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
32 local has_attr = node.direct.has_attribute
33 local set_attr = node.direct.set_attribute
34 local insert_before = node.direct.insert_before
35 local insert_after = node.direct.insert_after
36 local node_next = node.direct.getnext
37 local round = tex.round
38 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
39 local ltjf_font_metric_table = ltjf.font_metric_table
40 local ltjf_find_char_class = ltjf.find_char_class
41 local node_new = node.direct.new
42 local node_copy = node.direct.copy
43 local node_remove = node.direct.remove
44 local node_tail = node.direct.tail
45 local node_free = node.direct.free
46 local node_end_of_math = node.direct.end_of_math
48 local id_glyph = node.id('glyph')
49 local id_hlist = node.id('hlist')
50 local id_vlist = node.id('vlist')
51 local id_rule = node.id('rule')
52 local id_ins = node.id('ins')
53 local id_mark = node.id('mark')
54 local id_adjust = node.id('adjust')
55 local id_disc = node.id('disc')
56 local id_whatsit = node.id('whatsit')
57 local id_math = node.id('math')
58 local id_glue = node.id('glue')
59 local id_kern = node.id('kern')
60 local id_penalty = node.id('penalty')
62 local id_jglyph = 512 -- Japanese character
63 local id_box_like = 256 -- vbox, shifted hbox
64 local id_pbox = 257 -- already processed nodes (by \unhbox)
65 local id_pbox_w = 258 -- cluster which consists of a whatsit
66 local sid_user = node.subtype('user_defined')
67 local lang_ja = luatexja.lang_ja
69 local sid_start_link = node.subtype('pdf_start_link')
70 local sid_start_thread = node.subtype('pdf_start_thread')
71 local sid_end_link = node.subtype('pdf_end_link')
72 local sid_end_thread = node.subtype('pdf_end_thread')
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 luatexja.ext_show_node(to_node(g), 'sg ',print)
126 return g, (st.width==1073741823)
131 local function add_penalty(p,e)
132 local pp = getfield(p, 'penalty')
134 if e<=-10000 then setfield(p, 'penalty', 0) end
135 elseif pp<=-10000 then
136 if e>=10000 then setfield(p, 'penalty', 0) end
139 if pp>=10000 then setfield(p, 'penalty', 10000)
140 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
141 else setfield(p, 'penalty', pp) end
146 diffmet_rule = math.two_paverage
147 function math.two_add(a,b) return a+b end
148 function math.two_average(a,b) return (a+b)*0.5 end
149 function math.two_paverage(a,b) return (a+b)/2 end
150 function math.two_pleft(a,b) return a end
151 function math.two_pright(a,b) return b end
153 local head -- the head of current list
156 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
158 local non_ihb_flag -- JFM グルー挿入抑止用 flag
159 -- false: \inhibitglue 指定時 true: それ以外
161 -------------------- hlist 内の文字の検索
163 local first_char, last_char, find_first_char
165 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
166 local function check_box(box_ptr, box_end)
167 local p = box_ptr; local found_visible_node = false
169 find_first_char = false; last_char = nil
172 while p and p~=box_end do
174 if pid==id_kern and getsubtype(p)==2 then
175 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
177 if pid==id_glyph then
179 if find_first_char then
180 first_char = p; find_first_char = false
182 last_char = p; found_visible_node = true; p=node_next(p)
183 if (not p) or p==box_end then
184 return found_visible_node
186 until getid(p)~=id_glyph
187 pid = getid(p) -- p must be non-nil
190 local pa = get_attr_icflag(p)
191 if pa==IC_PROCESSED then
193 elseif getsubtype(p)==2 then
194 p = node_next(node_next(p));
195 -- Note that another node_next will be executed outside this if-statement.
197 found_visible_node = true
198 find_first_char = false; last_char = nil
200 elseif pid==id_hlist then
201 if PACKED == get_attr_icflag(p) then
202 local s = ltjd_glyph_from_packed(p)
203 if find_first_char then
204 first_char = s; find_first_char = false
206 last_char = s; found_visible_node = true
208 if getfield(p, 'shift')==0 then
210 if check_box(getlist(p), nil) then found_visible_node = true end
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 getfield(first_char, 'lang') == lang_ja 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 rule_subtype = (status.luatex_version>=85) and 3 or 0
306 local function calc_np_aux_glyph_common(lp)
308 Np.first= (Np.first or lp)
309 if getfield(lp, 'lang') == lang_ja then
311 local m, mc, cls = set_np_xspc_jachar(Np, lp)
313 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
314 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
316 return true, check_next_ickern(lp);
319 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
321 local first_glyph, last_glyph = lp
322 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
323 local y_adjust = has_attr(lp,attr_ablshift) or 0
324 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
325 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
326 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
328 for lx in traverse(lp) do
329 local lai = get_attr_icflag(lx)
330 if lx==last or lai>=PACKED then
333 local lid = getid(lx)
334 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
336 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
337 y_adjust = has_attr(lx,attr_ablshift) or 0
338 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
339 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
340 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
341 elseif lid==id_kern then
342 local ls = getsubtype(lx)
343 if ls==2 then -- アクセント用の kern
344 set_attr(lx, attr_icflag, PROCESSED)
345 lx = node_next(lx) -- lx: アクセント本体
346 if getid(lx)==id_glyph then
347 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
348 else -- アクセントは上下にシフトされている
349 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
351 lx = node_next(node_next(lx))
354 elseif (ls==3) or (lai==ITALIC) then
355 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
365 if adj_depth>node_depth then
366 r = node_new(id_rule,rule_subtype)
367 setfield(r, 'width', 0); setfield(r, 'height', 0)
368 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
369 set_attr(r, attr_icflag, PROCESSED)
372 Np.last_char = last_glyph
373 if r then insert_after(head, first_glyph, r) end
378 local nf, nc = getfont(npn), getchar(npn)
379 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
380 if not ct then -- variation selector
382 elseif (ct.left_protruding or 0) == 0 then
383 head = insert_before(head, npn, r)
384 Np.first = (Np.first==npn) and r or npn
385 elseif (ct.right_protruding or 0) == 0 then
386 insert_after(head, npn, r); Np.last, lp = r, r
388 ltjb.package_warning_no_line(
390 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
391 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
392 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
400 local calc_np_auxtable = {
401 [id_glyph] = calc_np_aux_glyph_common,
402 [id_hlist] = function(lp)
404 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
405 set_attr(op, attr_icflag, PROCESSED)
406 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
407 if (flag or getfield(op, 'shift')~=0) then
411 Np.last_char = check_box_high(Np, getlist(op), nil)
415 [id_vlist] = function(lp)
417 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
418 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
422 box_like = function(lp)
423 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
425 return true, node_next(lp)
428 set_attr(lp, attr_icflag, PROCESSED)
429 return false, node_next(lp)
431 [id_whatsit] = function(lp)
432 local lps = getsubtype(lp)
433 if lps==sid_user then
434 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
435 local lq = node_next(lp);
436 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
439 set_attr(lp, attr_icflag, PROCESSED)
440 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
443 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
444 return true, node_next(lp)
446 return false, node_next(lp)
450 -- we do special treatment for these whatsit nodes.
451 if lps == sid_start_link or lps == sid_start_thread then
453 elseif lps == sid_end_link or lps == sid_end_thread then
454 Np.first, Nq.last = nil, lp;
456 set_attr(lp, attr_icflag, PROCESSED)
457 return false, node_next(lp)
460 [id_math] = function(lp)
461 Np.first, Np.nuc = (Np.first or lp), lp;
462 set_attr(lp, attr_icflag, PROCESSED)
463 set_np_xspc_alchar(Np, -1, lp)
464 local end_math = node_end_of_math(lp)
465 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
466 set_attr(end_math, attr_icflag, PROCESSED)
467 Np.last, Np.id = end_math, id_math;
468 return true, node_next(end_math);
470 [id_glue] = function(lp)
471 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
472 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
473 return true, node_next(lp)
475 [id_disc] = function(lp)
476 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
477 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
478 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
479 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
480 return true, node_next(lp)
482 [id_kern] = function(lp)
483 if getsubtype(lp)==2 then
484 Np.first = Np.first or lp
485 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
486 if getid(lp)==id_glyph then -- アクセント本体
487 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
488 else -- アクセントは上下にシフトされている
489 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
491 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
492 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
493 set_attr(lp, attr_icflag, PROCESSED);
494 return calc_np_aux_glyph_common(lp)
496 Np.first = Np.first or lp
497 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
498 Np.last = lp; return true, node_next(lp)
501 [id_penalty] = function(lp)
502 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
503 return false, node_next(lp)
506 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
507 if status.luatex_version>=85 then
508 calc_np_auxtable[15] = calc_np_auxtable.box_like
510 calc_np_auxtable[13] = calc_np_auxtable.box_like
512 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
513 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
514 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
515 if node.id('local_par') then
516 calc_np_auxtable[node.id('local_par')] = calc_np_auxtable.skip
519 function calc_np(last, lp)
521 -- We assume lp = node_next(Np.last)
522 Np, Nq, non_ihb_flag = Nq, Np, true
523 -- We clear `predefined' entries of Np before pairs() loop,
524 -- because using only pairs() loop is slower.
525 Np.post, Np.pre, Np.xspc = nil, nil, nil
526 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
527 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
528 for k in pairs(Np) do Np[k] = nil end
530 for k = 1,#Bp do Bp[k] = nil end
532 local lpa = has_attr(lp, attr_icflag) or 0
535 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
536 local lq = node_next(lp)
537 head = node_remove(head, lp); node_free(lp); lp = lq
539 return calc_np_pbox(lp, last)
542 k, lp = calc_np_auxtable[getid(lp)](lp)
543 if k then return lp end
550 -- extract informations from Np
551 -- We think that "Np is a Japanese character" if Np.met~=nil,
552 -- "Np is an alphabetic character" if Np.pre~=nil,
553 -- "Np is not a character" otherwise.
554 after_hlist = nil -- global
555 local after_alchar, extract_np
557 local PRE = luatexja.stack_table_index.PRE
558 local POST = luatexja.stack_table_index.POST
559 local KCAT = luatexja.stack_table_index.KCAT
560 local XSP = luatexja.stack_table_index.XSP
561 local dir_tate = luatexja.dir_table.dir_tate
564 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
565 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
566 local attr_autospc = luatexbase.attributes['ltj@autospc']
567 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
568 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
569 function set_np_xspc_jachar(Nx, x)
570 local m = ltjf_font_metric_table[getfont(x)]
571 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
573 local cls = slow_find_char_class(c, m, c_glyph)
574 Nx.met, Nx.class, Nx.char = m, cls, c;
575 local mc = m.char_type; Nx.char_type = mc
576 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
577 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
578 Nx.pre = table_current_stack[PRE + c] or 0
579 Nx.post = table_current_stack[POST + c] or 0
580 Nx.xspc = table_current_stack[XSP + c] or 3
581 Nx.kcat = table_current_stack[KCAT + c] or 0
582 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
585 function set_np_xspc_jachar_hbox(Nx, x)
586 local m = ltjf_font_metric_table[getfont(x)]
587 local c = has_attr(x, attr_jchar_code) or getchar(x)
588 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
589 local mc = m.char_type; Nx.char_type = mc
590 Nx.pre = table_current_stack[PRE + c] or 0
591 Nx.post = table_current_stack[POST + c] or 0
592 Nx.xspc = table_current_stack[XSP + c] or 3
593 Nx.kcat = table_current_stack[KCAT + c] or 0
594 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
598 local floor = math.floor
599 function set_np_xspc_alchar(Nx, c,x, lig)
601 local f = (lig ==1) and nullfunc or node_tail
602 local xc, xs = getfield(x, 'components'), getsubtype(x)
603 while xc and xs and xs%4>=2 do
604 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
607 Nx.pre = table_current_stack[PRE + c] or 0
608 Nx.post = table_current_stack[POST + c] or 0
609 Nx.xspc = table_current_stack[XSP + c] or 3
611 Nx.pre, Nx.post = 0, 0
612 Nx.xspc = table_current_stack[XSP - 1] or 3
615 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
617 local set_np_xspc_alchar = set_np_xspc_alchar
619 -- change the information for the next loop
620 -- (will be done if Nx is an alphabetic character or a hlist)
621 after_hlist = function (Nx)
622 local s = Nx.last_char
624 if getid(s)==id_glyph then
625 if getfield(s, 'lang') == lang_ja then
626 set_np_xspc_jachar_hbox(Nx, s)
628 set_np_xspc_alchar(Nx, getchar(s), s, 2)
631 set_np_xspc_alchar(Nx, -1, s)
634 Nx.pre, Nx.met = nil, nil
638 after_alchar = function (Nx)
639 local x = Nx.last_char
640 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
645 -------------------- 最下層の処理
647 -- change penalties (or create a new penalty, if needed)
648 local function handle_penalty_normal(post, pre, g)
649 local a = (pre or 0) + (post or 0)
651 if (a~=0 and not(g and getid(g)==id_kern)) then
652 local p = node_new(id_penalty)
653 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
654 setfield(p, 'penalty', a)
655 head = insert_before(head, Np.first, p)
657 set_attr(p, attr_icflag, KINSOKU)
659 else for _, v in pairs(Bp) do add_penalty(v,a) end
663 local function handle_penalty_always(post, pre, g)
664 local a = (pre or 0) + (post or 0)
666 if not (g and getid(g)==id_glue) or a~=0 then
667 local p = node_new(id_penalty)
668 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
669 setfield(p, 'penalty', a)
670 head = insert_before(head, Np.first, p)
672 set_attr(p, attr_icflag, KINSOKU)
674 else for _, v in pairs(Bp) do add_penalty(v,a) end
678 local function handle_penalty_suppress(post, pre, g)
679 local a = (pre or 0) + (post or 0)
681 if g and getid(g)==id_glue then
682 local p = node_new(id_penalty)
683 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
685 set_attr(p, attr_icflag, KINSOKU)
687 else for _, v in pairs(Bp) do add_penalty(v,a) end
691 -- 和文文字間の JFM glue を node 化
692 local function new_jfm_glue(mc, bc, ac)
693 -- bc, ac: char classes
697 return node_copy(g[1]), g.ratio, false, false, false
699 local f = node_new(id_glue)
700 set_attr(f, attr_icflag, g.priority)
701 setglue(f, g.width, g.stretch, g.shrink)
702 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
708 -- Nq.last (kern w) .... (glue/kern g) Np.first
709 local function real_insert(g)
711 head = insert_before(head, Np.first, g)
717 -------------------- 和文文字間空白量の決定
720 local bg_ag = 2*id_glue - id_glue
721 local bg_ak = 2*id_glue - id_kern
722 local bk_ag = 2*id_kern - id_glue
723 local bk_ak = 2*id_kern - id_kern
725 local function blend_diffmet(b, a, rb, ra)
726 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
728 calc_ja_ja_aux = function (gb, ga, db, da)
729 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
730 and diffmet_rule ~= math.two_paverage then
735 gb = node_new(id_kern); setfield(gb, 'kern', 0)
738 ga = node_new(id_kern); setfield(ga, 'kern', 0)
741 local k = 2*getid(gb) - getid(ga)
744 setglue(gb, blend_diffmet(
745 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
747 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
749 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
752 elseif k == bk_ak then
754 setfield(gb, 'kern', blend_diffmet(
755 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
758 elseif k == bk_ag then
759 -- gb: kern, ga: glue
760 setglue(ga, blend_diffmet(
761 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
763 0, getfield(ga, 'stretch'), db, da),
765 0, -getfield(ga, 'shrink'), db, da))
769 -- gb: glue, ga: kern
770 setglue(gb, blend_diffmet(
771 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
773 getfield(gb, 'stretch'), 0, db, da),
775 -getfield(gb, 'shrink'), 0, db, da))
782 local null_skip_table = {0, 0, 0}
784 local get_kanjiskip, kanjiskip_jfm_flag
785 local calc_ja_ja_glue
787 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
788 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
790 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
791 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
792 if kanjiskip_jfm_flag then
793 local g = node_new(id_glue);
794 local bk = qm.kanjiskip or null_skip_table
795 setglue(g, bn and (bn*bk[1]) or 0,
796 bp and (bp*bk[2]) or 0,
797 bh and (bh*bk[3]) or 0, 0, 0)
798 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
801 return node_copy(kanji_skip)
803 local g = node_new(id_glue);
805 bn and (bn*getfield(kanji_skip, 'width')) or 0,
806 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
807 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
809 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
815 get_kanjiskip = function()
816 if Np.auto_kspc or Nq.auto_kspc then
817 local pm, qm = Np.met, Nq.met
818 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
819 return get_kanjiskip_low(true, qm, 1, 1, 1)
821 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
822 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
823 return calc_ja_ja_aux(gb, ga, 0, 1)
826 local g = node_new(id_glue)
827 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
832 calc_ja_ja_glue = function ()
833 local qm, pm = Nq.met, Np.met
834 local qmc, pmc = qm.char_type, pm.char_type
835 if (qmc==pmc) and (qm.var==pm.var) then
836 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
837 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
839 local npn, nqn = Np.nuc, Nq.nuc
840 local gb, db, bn, bp, bh
841 = new_jfm_glue(qmc, Nq.class,
842 slow_find_char_class(Np.char,
844 local ga, da, an, ap, ah
846 slow_find_char_class(Nq.char,
849 local g = calc_ja_ja_aux(gb, ga, db, da)
851 if (pmc==qmc) and (qm.var==pm.var) then
852 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
853 ga = get_kanjiskip_low(false, pm, an, ap, ah)
854 k = calc_ja_ja_aux(gb, ga, db, da)
861 -------------------- 和欧文間空白量の決定
864 local get_xkanjiskip, xkanjiskip_jfm_flag
865 local get_xkanjiskip_normal, get_xkanjiskip_jfm
867 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
868 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
870 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
871 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
872 if xkanjiskip_jfm_flag then
873 local g = node_new(id_glue);
874 local bk = qm.xkanjiskip or null_skip_table
875 setglue(g, bn and bk[1] or 0,
877 bh and bk[3] or 0, 0, 0)
878 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
881 return node_copy(xkanji_skip)
883 local g = node_new(id_glue);
885 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
886 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
887 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
889 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
895 get_xkanjiskip = function(Nn)
896 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
897 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
899 local g = node_new(id_glue)
900 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
906 -------------------- 隣接した「塊」間の処理
908 local function get_OA_skip(is_kanji)
910 local g, _, kn, kp, kh = new_jfm_glue(
912 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
916 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, pm, kn, kp, kh)
917 elseif is_kanji==1 then
918 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
919 and get_xkanjiskip_low(false, pm, kn, kp, kh)
923 local function get_OB_skip(is_kanji)
925 local g, _, kn, kp, kh = new_jfm_glue(
926 qm.char_type, Nq.class,
927 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
930 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
931 elseif is_kanji==1 then
932 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
933 and get_xkanjiskip_low(false, qm, kn, kp, kh)
938 -- (anything) .. jachar
939 local function handle_np_jachar(mode)
941 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
943 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
944 if not g then g = get_kanjiskip() end
945 handle_penalty_normal(Nq.post, Np.pre, g);
946 real_insert(g); real_insert(k)
947 elseif Nq.met then -- qid==id_hlist
949 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
950 if not g then g = get_kanjiskip() end
951 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
954 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
955 if not g then g = get_xkanjiskip(Np) end
956 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
957 real_insert(g); real_insert(k)
959 local g = non_ihb_flag and (get_OA_skip()) -- O_A
960 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
961 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
962 else handle_penalty_always(0, Np.pre, g)
966 if mode and Np.kcat%2~=1 then
967 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
972 -- jachar .. (anything)
973 local function handle_nq_jachar()
975 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
976 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
978 local g =non_ihb_flag and (get_OB_skip()) -- O_B
979 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
980 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
981 else handle_penalty_always(Nq.post, 0, g)
987 -- (anything) .. (和文文字で始まる hlist)
988 local function handle_np_ja_hlist()
990 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
991 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
992 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
993 elseif Nq.met then -- Nq.id==id_hlist
994 local g = get_kanjiskip() -- K
995 handle_penalty_suppress(0, 0, g); real_insert(g)
997 local g = get_xkanjiskip(Np) -- X
998 handle_penalty_suppress(0, 0, g); real_insert(g)
1002 -- (和文文字で終わる hlist) .. (anything)
1003 local function handle_nq_ja_hlist()
1005 local g = get_xkanjiskip(Nq) -- X
1006 handle_penalty_suppress(0, 0, g); real_insert(g)
1011 -- Nq が前側のクラスタとなることによる修正
1013 local adjust_nq_aux = {
1014 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1015 [id_hlist] = function() after_hlist(Nq) end,
1016 [id_pbox] = function() after_hlist(Nq) end,
1017 [id_disc] = function() after_hlist(Nq) end,
1018 [id_pbox_w] = function()
1019 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1024 function adjust_nq()
1025 local x = adjust_nq_aux[Nq.id]
1031 -------------------- 開始・終了時の処理
1035 local JWP = luatexja.stack_table_index.JWP
1036 local function handle_list_tail(mode)
1037 adjust_nq(); Np = Nq
1039 -- the current list is to be line-breaked.
1040 -- Insert \jcharwidowpenalty
1041 Bp = widow_Bp; Np = widow_Np
1043 handle_penalty_normal(0, table_current_stack[JWP] or 0)
1046 -- the current list is the contents of a hbox
1047 local npi, pm = Np.id, Np.met
1048 if npi == id_jglyph or (npi==id_pbox and pm) then
1049 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1051 set_attr(g, attr_icflag, BOXBDD)
1052 head = insert_after(head, Np.last, g)
1059 local function handle_list_head(par_indented)
1060 local npi, pm = Np.id, Np.met
1061 if npi == id_jglyph or (npi==id_pbox and pm) then
1062 if non_ihb_flag then
1063 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1065 set_attr(g, attr_icflag, BOXBDD)
1066 if getid(g)==id_glue and #Bp==0 then
1067 local h = node_new(id_penalty)
1068 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1070 head = insert_before(head, Np.first, g)
1077 -- return value: (the initial cursor lp), (last node)
1080 local id_local = node.id('local_par')
1081 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1082 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1083 local KSK = luatexja.stack_table_index.KSK
1084 local XSK = luatexja.stack_table_index.XSK
1085 local dir_yoko = luatexja.dir_table.dir_yoko
1086 local dir_tate = luatexja.dir_table.dir_tate
1087 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1088 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1089 local table_pool = {
1090 {}, {}, {first=nil},
1091 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1092 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1093 post=nil, pre=nil, xspc=nil, },
1094 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1095 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1096 post=nil, pre=nil, xspc=nil, },
1098 init_var = function (mode,dir)
1099 -- 1073741823: max_dimen
1100 Bp, widow_Bp, widow_Np, Np, Nq
1101 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1102 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1103 table_current_stack = ltjs.table_current_stack
1105 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1106 local is_dir_tate = list_dir==dir_tate
1107 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1108 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1109 local TEMP = node_new(id_glue)
1110 -- TEMP is a dummy node, which will be freed at the end of the callback.
1111 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1114 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1115 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1119 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1120 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1124 -- the current list is to be line-breaked:
1125 -- hbox from \parindent is skipped.
1126 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1128 ((lpi==id_whatsit and lps~=sid_user)
1129 or ((lpi==id_hlist) and (lps==3))
1130 or (lpi==id_local)) do
1131 if (lpi==id_hlist) and (lps==3) then
1132 Np.char, par_indented = 'parbdd', 'parbdd'
1133 Np.width = getfield(lp, 'width')
1135 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1136 return lp, node_tail(head), par_indented, TEMP
1138 return head, nil, 'boxbdd', TEMP
1143 local ensure_tex_attr = ltjb.ensure_tex_attr
1144 local function cleanup(mode, TEMP)
1145 -- adjust attr_icflag for avoiding error
1146 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1147 node_free(kanji_skip);
1148 node_free(xkanji_skip); node_free(TEMP)
1151 local h = node_next(head)
1152 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1154 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1161 -------------------- 外部から呼ばれる関数
1164 function main(ahead, mode, dir)
1165 if not ahead then return ahead end
1167 local lp, last, par_indented, TEMP = init_var(mode,dir)
1168 lp = calc_np(last, lp)
1170 handle_list_head(par_indented)
1171 lp = calc_np(last,lp);
1174 local pid, pm = Np.id, Np.met
1176 if pid == id_jglyph then
1177 handle_np_jachar(mode)
1179 if pid==id_hlist then handle_np_ja_hlist()
1180 else handle_np_jachar() end
1182 if Nq.id==id_hlist then handle_nq_ja_hlist()
1183 else handle_nq_jachar() end
1185 lp = calc_np(last,lp)
1187 handle_list_tail(mode)
1189 return cleanup(mode, TEMP)
1194 local IHB = luatexja.userid_table.IHB
1195 local BPAR = luatexja.userid_table.BPAR
1196 local node_prev = node.direct.getprev
1197 local node_write = node.direct.write
1200 function create_inhibitglue_node()
1201 local tn = node_new(id_whatsit, sid_user)
1202 setfield(tn, 'user_id', IHB)
1203 setfield(tn, 'type', 100)
1204 setfield(tn, 'value', 1)
1208 -- Node for indicating beginning of a paragraph
1209 -- (for ltjsclasses)
1210 function create_beginpar_node()
1211 local tn = node_new(id_whatsit, sid_user)
1212 setfield(tn, 'user_id', BPAR)
1213 setfield(tn, 'type', 100)
1214 setfield(tn, 'value', 1)
1218 local function whatsit_callback(Np, lp, Nq)
1219 if Np and Np.nuc then return Np
1220 elseif Np and getfield(lp, 'user_id') == BPAR then
1221 Np.first = lp; Np.nuc = lp; Np.last = lp
1226 local function whatsit_after_callback(s, Nq, Np)
1227 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1228 local x, y = node_prev(Nq.nuc), Nq.nuc
1229 Nq.first, Nq.nuc, Nq.last = x, x, x
1232 Nq.class = fast_find_char_class('parbdd', Np.met)
1234 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1235 Nq.auto_xspc = false
1237 head = node_remove(head, y)
1243 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1244 "luatexja.beginpar.np_info", 1)
1245 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1246 "luatexja.beginpar.np_info_after", 1)