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) -- lx: アクセント本体
357 setfield(lx, 'yoffset', getfield(lx, '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 not ct then -- variation selector
389 elseif (ct.left_protruding or 0) == 0 then
390 head = insert_before(head, npn, r)
391 Np.first = (Np.first==npn) and r or npn
392 elseif (ct.right_protruding or 0) == 0 then
393 insert_after(head, npn, r); Np.last, lp = r, r
395 ltjb.package_warning_no_line(
397 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
398 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
399 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
407 local calc_np_auxtable = {
408 [id_glyph] = calc_np_aux_glyph_common,
409 [id_hlist] = function(lp)
411 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
412 set_attr(op, attr_icflag, PROCESSED)
413 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
414 if (flag or getfield(op, 'shift')~=0) then
418 Np.last_char = check_box_high(Np, getlist(op), nil)
422 [id_vlist] = function(lp)
424 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
425 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
429 box_like = function(lp)
430 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
432 return true, node_next(lp)
435 set_attr(lp, attr_icflag, PROCESSED)
436 return false, node_next(lp)
438 [id_whatsit] = function(lp)
439 local lps = getsubtype(lp)
440 if lps==sid_user then
441 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
442 local lq = node_next(lp);
443 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
446 set_attr(lp, attr_icflag, PROCESSED)
447 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
450 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
451 return true, node_next(lp)
453 return false, node_next(lp)
457 -- we do special treatment for these whatsit nodes.
458 if lps == sid_start_link or lps == sid_start_thread then
460 elseif lps == sid_end_link or lps == sid_end_thread then
461 Np.first, Nq.last = nil, lp;
463 set_attr(lp, attr_icflag, PROCESSED)
464 return false, node_next(lp)
467 [id_math] = function(lp)
468 Np.first, Np.nuc = (Np.first or lp), lp;
469 set_attr(lp, attr_icflag, PROCESSED)
470 set_np_xspc_alchar(Np, -1, lp)
471 local end_math = node_end_of_math(lp)
472 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
473 set_attr(end_math, attr_icflag, PROCESSED)
474 Np.last, Np.id = end_math, id_math;
475 return true, node_next(end_math);
477 [id_glue] = function(lp)
478 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
479 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
480 return true, node_next(lp)
482 [id_disc] = 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 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
486 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
487 return true, node_next(lp)
489 [id_kern] = function(lp)
490 if getsubtype(lp)==2 then
491 Np.first = Np.first or lp
492 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
493 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
494 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
495 set_attr(lp, attr_icflag, PROCESSED);
496 return calc_np_aux_glyph_common(lp)
498 Np.first = Np.first or lp
499 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
500 Np.last = lp; return true, node_next(lp)
503 [id_penalty] = function(lp)
504 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
505 return false, node_next(lp)
508 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
509 calc_np_auxtable[13] = calc_np_auxtable.box_like
510 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
511 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
512 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
514 function calc_np(last, lp)
516 -- We assume lp = node_next(Np.last)
517 Np, Nq, non_ihb_flag = Nq, Np, true
518 -- We clear `predefined' entries of Np before pairs() loop,
519 -- because using only pairs() loop is slower.
520 Np.post, Np.pre, Np.xspc = nil, nil, nil
521 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
522 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
523 for k in pairs(Np) do Np[k] = nil end
525 for k = 1,#Bp do Bp[k] = nil end
527 local lpa = has_attr(lp, attr_icflag) or 0
530 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
531 local lq = node_next(lp)
532 head = node_remove(head, lp); node_free(lp); lp = lq
534 return calc_np_pbox(lp, last)
537 k, lp = calc_np_auxtable[getid(lp)](lp)
538 if k then return lp end
545 -- extract informations from Np
546 -- We think that "Np is a Japanese character" if Np.met~=nil,
547 -- "Np is an alphabetic character" if Np.pre~=nil,
548 -- "Np is not a character" otherwise.
549 after_hlist = nil -- global
550 local after_alchar, extract_np
552 local PRE = luatexja.stack_table_index.PRE
553 local POST = luatexja.stack_table_index.POST
554 local KCAT = luatexja.stack_table_index.KCAT
555 local XSP = luatexja.stack_table_index.XSP
556 local dir_tate = luatexja.dir_table.dir_tate
559 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
560 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
561 local attr_autospc = luatexbase.attributes['ltj@autospc']
562 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
563 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
564 function set_np_xspc_jachar(Nx, x)
565 local m = ltjf_font_metric_table[getfont(x)]
566 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
568 local cls = slow_find_char_class(c, m, c_glyph)
569 Nx.met, Nx.class, Nx.char = m, cls, c;
570 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
571 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
572 Nx.pre = table_current_stack[PRE + c] or 0
573 Nx.post = table_current_stack[POST + c] or 0
574 Nx.xspc = table_current_stack[XSP + c] or 3
575 Nx.kcat = table_current_stack[KCAT + c] or 0
576 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
579 function set_np_xspc_jachar_hbox(Nx, x)
580 local m = ltjf_font_metric_table[getfont(x)]
581 local c = has_attr(x, attr_jchar_code) or getchar(x)
582 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
583 Nx.pre = table_current_stack[PRE + c] or 0
584 Nx.post = table_current_stack[POST + c] or 0
585 Nx.xspc = table_current_stack[XSP + c] or 3
586 Nx.kcat = table_current_stack[KCAT + c] or 0
587 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
591 local floor = math.floor
592 function set_np_xspc_alchar(Nx, c,x, lig)
594 local f = (lig ==1) and nullfunc or node_tail
595 local xc, xs = getfield(x, 'components'), getsubtype(x)
596 while xc and xs and xs%4>=2 do
597 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
600 Nx.pre = table_current_stack[PRE + c] or 0
601 Nx.post = table_current_stack[POST + c] or 0
602 Nx.xspc = table_current_stack[XSP + c] or 3
604 Nx.pre, Nx.post = 0, 0
605 Nx.xspc = table_current_stack[XSP - 1] or 3
608 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
610 local set_np_xspc_alchar = set_np_xspc_alchar
612 -- change the information for the next loop
613 -- (will be done if Nx is an alphabetic character or a hlist)
614 after_hlist = function (Nx)
615 local s = Nx.last_char
617 if getid(s)==id_glyph then
618 if getfield(s, 'lang') == lang_ja then
619 set_np_xspc_jachar_hbox(Nx, s)
621 set_np_xspc_alchar(Nx, getchar(s), s, 2)
624 set_np_xspc_alchar(Nx, -1, s)
627 Nx.pre, Nx.met = nil, nil
631 after_alchar = function (Nx)
632 local x = Nx.last_char
633 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
638 -------------------- 最下層の処理
640 -- change penalties (or create a new penalty, if needed)
641 local function handle_penalty_normal(post, pre, g)
642 local a = (pre or 0) + (post or 0)
644 if (a~=0 and not(g and getid(g)==id_kern)) then
645 local p = node_new(id_penalty)
646 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
647 setfield(p, 'penalty', a)
648 head = insert_before(head, Np.first, p)
650 set_attr(p, attr_icflag, KINSOKU)
652 else for _, v in pairs(Bp) do add_penalty(v,a) end
656 local function handle_penalty_always(post, pre, g)
657 local a = (pre or 0) + (post or 0)
659 if not (g and getid(g)==id_glue) or a~=0 then
660 local p = node_new(id_penalty)
661 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
662 setfield(p, 'penalty', a)
663 head = insert_before(head, Np.first, p)
665 set_attr(p, attr_icflag, KINSOKU)
667 else for _, v in pairs(Bp) do add_penalty(v,a) end
671 local function handle_penalty_suppress(post, pre, g)
672 local a = (pre or 0) + (post or 0)
674 if g and getid(g)==id_glue then
675 local p = node_new(id_penalty)
676 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
678 set_attr(p, attr_icflag, KINSOKU)
680 else for _, v in pairs(Bp) do add_penalty(v,a) end
684 -- 和文文字間の JFM glue を node 化
685 local function new_jfm_glue(m, bc, ac)
686 -- bc, ac: char classes
687 local g = m.char_type[bc][ac]
690 local f = node_new(id_glue)
691 set_attr(f, attr_icflag, g.priority)
692 setfield(f, 'spec', node_copy(g[2]))
693 return f, g.ratio, g.ksp_natural, g.ksp_stretch, g.ksp_shrink
695 return node_copy(g[2]), g.ratio, false, false, false
701 -- Nq.last (kern w) .... (glue/kern g) Np.first
702 local function real_insert(g)
704 head = insert_before(head, Np.first, g)
710 -------------------- 和文文字間空白量の決定
713 local bg_ag = 2*id_glue - id_glue
714 local bg_ak = 2*id_glue - id_kern
715 local bk_ag = 2*id_kern - id_glue
716 local bk_ak = 2*id_kern - id_kern
718 local function blend_diffmet(b, a, rb, ra)
719 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
721 calc_ja_ja_aux = function (gb, ga, db, da)
722 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
723 and diffmet_rule ~= math.two_paverage then
728 gb = node_new(id_kern); setfield(gb, 'kern', 0)
731 ga = node_new(id_kern); setfield(ga, 'kern', 0)
734 local k = 2*getid(gb) - getid(ga)
736 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
738 setfield(bs, 'width', blend_diffmet(
739 getfield(bs, 'width'), getfield(as, 'width'), db, da))
740 setfield(bs, 'stretch', blend_diffmet(
741 getfield(bs, 'stretch'), getfield(as, 'stretch'), db, da))
742 setfield(bs, 'shrink', -blend_diffmet(
743 -getfield(bs, 'shrink'), -getfield(as, 'shrink'), db, da))
746 elseif k == bk_ak then
748 setfield(gb, 'kern', blend_diffmet(
749 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
752 elseif k == bk_ag then
753 local as = getfield(ga, 'spec')
754 -- gb: kern, ga: glue
755 setfield(as, 'width', blend_diffmet(
756 getfield(gb, 'kern'), getfield(as, 'width'), db, da))
757 setfield(as, 'stretch', blend_diffmet(
758 0, getfield(as, 'stretch'), db, da))
759 setfield(as, 'shrink', -blend_diffmet(
760 0, -getfield(as, 'shrink'), db, da))
764 local bs = getfield(gb, 'spec')
765 -- gb: glue, ga: kern
766 setfield(bs, 'width', blend_diffmet(
767 getfield(bs, 'width'), getfield(ga, 'kern'), db, da))
768 setfield(bs, 'stretch', blend_diffmet(
769 getfield(bs, 'stretch'), 0, db, da))
770 setfield(bs, 'shrink', -blend_diffmet(
771 -getfield(bs, 'shrink'), 0, db, da))
778 local null_skip_table = {0, 0, 0}
780 local get_kanjiskip, kanjiskip_jfm_flag
781 local calc_ja_ja_glue
783 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
784 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
786 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
787 if flag or bn or bp or bh then
788 if kanjiskip_jfm_flag then
789 local g = node_new(id_glue);
790 local gx = node_new(id_glue_spec);
791 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
792 local bk = qm.kanjiskip or null_skip_table
793 setfield(gx, 'width', bn and bk[1] or 0)
794 setfield(gx, 'stretch', bp and bk[2] or 0)
795 setfield(gx, 'shrink', bh and bk[3] or 0)
796 setfield(g, 'spec', gx)
797 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
800 return node_copy(kanji_skip)
802 local g = node_new(id_glue);
803 local gx = node_new(id_glue_spec);
804 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
805 local ks = getfield(kanji_skip, 'spec')
806 setfield(gx, 'width', bn and getfield(ks, 'width') or 0)
807 setfield(gx, 'stretch', bp and getfield(ks, 'stretch') or 0)
808 setfield(gx, 'shrink', bh and getfield(ks, 'shrink') or 0)
809 setfield(g, 'spec', gx)
810 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
816 get_kanjiskip = function()
817 if Np.auto_kspc or Nq.auto_kspc then
818 local pm, qm = Np.met, Nq.met
819 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
820 return get_kanjiskip_low(true, qm, true, true, true)
822 local gb = get_kanjiskip_low(true, qm, true, true, true)
823 local ga = get_kanjiskip_low(true, pm, true, true, true)
824 return calc_ja_ja_aux(gb, ga, 0, 1)
827 local g = node_copy(zero_glue)
828 set_attr(g, attr_icflag, jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
833 calc_ja_ja_glue = function ()
834 local qm, pm = Nq.met, Np.met
835 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
836 local g, _, kn, kp, kh = new_jfm_glue(qm, Nq.class, Np.class)
837 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
839 local npn, nqn = Np.nuc, Nq.nuc
840 local gb, db, bn, bp, bh
841 = new_jfm_glue(qm, Nq.class,
842 slow_find_char_class(Np.char,
844 local ga, da, an, ap, ah
846 slow_find_char_class(Nq.char,
849 local g = calc_ja_ja_aux(gb, ga, db, da)
851 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
852 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
853 ga = get_kanjiskip_low(false, pm, an, ap, ah)
854 k = calc_ja_ja_aux(gb, ga, db, da)
861 -------------------- 和欧文間空白量の決定
865 local get_xkanjiskip_normal, get_xkanjiskip_jfm
867 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
868 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
869 get_xkanjiskip_normal = function ()
870 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
871 return node_copy(xkanji_skip)
873 local g = node_copy(zero_glue)
874 set_attr(g, attr_icflag, XKANJI_SKIP)
878 get_xkanjiskip_jfm = function (Nn)
880 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
881 g = node_new(id_glue)
882 local gx = node_new(id_glue_spec);
883 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
884 local bk = Nn.met.xkanjiskip or null_skip_table
885 setfield(gx, 'width', bk[1])
886 setfield(gx, 'stretch', bk[2])
887 setfield(gx, 'shrink', bk[3])
888 setfield(g, 'spec', gx)
890 g = node_copy(zero_glue)
892 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
897 -------------------- 隣接した「塊」間の処理
899 local function get_OA_skip()
901 local g, _, kn, kp, kh = new_jfm_glue(
903 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
904 Np.class, getfield(xkanji_skip,'spec'))
907 local function get_OB_skip()
909 return new_jfm_glue(qm, Nq.class,
910 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm),
911 getfield(xkanji_skip,'spec'))
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
919 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
920 if not g then g = get_kanjiskip(true) end
921 handle_penalty_normal(Nq.post, Np.pre, g);
922 real_insert(g); real_insert(k)
923 elseif Nq.met then -- qid==id_hlist
924 local g = non_ihb_flag and get_OA_skip(get_kanjiskip) or get_kanjiskip(true) -- O_A->K
925 handle_penalty_normal(0, Np.pre, g); real_insert(g)
927 local g = non_ihb_flag and get_OA_skip(get_kanjiskip) or get_xkanjiskip(Np) -- O_A->X
928 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
930 local g = non_ihb_flag and get_OA_skip() -- O_A
931 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
932 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
933 else handle_penalty_always(0, Np.pre, g)
937 if mode and Np.kcat%2~=1 then
938 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
943 -- jachar .. (anything)
944 local function handle_nq_jachar()
946 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
947 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
949 local g =non_ihb_flag and get_OB_skip() -- O_B
950 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
951 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
952 else handle_penalty_always(Nq.post, 0, g)
958 -- (anything) .. (和文文字で始まる hlist)
959 local function handle_np_ja_hlist()
961 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
962 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip(true) -- O_B->K
963 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
964 elseif Nq.met then -- Nq.id==id_hlist
965 local g = get_kanjiskip(true) -- K
966 handle_penalty_suppress(0, 0, g); real_insert(g)
968 local g = get_xkanjiskip(Np) -- X
969 handle_penalty_suppress(0, 0, g); real_insert(g)
973 -- (和文文字で終わる hlist) .. (anything)
974 local function handle_nq_ja_hlist()
976 local g = get_xkanjiskip(Nq) -- X
977 handle_penalty_suppress(0, 0, g); real_insert(g)
982 -- Nq が前側のクラスタとなることによる修正
984 local adjust_nq_aux = {
985 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
986 [id_hlist] = function() after_hlist(Nq) end,
987 [id_pbox] = function() after_hlist(Nq) end,
988 [id_disc] = function() after_hlist(Nq) end,
989 [id_pbox_w] = function()
990 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
996 local x = adjust_nq_aux[Nq.id]
1002 -------------------- 開始・終了時の処理
1006 local JWP = luatexja.stack_table_index.JWP
1007 local function handle_list_tail(mode)
1008 adjust_nq(); Np = Nq
1010 -- the current list is to be line-breaked.
1011 -- Insert \jcharwidowpenalty
1012 Bp = widow_Bp; Np = widow_Np
1014 handle_penalty_normal(0, table_current_stack[JWP] or 0)
1017 -- the current list is the contents of a hbox
1018 local npi, pm = Np.id, Np.met
1019 if npi == id_jglyph or (npi==id_pbox and pm) then
1020 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
1022 set_attr(g, attr_icflag, BOXBDD)
1023 head = insert_after(head, Np.last, g)
1030 local function handle_list_head(par_indented)
1031 local npi, pm = Np.id, Np.met
1032 if npi == id_jglyph or (npi==id_pbox and pm) then
1033 if non_ihb_flag then
1034 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1036 set_attr(g, attr_icflag, BOXBDD)
1037 if getid(g)==id_glue and #Bp==0 then
1038 local h = node_new(id_penalty)
1039 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1041 head = insert_before(head, Np.first, g)
1048 -- return value: (the initial cursor lp), (last node)
1051 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1052 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1053 local KSK = luatexja.stack_table_index.KSK
1054 local XSK = luatexja.stack_table_index.XSK
1055 local dir_yoko = luatexja.dir_table.dir_yoko
1056 local dir_tate = luatexja.dir_table.dir_tate
1057 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1058 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1059 local table_pool = {
1060 {}, {}, {first=nil},
1061 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1062 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1063 post=nil, pre=nil, xspc=nil, },
1064 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1065 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1066 post=nil, pre=nil, xspc=nil, },
1068 init_var = function (mode,dir)
1069 -- 1073741823: max_dimen
1070 Bp, widow_Bp, widow_Np, Np, Nq
1071 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1072 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1073 table_current_stack = ltjs.table_current_stack
1075 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1076 local is_dir_tate = list_dir==dir_tate
1077 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1078 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1079 local TEMP = node_new(id_glue)
1080 -- TEMP is a dummy node, which will be freed at the end of the callback.
1081 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1084 kanji_skip = node_new(id_glue); set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1085 local s = skip_table_to_spec(KSK)
1086 setfield(kanji_skip, 'spec', s)
1087 kanjiskip_jfm_flag = (getfield(s, 'width') == 1073741823)
1091 xkanji_skip = node_new(id_glue); set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1092 local s = skip_table_to_spec(XSK)
1093 setfield(xkanji_skip, 'spec', s)
1094 get_xkanjiskip = (getfield(s, 'width') == 1073741823)
1095 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1099 -- the current list is to be line-breaked:
1100 -- hbox from \parindent is skipped.
1101 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1102 while lp and ((lpi==id_whatsit and lps~=sid_user)
1103 or ((lpi==id_hlist) and (lps==3))) do
1104 if (lpi==id_hlist) and (lps==3) then
1105 Np.char, par_indented = 'parbdd', 'parbdd'
1106 Np.width = getfield(lp, 'width')
1108 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1109 return lp, node_tail(head), par_indented, TEMP
1111 return head, nil, 'boxbdd', TEMP
1116 local ensure_tex_attr = ltjb.ensure_tex_attr
1117 local function cleanup(mode, TEMP)
1118 -- adjust attr_icflag for avoiding error
1119 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1120 node_free(kanji_skip);
1121 node_free(xkanji_skip); node_free(TEMP)
1124 local h = node_next(head)
1125 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1127 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1134 -------------------- 外部から呼ばれる関数
1137 function main(ahead, mode, dir)
1138 if not ahead then return ahead end
1140 local lp, last, par_indented, TEMP = init_var(mode,dir)
1141 lp = calc_np(last, lp)
1143 handle_list_head(par_indented)
1144 lp = calc_np(last,lp); while Np do
1146 local pid, pm = Np.id, Np.met
1148 if pid == id_jglyph then
1149 handle_np_jachar(mode)
1151 if pid==id_hlist then handle_np_ja_hlist()
1152 else handle_np_jachar() end
1154 if Nq.id==id_hlist then handle_nq_ja_hlist()
1155 else handle_nq_jachar() end
1157 lp = calc_np(last,lp)
1159 handle_list_tail(mode)
1161 return cleanup(mode, TEMP)
1166 local IHB = luatexja.userid_table.IHB
1167 local BPAR = luatexja.userid_table.BPAR
1168 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1169 local node_write = Dnode.write
1172 function create_inhibitglue_node()
1173 local tn = node_new(id_whatsit, sid_user)
1174 setfield(tn, 'user_id', IHB)
1175 setfield(tn, 'type', 100)
1176 setfield(tn, 'value', 1)
1180 -- Node for indicating beginning of a paragraph
1181 -- (for ltjsclasses)
1182 function create_beginpar_node()
1183 local tn = node_new(id_whatsit, sid_user)
1184 setfield(tn, 'user_id', BPAR)
1185 setfield(tn, 'type', 100)
1186 setfield(tn, 'value', 1)
1190 local function whatsit_callback(Np, lp, Nq)
1191 if Np and Np.nuc then return Np
1192 elseif Np and getfield(lp, 'user_id') == BPAR then
1193 Np.first = lp; Np.nuc = lp; Np.last = lp
1198 local function whatsit_after_callback(s, Nq, Np)
1199 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1200 local x, y = node_prev(Nq.nuc), Nq.nuc
1201 Nq.first, Nq.nuc, Nq.last = x, x, x
1204 Nq.class = fast_find_char_class('parbdd', Np.met)
1206 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1207 Nq.auto_xspc = false
1209 head = node_remove(head, y)
1215 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1216 "luatexja.beginpar.np_info", 1)
1217 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1218 "luatexja.beginpar.np_info_after", 1)