2 -- luatexja/ltj-jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues and kanjiskip',
9 module('luatexja.jfmglue', package.seeall)
10 local err, warn, info, log = luatexbase .errwarinf(_NAME)
12 luatexja.load_module('base'); local ltjb = luatexja.base
13 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('direction'); local ltjd = luatexja.direction
16 luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
19 local nullfunc = function(n) return n end
20 local to_node = node.direct.tonode
21 local to_direct = node.direct.todirect
23 local setfield = node.direct.setfield
24 local setglue = luatexja.setglue
25 local getfield = node.direct.getfield
26 local getid = node.direct.getid
27 local getfont = node.direct.getfont
28 local getlist = node.direct.getlist
29 local getchar = node.direct.getchar
30 local getsubtype = node.direct.getsubtype
33 local lang_ja = luatexja.lang_ja
34 local getlang = node.direct.getlang
36 and function (n) return getlang(n)==lang_ja end
37 or function (n) return getfield(n,'lang')==lang_ja end
40 local has_attr = node.direct.has_attribute
41 local set_attr = node.direct.set_attribute
42 local insert_before = node.direct.insert_before
43 local insert_after = node.direct.insert_after
44 local node_next = node.direct.getnext
45 local round = tex.round
46 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
47 local ltjf_font_metric_table = ltjf.font_metric_table
48 local ltjf_find_char_class = ltjf.find_char_class
49 local node_new = node.direct.new
50 local node_copy = node.direct.copy
51 local node_remove = node.direct.remove
52 local node_tail = node.direct.tail
53 local node_free = node.direct.free
54 local node_end_of_math = node.direct.end_of_math
56 local id_glyph = node.id('glyph')
57 local id_hlist = node.id('hlist')
58 local id_vlist = node.id('vlist')
59 local id_rule = node.id('rule')
60 local id_ins = node.id('ins')
61 local id_mark = node.id('mark')
62 local id_adjust = node.id('adjust')
63 local id_disc = node.id('disc')
64 local id_whatsit = node.id('whatsit')
65 local id_math = node.id('math')
66 local id_glue = node.id('glue')
67 local id_kern = node.id('kern')
68 local id_penalty = node.id('penalty')
70 local id_jglyph = 512 -- Japanese character
71 local id_box_like = 256 -- vbox, shifted hbox
72 local id_pbox = 257 -- already processed nodes (by \unhbox)
73 local id_pbox_w = 258 -- cluster which consists of a whatsit
74 local sid_user = node.subtype('user_defined')
76 local sid_start_link = node.subtype('pdf_start_link')
77 local sid_start_thread = node.subtype('pdf_start_thread')
78 local sid_end_link = node.subtype('pdf_end_link')
79 local sid_end_thread = node.subtype('pdf_end_thread')
81 local ITALIC = luatexja.icflag_table.ITALIC
82 local PACKED = luatexja.icflag_table.PACKED
83 local KINSOKU = luatexja.icflag_table.KINSOKU
84 local FROM_JFM = luatexja.icflag_table.FROM_JFM
85 local PROCESSED = luatexja.icflag_table.PROCESSED
86 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
87 local BOXBDD = luatexja.icflag_table.BOXBDD
88 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
90 local attr_icflag = luatexbase.attributes['ltj@icflag']
93 local table_current_stack
98 local set_np_xspc_jachar
99 local set_np_xspc_jachar_hbox
101 local ltjs_orig_char_table = ltjs.orig_char_table
103 local function get_attr_icflag(p)
104 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
107 -------------------- Helper functions
109 -- This function is called only for acquiring `special' characters.
110 local function fast_find_char_class(c,m)
111 return m.chars[c] or 0
115 local slow_find_char_class
117 local start_time_measure = ltjb.start_time_measure
118 local stop_time_measure = ltjb.stop_time_measure
119 slow_find_char_class = function (c, m, oc)
120 local cls = ltjf_find_char_class(oc, m)
121 if oc~=c and c and cls==0 then
122 return ltjf_find_char_class(c, m)
129 local function skip_table_to_glue(n)
130 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
131 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
132 return g, (st.width==1073741823)
137 local function add_penalty(p,e)
138 local pp = getfield(p, 'penalty')
140 if e<=-10000 then setfield(p, 'penalty', 0) end
141 elseif pp<=-10000 then
142 if e>=10000 then setfield(p, 'penalty', 0) end
145 if pp>=10000 then setfield(p, 'penalty', 10000)
146 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
147 else setfield(p, 'penalty', pp) end
152 diffmet_rule = math.two_paverage
153 function math.two_add(a,b) return a+b end
154 function math.two_average(a,b) return (a+b)*0.5 end
155 function math.two_paverage(a,b) return (a+b)/2 end
156 function math.two_pleft(a,b) return a end
157 function math.two_pright(a,b) return b end
159 local head -- the head of current list
162 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
164 local non_ihb_flag -- JFM グルー挿入抑止用 flag
165 -- false: \inhibitglue 指定時 true: それ以外
167 -------------------- hlist 内の文字の検索
169 local first_char, last_char, find_first_char
171 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
172 local function check_box(box_ptr, box_end)
173 local p = box_ptr; local found_visible_node = false
175 find_first_char = false; last_char = nil
178 while p and p~=box_end do
180 if pid==id_kern and getsubtype(p)==2 then
181 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
183 if pid==id_glyph then
185 if find_first_char then
186 first_char = p; find_first_char = false
188 last_char = p; found_visible_node = true; p=node_next(p)
189 if (not p) or p==box_end then
190 return found_visible_node
192 until getid(p)~=id_glyph
193 pid = getid(p) -- p must be non-nil
196 local pa = get_attr_icflag(p)
197 if pa==IC_PROCESSED then
199 elseif getsubtype(p)==2 then
200 p = node_next(node_next(p));
201 -- Note that another node_next will be executed outside this if-statement.
203 found_visible_node = true
204 find_first_char = false; last_char = nil
206 elseif pid==id_hlist then
207 if PACKED == get_attr_icflag(p) then
208 local s = ltjd_glyph_from_packed(p)
209 if find_first_char then
210 first_char = s; find_first_char = false
212 last_char = s; found_visible_node = true
214 if getfield(p, 'shift')==0 then
216 if check_box(getlist(p), nil) then found_visible_node = true end
218 find_first_char = false; last_char = nil
221 elseif pid==id_math then
222 if find_first_char then
223 first_char = p; find_first_char = false
225 last_char = p; found_visible_node = true
226 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
228 elseif not (pid==id_ins or pid==id_mark
229 or pid==id_adjust or pid==id_whatsit
230 or pid==id_penalty) then
231 found_visible_node = true
232 find_first_char = false; last_char = nil
236 return found_visible_node
239 function check_box_high(Nx, box_ptr, box_end)
240 first_char = nil; last_char = nil; find_first_char = true
241 if check_box(box_ptr, box_end) then
242 local first_char = first_char
244 if getid(first_char)==id_glyph then
245 if if_lang_ja(first_char) then
246 set_np_xspc_jachar_hbox(Nx, first_char)
248 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
251 set_np_xspc_alchar(Nx, -1,first_char)
258 -------------------- Np の計算と情報取得
260 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
261 function (Np, lp, Nq)
262 if Np.nuc then return Np
264 return Np -- your code
267 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
268 function (stat, Nq, Np) return false end)
274 local traverse = node.direct.traverse
275 local function check_next_ickern(lp)
276 if lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) then
277 set_attr(lp, attr_icflag, IC_PROCESSED);
278 Np.last = lp; return node_next(lp)
280 Np.last = Np.nuc; return lp
284 local function calc_np_pbox(lp, last)
285 local first, lpa, nc = (not Np.first), KINSOKU, nil
286 Np.first = Np.first or lp; Np.id = id_pbox
287 set_attr(lp, attr_icflag, get_attr_icflag(lp));
288 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
289 local lpi = getid(lp)
290 if lpi==id_hlist or lpi==id_vlist then
291 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
292 Np.first = first and nc or Np.first
293 elseif (lpi==id_rule) and (lpa==PACKED) then
295 nc, lp = lp, node_next(lp)
297 nc, lp = lp, node_next(lp)
299 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
300 -- get_attr_icflag() ではいけない!
303 lp = check_next_ickern(lp)
304 Np.last_char = check_box_high(Np, Np.first, lp)
308 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
309 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
310 local min, max = math.min, math.max
311 local function calc_np_aux_glyph_common(lp, acc_flag)
313 Np.first= (Np.first or lp)
314 if if_lang_ja(lp) then
316 local m, mc, cls = set_np_xspc_jachar(Np, lp)
318 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
319 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
321 return true, check_next_ickern(lp);
324 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
326 local first_glyph, last_glyph = lp
327 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
328 local y_adjust = has_attr(lp,attr_ablshift) or 0
329 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
330 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
331 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
333 for lx in traverse(lp) do
334 local lai = get_attr_icflag(lx)
335 if lx==last or lai>=PACKED then
338 local lid = getid(lx)
339 if lid==id_glyph and not if_lang_ja(lx) then
341 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
342 y_adjust = has_attr(lx,attr_ablshift) or 0
343 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
344 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
345 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
346 elseif lid==id_kern then
347 local ls = getsubtype(lx)
348 if ls==2 then -- アクセント用の kern
349 set_attr(lx, attr_icflag, PROCESSED)
350 lx = node_next(lx) -- lx: アクセント本体
351 if getid(lx)==id_glyph then
352 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
353 else -- アクセントは上下にシフトされている
354 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
356 lx = node_next(node_next(lx))
359 elseif (ls==3) or (lai==ITALIC) then
360 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
370 if adj_depth>node_depth then
371 r = node_new(id_rule,3)
372 setfield(r, 'width', 0); setfield(r, 'height', 0)
373 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
374 set_attr(r, attr_icflag, PROCESSED)
377 Np.last_char = last_glyph
378 if r then insert_after(head, first_glyph, r) end
383 local nf, nc = getfont(npn), getchar(npn)
384 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
385 if not ct then -- variation selector
387 elseif (ct.left_protruding or 0) == 0 then
388 head = insert_before(head, npn, r)
389 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
390 elseif (ct.right_protruding or 0) == 0 then
391 insert_after(head, npn, r); Np.last, lp = r, r
393 ltjb.package_warning_no_line(
395 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
396 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
397 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
405 local calc_np_auxtable
407 local dir_tate = luatexja.dir_table.dir_tate
409 [id_glyph] = calc_np_aux_glyph_common,
410 [id_hlist] = function(lp)
412 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
413 set_attr(op, attr_icflag, PROCESSED)
414 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
415 if (flag or getfield(op, 'shift')~=0) then
419 Np.last_char = check_box_high(Np, getlist(op), nil)
423 [id_vlist] = function(lp)
425 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
426 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
430 box_like = function(lp)
431 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
433 return true, node_next(lp)
435 [id_whatsit] = function(lp)
436 local lps = getsubtype(lp)
437 if lps==sid_user then
438 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
439 local lq = node_next(lp);
440 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
443 set_attr(lp, attr_icflag, PROCESSED)
444 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
447 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
448 return true, node_next(lp)
450 return false, node_next(lp)
454 -- we do special treatment for these whatsit nodes.
455 if lps == sid_start_link or lps == sid_start_thread then
457 elseif lps == sid_end_link or lps == sid_end_thread then
458 Np.first, Nq.last = nil, lp;
460 set_attr(lp, attr_icflag, PROCESSED)
461 return false, node_next(lp)
464 [id_math] = function(lp)
465 Np.first, Np.nuc = (Np.first or lp), lp;
466 set_attr(lp, attr_icflag, PROCESSED)
467 set_np_xspc_alchar(Np, -1, lp)
468 local end_math = node_end_of_math(lp)
469 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
470 set_attr(end_math, attr_icflag, PROCESSED)
471 Np.last, Np.id = end_math, id_math;
472 return true, node_next(end_math);
474 [id_glue] = function(lp)
475 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
476 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
477 return true, node_next(lp)
479 [id_disc] = function(lp)
480 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
481 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
482 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
483 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
484 return true, node_next(lp)
486 [id_kern] = function(lp)
487 if getsubtype(lp)==2 then
488 Np.first = Np.first or lp
489 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
490 if getid(lp)==id_glyph then -- アクセント本体
491 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
492 else -- アクセントは上下にシフトされている
493 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
495 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
496 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
497 set_attr(lp, attr_icflag, PROCESSED);
498 return calc_np_aux_glyph_common(lp, true)
500 Np.first = Np.first or lp
501 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
502 Np.last = lp; return true, node_next(lp)
505 [id_penalty] = function(lp)
506 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
507 return false, node_next(lp)
511 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
512 calc_np_auxtable[15] = calc_np_auxtable.box_like
514 local function calc_np_aux_skip (lp)
515 set_attr(lp, attr_icflag, PROCESSED)
516 return false, node_next(lp)
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)] or calc_np_aux_skip)(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 if_lang_ja(s) 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 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', nullfunc)
649 -- change penalties (or create a new penalty, if needed)
650 local function handle_penalty_normal(post, pre, g)
651 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
652 local a = (pre or 0) + (post or 0)
654 if (a~=0 and not(g and getid(g)==id_kern)) then
655 local p = node_new(id_penalty)
656 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
657 setfield(p, 'penalty', a)
658 head = insert_before(head, Np.first, p)
660 set_attr(p, attr_icflag, KINSOKU)
662 else for _, v in pairs(Bp) do add_penalty(v,a) end
666 local function handle_penalty_always(post, pre, g)
667 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
668 local a = (pre or 0) + (post or 0)
670 if not (g and getid(g)==id_glue) or a~=0 then
671 local p = node_new(id_penalty)
672 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
673 setfield(p, 'penalty', a)
674 head = insert_before(head, Np.first, p)
676 set_attr(p, attr_icflag, KINSOKU)
678 else for _, v in pairs(Bp) do add_penalty(v,a) end
682 local function handle_penalty_suppress(post, pre, g)
683 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
685 if g and getid(g)==id_glue then
686 local p = node_new(id_penalty)
687 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
689 set_attr(p, attr_icflag, KINSOKU)
692 local a = (pre or 0) + (post or 0)
693 for _, v in pairs(Bp) do add_penalty(v,a) end
697 local function handle_penalty_jwp()
698 local a = table_current_stack[luatexja.stack_table_index.JWP]
699 if #widow_Bp == 0 then
701 local p = node_new(id_penalty)
702 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
703 setfield(p, 'penalty', a)
704 head = insert_before(head, widow_Np.first, p)
706 set_attr(p, attr_icflag, KINSOKU)
708 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
712 -- 和文文字間の JFM glue を node 化
713 local function new_jfm_glue(mc, bc, ac)
714 -- bc, ac: char classes
718 return node_copy(g[1]), g.ratio, false, false, false
720 local f = node_new(id_glue)
721 set_attr(f, attr_icflag, g.priority)
722 setglue(f, g.width, g.stretch, g.shrink)
723 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
729 -- Nq.last (kern w) .... (glue/kern g) Np.first
730 local function real_insert(g)
732 head = insert_before(head, Np.first, g)
738 -------------------- 和文文字間空白量の決定
741 local bg_ag = 2*id_glue - id_glue
742 local bg_ak = 2*id_glue - id_kern
743 local bk_ag = 2*id_kern - id_glue
744 local bk_ak = 2*id_kern - id_kern
746 local function blend_diffmet(b, a, rb, ra)
747 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
749 calc_ja_ja_aux = function (gb, ga, db, da)
750 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
751 and diffmet_rule ~= math.two_paverage then
756 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
759 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
762 local k = 2*getid(gb) - getid(ga)
765 setglue(gb, blend_diffmet(
766 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
768 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
770 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
773 elseif k == bk_ak then
775 setfield(gb, 'kern', blend_diffmet(
776 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
779 elseif k == bk_ag then
780 -- gb: kern, ga: glue
781 setglue(ga, blend_diffmet(
782 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
784 0, getfield(ga, 'stretch'), db, da),
786 0, -getfield(ga, 'shrink'), db, da))
790 -- gb: glue, ga: kern
791 setglue(gb, blend_diffmet(
792 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
794 getfield(gb, 'stretch'), 0, db, da),
796 -getfield(gb, 'shrink'), 0, db, da))
803 local null_skip_table = {0, 0, 0}
805 local get_kanjiskip, kanjiskip_jfm_flag
806 local calc_ja_ja_glue
808 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
809 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
811 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
812 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
813 if kanjiskip_jfm_flag then
814 local g = node_new(id_glue);
815 local bk = qm.kanjiskip or null_skip_table
816 setglue(g, bn and (bn*bk[1]) or 0,
817 bp and (bp*bk[2]) or 0,
818 bh and (bh*bk[3]) or 0, 0, 0)
819 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
822 return node_copy(kanji_skip)
824 local g = node_new(id_glue);
826 bn and (bn*getfield(kanji_skip, 'width')) or 0,
827 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
828 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
830 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
836 get_kanjiskip = function()
837 if Np.auto_kspc or Nq.auto_kspc then
838 local pm, qm = Np.met, Nq.met
839 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
840 return get_kanjiskip_low(true, qm, 1, 1, 1)
842 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
843 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
844 return calc_ja_ja_aux(gb, ga, 0, 1)
847 local g = node_new(id_glue)
848 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
853 calc_ja_ja_glue = function ()
854 local qm, pm = Nq.met, Np.met
855 local qmc, pmc = qm.char_type, pm.char_type
856 if (qmc==pmc) and (qm.var==pm.var) then
857 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
858 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
860 local npn, nqn = Np.nuc, Nq.nuc
861 local gb, db, bn, bp, bh
862 = new_jfm_glue(qmc, Nq.class,
863 slow_find_char_class(Np.char,
865 local ga, da, an, ap, ah
867 slow_find_char_class(Nq.char,
870 local g = calc_ja_ja_aux(gb, ga, db, da)
872 if (pmc==qmc) and (qm.var==pm.var) then
873 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
874 ga = get_kanjiskip_low(false, pm, an, ap, ah)
875 k = calc_ja_ja_aux(gb, ga, db, da)
882 -------------------- 和欧文間空白量の決定
885 local get_xkanjiskip, xkanjiskip_jfm_flag
886 local get_xkanjiskip_normal, get_xkanjiskip_jfm
888 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
889 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
891 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
892 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
893 if xkanjiskip_jfm_flag then
894 local g = node_new(id_glue);
895 local bk = qm.xkanjiskip or null_skip_table
896 setglue(g, bn and bk[1] or 0,
898 bh and bk[3] or 0, 0, 0)
899 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
902 return node_copy(xkanji_skip)
904 local g = node_new(id_glue);
906 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
907 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
908 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
910 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
916 get_xkanjiskip = function(Nn)
917 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
918 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
920 local g = node_new(id_glue)
921 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
927 -------------------- 隣接した「塊」間の処理
929 local function get_OA_skip(is_kanji)
931 local g, _, kn, kp, kh = new_jfm_glue(
933 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
937 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, pm, kn, kp, kh)
938 elseif is_kanji==1 then
939 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
940 and get_xkanjiskip_low(false, pm, kn, kp, kh)
944 local function get_OB_skip(is_kanji)
946 local g, _, kn, kp, kh = new_jfm_glue(
947 qm.char_type, Nq.class,
948 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
951 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
952 elseif is_kanji==1 then
953 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
954 and get_xkanjiskip_low(false, qm, kn, kp, kh)
959 -- (anything) .. jachar
960 local function handle_np_jachar(mode)
962 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
964 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
965 if not g then g = get_kanjiskip() end
966 handle_penalty_normal(Nq.post, Np.pre, g);
967 real_insert(g); real_insert(k)
968 elseif Nq.met then -- qid==id_hlist
970 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
971 if not g then g = get_kanjiskip() end
972 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
975 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
976 if not g then g = get_xkanjiskip(Np) end
977 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
978 real_insert(g); real_insert(k)
980 local g = non_ihb_flag and (get_OA_skip()) -- O_A
981 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
982 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
983 else handle_penalty_always(0, Np.pre, g)
987 if mode and Np.kcat%2~=1 then
988 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
993 -- jachar .. (anything)
994 local function handle_nq_jachar()
996 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
997 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
999 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1000 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1001 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1002 else handle_penalty_always(Nq.post, 0, g)
1008 -- (anything) .. (和文文字で始まる hlist)
1009 local function handle_np_ja_hlist()
1011 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
1012 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1013 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1014 elseif Nq.met then -- Nq.id==id_hlist
1015 local g = get_kanjiskip() -- K
1016 handle_penalty_suppress(0, 0, g); real_insert(g)
1018 local g = get_xkanjiskip(Np) -- X
1019 handle_penalty_suppress(0, 0, g); real_insert(g)
1023 -- (和文文字で終わる hlist) .. (anything)
1024 local function handle_nq_ja_hlist()
1026 local g = get_xkanjiskip(Nq) -- X
1027 handle_penalty_suppress(0, 0, g); real_insert(g)
1032 -- Nq が前側のクラスタとなることによる修正
1034 local adjust_nq_aux = {
1035 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1036 [id_hlist] = function() after_hlist(Nq) end,
1037 [id_pbox] = function() after_hlist(Nq) end,
1038 [id_disc] = function() after_hlist(Nq) end,
1039 [id_pbox_w] = function()
1040 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1045 function adjust_nq()
1046 local x = adjust_nq_aux[Nq.id]
1052 -------------------- 開始・終了時の処理
1054 local node_prev = node.direct.getprev
1056 local function handle_list_tail(mode, last)
1059 -- the current list is to be line-breaked.
1060 -- Insert \jcharwidowpenalty
1061 if widow_Np.first then handle_penalty_jwp() end
1064 -- the current list is the contents of a hbox
1065 local npi, pm = Np.id, Np.met
1066 if npi == id_jglyph or (npi==id_pbox and pm) then
1067 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1069 set_attr(g, attr_icflag, BOXBDD)
1070 head = insert_after(head, Np.last, g)
1077 local function handle_list_head(par_indented)
1078 local npi, pm = Np.id, Np.met
1079 if npi == id_jglyph or (npi==id_pbox and pm) then
1080 if non_ihb_flag then
1081 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1083 set_attr(g, attr_icflag, BOXBDD)
1084 if getid(g)==id_glue and #Bp==0 then
1085 local h = node_new(id_penalty)
1086 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1088 head = insert_before(head, Np.first, g)
1095 -- return value: (the initial cursor lp), (last node)
1098 local id_local = node.id('local_par')
1099 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1100 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1101 local KSK = luatexja.stack_table_index.KSK
1102 local XSK = luatexja.stack_table_index.XSK
1103 local dir_yoko = luatexja.dir_table.dir_yoko
1104 local dir_tate = luatexja.dir_table.dir_tate
1105 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1106 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1107 local table_pool = {
1108 {}, {}, {first=nil},
1109 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1110 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1111 post=nil, pre=nil, xspc=nil, },
1112 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1113 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1114 post=nil, pre=nil, xspc=nil, },
1116 init_var = function (mode,dir)
1117 -- 1073741823: max_dimen
1118 Bp, widow_Bp, widow_Np, Np, Nq
1119 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1120 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1121 table_current_stack = ltjs.table_current_stack
1123 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1124 local is_dir_tate = list_dir==dir_tate
1125 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1126 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1127 local TEMP = node_new(id_glue)
1128 -- TEMP is a dummy node, which will be freed at the end of the callback.
1129 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1132 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1133 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1137 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1138 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1142 -- the current list is to be line-breaked:
1143 -- hbox from \parindent is skipped.
1144 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1146 ((lpi==id_whatsit and lps~=sid_user)
1147 or ((lpi==id_hlist) and (lps==3))
1148 or (lpi==id_local)) do
1149 if (lpi==id_hlist) and (lps==3) then
1150 Np.char, par_indented = 'parbdd', 'parbdd'
1151 Np.width = getfield(lp, 'width')
1153 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1154 return lp, node_tail(head), par_indented, TEMP
1156 return head, nil, 'boxbdd', TEMP
1161 local ensure_tex_attr = ltjb.ensure_tex_attr
1162 local function cleanup(mode, TEMP)
1163 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1164 -- adjust attr_icflag for avoiding error
1165 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1166 node_free(kanji_skip);
1167 node_free(xkanji_skip); node_free(TEMP)
1170 local h = node_next(head)
1171 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1173 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1180 -------------------- 外部から呼ばれる関数
1183 function main(ahead, mode, dir)
1184 if not ahead then return ahead end
1186 local lp, last, par_indented, TEMP = init_var(mode,dir)
1187 lp = calc_np(last, lp)
1189 handle_list_head(par_indented)
1190 lp = calc_np(last,lp);
1193 local pid, pm = Np.id, Np.met
1195 if pid == id_jglyph then
1196 handle_np_jachar(mode)
1198 if pid==id_hlist then handle_np_ja_hlist()
1199 else handle_np_jachar() end
1201 if Nq.id==id_hlist then handle_nq_ja_hlist()
1202 else handle_nq_jachar() end
1204 lp = calc_np(last,lp)
1206 handle_list_tail(mode, last)
1208 return cleanup(mode, TEMP)
1213 local IHB = luatexja.userid_table.IHB
1214 local BPAR = luatexja.userid_table.BPAR
1215 local node_prev = node.direct.getprev
1216 local node_write = node.direct.write
1219 function create_inhibitglue_node()
1220 local tn = node_new(id_whatsit, sid_user)
1221 setfield(tn, 'user_id', IHB)
1222 setfield(tn, 'type', 100)
1223 setfield(tn, 'value', 1)
1227 -- Node for indicating beginning of a paragraph
1228 -- (for ltjsclasses)
1229 function create_beginpar_node()
1230 local tn = node_new(id_whatsit, sid_user)
1231 setfield(tn, 'user_id', BPAR)
1232 setfield(tn, 'type', 100)
1233 setfield(tn, 'value', 1)
1237 local function whatsit_callback(Np, lp, Nq)
1238 if Np and Np.nuc then return Np
1239 elseif Np and getfield(lp, 'user_id') == BPAR then
1240 Np.first = lp; Np.nuc = lp; Np.last = lp
1245 local function whatsit_after_callback(s, Nq, Np)
1246 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1247 local x, y = node_prev(Nq.nuc), Nq.nuc
1248 Nq.first, Nq.nuc, Nq.last = x, x, x
1251 Nq.class = fast_find_char_class('parbdd', Np.met)
1253 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1254 Nq.auto_xspc = false
1256 head = node_remove(head, y)
1262 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1263 "luatexja.beginpar.np_info", 1)
1264 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1265 "luatexja.beginpar.np_info_after", 1)