2 -- luatexja/ltj-jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues and kanjiskip',
9 module('luatexja.jfmglue', package.seeall)
10 local err, warn, info, log = luatexbase .errwarinf(_NAME)
12 luatexja.load_module('base'); local ltjb = luatexja.base
13 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('direction'); local ltjd = luatexja.direction
16 luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
19 local nullfunc = function(n) return n end
20 local to_node = node.direct.tonode
21 local to_direct = node.direct.todirect
23 local setfield = node.direct.setfield
24 local setglue = luatexja.setglue
25 local getfield = node.direct.getfield
26 local getid = node.direct.getid
27 local getfont = node.direct.getfont
28 local getlist = node.direct.getlist
29 local getchar = node.direct.getchar
30 local getsubtype = node.direct.getsubtype
33 local lang_ja = luatexja.lang_ja
34 local getlang = node.direct.getlang
36 and function (n) return getlang(n)==lang_ja end
37 or function (n) return getfield(n,'lang')==lang_ja 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 PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
83 local attr_icflag = luatexbase.attributes['ltj@icflag']
86 local table_current_stack
91 local set_np_xspc_jachar
92 local set_np_xspc_jachar_hbox
94 local ltjs_orig_char_table = ltjs.orig_char_table
96 local function get_attr_icflag(p)
97 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
100 -------------------- Helper functions
102 -- This function is called only for acquiring `special' characters.
103 local function fast_find_char_class(c,m)
104 return m.chars[c] or 0
108 local slow_find_char_class
110 local start_time_measure = ltjb.start_time_measure
111 local stop_time_measure = ltjb.stop_time_measure
112 slow_find_char_class = function (c, m, oc)
113 local cls = ltjf_find_char_class(oc, m)
114 if oc~=c and c and cls==0 then
115 return ltjf_find_char_class(c, m)
122 local function skip_table_to_glue(n)
123 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
124 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
125 return g, (st.width==1073741823)
130 local function add_penalty(p,e)
131 local pp = getfield(p, 'penalty')
133 if e<=-10000 then setfield(p, 'penalty', 0) end
134 elseif pp<=-10000 then
135 if e>=10000 then setfield(p, 'penalty', 0) end
138 if pp>=10000 then setfield(p, 'penalty', 10000)
139 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
140 else setfield(p, 'penalty', pp) end
145 diffmet_rule = math.two_paverage
146 function math.two_add(a,b) return a+b end
147 function math.two_average(a,b) return (a+b)*0.5 end
148 function math.two_paverage(a,b) return (a+b)/2 end
149 function math.two_pleft(a,b) return a end
150 function math.two_pright(a,b) return b end
152 local head -- the head of current list
155 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
157 local non_ihb_flag -- JFM グルー挿入抑止用 flag
158 -- false: \inhibitglue 指定時 true: それ以外
160 -------------------- hlist 内の文字の検索
162 local first_char, last_char, find_first_char
164 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
165 local function check_box(box_ptr, box_end)
166 local p = box_ptr; local found_visible_node = false
168 find_first_char = false; last_char = nil
171 while p and p~=box_end do
173 if pid==id_kern and getsubtype(p)==2 then
174 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
176 if pid==id_glyph then
178 if find_first_char then
179 first_char = p; find_first_char = false
181 last_char = p; found_visible_node = true; p=node_next(p)
182 if (not p) or p==box_end then
183 return found_visible_node
185 until getid(p)~=id_glyph
186 pid = getid(p) -- p must be non-nil
189 local pa = get_attr_icflag(p)
190 if pa==IC_PROCESSED then
192 elseif getsubtype(p)==2 then
193 p = node_next(node_next(p));
194 -- Note that another node_next will be executed outside this if-statement.
196 found_visible_node = true
197 find_first_char = false; last_char = nil
199 elseif pid==id_hlist then
200 if PACKED == get_attr_icflag(p) then
201 local s = ltjd_glyph_from_packed(p)
202 if find_first_char then
203 first_char = s; find_first_char = false
205 last_char = s; found_visible_node = true
207 if getfield(p, 'shift')==0 then
209 if check_box(getlist(p), nil) then found_visible_node = true end
211 find_first_char = false; last_char = nil
214 elseif pid==id_math then
215 if find_first_char then
216 first_char = p; find_first_char = false
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 function check_box_high(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)
267 local traverse = node.direct.traverse
268 local function check_next_ickern(lp)
269 if lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) then
270 set_attr(lp, attr_icflag, IC_PROCESSED);
271 Np.last = lp; return node_next(lp)
273 Np.last = Np.nuc; return lp
277 local function calc_np_pbox(lp, last)
278 local first, lpa, nc = (not Np.first), KINSOKU, nil
279 Np.first = Np.first or lp; Np.id = id_pbox
280 set_attr(lp, attr_icflag, get_attr_icflag(lp));
281 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
282 local lpi = getid(lp)
283 if lpi==id_hlist or lpi==id_vlist then
284 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
285 Np.first = first and nc or Np.first
286 elseif (lpi==id_rule) and (lpa==PACKED) then
288 nc, lp = lp, node_next(lp)
290 nc, lp = lp, node_next(lp)
292 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
293 -- get_attr_icflag() ではいけない!
296 lp = check_next_ickern(lp)
297 Np.last_char = check_box_high(Np, Np.first, lp)
301 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
302 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
303 local min, max = math.min, math.max
304 local function calc_np_aux_glyph_common(lp, acc_flag)
306 Np.first= (Np.first or lp)
307 if if_lang_ja(lp) then
309 local m, mc, cls = set_np_xspc_jachar(Np, lp)
311 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
312 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
314 return true, check_next_ickern(lp);
317 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
319 local first_glyph, last_glyph = lp
320 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
321 local y_adjust = has_attr(lp,attr_ablshift) or 0
322 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
323 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
324 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
326 for lx in traverse(lp) do
327 local lai = get_attr_icflag(lx)
328 if lx==last or lai>=PACKED then
331 local lid = getid(lx)
332 if lid==id_glyph and not if_lang_ja(lx) then
334 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
335 y_adjust = has_attr(lx,attr_ablshift) or 0
336 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
337 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
338 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
339 elseif lid==id_kern then
340 local ls = getsubtype(lx)
341 if ls==2 then -- アクセント用の kern
342 set_attr(lx, attr_icflag, PROCESSED)
343 lx = node_next(lx) -- lx: アクセント本体
344 if getid(lx)==id_glyph then
345 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
346 else -- アクセントは上下にシフトされている
347 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
349 lx = node_next(node_next(lx))
352 elseif (ls==3) or (lai==ITALIC) then
353 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
363 if adj_depth>node_depth then
364 r = node_new(id_rule,3)
365 setfield(r, 'width', 0); setfield(r, 'height', 0)
366 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
367 set_attr(r, attr_icflag, PROCESSED)
370 Np.last_char = last_glyph
371 if r then insert_after(head, first_glyph, r) end
376 local nf, nc = getfont(npn), getchar(npn)
377 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
378 if not ct then -- variation selector
380 elseif (ct.left_protruding or 0) == 0 then
381 head = insert_before(head, npn, r)
382 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
383 elseif (ct.right_protruding or 0) == 0 then
384 insert_after(head, npn, r); Np.last, lp = r, r
386 ltjb.package_warning_no_line(
388 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
389 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
390 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
398 local calc_np_auxtable
400 local node_end_of_math = node.direct.end_of_math
401 local dir_tate = luatexja.dir_table.dir_tate
402 local sid_start_link = node.subtype('pdf_start_link')
403 local sid_start_thread = node.subtype('pdf_start_thread')
404 local sid_end_link = node.subtype('pdf_end_link')
405 local sid_end_thread = node.subtype('pdf_end_thread')
407 [id_glyph] = calc_np_aux_glyph_common,
408 [id_hlist] = function(lp)
410 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
411 set_attr(op, attr_icflag, PROCESSED)
412 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
413 if (flag or getfield(op, 'shift')~=0) then
417 Np.last_char = check_box_high(Np, getlist(op), nil)
421 [id_vlist] = function(lp)
423 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
424 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
428 box_like = function(lp)
429 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
431 return true, node_next(lp)
433 [id_whatsit] = function(lp)
434 local lps = getsubtype(lp)
435 if lps==sid_user then
436 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
437 local lq = node_next(lp);
438 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
441 set_attr(lp, attr_icflag, PROCESSED)
442 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
445 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
446 return true, node_next(lp)
448 return false, node_next(lp)
452 -- we do special treatment for these whatsit nodes.
453 if lps == sid_start_link or lps == sid_start_thread then
455 elseif lps == sid_end_link or lps == sid_end_thread then
456 Np.first, Nq.last = nil, lp;
458 set_attr(lp, attr_icflag, PROCESSED)
459 return false, node_next(lp)
462 [id_math] = function(lp)
463 Np.first, Np.nuc = (Np.first or lp), lp;
464 set_attr(lp, attr_icflag, PROCESSED)
465 set_np_xspc_alchar(Np, -1, lp)
466 local end_math = node_end_of_math(lp)
467 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
468 set_attr(end_math, attr_icflag, PROCESSED)
469 Np.last, Np.id = end_math, id_math;
470 return true, node_next(end_math);
472 [id_glue] = function(lp)
473 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
474 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
475 return true, node_next(lp)
477 [id_disc] = function(lp)
478 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
479 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
480 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
481 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
482 return true, node_next(lp)
484 [id_kern] = function(lp)
485 if getsubtype(lp)==2 then
486 Np.first = Np.first or lp
487 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
488 if getid(lp)==id_glyph then -- アクセント本体
489 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
490 else -- アクセントは上下にシフトされている
491 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
493 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
494 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
495 set_attr(lp, attr_icflag, PROCESSED);
496 return calc_np_aux_glyph_common(lp, true)
498 Np.first = Np.first or lp
499 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
500 Np.last = lp; return true, node_next(lp)
503 [id_penalty] = function(lp)
504 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
505 return false, node_next(lp)
509 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
510 calc_np_auxtable[15] = calc_np_auxtable.box_like
512 local function calc_np_aux_skip (lp)
513 set_attr(lp, attr_icflag, PROCESSED)
514 return false, node_next(lp)
517 function calc_np(last, lp)
519 -- We assume lp = node_next(Np.last)
520 Np, Nq, non_ihb_flag = Nq, Np, true
521 -- We clear `predefined' entries of Np before pairs() loop,
522 -- because using only pairs() loop is slower.
523 Np.post, Np.pre, Np.xspc = nil, nil, nil
524 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
525 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
526 for k in pairs(Np) do Np[k] = nil end
528 for k = 1,#Bp do Bp[k] = nil end
530 local lpa = has_attr(lp, attr_icflag) or 0
533 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
534 local lq = node_next(lp)
535 head = node_remove(head, lp); node_free(lp); lp = lq
537 return calc_np_pbox(lp, last)
540 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
541 if k then return lp end
548 -- extract informations from Np
549 -- We think that "Np is a Japanese character" if Np.met~=nil,
550 -- "Np is an alphabetic character" if Np.pre~=nil,
551 -- "Np is not a character" otherwise.
552 after_hlist = nil -- global
553 local after_alchar, extract_np
555 local PRE = luatexja.stack_table_index.PRE
556 local POST = luatexja.stack_table_index.POST
557 local KCAT = luatexja.stack_table_index.KCAT
558 local XSP = luatexja.stack_table_index.XSP
559 local dir_tate = luatexja.dir_table.dir_tate
562 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
563 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
564 local attr_autospc = luatexbase.attributes['ltj@autospc']
565 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
566 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
567 function set_np_xspc_jachar(Nx, x)
568 local m = ltjf_font_metric_table[getfont(x)]
569 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
571 local cls = slow_find_char_class(c, m, c_glyph)
572 Nx.met, Nx.class, Nx.char = m, cls, c;
573 local mc = m.char_type; Nx.char_type = mc
574 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
575 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
576 Nx.pre = table_current_stack[PRE + c] or 0
577 Nx.post = table_current_stack[POST + c] or 0
578 Nx.xspc = table_current_stack[XSP + c] or 3
579 Nx.kcat = table_current_stack[KCAT + c] or 0
580 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
583 function set_np_xspc_jachar_hbox(Nx, x)
584 local m = ltjf_font_metric_table[getfont(x)]
585 local c = has_attr(x, attr_jchar_code) or getchar(x)
586 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
587 local mc = m.char_type; Nx.char_type = mc
588 Nx.pre = table_current_stack[PRE + c] or 0
589 Nx.post = table_current_stack[POST + c] or 0
590 Nx.xspc = table_current_stack[XSP + c] or 3
591 Nx.kcat = table_current_stack[KCAT + c] or 0
592 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
596 local floor = math.floor
597 function set_np_xspc_alchar(Nx, c,x, lig)
599 local f = (lig ==1) and nullfunc or node_tail
600 local xc, xs = getfield(x, 'components'), getsubtype(x)
601 while xc and xs and xs%4>=2 do
602 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
605 Nx.pre = table_current_stack[PRE + c] or 0
606 Nx.post = table_current_stack[POST + c] or 0
608 Nx.pre, Nx.post = 0, 0
611 Nx.xspc = table_current_stack[XSP + c] or 3
612 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
614 local set_np_xspc_alchar = set_np_xspc_alchar
616 -- change the information for the next loop
617 -- (will be done if Nx is an alphabetic character or a hlist)
618 after_hlist = function (Nx)
619 local s = Nx.last_char
621 if getid(s)==id_glyph then
622 if if_lang_ja(s) then
623 set_np_xspc_jachar_hbox(Nx, s)
625 set_np_xspc_alchar(Nx, getchar(s), s, 2)
628 set_np_xspc_alchar(Nx, -1, s)
631 Nx.pre, Nx.met = nil, nil
635 after_alchar = function (Nx)
636 local x = Nx.last_char
637 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
642 -------------------- 最下層の処理
644 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', nullfunc)
646 -- change penalties (or create a new penalty, if needed)
647 local function handle_penalty_normal(post, pre, g)
648 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
649 local a = (pre or 0) + (post or 0)
651 if (a~=0 and not(g and getid(g)==id_kern)) then
652 local p = node_new(id_penalty)
653 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
654 setfield(p, 'penalty', a)
655 head = insert_before(head, Np.first, p)
657 set_attr(p, attr_icflag, KINSOKU)
659 else for _, v in pairs(Bp) do add_penalty(v,a) end
663 local function handle_penalty_always(post, pre, g)
664 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
665 local a = (pre or 0) + (post or 0)
667 if not (g and getid(g)==id_glue) or a~=0 then
668 local p = node_new(id_penalty)
669 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
670 setfield(p, 'penalty', a)
671 head = insert_before(head, Np.first, p)
673 set_attr(p, attr_icflag, KINSOKU)
675 else for _, v in pairs(Bp) do add_penalty(v,a) end
679 local function handle_penalty_suppress(post, pre, g)
680 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
682 if g and getid(g)==id_glue then
683 local p = node_new(id_penalty)
684 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
686 set_attr(p, attr_icflag, KINSOKU)
689 local a = (pre or 0) + (post or 0)
690 for _, v in pairs(Bp) do add_penalty(v,a) end
694 local function handle_penalty_jwp()
695 local a = table_current_stack[luatexja.stack_table_index.JWP]
696 if #widow_Bp == 0 then
698 local p = node_new(id_penalty)
699 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
700 setfield(p, 'penalty', a)
701 head = insert_before(head, widow_Np.first, p)
703 set_attr(p, attr_icflag, KINSOKU)
705 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
709 -- 和文文字間の JFM glue を node 化
710 local function new_jfm_glue(mc, bc, ac)
711 -- bc, ac: char classes
715 return node_copy(g[1]), g.ratio, false, false, false
717 local f = node_new(id_glue)
718 set_attr(f, attr_icflag, g.priority)
719 setglue(f, g.width, g.stretch, g.shrink)
720 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
726 -- Nq.last (kern w) .... (glue/kern g) Np.first
727 local function real_insert(g)
729 head = insert_before(head, Np.first, g)
735 -------------------- 和文文字間空白量の決定
738 local round = tex.round
739 local bg_ag = 2*id_glue - id_glue
740 local bg_ak = 2*id_glue - id_kern
741 local bk_ag = 2*id_kern - id_glue
742 local bk_ak = 2*id_kern - id_kern
744 local function blend_diffmet(b, a, rb, ra)
745 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
747 calc_ja_ja_aux = function (gb, ga, db, da)
748 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
749 and diffmet_rule ~= math.two_paverage then
754 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
757 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
760 local k = 2*getid(gb) - getid(ga)
763 setglue(gb, blend_diffmet(
764 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
766 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
768 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
771 elseif k == bk_ak then
773 setfield(gb, 'kern', blend_diffmet(
774 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
777 elseif k == bk_ag then
778 -- gb: kern, ga: glue
779 setglue(ga, blend_diffmet(
780 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
782 0, getfield(ga, 'stretch'), db, da),
784 0, -getfield(ga, 'shrink'), db, da))
788 -- gb: glue, ga: kern
789 setglue(gb, blend_diffmet(
790 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
792 getfield(gb, 'stretch'), 0, db, da),
794 -getfield(gb, 'shrink'), 0, db, da))
801 local null_skip_table = {0, 0, 0}
803 local get_kanjiskip, kanjiskip_jfm_flag
804 local calc_ja_ja_glue
806 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
807 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
809 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
810 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
811 if kanjiskip_jfm_flag then
812 local g = node_new(id_glue);
813 local bk = qm.kanjiskip or null_skip_table
814 setglue(g, bn and (bn*bk[1]) or 0,
815 bp and (bp*bk[2]) or 0,
816 bh and (bh*bk[3]) or 0, 0, 0)
817 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
820 return node_copy(kanji_skip)
822 local g = node_new(id_glue);
824 bn and (bn*getfield(kanji_skip, 'width')) or 0,
825 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
826 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
828 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
834 get_kanjiskip = function()
835 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
837 elseif Np.auto_kspc or Nq.auto_kspc then
838 local pm, qm = Np.met, Nq.met
839 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
840 return get_kanjiskip_low(true, qm, 1, 1, 1)
842 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
843 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
844 return calc_ja_ja_aux(gb, ga, 0, 1)
847 local g = node_new(id_glue)
848 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
853 calc_ja_ja_glue = function ()
854 local qm, pm = Nq.met, Np.met
855 local qmc, pmc = qm.char_type, pm.char_type
856 if (qmc==pmc) and (qm.var==pm.var) then
857 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
858 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
860 local npn, nqn = Np.nuc, Nq.nuc
861 local gb, db, bn, bp, bh
862 = new_jfm_glue(qmc, Nq.class,
863 slow_find_char_class(Np.char,
865 local ga, da, an, ap, ah
867 slow_find_char_class(Nq.char,
870 local g = calc_ja_ja_aux(gb, ga, db, da)
872 if (pmc==qmc) and (qm.var==pm.var) then
873 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
874 ga = get_kanjiskip_low(false, pm, an, ap, ah)
875 k = calc_ja_ja_aux(gb, ga, db, da)
882 -------------------- 和欧文間空白量の決定
885 local get_xkanjiskip, xkanjiskip_jfm_flag
886 local get_xkanjiskip_normal, get_xkanjiskip_jfm
888 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
889 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
891 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
892 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
893 if xkanjiskip_jfm_flag then
894 local g = node_new(id_glue);
895 local bk = qm.xkanjiskip or null_skip_table
896 setglue(g, bn and bk[1] or 0,
898 bh and bk[3] or 0, 0, 0)
899 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
902 return node_copy(xkanji_skip)
904 local g = node_new(id_glue);
906 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
907 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
908 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
910 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
916 get_xkanjiskip = function(Nn)
917 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
919 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
920 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
922 local g = node_new(id_glue)
923 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
929 -------------------- 隣接した「塊」間の処理
931 local function combine_spc(name)
932 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
935 local function get_OA_skip(is_kanji)
937 local g, _, kn, kp, kh = new_jfm_glue(
939 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
943 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
944 elseif is_kanji==1 then
945 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
946 and get_xkanjiskip_low(false, pm, kn, kp, kh)
950 local function get_OB_skip(is_kanji)
952 local g, _, kn, kp, kh = new_jfm_glue(
953 qm.char_type, Nq.class,
954 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
957 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
958 elseif is_kanji==1 then
959 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
960 and get_xkanjiskip_low(false, qm, kn, kp, kh)
965 -- (anything) .. jachar
966 local function handle_np_jachar(mode)
968 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
970 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
971 if not g then g = get_kanjiskip() end
972 handle_penalty_normal(Nq.post, Np.pre, g);
973 real_insert(g); real_insert(k)
974 elseif Nq.met then -- qid==id_hlist
976 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
977 if not g then g = get_kanjiskip() end
978 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
981 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
982 if not g then g = get_xkanjiskip(Np) end
983 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
984 real_insert(g); real_insert(k)
986 local g = non_ihb_flag and (get_OA_skip()) -- O_A
987 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
988 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
989 else handle_penalty_always(0, Np.pre, g)
993 if mode and Np.kcat%2~=1 then
994 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
999 -- jachar .. (anything)
1000 local function handle_nq_jachar()
1002 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
1003 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1005 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1006 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1007 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1008 else handle_penalty_always(Nq.post, 0, g)
1014 -- (anything) .. (和文文字で始まる hlist)
1015 local function handle_np_ja_hlist()
1017 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1018 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1019 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1020 elseif Nq.met then -- Nq.id==id_hlist
1021 local g = get_kanjiskip() -- K
1022 handle_penalty_suppress(0, 0, g); real_insert(g)
1024 local g = get_xkanjiskip(Np) -- X
1025 handle_penalty_suppress(0, 0, g); real_insert(g)
1029 -- (和文文字で終わる hlist) .. (anything)
1030 local function handle_nq_ja_hlist()
1032 local g = get_xkanjiskip(Nq) -- X
1033 handle_penalty_suppress(0, 0, g); real_insert(g)
1038 -- Nq が前側のクラスタとなることによる修正
1040 local adjust_nq_aux = {
1041 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1042 [id_hlist] = function() after_hlist(Nq) end,
1043 [id_pbox] = function() after_hlist(Nq) end,
1044 [id_disc] = function() after_hlist(Nq) end,
1045 [id_pbox_w] = function()
1046 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1051 function adjust_nq()
1052 local x = adjust_nq_aux[Nq.id]
1058 -------------------- 開始・終了時の処理
1060 local node_prev = node.direct.getprev
1062 local function handle_list_tail(mode, last)
1065 -- the current list is to be line-breaked.
1066 -- Insert \jcharwidowpenalty
1067 if widow_Np.first then handle_penalty_jwp() end
1070 -- the current list is the contents of a hbox
1071 local npi, pm = Np.id, Np.met
1072 if npi == id_jglyph or (npi==id_pbox and pm) then
1073 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1075 set_attr(g, attr_icflag, BOXBDD)
1076 head = insert_after(head, Np.last, g)
1083 local function handle_list_head(par_indented)
1084 local npi, pm = Np.id, Np.met
1085 if npi == id_jglyph or (npi==id_pbox and pm) then
1086 if non_ihb_flag then
1087 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1089 set_attr(g, attr_icflag, BOXBDD)
1090 if getid(g)==id_glue and #Bp==0 then
1091 local h = node_new(id_penalty)
1092 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1094 head = insert_before(head, Np.first, g)
1101 -- return value: (the initial cursor lp), (last node)
1104 local id_local = node.id('local_par')
1105 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1106 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1107 local KSK = luatexja.stack_table_index.KSK
1108 local XSK = luatexja.stack_table_index.XSK
1109 local dir_yoko = luatexja.dir_table.dir_yoko
1110 local dir_tate = luatexja.dir_table.dir_tate
1111 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1112 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1113 local table_pool = {
1114 {}, {}, {first=nil},
1115 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1116 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1117 post=nil, pre=nil, xspc=nil, },
1118 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1119 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1120 post=nil, pre=nil, xspc=nil, },
1122 init_var = function (mode,dir)
1123 -- 1073741823: max_dimen
1124 Bp, widow_Bp, widow_Np, Np, Nq
1125 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1126 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1127 table_current_stack = ltjs.table_current_stack
1129 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1130 local is_dir_tate = list_dir==dir_tate
1131 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1132 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1133 local TEMP = node_new(id_glue)
1134 -- TEMP is a dummy node, which will be freed at the end of the callback.
1135 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1138 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1139 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1143 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1144 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1148 -- the current list is to be line-breaked:
1149 -- hbox from \parindent is skipped.
1150 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1152 ((lpi==id_whatsit and lps~=sid_user)
1153 or ((lpi==id_hlist) and (lps==3))
1154 or (lpi==id_local)) do
1155 if (lpi==id_hlist) and (lps==3) then
1156 Np.char, par_indented = 'parbdd', 'parbdd'
1157 Np.width = getfield(lp, 'width')
1159 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1160 return lp, node_tail(head), par_indented, TEMP
1162 return head, nil, 'boxbdd', TEMP
1167 local ensure_tex_attr = ltjb.ensure_tex_attr
1168 local function cleanup(mode, TEMP)
1169 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1170 -- adjust attr_icflag for avoiding error
1171 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1172 node_free(kanji_skip);
1173 node_free(xkanji_skip); node_free(TEMP)
1176 local h = node_next(head)
1177 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1179 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1186 -------------------- 外部から呼ばれる関数
1189 function main(ahead, mode, dir)
1190 if not ahead then return ahead end
1191 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1194 local lp, last, par_indented, TEMP = init_var(mode,dir)
1195 lp = calc_np(last, lp)
1197 handle_list_head(par_indented)
1198 lp = calc_np(last,lp);
1201 local pid, pm = Np.id, Np.met
1203 if pid == id_jglyph then
1204 handle_np_jachar(mode)
1206 if pid==id_hlist then handle_np_ja_hlist()
1207 else handle_np_jachar() end
1209 if Nq.id==id_hlist then handle_nq_ja_hlist()
1210 else handle_nq_jachar() end
1212 lp = calc_np(last,lp)
1214 handle_list_tail(mode, last)
1216 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1218 return cleanup(mode, TEMP)
1223 local IHB = luatexja.userid_table.IHB
1224 local BPAR = luatexja.userid_table.BPAR
1225 local BOXB = luatexja.userid_table.BOXB
1226 local node_prev = node.direct.getprev
1227 local node_write = node.direct.write
1230 function create_inhibitglue_node()
1231 local tn = node_new(id_whatsit, sid_user)
1232 setfield(tn, 'user_id', IHB)
1233 setfield(tn, 'type', 100)
1234 setfield(tn, 'value', 1)
1238 -- Node for indicating beginning of a paragraph
1239 -- (for ltjsclasses)
1240 function create_beginpar_node()
1241 local tn = node_new(id_whatsit, sid_user)
1242 setfield(tn, 'user_id', BPAR)
1243 setfield(tn, 'type', 100)
1244 setfield(tn, 'value', 1)
1248 -- Node for indicating a head/end of a box
1249 function create_boxbdd_node()
1250 local tn = node_new(id_whatsit, sid_user)
1251 setfield(tn, 'user_id', BOXB)
1252 setfield(tn, 'type', 100)
1253 setfield(tn, 'value', 1)
1257 local function whatsit_callback(Np, lp, Nq)
1258 if Np and Np.nuc then return Np
1259 elseif Np and getfield(lp, 'user_id') == BPAR then
1260 Np.first = lp; Np.nuc = lp; Np.last = lp
1262 elseif Np and getfield(lp, 'user_id') == BOXB then
1263 Np.first = lp; Np.nuc = lp; Np.last = lp
1266 Np.class = fast_find_char_class('boxbdd', Nq.met)
1268 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1269 Np.auto_xspc, Np.auto_kspc = 0, 0
1277 local function whatsit_after_callback(s, Nq, Np)
1278 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1279 local x, y = node_prev(Nq.nuc), Nq.nuc
1280 Nq.first, Nq.nuc, Nq.last = x, x, x
1283 Nq.class = fast_find_char_class('parbdd', Np.met)
1285 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1286 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1288 head = node_remove(head, y)
1290 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1291 local x, y = node_prev(Nq.nuc), Nq.nuc
1292 Nq.first, Nq.nuc, Nq.last = x, x, x
1295 Nq.class = fast_find_char_class('boxbdd', Np.met)
1297 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1298 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1300 head = node_remove(head, y)
1306 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1307 "luatexja.beginpar.np_info", 1)
1308 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1309 "luatexja.beginpar.np_info_after", 1)