2 -- luatexja/ltj-jfmglue.lua
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
18 --local to_node = node.direct.tonode
19 --local to_direct = node.direct.todirect
21 local setfield = node.direct.setfield
22 local setglue = luatexja.setglue
23 local getfield = node.direct.getfield
24 local getid = node.direct.getid
25 local getfont = node.direct.getfont
26 local getlist = node.direct.getlist
27 local getchar = node.direct.getchar
28 local getsubtype = node.direct.getsubtype
31 local lang_ja = luatexja.lang_ja
32 local getlang = node.direct.getlang
34 and function (n) return getlang(n)==lang_ja end
35 or function (n) return getfield(n,'lang')==lang_ja end
38 local has_attr = node.direct.has_attribute
39 local set_attr = node.direct.set_attribute
40 local insert_before = node.direct.insert_before
41 local insert_after = node.direct.insert_after
42 local node_next = node.direct.getnext
43 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
44 local ltjf_font_metric_table = ltjf.font_metric_table
45 local ltjf_find_char_class = ltjf.find_char_class
46 local node_new = node.direct.new
47 local node_copy = node.direct.copy
48 local node_tail = node.direct.tail
49 local node_free = node.direct.free
50 local node_remove = node.direct.remove
52 local id_glyph = node.id('glyph')
53 local id_hlist = node.id('hlist')
54 local id_vlist = node.id('vlist')
55 local id_rule = node.id('rule')
56 local id_ins = node.id('ins')
57 local id_mark = node.id('mark')
58 local id_adjust = node.id('adjust')
59 local id_disc = node.id('disc')
60 local id_whatsit = node.id('whatsit')
61 local id_math = node.id('math')
62 local id_glue = node.id('glue')
63 local id_kern = node.id('kern')
64 local id_penalty = node.id('penalty')
66 local id_jglyph = 512 -- Japanese character
67 local id_box_like = 256 -- vbox, shifted hbox
68 local id_pbox = 257 -- already processed nodes (by \unhbox)
69 local id_pbox_w = 258 -- cluster which consists of a whatsit
70 local sid_user = node.subtype('user_defined')
72 local ITALIC = luatexja.icflag_table.ITALIC
73 local PACKED = luatexja.icflag_table.PACKED
74 local KINSOKU = luatexja.icflag_table.KINSOKU
75 local FROM_JFM = luatexja.icflag_table.FROM_JFM
76 local PROCESSED = luatexja.icflag_table.PROCESSED
77 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
78 local BOXBDD = luatexja.icflag_table.BOXBDD
79 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
81 local attr_icflag = luatexbase.attributes['ltj@icflag']
84 local table_current_stack
89 local set_np_xspc_jachar, set_np_xspc_alchar
90 local set_np_xspc_jachar_hbox
92 local ltjs_orig_char_table = ltjs.orig_char_table
94 local function get_attr_icflag(p)
95 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
98 -------------------- Helper functions
100 -- This function is called only for acquiring `special' characters.
101 local function fast_find_char_class(c,m)
102 return m.chars[c] or 0
106 local slow_find_char_class
108 local start_time_measure = ltjb.start_time_measure
109 local stop_time_measure = ltjb.stop_time_measure
110 slow_find_char_class = function (c, m, oc)
111 local cls = ltjf_find_char_class(oc, m)
112 if oc~=c and c and cls==0 then
113 return ltjf_find_char_class(c, m)
120 local function skip_table_to_glue(n)
121 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
122 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
123 return g, (st.width==1073741823)
130 local setpenalty = node.direct.setpenalty or function(n, a) setfield(n,'penalty',a) end
131 local getpenalty = node.direct.getpenalty or function(n) return getfield(n,'penalty') end
132 function add_penalty(p,e)
133 local pp = getpenalty(p)
134 if (pp>-10000) and (pp<10000) then
135 if e>=10000 then setpenalty(p, 10000)
136 elseif e<=-10000 then setpenalty(p, -10000)
139 if pp>=10000 then setpenalty(p, 10000)
140 elseif pp<=-10000 then setpenalty(p, -10000)
141 else setpenalty(p, pp) end
148 luatexja.jfmglue.diffmet_rule = math.two_paverage
149 function math.two_add(a,b) return a+b end
150 function math.two_average(a,b) return (a+b)*0.5 end
151 function math.two_paverage(a,b) return (a+b)/2 end
152 function math.two_pleft(a,b) return a end
153 function math.two_pright(a,b) return b end
155 local head -- the head of current list
158 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
160 local non_ihb_flag -- JFM グルー挿入抑止用 flag
161 -- false: \inhibitglue 指定時 true: それ以外
163 -------------------- hlist 内の文字の検索
165 local first_char, last_char, find_first_char
168 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
169 local function check_box(box_ptr, box_end)
170 local p = box_ptr; local found_visible_node = false
172 find_first_char = false; last_char = nil
175 while p and p~=box_end do
177 if pid==id_kern and getsubtype(p)==2 then
178 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
180 if pid==id_glyph then
182 if find_first_char then
183 first_char = p; find_first_char = false
185 last_char = p; found_visible_node = true; p=node_next(p)
186 if (not p) or p==box_end then
187 return found_visible_node
189 until getid(p)~=id_glyph
190 pid = getid(p) -- p must be non-nil
193 local pa = get_attr_icflag(p)
194 if pa==IC_PROCESSED then
196 elseif getsubtype(p)==2 then
197 p = node_next(node_next(p));
198 -- Note that another node_next will be executed outside this if-statement.
200 found_visible_node = true
201 find_first_char = false; last_char = nil
203 elseif pid==id_hlist then
204 if PACKED == get_attr_icflag(p) then
205 local s = ltjd_glyph_from_packed(p)
206 if find_first_char then
207 first_char = s; find_first_char = false
209 last_char = s; found_visible_node = true
211 if getfield(p, 'shift')==0 then
213 if check_box(getlist(p), nil) then found_visible_node = true end
214 find_first_char = false
216 find_first_char = false; last_char = nil
219 elseif pid==id_math then
220 if find_first_char then
221 first_char = p; find_first_char = false
223 last_char = p; found_visible_node = true
224 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
226 elseif not (pid==id_ins or pid==id_mark
227 or pid==id_adjust or pid==id_whatsit
228 or pid==id_penalty) then
229 found_visible_node = true
230 find_first_char = false; last_char = nil
234 return found_visible_node
237 check_box_high = function (Nx, box_ptr, box_end)
238 first_char = nil; last_char = nil; find_first_char = true
239 if check_box(box_ptr, box_end) then
240 local first_char = first_char
242 if getid(first_char)==id_glyph then
243 if if_lang_ja(first_char) then
244 set_np_xspc_jachar_hbox(Nx, first_char)
246 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
249 set_np_xspc_alchar(Nx, -1,first_char)
256 -------------------- Np の計算と情報取得
258 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
259 function (Np, lp, Nq)
260 if Np.nuc then return Np
262 return Np -- your code
265 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
266 function (stat, Nq, Np) return false end)
272 local traverse = node.direct.traverse
273 local function check_next_ickern(lp)
275 while lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) do
276 set_attr(lp, attr_icflag, IC_PROCESSED);
277 lx, lp = lp, node_next(lp)
279 Np.last = lx; return lp
282 local function calc_np_pbox(lp, last)
283 local first, nc = (not Np.first), nil
284 --local lpa = get_attr_icflag(lp)==PACKED and PACKED or KINSOKU -- KINSOKU: dummy
285 local lpa = get_attr_icflag(lp)
286 Np.first = Np.first or lp; Np.id = id_pbox
287 set_attr(lp, attr_icflag, get_attr_icflag(lp));
288 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
289 local lpi = getid(lp)
291 if lpi==id_rule then lp = node_next(lp) end
292 nc, lp = lp, node_next(lp)
293 elseif lpi==id_hlist or lpi==id_vlist then
294 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
295 Np.first = first and nc or Np.first
297 nc, lp = lp, node_next(lp)
299 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
300 -- get_attr_icflag() ではいけない!
303 lp = check_next_ickern(lp)
304 Np.last_char = check_box_high(Np, Np.first, lp)
308 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
309 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
310 local min, max = math.min, math.max
311 local function calc_np_aux_glyph_common(lp, acc_flag)
313 Np.first= (Np.first or lp)
314 if if_lang_ja(lp) then
316 local m, mc, cls = set_np_xspc_jachar(Np, lp)
318 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
319 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
321 return true, check_next_ickern(lp);
324 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
326 local first_glyph, last_glyph = lp
327 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
328 local y_adjust = has_attr(lp,attr_ablshift) or 0
329 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
330 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
331 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
333 for lx in traverse(lp) do
334 local lai = get_attr_icflag(lx)
335 if lx==last or lai>=PACKED then
338 local lid = getid(lx)
339 if lid==id_glyph and not if_lang_ja(lx) then
341 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
342 y_adjust = has_attr(lx,attr_ablshift) or 0
343 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
344 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
345 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
346 elseif lid==id_kern then
347 local ls = getsubtype(lx)
348 if ls==2 then -- アクセント用の kern
349 set_attr(lx, attr_icflag, PROCESSED)
350 lx = node_next(lx) -- lx: アクセント本体
351 if getid(lx)==id_glyph then
352 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
353 else -- アクセントは上下にシフトされている
354 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
356 lx = node_next(node_next(lx))
359 elseif (ls==3) or (lai==ITALIC) then
360 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
370 if adj_depth>node_depth then
371 r = node_new(id_rule,3)
372 setfield(r, 'width', 0); setfield(r, 'height', 0)
373 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
374 set_attr(r, attr_icflag, PROCESSED)
377 Np.last_char = last_glyph
378 if r then insert_after(head, first_glyph, r) end
383 local nf, nc = getfont(npn), getchar(npn)
384 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
385 if not ct then -- variation selector
387 elseif (ct.left_protruding or 0) == 0 then
388 head = insert_before(head, npn, r)
389 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
390 elseif (ct.right_protruding or 0) == 0 then
391 insert_after(head, npn, r); Np.last, lp = r, r
393 ltjb.package_warning_no_line(
395 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
396 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
397 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
405 local calc_np_auxtable
407 local node_end_of_math = node.direct.end_of_math
408 local dir_tate = luatexja.dir_table.dir_tate
409 local sid_start_link = node.subtype('pdf_start_link')
410 local sid_start_thread = node.subtype('pdf_start_thread')
411 local sid_end_link = node.subtype('pdf_end_link')
412 local sid_end_thread = node.subtype('pdf_end_thread')
414 [id_glyph] = calc_np_aux_glyph_common,
415 [id_hlist] = function(lp)
417 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
418 set_attr(op, attr_icflag, PROCESSED)
419 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
420 if (flag or getfield(op, 'shift')~=0) then
424 Np.last_char = check_box_high(Np, getlist(op), nil)
428 [id_vlist] = function(lp)
430 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
431 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
435 box_like = function(lp)
436 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
438 return true, node_next(lp)
440 [id_whatsit] = function(lp)
441 local lps = getsubtype(lp)
442 if lps==sid_user then
443 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
444 local lq = node_next(lp);
445 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
448 set_attr(lp, attr_icflag, PROCESSED)
449 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
452 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
453 return true, node_next(lp)
455 return false, node_next(lp)
459 -- we do special treatment for these whatsit nodes.
460 if lps == sid_start_link or lps == sid_start_thread then
462 elseif lps == sid_end_link or lps == sid_end_thread then
463 Np.first, Nq.last = nil, lp;
465 set_attr(lp, attr_icflag, PROCESSED)
466 return false, node_next(lp)
469 [id_math] = function(lp)
470 Np.first, Np.nuc = (Np.first or lp), lp;
471 set_attr(lp, attr_icflag, PROCESSED)
472 set_np_xspc_alchar(Np, -1, lp)
473 local end_math = node_end_of_math(lp)
474 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
475 set_attr(end_math, attr_icflag, PROCESSED)
476 Np.last, Np.id = end_math, id_math;
477 return true, node_next(end_math);
479 [id_glue] = function(lp)
480 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
481 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
482 return true, node_next(lp)
484 [id_disc] = function(lp)
485 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
486 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
487 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
488 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
489 return true, node_next(lp)
491 [id_kern] = function(lp)
492 if getsubtype(lp)==2 then
493 Np.first = Np.first or lp
494 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
495 if getid(lp)==id_glyph then -- アクセント本体
496 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
497 else -- アクセントは上下にシフトされている
498 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
500 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
501 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
502 set_attr(lp, attr_icflag, PROCESSED);
503 return calc_np_aux_glyph_common(lp, true)
505 Np.first = Np.first or lp
506 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
507 Np.last = lp; return true, node_next(lp)
510 [id_penalty] = function(lp)
511 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
512 return false, node_next(lp)
516 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
517 calc_np_auxtable[15] = calc_np_auxtable.box_like
519 local function calc_np_aux_skip (lp)
520 set_attr(lp, attr_icflag, PROCESSED)
521 return false, node_next(lp)
524 function calc_np(last, lp)
526 -- We assume lp = node_next(Np.last)
527 Np, Nq, non_ihb_flag = Nq, Np, true
528 -- We clear `predefined' entries of Np before pairs() loop,
529 -- because using only pairs() loop is slower.
530 Np.post, Np.pre, Np.xspc = nil, nil, nil
531 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
532 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
533 for k in pairs(Np) do Np[k] = nil end
535 for k = 1,#Bp do Bp[k] = nil end
537 local lpa = has_attr(lp, attr_icflag) or 0
540 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
541 local lq = node_next(lp)
542 head = node_remove(head, lp); node_free(lp); lp = lq
544 return calc_np_pbox(lp, last)
547 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
548 if k then return lp end
555 -- extract informations from Np
556 -- We think that "Np is a Japanese character" if Np.met~=nil,
557 -- "Np is an alphabetic character" if Np.pre~=nil,
558 -- "Np is not a character" otherwise.
559 local after_hlist = nil -- global
560 local after_alchar, extract_np
562 local PRE = luatexja.stack_table_index.PRE
563 local POST = luatexja.stack_table_index.POST
564 local KCAT = luatexja.stack_table_index.KCAT
565 local XSP = luatexja.stack_table_index.XSP
566 local dir_tate = luatexja.dir_table.dir_tate
569 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
570 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
571 local attr_autospc = luatexbase.attributes['ltj@autospc']
572 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
573 local getcomponents = node.direct.getcomponents
574 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
575 function set_np_xspc_jachar(Nx, x)
576 local m = ltjf_font_metric_table[getfont(x)]
577 local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
578 if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
580 local cls = slow_find_char_class(c, m, c_glyph)
581 Nx.met, Nx.class, Nx.char = m, cls, c;
582 local mc = m.char_type; Nx.char_type = mc
583 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
584 Nx.pre = table_current_stack[PRE + c] or 0
585 Nx.post = table_current_stack[POST + c] or 0
586 Nx.xspc = table_current_stack[XSP + c] or 3
587 Nx.kcat = table_current_stack[KCAT + c] or 0
588 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
591 function set_np_xspc_jachar_hbox(Nx, x)
592 local m = ltjf_font_metric_table[getfont(x)]
593 local c = has_attr(x, attr_jchar_code) or getchar(x)
594 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
595 local mc = m.char_type; Nx.char_type = mc
596 Nx.pre = table_current_stack[PRE + c] or 0
597 Nx.post = table_current_stack[POST + c] or 0
598 Nx.xspc = table_current_stack[XSP + c] or 3
599 Nx.kcat = table_current_stack[KCAT + c] or 0
600 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
604 local floor = math.floor
605 local nullfunc = function(n) return n end
606 function set_np_xspc_alchar(Nx, c,x, lig)
608 local f = (lig ==1) and nullfunc or node_tail
609 local xc, xs = getcomponents(x), getsubtype(x)
610 while xc and xs and xs%4>=2 do
611 x = f(xc); xc, xs = getcomponents(x), getsubtype(x)
614 Nx.pre = table_current_stack[PRE + c] or 0
615 Nx.post = table_current_stack[POST + c] or 0
617 Nx.pre, Nx.post = 0, 0
620 Nx.xspc = table_current_stack[XSP + c] or 3
621 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
623 local set_np_xspc_alchar = set_np_xspc_alchar
625 -- change the information for the next loop
626 -- (will be done if Nx is an alphabetic character or a hlist)
627 after_hlist = function (Nx)
628 local s = Nx.last_char
630 if getid(s)==id_glyph then
631 if if_lang_ja(s) then
632 set_np_xspc_jachar_hbox(Nx, s)
634 set_np_xspc_alchar(Nx, getchar(s), s, 2)
637 set_np_xspc_alchar(Nx, -1, s)
640 Nx.pre, Nx.met = nil, nil
644 after_alchar = function (Nx)
645 local x = Nx.last_char
646 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
651 -------------------- 最下層の処理
653 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
655 -- change penalties (or create a new penalty, if needed)
656 local function handle_penalty_normal(post, pre, g)
657 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
658 local a = (pre or 0) + (post or 0)
660 if (a~=0 and not(g and getid(g)==id_kern)) then
661 local p = node_new(id_penalty)
662 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
663 setfield(p, 'penalty', a)
664 head = insert_before(head, Np.first, p)
666 set_attr(p, attr_icflag, KINSOKU)
668 else for _, v in pairs(Bp) do add_penalty(v,a) end
672 local function handle_penalty_always(post, pre, g)
673 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
674 local a = (pre or 0) + (post or 0)
676 if not (g and getid(g)==id_glue) or a~=0 then
677 local p = node_new(id_penalty)
678 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
679 setfield(p, 'penalty', a)
680 head = insert_before(head, Np.first, p)
682 set_attr(p, attr_icflag, KINSOKU)
684 else for _, v in pairs(Bp) do add_penalty(v,a) end
688 local function handle_penalty_suppress(post, pre, g)
689 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
691 if g and getid(g)==id_glue then
692 local p = node_new(id_penalty)
693 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
695 set_attr(p, attr_icflag, KINSOKU)
698 local a = (pre or 0) + (post or 0)
699 for _, v in pairs(Bp) do add_penalty(v,a) end
703 local function handle_penalty_jwp()
704 local a = table_current_stack[luatexja.stack_table_index.JWP]
705 if #widow_Bp == 0 then
707 local p = node_new(id_penalty)
708 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
709 setfield(p, 'penalty', a)
710 head = insert_before(head, widow_Np.first, p)
712 set_attr(p, attr_icflag, KINSOKU)
714 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
718 -- 和文文字間の JFM glue を node 化
719 local function new_jfm_glue(mc, bc, ac)
720 -- bc, ac: char classes
724 return node_copy(g[1]), g.ratio, false, false, false
726 local f = node_new(id_glue)
727 set_attr(f, attr_icflag, g.priority)
728 setglue(f, g.width, g.stretch, g.shrink)
729 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
735 -- Nq.last (kern w) .... (glue/kern g) Np.first
736 local function real_insert(g)
738 head = insert_before(head, Np.first, g)
744 -------------------- 和文文字間空白量の決定
747 local round = tex.round
748 local bg_ag = 2*id_glue - id_glue
749 local bg_ak = 2*id_glue - id_kern
750 local bk_ag = 2*id_kern - id_glue
751 local bk_ak = 2*id_kern - id_kern
753 local function blend_diffmet(b, a, rb, ra)
754 return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
756 calc_ja_ja_aux = function (gb, ga, db, da)
757 if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
758 and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
763 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
766 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
769 local k = 2*getid(gb) - getid(ga)
772 setglue(gb, blend_diffmet(
773 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
775 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
777 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
780 elseif k == bk_ak then
782 setfield(gb, 'kern', blend_diffmet(
783 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
786 elseif k == bk_ag then
787 -- gb: kern, ga: glue
788 setglue(ga, blend_diffmet(
789 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
791 0, getfield(ga, 'stretch'), db, da),
793 0, -getfield(ga, 'shrink'), db, da))
797 -- gb: glue, ga: kern
798 setglue(gb, blend_diffmet(
799 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
801 getfield(gb, 'stretch'), 0, db, da),
803 -getfield(gb, 'shrink'), 0, db, da))
810 local null_skip_table = {0, 0, 0}
812 local get_kanjiskip, kanjiskip_jfm_flag
813 local get_kanjiskip_low
814 local calc_ja_ja_glue
816 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
817 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
819 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
820 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
821 if kanjiskip_jfm_flag then
822 local g = node_new(id_glue);
823 local bk = qm.kanjiskip or null_skip_table
824 setglue(g, bn and (bn*bk[1]) or 0,
825 bp and (bp*bk[2]) or 0,
826 bh and (bh*bk[3]) or 0, 0, 0)
827 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
830 return node_copy(kanji_skip)
832 local g = node_new(id_glue);
834 bn and (bn*getfield(kanji_skip, 'width')) or 0,
835 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
836 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
838 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
844 get_kanjiskip = function()
845 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
847 elseif Np.auto_kspc or Nq.auto_kspc then
848 local pm, qm = Np.met, Nq.met
849 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
850 return get_kanjiskip_low(true, qm, 1, 1, 1)
852 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
853 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
854 return calc_ja_ja_aux(gb, ga, 0, 1)
857 local g = node_new(id_glue)
858 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
863 calc_ja_ja_glue = function ()
864 local qm, pm = Nq.met, Np.met
865 local qmc, pmc = qm.char_type, pm.char_type
866 if (qmc==pmc) and (qm.var==pm.var) then
867 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
868 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
870 local npn, nqn = Np.nuc, Nq.nuc
871 local gb, db, bn, bp, bh
872 = new_jfm_glue(qmc, Nq.class,
873 slow_find_char_class(Np.char,
875 local ga, da, an, ap, ah
877 slow_find_char_class(Nq.char,
880 local g = calc_ja_ja_aux(gb, ga, db, da)
882 if (pmc==qmc) and (qm.var==pm.var) then
883 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
884 ga = get_kanjiskip_low(false, pm, an, ap, ah)
885 k = calc_ja_ja_aux(gb, ga, db, da)
892 -------------------- 和欧文間空白量の決定
895 local get_xkanjiskip, xkanjiskip_jfm_flag
896 local get_xkanjiskip_normal, get_xkanjiskip_jfm
897 local get_xkanjiskip_low
899 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
900 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
902 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
903 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
904 if xkanjiskip_jfm_flag then
905 local g = node_new(id_glue);
906 local bk = qm.xkanjiskip or null_skip_table
907 setglue(g, bn and bk[1] or 0,
909 bh and bk[3] or 0, 0, 0)
910 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
913 return node_copy(xkanji_skip)
915 local g = node_new(id_glue);
917 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
918 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
919 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
921 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
927 get_xkanjiskip = function(Nn)
928 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
930 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
931 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
933 local g = node_new(id_glue)
934 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
940 -------------------- 隣接した「塊」間の処理
942 local function combine_spc(name)
943 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
946 -- NA, NB: alchar or math
947 local function get_NA_skip()
949 local g, _, kn, kp, kh = new_jfm_glue(
951 fast_find_char_class(
952 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
954 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
955 and get_xkanjiskip_low(false, pm, kn, kp, kh)
958 local function get_NB_skip()
960 local g, _, kn, kp, kh = new_jfm_glue(
961 qm.char_type, Nq.class,
962 fast_find_char_class(
963 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
965 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
966 and get_xkanjiskip_low(false, qm, kn, kp, kh)
970 local function get_OA_skip(is_kanji)
972 local g, _, kn, kp, kh = new_jfm_glue(
974 fast_find_char_class(
975 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
979 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
983 local function get_OB_skip(is_kanji)
985 local g, _, kn, kp, kh = new_jfm_glue(
986 qm.char_type, Nq.class,
987 fast_find_char_class(
988 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
991 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
996 -- (anything) .. jachar
997 local function handle_np_jachar(mode)
999 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
1001 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
1002 if not g then g = get_kanjiskip() end
1003 handle_penalty_normal(Nq.post, Np.pre, g);
1004 real_insert(g); real_insert(k)
1005 elseif Nq.met then -- qid==id_hlist
1007 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
1008 if not g then g = get_kanjiskip() end
1009 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1012 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1013 if not g then g = get_xkanjiskip(Np) end
1014 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1015 real_insert(g); real_insert(k)
1017 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1018 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1019 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1020 else handle_penalty_always(0, Np.pre, g)
1024 if mode and Np.kcat%2~=1 then
1025 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1030 -- jachar .. (anything)
1031 local function handle_nq_jachar()
1033 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1034 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1036 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1037 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1038 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1039 else handle_penalty_always(Nq.post, 0, g)
1045 -- (anything) .. (和文文字で始まる hlist)
1046 local function handle_np_ja_hlist()
1048 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1049 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1050 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1051 elseif Nq.met then -- Nq.id==id_hlist
1052 local g = get_kanjiskip() -- K
1053 handle_penalty_suppress(0, 0, g); real_insert(g)
1055 local g = get_xkanjiskip(Np) -- X
1056 handle_penalty_suppress(0, 0, g); real_insert(g)
1060 -- (和文文字で終わる hlist) .. (anything)
1061 local function handle_nq_ja_hlist()
1063 local g = get_xkanjiskip(Nq) -- X
1064 handle_penalty_suppress(0, 0, g); real_insert(g)
1069 -- Nq が前側のクラスタとなることによる修正
1072 local adjust_nq_aux = {
1073 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1074 [id_hlist] = function() after_hlist(Nq) end,
1075 [id_pbox] = function() after_hlist(Nq) end,
1076 [id_disc] = function() after_hlist(Nq) end,
1077 [id_pbox_w] = function()
1078 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1083 adjust_nq=function()
1084 local x = adjust_nq_aux[Nq.id]
1090 -------------------- 開始・終了時の処理
1092 local node_prev = node.direct.getprev
1094 local function handle_list_tail(mode, last)
1097 -- the current list is to be line-breaked.
1098 -- Insert \jcharwidowpenalty
1099 if widow_Np.first then handle_penalty_jwp() end
1102 -- the current list is the contents of a hbox
1103 local npi, pm = Np.id, Np.met
1104 if npi == id_jglyph or (npi==id_pbox and pm) then
1105 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1107 set_attr(g, attr_icflag, BOXBDD)
1108 head = insert_after(head, Np.last, g)
1115 local function handle_list_head(par_indented)
1116 local npi, pm = Np.id, Np.met
1117 if npi == id_jglyph or (npi==id_pbox and pm) then
1118 if non_ihb_flag then
1119 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1121 set_attr(g, attr_icflag, BOXBDD)
1122 if getid(g)==id_glue and #Bp==0 then
1123 local h = node_new(id_penalty)
1124 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1126 head = insert_before(head, Np.first, g)
1133 -- return value: (the initial cursor lp), (last node)
1136 local id_local = node.id('local_par')
1137 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1138 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1139 local KSK = luatexja.stack_table_index.KSK
1140 local XSK = luatexja.stack_table_index.XSK
1141 local dir_yoko = luatexja.dir_table.dir_yoko
1142 local dir_tate = luatexja.dir_table.dir_tate
1143 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1144 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1145 local table_pool = {
1146 {}, {}, {first=nil},
1147 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1148 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1149 post=nil, pre=nil, xspc=nil, },
1150 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1151 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1152 post=nil, pre=nil, xspc=nil, },
1154 init_var = function (mode,dir)
1155 -- 1073741823: max_dimen
1156 Bp, widow_Bp, widow_Np, Np, Nq
1157 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1158 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1159 table_current_stack = ltjs.table_current_stack
1161 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1162 local is_dir_tate = list_dir==dir_tate
1163 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1164 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1165 local TEMP = node_new(id_glue)
1166 -- TEMP is a dummy node, which will be freed at the end of the callback.
1167 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1170 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1171 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1175 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1176 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1180 -- the current list is to be line-breaked:
1181 -- hbox from \parindent is skipped.
1182 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1184 ((lpi==id_whatsit and lps~=sid_user)
1185 or ((lpi==id_hlist) and (lps==3))
1186 or (lpi==id_local)) do
1187 if (lpi==id_hlist) and (lps==3) then
1188 Np.char, par_indented = 'parbdd', 'parbdd'
1189 Np.width = getfield(lp, 'width')
1191 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1192 return lp, node_tail(head), par_indented, TEMP
1194 return head, nil, 'boxbdd', TEMP
1199 local ensure_tex_attr = ltjb.ensure_tex_attr
1200 local function cleanup(mode, TEMP)
1201 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1202 -- adjust attr_icflag for avoiding error
1203 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1204 node_free(kanji_skip);
1205 node_free(xkanji_skip); node_free(TEMP)
1208 local h = node_next(head)
1209 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1211 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1218 -------------------- 外部から呼ばれる関数
1221 function luatexja.jfmglue.main(ahead, mode, dir)
1222 if not ahead then return ahead end
1223 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1226 local lp, last, par_indented, TEMP = init_var(mode,dir)
1227 lp = calc_np(last, lp)
1229 handle_list_head(par_indented)
1230 lp = calc_np(last,lp);
1233 local pid, pm = Np.id, Np.met
1235 if pid == id_jglyph then
1236 handle_np_jachar(mode)
1238 if pid==id_hlist then handle_np_ja_hlist()
1239 else handle_np_jachar() end
1241 if Nq.id==id_hlist then handle_nq_ja_hlist()
1242 else handle_nq_jachar() end
1244 lp = calc_np(last,lp)
1246 handle_list_tail(mode, last)
1248 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1250 return cleanup(mode, TEMP)
1255 local IHB = luatexja.userid_table.IHB
1256 local BPAR = luatexja.userid_table.BPAR
1257 local BOXB = luatexja.userid_table.BOXB
1258 local node_prev = node.direct.getprev
1259 local node_write = node.direct.write
1262 function luatexja.jfmglue.create_inhibitglue_node()
1263 local tn = node_new(id_whatsit, sid_user)
1264 setfield(tn, 'user_id', IHB)
1265 setfield(tn, 'type', 100)
1266 setfield(tn, 'value', 1)
1270 -- Node for indicating beginning of a paragraph
1271 -- (for ltjsclasses)
1272 function luatexja.jfmglue.create_beginpar_node()
1273 local tn = node_new(id_whatsit, sid_user)
1274 setfield(tn, 'user_id', BPAR)
1275 setfield(tn, 'type', 100)
1276 setfield(tn, 'value', 1)
1280 -- Node for indicating a head/end of a box
1281 function luatexja.jfmglue.create_boxbdd_node()
1282 local tn = node_new(id_whatsit, sid_user)
1283 setfield(tn, 'user_id', BOXB)
1284 setfield(tn, 'type', 100)
1285 setfield(tn, 'value', 1)
1289 local function whatsit_callback(Np, lp, Nq)
1290 if Np and Np.nuc then return Np
1291 elseif Np and getfield(lp, 'user_id') == BPAR then
1292 Np.first = lp; Np.nuc = lp; Np.last = lp
1294 elseif Np and getfield(lp, 'user_id') == BOXB then
1295 Np.first = lp; Np.nuc = lp; Np.last = lp
1298 Np.class = fast_find_char_class('boxbdd', Nq.met)
1300 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1301 Np.auto_xspc, Np.auto_kspc = 0, 0
1309 local function whatsit_after_callback(s, Nq, Np)
1310 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1311 local x, y = node_prev(Nq.nuc), Nq.nuc
1312 Nq.first, Nq.nuc, Nq.last = x, x, x
1315 Nq.class = fast_find_char_class('parbdd', Np.met)
1317 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1318 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1320 head = node_remove(head, y)
1322 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1323 local x, y = node_prev(Nq.nuc), Nq.nuc
1324 Nq.first, Nq.nuc, Nq.last = x, x, x
1327 Nq.class = fast_find_char_class('boxbdd', Np.met)
1329 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1330 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1332 head = node_remove(head, y)
1338 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1339 "luatexja.beginpar.np_info", 1)
1340 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1341 "luatexja.beginpar.np_info_after", 1)
1345 luatexja.jfmglue.after_hlist = after_hlist
1346 luatexja.jfmglue.check_box_high = check_box_high