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
210 find_first_char = false
212 find_first_char = false; last_char = nil
215 elseif pid==id_math then
216 if find_first_char then
217 first_char = p; find_first_char = false
219 last_char = p; found_visible_node = true
220 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
222 elseif not (pid==id_ins or pid==id_mark
223 or pid==id_adjust or pid==id_whatsit
224 or pid==id_penalty) then
225 found_visible_node = true
226 find_first_char = false; last_char = nil
230 return found_visible_node
233 function check_box_high(Nx, box_ptr, box_end)
234 first_char = nil; last_char = nil; find_first_char = true
235 if check_box(box_ptr, box_end) then
236 local first_char = first_char
238 if getid(first_char)==id_glyph then
239 if if_lang_ja(first_char) then
240 set_np_xspc_jachar_hbox(Nx, first_char)
242 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
245 set_np_xspc_alchar(Nx, -1,first_char)
252 -------------------- Np の計算と情報取得
254 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
255 function (Np, lp, Nq)
256 if Np.nuc then return Np
258 return Np -- your code
261 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
262 function (stat, Nq, Np) return false end)
268 local traverse = node.direct.traverse
269 local function check_next_ickern(lp)
270 if lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) then
271 set_attr(lp, attr_icflag, IC_PROCESSED);
272 Np.last = lp; return node_next(lp)
274 Np.last = Np.nuc; return lp
278 local function calc_np_pbox(lp, last)
279 local first, lpa, nc = (not Np.first), KINSOKU, nil
280 Np.first = Np.first or lp; Np.id = id_pbox
281 set_attr(lp, attr_icflag, get_attr_icflag(lp));
282 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
283 local lpi = getid(lp)
284 if lpi==id_hlist or lpi==id_vlist then
285 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
286 Np.first = first and nc or Np.first
287 elseif (lpi==id_rule) and (lpa==PACKED) then
289 nc, lp = lp, node_next(lp)
291 nc, lp = lp, node_next(lp)
293 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
294 -- get_attr_icflag() ではいけない!
297 lp = check_next_ickern(lp)
298 Np.last_char = check_box_high(Np, Np.first, lp)
302 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
303 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
304 local min, max = math.min, math.max
305 local function calc_np_aux_glyph_common(lp, acc_flag)
307 Np.first= (Np.first or lp)
308 if if_lang_ja(lp) then
310 local m, mc, cls = set_np_xspc_jachar(Np, lp)
312 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
313 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
315 return true, check_next_ickern(lp);
318 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
320 local first_glyph, last_glyph = lp
321 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
322 local y_adjust = has_attr(lp,attr_ablshift) or 0
323 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
324 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
325 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
327 for lx in traverse(lp) do
328 local lai = get_attr_icflag(lx)
329 if lx==last or lai>=PACKED then
332 local lid = getid(lx)
333 if lid==id_glyph and not if_lang_ja(lx) then
335 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
336 y_adjust = has_attr(lx,attr_ablshift) or 0
337 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
338 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
339 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
340 elseif lid==id_kern then
341 local ls = getsubtype(lx)
342 if ls==2 then -- アクセント用の kern
343 set_attr(lx, attr_icflag, PROCESSED)
344 lx = node_next(lx) -- lx: アクセント本体
345 if getid(lx)==id_glyph then
346 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
347 else -- アクセントは上下にシフトされている
348 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
350 lx = node_next(node_next(lx))
353 elseif (ls==3) or (lai==ITALIC) then
354 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
364 if adj_depth>node_depth then
365 r = node_new(id_rule,3)
366 setfield(r, 'width', 0); setfield(r, 'height', 0)
367 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
368 set_attr(r, attr_icflag, PROCESSED)
371 Np.last_char = last_glyph
372 if r then insert_after(head, first_glyph, r) end
377 local nf, nc = getfont(npn), getchar(npn)
378 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
379 if not ct then -- variation selector
381 elseif (ct.left_protruding or 0) == 0 then
382 head = insert_before(head, npn, r)
383 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
384 elseif (ct.right_protruding or 0) == 0 then
385 insert_after(head, npn, r); Np.last, lp = r, r
387 ltjb.package_warning_no_line(
389 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
390 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
391 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
399 local calc_np_auxtable
401 local node_end_of_math = node.direct.end_of_math
402 local dir_tate = luatexja.dir_table.dir_tate
403 local sid_start_link = node.subtype('pdf_start_link')
404 local sid_start_thread = node.subtype('pdf_start_thread')
405 local sid_end_link = node.subtype('pdf_end_link')
406 local sid_end_thread = node.subtype('pdf_end_thread')
408 [id_glyph] = calc_np_aux_glyph_common,
409 [id_hlist] = function(lp)
411 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
412 set_attr(op, attr_icflag, PROCESSED)
413 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
414 if (flag or getfield(op, 'shift')~=0) then
418 Np.last_char = check_box_high(Np, getlist(op), nil)
422 [id_vlist] = function(lp)
424 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
425 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
429 box_like = function(lp)
430 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
432 return true, node_next(lp)
434 [id_whatsit] = function(lp)
435 local lps = getsubtype(lp)
436 if lps==sid_user then
437 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
438 local lq = node_next(lp);
439 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
442 set_attr(lp, attr_icflag, PROCESSED)
443 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
446 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
447 return true, node_next(lp)
449 return false, node_next(lp)
453 -- we do special treatment for these whatsit nodes.
454 if lps == sid_start_link or lps == sid_start_thread then
456 elseif lps == sid_end_link or lps == sid_end_thread then
457 Np.first, Nq.last = nil, lp;
459 set_attr(lp, attr_icflag, PROCESSED)
460 return false, node_next(lp)
463 [id_math] = function(lp)
464 Np.first, Np.nuc = (Np.first or lp), lp;
465 set_attr(lp, attr_icflag, PROCESSED)
466 set_np_xspc_alchar(Np, -1, lp)
467 local end_math = node_end_of_math(lp)
468 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
469 set_attr(end_math, attr_icflag, PROCESSED)
470 Np.last, Np.id = end_math, id_math;
471 return true, node_next(end_math);
473 [id_glue] = function(lp)
474 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
475 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
476 return true, node_next(lp)
478 [id_disc] = function(lp)
479 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
480 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
481 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
482 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
483 return true, node_next(lp)
485 [id_kern] = function(lp)
486 if getsubtype(lp)==2 then
487 Np.first = Np.first or lp
488 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
489 if getid(lp)==id_glyph then -- アクセント本体
490 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
491 else -- アクセントは上下にシフトされている
492 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
494 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
495 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
496 set_attr(lp, attr_icflag, PROCESSED);
497 return calc_np_aux_glyph_common(lp, true)
499 Np.first = Np.first or lp
500 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
501 Np.last = lp; return true, node_next(lp)
504 [id_penalty] = function(lp)
505 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
506 return false, node_next(lp)
510 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
511 calc_np_auxtable[15] = calc_np_auxtable.box_like
513 local function calc_np_aux_skip (lp)
514 set_attr(lp, attr_icflag, PROCESSED)
515 return false, node_next(lp)
518 function calc_np(last, lp)
520 -- We assume lp = node_next(Np.last)
521 Np, Nq, non_ihb_flag = Nq, Np, true
522 -- We clear `predefined' entries of Np before pairs() loop,
523 -- because using only pairs() loop is slower.
524 Np.post, Np.pre, Np.xspc = nil, nil, nil
525 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
526 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
527 for k in pairs(Np) do Np[k] = nil end
529 for k = 1,#Bp do Bp[k] = nil end
531 local lpa = has_attr(lp, attr_icflag) or 0
534 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
535 local lq = node_next(lp)
536 head = node_remove(head, lp); node_free(lp); lp = lq
538 return calc_np_pbox(lp, last)
541 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
542 if k then return lp end
549 -- extract informations from Np
550 -- We think that "Np is a Japanese character" if Np.met~=nil,
551 -- "Np is an alphabetic character" if Np.pre~=nil,
552 -- "Np is not a character" otherwise.
553 after_hlist = nil -- global
554 local after_alchar, extract_np
556 local PRE = luatexja.stack_table_index.PRE
557 local POST = luatexja.stack_table_index.POST
558 local KCAT = luatexja.stack_table_index.KCAT
559 local XSP = luatexja.stack_table_index.XSP
560 local dir_tate = luatexja.dir_table.dir_tate
563 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
564 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
565 local attr_autospc = luatexbase.attributes['ltj@autospc']
566 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
567 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
568 function set_np_xspc_jachar(Nx, x)
569 local m = ltjf_font_metric_table[getfont(x)]
570 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
572 local cls = slow_find_char_class(c, m, c_glyph)
573 Nx.met, Nx.class, Nx.char = m, cls, c;
574 local mc = m.char_type; Nx.char_type = mc
575 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
576 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
577 Nx.pre = table_current_stack[PRE + c] or 0
578 Nx.post = table_current_stack[POST + c] or 0
579 Nx.xspc = table_current_stack[XSP + c] or 3
580 Nx.kcat = table_current_stack[KCAT + c] or 0
581 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
584 function set_np_xspc_jachar_hbox(Nx, x)
585 local m = ltjf_font_metric_table[getfont(x)]
586 local c = has_attr(x, attr_jchar_code) or getchar(x)
587 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
588 local mc = m.char_type; Nx.char_type = mc
589 Nx.pre = table_current_stack[PRE + c] or 0
590 Nx.post = table_current_stack[POST + c] or 0
591 Nx.xspc = table_current_stack[XSP + c] or 3
592 Nx.kcat = table_current_stack[KCAT + c] or 0
593 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
597 local floor = math.floor
598 function set_np_xspc_alchar(Nx, c,x, lig)
600 local f = (lig ==1) and nullfunc or node_tail
601 local xc, xs = getfield(x, 'components'), getsubtype(x)
602 while xc and xs and xs%4>=2 do
603 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
606 Nx.pre = table_current_stack[PRE + c] or 0
607 Nx.post = table_current_stack[POST + c] or 0
609 Nx.pre, Nx.post = 0, 0
612 Nx.xspc = table_current_stack[XSP + c] or 3
613 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
615 local set_np_xspc_alchar = set_np_xspc_alchar
617 -- change the information for the next loop
618 -- (will be done if Nx is an alphabetic character or a hlist)
619 after_hlist = function (Nx)
620 local s = Nx.last_char
622 if getid(s)==id_glyph then
623 if if_lang_ja(s) then
624 set_np_xspc_jachar_hbox(Nx, s)
626 set_np_xspc_alchar(Nx, getchar(s), s, 2)
629 set_np_xspc_alchar(Nx, -1, s)
632 Nx.pre, Nx.met = nil, nil
636 after_alchar = function (Nx)
637 local x = Nx.last_char
638 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
643 -------------------- 最下層の処理
645 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', nullfunc)
647 -- change penalties (or create a new penalty, if needed)
648 local function handle_penalty_normal(post, pre, g)
649 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
650 local a = (pre or 0) + (post or 0)
652 if (a~=0 and not(g and getid(g)==id_kern)) then
653 local p = node_new(id_penalty)
654 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
655 setfield(p, 'penalty', a)
656 head = insert_before(head, Np.first, p)
658 set_attr(p, attr_icflag, KINSOKU)
660 else for _, v in pairs(Bp) do add_penalty(v,a) end
664 local function handle_penalty_always(post, pre, g)
665 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
666 local a = (pre or 0) + (post or 0)
668 if not (g and getid(g)==id_glue) or a~=0 then
669 local p = node_new(id_penalty)
670 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
671 setfield(p, 'penalty', a)
672 head = insert_before(head, Np.first, p)
674 set_attr(p, attr_icflag, KINSOKU)
676 else for _, v in pairs(Bp) do add_penalty(v,a) end
680 local function handle_penalty_suppress(post, pre, g)
681 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
683 if g and getid(g)==id_glue then
684 local p = node_new(id_penalty)
685 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
687 set_attr(p, attr_icflag, KINSOKU)
690 local a = (pre or 0) + (post or 0)
691 for _, v in pairs(Bp) do add_penalty(v,a) end
695 local function handle_penalty_jwp()
696 local a = table_current_stack[luatexja.stack_table_index.JWP]
697 if #widow_Bp == 0 then
699 local p = node_new(id_penalty)
700 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
701 setfield(p, 'penalty', a)
702 head = insert_before(head, widow_Np.first, p)
704 set_attr(p, attr_icflag, KINSOKU)
706 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
710 -- 和文文字間の JFM glue を node 化
711 local function new_jfm_glue(mc, bc, ac)
712 -- bc, ac: char classes
716 return node_copy(g[1]), g.ratio, false, false, false
718 local f = node_new(id_glue)
719 set_attr(f, attr_icflag, g.priority)
720 setglue(f, g.width, g.stretch, g.shrink)
721 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
727 -- Nq.last (kern w) .... (glue/kern g) Np.first
728 local function real_insert(g)
730 head = insert_before(head, Np.first, g)
736 -------------------- 和文文字間空白量の決定
739 local round = tex.round
740 local bg_ag = 2*id_glue - id_glue
741 local bg_ak = 2*id_glue - id_kern
742 local bk_ag = 2*id_kern - id_glue
743 local bk_ak = 2*id_kern - id_kern
745 local function blend_diffmet(b, a, rb, ra)
746 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
748 calc_ja_ja_aux = function (gb, ga, db, da)
749 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
750 and diffmet_rule ~= math.two_paverage then
755 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
758 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
761 local k = 2*getid(gb) - getid(ga)
764 setglue(gb, blend_diffmet(
765 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
767 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
769 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
772 elseif k == bk_ak then
774 setfield(gb, 'kern', blend_diffmet(
775 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
778 elseif k == bk_ag then
779 -- gb: kern, ga: glue
780 setglue(ga, blend_diffmet(
781 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
783 0, getfield(ga, 'stretch'), db, da),
785 0, -getfield(ga, 'shrink'), db, da))
789 -- gb: glue, ga: kern
790 setglue(gb, blend_diffmet(
791 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
793 getfield(gb, 'stretch'), 0, db, da),
795 -getfield(gb, 'shrink'), 0, db, da))
802 local null_skip_table = {0, 0, 0}
804 local get_kanjiskip, kanjiskip_jfm_flag
805 local calc_ja_ja_glue
807 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
808 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
810 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
811 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
812 if kanjiskip_jfm_flag then
813 local g = node_new(id_glue);
814 local bk = qm.kanjiskip or null_skip_table
815 setglue(g, bn and (bn*bk[1]) or 0,
816 bp and (bp*bk[2]) or 0,
817 bh and (bh*bk[3]) or 0, 0, 0)
818 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
821 return node_copy(kanji_skip)
823 local g = node_new(id_glue);
825 bn and (bn*getfield(kanji_skip, 'width')) or 0,
826 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
827 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
829 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
835 get_kanjiskip = function()
836 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
838 elseif Np.auto_kspc or Nq.auto_kspc then
839 local pm, qm = Np.met, Nq.met
840 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
841 return get_kanjiskip_low(true, qm, 1, 1, 1)
843 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
844 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
845 return calc_ja_ja_aux(gb, ga, 0, 1)
848 local g = node_new(id_glue)
849 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
854 calc_ja_ja_glue = function ()
855 local qm, pm = Nq.met, Np.met
856 local qmc, pmc = qm.char_type, pm.char_type
857 if (qmc==pmc) and (qm.var==pm.var) then
858 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
859 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
861 local npn, nqn = Np.nuc, Nq.nuc
862 local gb, db, bn, bp, bh
863 = new_jfm_glue(qmc, Nq.class,
864 slow_find_char_class(Np.char,
866 local ga, da, an, ap, ah
868 slow_find_char_class(Nq.char,
871 local g = calc_ja_ja_aux(gb, ga, db, da)
873 if (pmc==qmc) and (qm.var==pm.var) then
874 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
875 ga = get_kanjiskip_low(false, pm, an, ap, ah)
876 k = calc_ja_ja_aux(gb, ga, db, da)
883 -------------------- 和欧文間空白量の決定
886 local get_xkanjiskip, xkanjiskip_jfm_flag
887 local get_xkanjiskip_normal, get_xkanjiskip_jfm
889 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
890 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
892 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
893 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
894 if xkanjiskip_jfm_flag then
895 local g = node_new(id_glue);
896 local bk = qm.xkanjiskip or null_skip_table
897 setglue(g, bn and bk[1] or 0,
899 bh and bk[3] or 0, 0, 0)
900 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
903 return node_copy(xkanji_skip)
905 local g = node_new(id_glue);
907 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
908 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
909 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
911 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
917 get_xkanjiskip = function(Nn)
918 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
920 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
921 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
923 local g = node_new(id_glue)
924 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
930 -------------------- 隣接した「塊」間の処理
932 local function combine_spc(name)
933 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
936 local function get_OA_skip(is_kanji)
938 local g, _, kn, kp, kh = new_jfm_glue(
940 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
944 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
945 elseif is_kanji==1 then
946 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
947 and get_xkanjiskip_low(false, pm, kn, kp, kh)
951 local function get_OB_skip(is_kanji)
953 local g, _, kn, kp, kh = new_jfm_glue(
954 qm.char_type, Nq.class,
955 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
958 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
959 elseif is_kanji==1 then
960 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
961 and get_xkanjiskip_low(false, qm, kn, kp, kh)
966 -- (anything) .. jachar
967 local function handle_np_jachar(mode)
969 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
971 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
972 if not g then g = get_kanjiskip() end
973 handle_penalty_normal(Nq.post, Np.pre, g);
974 real_insert(g); real_insert(k)
975 elseif Nq.met then -- qid==id_hlist
977 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
978 if not g then g = get_kanjiskip() end
979 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
982 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
983 if not g then g = get_xkanjiskip(Np) end
984 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
985 real_insert(g); real_insert(k)
987 local g = non_ihb_flag and (get_OA_skip()) -- O_A
988 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
989 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
990 else handle_penalty_always(0, Np.pre, g)
994 if mode and Np.kcat%2~=1 then
995 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1000 -- jachar .. (anything)
1001 local function handle_nq_jachar()
1003 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
1004 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1006 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1007 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1008 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1009 else handle_penalty_always(Nq.post, 0, g)
1015 -- (anything) .. (和文文字で始まる hlist)
1016 local function handle_np_ja_hlist()
1018 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1019 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1020 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1021 elseif Nq.met then -- Nq.id==id_hlist
1022 local g = get_kanjiskip() -- K
1023 handle_penalty_suppress(0, 0, g); real_insert(g)
1025 local g = get_xkanjiskip(Np) -- X
1026 handle_penalty_suppress(0, 0, g); real_insert(g)
1030 -- (和文文字で終わる hlist) .. (anything)
1031 local function handle_nq_ja_hlist()
1033 local g = get_xkanjiskip(Nq) -- X
1034 handle_penalty_suppress(0, 0, g); real_insert(g)
1039 -- Nq が前側のクラスタとなることによる修正
1041 local adjust_nq_aux = {
1042 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1043 [id_hlist] = function() after_hlist(Nq) end,
1044 [id_pbox] = function() after_hlist(Nq) end,
1045 [id_disc] = function() after_hlist(Nq) end,
1046 [id_pbox_w] = function()
1047 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1052 function adjust_nq()
1053 local x = adjust_nq_aux[Nq.id]
1059 -------------------- 開始・終了時の処理
1061 local node_prev = node.direct.getprev
1063 local function handle_list_tail(mode, last)
1066 -- the current list is to be line-breaked.
1067 -- Insert \jcharwidowpenalty
1068 if widow_Np.first then handle_penalty_jwp() end
1071 -- the current list is the contents of a hbox
1072 local npi, pm = Np.id, Np.met
1073 if npi == id_jglyph or (npi==id_pbox and pm) then
1074 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1076 set_attr(g, attr_icflag, BOXBDD)
1077 head = insert_after(head, Np.last, g)
1084 local function handle_list_head(par_indented)
1085 local npi, pm = Np.id, Np.met
1086 if npi == id_jglyph or (npi==id_pbox and pm) then
1087 if non_ihb_flag then
1088 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1090 set_attr(g, attr_icflag, BOXBDD)
1091 if getid(g)==id_glue and #Bp==0 then
1092 local h = node_new(id_penalty)
1093 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1095 head = insert_before(head, Np.first, g)
1102 -- return value: (the initial cursor lp), (last node)
1105 local id_local = node.id('local_par')
1106 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1107 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1108 local KSK = luatexja.stack_table_index.KSK
1109 local XSK = luatexja.stack_table_index.XSK
1110 local dir_yoko = luatexja.dir_table.dir_yoko
1111 local dir_tate = luatexja.dir_table.dir_tate
1112 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1113 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1114 local table_pool = {
1115 {}, {}, {first=nil},
1116 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1117 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1118 post=nil, pre=nil, xspc=nil, },
1119 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1120 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1121 post=nil, pre=nil, xspc=nil, },
1123 init_var = function (mode,dir)
1124 -- 1073741823: max_dimen
1125 Bp, widow_Bp, widow_Np, Np, Nq
1126 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1127 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1128 table_current_stack = ltjs.table_current_stack
1130 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1131 local is_dir_tate = list_dir==dir_tate
1132 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1133 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1134 local TEMP = node_new(id_glue)
1135 -- TEMP is a dummy node, which will be freed at the end of the callback.
1136 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1139 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1140 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1144 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1145 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1149 -- the current list is to be line-breaked:
1150 -- hbox from \parindent is skipped.
1151 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1153 ((lpi==id_whatsit and lps~=sid_user)
1154 or ((lpi==id_hlist) and (lps==3))
1155 or (lpi==id_local)) do
1156 if (lpi==id_hlist) and (lps==3) then
1157 Np.char, par_indented = 'parbdd', 'parbdd'
1158 Np.width = getfield(lp, 'width')
1160 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1161 return lp, node_tail(head), par_indented, TEMP
1163 return head, nil, 'boxbdd', TEMP
1168 local ensure_tex_attr = ltjb.ensure_tex_attr
1169 local function cleanup(mode, TEMP)
1170 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1171 -- adjust attr_icflag for avoiding error
1172 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1173 node_free(kanji_skip);
1174 node_free(xkanji_skip); node_free(TEMP)
1177 local h = node_next(head)
1178 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1180 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1187 -------------------- 外部から呼ばれる関数
1190 function main(ahead, mode, dir)
1191 if not ahead then return ahead end
1192 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1195 local lp, last, par_indented, TEMP = init_var(mode,dir)
1196 lp = calc_np(last, lp)
1198 handle_list_head(par_indented)
1199 lp = calc_np(last,lp);
1202 local pid, pm = Np.id, Np.met
1204 if pid == id_jglyph then
1205 handle_np_jachar(mode)
1207 if pid==id_hlist then handle_np_ja_hlist()
1208 else handle_np_jachar() end
1210 if Nq.id==id_hlist then handle_nq_ja_hlist()
1211 else handle_nq_jachar() end
1213 lp = calc_np(last,lp)
1215 handle_list_tail(mode, last)
1217 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1219 return cleanup(mode, TEMP)
1224 local IHB = luatexja.userid_table.IHB
1225 local BPAR = luatexja.userid_table.BPAR
1226 local BOXB = luatexja.userid_table.BOXB
1227 local node_prev = node.direct.getprev
1228 local node_write = node.direct.write
1231 function create_inhibitglue_node()
1232 local tn = node_new(id_whatsit, sid_user)
1233 setfield(tn, 'user_id', IHB)
1234 setfield(tn, 'type', 100)
1235 setfield(tn, 'value', 1)
1239 -- Node for indicating beginning of a paragraph
1240 -- (for ltjsclasses)
1241 function create_beginpar_node()
1242 local tn = node_new(id_whatsit, sid_user)
1243 setfield(tn, 'user_id', BPAR)
1244 setfield(tn, 'type', 100)
1245 setfield(tn, 'value', 1)
1249 -- Node for indicating a head/end of a box
1250 function create_boxbdd_node()
1251 local tn = node_new(id_whatsit, sid_user)
1252 setfield(tn, 'user_id', BOXB)
1253 setfield(tn, 'type', 100)
1254 setfield(tn, 'value', 1)
1258 local function whatsit_callback(Np, lp, Nq)
1259 if Np and Np.nuc then return Np
1260 elseif Np and getfield(lp, 'user_id') == BPAR then
1261 Np.first = lp; Np.nuc = lp; Np.last = lp
1263 elseif Np and getfield(lp, 'user_id') == BOXB then
1264 Np.first = lp; Np.nuc = lp; Np.last = lp
1267 Np.class = fast_find_char_class('boxbdd', Nq.met)
1269 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1270 Np.auto_xspc, Np.auto_kspc = 0, 0
1278 local function whatsit_after_callback(s, Nq, Np)
1279 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1280 local x, y = node_prev(Nq.nuc), Nq.nuc
1281 Nq.first, Nq.nuc, Nq.last = x, x, x
1284 Nq.class = fast_find_char_class('parbdd', Np.met)
1286 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1287 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1289 head = node_remove(head, y)
1291 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1292 local x, y = node_prev(Nq.nuc), Nq.nuc
1293 Nq.first, Nq.nuc, Nq.last = x, x, x
1296 Nq.class = fast_find_char_class('boxbdd', Np.met)
1298 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1299 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1301 head = node_remove(head, y)
1307 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1308 "luatexja.beginpar.np_info", 1)
1309 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1310 "luatexja.beginpar.np_info_after", 1)