2 -- luatexja/ltj-jfmglue.lua
4 luatexbase.provides_module({
5 name = 'luatexja.jfmglue',
7 description = 'Insertion process of JFM glues and kanjiskip',
9 module('luatexja.jfmglue', package.seeall)
10 local err, warn, info, log = luatexbase .errwarinf(_NAME)
12 luatexja.load_module('base'); local ltjb = luatexja.base
13 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
15 luatexja.load_module('direction'); local ltjd = luatexja.direction
16 luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
19 local nullfunc = function(n) return n end
20 local to_node = node.direct.tonode
21 local to_direct = node.direct.todirect
23 local setfield = node.direct.setfield
24 local setglue = luatexja.setglue
25 local getfield = node.direct.getfield
26 local getid = node.direct.getid
27 local getfont = node.direct.getfont
28 local getlist = node.direct.getlist
29 local getchar = node.direct.getchar
30 local getsubtype = node.direct.getsubtype
33 local lang_ja = luatexja.lang_ja
34 local getlang = node.direct.getlang
36 and function (n) return getlang(n)==lang_ja end
37 or function (n) return getfield(n,'lang')==lang_ja end
40 local has_attr = node.direct.has_attribute
41 local set_attr = node.direct.set_attribute
42 local insert_before = node.direct.insert_before
43 local insert_after = node.direct.insert_after
44 local node_next = node.direct.getnext
45 local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
46 local ltjf_font_metric_table = ltjf.font_metric_table
47 local ltjf_find_char_class = ltjf.find_char_class
48 local node_new = node.direct.new
49 local node_copy = node.direct.copy
50 local node_tail = node.direct.tail
51 local node_free = node.direct.free
52 local node_remove = node.direct.remove
54 local id_glyph = node.id('glyph')
55 local id_hlist = node.id('hlist')
56 local id_vlist = node.id('vlist')
57 local id_rule = node.id('rule')
58 local id_ins = node.id('ins')
59 local id_mark = node.id('mark')
60 local id_adjust = node.id('adjust')
61 local id_disc = node.id('disc')
62 local id_whatsit = node.id('whatsit')
63 local id_math = node.id('math')
64 local id_glue = node.id('glue')
65 local id_kern = node.id('kern')
66 local id_penalty = node.id('penalty')
68 local id_jglyph = 512 -- Japanese character
69 local id_box_like = 256 -- vbox, shifted hbox
70 local id_pbox = 257 -- already processed nodes (by \unhbox)
71 local id_pbox_w = 258 -- cluster which consists of a whatsit
72 local sid_user = node.subtype('user_defined')
74 local ITALIC = luatexja.icflag_table.ITALIC
75 local PACKED = luatexja.icflag_table.PACKED
76 local KINSOKU = luatexja.icflag_table.KINSOKU
77 local FROM_JFM = luatexja.icflag_table.FROM_JFM
78 local PROCESSED = luatexja.icflag_table.PROCESSED
79 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
80 local BOXBDD = luatexja.icflag_table.BOXBDD
81 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
83 local attr_icflag = luatexbase.attributes['ltj@icflag']
86 local table_current_stack
91 local set_np_xspc_jachar
92 local set_np_xspc_jachar_hbox
94 local ltjs_orig_char_table = ltjs.orig_char_table
96 local function get_attr_icflag(p)
97 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
100 -------------------- Helper functions
102 -- This function is called only for acquiring `special' characters.
103 local function fast_find_char_class(c,m)
104 return m.chars[c] or 0
108 local slow_find_char_class
110 local start_time_measure = ltjb.start_time_measure
111 local stop_time_measure = ltjb.stop_time_measure
112 slow_find_char_class = function (c, m, oc)
113 local cls = ltjf_find_char_class(oc, m)
114 if oc~=c and c and cls==0 then
115 return ltjf_find_char_class(c, m)
122 local function skip_table_to_glue(n)
123 local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
124 setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
125 return g, (st.width==1073741823)
132 local setpenalty = node.direct.setpenalty or function(n, a) setfield(n,'penalty',a) end
133 local getpenalty = node.direct.getpenalty or function(n) return getfield(n,'penalty') end
134 function add_penalty(p,e)
135 local pp = getpenalty(p)
136 if (pp>-10000) and (pp<10000) then
137 if e>=10000 then setpenalty(p, 10000)
138 elseif e<=-10000 then setpenalty(p, -10000)
141 if pp>=10000 then setpenalty(p, 10000)
142 elseif pp<=-10000 then setpenalty(p, -10000)
143 else setpenalty(p, pp) end
150 diffmet_rule = math.two_paverage
151 function math.two_add(a,b) return a+b end
152 function math.two_average(a,b) return (a+b)*0.5 end
153 function math.two_paverage(a,b) return (a+b)/2 end
154 function math.two_pleft(a,b) return a end
155 function math.two_pright(a,b) return b end
157 local head -- the head of current list
160 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
162 local non_ihb_flag -- JFM グルー挿入抑止用 flag
163 -- false: \inhibitglue 指定時 true: それ以外
165 -------------------- hlist 内の文字の検索
167 local first_char, last_char, find_first_char
169 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
170 local function check_box(box_ptr, box_end)
171 local p = box_ptr; local found_visible_node = false
173 find_first_char = false; last_char = nil
176 while p and p~=box_end do
178 if pid==id_kern and getsubtype(p)==2 then
179 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
181 if pid==id_glyph then
183 if find_first_char then
184 first_char = p; find_first_char = false
186 last_char = p; found_visible_node = true; p=node_next(p)
187 if (not p) or p==box_end then
188 return found_visible_node
190 until getid(p)~=id_glyph
191 pid = getid(p) -- p must be non-nil
194 local pa = get_attr_icflag(p)
195 if pa==IC_PROCESSED then
197 elseif getsubtype(p)==2 then
198 p = node_next(node_next(p));
199 -- Note that another node_next will be executed outside this if-statement.
201 found_visible_node = true
202 find_first_char = false; last_char = nil
204 elseif pid==id_hlist then
205 if PACKED == get_attr_icflag(p) then
206 local s = ltjd_glyph_from_packed(p)
207 if find_first_char then
208 first_char = s; find_first_char = false
210 last_char = s; found_visible_node = true
212 if getfield(p, 'shift')==0 then
214 if check_box(getlist(p), nil) then found_visible_node = true end
215 find_first_char = false
217 find_first_char = false; last_char = nil
220 elseif pid==id_math then
221 if find_first_char then
222 first_char = p; find_first_char = false
224 last_char = p; found_visible_node = true
225 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
227 elseif not (pid==id_ins or pid==id_mark
228 or pid==id_adjust or pid==id_whatsit
229 or pid==id_penalty) then
230 found_visible_node = true
231 find_first_char = false; last_char = nil
235 return found_visible_node
238 function check_box_high(Nx, box_ptr, box_end)
239 first_char = nil; last_char = nil; find_first_char = true
240 if check_box(box_ptr, box_end) then
241 local first_char = first_char
243 if getid(first_char)==id_glyph then
244 if if_lang_ja(first_char) then
245 set_np_xspc_jachar_hbox(Nx, first_char)
247 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
250 set_np_xspc_alchar(Nx, -1,first_char)
257 -------------------- Np の計算と情報取得
259 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
260 function (Np, lp, Nq)
261 if Np.nuc then return Np
263 return Np -- your code
266 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
267 function (stat, Nq, Np) return false end)
273 local traverse = node.direct.traverse
274 local function check_next_ickern(lp)
275 if lp and getid(lp) == id_kern and ( getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) then
276 set_attr(lp, attr_icflag, IC_PROCESSED);
277 Np.last = lp; return node_next(lp)
279 Np.last = Np.nuc; return lp
283 local function calc_np_pbox(lp, last)
284 local first, lpa, nc = (not Np.first), KINSOKU, nil
285 Np.first = Np.first or lp; Np.id = id_pbox
286 set_attr(lp, attr_icflag, get_attr_icflag(lp));
287 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
288 local lpi = getid(lp)
289 if lpi==id_hlist or lpi==id_vlist then
290 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
291 Np.first = first and nc or Np.first
292 elseif (lpi==id_rule) and (lpa==PACKED) then
294 nc, lp = lp, node_next(lp)
296 nc, lp = lp, node_next(lp)
298 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
299 -- get_attr_icflag() ではいけない!
302 lp = check_next_ickern(lp)
303 Np.last_char = check_box_high(Np, Np.first, lp)
307 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
308 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
309 local min, max = math.min, math.max
310 local function calc_np_aux_glyph_common(lp, acc_flag)
312 Np.first= (Np.first or lp)
313 if if_lang_ja(lp) then
315 local m, mc, cls = set_np_xspc_jachar(Np, lp)
317 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
318 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
320 return true, check_next_ickern(lp);
323 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
325 local first_glyph, last_glyph = lp
326 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
327 local y_adjust = has_attr(lp,attr_ablshift) or 0
328 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
329 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
330 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
332 for lx in traverse(lp) do
333 local lai = get_attr_icflag(lx)
334 if lx==last or lai>=PACKED then
337 local lid = getid(lx)
338 if lid==id_glyph and not if_lang_ja(lx) then
340 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
341 y_adjust = has_attr(lx,attr_ablshift) or 0
342 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
343 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
344 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
345 elseif lid==id_kern then
346 local ls = getsubtype(lx)
347 if ls==2 then -- アクセント用の kern
348 set_attr(lx, attr_icflag, PROCESSED)
349 lx = node_next(lx) -- lx: アクセント本体
350 if getid(lx)==id_glyph then
351 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
352 else -- アクセントは上下にシフトされている
353 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
355 lx = node_next(node_next(lx))
358 elseif (ls==3) or (lai==ITALIC) then
359 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
369 if adj_depth>node_depth then
370 r = node_new(id_rule,3)
371 setfield(r, 'width', 0); setfield(r, 'height', 0)
372 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
373 set_attr(r, attr_icflag, PROCESSED)
376 Np.last_char = last_glyph
377 if r then insert_after(head, first_glyph, r) end
382 local nf, nc = getfont(npn), getchar(npn)
383 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
384 if not ct then -- variation selector
386 elseif (ct.left_protruding or 0) == 0 then
387 head = insert_before(head, npn, r)
388 Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
389 elseif (ct.right_protruding or 0) == 0 then
390 insert_after(head, npn, r); Np.last, lp = r, r
392 ltjb.package_warning_no_line(
394 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
395 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
396 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
404 local calc_np_auxtable
406 local node_end_of_math = node.direct.end_of_math
407 local dir_tate = luatexja.dir_table.dir_tate
408 local sid_start_link = node.subtype('pdf_start_link')
409 local sid_start_thread = node.subtype('pdf_start_thread')
410 local sid_end_link = node.subtype('pdf_end_link')
411 local sid_end_thread = node.subtype('pdf_end_thread')
413 [id_glyph] = calc_np_aux_glyph_common,
414 [id_hlist] = function(lp)
416 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
417 set_attr(op, attr_icflag, PROCESSED)
418 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
419 if (flag or getfield(op, 'shift')~=0) then
423 Np.last_char = check_box_high(Np, getlist(op), nil)
427 [id_vlist] = function(lp)
429 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
430 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
434 box_like = function(lp)
435 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
437 return true, node_next(lp)
439 [id_whatsit] = function(lp)
440 local lps = getsubtype(lp)
441 if lps==sid_user then
442 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
443 local lq = node_next(lp);
444 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
447 set_attr(lp, attr_icflag, PROCESSED)
448 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
451 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
452 return true, node_next(lp)
454 return false, node_next(lp)
458 -- we do special treatment for these whatsit nodes.
459 if lps == sid_start_link or lps == sid_start_thread then
461 elseif lps == sid_end_link or lps == sid_end_thread then
462 Np.first, Nq.last = nil, lp;
464 set_attr(lp, attr_icflag, PROCESSED)
465 return false, node_next(lp)
468 [id_math] = function(lp)
469 Np.first, Np.nuc = (Np.first or lp), lp;
470 set_attr(lp, attr_icflag, PROCESSED)
471 set_np_xspc_alchar(Np, -1, lp)
472 local end_math = node_end_of_math(lp)
473 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
474 set_attr(end_math, attr_icflag, PROCESSED)
475 Np.last, Np.id = end_math, id_math;
476 return true, node_next(end_math);
478 [id_glue] = function(lp)
479 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
480 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
481 return true, node_next(lp)
483 [id_disc] = function(lp)
484 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
485 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
486 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
487 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
488 return true, node_next(lp)
490 [id_kern] = function(lp)
491 if getsubtype(lp)==2 then
492 Np.first = Np.first or lp
493 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
494 if getid(lp)==id_glyph then -- アクセント本体
495 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
496 else -- アクセントは上下にシフトされている
497 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
499 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
500 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
501 set_attr(lp, attr_icflag, PROCESSED);
502 return calc_np_aux_glyph_common(lp, true)
504 Np.first = Np.first or lp
505 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
506 Np.last = lp; return true, node_next(lp)
509 [id_penalty] = function(lp)
510 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
511 return false, node_next(lp)
515 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
516 calc_np_auxtable[15] = calc_np_auxtable.box_like
518 local function calc_np_aux_skip (lp)
519 set_attr(lp, attr_icflag, PROCESSED)
520 return false, node_next(lp)
523 function calc_np(last, lp)
525 -- We assume lp = node_next(Np.last)
526 Np, Nq, non_ihb_flag = Nq, Np, true
527 -- We clear `predefined' entries of Np before pairs() loop,
528 -- because using only pairs() loop is slower.
529 Np.post, Np.pre, Np.xspc = nil, nil, nil
530 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
531 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
532 for k in pairs(Np) do Np[k] = nil end
534 for k = 1,#Bp do Bp[k] = nil end
536 local lpa = has_attr(lp, attr_icflag) or 0
539 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
540 local lq = node_next(lp)
541 head = node_remove(head, lp); node_free(lp); lp = lq
543 return calc_np_pbox(lp, last)
546 k, lp = (calc_np_auxtable[getid(lp)] or calc_np_aux_skip)(lp)
547 if k then return lp end
554 -- extract informations from Np
555 -- We think that "Np is a Japanese character" if Np.met~=nil,
556 -- "Np is an alphabetic character" if Np.pre~=nil,
557 -- "Np is not a character" otherwise.
558 after_hlist = nil -- global
559 local after_alchar, extract_np
561 local PRE = luatexja.stack_table_index.PRE
562 local POST = luatexja.stack_table_index.POST
563 local KCAT = luatexja.stack_table_index.KCAT
564 local XSP = luatexja.stack_table_index.XSP
565 local dir_tate = luatexja.dir_table.dir_tate
568 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
569 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
570 local attr_autospc = luatexbase.attributes['ltj@autospc']
571 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
572 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
573 function set_np_xspc_jachar(Nx, x)
574 local m = ltjf_font_metric_table[getfont(x)]
575 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
577 local cls = slow_find_char_class(c, m, c_glyph)
578 Nx.met, Nx.class, Nx.char = m, cls, c;
579 local mc = m.char_type; Nx.char_type = mc
580 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
581 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
582 Nx.pre = table_current_stack[PRE + c] or 0
583 Nx.post = table_current_stack[POST + c] or 0
584 Nx.xspc = table_current_stack[XSP + c] or 3
585 Nx.kcat = table_current_stack[KCAT + c] or 0
586 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
589 function set_np_xspc_jachar_hbox(Nx, x)
590 local m = ltjf_font_metric_table[getfont(x)]
591 local c = has_attr(x, attr_jchar_code) or getchar(x)
592 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
593 local mc = m.char_type; Nx.char_type = mc
594 Nx.pre = table_current_stack[PRE + c] or 0
595 Nx.post = table_current_stack[POST + c] or 0
596 Nx.xspc = table_current_stack[XSP + c] or 3
597 Nx.kcat = table_current_stack[KCAT + c] or 0
598 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
602 local floor = math.floor
603 function set_np_xspc_alchar(Nx, c,x, lig)
605 local f = (lig ==1) and nullfunc or node_tail
606 local xc, xs = getfield(x, 'components'), getsubtype(x)
607 while xc and xs and xs%4>=2 do
608 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
611 Nx.pre = table_current_stack[PRE + c] or 0
612 Nx.post = table_current_stack[POST + c] or 0
614 Nx.pre, Nx.post = 0, 0
617 Nx.xspc = table_current_stack[XSP + c] or 3
618 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
620 local set_np_xspc_alchar = set_np_xspc_alchar
622 -- change the information for the next loop
623 -- (will be done if Nx is an alphabetic character or a hlist)
624 after_hlist = function (Nx)
625 local s = Nx.last_char
627 if getid(s)==id_glyph then
628 if if_lang_ja(s) then
629 set_np_xspc_jachar_hbox(Nx, s)
631 set_np_xspc_alchar(Nx, getchar(s), s, 2)
634 set_np_xspc_alchar(Nx, -1, s)
637 Nx.pre, Nx.met = nil, nil
641 after_alchar = function (Nx)
642 local x = Nx.last_char
643 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
648 -------------------- 最下層の処理
650 luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', nullfunc)
652 -- change penalties (or create a new penalty, if needed)
653 local function handle_penalty_normal(post, pre, g)
654 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
655 local a = (pre or 0) + (post or 0)
657 if (a~=0 and not(g and getid(g)==id_kern)) 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_always(post, pre, g)
670 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
671 local a = (pre or 0) + (post or 0)
673 if not (g and getid(g)==id_glue) or a~=0 then
674 local p = node_new(id_penalty)
675 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
676 setfield(p, 'penalty', a)
677 head = insert_before(head, Np.first, p)
679 set_attr(p, attr_icflag, KINSOKU)
681 else for _, v in pairs(Bp) do add_penalty(v,a) end
685 local function handle_penalty_suppress(post, pre, g)
686 luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
688 if g and getid(g)==id_glue then
689 local p = node_new(id_penalty)
690 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
692 set_attr(p, attr_icflag, KINSOKU)
695 local a = (pre or 0) + (post or 0)
696 for _, v in pairs(Bp) do add_penalty(v,a) end
700 local function handle_penalty_jwp()
701 local a = table_current_stack[luatexja.stack_table_index.JWP]
702 if #widow_Bp == 0 then
704 local p = node_new(id_penalty)
705 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
706 setfield(p, 'penalty', a)
707 head = insert_before(head, widow_Np.first, p)
709 set_attr(p, attr_icflag, KINSOKU)
711 else for _, v in pairs(widow_Bp) do add_penalty(v,a) end
715 -- 和文文字間の JFM glue を node 化
716 local function new_jfm_glue(mc, bc, ac)
717 -- bc, ac: char classes
721 return node_copy(g[1]), g.ratio, false, false, false
723 local f = node_new(id_glue)
724 set_attr(f, attr_icflag, g.priority)
725 setglue(f, g.width, g.stretch, g.shrink)
726 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
732 -- Nq.last (kern w) .... (glue/kern g) Np.first
733 local function real_insert(g)
735 head = insert_before(head, Np.first, g)
741 -------------------- 和文文字間空白量の決定
744 local round = tex.round
745 local bg_ag = 2*id_glue - id_glue
746 local bg_ak = 2*id_glue - id_kern
747 local bk_ag = 2*id_kern - id_glue
748 local bk_ak = 2*id_kern - id_kern
750 local function blend_diffmet(b, a, rb, ra)
751 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
753 calc_ja_ja_aux = function (gb, ga, db, da)
754 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
755 and diffmet_rule ~= math.two_paverage then
760 gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
763 ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
766 local k = 2*getid(gb) - getid(ga)
769 setglue(gb, blend_diffmet(
770 getfield(gb, 'width'), getfield(ga, 'width'), db, da),
772 getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
774 -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
777 elseif k == bk_ak then
779 setfield(gb, 'kern', blend_diffmet(
780 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
783 elseif k == bk_ag then
784 -- gb: kern, ga: glue
785 setglue(ga, blend_diffmet(
786 getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
788 0, getfield(ga, 'stretch'), db, da),
790 0, -getfield(ga, 'shrink'), db, da))
794 -- gb: glue, ga: kern
795 setglue(gb, blend_diffmet(
796 getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
798 getfield(gb, 'stretch'), 0, db, da),
800 -getfield(gb, 'shrink'), 0, db, da))
807 local null_skip_table = {0, 0, 0}
809 local get_kanjiskip, kanjiskip_jfm_flag
810 local calc_ja_ja_glue
812 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
813 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
815 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
816 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
817 if kanjiskip_jfm_flag then
818 local g = node_new(id_glue);
819 local bk = qm.kanjiskip or null_skip_table
820 setglue(g, bn and (bn*bk[1]) or 0,
821 bp and (bp*bk[2]) or 0,
822 bh and (bh*bk[3]) or 0, 0, 0)
823 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
826 return node_copy(kanji_skip)
828 local g = node_new(id_glue);
830 bn and (bn*getfield(kanji_skip, 'width')) or 0,
831 bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
832 bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
834 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
840 get_kanjiskip = function()
841 if Np.auto_kspc==0 or Nq.auto_kspc==0 then
843 elseif Np.auto_kspc or Nq.auto_kspc then
844 local pm, qm = Np.met, Nq.met
845 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
846 return get_kanjiskip_low(true, qm, 1, 1, 1)
848 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
849 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
850 return calc_ja_ja_aux(gb, ga, 0, 1)
853 local g = node_new(id_glue)
854 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
859 calc_ja_ja_glue = function ()
860 local qm, pm = Nq.met, Np.met
861 local qmc, pmc = qm.char_type, pm.char_type
862 if (qmc==pmc) and (qm.var==pm.var) then
863 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
864 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
866 local npn, nqn = Np.nuc, Nq.nuc
867 local gb, db, bn, bp, bh
868 = new_jfm_glue(qmc, Nq.class,
869 slow_find_char_class(Np.char,
871 local ga, da, an, ap, ah
873 slow_find_char_class(Nq.char,
876 local g = calc_ja_ja_aux(gb, ga, db, da)
878 if (pmc==qmc) and (qm.var==pm.var) then
879 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
880 ga = get_kanjiskip_low(false, pm, an, ap, ah)
881 k = calc_ja_ja_aux(gb, ga, db, da)
888 -------------------- 和欧文間空白量の決定
891 local get_xkanjiskip, xkanjiskip_jfm_flag
892 local get_xkanjiskip_normal, get_xkanjiskip_jfm
894 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
895 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
897 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
898 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
899 if xkanjiskip_jfm_flag then
900 local g = node_new(id_glue);
901 local bk = qm.xkanjiskip or null_skip_table
902 setglue(g, bn and bk[1] or 0,
904 bh and bk[3] or 0, 0, 0)
905 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
908 return node_copy(xkanji_skip)
910 local g = node_new(id_glue);
912 bn and (bn*getfield(xkanji_skip, 'width')) or 0,
913 bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
914 bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
916 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
922 get_xkanjiskip = function(Nn)
923 if Np.auto_xspc==0 or Nq.auto_xspc==0 then
925 elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
926 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
928 local g = node_new(id_glue)
929 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
935 -------------------- 隣接した「塊」間の処理
937 local function combine_spc(name)
938 return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
941 -- NA, NB: alchar or math
942 local function get_NA_skip()
944 local g, _, kn, kp, kh = new_jfm_glue(
946 fast_find_char_class(
947 (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
949 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
950 and get_xkanjiskip_low(false, pm, kn, kp, kh)
953 local function get_NB_skip()
955 local g, _, kn, kp, kh = new_jfm_glue(
956 qm.char_type, Nq.class,
957 fast_find_char_class(
958 (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
960 local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
961 and get_xkanjiskip_low(false, qm, kn, kp, kh)
965 local function get_OA_skip(is_kanji)
967 local g, _, kn, kp, kh = new_jfm_glue(
969 fast_find_char_class(
970 (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
974 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
978 local function get_OB_skip(is_kanji)
980 local g, _, kn, kp, kh = new_jfm_glue(
981 qm.char_type, Nq.class,
982 fast_find_char_class(
983 (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
986 k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
991 -- (anything) .. jachar
992 local function handle_np_jachar(mode)
994 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
996 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
997 if not g then g = get_kanjiskip() end
998 handle_penalty_normal(Nq.post, Np.pre, g);
999 real_insert(g); real_insert(k)
1000 elseif Nq.met then -- qid==id_hlist
1002 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
1003 if not g then g = get_kanjiskip() end
1004 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
1007 if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
1008 if not g then g = get_xkanjiskip(Np) end
1009 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
1010 real_insert(g); real_insert(k)
1012 local g = non_ihb_flag and (get_OA_skip()) -- O_A
1013 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
1014 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
1015 else handle_penalty_always(0, Np.pre, g)
1019 if mode and Np.kcat%2~=1 then
1020 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
1025 -- jachar .. (anything)
1026 local function handle_nq_jachar()
1028 local g = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
1029 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1031 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1032 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1033 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1034 else handle_penalty_always(Nq.post, 0, g)
1040 -- (anything) .. (和文文字で始まる hlist)
1041 local function handle_np_ja_hlist()
1043 if qid==id_jglyph or ((qid==id_pbox or qid == id_pbox_w) and Nq.met) then
1044 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1045 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1046 elseif Nq.met then -- Nq.id==id_hlist
1047 local g = get_kanjiskip() -- K
1048 handle_penalty_suppress(0, 0, g); real_insert(g)
1050 local g = get_xkanjiskip(Np) -- X
1051 handle_penalty_suppress(0, 0, g); real_insert(g)
1055 -- (和文文字で終わる hlist) .. (anything)
1056 local function handle_nq_ja_hlist()
1058 local g = get_xkanjiskip(Nq) -- X
1059 handle_penalty_suppress(0, 0, g); real_insert(g)
1064 -- Nq が前側のクラスタとなることによる修正
1066 local adjust_nq_aux = {
1067 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1068 [id_hlist] = function() after_hlist(Nq) end,
1069 [id_pbox] = function() after_hlist(Nq) end,
1070 [id_disc] = function() after_hlist(Nq) end,
1071 [id_pbox_w] = function()
1072 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1077 function adjust_nq()
1078 local x = adjust_nq_aux[Nq.id]
1084 -------------------- 開始・終了時の処理
1086 local node_prev = node.direct.getprev
1088 local function handle_list_tail(mode, last)
1091 -- the current list is to be line-breaked.
1092 -- Insert \jcharwidowpenalty
1093 if widow_Np.first then handle_penalty_jwp() end
1096 -- the current list is the contents of a hbox
1097 local npi, pm = Np.id, Np.met
1098 if npi == id_jglyph or (npi==id_pbox and pm) then
1099 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1101 set_attr(g, attr_icflag, BOXBDD)
1102 head = insert_after(head, Np.last, g)
1109 local function handle_list_head(par_indented)
1110 local npi, pm = Np.id, Np.met
1111 if npi == id_jglyph or (npi==id_pbox and pm) then
1112 if non_ihb_flag then
1113 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1115 set_attr(g, attr_icflag, BOXBDD)
1116 if getid(g)==id_glue and #Bp==0 then
1117 local h = node_new(id_penalty)
1118 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1120 head = insert_before(head, Np.first, g)
1127 -- return value: (the initial cursor lp), (last node)
1130 local id_local = node.id('local_par')
1131 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1132 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1133 local KSK = luatexja.stack_table_index.KSK
1134 local XSK = luatexja.stack_table_index.XSK
1135 local dir_yoko = luatexja.dir_table.dir_yoko
1136 local dir_tate = luatexja.dir_table.dir_tate
1137 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1138 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1139 local table_pool = {
1140 {}, {}, {first=nil},
1141 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1142 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1143 post=nil, pre=nil, xspc=nil, },
1144 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1145 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1146 post=nil, pre=nil, xspc=nil, },
1148 init_var = function (mode,dir)
1149 -- 1073741823: max_dimen
1150 Bp, widow_Bp, widow_Np, Np, Nq
1151 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1152 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1153 table_current_stack = ltjs.table_current_stack
1155 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1156 local is_dir_tate = list_dir==dir_tate
1157 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1158 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1159 local TEMP = node_new(id_glue)
1160 -- TEMP is a dummy node, which will be freed at the end of the callback.
1161 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1164 kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
1165 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1169 xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
1170 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1174 -- the current list is to be line-breaked:
1175 -- hbox from \parindent is skipped.
1176 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1178 ((lpi==id_whatsit and lps~=sid_user)
1179 or ((lpi==id_hlist) and (lps==3))
1180 or (lpi==id_local)) do
1181 if (lpi==id_hlist) and (lps==3) then
1182 Np.char, par_indented = 'parbdd', 'parbdd'
1183 Np.width = getfield(lp, 'width')
1185 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1186 return lp, node_tail(head), par_indented, TEMP
1188 return head, nil, 'boxbdd', TEMP
1193 local ensure_tex_attr = ltjb.ensure_tex_attr
1194 local function cleanup(mode, TEMP)
1195 -- luatexja.ext_show_node_list(to_node(head), '> ', print)
1196 -- adjust attr_icflag for avoiding error
1197 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1198 node_free(kanji_skip);
1199 node_free(xkanji_skip); node_free(TEMP)
1202 local h = node_next(head)
1203 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1205 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1212 -------------------- 外部から呼ばれる関数
1215 function main(ahead, mode, dir)
1216 if not ahead then return ahead end
1217 --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
1220 local lp, last, par_indented, TEMP = init_var(mode,dir)
1221 lp = calc_np(last, lp)
1223 handle_list_head(par_indented)
1224 lp = calc_np(last,lp);
1227 local pid, pm = Np.id, Np.met
1229 if pid == id_jglyph then
1230 handle_np_jachar(mode)
1232 if pid==id_hlist then handle_np_ja_hlist()
1233 else handle_np_jachar() end
1235 if Nq.id==id_hlist then handle_nq_ja_hlist()
1236 else handle_nq_jachar() end
1238 lp = calc_np(last,lp)
1240 handle_list_tail(mode, last)
1242 --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
1244 return cleanup(mode, TEMP)
1249 local IHB = luatexja.userid_table.IHB
1250 local BPAR = luatexja.userid_table.BPAR
1251 local BOXB = luatexja.userid_table.BOXB
1252 local node_prev = node.direct.getprev
1253 local node_write = node.direct.write
1256 function create_inhibitglue_node()
1257 local tn = node_new(id_whatsit, sid_user)
1258 setfield(tn, 'user_id', IHB)
1259 setfield(tn, 'type', 100)
1260 setfield(tn, 'value', 1)
1264 -- Node for indicating beginning of a paragraph
1265 -- (for ltjsclasses)
1266 function create_beginpar_node()
1267 local tn = node_new(id_whatsit, sid_user)
1268 setfield(tn, 'user_id', BPAR)
1269 setfield(tn, 'type', 100)
1270 setfield(tn, 'value', 1)
1274 -- Node for indicating a head/end of a box
1275 function create_boxbdd_node()
1276 local tn = node_new(id_whatsit, sid_user)
1277 setfield(tn, 'user_id', BOXB)
1278 setfield(tn, 'type', 100)
1279 setfield(tn, 'value', 1)
1283 local function whatsit_callback(Np, lp, Nq)
1284 if Np and Np.nuc then return Np
1285 elseif Np and getfield(lp, 'user_id') == BPAR then
1286 Np.first = lp; Np.nuc = lp; Np.last = lp
1288 elseif Np and getfield(lp, 'user_id') == BOXB then
1289 Np.first = lp; Np.nuc = lp; Np.last = lp
1292 Np.class = fast_find_char_class('boxbdd', Nq.met)
1294 Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
1295 Np.auto_xspc, Np.auto_kspc = 0, 0
1303 local function whatsit_after_callback(s, Nq, Np)
1304 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1305 local x, y = node_prev(Nq.nuc), Nq.nuc
1306 Nq.first, Nq.nuc, Nq.last = x, x, x
1309 Nq.class = fast_find_char_class('parbdd', Np.met)
1311 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1312 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1314 head = node_remove(head, y)
1316 elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
1317 local x, y = node_prev(Nq.nuc), Nq.nuc
1318 Nq.first, Nq.nuc, Nq.last = x, x, x
1321 Nq.class = fast_find_char_class('boxbdd', Np.met)
1323 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1324 Nq.auto_xspc, Nq.auto_kspc = 0, 0
1326 head = node_remove(head, y)
1332 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1333 "luatexja.beginpar.np_info", 1)
1334 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1335 "luatexja.beginpar.np_info_after", 1)