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 Dnode = node.direct or node
21 local nullfunc = function(n) return n end
22 local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
23 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
25 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
26 local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
27 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
28 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
29 local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
30 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
31 local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
33 local has_attr = Dnode.has_attribute
34 local set_attr = Dnode.set_attribute
35 local insert_before = Dnode.insert_before
36 local insert_after = Dnode.insert_after
37 local node_next = (Dnode ~= node) and Dnode.getnext or node.next
38 local round = tex.round
39 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
40 local ltjf_font_metric_table = ltjf.font_metric_table
41 local ltjf_find_char_class = ltjf.find_char_class
42 local node_new = Dnode.new
43 local node_copy = Dnode.copy
44 local node_remove = Dnode.remove
45 local node_tail = Dnode.tail
46 local node_free = Dnode.free
47 local node_end_of_math = Dnode.end_of_math
49 local id_glyph = node.id('glyph')
50 local id_hlist = node.id('hlist')
51 local id_vlist = node.id('vlist')
52 local id_rule = node.id('rule')
53 local id_ins = node.id('ins')
54 local id_mark = node.id('mark')
55 local id_adjust = node.id('adjust')
56 local id_disc = node.id('disc')
57 local id_whatsit = node.id('whatsit')
58 local id_math = node.id('math')
59 local id_glue = node.id('glue')
60 local id_kern = node.id('kern')
61 local id_penalty = node.id('penalty')
63 local id_glue_spec = node.id('glue_spec')
64 local id_jglyph = 512 -- Japanese character
65 local id_box_like = 256 -- vbox, shifted hbox
66 local id_pbox = 257 -- already processed nodes (by \unhbox)
67 local id_pbox_w = 258 -- cluster which consists of a whatsit
68 local sid_user = node.subtype('user_defined')
70 local sid_start_link = node.subtype('pdf_start_link')
71 local sid_start_thread = node.subtype('pdf_start_thread')
72 local sid_end_link = node.subtype('pdf_end_link')
73 local sid_end_thread = node.subtype('pdf_end_thread')
75 local ITALIC = luatexja.icflag_table.ITALIC
76 local PACKED = luatexja.icflag_table.PACKED
77 local KINSOKU = luatexja.icflag_table.KINSOKU
78 local FROM_JFM = luatexja.icflag_table.FROM_JFM
79 local PROCESSED = luatexja.icflag_table.PROCESSED
80 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
81 local BOXBDD = luatexja.icflag_table.BOXBDD
82 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
85 local table_current_stack
90 local set_np_xspc_jachar
92 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
93 local attr_dir = luatexbase.attributes['ltj@dir']
94 local attr_icflag = luatexbase.attributes['ltj@icflag']
96 local function get_attr_icflag(p)
97 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
100 -------------------- Helper functions
102 local function copy_attr(new, old)
103 -- 仕様が決まるまで off にしておく
106 -- This function is called only for acquiring `special' characters.
107 local function fast_find_char_class(c,m)
108 return m.chars[c] or 0
112 local slow_find_char_class
114 local start_time_measure = ltjb.start_time_measure
115 local stop_time_measure = ltjb.stop_time_measure
116 slow_find_char_class = function (c, m, oc)
117 local cls = ltjf_find_char_class(oc, m)
118 if oc~=c and cls==0 then
119 return ltjf_find_char_class(-c, m), oc
126 local zero_glue = node_new(id_glue)
127 spec_zero_glue = to_node(node_new(id_glue_spec))
128 -- must be public, since mentioned from other sources
129 local spec_zero_glue = to_direct(spec_zero_glue)
130 setfield(spec_zero_glue, 'width', 0)
131 setfield(spec_zero_glue, 'stretch', 0)
132 setfield(spec_zero_glue, 'shrink', 0)
133 setfield(spec_zero_glue, 'stretch_order', 0)
134 setfield(spec_zero_glue, 'shrink_order', 0)
135 setfield(zero_glue, 'spec', spec_zero_glue)
137 local function skip_table_to_spec(n)
138 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
139 setfield(g, 'width', st.width)
140 setfield(g, 'stretch', st.stretch)
141 setfield(g, 'shrink', st.shrink)
142 setfield(g, 'stretch_order', st.stretch_order)
143 setfield(g, 'shrink_order', st.shrink_order)
149 local function add_penalty(p,e)
150 local pp = getfield(p, 'penalty')
152 if e<=-10000 then setfield(p, 'penalty', 0) end
153 elseif pp<=-10000 then
154 if e>=10000 then setfield(p, 'penalty', 0) end
157 if pp>=10000 then setfield(p, 'penalty', 10000)
158 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
159 else setfield(p, 'penalty', pp) end
164 diffmet_rule = math.two_paverage
165 function math.two_add(a,b) return a+b end
166 function math.two_average(a,b) return (a+b)*0.5 end
167 function math.two_paverage(a,b) return (a+b)/2 end
168 function math.two_pleft(a,b) return a end
169 function math.two_pright(a,b) return b end
171 local head -- the head of current list
174 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
176 local ihb_flag -- JFM グルー挿入抑止用 flag
177 -- on: \inhibitglue 指定時,hlist の周囲
179 -------------------- hlist 内の文字の検索
181 local first_char, last_char, find_first_char
183 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
184 local function check_box(box_ptr, box_end)
185 local p = box_ptr; local found_visible_node = false
187 find_first_char = false; last_char = nil
190 while p and p~=box_end do
192 if pid==id_kern and getsubtype(p)==2 then
193 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
195 if pid==id_glyph then
197 if find_first_char then
198 first_char = p; find_first_char = false
200 last_char = p; found_visible_node = true; p=node_next(p)
201 if (not p) or p==box_end then
202 return found_visible_node
204 until getid(p)~=id_glyph
205 pid = getid(p) -- p must be non-nil
208 local pa = get_attr_icflag(p)
209 if pa==IC_PROCESSED then
211 elseif getsubtype(p)==2 then
212 p = node_next(node_next(p));
213 -- Note that another node_next will be executed outside this if-statement.
215 found_visible_node = true
216 find_first_char = false; last_char = nil
218 elseif pid==id_hlist then
219 if PACKED == get_attr_icflag(p) then
220 local s = ltjd_glyph_from_packed(p)
221 if find_first_char then
222 first_char = s; find_first_char = false
224 last_char = s; found_visible_node = true
226 if getfield(p, 'shift')==0 then
227 if check_box(getlist(p), nil) then found_visible_node = true end
229 find_first_char = false; last_char = nil
232 elseif pid==id_math then
233 if find_first_char then
234 first_char = p; find_first_char = false
236 last_char = p; found_visible_node = true
237 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
239 elseif not (pid==id_ins or pid==id_mark
240 or pid==id_adjust or pid==id_whatsit
241 or pid==id_penalty) then
242 found_visible_node = true
243 find_first_char = false; last_char = nil
247 return found_visible_node
250 function check_box_high(Nx, box_ptr, box_end)
251 first_char = nil; last_char = nil; find_first_char = true
252 if check_box(box_ptr, box_end) then
253 local first_char = first_char
255 if getid(first_char)==id_glyph then
256 if getfont(first_char) == (has_attr(first_char, attr_curjfnt) or -1) then
257 set_np_xspc_jachar(Nx, first_char)
259 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
262 set_np_xspc_alchar(Nx, -1,first_char)
269 -------------------- Np の計算と情報取得
271 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
272 function (Np, lp, Nq)
273 if Np.nuc then return Np
275 return Np -- your code
278 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
279 function (stat, Nq, Np) return false end)
284 local traverse = Dnode.traverse
285 local function set_attr_icflag_processed(p)
286 if get_attr_icflag(p)<= ITALIC then
287 set_attr(p, attr_icflag, PROCESSED)
291 local function check_next_ickern(lp)
292 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
293 set_attr(lp, attr_icflag, IC_PROCESSED)
294 Np.last = lp; return node_next(lp)
296 Np.last = Np.nuc; return lp
300 local function calc_np_pbox(lp, last)
301 local first, lpa, nc = (not Np.first), KINSOKU, nil
302 Np.first = Np.first or lp; Np.id = id_pbox
303 set_attr(lp, attr_icflag, get_attr_icflag(lp));
304 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
305 if getid(lp)==id_hlist or getid(lp)==id_vlist then
306 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
307 if first then Np.first = nc end
309 nc, lp = lp, node_next(lp)
311 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
312 -- get_attr_icflag() ではいけない!
315 return check_next_ickern(lp)
318 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
319 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
320 local min, max = math.min, math.max
321 local function calc_np_aux_glyph_common(lp)
324 if (getfont(lp) == (has_attr(lp, attr_curjfnt) or -1)) then
326 set_np_xspc_jachar(Np, lp)
328 lp, head, npi, npf = capsule_glyph(lp, Np.met, Np.class, head, tex_dir)
329 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
331 return true, check_next_ickern(lp);
334 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
336 local first_glyph, last_glyph = lp
337 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
338 local y_adjust = has_attr(lp,attr_ablshift) or 0
339 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
340 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
341 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
343 for lx in traverse(lp) do
344 local lai = get_attr_icflag(lx)
345 if lx==last or lai>=PACKED then
348 local lid = getid(lx)
349 if lid==id_glyph and not(getfont(lx) == (has_attr(lx, attr_curjfnt) or -1)) then
351 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
352 y_adjust = has_attr(lx,attr_ablshift) or 0
353 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
354 adj_depth = (y_adjust>0) and max(getfield(lp, 'depth') + y_adjust, adj_depth) or adj_depth
355 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
356 elseif lid==id_kern then
357 local ls = getsubtype(lx)
358 if ls==2 then -- アクセント用の kern
359 set_attr(lx, attr_icflag, PROCESSED)
360 lx = node_next(lx) -- lp: アクセント本体
361 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
362 lx = node_next(node_next(lx))
365 elseif (ls==1 and lai==ITALIC) then
366 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
376 if adj_depth>node_depth then
377 r = node_new(id_rule)
378 setfield(r, 'width', 0); setfield(r, 'height', 0)
379 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
380 set_attr(r, attr_icflag, PROCESSED)
383 Np.last_char = last_glyph
384 if r then insert_after(head, first_glyph, r) end
389 local nf, nc = getfont(npn), getchar(npn)
390 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
391 if (ct.left_protruding or 0) == 0 then
392 head = insert_before(head, npn, r)
393 Np.first = (Np.first==npn) and r or npn
394 elseif (ct.right_protruding or 0) == 0 then
395 insert_after(head, npn, r); Np.last, lp = r, r
397 ltjb.package_warning_no_line(
399 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
400 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
401 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
409 local calc_np_auxtable = {
410 [id_glyph] = function (lp)
411 Np.first= (Np.first or lp)
412 return calc_np_aux_glyph_common(lp)
414 [id_hlist] = function(lp)
416 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
417 set_attr(op, attr_icflag, PROCESSED)
418 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
419 if (flag or getfield(op, 'shift')~=0) then
423 Np.last_char = check_box_high(Np, getlist(op), nil)
427 [id_vlist] = function(lp)
429 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
430 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
434 box_like = function(lp)
435 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
437 return true, node_next(lp)
440 set_attr(lp, attr_icflag, PROCESSED)
441 return false, node_next(lp)
443 [id_whatsit] = function(lp)
444 local lps = getsubtype(lp)
445 if lps==sid_user then
446 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
447 local lq = node_next(lp);
448 head = node_remove(head, lp); node_free(lp); ihb_flag = true
451 set_attr(lp, attr_icflag, PROCESSED)
452 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
455 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
456 return true, node_next(lp)
458 return false, node_next(lp)
462 -- we do special treatment for these whatsit nodes.
463 if lps == sid_start_link or lps == sid_start_thread then
465 elseif lps == sid_end_link or lps == sid_end_thread then
466 Np.first, Nq.last = nil, lp;
468 set_attr(lp, attr_icflag, PROCESSED)
469 return false, node_next(lp)
472 [id_math] = function(lp)
473 Np.first, Np.nuc = (Np.first or lp), lp;
474 set_attr(lp, attr_icflag, PROCESSED)
475 set_np_xspc_alchar(Np, -1, lp)
476 local end_math = node_end_of_math(lp)
477 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
478 set_attr(end_math, attr_icflag, PROCESSED)
479 Np.last, Np.id = end_math, id_math;
480 return true, node_next(end_math);
482 [id_glue] = function(lp)
483 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
484 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
485 return true, node_next(lp)
487 [id_disc] = function(lp)
488 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
489 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
490 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
491 return true, node_next(lp)
493 [id_kern] = function(lp)
494 Np.first = Np.first or lp
495 if getsubtype(lp)==2 then
496 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
497 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
498 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
499 set_attr(lp, attr_icflag, PROCESSED);
500 return calc_np_aux_glyph_common(lp)
502 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
503 Np.last = lp; return true, node_next(lp)
506 [id_penalty] = function(lp)
507 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
508 return false, node_next(lp)
511 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
512 calc_np_auxtable[13] = calc_np_auxtable.box_like
513 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
514 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
515 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
517 function calc_np(lp, last)
519 -- We assume lp = node_next(Np.last)
520 Np, Nq, ihb_flag = Nq, Np, nil
521 -- We clear `predefined' entries of Np before pairs() loop,
522 -- because using only pairs() loop is slower.
523 Np.post, Np.pre, Np.xspc = nil, nil, nil
524 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
525 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
526 for k in pairs(Np) do Np[k] = nil end
528 for k = 1,#Bp do Bp[k] = nil end
530 local lpa = has_attr(lp, attr_icflag) or 0
533 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
534 local lq = node_next(lp)
535 head = node_remove(head, lp); node_free(lp); lp = lq
537 return calc_np_pbox(lp, last)
540 k, lp = calc_np_auxtable[getid(lp)](lp)
541 if k then return lp end
548 local calc_np = calc_np
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_orig_char = luatexbase.attributes['ltj@origchar']
566 local attr_autospc = luatexbase.attributes['ltj@autospc']
567 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
568 function set_np_xspc_jachar_yoko(Nx, x)
569 local m = ltjf_font_metric_table[getfont(x)]
570 local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, getchar(x))
571 Nx.met, Nx.char = m, c; Nx.class = cls;
572 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
573 Nx.pre = table_current_stack[PRE + c] or 0
574 Nx.post = table_current_stack[POST + c] or 0
575 Nx.xspc = table_current_stack[XSP + c] or 3
576 Nx.kcat = table_current_stack[KCAT + c] or 0
577 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
579 function set_np_xspc_jachar_tate(Nx, x)
580 local m = ltjf_font_metric_table[getfont(x)]
582 local c1, c2 = getchar(x), has_attr(x, attr_orig_char)
583 c = has_attr(x, attr_dir) or c1 or c2
584 cls = ltjf_find_char_class(c, m)
585 if cls==0 then cls = slow_find_char_class(c2, m, c1) end
586 Nx.met, Nx.char = m, c; Nx.class = cls;
587 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
588 Nx.pre = table_current_stack[PRE + c] or 0
589 Nx.post = table_current_stack[POST + c] or 0
590 Nx.xspc = table_current_stack[XSP + c] or 3
591 Nx.kcat = table_current_stack[KCAT + c] or 0
592 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
596 local floor = math.floor
597 function set_np_xspc_alchar(Nx, c,x, lig)
599 local f = (lig ==1) and nullfunc or node_tail
600 local xc, xs = getfield(x, 'components'), getsubtype(x)
601 while xc and xs and xs%4>=2 do
602 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
605 Nx.pre = table_current_stack[PRE + c] or 0
606 Nx.post = table_current_stack[POST + c] or 0
607 Nx.xspc = table_current_stack[XSP + c] or 3
610 Nx.pre, Nx.post, Nx.char = 0, 0, -1
611 Nx.xspc = table_current_stack[XSP - 1] or 3
614 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
616 local set_np_xspc_alchar = set_np_xspc_alchar
619 extract_np = function ()
620 local x, i = Np.nuc, Np.id;
621 -- if i == id_jglyph then return set_np_xspc_jachar(Np, x)
622 -- elseif i == id_glyph then return set_np_xspc_alchar(Np, getchar(x), x, 1)
623 -- if i == id_hlist then Np.last_char = check_box_high(Np, getlist(x), nil)
624 if i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
625 elseif i == id_disc then Np.last_char = check_box_high(Np, getfield(x, 'replace'), nil)
626 -- elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
630 -- change the information for the next loop
631 -- (will be done if Nx is an alphabetic character or a hlist)
632 after_hlist = function (Nx)
633 local s = Nx.last_char
635 if getid(s)==id_glyph then
636 if getfont(s) == (has_attr(s, attr_curjfnt) or -1) then
637 set_np_xspc_jachar(Nx, s)
639 set_np_xspc_alchar(Nx, getchar(s), s, 2)
642 set_np_xspc_alchar(Nx, -1, s)
645 Nx.pre, Nx.met = nil, nil
649 after_alchar = function (Nx)
650 local x = Nx.last_char
651 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
656 -------------------- 最下層の処理
658 -- change penalties (or create a new penalty, if needed)
659 local function handle_penalty_normal(post, pre, g)
660 local a = (pre or 0) + (post or 0)
662 if (a~=0 and not(g and getid(g)==id_kern)) then
663 local p = node_new(id_penalty)
664 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
665 setfield(p, 'penalty', a)
666 head = insert_before(head, Np.first, p)
668 set_attr(p, attr_icflag, KINSOKU)
670 else for _, v in pairs(Bp) do add_penalty(v,a) end
674 local function handle_penalty_always(post, pre, g)
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 local a = (pre or 0) + (post or 0)
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)
698 else for _, v in pairs(Bp) do add_penalty(v,a) end
702 -- 和文文字間の JFM glue を node 化
703 local function new_jfm_glue(m, bc, ac)
704 -- bc, ac: char classes
705 local g, d = m.char_type[bc][ac], 0
708 n,d = node_copy(g[2]), g[3]
710 local f = node_new(id_glue)
711 set_attr(f, attr_icflag, g[4])
712 setfield(f, 'spec', n)
719 -- Nq.last (kern w) .... (glue/kern g) Np.first
720 local function real_insert(g)
722 head = insert_before(head, Np.first, g)
728 -------------------- 和文文字間空白量の決定
732 local get_kanjiskip_normal, get_kanjiskip_jfm
734 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
735 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
736 get_kanjiskip_normal = function ()
737 if Np.auto_kspc or Nq.auto_kspc then
738 return node_copy(kanji_skip)
740 local g = node_copy(zero_glue)
741 set_attr(g, attr_icflag, KANJI_SKIP)
746 get_kanjiskip_jfm = function ()
748 if Np.auto_kspc or Nq.auto_kspc then
749 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
750 local gx = node_new(id_glue_spec);
751 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
752 local pm, qm = Np.met, Nq.met
753 local bk = qm.kanjiskip or {0, 0, 0}
754 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
755 setfield(gx, 'width', bk[1])
756 setfield(gx, 'stretch', bk[2])
757 setfield(gx, 'shrink', bk[3])
759 local ak = pm.kanjiskip or {0, 0, 0}
760 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
761 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
762 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
764 setfield(g, 'spec', gx)
766 g = node_copy(zero_glue)
768 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
775 local bg_ag = 2*id_glue - id_glue
776 local bg_ak = 2*id_glue - id_kern
777 local bk_ag = 2*id_kern - id_glue
778 local bk_ak = 2*id_kern - id_kern
780 calc_ja_ja_aux = function (gb,ga, db, da)
781 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
782 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
783 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
784 and diffmet_rule ~= math.two_paverage then
785 rbb, rab, rba, raa = 1,0,0,1
789 gb = node_new(id_kern); setfield(gb, 'kern', 0)
792 ga = node_new(id_kern); setfield(ga, 'kern', 0)
795 local k = 2*getid(gb) - getid(ga)
797 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
799 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
800 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
801 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
802 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
803 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
804 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
807 elseif k == bk_ak then
809 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
810 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
813 elseif k == bk_ag then
814 local as = getfield(ga, 'spec')
815 -- gb: kern, ga: glue
816 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
817 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
818 ad = getfield(as, 'stretch')
819 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
820 ad = getfield(as, 'shrink')
821 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
825 local bs = getfield(gb, 'spec')
826 -- gb: glue, ga: kern
827 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
828 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
829 bd = getfield(bs, 'stretch')
830 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
831 bd = getfield(bs, 'shrink')
832 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
839 local function calc_ja_ja_glue()
840 if ihb_flag then return nil
842 local qm, pm = Nq.met, Np.met
843 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
844 return new_jfm_glue(qm, Nq.class, Np.class)
846 local npn, nqn = Np.nuc, Nq.nuc
847 local gb, db = new_jfm_glue(qm, Nq.class,
848 slow_find_char_class(has_attr(npn, attr_orig_char),
850 local ga, da = new_jfm_glue(pm,
851 slow_find_char_class(has_attr(nqn, attr_orig_char),
854 return calc_ja_ja_aux(gb, ga, db, da);
859 -------------------- 和欧文間空白量の決定
863 local get_xkanjiskip_normal, get_xkanjiskip_jfm
865 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
866 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
867 get_xkanjiskip_normal = function (Nn)
868 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
869 return node_copy(xkanji_skip)
871 local g = node_copy(zero_glue)
872 set_attr(g, attr_icflag, XKANJI_SKIP)
876 get_xkanjiskip_jfm = function (Nn)
878 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
879 g = node_new(id_glue)
880 local gx = node_new(id_glue_spec);
881 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
882 local bk = Nn.met.xkanjiskip or {0, 0, 0}
883 setfield(gx, 'width', bk[1])
884 setfield(gx, 'stretch', bk[2])
885 setfield(gx, 'shrink', bk[3])
886 setfield(g, 'spec', gx)
888 g = node_copy(zero_glue)
890 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
895 -------------------- 隣接した「塊」間の処理
897 local function get_OA_skip()
900 return new_jfm_glue(pm,
901 fast_find_char_class(((Nq.id == id_math and -1) or (type(Nq.char)=='string' and Nq.char or 'jcharbdd')), pm), Np.class)
905 local function get_OB_skip()
908 return new_jfm_glue(qm, Nq.class,
909 fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
914 -- (anything) .. jachar
915 local function handle_np_jachar(mode)
917 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
918 local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
919 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
920 elseif Nq.met then -- qid==id_hlist
921 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
922 handle_penalty_normal(0, Np.pre, g); real_insert(g)
924 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
925 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
927 local g = get_OA_skip() -- O_A
928 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
929 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
930 else handle_penalty_always(0, Np.pre, g)
934 if mode and Np.kcat%2~=1 then
935 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
940 -- jachar .. (anything)
941 local function handle_nq_jachar()
943 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
944 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
946 local g = get_OB_skip() -- O_B
947 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
948 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
949 else handle_penalty_always(Nq.post, 0, g)
955 -- (anything) .. (和文文字で始まる hlist)
956 local function handle_np_ja_hlist()
958 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
959 local g = get_OB_skip() or get_kanjiskip() -- O_B->K
960 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
961 elseif Nq.met then -- Nq.id==id_hlist
962 local g = get_kanjiskip() -- K
963 handle_penalty_suppress(0, 0, g); real_insert(g)
965 local g = get_xkanjiskip(Np) -- X
966 handle_penalty_suppress(0, 0, g); real_insert(g)
970 -- (和文文字で終わる hlist) .. (anything)
971 local function handle_nq_ja_hlist()
973 local g = get_xkanjiskip(Nq) -- X
974 handle_penalty_suppress(0, 0, g); real_insert(g)
979 -- Nq が前側のクラスタとなることによる修正
981 local adjust_nq_aux = {
982 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
983 [id_hlist] = function() after_hlist(Nq) end,
984 [id_pbox] = function() after_hlist(Nq) end,
985 [id_disc] = function() after_hlist(Nq) end,
986 [id_pbox_w] = function()
987 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
993 local x = adjust_nq_aux[Nq.id]
999 -------------------- 開始・終了時の処理
1003 local JWP = luatexja.stack_table_index.JWP
1004 local function handle_list_tail(mode)
1005 adjust_nq(); Np = Nq
1007 -- the current list is to be line-breaked.
1008 -- Insert \jcharwidowpenalty
1009 Bp = widow_Bp; Np = widow_Np
1011 handle_penalty_normal(0,
1012 table_current_stack[JWP] or 0)
1015 -- the current list is the contents of a hbox
1016 local npi, pm = Np.id, Np.met
1017 if npi == id_jglyph or (npi==id_pbox and pm) then
1018 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
1020 set_attr(g, attr_icflag, BOXBDD)
1021 head = insert_after(head, Np.last, g)
1028 local function handle_list_head(par_indented)
1029 local npi, pm = Np.id, Np.met
1030 if npi == id_jglyph or (npi==id_pbox and pm) then
1031 if not ihb_flag then
1032 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1034 set_attr(g, attr_icflag, BOXBDD)
1035 if getid(g)==id_glue and #Bp==0 then
1036 local h = node_new(id_penalty)
1037 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1039 head = insert_before(head, Np.first, g)
1046 -- return value: (the initial cursor lp), (last node)
1049 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1050 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1051 local KSK = luatexja.stack_table_index.KSK
1052 local XSK = luatexja.stack_table_index.XSK
1053 local dir_yoko = luatexja.dir_table.dir_yoko
1054 local dir_tate = luatexja.dir_table.dir_tate
1055 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1056 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1057 init_var = function (mode,dir)
1058 -- 1073741823: max_dimen
1059 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
1060 table_current_stack = ltjs.table_current_stack
1062 list_dir = ltjs.list_dir or dir_yoko
1063 local is_dir_tate = list_dir==dir_tate
1064 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1065 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1066 set_np_xspc_jachar = is_dir_tate and set_np_xspc_jachar_tate or set_np_xspc_jachar_yoko
1069 tex_dir = dir or 'TLT'
1070 kanji_skip = node_new(id_glue)
1071 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1072 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1073 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1074 and get_kanjiskip_jfm or get_kanjiskip_normal
1076 xkanji_skip = node_new(id_glue)
1077 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1078 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1079 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1080 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1083 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1084 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1085 post=nil, pre=nil, xspc=nil,
1088 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1089 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1090 post=nil, pre=nil, xspc=nil,
1093 -- the current list is to be line-breaked:
1094 -- hbox from \parindent is skipped.
1095 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1096 while lp and ((lpi==id_whatsit and lps~=sid_user)
1097 or ((lpi==id_hlist) and (lps==3))) do
1098 if (lpi==id_hlist) and (lps==3) then
1099 Np.char, par_indented = 'parbdd', 'parbdd'
1100 Np.width = getfield(lp, 'width')
1102 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1103 return lp, node_tail(head), par_indented
1105 return head, nil, 'boxbdd'
1110 local tex_set_attr = tex.setattribute
1111 local function cleanup(mode)
1112 -- adjust attr_icflag for avoiding error
1113 tex_set_attr('global', attr_icflag, 0)
1114 node_free(kanji_skip); node_free(xkanji_skip)
1116 local h = node_next(head)
1117 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1119 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1126 -------------------- 外部から呼ばれる関数
1129 function main(ahead, mode, dir)
1130 if not ahead then return ahead end
1132 local lp, last, par_indented = init_var(mode,dir)
1133 lp = calc_np(lp, last)
1135 extract_np(); handle_list_head(par_indented)
1137 return cleanup(mode)
1139 lp = calc_np(lp, last)
1143 local pid, pm = Np.id, Np.met
1145 if pid == id_jglyph then
1146 handle_np_jachar(mode)
1148 if pid==id_hlist then handle_np_ja_hlist()
1149 else handle_np_jachar() end
1151 if Nq.id==id_hlist then handle_nq_ja_hlist()
1152 else handle_nq_jachar() end
1154 lp = calc_np(lp, last)
1156 handle_list_tail(mode)
1157 return cleanup(mode)
1162 local IHB = luatexja.userid_table.IHB
1163 local BPAR = luatexja.userid_table.BPAR
1164 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1165 local node_write = Dnode.write
1168 function create_inhibitglue_node()
1169 local tn = node_new(id_whatsit, sid_user)
1170 setfield(tn, 'user_id', IHB)
1171 setfield(tn, 'type', 100)
1172 setfield(tn, 'value', 1)
1176 -- Node for indicating beginning of a paragraph
1177 -- (for ltjsclasses)
1178 function create_beginpar_node()
1179 local tn = node_new(id_whatsit, sid_user)
1180 setfield(tn, 'user_id', BPAR)
1181 setfield(tn, 'type', 100)
1182 setfield(tn, 'value', 1)
1186 local function whatsit_callback(Np, lp, Nq)
1187 if Np and Np.nuc then return Np
1188 elseif Np and getfield(lp, 'user_id') == BPAR then
1189 Np.first = lp; Np.nuc = lp; Np.last = lp
1192 Np.pre = 0; Np.post = 0
1194 Np.auto_xspc = false
1199 local function whatsit_after_callback(s, Nq, Np)
1200 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1201 local x, y = node_prev(Nq.nuc), Nq.nuc
1202 Nq.first, Nq.nuc, Nq.last = x, x, x
1203 head = node_remove(head, y)
1209 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1210 "luatexja.beginpar.np_info", 1)
1211 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1212 "luatexja.beginpar.np_info_after", 1)