(lp, attr_icflag, PROCESSED)
488 return false, node_next(lp)
491 [id_math] = function(lp)
492 Np.first, Np.nuc = (Np.first or lp), lp;
493 set_attr(lp, attr_icflag, PROCESSED)
494 set_np_xspc_alchar(Np, -1, lp)
495 local end_math = node_end_of_math(lp)
496 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
497 set_attr(end_math, attr_icflag, PROCESSED)
498 Np.last, Np.id = end_math, id_math;
499 return true, node_next(end_math);
501 [id_glue] = function(lp)
502 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
504 local f = luatexbase.call_callback("luatexja.jfmglue.special_jaglue", lp)
506 set_attr(lp, attr_icflag, PROCESSED)
508 return true, node_next(lp)
510 [id_disc] = function(lp)
511 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
512 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
513 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
514 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
515 return true, node_next(lp)
517 [id_kern] = function(lp)
518 if getsubtype(lp)==2 then
519 Np.first = Np.first or lp
520 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
521 if getid(lp)==id_glyph then -- アクセント本体
522 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
523 else -- アクセントは上下にシフトされている
524 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
526 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
527 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
528 set_attr(lp, attr_icflag, PROCESSED);
529 return calc_np_aux_glyph_common(lp, true)
531 Np.first = Np.first or lp
532 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
533 Np.last = lp; return true, node_next(lp)
536 [id_penalty] = function(lp)
537 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
538 return false, node_next(lp)
541 end -- 002 ---------------------------------------
542 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
543 calc_np_auxtable[15] = calc_np_auxtable.box_like
545 local function calc_np_aux_skip (lp)
546 set_attr(lp, attr_icflag, PROCESSED)
547 return false, node_next(lp)
550 function calc_np(last, lp)
552 -- We assume lp = node_next(Np.last)
553 if Nq and Nq.id==id_pbox_w then
554 luatexbase.call_callback("luatexja.jfmglue.whatsit_last_minute", false, Nq, Np)
556 Np, Nq, non_ihb_flag = Nq, Np, true
557 -- We clear `predefined' entries of Np before pairs() loop,
558 -- because using only pairs() loop is slower.
559 Np.post, Np.pre, Np.xspc, Np.gk = nil, nil, nil, nil
560 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
561 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
562 -- auto_kspc, auto_xspc: normally true/false,
563 -- but the number 0 when Np is ''the beginning of the box/paragraph''.
564 for k in pairs(Np) do Np[k] = nil end
566 for k = 1,#Bp do Bp[k] = nil end
568 local lpa = has_attr(lp, attr_icflag) or 0
570 if (lpa>=PACKED) and (lpa%PROCESSED_BEGIN_FLAG<=BOXBDD) then
571 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
572 local lq = node_next(lp)
573 head = node_remove(head, lp); node_free(lp); lp = lq
575 return calc_np_pbox(lp, last)
578 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
579 if k then return lp end
584 end -- 001 -----------------------------------------------
586 -- extract informations from Np
587 -- We think that "Np is a Japanese character" if Np.met~=nil,
588 -- "Np is an alphabetic character" if Np.pre~=nil,
589 -- "Np is not a character" otherwise.
590 local after_hlist = nil -- global
591 local after_alchar, extract_np
593 local PRE = luatexja.stack_table_index.PRE
594 local POST = luatexja.stack_table_index.POST
595 local KCAT = luatexja.stack_table_index.KCAT
596 local XSP = luatexja.stack_table_index.XSP
597 local dir_tate = luatexja.dir_table.dir_tate
600 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
601 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
602 local attr_autospc = luatexbase.attributes['ltj@autospc']
603 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
604 local getcomponents = node.direct.getcomponents
605 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
606 function set_np_xspc_jachar(Nx, x)
607 local m = ltjf_font_metric_table[getfont(x)]
608 local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
609 if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
611 local cls = slow_find_char_class(c, m, c_glyph)
612 Nx.met, Nx.class, Nx.char = m, cls, c;
613 local mc = m.char_type; Nx.char_type = mc
614 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
615 Nx.pre = table_current_stack[PRE + c] or 0
616 Nx.post = table_current_stack[POST + c] or 0
617 Nx.xspc = table_current_stack[XSP + c] or 3
618 Nx.kcat = table_current_stack[KCAT + c] or 0
619 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
622 function set_np_xspc_jachar_hbox(Nx, x)
623 local m = ltjf_font_metric_table[getfont(x)]
624 local c = has_attr(x, attr_jchar_code) or getchar(x)
625 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
626 local mc = m.char_type; Nx.char_type = mc
627 Nx.pre = table_current_stack[PRE + c] or 0
628 Nx.post = table_current_stack[POST + c] or 0
629 Nx.xspc = table_current_stack[XSP + c] or 3
630 Nx.kcat = table_current_stack[KCAT + c] or 0
631 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
635 local floor = math.floor
636 local nullfunc = function(n) return n end
637 function set_np_xspc_alchar(Nx, c,x, lig)
639 local f = (lig ==1) and nullfunc or node_tail
640 local xc, xs = getcomponents(x), getsubtype(x)
641 while xc and xs and xs%4>=2 do
643 if getid(x)==id_disc then x, xc, xs = nil, getfield(x,'replace'), 2
644 else xc, xs = getcomponents(x), getsubtype(x) end
646 c = x and getchar(x) or c
647 Nx.pre = table_current_stack[PRE + c] or 0
648 Nx.post = table_current_stack[POST + c] or 0
650 Nx.pre, Nx.post = 0, 0
653 Nx.xspc = table_current_stack[XSP + c] or 3
654 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
656 local set_np_xspc_alchar = set_np_xspc_alchar
657 -- change the information for the next loop
658 -- (will be done if Nx is an alphabetic character or a hlist)
659 after_hlist = function (Nx)
660 local s = Nx.last_char
662 if getid(s)==id_glyph then
663 if if_lang_ja(s) then
664 set_np_xspc_jachar_hbox(Nx, s)
666 set_np_xspc_alchar(Nx, getchar(s), s, 2)
669 set_np_xspc_alchar(Nx, -1, s)
672 Nx.pre, Nx.met = nil, nil
675 after_alchar = function (Nx)
676 local x = Nx.last_char
677 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
682 -------------------- 最下層の処理
684 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
686 -- change penalties (or create a new penalty, if needed)
687 local function handle_penalty_normal(post, pre, g)
688 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
689 local a = (pre or 0) + (post or 0)
691 if (a~=0 and not(g and getid(g)==id_kern)) then
692 local p = node_new(id_penalty)
693 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
694 setfield(p, 'penalty', a); head = insert_before(head, Np.first, p)
695 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
697 else for _, v in pairs(Bp) do add_penalty(v,a) end
701 local function handle_penalty_always(post, pre, g)
702 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
703 local a = (pre or 0) + (post or 0)
705 if not (g and getid(g)==id_glue) or a~=0 then
706 local p = node_new(id_penalty)
707 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
708 setfield(p, 'penalty', a); head = insert_before(head, Np.first, p)
709 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
711 else for _, v in pairs(Bp) do add_penalty(v,a) end
715 local function handle_penalty_suppress(post, pre, g)
716 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
718 if g and getid(g)==id_glue then
719 local p = node_new(id_penalty)
720 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
721 Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
724 local a = (pre or 0) + (post or 0)
725 for _, v in pairs(Bp) do add_penalty(v,a) end
729 local function handle_penalty_jwp()
730 local a = table_current_stack[luatexja.stack_table_index.JWP]
731 if #widow_Bp == 0 then
733 local p = node_new(id_penalty)
734 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
735 setfield(p, 'penalty', a); head = insert_before(head, widow_Np.first, p)
736 widow_Bp[1]=p; set_attr(p, attr_icflag, KINSOKU)
738 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
742 -- 和文文字間の JFM glue を node 化
743 local function new_jfm_glue(mc, bc, ac)
744 -- bc, ac: char classes
748 return node_copy(g[1]), g.ratio, false, false, false
750 local f = node_new(id_glue)
751 set_attr(f, attr_icflag, g.priority)
752 setglue(f, g.width, g.stretch, g.shrink)
753 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
759 -- Nq.last (kern w) .... (glue/kern g) Np.first
760 local function real_insert(g)
762 head = insert_before(head, Np.first, g)
765 if not ngk then Np.gk = g
766 elseif type(ngk)=="table" then ngk[#ngk+1]=g
767 else Np.gk = { ngk, g } end
772 -------------------- 和文文字間空白量の決定
775 local round = tex.round
776 local bg_ag = 2*id_glue - id_glue
777 local bg_ak = 2*id_glue - id_kern
778 local bk_ag = 2*id_kern - id_glue
779 local bk_ak = 2*id_kern - id_kern
781 local function blend_diffmet(b, a, rb, ra)
782 return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
784 local blend_diffmet_inf
786 local abs, log, log264, floor = math.abs, math.log, math.log(2)*64, math.floor
787 blend_diffmet_inf = function (b, a, bo, ao, rb, ra)
788 local nb, na = (bo and b*2.0^(64*bo) or 0), (ao and a*2.0^(64*ao) or 0)
789 local r = luatexja.jfmglue.diffmet_rule((1-rb)*nb+rb*na, (1-ra)*nb+ra*na)
790 local ro = (r~=0) and floor(log(abs(r))/log264+0.0625) or 0
791 return round(r/2.^(64*ro)), ro
794 local getglue = luatexja.getglue
795 calc_ja_ja_aux = function (gb, ga, db, da)
796 if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
797 and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
801 if ga then gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
804 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
806 local gbw, gaw, gbst, gast, gbsto, gasto, gbsh, gash, gbsho, gasho
807 if getid(gb)==id_glue then
808 gbw, gbst, gbsh, gbsto, gbsho = getglue(gb)
810 gbw = getfield(gb, 'kern')
812 if getid(ga)==id_glue then
813 gaw, gast, gash, gasto, gasho = getglue(ga)
815 gaw = getfield(ga, 'kern')
817 if not (gbst or gast) then -- 両方とも kern
818 setfield(gb, 'kern', blend_diffmet(gbw, gaw, db, da))
819 node_free(ga); return gb
822 if not gbst then gr = ga; node_free(gb) else node_free(ga) end
823 gbw = blend_diffmet(gbw or 0, gaw or 0, db, da) -- 結果の自然長
824 gbst, gbsto = blend_diffmet_inf(gbst, gast, gbsto, gasto, db, da) -- 伸び
825 gbsh, gbsho = blend_diffmet_inf(-(gbsh or 0), -(gash or 0), gbsho, gasho, db, da) -- -(縮み)
826 setglue(gr, gbw, gbst, -gbsh, gbsto, gbsho)
832 local null_skip_table = {0, 0, 0}
834 local get_kanjiskip, kanjiskip_jfm_flag
835 local get_kanjiskip_low
836 local calc_ja_ja_glue
838 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
839 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
841 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
842 -- flag = false: kanjiskip そのもの(パラメータ or JFM)
843 -- ノード kanji_skip のコピーで良い場合は nil が帰る
844 -- flag = true: JFM グルーに付随する kanjiskip 自然長/伸び/縮み分
845 if qm.with_kanjiskip and (bn or bp or bh) then
846 if kanjiskip_jfm_flag then
847 local g = node_new(id_glue);
848 local bk = qm.kanjiskip or null_skip_table
849 setglue(g, bn and (bn*bk[1]) or 0,
850 bp and (bp*bk[2]) or 0,
851 bh and (bh*bk[3]) or 0, 0, 0)
852 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
855 local g = node_new(id_glue)
856 local st = bp and (bp*getfield(kanji_skip, 'stretch')) or 0
857 local sh = bh and (bh*getfield(kanji_skip, 'shrink')) or 0
859 bn and (bn*getfield(kanji_skip, 'width')) or 0,
861 (st==0) and 0 or getfield(kanji_skip, 'stretch_order'),
862 (sh==0) and 0 or getfield(kanji_skip, 'shrink_order'))
863 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
869 get_kanjiskip = function()
870 if Np.auto_kspc==0 or Nq.auto_kspc==0 then return nil
871 elseif Np.auto_kspc or Nq.auto_kspc then
872 local pm, qm = Np.met, Nq.met
873 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
874 return get_kanjiskip_low(false, qm, 1, 1, 1) or node_copy(kanji_skip)
876 local gb = get_kanjiskip_low(false, qm, 1, 1, 1)
878 return calc_ja_ja_aux(gb,
879 get_kanjiskip_low(false, pm, 1, 1, 1) or node_copy(kanji_skip), 0, 1)
881 local ga = get_kanjiskip_low(false, pm, 1, 1, 1)
882 return (ga and calc_ja_ja_aux(node_copy(kanji_skip), ga, 0, 1))
883 or node_copy(kanji_skip)
887 local g = node_new(id_glue)
888 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
893 calc_ja_ja_glue = function ()
894 local qm, pm = Nq.met, Np.met
895 local qmc, pmc = qm.char_type, pm.char_type
896 if (qmc==pmc) and (qm.var==pm.var) then
897 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
898 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(true, qm, kn, kp, kh)
900 local npn, nqn = Np.nuc, Nq.nuc
901 local gb, db, bn, bp, bh
902 = new_jfm_glue(qmc, Nq.class,
903 slow_find_char_class(Np.char,
905 local ga, da, an, ap, ah
907 slow_find_char_class(Nq.char,
910 local g = calc_ja_ja_aux(gb, ga, db, da)
912 gb = get_kanjiskip_low(true, qm, bn, bp, bh)
913 ga = get_kanjiskip_low(true, pm, an, ap, ah)
914 k = calc_ja_ja_aux(gb, ga, db, da)
920 -------------------- 和欧文間空白量の決定
923 local get_xkanjiskip, xkanjiskip_jfm_flag
924 local get_xkanjiskip_normal, get_xkanjiskip_jfm
925 local get_xkanjiskip_low
927 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
928 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
930 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
931 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
932 if xkanjiskip_jfm_flag then
933 local g = node_new(id_glue);
934 local bk = qm.xkanjiskip or null_skip_table
935 setglue(g, bn and bk[1] or 0,
937 bh and bk[3] or 0, 0, 0)
938 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
941 return node_copy(xkanji_skip)
943 local g = node_new(id_glue);
945 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
946 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
947 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
948 bp and getfield(xkanji_skip, 'stretch_order') or 0,
949 bh and getfield(xkanji_skip, 'shrink_order') or 0)
950 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
956 get_xkanjiskip = function(Nn)
957 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
959 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
960 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
962 local g = node_new(id_glue)
963 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
969 -------------------- 隣接した「塊」間の処理
971 local function combine_spc(name)
972 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
975 -- NA, NB: alchar or math
976 local function get_NA_skip()
978 local g, _, kn, kp, kh = new_jfm_glue(
980 fast_find_char_class(
981 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
983 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc 'auto_xspc')
984 and get_xkanjiskip_low(false, pm, kn, kp, kh)
987 local function get_NB_skip()
989 local g, _, kn, kp, kh = new_jfm_glue(
990 qm.char_type, Nq.class,
991 fast_find_char_class(
992 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
994 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc 'auto_xspc')
995 and get_xkanjiskip_low(false, qm, kn, kp, kh)
999 local function get_OA_skip(insert_ksp)
1001 local g, _, kn, kp, kh = new_jfm_glue(
1003 fast_find_char_class(
1004 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
1008 k = (combine_spc 'auto_kspc') and get_kanjiskip_low(true, pm, kn, kp, kh)
1012 local function get_OB_skip(insert_ksp)
1014 local g, _, kn, kp, kh = new_jfm_glue(
1015 qm.char_type, Nq.class,
1016 fast_find_char_class(
1017 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
1020 k = (combine_spc 'auto_kspc') and get_kanjiskip_low(true, qm, kn, kp, kh)
1025 -- (anything) .. jachar
1026 local function handle_np_jachar(mode)
1028 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
1030 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
1031 if not g then g = get_kanjiskip() end
1032 handle_penalty_normal(Nq.post, Np.pre, g);
1033 real_insert(g); real_insert(k)
1034 elseif Nq.met then -- qid==id_hlist
1036 if non_ihb_flag then g, k = get_OA_skip(true) end -- O_A->K
1037 if not g then g = get_kanjiskip() end
1038 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1041 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1042 if not g then g = get_xkanjiskip(Np) end
1043 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1044 real_insert(g); real_insert(k)
1046 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1047 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1048 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1049 else handle_penalty_always(0, Np.pre, g)
1053 if mode and Np.kcat%2~=1 then
1054 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1059 -- jachar .. (anything)
1060 local function handle_nq_jachar()
1062 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1063 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1065 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1066 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1067 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1068 else handle_penalty_always(Nq.post, 0, g)
1074 -- (anything) .. (和文文字で始まる hlist)
1075 local function handle_np_ja_hlist()
1077 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1078 local g = non_ihb_flag and get_OB_skip(true) or get_kanjiskip() -- O_B->K
1079 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1080 elseif Nq.met then -- Nq.id==id_hlist
1081 local g = get_kanjiskip() -- K
1082 handle_penalty_suppress(0, 0, g); real_insert(g)
1084 local g = get_xkanjiskip(Np) -- X
1085 handle_penalty_suppress(0, 0, g); real_insert(g)
1089 -- (和文文字で終わる hlist) .. (anything)
1090 local function handle_nq_ja_hlist()
1092 local g = get_xkanjiskip(Nq) -- X
1093 handle_penalty_suppress(0, 0, g); real_insert(g)
1098 -- Nq が前側のクラスタとなることによる修正
1101 local adjust_nq_aux = {
1102 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1103 [id_hlist] = function() after_hlist(Nq) end,
1104 [id_pbox] = function() after_hlist(Nq) end,
1105 [id_disc] = function() after_hlist(Nq) end,
1106 [id_glue] = function()
1107 luatexbase.call_callback("luatexja.jfmglue.special_jaglue_after", Nq.nuc)
1109 [id_pbox_w]= function()
1110 luatexbase.call_callback("luatexja.jfmglue.whatsit_after", false, Nq, Np)
1114 adjust_nq = function()
1115 local x = adjust_nq_aux[Nq.id]
1121 -------------------- 開始・終了時の処理
1123 local node_prev = node.direct.getprev
1125 local function handle_list_tail(mode, last)
1128 -- the current list is to be line-breaked.
1129 -- Insert \jcharwidowpenalty
1130 if widow_Np.first then handle_penalty_jwp() end
1133 -- the current list is the contents of a hbox
1134 local npi, pm = Np.id, Np.met
1135 if npi == id_jglyph or (npi==id_pbox and pm) then
1136 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1138 set_attr(g, attr_icflag, BOXBDD)
1139 head = insert_after(head, Np.last, g)
1146 local function handle_list_head(par_indented)
1147 local npi, pm = Np.id, Np.met
1148 if npi == id_jglyph or (npi==id_pbox and pm) then
1149 if non_ihb_flag then
1150 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1152 set_attr(g, attr_icflag, BOXBDD)
1153 if getid(g)==id_glue and #Bp==0 then
1154 local h = node_new(id_penalty)
1155 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1157 head = insert_before(head, Np.first, g)
1164 -- return value: (the initial cursor lp), (last node)
1167 local id_local = node.id 'local_par'
1168 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1169 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1170 local KSK = luatexja.stack_table_index.KSK
1171 local XSK = luatexja.stack_table_index.XSK
1172 local dir_yoko = luatexja.dir_table.dir_yoko
1173 local dir_tate = luatexja.dir_table.dir_tate
1174 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1175 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1176 local table_pool = {
1177 {}, {}, {first=nil},
1178 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1179 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1180 post=nil, pre=nil, xspc=nil, gk=nil },
1181 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1182 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1183 post=nil, pre=nil, xspc=nil, gk=nil },
1185 init_var = function (mode,dir)
1186 -- 1073741823: max_dimen
1187 Bp, widow_Bp, widow_Np, Np, Nq
1188 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1189 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1190 table_current_stack = ltjs.table_current_stack
1192 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1193 local is_dir_tate = list_dir==dir_tate
1194 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1195 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1196 local TEMP = node_new(id_glue)
1197 -- TEMP is a dummy node, which will be freed at the end of the callback.
1198 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1201 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1202 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1206 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1207 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1211 -- the current list is to be line-breaked:
1212 -- hbox from \parindent is skipped.
1213 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1215 ((lpi==id_whatsit and lps~=sid_user)
1216 or ((lpi==id_hlist) and (lps==3))
1217 or (lpi==id_local)) do
1218 if (lpi==id_hlist) and (lps==3) then
1219 Np.char, par_indented = 'parbdd', 'parbdd'
1220 Np.width = getfield(lp, 'width')
1222 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1223 return lp, node_tail(head), par_indented, TEMP
1225 return head, nil, 'boxbdd', TEMP
1230 -------------------- 外部から呼ばれる関数
1232 local ensure_tex_attr = ltjb.ensure_tex_attr
1233 local tex_getattr = tex.getattribute
1235 function luatexja.jfmglue.main(ahead, mode, dir)
1236 if not ahead then return ahead end
1238 local lp, last, par_indented, TEMP = init_var(mode,dir)
1239 lp = calc_np(last, lp)
1241 handle_list_head(par_indented)
1242 lp = calc_np(last,lp);
1245 local pid, pm = Np.id, Np.met
1247 if pid == id_jglyph then
1248 handle_np_jachar(mode)
1250 if pid==id_hlist then handle_np_ja_hlist()
1251 else handle_np_jachar() end
1253 if Nq.id==id_hlist then handle_nq_ja_hlist()
1254 else handle_nq_jachar() end
1256 lp = calc_np(last,lp)
1258 handle_list_tail(mode, last)
1260 -- adjust attr_icflag for avoiding error
1261 if tex_getattr(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1262 node_free(kanji_skip);
1263 node_free(xkanji_skip); node_free(TEMP)
1269 local IHB = luatexja.userid_table.IHB
1270 local BPAR = luatexja.userid_table.BPAR
1271 local BOXB = luatexja.userid_table.BOXB
1272 local node_prev = node.direct.getprev
1273 local node_write = node.direct.write
1275 -- \inhibitglue, \disinhibitglue
1276 local function ihb_node(v)
1277 local tn = node_new(id_whatsit, sid_user)
1278 setfield(tn, 'user_id', IHB)
1279 setfield(tn, 'type', 100)
1280 setfield(tn, 'value', v)
1283 function luatexja.jfmglue.create_inhibitglue_node()
1286 function luatexja.jfmglue.create_disinhibitglue_node()
1290 -- Node for indicating beginning of a paragraph
1291 -- (for ltjsclasses)
1292 function luatexja.jfmglue.create_beginpar_node()
1293 local tn = node_new(id_whatsit, sid_user)
1294 setfield(tn, 'user_id', BPAR)
1295 setfield(tn, 'type', 100)
1296 setfield(tn, 'value', 1)
1300 -- Node for indicating a head/end of a box
1301 function luatexja.jfmglue.create_boxbdd_node()
1302 local tn = node_new(id_whatsit, sid_user)
1303 setfield(tn, 'user_id', BOXB)
1304 setfield(tn, 'type', 100)
1305 setfield(tn, 'value', 1)
1309 local function whatsit_callback(Np, lp, Nq)
1310 if Np and Np.nuc then return Np
1311 elseif Np and getfield(lp, 'user_id') == BPAR then
1312 Np.first = lp; Np.nuc = lp; Np.last = lp
1314 elseif Np and getfield(lp, 'user_id') == BOXB then
1315 Np.first = lp; Np.nuc = lp; Np.last = lp
1318 Np.class = fast_find_char_class('boxbdd', Nq.met)
1320 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1321 Np.auto_xspc, Np.auto_kspc = 0, 0
1329 local function whatsit_after_callback(s, Nq, Np)
1330 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1331 local x, y = node_prev(Nq.nuc), Nq.nuc
1332 Nq.first, Nq.nuc, Nq.last = x, x, x
1335 Nq.class = fast_find_char_class('parbdd', Np.met)
1337 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1338 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1340 head = node_remove(head, y)
1342 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1343 local x, y = node_prev(Nq.nuc), Nq.nuc
1344 Nq.first, Nq.nuc, Nq.last = x, x, x
1347 Nq.class = fast_find_char_class('boxbdd', Np.met)
1349 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1350 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1352 head = node_remove(head, y)
1358 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1359 "luatexja.beginpar.np_info", 1)
1360 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1361 "luatexja.beginpar.np_info_after", 1)
1365 local node_prev = node.direct.getprev
1366 local node_write = node.direct.write
1367 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1368 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
1369 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1370 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
1371 local XSK = luatexja.stack_table_index.XSK
1372 local KSK = luatexja.stack_table_index.KSK
1373 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1374 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1375 local getcount, abs, scan_keyword = tex.getcount, math.abs, token.scan_keyword
1376 local get_current_jfont
1378 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
1379 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
1380 local dir_tate = luatexja.dir_table.dir_tate
1381 local get_dir_count = ltjd.get_dir_count
1382 function get_current_jfont()
1383 return tex.getattribute((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)
1386 -- \insertxkanjiskip
1387 -- SPECIAL_JAGLUE のノード:
1388 -- * (X)KANJI_SKIP(_JFM): その場で値が決まっている
1389 -- * PROCESSED_BEGIN_FLAG + (X)KANJI_SKIP: 段落終了時に決める
1390 local function insert_k_skip_common(ind, name, ica, icb)
1391 if abs(tex.nest[tex.nest.ptr].mode) ~= ltjs.hmode then return end
1392 local g = node_new(id_glue); set_attr(g, attr_icflag, SPECIAL_JAGLUE)
1393 local is_late = scan_keyword("late")
1395 local st = ltjs.get_stack_skip(ind, getcount('ltj@@stack'))
1396 if st.width==1073741823 then
1397 local bk = ltjf_font_metric_table[get_current_jfont()][name]
1399 setglue(g, bk[1] or 0, bk[2] or 0, bk[3] or 0, 0, 0)
1401 set_attr(g, attr_yablshift, icb); node_write(g); return
1403 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
1404 set_attr(g, attr_yablshift, ica)
1406 set_attr(g, attr_yablshift, PROCESSED_BEGIN_FLAG + ica)
1407 set_attr(g, attr_tablshift, get_current_jfont())
1411 function luatexja.jfmglue.insert_xk_skip()
1412 insert_k_skip_common(XSK, "xkanjiskip", XKANJI_SKIP, XKANJI_SKIP_JFM)
1414 function luatexja.jfmglue.insert_k_skip()
1415 insert_k_skip_common(KSK, "kanjiskip", KANJI_SKIP, KANJI_SKIP_JFM)
1418 local getglue = luatexja.getglue
1419 local function special_jaglue(lx)
1420 local lxi = get_attr_icflag(lx)
1421 if lxi==SPECIAL_JAGLUE then
1422 non_ihb_flag = false; return false
1427 local function special_jaglue_after(lx)
1428 if get_attr_icflag(lx)==SPECIAL_JAGLUE then
1429 lxi=has_attr(lx, attr_yablshift)
1430 if lxi>=PROCESSED_BEGIN_FLAG then
1431 lxi = lxi%PROCESSED_BEGIN_FLAG
1432 if lxi == KANJI_SKIP then
1433 local w, st, sh, sto, sho = getglue(kanji_skip)
1434 if w~=1073741823 then
1435 setglue(lx, w, st, sh, sto, sho); set_attr(lx, attr_icflag, KANJI_SKIP)
1437 local m = ltjf_font_metric_table[has_attr(lx, attr_tablshift)]
1438 local bk = m.kanjiskip or null_skip_table
1439 setglue(lx, bk[1], bk[2], bk[3], 0, 0)
1440 set_attr(lx, attr_icflag, KANJI_SKIP_JFM)
1442 elseif lxi == XKANJI_SKIP then
1443 local w, st, sh, sto, sho = getglue(xkanji_skip)
1444 if w~=1073741823 then
1445 setglue(lx, w, st, sh, sto, sho); set_attr(lx, attr_icflag, XKANJI_SKIP)
1447 local m = ltjf_font_metric_table[has_attr(lx, attr_tablshift)]
1448 local bk = m.xkanjiskip or null_skip_table
1449 setglue(lx, bk[1], bk[2], bk[3], 0, 0)
1450 set_attr(lx, attr_icflag, XKANJI_SKIP_JFM)
1454 set_attr(lx, attr_icflag, lxi)
1457 if node_prev(lx) then
1458 local lxp = node_prev(lx)
1459 if lxp and getid(lxp)==id_penalty and get_attr_icflag(lxp)==KINSOKU then
1463 non_ihb_flag = false; return false
1467 luatexbase.create_callback("luatexja.jfmglue.special_jaglue", "list",
1469 luatexbase.create_callback("luatexja.jfmglue.special_jaglue_after", "list",
1470 special_jaglue_after)
1474 luatexja.jfmglue.after_hlist = after_hlist
1475 luatexja.jfmglue.check_box_high = check_box_high