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 Np.first = Np.first or lp; Np.id = id_pbox
286 set_attr(lp, attr_icflag, get_attr_icflag(lp));
287 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
288 local lpi = getid(lp)
290 if lpi==id_rule then lp = node_next(lp) end
291 nc, lp = lp, node_next(lp)
292 elseif lpi==id_hlist or lpi==id_vlist then
293 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
294 Np.first = first and nc or Np.first
296 nc, lp = lp, node_next(lp)
298 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
299 -- get_attr_icflag() ではいけない!
302 lp = check_next_ickern(lp)
303 Np.last_char = check_box_high(Np, Np.first, lp)
307 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
308 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
309 local min, max = math.min, math.max
310 local function calc_np_aux_glyph_common(lp, acc_flag)
312 Np.first= (Np.first or lp)
313 if if_lang_ja(lp) then
315 local m, mc, cls = set_np_xspc_jachar(Np, lp)
317 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
318 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
320 return true, check_next_ickern(lp);
323 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
325 local first_glyph, last_glyph = lp
326 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
327 local y_adjust = has_attr(lp,attr_ablshift) or 0
328 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
329 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
330 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
332 for lx in traverse(lp) do
333 local lai = get_attr_icflag(lx)
334 if lx==last or lai>=PACKED then
337 local lid = getid(lx)
338 if lid==id_glyph and not if_lang_ja(lx) then
340 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
341 y_adjust = has_attr(lx,attr_ablshift) or 0
342 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
343 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
344 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
345 elseif lid==id_kern then
346 local ls = getsubtype(lx)
347 if ls==2 then -- アクセント用の kern
348 set_attr(lx, attr_icflag, PROCESSED)
349 lx = node_next(lx) -- lx: アクセント本体
350 if getid(lx)==id_glyph then
351 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
352 else -- アクセントは上下にシフトされている
353 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
355 lx = node_next(node_next(lx))
358 elseif (ls==3) or (lai==ITALIC) then
359 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
369 if adj_depth>node_depth then
370 r = node_new(id_rule,3)
371 setfield(r, 'width', 0); setfield(r, 'height', 0)
372 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
373 set_attr(r, attr_icflag, PROCESSED)
376 Np.last_char = last_glyph
377 if r then insert_after(head, first_glyph, r) end
382 local nf, nc = getfont(npn), getchar(npn)
383 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
384 if not ct then -- variation selector
386 elseif (ct.left_protruding or 0) == 0 then
387 head = insert_before(head, npn, r)
388 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
389 elseif (ct.right_protruding or 0) == 0 then
390 insert_after(head, npn, r); Np.last, lp = r, r
392 ltjb.package_warning_no_line(
394 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
395 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
396 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
404 local calc_np_auxtable
406 local node_end_of_math = node.direct.end_of_math
407 local dir_tate = luatexja.dir_table.dir_tate
408 local sid_start_link = node.subtype('pdf_start_link')
409 local sid_start_thread = node.subtype('pdf_start_thread')
410 local sid_end_link = node.subtype('pdf_end_link')
411 local sid_end_thread = node.subtype('pdf_end_thread')
413 [id_glyph] = calc_np_aux_glyph_common,
414 [id_hlist] = function(lp)
416 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
417 set_attr(op, attr_icflag, PROCESSED)
418 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
419 if (flag or getfield(op, 'shift')~=0) then
423 Np.last_char = check_box_high(Np, getlist(op), nil)
427 [id_vlist] = function(lp)
429 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
430 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
434 box_like = function(lp)
435 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
437 return true, node_next(lp)
439 [id_whatsit] = function(lp)
440 local lps = getsubtype(lp)
441 if lps==sid_user then
442 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
443 local lq = node_next(lp);
444 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
447 set_attr(lp, attr_icflag, PROCESSED)
448 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
451 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
452 return true, node_next(lp)
454 return false, node_next(lp)
458 -- we do special treatment for these whatsit nodes.
459 if lps == sid_start_link or lps == sid_start_thread then
461 elseif lps == sid_end_link or lps == sid_end_thread then
462 Np.first, Nq.last = nil, lp;
464 set_attr(lp, attr_icflag, PROCESSED)
465 return false, node_next(lp)
468 [id_math] = function(lp)
469 Np.first, Np.nuc = (Np.first or lp), lp;
470 set_attr(lp, attr_icflag, PROCESSED)
471 set_np_xspc_alchar(Np, -1, lp)
472 local end_math = node_end_of_math(lp)
473 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
474 set_attr(end_math, attr_icflag, PROCESSED)
475 Np.last, Np.id = end_math, id_math;
476 return true, node_next(end_math);
478 [id_glue] = 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 return true, node_next(lp)
483 [id_disc] = function(lp)
484 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
485 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
486 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
487 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
488 return true, node_next(lp)
490 [id_kern] = function(lp)
491 if getsubtype(lp)==2 then
492 Np.first = Np.first or lp
493 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
494 if getid(lp)==id_glyph then -- アクセント本体
495 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
496 else -- アクセントは上下にシフトされている
497 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
499 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
500 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
501 set_attr(lp, attr_icflag, PROCESSED);
502 return calc_np_aux_glyph_common(lp, true)
504 Np.first = Np.first or lp
505 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
506 Np.last = lp; return true, node_next(lp)
509 [id_penalty] = function(lp)
510 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
511 return false, node_next(lp)
515 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
516 calc_np_auxtable[15] = calc_np_auxtable.box_like
518 local function calc_np_aux_skip (lp)
519 set_attr(lp, attr_icflag, PROCESSED)
520 return false, node_next(lp)
523 function calc_np(last, lp)
525 -- We assume lp = node_next(Np.last)
526 Np, Nq, non_ihb_flag = Nq, Np, true
527 -- We clear `predefined' entries of Np before pairs() loop,
528 -- because using only pairs() loop is slower.
529 Np.post, Np.pre, Np.xspc = nil, nil, nil
530 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
531 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
532 for k in pairs(Np) do Np[k] = nil end
534 for k = 1,#Bp do Bp[k] = nil end
536 local lpa = has_attr(lp, attr_icflag) or 0
539 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
540 local lq = node_next(lp)
541 head = node_remove(head, lp); node_free(lp); lp = lq
543 return calc_np_pbox(lp, last)
546 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
547 if k then return lp end
554 -- extract informations from Np
555 -- We think that "Np is a Japanese character" if Np.met~=nil,
556 -- "Np is an alphabetic character" if Np.pre~=nil,
557 -- "Np is not a character" otherwise.
558 local after_hlist = nil -- global
559 local after_alchar, extract_np
561 local PRE = luatexja.stack_table_index.PRE
562 local POST = luatexja.stack_table_index.POST
563 local KCAT = luatexja.stack_table_index.KCAT
564 local XSP = luatexja.stack_table_index.XSP
565 local dir_tate = luatexja.dir_table.dir_tate
568 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
569 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
570 local attr_autospc = luatexbase.attributes['ltj@autospc']
571 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
572 local getcomponents = node.direct.getcomponents
573 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
574 function set_np_xspc_jachar(Nx, x)
575 local m = ltjf_font_metric_table[getfont(x)]
576 local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
577 if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
579 local cls = slow_find_char_class(c, m, c_glyph)
580 Nx.met, Nx.class, Nx.char = m, cls, c;
581 local mc = m.char_type; Nx.char_type = mc
582 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
583 Nx.pre = table_current_stack[PRE + c] or 0
584 Nx.post = table_current_stack[POST + c] or 0
585 Nx.xspc = table_current_stack[XSP + c] or 3
586 Nx.kcat = table_current_stack[KCAT + c] or 0
587 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
590 function set_np_xspc_jachar_hbox(Nx, x)
591 local m = ltjf_font_metric_table[getfont(x)]
592 local c = has_attr(x, attr_jchar_code) or getchar(x)
593 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
594 local mc = m.char_type; Nx.char_type = mc
595 Nx.pre = table_current_stack[PRE + c] or 0
596 Nx.post = table_current_stack[POST + c] or 0
597 Nx.xspc = table_current_stack[XSP + c] or 3
598 Nx.kcat = table_current_stack[KCAT + c] or 0
599 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
603 local floor = math.floor
604 local nullfunc = function(n) return n end
605 function set_np_xspc_alchar(Nx, c,x, lig)
607 local f = (lig ==1) and nullfunc or node_tail
608 local xc, xs = getcomponents(x), getsubtype(x)
609 while xc and xs and xs%4>=2 do
610 x = f(xc); xc, xs = getcomponents(x), getsubtype(x)
613 Nx.pre = table_current_stack[PRE + c] or 0
614 Nx.post = table_current_stack[POST + c] or 0
616 Nx.pre, Nx.post = 0, 0
619 Nx.xspc = table_current_stack[XSP + c] or 3
620 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
622 local set_np_xspc_alchar = set_np_xspc_alchar
624 -- change the information for the next loop
625 -- (will be done if Nx is an alphabetic character or a hlist)
626 after_hlist = function (Nx)
627 local s = Nx.last_char
629 if getid(s)==id_glyph then
630 if if_lang_ja(s) then
631 set_np_xspc_jachar_hbox(Nx, s)
633 set_np_xspc_alchar(Nx, getchar(s), s, 2)
636 set_np_xspc_alchar(Nx, -1, s)
639 Nx.pre, Nx.met = nil, nil
643 after_alchar = function (Nx)
644 local x = Nx.last_char
645 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
650 -------------------- 最下層の処理
652 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
654 -- change penalties (or create a new penalty, if needed)
655 local function handle_penalty_normal(post, pre, g)
656 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
657 local a = (pre or 0) + (post or 0)
659 if (a~=0 and not(g and getid(g)==id_kern)) then
660 local p = node_new(id_penalty)
661 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
662 setfield(p, 'penalty', a)
663 head = insert_before(head, Np.first, p)
665 set_attr(p, attr_icflag, KINSOKU)
667 else for _, v in pairs(Bp) do add_penalty(v,a) end
671 local function handle_penalty_always(post, pre, g)
672 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
673 local a = (pre or 0) + (post or 0)
675 if not (g and getid(g)==id_glue) or a~=0 then
676 local p = node_new(id_penalty)
677 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
678 setfield(p, 'penalty', a)
679 head = insert_before(head, Np.first, p)
681 set_attr(p, attr_icflag, KINSOKU)
683 else for _, v in pairs(Bp) do add_penalty(v,a) end
687 local function handle_penalty_suppress(post, pre, g)
688 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
690 if g and getid(g)==id_glue then
691 local p = node_new(id_penalty)
692 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
694 set_attr(p, attr_icflag, KINSOKU)
697 local a = (pre or 0) + (post or 0)
698 for _, v in pairs(Bp) do add_penalty(v,a) end
702 local function handle_penalty_jwp()
703 local a = table_current_stack[luatexja.stack_table_index.JWP]
704 if #widow_Bp == 0 then
706 local p = node_new(id_penalty)
707 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
708 setfield(p, 'penalty', a)
709 head = insert_before(head, widow_Np.first, p)
711 set_attr(p, attr_icflag, KINSOKU)
713 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
717 -- 和文文字間の JFM glue を node 化
718 local function new_jfm_glue(mc, bc, ac)
719 -- bc, ac: char classes
723 return node_copy(g[1]), g.ratio, false, false, false
725 local f = node_new(id_glue)
726 set_attr(f, attr_icflag, g.priority)
727 setglue(f, g.width, g.stretch, g.shrink)
728 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
734 -- Nq.last (kern w) .... (glue/kern g) Np.first
735 local function real_insert(g)
737 head = insert_before(head, Np.first, g)
743 -------------------- 和文文字間空白量の決定
746 local round = tex.round
747 local bg_ag = 2*id_glue - id_glue
748 local bg_ak = 2*id_glue - id_kern
749 local bk_ag = 2*id_kern - id_glue
750 local bk_ak = 2*id_kern - id_kern
752 local function blend_diffmet(b, a, rb, ra)
753 return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
755 calc_ja_ja_aux = function (gb, ga, db, da)
756 if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
757 and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
762 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
765 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
768 local k = 2*getid(gb) - getid(ga)
771 setglue(gb, blend_diffmet(
772 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
774 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
776 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
779 elseif k == bk_ak then
781 setfield(gb, 'kern', blend_diffmet(
782 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
785 elseif k == bk_ag then
786 -- gb: kern, ga: glue
787 setglue(ga, blend_diffmet(
788 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
790 0, getfield(ga, 'stretch'), db, da),
792 0, -getfield(ga, 'shrink'), db, da))
796 -- gb: glue, ga: kern
797 setglue(gb, blend_diffmet(
798 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
800 getfield(gb, 'stretch'), 0, db, da),
802 -getfield(gb, 'shrink'), 0, db, da))
809 local null_skip_table = {0, 0, 0}
811 local get_kanjiskip, kanjiskip_jfm_flag
812 local get_kanjiskip_low
813 local calc_ja_ja_glue
815 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
816 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
818 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
819 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
820 if kanjiskip_jfm_flag then
821 local g = node_new(id_glue);
822 local bk = qm.kanjiskip or null_skip_table
823 setglue(g, bn and (bn*bk[1]) or 0,
824 bp and (bp*bk[2]) or 0,
825 bh and (bh*bk[3]) or 0, 0, 0)
826 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
829 return node_copy(kanji_skip)
831 local g = node_new(id_glue);
833 bn and (bn*getfield(kanji_skip, 'width')) or 0,
834 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
835 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
837 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
843 get_kanjiskip = function()
844 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
846 elseif Np.auto_kspc or Nq.auto_kspc then
847 local pm, qm = Np.met, Nq.met
848 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
849 return get_kanjiskip_low(true, qm, 1, 1, 1)
851 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
852 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
853 return calc_ja_ja_aux(gb, ga, 0, 1)
856 local g = node_new(id_glue)
857 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
862 calc_ja_ja_glue = function ()
863 local qm, pm = Nq.met, Np.met
864 local qmc, pmc = qm.char_type, pm.char_type
865 if (qmc==pmc) and (qm.var==pm.var) then
866 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
867 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
869 local npn, nqn = Np.nuc, Nq.nuc
870 local gb, db, bn, bp, bh
871 = new_jfm_glue(qmc, Nq.class,
872 slow_find_char_class(Np.char,
874 local ga, da, an, ap, ah
876 slow_find_char_class(Nq.char,
879 local g = calc_ja_ja_aux(gb, ga, db, da)
881 if (pmc==qmc) and (qm.var==pm.var) then
882 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
883 ga = get_kanjiskip_low(false, pm, an, ap, ah)
884 k = calc_ja_ja_aux(gb, ga, db, da)
891 -------------------- 和欧文間空白量の決定
894 local get_xkanjiskip, xkanjiskip_jfm_flag
895 local get_xkanjiskip_normal, get_xkanjiskip_jfm
896 local get_xkanjiskip_low
898 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
899 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
901 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
902 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
903 if xkanjiskip_jfm_flag then
904 local g = node_new(id_glue);
905 local bk = qm.xkanjiskip or null_skip_table
906 setglue(g, bn and bk[1] or 0,
908 bh and bk[3] or 0, 0, 0)
909 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
912 return node_copy(xkanji_skip)
914 local g = node_new(id_glue);
916 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
917 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
918 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
920 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
926 get_xkanjiskip = function(Nn)
927 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
929 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
930 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
932 local g = node_new(id_glue)
933 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
939 -------------------- 隣接した「塊」間の処理
941 local function combine_spc(name)
942 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
945 -- NA, NB: alchar or math
946 local function get_NA_skip()
948 local g, _, kn, kp, kh = new_jfm_glue(
950 fast_find_char_class(
951 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
953 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
954 and get_xkanjiskip_low(false, pm, kn, kp, kh)
957 local function get_NB_skip()
959 local g, _, kn, kp, kh = new_jfm_glue(
960 qm.char_type, Nq.class,
961 fast_find_char_class(
962 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
964 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
965 and get_xkanjiskip_low(false, qm, kn, kp, kh)
969 local function get_OA_skip(is_kanji)
971 local g, _, kn, kp, kh = new_jfm_glue(
973 fast_find_char_class(
974 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
978 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
982 local function get_OB_skip(is_kanji)
984 local g, _, kn, kp, kh = new_jfm_glue(
985 qm.char_type, Nq.class,
986 fast_find_char_class(
987 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
990 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
995 -- (anything) .. jachar
996 local function handle_np_jachar(mode)
998 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
1000 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
1001 if not g then g = get_kanjiskip() end
1002 handle_penalty_normal(Nq.post, Np.pre, g);
1003 real_insert(g); real_insert(k)
1004 elseif Nq.met then -- qid==id_hlist
1006 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
1007 if not g then g = get_kanjiskip() end
1008 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1011 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1012 if not g then g = get_xkanjiskip(Np) end
1013 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1014 real_insert(g); real_insert(k)
1016 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1017 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1018 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1019 else handle_penalty_always(0, Np.pre, g)
1023 if mode and Np.kcat%2~=1 then
1024 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1029 -- jachar .. (anything)
1030 local function handle_nq_jachar()
1032 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1033 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1035 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1036 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1037 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1038 else handle_penalty_always(Nq.post, 0, g)
1044 -- (anything) .. (和文文字で始まる hlist)
1045 local function handle_np_ja_hlist()
1047 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1048 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1049 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1050 elseif Nq.met then -- Nq.id==id_hlist
1051 local g = get_kanjiskip() -- K
1052 handle_penalty_suppress(0, 0, g); real_insert(g)
1054 local g = get_xkanjiskip(Np) -- X
1055 handle_penalty_suppress(0, 0, g); real_insert(g)
1059 -- (和文文字で終わる hlist) .. (anything)
1060 local function handle_nq_ja_hlist()
1062 local g = get_xkanjiskip(Nq) -- X
1063 handle_penalty_suppress(0, 0, g); real_insert(g)
1068 -- Nq が前側のクラスタとなることによる修正
1071 local adjust_nq_aux = {
1072 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1073 [id_hlist] = function() after_hlist(Nq) end,
1074 [id_pbox] = function() after_hlist(Nq) end,
1075 [id_disc] = function() after_hlist(Nq) end,
1076 [id_pbox_w] = function()
1077 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1082 adjust_nq=function()
1083 local x = adjust_nq_aux[Nq.id]
1089 -------------------- 開始・終了時の処理
1091 local node_prev = node.direct.getprev
1093 local function handle_list_tail(mode, last)
1096 -- the current list is to be line-breaked.
1097 -- Insert \jcharwidowpenalty
1098 if widow_Np.first then handle_penalty_jwp() end
1101 -- the current list is the contents of a hbox
1102 local npi, pm = Np.id, Np.met
1103 if npi == id_jglyph or (npi==id_pbox and pm) then
1104 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1106 set_attr(g, attr_icflag, BOXBDD)
1107 head = insert_after(head, Np.last, g)
1114 local function handle_list_head(par_indented)
1115 local npi, pm = Np.id, Np.met
1116 if npi == id_jglyph or (npi==id_pbox and pm) then
1117 if non_ihb_flag then
1118 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1120 set_attr(g, attr_icflag, BOXBDD)
1121 if getid(g)==id_glue and #Bp==0 then
1122 local h = node_new(id_penalty)
1123 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1125 head = insert_before(head, Np.first, g)
1132 -- return value: (the initial cursor lp), (last node)
1135 local id_local = node.id('local_par')
1136 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1137 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1138 local KSK = luatexja.stack_table_index.KSK
1139 local XSK = luatexja.stack_table_index.XSK
1140 local dir_yoko = luatexja.dir_table.dir_yoko
1141 local dir_tate = luatexja.dir_table.dir_tate
1142 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1143 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1144 local table_pool = {
1145 {}, {}, {first=nil},
1146 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1147 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1148 post=nil, pre=nil, xspc=nil, },
1149 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1150 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1151 post=nil, pre=nil, xspc=nil, },
1153 init_var = function (mode,dir)
1154 -- 1073741823: max_dimen
1155 Bp, widow_Bp, widow_Np, Np, Nq
1156 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1157 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1158 table_current_stack = ltjs.table_current_stack
1160 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1161 local is_dir_tate = list_dir==dir_tate
1162 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1163 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1164 local TEMP = node_new(id_glue)
1165 -- TEMP is a dummy node, which will be freed at the end of the callback.
1166 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1169 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1170 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1174 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1175 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1179 -- the current list is to be line-breaked:
1180 -- hbox from \parindent is skipped.
1181 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1183 ((lpi==id_whatsit and lps~=sid_user)
1184 or ((lpi==id_hlist) and (lps==3))
1185 or (lpi==id_local)) do
1186 if (lpi==id_hlist) and (lps==3) then
1187 Np.char, par_indented = 'parbdd', 'parbdd'
1188 Np.width = getfield(lp, 'width')
1190 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1191 return lp, node_tail(head), par_indented, TEMP
1193 return head, nil, 'boxbdd', TEMP
1198 local ensure_tex_attr = ltjb.ensure_tex_attr
1199 local function cleanup(mode, TEMP)
1200 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1201 -- adjust attr_icflag for avoiding error
1202 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1203 node_free(kanji_skip);
1204 node_free(xkanji_skip); node_free(TEMP)
1207 local h = node_next(head)
1208 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1210 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1217 -------------------- 外部から呼ばれる関数
1220 function luatexja.jfmglue.main(ahead, mode, dir)
1221 if not ahead then return ahead end
1222 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1225 local lp, last, par_indented, TEMP = init_var(mode,dir)
1226 lp = calc_np(last, lp)
1228 handle_list_head(par_indented)
1229 lp = calc_np(last,lp);
1232 local pid, pm = Np.id, Np.met
1234 if pid == id_jglyph then
1235 handle_np_jachar(mode)
1237 if pid==id_hlist then handle_np_ja_hlist()
1238 else handle_np_jachar() end
1240 if Nq.id==id_hlist then handle_nq_ja_hlist()
1241 else handle_nq_jachar() end
1243 lp = calc_np(last,lp)
1245 handle_list_tail(mode, last)
1247 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1249 return cleanup(mode, TEMP)
1254 local IHB = luatexja.userid_table.IHB
1255 local BPAR = luatexja.userid_table.BPAR
1256 local BOXB = luatexja.userid_table.BOXB
1257 local node_prev = node.direct.getprev
1258 local node_write = node.direct.write
1261 function luatexja.jfmglue.create_inhibitglue_node()
1262 local tn = node_new(id_whatsit, sid_user)
1263 setfield(tn, 'user_id', IHB)
1264 setfield(tn, 'type', 100)
1265 setfield(tn, 'value', 1)
1269 -- Node for indicating beginning of a paragraph
1270 -- (for ltjsclasses)
1271 function luatexja.jfmglue.create_beginpar_node()
1272 local tn = node_new(id_whatsit, sid_user)
1273 setfield(tn, 'user_id', BPAR)
1274 setfield(tn, 'type', 100)
1275 setfield(tn, 'value', 1)
1279 -- Node for indicating a head/end of a box
1280 function luatexja.jfmglue.create_boxbdd_node()
1281 local tn = node_new(id_whatsit, sid_user)
1282 setfield(tn, 'user_id', BOXB)
1283 setfield(tn, 'type', 100)
1284 setfield(tn, 'value', 1)
1288 local function whatsit_callback(Np, lp, Nq)
1289 if Np and Np.nuc then return Np
1290 elseif Np and getfield(lp, 'user_id') == BPAR then
1291 Np.first = lp; Np.nuc = lp; Np.last = lp
1293 elseif Np and getfield(lp, 'user_id') == BOXB then
1294 Np.first = lp; Np.nuc = lp; Np.last = lp
1297 Np.class = fast_find_char_class('boxbdd', Nq.met)
1299 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1300 Np.auto_xspc, Np.auto_kspc = 0, 0
1308 local function whatsit_after_callback(s, Nq, Np)
1309 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1310 local x, y = node_prev(Nq.nuc), Nq.nuc
1311 Nq.first, Nq.nuc, Nq.last = x, x, x
1314 Nq.class = fast_find_char_class('parbdd', Np.met)
1316 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1317 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1319 head = node_remove(head, y)
1321 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1322 local x, y = node_prev(Nq.nuc), Nq.nuc
1323 Nq.first, Nq.nuc, Nq.last = x, x, x
1326 Nq.class = fast_find_char_class('boxbdd', Np.met)
1328 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1329 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1331 head = node_remove(head, y)
1337 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1338 "luatexja.beginpar.np_info", 1)
1339 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1340 "luatexja.beginpar.np_info_after", 1)
1344 luatexja.jfmglue.after_hlist = after_hlist
1345 luatexja.jfmglue.check_box_high = check_box_high