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)==0 or
276 getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) do
277 set_attr(lp, attr_icflag, IC_PROCESSED);
278 lx, lp = lp, node_next(lp)
280 Np.last = lx; return lp
283 local function calc_np_pbox(lp, last)
284 local first, nc = (not Np.first), nil
285 --local lpa = get_attr_icflag(lp)==PACKED and PACKED or KINSOKU -- KINSOKU: dummy
286 local lpa = get_attr_icflag(lp)
287 Np.first = Np.first or lp; Np.id = id_pbox
288 set_attr(lp, attr_icflag, get_attr_icflag(lp));
289 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
290 local lpi = getid(lp)
292 if lpi==id_rule then lp = node_next(lp) end
293 nc, lp = lp, node_next(lp)
294 elseif lpi==id_hlist or lpi==id_vlist then
295 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
296 Np.first = first and nc or Np.first
298 nc, lp = lp, node_next(lp)
300 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
301 -- get_attr_icflag() ではいけない!
304 lp = check_next_ickern(lp)
305 Np.last_char = check_box_high(Np, Np.first, lp)
309 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
310 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
311 local min, max = math.min, math.max
312 local function calc_np_aux_glyph_common(lp, acc_flag)
314 Np.first= (Np.first or lp)
315 if if_lang_ja(lp) then
317 local m, mc, cls = set_np_xspc_jachar(Np, lp)
319 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
320 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
322 return true, check_next_ickern(lp);
325 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
327 local first_glyph, last_glyph = lp
328 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
329 local y_adjust = has_attr(lp,attr_ablshift) or 0
330 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
331 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
332 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
334 for lx in traverse(lp) do
335 local lai = get_attr_icflag(lx)
336 if lx==last or lai>=PACKED then
339 local lid = getid(lx)
340 if lid==id_glyph and not if_lang_ja(lx) then
342 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
343 y_adjust = has_attr(lx,attr_ablshift) or 0
344 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
345 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
346 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
347 elseif lid==id_kern then
348 local ls = getsubtype(lx)
349 if ls==2 then -- アクセント用の kern
350 set_attr(lx, attr_icflag, PROCESSED)
351 lx = node_next(lx) -- lx: アクセント本体
352 if getid(lx)==id_glyph then
353 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
354 else -- アクセントは上下にシフトされている
355 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
357 lx = node_next(node_next(lx))
360 elseif (ls==3) or (lai==ITALIC) then
361 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
371 if adj_depth>node_depth then
372 r = node_new(id_rule,3)
373 setfield(r, 'width', 0); setfield(r, 'height', 0)
374 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
375 set_attr(r, attr_icflag, PROCESSED)
378 Np.last_char = last_glyph
379 if r then insert_after(head, first_glyph, r) end
384 local nf, nc = getfont(npn), getchar(npn)
385 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
386 if not ct then -- variation selector
388 elseif (ct.left_protruding or 0) == 0 then
389 head = insert_before(head, npn, r)
390 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
391 elseif (ct.right_protruding or 0) == 0 then
392 insert_after(head, npn, r); Np.last, lp = r, r
394 ltjb.package_warning_no_line(
396 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
397 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
398 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
406 local calc_np_auxtable
408 local node_end_of_math = node.direct.end_of_math
409 local dir_tate = luatexja.dir_table.dir_tate
410 local sid_start_link = node.subtype('pdf_start_link')
411 local sid_start_thread = node.subtype('pdf_start_thread')
412 local sid_end_link = node.subtype('pdf_end_link')
413 local sid_end_thread = node.subtype('pdf_end_thread')
415 [id_glyph] = calc_np_aux_glyph_common,
416 [id_hlist] = function(lp)
418 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
419 set_attr(op, attr_icflag, PROCESSED)
420 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
421 if (flag or getfield(op, 'shift')~=0) then
425 Np.last_char = check_box_high(Np, getlist(op), nil)
429 [id_vlist] = function(lp)
431 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
432 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
436 box_like = function(lp)
437 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
439 return true, node_next(lp)
441 [id_whatsit] = function(lp)
442 local lps = getsubtype(lp)
443 if lps==sid_user then
444 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
445 local lq = node_next(lp);
446 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
449 set_attr(lp, attr_icflag, PROCESSED)
450 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
453 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
454 return true, node_next(lp)
456 return false, node_next(lp)
460 -- we do special treatment for these whatsit nodes.
461 if lps == sid_start_link or lps == sid_start_thread then
463 elseif lps == sid_end_link or lps == sid_end_thread then
464 Np.first, Nq.last = nil, lp;
466 set_attr(lp, attr_icflag, PROCESSED)
467 return false, node_next(lp)
470 [id_math] = function(lp)
471 Np.first, Np.nuc = (Np.first or lp), lp;
472 set_attr(lp, attr_icflag, PROCESSED)
473 set_np_xspc_alchar(Np, -1, lp)
474 local end_math = node_end_of_math(lp)
475 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
476 set_attr(end_math, attr_icflag, PROCESSED)
477 Np.last, Np.id = end_math, id_math;
478 return true, node_next(end_math);
480 [id_glue] = function(lp)
481 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
482 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
483 return true, node_next(lp)
485 [id_disc] = function(lp)
486 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
487 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
488 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
489 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
490 return true, node_next(lp)
492 [id_kern] = function(lp)
493 if getsubtype(lp)==2 then
494 Np.first = Np.first or lp
495 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
496 if getid(lp)==id_glyph then -- アクセント本体
497 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
498 else -- アクセントは上下にシフトされている
499 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
501 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
502 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
503 set_attr(lp, attr_icflag, PROCESSED);
504 return calc_np_aux_glyph_common(lp, true)
506 Np.first = Np.first or lp
507 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
508 Np.last = lp; return true, node_next(lp)
511 [id_penalty] = function(lp)
512 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
513 return false, node_next(lp)
517 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
518 calc_np_auxtable[15] = calc_np_auxtable.box_like
520 local function calc_np_aux_skip (lp)
521 set_attr(lp, attr_icflag, PROCESSED)
522 return false, node_next(lp)
525 function calc_np(last, lp)
527 -- We assume lp = node_next(Np.last)
528 Np, Nq, non_ihb_flag = Nq, Np, true
529 -- We clear `predefined' entries of Np before pairs() loop,
530 -- because using only pairs() loop is slower.
531 Np.post, Np.pre, Np.xspc = nil, nil, nil
532 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
533 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
534 for k in pairs(Np) do Np[k] = nil end
536 for k = 1,#Bp do Bp[k] = nil end
538 local lpa = has_attr(lp, attr_icflag) or 0
541 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
542 local lq = node_next(lp)
543 head = node_remove(head, lp); node_free(lp); lp = lq
545 return calc_np_pbox(lp, last)
548 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
549 if k then return lp end
556 -- extract informations from Np
557 -- We think that "Np is a Japanese character" if Np.met~=nil,
558 -- "Np is an alphabetic character" if Np.pre~=nil,
559 -- "Np is not a character" otherwise.
560 local after_hlist = nil -- global
561 local after_alchar, extract_np
563 local PRE = luatexja.stack_table_index.PRE
564 local POST = luatexja.stack_table_index.POST
565 local KCAT = luatexja.stack_table_index.KCAT
566 local XSP = luatexja.stack_table_index.XSP
567 local dir_tate = luatexja.dir_table.dir_tate
570 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
571 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
572 local attr_autospc = luatexbase.attributes['ltj@autospc']
573 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
574 local getcomponents = node.direct.getcomponents
575 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
576 function set_np_xspc_jachar(Nx, x)
577 local m = ltjf_font_metric_table[getfont(x)]
578 local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
579 if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
581 local cls = slow_find_char_class(c, m, c_glyph)
582 Nx.met, Nx.class, Nx.char = m, cls, c;
583 local mc = m.char_type; Nx.char_type = mc
584 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
585 Nx.pre = table_current_stack[PRE + c] or 0
586 Nx.post = table_current_stack[POST + c] or 0
587 Nx.xspc = table_current_stack[XSP + c] or 3
588 Nx.kcat = table_current_stack[KCAT + c] or 0
589 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
592 function set_np_xspc_jachar_hbox(Nx, x)
593 local m = ltjf_font_metric_table[getfont(x)]
594 local c = has_attr(x, attr_jchar_code) or getchar(x)
595 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
596 local mc = m.char_type; Nx.char_type = mc
597 Nx.pre = table_current_stack[PRE + c] or 0
598 Nx.post = table_current_stack[POST + c] or 0
599 Nx.xspc = table_current_stack[XSP + c] or 3
600 Nx.kcat = table_current_stack[KCAT + c] or 0
601 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
605 local floor = math.floor
606 local nullfunc = function(n) return n end
607 function set_np_xspc_alchar(Nx, c,x, lig)
609 local f = (lig ==1) and nullfunc or node_tail
610 local xc, xs = getcomponents(x), getsubtype(x)
611 while xc and xs and xs%4>=2 do
612 x = f(xc); xc, xs = getcomponents(x), getsubtype(x)
615 Nx.pre = table_current_stack[PRE + c] or 0
616 Nx.post = table_current_stack[POST + c] or 0
618 Nx.pre, Nx.post = 0, 0
621 Nx.xspc = table_current_stack[XSP + c] or 3
622 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
624 local set_np_xspc_alchar = set_np_xspc_alchar
626 -- change the information for the next loop
627 -- (will be done if Nx is an alphabetic character or a hlist)
628 after_hlist = function (Nx)
629 local s = Nx.last_char
631 if getid(s)==id_glyph then
632 if if_lang_ja(s) then
633 set_np_xspc_jachar_hbox(Nx, s)
635 set_np_xspc_alchar(Nx, getchar(s), s, 2)
638 set_np_xspc_alchar(Nx, -1, s)
641 Nx.pre, Nx.met = nil, nil
645 after_alchar = function (Nx)
646 local x = Nx.last_char
647 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
652 -------------------- 最下層の処理
654 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
656 -- change penalties (or create a new penalty, if needed)
657 local function handle_penalty_normal(post, pre, g)
658 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
659 local a = (pre or 0) + (post or 0)
661 if (a~=0 and not(g and getid(g)==id_kern)) then
662 local p = node_new(id_penalty)
663 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
664 setfield(p, 'penalty', a)
665 head = insert_before(head, Np.first, p)
667 set_attr(p, attr_icflag, KINSOKU)
669 else for _, v in pairs(Bp) do add_penalty(v,a) end
673 local function handle_penalty_always(post, pre, g)
674 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
675 local a = (pre or 0) + (post or 0)
677 if not (g and getid(g)==id_glue) or a~=0 then
678 local p = node_new(id_penalty)
679 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
680 setfield(p, 'penalty', a)
681 head = insert_before(head, Np.first, p)
683 set_attr(p, attr_icflag, KINSOKU)
685 else for _, v in pairs(Bp) do add_penalty(v,a) end
689 local function handle_penalty_suppress(post, pre, g)
690 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
692 if g and getid(g)==id_glue then
693 local p = node_new(id_penalty)
694 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
696 set_attr(p, attr_icflag, KINSOKU)
699 local a = (pre or 0) + (post or 0)
700 for _, v in pairs(Bp) do add_penalty(v,a) end
704 local function handle_penalty_jwp()
705 local a = table_current_stack[luatexja.stack_table_index.JWP]
706 if #widow_Bp == 0 then
708 local p = node_new(id_penalty)
709 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
710 setfield(p, 'penalty', a)
711 head = insert_before(head, widow_Np.first, p)
713 set_attr(p, attr_icflag, KINSOKU)
715 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
719 -- 和文文字間の JFM glue を node 化
720 local function new_jfm_glue(mc, bc, ac)
721 -- bc, ac: char classes
725 return node_copy(g[1]), g.ratio, false, false, false
727 local f = node_new(id_glue)
728 set_attr(f, attr_icflag, g.priority)
729 setglue(f, g.width, g.stretch, g.shrink)
730 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
736 -- Nq.last (kern w) .... (glue/kern g) Np.first
737 local function real_insert(g)
739 head = insert_before(head, Np.first, g)
745 -------------------- 和文文字間空白量の決定
748 local round = tex.round
749 local bg_ag = 2*id_glue - id_glue
750 local bg_ak = 2*id_glue - id_kern
751 local bk_ag = 2*id_kern - id_glue
752 local bk_ak = 2*id_kern - id_kern
754 local function blend_diffmet(b, a, rb, ra)
755 return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
757 calc_ja_ja_aux = function (gb, ga, db, da)
758 if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
759 and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
764 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
767 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
770 local k = 2*getid(gb) - getid(ga)
773 setglue(gb, blend_diffmet(
774 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
776 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
778 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
781 elseif k == bk_ak then
783 setfield(gb, 'kern', blend_diffmet(
784 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
787 elseif k == bk_ag then
788 -- gb: kern, ga: glue
789 setglue(ga, blend_diffmet(
790 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
792 0, getfield(ga, 'stretch'), db, da),
794 0, -getfield(ga, 'shrink'), db, da))
798 -- gb: glue, ga: kern
799 setglue(gb, blend_diffmet(
800 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
802 getfield(gb, 'stretch'), 0, db, da),
804 -getfield(gb, 'shrink'), 0, db, da))
811 local null_skip_table = {0, 0, 0}
813 local get_kanjiskip, kanjiskip_jfm_flag
814 local get_kanjiskip_low
815 local calc_ja_ja_glue
817 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
818 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
820 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
821 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
822 if kanjiskip_jfm_flag then
823 local g = node_new(id_glue);
824 local bk = qm.kanjiskip or null_skip_table
825 setglue(g, bn and (bn*bk[1]) or 0,
826 bp and (bp*bk[2]) or 0,
827 bh and (bh*bk[3]) or 0, 0, 0)
828 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
831 return node_copy(kanji_skip)
833 local g = node_new(id_glue);
835 bn and (bn*getfield(kanji_skip, 'width')) or 0,
836 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
837 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
839 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
845 get_kanjiskip = function()
846 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
848 elseif Np.auto_kspc or Nq.auto_kspc then
849 local pm, qm = Np.met, Nq.met
850 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
851 return get_kanjiskip_low(true, qm, 1, 1, 1)
853 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
854 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
855 return calc_ja_ja_aux(gb, ga, 0, 1)
858 local g = node_new(id_glue)
859 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
864 calc_ja_ja_glue = function ()
865 local qm, pm = Nq.met, Np.met
866 local qmc, pmc = qm.char_type, pm.char_type
867 if (qmc==pmc) and (qm.var==pm.var) then
868 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
869 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
871 local npn, nqn = Np.nuc, Nq.nuc
872 local gb, db, bn, bp, bh
873 = new_jfm_glue(qmc, Nq.class,
874 slow_find_char_class(Np.char,
876 local ga, da, an, ap, ah
878 slow_find_char_class(Nq.char,
881 local g = calc_ja_ja_aux(gb, ga, db, da)
883 if (pmc==qmc) and (qm.var==pm.var) then
884 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
885 ga = get_kanjiskip_low(false, pm, an, ap, ah)
886 k = calc_ja_ja_aux(gb, ga, db, da)
893 -------------------- 和欧文間空白量の決定
896 local get_xkanjiskip, xkanjiskip_jfm_flag
897 local get_xkanjiskip_normal, get_xkanjiskip_jfm
898 local get_xkanjiskip_low
900 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
901 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
903 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
904 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
905 if xkanjiskip_jfm_flag then
906 local g = node_new(id_glue);
907 local bk = qm.xkanjiskip or null_skip_table
908 setglue(g, bn and bk[1] or 0,
910 bh and bk[3] or 0, 0, 0)
911 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
914 return node_copy(xkanji_skip)
916 local g = node_new(id_glue);
918 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
919 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
920 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
922 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
928 get_xkanjiskip = function(Nn)
929 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
931 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
932 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
934 local g = node_new(id_glue)
935 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
941 -------------------- 隣接した「塊」間の処理
943 local function combine_spc(name)
944 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
947 -- NA, NB: alchar or math
948 local function get_NA_skip()
950 local g, _, kn, kp, kh = new_jfm_glue(
952 fast_find_char_class(
953 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
955 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
956 and get_xkanjiskip_low(false, pm, kn, kp, kh)
959 local function get_NB_skip()
961 local g, _, kn, kp, kh = new_jfm_glue(
962 qm.char_type, Nq.class,
963 fast_find_char_class(
964 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
966 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
967 and get_xkanjiskip_low(false, qm, kn, kp, kh)
971 local function get_OA_skip(is_kanji)
973 local g, _, kn, kp, kh = new_jfm_glue(
975 fast_find_char_class(
976 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
980 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
984 local function get_OB_skip(is_kanji)
986 local g, _, kn, kp, kh = new_jfm_glue(
987 qm.char_type, Nq.class,
988 fast_find_char_class(
989 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
992 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
997 -- (anything) .. jachar
998 local function handle_np_jachar(mode)
1000 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
1002 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
1003 if not g then g = get_kanjiskip() end
1004 handle_penalty_normal(Nq.post, Np.pre, g);
1005 real_insert(g); real_insert(k)
1006 elseif Nq.met then -- qid==id_hlist
1008 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
1009 if not g then g = get_kanjiskip() end
1010 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1013 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1014 if not g then g = get_xkanjiskip(Np) end
1015 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1016 real_insert(g); real_insert(k)
1018 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1019 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1020 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1021 else handle_penalty_always(0, Np.pre, g)
1025 if mode and Np.kcat%2~=1 then
1026 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1031 -- jachar .. (anything)
1032 local function handle_nq_jachar()
1034 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1035 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1037 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1038 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1039 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1040 else handle_penalty_always(Nq.post, 0, g)
1046 -- (anything) .. (和文文字で始まる hlist)
1047 local function handle_np_ja_hlist()
1049 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1050 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1051 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1052 elseif Nq.met then -- Nq.id==id_hlist
1053 local g = get_kanjiskip() -- K
1054 handle_penalty_suppress(0, 0, g); real_insert(g)
1056 local g = get_xkanjiskip(Np) -- X
1057 handle_penalty_suppress(0, 0, g); real_insert(g)
1061 -- (和文文字で終わる hlist) .. (anything)
1062 local function handle_nq_ja_hlist()
1064 local g = get_xkanjiskip(Nq) -- X
1065 handle_penalty_suppress(0, 0, g); real_insert(g)
1070 -- Nq が前側のクラスタとなることによる修正
1073 local adjust_nq_aux = {
1074 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1075 [id_hlist] = function() after_hlist(Nq) end,
1076 [id_pbox] = function() after_hlist(Nq) end,
1077 [id_disc] = function() after_hlist(Nq) end,
1078 [id_pbox_w] = function()
1079 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1084 adjust_nq=function()
1085 local x = adjust_nq_aux[Nq.id]
1091 -------------------- 開始・終了時の処理
1093 local node_prev = node.direct.getprev
1095 local function handle_list_tail(mode, last)
1098 -- the current list is to be line-breaked.
1099 -- Insert \jcharwidowpenalty
1100 if widow_Np.first then handle_penalty_jwp() end
1103 -- the current list is the contents of a hbox
1104 local npi, pm = Np.id, Np.met
1105 if npi == id_jglyph or (npi==id_pbox and pm) then
1106 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1108 set_attr(g, attr_icflag, BOXBDD)
1109 head = insert_after(head, Np.last, g)
1116 local function handle_list_head(par_indented)
1117 local npi, pm = Np.id, Np.met
1118 if npi == id_jglyph or (npi==id_pbox and pm) then
1119 if non_ihb_flag then
1120 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1122 set_attr(g, attr_icflag, BOXBDD)
1123 if getid(g)==id_glue and #Bp==0 then
1124 local h = node_new(id_penalty)
1125 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1127 head = insert_before(head, Np.first, g)
1134 -- return value: (the initial cursor lp), (last node)
1137 local id_local = node.id('local_par')
1138 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1139 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1140 local KSK = luatexja.stack_table_index.KSK
1141 local XSK = luatexja.stack_table_index.XSK
1142 local dir_yoko = luatexja.dir_table.dir_yoko
1143 local dir_tate = luatexja.dir_table.dir_tate
1144 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1145 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1146 local table_pool = {
1147 {}, {}, {first=nil},
1148 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1149 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1150 post=nil, pre=nil, xspc=nil, },
1151 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1152 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1153 post=nil, pre=nil, xspc=nil, },
1155 init_var = function (mode,dir)
1156 -- 1073741823: max_dimen
1157 Bp, widow_Bp, widow_Np, Np, Nq
1158 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1159 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1160 table_current_stack = ltjs.table_current_stack
1162 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1163 local is_dir_tate = list_dir==dir_tate
1164 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1165 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1166 local TEMP = node_new(id_glue)
1167 -- TEMP is a dummy node, which will be freed at the end of the callback.
1168 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1171 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1172 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1176 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1177 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1181 -- the current list is to be line-breaked:
1182 -- hbox from \parindent is skipped.
1183 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1185 ((lpi==id_whatsit and lps~=sid_user)
1186 or ((lpi==id_hlist) and (lps==3))
1187 or (lpi==id_local)) do
1188 if (lpi==id_hlist) and (lps==3) then
1189 Np.char, par_indented = 'parbdd', 'parbdd'
1190 Np.width = getfield(lp, 'width')
1192 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1193 return lp, node_tail(head), par_indented, TEMP
1195 return head, nil, 'boxbdd', TEMP
1200 local ensure_tex_attr = ltjb.ensure_tex_attr
1201 local function cleanup(mode, TEMP)
1202 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1203 -- adjust attr_icflag for avoiding error
1204 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1205 node_free(kanji_skip);
1206 node_free(xkanji_skip); node_free(TEMP)
1209 local h = node_next(head)
1210 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1212 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1219 -------------------- 外部から呼ばれる関数
1222 function luatexja.jfmglue.main(ahead, mode, dir)
1223 if not ahead then return ahead end
1224 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1227 local lp, last, par_indented, TEMP = init_var(mode,dir)
1228 lp = calc_np(last, lp)
1230 handle_list_head(par_indented)
1231 lp = calc_np(last,lp);
1234 local pid, pm = Np.id, Np.met
1236 if pid == id_jglyph then
1237 handle_np_jachar(mode)
1239 if pid==id_hlist then handle_np_ja_hlist()
1240 else handle_np_jachar() end
1242 if Nq.id==id_hlist then handle_nq_ja_hlist()
1243 else handle_nq_jachar() end
1245 lp = calc_np(last,lp)
1247 handle_list_tail(mode, last)
1249 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1251 return cleanup(mode, TEMP)
1256 local IHB = luatexja.userid_table.IHB
1257 local BPAR = luatexja.userid_table.BPAR
1258 local BOXB = luatexja.userid_table.BOXB
1259 local node_prev = node.direct.getprev
1260 local node_write = node.direct.write
1263 function luatexja.jfmglue.create_inhibitglue_node()
1264 local tn = node_new(id_whatsit, sid_user)
1265 setfield(tn, 'user_id', IHB)
1266 setfield(tn, 'type', 100)
1267 setfield(tn, 'value', 1)
1271 -- Node for indicating beginning of a paragraph
1272 -- (for ltjsclasses)
1273 function luatexja.jfmglue.create_beginpar_node()
1274 local tn = node_new(id_whatsit, sid_user)
1275 setfield(tn, 'user_id', BPAR)
1276 setfield(tn, 'type', 100)
1277 setfield(tn, 'value', 1)
1281 -- Node for indicating a head/end of a box
1282 function luatexja.jfmglue.create_boxbdd_node()
1283 local tn = node_new(id_whatsit, sid_user)
1284 setfield(tn, 'user_id', BOXB)
1285 setfield(tn, 'type', 100)
1286 setfield(tn, 'value', 1)
1290 local function whatsit_callback(Np, lp, Nq)
1291 if Np and Np.nuc then return Np
1292 elseif Np and getfield(lp, 'user_id') == BPAR then
1293 Np.first = lp; Np.nuc = lp; Np.last = lp
1295 elseif Np and getfield(lp, 'user_id') == BOXB then
1296 Np.first = lp; Np.nuc = lp; Np.last = lp
1299 Np.class = fast_find_char_class('boxbdd', Nq.met)
1301 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1302 Np.auto_xspc, Np.auto_kspc = 0, 0
1310 local function whatsit_after_callback(s, Nq, Np)
1311 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1312 local x, y = node_prev(Nq.nuc), Nq.nuc
1313 Nq.first, Nq.nuc, Nq.last = x, x, x
1316 Nq.class = fast_find_char_class('parbdd', Np.met)
1318 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1319 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1321 head = node_remove(head, y)
1323 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1324 local x, y = node_prev(Nq.nuc), Nq.nuc
1325 Nq.first, Nq.nuc, Nq.last = x, x, x
1328 Nq.class = fast_find_char_class('boxbdd', Np.met)
1330 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1331 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1333 head = node_remove(head, y)
1339 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1340 "luatexja.beginpar.np_info", 1)
1341 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1342 "luatexja.beginpar.np_info_after", 1)
1346 luatexja.jfmglue.after_hlist = after_hlist
1347 luatexja.jfmglue.check_box_high = check_box_high