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')
69 local lang_ja = luatexja.lang_ja
71 local sid_start_link = node.subtype('pdf_start_link')
72 local sid_start_thread = node.subtype('pdf_start_thread')
73 local sid_end_link = node.subtype('pdf_end_link')
74 local sid_end_thread = node.subtype('pdf_end_thread')
76 local ITALIC = luatexja.icflag_table.ITALIC
77 local PACKED = luatexja.icflag_table.PACKED
78 local KINSOKU = luatexja.icflag_table.KINSOKU
79 local FROM_JFM = luatexja.icflag_table.FROM_JFM
80 local PROCESSED = luatexja.icflag_table.PROCESSED
81 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
82 local BOXBDD = luatexja.icflag_table.BOXBDD
83 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
85 local attr_icflag = luatexbase.attributes['ltj@icflag']
88 local table_current_stack
93 local set_np_xspc_jachar
94 local set_np_xspc_jachar_hbox
96 local ltjs_orig_char_table = ltjs.orig_char_table
98 local function get_attr_icflag(p)
99 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
102 -------------------- Helper functions
104 -- This function is called only for acquiring `special' characters.
105 local function fast_find_char_class(c,m)
106 return m.chars[c] or 0
110 local slow_find_char_class
112 local start_time_measure = ltjb.start_time_measure
113 local stop_time_measure = ltjb.stop_time_measure
114 slow_find_char_class = function (c, m, oc)
115 local cls = ltjf_find_char_class(oc, m)
116 if oc~=c and c and cls==0 then
117 return ltjf_find_char_class(c, m)
124 local zero_glue = node_new(id_glue)
125 spec_zero_glue = to_node(node_new(id_glue_spec))
126 -- must be public, since mentioned from other sources
127 local spec_zero_glue = to_direct(spec_zero_glue)
128 setfield(spec_zero_glue, 'width', 0)
129 setfield(spec_zero_glue, 'stretch', 0)
130 setfield(spec_zero_glue, 'shrink', 0)
131 setfield(spec_zero_glue, 'stretch_order', 0)
132 setfield(spec_zero_glue, 'shrink_order', 0)
133 setfield(zero_glue, 'spec', spec_zero_glue)
135 local function skip_table_to_spec(n)
136 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
137 setfield(g, 'width', st.width)
138 setfield(g, 'stretch', st.stretch)
139 setfield(g, 'shrink', st.shrink)
140 setfield(g, 'stretch_order', st.stretch_order)
141 setfield(g, 'shrink_order', st.shrink_order)
147 local function add_penalty(p,e)
148 local pp = getfield(p, 'penalty')
150 if e<=-10000 then setfield(p, 'penalty', 0) end
151 elseif pp<=-10000 then
152 if e>=10000 then setfield(p, 'penalty', 0) end
155 if pp>=10000 then setfield(p, 'penalty', 10000)
156 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
157 else setfield(p, 'penalty', pp) end
162 diffmet_rule = math.two_paverage
163 function math.two_add(a,b) return a+b end
164 function math.two_average(a,b) return (a+b)*0.5 end
165 function math.two_paverage(a,b) return (a+b)/2 end
166 function math.two_pleft(a,b) return a end
167 function math.two_pright(a,b) return b end
169 local head -- the head of current list
172 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
174 local non_ihb_flag -- JFM グルー挿入抑止用 flag
175 -- false: \inhibitglue 指定時 true: それ以外
177 -------------------- hlist 内の文字の検索
179 local first_char, last_char, find_first_char
181 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
182 local function check_box(box_ptr, box_end)
183 local p = box_ptr; local found_visible_node = false
185 find_first_char = false; last_char = nil
188 while p and p~=box_end do
190 if pid==id_kern and getsubtype(p)==2 then
191 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
193 if pid==id_glyph then
195 if find_first_char then
196 first_char = p; find_first_char = false
198 last_char = p; found_visible_node = true; p=node_next(p)
199 if (not p) or p==box_end then
200 return found_visible_node
202 until getid(p)~=id_glyph
203 pid = getid(p) -- p must be non-nil
206 local pa = get_attr_icflag(p)
207 if pa==IC_PROCESSED then
209 elseif getsubtype(p)==2 then
210 p = node_next(node_next(p));
211 -- Note that another node_next will be executed outside this if-statement.
213 found_visible_node = true
214 find_first_char = false; last_char = nil
216 elseif pid==id_hlist then
217 if PACKED == get_attr_icflag(p) then
218 local s = ltjd_glyph_from_packed(p)
219 if find_first_char then
220 first_char = s; find_first_char = false
222 last_char = s; found_visible_node = true
224 if getfield(p, 'shift')==0 then
226 if check_box(getlist(p), nil) then found_visible_node = true end
228 find_first_char = false; last_char = nil
231 elseif pid==id_math then
232 if find_first_char then
233 first_char = p; find_first_char = false
235 last_char = p; found_visible_node = true
236 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
238 elseif not (pid==id_ins or pid==id_mark
239 or pid==id_adjust or pid==id_whatsit
240 or pid==id_penalty) then
241 found_visible_node = true
242 find_first_char = false; last_char = nil
246 return found_visible_node
249 function check_box_high(Nx, box_ptr, box_end)
250 first_char = nil; last_char = nil; find_first_char = true
251 if check_box(box_ptr, box_end) then
252 local first_char = first_char
254 if getid(first_char)==id_glyph then
255 if getfield(first_char, 'lang') == lang_ja then
256 set_np_xspc_jachar_hbox(Nx, first_char)
258 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
261 set_np_xspc_alchar(Nx, -1,first_char)
268 -------------------- Np の計算と情報取得
270 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
271 function (Np, lp, Nq)
272 if Np.nuc then return Np
274 return Np -- your code
277 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
278 function (stat, Nq, Np) return false end)
284 local traverse = Dnode.traverse
285 local function check_next_ickern(lp)
286 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
287 set_attr(lp, attr_icflag, IC_PROCESSED)
288 Np.last = lp; return node_next(lp)
290 Np.last = Np.nuc; return lp
294 local function calc_np_pbox(lp, last)
295 local first, lpa, nc = (not Np.first), KINSOKU, nil
296 Np.first = Np.first or lp; Np.id = id_pbox
297 set_attr(lp, attr_icflag, get_attr_icflag(lp));
298 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
299 if getid(lp)==id_hlist or getid(lp)==id_vlist then
300 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
301 Np.first = first and nc or Np.first
303 nc, lp = lp, node_next(lp)
305 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
306 -- get_attr_icflag() ではいけない!
309 lp = check_next_ickern(lp)
310 Np.last_char = check_box_high(Np, Np.first, lp)
314 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
315 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
316 local min, max = math.min, math.max
317 local function calc_np_aux_glyph_common(lp)
319 Np.first= (Np.first or lp)
320 if getfield(lp, 'lang') == lang_ja then
322 local m, cls = set_np_xspc_jachar(Np, lp)
324 lp, head, npi, npf = capsule_glyph(lp, m, cls, head, tex_dir, lp)
325 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
327 return true, check_next_ickern(lp);
330 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
332 local first_glyph, last_glyph = lp
333 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
334 local y_adjust = has_attr(lp,attr_ablshift) or 0
335 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
336 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
337 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
339 for lx in traverse(lp) do
340 local lai = get_attr_icflag(lx)
341 if lx==last or lai>=PACKED then
344 local lid = getid(lx)
345 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
347 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
348 y_adjust = has_attr(lx,attr_ablshift) or 0
349 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
350 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
351 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
352 elseif lid==id_kern then
353 local ls = getsubtype(lx)
354 if ls==2 then -- アクセント用の kern
355 set_attr(lx, attr_icflag, PROCESSED)
356 lx = node_next(lx) -- lp: アクセント本体
357 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
358 lx = node_next(node_next(lx))
361 elseif (ls==1 and lai==ITALIC) then
362 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
372 if adj_depth>node_depth then
373 r = node_new(id_rule)
374 setfield(r, 'width', 0); setfield(r, 'height', 0)
375 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
376 set_attr(r, attr_icflag, PROCESSED)
379 Np.last_char = last_glyph
380 if r then insert_after(head, first_glyph, r) end
385 local nf, nc = getfont(npn), getchar(npn)
386 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
387 if (ct.left_protruding or 0) == 0 then
388 head = insert_before(head, npn, r)
389 Np.first = (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 = {
406 [id_glyph] = calc_np_aux_glyph_common,
407 [id_hlist] = function(lp)
409 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
410 set_attr(op, attr_icflag, PROCESSED)
411 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
412 if (flag or getfield(op, 'shift')~=0) then
416 Np.last_char = check_box_high(Np, getlist(op), nil)
420 [id_vlist] = function(lp)
422 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
423 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
427 box_like = function(lp)
428 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
430 return true, node_next(lp)
433 set_attr(lp, attr_icflag, PROCESSED)
434 return false, node_next(lp)
436 [id_whatsit] = function(lp)
437 local lps = getsubtype(lp)
438 if lps==sid_user then
439 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
440 local lq = node_next(lp);
441 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
444 set_attr(lp, attr_icflag, PROCESSED)
445 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
448 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
449 return true, node_next(lp)
451 return false, node_next(lp)
455 -- we do special treatment for these whatsit nodes.
456 if lps == sid_start_link or lps == sid_start_thread then
458 elseif lps == sid_end_link or lps == sid_end_thread then
459 Np.first, Nq.last = nil, lp;
461 set_attr(lp, attr_icflag, PROCESSED)
462 return false, node_next(lp)
465 [id_math] = function(lp)
466 Np.first, Np.nuc = (Np.first or lp), lp;
467 set_attr(lp, attr_icflag, PROCESSED)
468 set_np_xspc_alchar(Np, -1, lp)
469 local end_math = node_end_of_math(lp)
470 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
471 set_attr(end_math, attr_icflag, PROCESSED)
472 Np.last, Np.id = end_math, id_math;
473 return true, node_next(end_math);
475 [id_glue] = function(lp)
476 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
477 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
478 return true, node_next(lp)
480 [id_disc] = function(lp)
481 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
482 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
483 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
484 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
485 return true, node_next(lp)
487 [id_kern] = function(lp)
488 if getsubtype(lp)==2 then
489 Np.first = Np.first or lp
490 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
491 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
492 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
493 set_attr(lp, attr_icflag, PROCESSED);
494 return calc_np_aux_glyph_common(lp)
496 Np.first = Np.first or lp
497 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
498 Np.last = lp; return true, node_next(lp)
501 [id_penalty] = function(lp)
502 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
503 return false, node_next(lp)
506 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
507 calc_np_auxtable[13] = calc_np_auxtable.box_like
508 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
509 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
510 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
512 function calc_np(last, lp)
514 -- We assume lp = node_next(Np.last)
515 Np, Nq, non_ihb_flag = Nq, Np, true
516 -- We clear `predefined' entries of Np before pairs() loop,
517 -- because using only pairs() loop is slower.
518 Np.post, Np.pre, Np.xspc = nil, nil, nil
519 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
520 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
521 for k in pairs(Np) do Np[k] = nil end
523 for k = 1,#Bp do Bp[k] = nil end
525 local lpa = has_attr(lp, attr_icflag) or 0
528 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
529 local lq = node_next(lp)
530 head = node_remove(head, lp); node_free(lp); lp = lq
532 return calc_np_pbox(lp, last)
535 k, lp = calc_np_auxtable[getid(lp)](lp)
536 if k then return lp end
543 -- extract informations from Np
544 -- We think that "Np is a Japanese character" if Np.met~=nil,
545 -- "Np is an alphabetic character" if Np.pre~=nil,
546 -- "Np is not a character" otherwise.
547 after_hlist = nil -- global
548 local after_alchar, extract_np
550 local PRE = luatexja.stack_table_index.PRE
551 local POST = luatexja.stack_table_index.POST
552 local KCAT = luatexja.stack_table_index.KCAT
553 local XSP = luatexja.stack_table_index.XSP
554 local dir_tate = luatexja.dir_table.dir_tate
557 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
558 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
559 local attr_autospc = luatexbase.attributes['ltj@autospc']
560 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
561 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
562 function set_np_xspc_jachar(Nx, x)
563 local m = ltjf_font_metric_table[getfont(x)]
564 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
566 local cls = slow_find_char_class(c, m, c_glyph)
567 Nx.met, Nx.class, Nx.char = m, cls, c;
568 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
569 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
570 Nx.pre = table_current_stack[PRE + c] or 0
571 Nx.post = table_current_stack[POST + c] or 0
572 Nx.xspc = table_current_stack[XSP + c] or 3
573 Nx.kcat = table_current_stack[KCAT + c] or 0
574 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
577 function set_np_xspc_jachar_hbox(Nx, x)
578 local m = ltjf_font_metric_table[getfont(x)]
579 local c = has_attr(x, attr_jchar_code) or getchar(x)
580 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
581 Nx.pre = table_current_stack[PRE + c] or 0
582 Nx.post = table_current_stack[POST + c] or 0
583 Nx.xspc = table_current_stack[XSP + c] or 3
584 Nx.kcat = table_current_stack[KCAT + c] or 0
585 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
589 local floor = math.floor
590 function set_np_xspc_alchar(Nx, c,x, lig)
592 local f = (lig ==1) and nullfunc or node_tail
593 local xc, xs = getfield(x, 'components'), getsubtype(x)
594 while xc and xs and xs%4>=2 do
595 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
598 Nx.pre = table_current_stack[PRE + c] or 0
599 Nx.post = table_current_stack[POST + c] or 0
600 Nx.xspc = table_current_stack[XSP + c] or 3
602 Nx.pre, Nx.post = 0, 0
603 Nx.xspc = table_current_stack[XSP - 1] or 3
606 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
608 local set_np_xspc_alchar = set_np_xspc_alchar
610 -- change the information for the next loop
611 -- (will be done if Nx is an alphabetic character or a hlist)
612 after_hlist = function (Nx)
613 local s = Nx.last_char
615 if getid(s)==id_glyph then
616 if getfield(s, 'lang') == lang_ja then
617 set_np_xspc_jachar_hbox(Nx, s)
619 set_np_xspc_alchar(Nx, getchar(s), s, 2)
622 set_np_xspc_alchar(Nx, -1, s)
625 Nx.pre, Nx.met = nil, nil
629 after_alchar = function (Nx)
630 local x = Nx.last_char
631 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
636 -------------------- 最下層の処理
638 -- change penalties (or create a new penalty, if needed)
639 local function handle_penalty_normal(post, pre, g)
640 local a = (pre or 0) + (post or 0)
642 if (a~=0 and not(g and getid(g)==id_kern)) then
643 local p = node_new(id_penalty)
644 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
645 setfield(p, 'penalty', a)
646 head = insert_before(head, Np.first, p)
648 set_attr(p, attr_icflag, KINSOKU)
650 else for _, v in pairs(Bp) do add_penalty(v,a) end
654 local function handle_penalty_always(post, pre, g)
655 local a = (pre or 0) + (post or 0)
657 if not (g and getid(g)==id_glue) or a~=0 then
658 local p = node_new(id_penalty)
659 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
660 setfield(p, 'penalty', a)
661 head = insert_before(head, Np.first, p)
663 set_attr(p, attr_icflag, KINSOKU)
665 else for _, v in pairs(Bp) do add_penalty(v,a) end
669 local function handle_penalty_suppress(post, pre, g)
670 local a = (pre or 0) + (post or 0)
672 if g and getid(g)==id_glue then
673 local p = node_new(id_penalty)
674 setfield(p, 'penalty', 10000); 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 -- 和文文字間の JFM glue を node 化
683 local function new_jfm_glue(m, bc, ac)
684 -- bc, ac: char classes
685 local g = m.char_type[bc][ac]
688 local f = node_new(id_glue)
689 set_attr(f, attr_icflag, g[4])
690 setfield(f, 'spec', node_copy(g[2]))
693 return node_copy(g[2]), g[3]
699 -- Nq.last (kern w) .... (glue/kern g) Np.first
700 local function real_insert(g)
702 head = insert_before(head, Np.first, g)
708 -------------------- 和文文字間空白量の決定
709 local null_skip_table = {0, 0, 0}
712 local get_kanjiskip_normal, get_kanjiskip_jfm
714 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
715 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
716 get_kanjiskip_normal = function ()
717 if Np.auto_kspc or Nq.auto_kspc then
718 return node_copy(kanji_skip)
720 local g = node_copy(zero_glue)
721 set_attr(g, attr_icflag, KANJI_SKIP)
726 get_kanjiskip_jfm = function ()
728 if Np.auto_kspc or Nq.auto_kspc then
729 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
730 local gx = node_new(id_glue_spec);
731 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
732 local pm, qm = Np.met, Nq.met
733 local bk = qm.kanjiskip or null_skip_table
734 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
735 setfield(gx, 'width', bk[1])
736 setfield(gx, 'stretch', bk[2])
737 setfield(gx, 'shrink', bk[3])
739 local ak = pm.kanjiskip or null_skip_table
740 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
741 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
742 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
744 setfield(g, 'spec', gx)
746 g = node_copy(zero_glue)
748 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
755 local bg_ag = 2*id_glue - id_glue
756 local bg_ak = 2*id_glue - id_kern
757 local bk_ag = 2*id_kern - id_glue
758 local bk_ak = 2*id_kern - id_kern
760 calc_ja_ja_aux = function (gb,ga, db, da)
761 local rbb, rab = 0.5*(1-db), 0.5*(1-da) -- 「前の文字」由来のグルーの割合
762 local rba, raa = 0.5*(1+db), 0.5*(1+da) -- 「前の文字」由来のグルーの割合
763 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
764 and diffmet_rule ~= math.two_paverage then
765 rbb, rab, rba, raa = 1,0,0,1
769 gb = node_new(id_kern); setfield(gb, 'kern', 0)
772 ga = node_new(id_kern); setfield(ga, 'kern', 0)
775 local k = 2*getid(gb) - getid(ga)
777 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
779 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
780 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
781 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
782 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
783 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
784 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
787 elseif k == bk_ak then
789 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
790 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
793 elseif k == bk_ag then
794 local as = getfield(ga, 'spec')
795 -- gb: kern, ga: glue
796 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
797 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
798 ad = getfield(as, 'stretch')
799 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
800 ad = getfield(as, 'shrink')
801 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
805 local bs = getfield(gb, 'spec')
806 -- gb: glue, ga: kern
807 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
808 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
809 bd = getfield(bs, 'stretch')
810 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
811 bd = getfield(bs, 'shrink')
812 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
819 local function calc_ja_ja_glue()
820 local qm, pm = Nq.met, Np.met
821 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
822 return new_jfm_glue(qm, Nq.class, Np.class)
824 local npn, nqn = Np.nuc, Nq.nuc
825 local gb, db = new_jfm_glue(qm, Nq.class,
826 slow_find_char_class(Np.char,
828 local ga, da = new_jfm_glue(pm,
829 slow_find_char_class(Nq.char,
832 return calc_ja_ja_aux(gb, ga, db, da);
836 -------------------- 和欧文間空白量の決定
840 local get_xkanjiskip_normal, get_xkanjiskip_jfm
842 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
843 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
844 get_xkanjiskip_normal = function (Nn)
845 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
846 return node_copy(xkanji_skip)
848 local g = node_copy(zero_glue)
849 set_attr(g, attr_icflag, XKANJI_SKIP)
853 get_xkanjiskip_jfm = function (Nn)
855 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
856 g = node_new(id_glue)
857 local gx = node_new(id_glue_spec);
858 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
859 local bk = Nn.met.xkanjiskip or null_skip_table
860 setfield(gx, 'width', bk[1])
861 setfield(gx, 'stretch', bk[2])
862 setfield(gx, 'shrink', bk[3])
863 setfield(g, 'spec', gx)
865 g = node_copy(zero_glue)
867 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
872 -------------------- 隣接した「塊」間の処理
874 local function get_OA_skip()
876 return new_jfm_glue(pm,
877 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
879 local function get_OB_skip()
881 return new_jfm_glue(qm, Nq.class,
882 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
885 -- (anything) .. jachar
886 local function handle_np_jachar(mode)
888 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
889 local g = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
890 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
891 elseif Nq.met then -- qid==id_hlist
892 local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
893 handle_penalty_normal(0, Np.pre, g); real_insert(g)
895 local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
896 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
898 local g = non_ihb_flag and get_OA_skip() -- O_A
899 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
900 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
901 else handle_penalty_always(0, Np.pre, g)
905 if mode and Np.kcat%2~=1 then
906 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
911 -- jachar .. (anything)
912 local function handle_nq_jachar()
914 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
915 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
917 local g =non_ihb_flag and get_OB_skip() -- O_B
918 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
919 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
920 else handle_penalty_always(Nq.post, 0, g)
926 -- (anything) .. (和文文字で始まる hlist)
927 local function handle_np_ja_hlist()
929 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
930 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
931 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
932 elseif Nq.met then -- Nq.id==id_hlist
933 local g = get_kanjiskip() -- K
934 handle_penalty_suppress(0, 0, g); real_insert(g)
936 local g = get_xkanjiskip(Np) -- X
937 handle_penalty_suppress(0, 0, g); real_insert(g)
941 -- (和文文字で終わる hlist) .. (anything)
942 local function handle_nq_ja_hlist()
944 local g = get_xkanjiskip(Nq) -- X
945 handle_penalty_suppress(0, 0, g); real_insert(g)
950 -- Nq が前側のクラスタとなることによる修正
952 local adjust_nq_aux = {
953 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
954 [id_hlist] = function() after_hlist(Nq) end,
955 [id_pbox] = function() after_hlist(Nq) end,
956 [id_disc] = function() after_hlist(Nq) end,
957 [id_pbox_w] = function()
958 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
964 local x = adjust_nq_aux[Nq.id]
970 -------------------- 開始・終了時の処理
974 local JWP = luatexja.stack_table_index.JWP
975 local function handle_list_tail(mode)
978 -- the current list is to be line-breaked.
979 -- Insert \jcharwidowpenalty
980 Bp = widow_Bp; Np = widow_Np
982 handle_penalty_normal(0, table_current_stack[JWP] or 0)
985 -- the current list is the contents of a hbox
986 local npi, pm = Np.id, Np.met
987 if npi == id_jglyph or (npi==id_pbox and pm) then
988 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
990 set_attr(g, attr_icflag, BOXBDD)
991 head = insert_after(head, Np.last, g)
998 local function handle_list_head(par_indented)
999 local npi, pm = Np.id, Np.met
1000 if npi == id_jglyph or (npi==id_pbox and pm) then
1001 if non_ihb_flag then
1002 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1004 set_attr(g, attr_icflag, BOXBDD)
1005 if getid(g)==id_glue and #Bp==0 then
1006 local h = node_new(id_penalty)
1007 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1009 head = insert_before(head, Np.first, g)
1016 -- return value: (the initial cursor lp), (last node)
1019 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1020 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1021 local KSK = luatexja.stack_table_index.KSK
1022 local XSK = luatexja.stack_table_index.XSK
1023 local dir_yoko = luatexja.dir_table.dir_yoko
1024 local dir_tate = luatexja.dir_table.dir_tate
1025 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1026 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1027 local table_pool = {
1028 {}, {}, {first=nil},
1029 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1030 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1031 post=nil, pre=nil, xspc=nil, },
1032 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1033 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1034 post=nil, pre=nil, xspc=nil, },
1036 init_var = function (mode,dir)
1037 -- 1073741823: max_dimen
1038 Bp, widow_Bp, widow_Np, Np, Nq
1039 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1040 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1041 table_current_stack = ltjs.table_current_stack
1043 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1044 local is_dir_tate = list_dir==dir_tate
1045 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1046 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1047 local TEMP = node_new(id_glue)
1048 -- TEMP is a dummy node, which will be freed at the end of the callback.
1049 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1052 kanji_skip = node_new(id_glue); set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1053 local s = skip_table_to_spec(KSK)
1054 setfield(kanji_skip, 'spec', s)
1055 get_kanjiskip = (getfield(s, 'width') == 1073741823)
1056 and get_kanjiskip_jfm or get_kanjiskip_normal
1060 xkanji_skip = node_new(id_glue); set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1061 local s = skip_table_to_spec(XSK)
1062 setfield(xkanji_skip, 'spec', s)
1063 get_xkanjiskip = (getfield(s, 'width') == 1073741823)
1064 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1068 -- the current list is to be line-breaked:
1069 -- hbox from \parindent is skipped.
1070 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1071 while lp and ((lpi==id_whatsit and lps~=sid_user)
1072 or ((lpi==id_hlist) and (lps==3))) do
1073 if (lpi==id_hlist) and (lps==3) then
1074 Np.char, par_indented = 'parbdd', 'parbdd'
1075 Np.width = getfield(lp, 'width')
1077 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1078 return lp, node_tail(head), par_indented, TEMP
1080 return head, nil, 'boxbdd', TEMP
1085 local ensure_tex_attr = ltjb.ensure_tex_attr
1086 local function cleanup(mode, TEMP)
1087 -- adjust attr_icflag for avoiding error
1088 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1089 node_free(kanji_skip); node_free(xkanji_skip); node_free(TEMP)
1092 local h = node_next(head)
1093 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1095 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1102 -------------------- 外部から呼ばれる関数
1105 function main(ahead, mode, dir)
1106 if not ahead then return ahead end
1108 local lp, last, par_indented, TEMP = init_var(mode,dir)
1109 lp = calc_np(last, lp)
1111 handle_list_head(par_indented)
1112 lp = calc_np(last,lp); while Np do
1114 local pid, pm = Np.id, Np.met
1116 if pid == id_jglyph then
1117 handle_np_jachar(mode)
1119 if pid==id_hlist then handle_np_ja_hlist()
1120 else handle_np_jachar() end
1122 if Nq.id==id_hlist then handle_nq_ja_hlist()
1123 else handle_nq_jachar() end
1125 lp = calc_np(last,lp)
1127 handle_list_tail(mode)
1129 return cleanup(mode, TEMP)
1134 local IHB = luatexja.userid_table.IHB
1135 local BPAR = luatexja.userid_table.BPAR
1136 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1137 local node_write = Dnode.write
1140 function create_inhibitglue_node()
1141 local tn = node_new(id_whatsit, sid_user)
1142 setfield(tn, 'user_id', IHB)
1143 setfield(tn, 'type', 100)
1144 setfield(tn, 'value', 1)
1148 -- Node for indicating beginning of a paragraph
1149 -- (for ltjsclasses)
1150 function create_beginpar_node()
1151 local tn = node_new(id_whatsit, sid_user)
1152 setfield(tn, 'user_id', BPAR)
1153 setfield(tn, 'type', 100)
1154 setfield(tn, 'value', 1)
1158 local function whatsit_callback(Np, lp, Nq)
1159 if Np and Np.nuc then return Np
1160 elseif Np and getfield(lp, 'user_id') == BPAR then
1161 Np.first = lp; Np.nuc = lp; Np.last = lp
1166 local function whatsit_after_callback(s, Nq, Np)
1167 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1168 local x, y = node_prev(Nq.nuc), Nq.nuc
1169 Nq.first, Nq.nuc, Nq.last = x, x, x
1172 Nq.class = fast_find_char_class('parbdd', Np.met)
1174 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1175 Nq.auto_xspc = false
1177 head = node_remove(head, y)
1183 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1184 "luatexja.beginpar.np_info", 1)
1185 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1186 "luatexja.beginpar.np_info_after", 1)