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 min, max = math.min, math.max
320 local function calc_np_aux_glyph_common(lp)
323 if (getfont(lp) == (has_attr(lp, attr_curjfnt) or -1)) then
325 set_np_xspc_jachar(Np, lp)
327 lp, head, npi, npf = capsule_glyph(lp, Np.met, Np.class, head, tex_dir)
328 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
330 return true, check_next_ickern(lp);
333 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
335 local first_glyph, last_glyph = lp
336 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
337 local y_adjust = has_attr(lp,attr_ablshift) or 0
338 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
339 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
340 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
342 for lp in traverse(lp) do
343 if lp==last or get_attr_icflag(lp)>=PACKED then
346 local lid = getid(lp)
347 if lid==id_glyph and not (getfont(lp) == (has_attr(lp, attr_curjfnt) or -1)) then
349 last_glyph = lp; set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
350 y_adjust = has_attr(lp,attr_ablshift) or 0
351 node_depth = max(getfield(lp, 'depth') + min(y_adjust, 0), node_depth)
352 adj_depth = (y_adjust>0) and adj_depth or max(getfield(lp, 'depth') + y_adjust, adj_depth)
353 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
354 elseif lid==id_kern and getsubtype(lp)==2 then -- アクセント用の kern
355 set_attr(lp, attr_icflag, PROCESSED)
356 lp = node_next(lp) -- lp: アクセント本体
357 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
358 lp = node_next(node_next(lp))
363 -- イタリック補正はあんまり使わない,と考えてループ継続条件に入れない.
366 Np.last_char = last_glyph
367 if adj_depth>node_depth then
368 local r = node_new(id_rule)
369 setfield(r, 'width', 0); setfield(r, 'height', 0)
370 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
371 set_attr(r, attr_icflag, PROCESSED)
372 insert_after(head, first_glyph, r)
377 if adj_depth>node_depth then
378 local nf, nc = getfont(npn), getchar(npn)
379 local left_protru = (font.getfont(nf) or font.fonts[nf] ).characters[nc].left_protruding or 0
380 -- lpcode が 0 なら,直前に補正用 rule を挿入する.
381 -- なお,rpcode 判定ではうまくいかない(LuaTeX のバグ?)
382 if left_protru ==0 then
383 local r = node_new(id_rule)
384 setfield(r, 'width', 0); setfield(r, 'height', 0)
385 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
386 set_attr(r, attr_icflag, PROCESSED)
387 head = insert_before(head, first_glyph, r)
388 Np.first = (Np.first==npn) and r or npn
390 ltjb.package_warning_no_line(
392 'Check depth of ' .. tostring(npn) .. '(font=' .. nf
393 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(left_protru))
397 return true, check_next_ickern(lp)
400 local calc_np_auxtable = {
401 [id_glyph] = function (lp)
402 Np.first= (Np.first or lp)
403 return calc_np_aux_glyph_common(lp)
405 [id_hlist] = function(lp)
407 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
408 set_attr(op, attr_icflag, PROCESSED)
409 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
410 if (flag or getfield(op, 'shift')~=0) then
414 Np.last_char = check_box_high(Np, getlist(op), nil)
418 [id_vlist] = function(lp)
420 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
421 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
425 box_like = function(lp)
426 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
428 return true, node_next(lp)
431 set_attr(lp, attr_icflag, PROCESSED)
432 return false, node_next(lp)
434 [id_whatsit] = function(lp)
435 local lps = getsubtype(lp)
436 if lps==sid_user then
437 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
438 local lq = node_next(lp);
439 head = node_remove(head, lp); node_free(lp); ihb_flag = true
442 set_attr(lp, attr_icflag, PROCESSED)
443 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
446 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
447 return true, node_next(lp)
449 return false, node_next(lp)
453 -- we do special treatment for these whatsit nodes.
454 if lps == sid_start_link or lps == sid_start_thread then
456 elseif lps == sid_end_link or lps == sid_end_thread then
457 Np.first, Nq.last = nil, lp;
459 set_attr(lp, attr_icflag, PROCESSED)
460 return false, node_next(lp)
463 [id_math] = function(lp)
464 Np.first, Np.nuc = (Np.first or lp), lp;
465 set_attr(lp, attr_icflag, PROCESSED)
466 set_np_xspc_alchar(Np, -1, lp)
467 local end_math = node_end_of_math(lp)
468 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
469 set_attr(end_math, attr_icflag, PROCESSED)
470 Np.last, Np.id = end_math, id_math;
471 return true, node_next(end_math);
473 discglue = function(lp)
474 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
475 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
476 return true, node_next(lp)
478 [id_kern] = function(lp)
479 Np.first = Np.first or lp
480 if getsubtype(lp)==2 then
481 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
482 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
483 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
484 set_attr(lp, attr_icflag, PROCESSED);
485 return calc_np_aux_glyph_common(lp)
487 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
488 Np.last = lp; return true, node_next(lp)
491 [id_penalty] = function(lp)
492 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
493 return false, node_next(lp)
496 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
497 calc_np_auxtable[13] = calc_np_auxtable.box_like
498 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
499 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
500 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
501 calc_np_auxtable[id_disc] = calc_np_auxtable.discglue
502 calc_np_auxtable[id_glue] = calc_np_auxtable.discglue
504 function calc_np(lp, last)
506 -- We assume lp = node_next(Np.last)
507 Np, Nq, ihb_flag = Nq, Np, nil
508 -- We clear `predefined' entries of Np before pairs() loop,
509 -- because using only pairs() loop is slower.
510 Np.post, Np.pre, Np.xspc = nil, nil, nil
511 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
512 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
513 for k in pairs(Np) do Np[k] = nil end
515 for k = 1,#Bp do Bp[k] = nil end
517 local lpa = has_attr(lp, attr_icflag) or 0
520 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
521 local lq = node_next(lp)
522 head = node_remove(head, lp); node_free(lp); lp = lq
524 return calc_np_pbox(lp, last)
527 k, lp = calc_np_auxtable[getid(lp)](lp)
528 if k then return lp end
535 local calc_np = calc_np
537 -- extract informations from Np
538 -- We think that "Np is a Japanese character" if Np.met~=nil,
539 -- "Np is an alphabetic character" if Np.pre~=nil,
540 -- "Np is not a character" otherwise.
541 after_hlist = nil -- global
542 local after_alchar, extract_np
544 local PRE = luatexja.stack_table_index.PRE
545 local POST = luatexja.stack_table_index.POST
546 local KCAT = luatexja.stack_table_index.KCAT
547 local XSP = luatexja.stack_table_index.XSP
548 local dir_tate = luatexja.dir_table.dir_tate
551 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
552 local attr_orig_char = luatexbase.attributes['ltj@origchar']
553 local attr_autospc = luatexbase.attributes['ltj@autospc']
554 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
555 function set_np_xspc_jachar_yoko(Nx, x)
556 local m = ltjf_font_metric_table[getfont(x)]
557 local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, getchar(x))
558 Nx.met, Nx.char = m, c; Nx.class = cls;
559 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
560 Nx.pre = table_current_stack[PRE + c] or 0
561 Nx.post = table_current_stack[POST + c] or 0
562 Nx.xspc = table_current_stack[XSP + c] or 3
563 Nx.kcat = table_current_stack[KCAT + c] or 0
564 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
566 function set_np_xspc_jachar_tate(Nx, x)
567 local m = ltjf_font_metric_table[getfont(x)]
569 local c1, c2 = getchar(x), has_attr(x, attr_orig_char)
570 c = has_attr(x, attr_dir) or c1 or c2
571 cls = ltjf_find_char_class(c, m)
572 if cls==0 then cls = slow_find_char_class(c2, m, c1) end
573 Nx.met, Nx.char = m, c; Nx.class = cls;
574 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
575 Nx.pre = table_current_stack[PRE + c] or 0
576 Nx.post = table_current_stack[POST + c] or 0
577 Nx.xspc = table_current_stack[XSP + c] or 3
578 Nx.kcat = table_current_stack[KCAT + c] or 0
579 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
583 local floor = math.floor
584 function set_np_xspc_alchar(Nx, c,x, lig)
586 local f = (lig ==1) and nullfunc or node_tail
587 local xc, xs = getfield(x, 'components'), getsubtype(x)
588 while xc and xs and xs%4>=2 do
589 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
592 Nx.pre = table_current_stack[PRE + c] or 0
593 Nx.post = table_current_stack[POST + c] or 0
594 Nx.xspc = table_current_stack[XSP + c] or 3
597 Nx.pre, Nx.post, Nx.char = 0, 0, -1
598 Nx.xspc = table_current_stack[XSP - 1] or 3
601 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
603 local set_np_xspc_alchar = set_np_xspc_alchar
606 extract_np = function ()
607 local x, i = Np.nuc, Np.id;
608 -- if i == id_jglyph then return set_np_xspc_jachar(Np, x)
609 -- elseif i == id_glyph then return set_np_xspc_alchar(Np, getchar(x), x, 1)
610 -- if i == id_hlist then Np.last_char = check_box_high(Np, getlist(x), nil)
611 if i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last))
612 elseif i == id_disc then Np.last_char = check_box_high(Np, getfield(x, 'replace'), nil)
613 -- elseif i == id_math then return set_np_xspc_alchar(Np, -1, x)
617 -- change the information for the next loop
618 -- (will be done if Nx is an alphabetic character or a hlist)
619 after_hlist = function (Nx)
620 local s = Nx.last_char
622 if getid(s)==id_glyph then
623 if getfont(s) == (has_attr(s, attr_curjfnt) or -1) then
624 set_np_xspc_jachar(Nx, s)
626 set_np_xspc_alchar(Nx, getchar(s), s, 2)
629 set_np_xspc_alchar(Nx, -1, s)
632 Nx.pre, Nx.met = nil, nil
636 after_alchar = function (Nx)
637 local x = Nx.last_char
638 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
643 -------------------- 最下層の処理
645 -- change penalties (or create a new penalty, if needed)
646 local function handle_penalty_normal(post, pre, g)
647 local a = (pre or 0) + (post or 0)
649 if (a~=0 and not(g and getid(g)==id_kern)) then
650 local p = node_new(id_penalty)
651 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
652 setfield(p, 'penalty', a)
653 head = insert_before(head, Np.first, p)
655 set_attr(p, attr_icflag, KINSOKU)
657 else for _, v in pairs(Bp) do add_penalty(v,a) end
661 local function handle_penalty_always(post, pre, g)
662 local a = (pre or 0) + (post or 0)
664 if not (g and getid(g)==id_glue) or a~=0 then
665 local p = node_new(id_penalty)
666 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
667 setfield(p, 'penalty', a)
668 head = insert_before(head, Np.first, p)
670 set_attr(p, attr_icflag, KINSOKU)
672 else for _, v in pairs(Bp) do add_penalty(v,a) end
676 local function handle_penalty_suppress(post, pre, g)
677 local a = (pre or 0) + (post or 0)
679 if g and getid(g)==id_glue then
680 local p = node_new(id_penalty)
681 setfield(p, 'penalty', 10000); 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 -- 和文文字間の JFM glue を node 化
690 local function new_jfm_glue(m, bc, ac)
691 -- bc, ac: char classes
692 local g, d = m.char_type[bc][ac], 0
695 n,d = node_copy(g[2]), g[3]
697 local f = node_new(id_glue)
698 set_attr(f, attr_icflag, g[4])
699 setfield(f, 'spec', n)
706 -- Nq.last (kern w) .... (glue/kern g) Np.first
707 local function real_insert(g)
709 head = insert_before(head, Np.first, g)
715 -------------------- 和文文字間空白量の決定
719 local get_kanjiskip_normal, get_kanjiskip_jfm
721 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
722 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
723 get_kanjiskip_normal = function ()
724 if Np.auto_kspc or Nq.auto_kspc then
725 return node_copy(kanji_skip)
727 local g = node_copy(zero_glue)
728 set_attr(g, attr_icflag, KANJI_SKIP)
733 get_kanjiskip_jfm = function ()
735 if Np.auto_kspc or Nq.auto_kspc then
736 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
737 local gx = node_new(id_glue_spec);
738 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
739 local pm, qm = Np.met, Nq.met
740 local bk = qm.kanjiskip or {0, 0, 0}
741 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
742 setfield(gx, 'width', bk[1])
743 setfield(gx, 'stretch', bk[2])
744 setfield(gx, 'shrink', bk[3])
746 local ak = pm.kanjiskip or {0, 0, 0}
747 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
748 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
749 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
751 setfield(g, 'spec', gx)
753 g = node_copy(zero_glue)
755 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
762 local bg_ag = 2*id_glue - id_glue
763 local bg_ak = 2*id_glue - id_kern
764 local bk_ag = 2*id_kern - id_glue
765 local bk_ak = 2*id_kern - id_kern
767 calc_ja_ja_aux = function (gb,ga, db, da)
768 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
769 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
770 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
771 and diffmet_rule ~= math.two_paverage then
772 rbb, rab, rba, raa = 1,0,0,1
776 gb = node_new(id_kern); setfield(gb, 'kern', 0)
779 ga = node_new(id_kern); setfield(ga, 'kern', 0)
782 local k = 2*getid(gb) - getid(ga)
784 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
786 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
787 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
788 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
789 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
790 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
791 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
794 elseif k == bk_ak then
796 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
797 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
800 elseif k == bk_ag then
801 local as = getfield(ga, 'spec')
802 -- gb: kern, ga: glue
803 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
804 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
805 ad = getfield(as, 'stretch')
806 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
807 ad = getfield(as, 'shrink')
808 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
812 local bs = getfield(gb, 'spec')
813 -- gb: glue, ga: kern
814 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
815 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
816 bd = getfield(bs, 'stretch')
817 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
818 bd = getfield(bs, 'shrink')
819 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
826 local function calc_ja_ja_glue()
827 if ihb_flag then return nil
829 local qm, pm = Nq.met, Np.met
830 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
831 return new_jfm_glue(qm, Nq.class, Np.class)
833 local npn, nqn = Np.nuc, Nq.nuc
834 local gb, db = new_jfm_glue(qm, Nq.class,
835 slow_find_char_class(has_attr(npn, attr_orig_char),
837 local ga, da = new_jfm_glue(pm,
838 slow_find_char_class(has_attr(nqn, attr_orig_char),
841 return calc_ja_ja_aux(gb, ga, db, da);
846 -------------------- 和欧文間空白量の決定
850 local get_xkanjiskip_normal, get_xkanjiskip_jfm
852 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
853 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
854 get_xkanjiskip_normal = function (Nn)
855 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
856 return node_copy(xkanji_skip)
858 local g = node_copy(zero_glue)
859 set_attr(g, attr_icflag, XKANJI_SKIP)
863 get_xkanjiskip_jfm = function (Nn)
865 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
866 g = node_new(id_glue)
867 local gx = node_new(id_glue_spec);
868 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
869 local bk = Nn.met.xkanjiskip or {0, 0, 0}
870 setfield(gx, 'width', bk[1])
871 setfield(gx, 'stretch', bk[2])
872 setfield(gx, 'shrink', bk[3])
873 setfield(g, 'spec', gx)
875 g = node_copy(zero_glue)
877 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
882 -------------------- 隣接した「塊」間の処理
884 local function get_OA_skip()
887 return new_jfm_glue(pm,
888 fast_find_char_class(((Nq.id == id_math and -1) or (type(Nq.char)=='string' and Nq.char or 'jcharbdd')), pm), Np.class)
892 local function get_OB_skip()
895 return new_jfm_glue(qm, Nq.class,
896 fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm))
901 -- (anything) .. jachar
902 local function handle_np_jachar(mode)
904 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
905 local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K
906 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
907 elseif Nq.met then -- qid==id_hlist
908 local g = get_OA_skip() or get_kanjiskip() -- O_A->K
909 handle_penalty_normal(0, Np.pre, g); real_insert(g)
911 local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
912 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
914 local g = get_OA_skip() -- O_A
915 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
916 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
917 else handle_penalty_always(0, Np.pre, g)
921 if mode and Np.kcat%2~=1 then
922 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
927 -- jachar .. (anything)
928 local function handle_nq_jachar()
930 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
931 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
933 local g = get_OB_skip() -- O_B
934 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
935 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
936 else handle_penalty_always(Nq.post, 0, g)
942 -- (anything) .. (和文文字で始まる hlist)
943 local function handle_np_ja_hlist()
945 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
946 local g = get_OB_skip() or get_kanjiskip() -- O_B->K
947 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
948 elseif Nq.met then -- Nq.id==id_hlist
949 local g = get_kanjiskip() -- K
950 handle_penalty_suppress(0, 0, g); real_insert(g)
952 local g = get_xkanjiskip(Np) -- X
953 handle_penalty_suppress(0, 0, g); real_insert(g)
957 -- (和文文字で終わる hlist) .. (anything)
958 local function handle_nq_ja_hlist()
960 local g = get_xkanjiskip(Nq) -- X
961 handle_penalty_suppress(0, 0, g); real_insert(g)
966 -- Nq が前側のクラスタとなることによる修正
968 local adjust_nq_aux = {
969 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
970 [id_hlist] = function() after_hlist(Nq) end,
971 [id_pbox] = function() after_hlist(Nq) end,
972 [id_disc] = function() after_hlist(Nq) end,
973 [id_pbox_w] = function()
974 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
980 local x = adjust_nq_aux[Nq.id]
986 -------------------- 開始・終了時の処理
990 local JWP = luatexja.stack_table_index.JWP
991 local function handle_list_tail(mode)
994 -- the current list is to be line-breaked.
995 -- Insert \jcharwidowpenalty
996 Bp = widow_Bp; Np = widow_Np
998 handle_penalty_normal(0,
999 table_current_stack[JWP] or 0)
1002 -- the current list is the contents of a hbox
1003 local npi, pm = Np.id, Np.met
1004 if npi == id_jglyph or (npi==id_pbox and pm) then
1005 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
1007 set_attr(g, attr_icflag, BOXBDD)
1008 head = insert_after(head, Np.last, g)
1015 local function handle_list_head(par_indented)
1016 local npi, pm = Np.id, Np.met
1017 if npi == id_jglyph or (npi==id_pbox and pm) then
1018 if not ihb_flag then
1019 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1021 set_attr(g, attr_icflag, BOXBDD)
1022 if getid(g)==id_glue and #Bp==0 then
1023 local h = node_new(id_penalty)
1024 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1026 head = insert_before(head, Np.first, g)
1033 -- return value: (the initial cursor lp), (last node)
1036 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1037 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1038 local KSK = luatexja.stack_table_index.KSK
1039 local XSK = luatexja.stack_table_index.XSK
1040 local dir_yoko = luatexja.dir_table.dir_yoko
1041 local dir_tate = luatexja.dir_table.dir_tate
1042 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1043 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1044 init_var = function (mode,dir)
1045 -- 1073741823: max_dimen
1046 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
1047 table_current_stack = ltjs.table_current_stack
1049 list_dir = ltjs.list_dir or dir_yoko
1050 local is_dir_tate = list_dir==dir_tate
1051 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1052 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1053 set_np_xspc_jachar = is_dir_tate and set_np_xspc_jachar_tate or set_np_xspc_jachar_yoko
1056 tex_dir = dir or 'TLT'
1057 kanji_skip = node_new(id_glue)
1058 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1059 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1060 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1061 and get_kanjiskip_jfm or get_kanjiskip_normal
1063 xkanji_skip = node_new(id_glue)
1064 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1065 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1066 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1067 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1070 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1071 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1072 post=nil, pre=nil, xspc=nil,
1075 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1076 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1077 post=nil, pre=nil, xspc=nil,
1080 -- the current list is to be line-breaked:
1081 -- hbox from \parindent is skipped.
1082 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1083 while lp and ((lpi==id_whatsit and lps~=sid_user)
1084 or ((lpi==id_hlist) and (lps==3))) do
1085 if (lpi==id_hlist) and (lps==3) then
1086 Np.char, par_indented = 'parbdd', 'parbdd'
1087 Np.width = getfield(lp, 'width')
1089 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1090 return lp, node_tail(head), par_indented
1092 return head, nil, 'boxbdd'
1097 local tex_set_attr = tex.setattribute
1098 local function cleanup(mode)
1099 -- adjust attr_icflag for avoiding error
1100 tex_set_attr('global', attr_icflag, 0)
1101 node_free(kanji_skip); node_free(xkanji_skip)
1103 local h = node_next(head)
1104 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1106 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1113 -------------------- 外部から呼ばれる関数
1116 function main(ahead, mode, dir)
1117 if not ahead then return ahead end
1119 local lp, last, par_indented = init_var(mode,dir)
1120 lp = calc_np(lp, last)
1122 extract_np(); handle_list_head(par_indented)
1124 return cleanup(mode)
1126 lp = calc_np(lp, last)
1130 local pid, pm = Np.id, Np.met
1132 if pid == id_jglyph then
1133 handle_np_jachar(mode)
1135 if pid==id_hlist then handle_np_ja_hlist()
1136 else handle_np_jachar() end
1138 if Nq.id==id_hlist then handle_nq_ja_hlist()
1139 else handle_nq_jachar() end
1141 lp = calc_np(lp, last)
1143 handle_list_tail(mode)
1144 return cleanup(mode)
1149 local IHB = luatexja.userid_table.IHB
1150 local BPAR = luatexja.userid_table.BPAR
1151 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1152 local node_write = Dnode.write
1155 function create_inhibitglue_node()
1156 local tn = node_new(id_whatsit, sid_user)
1157 setfield(tn, 'user_id', IHB)
1158 setfield(tn, 'type', 100)
1159 setfield(tn, 'value', 1)
1163 -- Node for indicating beginning of a paragraph
1164 -- (for ltjsclasses)
1165 function create_beginpar_node()
1166 local tn = node_new(id_whatsit, sid_user)
1167 setfield(tn, 'user_id', BPAR)
1168 setfield(tn, 'type', 100)
1169 setfield(tn, 'value', 1)
1173 local function whatsit_callback(Np, lp, Nq)
1174 if Np and Np.nuc then return Np
1175 elseif Np and getfield(lp, 'user_id') == BPAR then
1176 Np.first = lp; Np.nuc = lp; Np.last = lp
1179 Np.pre = 0; Np.post = 0
1181 Np.auto_xspc = false
1186 local function whatsit_after_callback(s, Nq, Np)
1187 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1188 local x, y = node_prev(Nq.nuc), Nq.nuc
1189 Nq.first, Nq.nuc, Nq.last = x, x, x
1190 head = node_remove(head, y)
1196 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1197 "luatexja.beginpar.np_info", 1)
1198 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1199 "luatexja.beginpar.np_info_after", 1)