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 local lpi = getid(lp)
300 if lpi==id_hlist or lpi==id_vlist then
301 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
302 Np.first = first and nc or Np.first
303 elseif (lpi==id_rule) and (lpa==PACKED) then
305 nc, lp = lp, node_next(lp)
307 nc, lp = lp, node_next(lp)
309 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
310 -- get_attr_icflag() ではいけない!
313 lp = check_next_ickern(lp)
314 Np.last_char = check_box_high(Np, Np.first, lp)
318 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
319 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
320 local min, max = math.min, math.max
321 local function calc_np_aux_glyph_common(lp)
323 Np.first= (Np.first or lp)
324 if getfield(lp, 'lang') == lang_ja then
326 local m, mc, cls = set_np_xspc_jachar(Np, lp)
328 lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
329 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
331 return true, check_next_ickern(lp);
334 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
336 local first_glyph, last_glyph = lp
337 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
338 local y_adjust = has_attr(lp,attr_ablshift) or 0
339 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
340 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
341 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
343 for lx in traverse(lp) do
344 local lai = get_attr_icflag(lx)
345 if lx==last or lai>=PACKED then
348 local lid = getid(lx)
349 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
351 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
352 y_adjust = has_attr(lx,attr_ablshift) or 0
353 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
354 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
355 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
356 elseif lid==id_kern then
357 local ls = getsubtype(lx)
358 if ls==2 then -- アクセント用の kern
359 set_attr(lx, attr_icflag, PROCESSED)
360 lx = node_next(lx) -- lx: アクセント本体
361 if getid(lx)==id_glyph then
362 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
363 else -- アクセントは上下にシフトされている
364 setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
366 lx = node_next(node_next(lx))
369 elseif (ls==1 and lai==ITALIC) then
370 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
380 if adj_depth>node_depth then
381 r = node_new(id_rule)
382 setfield(r, 'width', 0); setfield(r, 'height', 0)
383 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
384 set_attr(r, attr_icflag, PROCESSED)
387 Np.last_char = last_glyph
388 if r then insert_after(head, first_glyph, r) end
393 local nf, nc = getfont(npn), getchar(npn)
394 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
395 if not ct then -- variation selector
397 elseif (ct.left_protruding or 0) == 0 then
398 head = insert_before(head, npn, r)
399 Np.first = (Np.first==npn) and r or npn
400 elseif (ct.right_protruding or 0) == 0 then
401 insert_after(head, npn, r); Np.last, lp = r, r
403 ltjb.package_warning_no_line(
405 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
406 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
407 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
415 local calc_np_auxtable = {
416 [id_glyph] = calc_np_aux_glyph_common,
417 [id_hlist] = function(lp)
419 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
420 set_attr(op, attr_icflag, PROCESSED)
421 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
422 if (flag or getfield(op, 'shift')~=0) then
426 Np.last_char = check_box_high(Np, getlist(op), nil)
430 [id_vlist] = function(lp)
432 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
433 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
437 box_like = function(lp)
438 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
440 return true, node_next(lp)
443 set_attr(lp, attr_icflag, PROCESSED)
444 return false, node_next(lp)
446 [id_whatsit] = function(lp)
447 local lps = getsubtype(lp)
448 if lps==sid_user then
449 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
450 local lq = node_next(lp);
451 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
454 set_attr(lp, attr_icflag, PROCESSED)
455 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
458 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
459 return true, node_next(lp)
461 return false, node_next(lp)
465 -- we do special treatment for these whatsit nodes.
466 if lps == sid_start_link or lps == sid_start_thread then
468 elseif lps == sid_end_link or lps == sid_end_thread then
469 Np.first, Nq.last = nil, lp;
471 set_attr(lp, attr_icflag, PROCESSED)
472 return false, node_next(lp)
475 [id_math] = function(lp)
476 Np.first, Np.nuc = (Np.first or lp), lp;
477 set_attr(lp, attr_icflag, PROCESSED)
478 set_np_xspc_alchar(Np, -1, lp)
479 local end_math = node_end_of_math(lp)
480 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
481 set_attr(end_math, attr_icflag, PROCESSED)
482 Np.last, Np.id = end_math, id_math;
483 return true, node_next(end_math);
485 [id_glue] = function(lp)
486 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
487 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
488 return true, node_next(lp)
490 [id_disc] = function(lp)
491 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
492 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
493 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
494 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
495 return true, node_next(lp)
497 [id_kern] = function(lp)
498 if getsubtype(lp)==2 then
499 Np.first = Np.first or lp
500 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
501 if getid(lp)==id_glyph then -- アクセント本体
502 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
503 else -- アクセントは上下にシフトされている
504 setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
506 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
507 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
508 set_attr(lp, attr_icflag, PROCESSED);
509 return calc_np_aux_glyph_common(lp)
511 Np.first = Np.first or lp
512 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
513 Np.last = lp; return true, node_next(lp)
516 [id_penalty] = function(lp)
517 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
518 return false, node_next(lp)
521 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
522 calc_np_auxtable[13] = calc_np_auxtable.box_like
523 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
524 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
525 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
527 function calc_np(last, lp)
529 -- We assume lp = node_next(Np.last)
530 Np, Nq, non_ihb_flag = Nq, Np, true
531 -- We clear `predefined' entries of Np before pairs() loop,
532 -- because using only pairs() loop is slower.
533 Np.post, Np.pre, Np.xspc = nil, nil, nil
534 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
535 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
536 for k in pairs(Np) do Np[k] = nil end
538 for k = 1,#Bp do Bp[k] = nil end
540 local lpa = has_attr(lp, attr_icflag) or 0
543 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
544 local lq = node_next(lp)
545 head = node_remove(head, lp); node_free(lp); lp = lq
547 return calc_np_pbox(lp, last)
550 k, lp = calc_np_auxtable[getid(lp)](lp)
551 if k then return lp end
558 -- extract informations from Np
559 -- We think that "Np is a Japanese character" if Np.met~=nil,
560 -- "Np is an alphabetic character" if Np.pre~=nil,
561 -- "Np is not a character" otherwise.
562 after_hlist = nil -- global
563 local after_alchar, extract_np
565 local PRE = luatexja.stack_table_index.PRE
566 local POST = luatexja.stack_table_index.POST
567 local KCAT = luatexja.stack_table_index.KCAT
568 local XSP = luatexja.stack_table_index.XSP
569 local dir_tate = luatexja.dir_table.dir_tate
572 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
573 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
574 local attr_autospc = luatexbase.attributes['ltj@autospc']
575 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
576 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
577 function set_np_xspc_jachar(Nx, x)
578 local m = ltjf_font_metric_table[getfont(x)]
579 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
581 local cls = slow_find_char_class(c, m, c_glyph)
582 Nx.met, Nx.class, Nx.char = m, cls, c;
583 local mc = m.char_type; Nx.char_type = mc
584 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
585 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
586 Nx.pre = table_current_stack[PRE + c] or 0
587 Nx.post = table_current_stack[POST + c] or 0
588 Nx.xspc = table_current_stack[XSP + c] or 3
589 Nx.kcat = table_current_stack[KCAT + c] or 0
590 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
593 function set_np_xspc_jachar_hbox(Nx, x)
594 local m = ltjf_font_metric_table[getfont(x)]
595 local c = has_attr(x, attr_jchar_code) or getchar(x)
596 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
597 local mc = m.char_type; Nx.char_type = mc
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
601 Nx.kcat = table_current_stack[KCAT + c] or 0
602 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
606 local floor = math.floor
607 function set_np_xspc_alchar(Nx, c,x, lig)
609 local f = (lig ==1) and nullfunc or node_tail
610 local xc, xs = getfield(x, 'components'), getsubtype(x)
611 while xc and xs and xs%4>=2 do
612 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
615 Nx.pre = table_current_stack[PRE + c] or 0
616 Nx.post = table_current_stack[POST + c] or 0
617 Nx.xspc = table_current_stack[XSP + c] or 3
619 Nx.pre, Nx.post = 0, 0
620 Nx.xspc = table_current_stack[XSP - 1] or 3
623 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
625 local set_np_xspc_alchar = set_np_xspc_alchar
627 -- change the information for the next loop
628 -- (will be done if Nx is an alphabetic character or a hlist)
629 after_hlist = function (Nx)
630 local s = Nx.last_char
632 if getid(s)==id_glyph then
633 if getfield(s, 'lang') == lang_ja then
634 set_np_xspc_jachar_hbox(Nx, s)
636 set_np_xspc_alchar(Nx, getchar(s), s, 2)
639 set_np_xspc_alchar(Nx, -1, s)
642 Nx.pre, Nx.met = nil, nil
646 after_alchar = function (Nx)
647 local x = Nx.last_char
648 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
653 -------------------- 最下層の処理
655 -- change penalties (or create a new penalty, if needed)
656 local function handle_penalty_normal(post, pre, g)
657 local a = (pre or 0) + (post or 0)
659 if (a~=0 and not(g and getid(g)==id_kern)) 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_always(post, pre, g)
672 local a = (pre or 0) + (post or 0)
674 if not (g and getid(g)==id_glue) or a~=0 then
675 local p = node_new(id_penalty)
676 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
677 setfield(p, 'penalty', a)
678 head = insert_before(head, Np.first, p)
680 set_attr(p, attr_icflag, KINSOKU)
682 else for _, v in pairs(Bp) do add_penalty(v,a) end
686 local function handle_penalty_suppress(post, pre, g)
687 local a = (pre or 0) + (post or 0)
689 if g and getid(g)==id_glue then
690 local p = node_new(id_penalty)
691 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
693 set_attr(p, attr_icflag, KINSOKU)
695 else for _, v in pairs(Bp) do add_penalty(v,a) end
699 -- 和文文字間の JFM glue を node 化
700 local function new_jfm_glue(mc, bc, ac)
701 -- bc, ac: char classes
705 local f = node_new(id_glue)
706 set_attr(f, attr_icflag, g.priority)
707 setfield(f, 'spec', node_copy(g[2]))
708 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
710 return node_copy(g[2]), g.ratio, false, false, false
716 -- Nq.last (kern w) .... (glue/kern g) Np.first
717 local function real_insert(g)
719 head = insert_before(head, Np.first, g)
725 -------------------- 和文文字間空白量の決定
728 local bg_ag = 2*id_glue - id_glue
729 local bg_ak = 2*id_glue - id_kern
730 local bk_ag = 2*id_kern - id_glue
731 local bk_ak = 2*id_kern - id_kern
733 local function blend_diffmet(b, a, rb, ra)
734 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
736 calc_ja_ja_aux = function (gb, ga, db, da)
737 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
738 and diffmet_rule ~= math.two_paverage then
743 gb = node_new(id_kern); setfield(gb, 'kern', 0)
746 ga = node_new(id_kern); setfield(ga, 'kern', 0)
749 local k = 2*getid(gb) - getid(ga)
751 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
753 setfield(bs, 'width', blend_diffmet(
754 getfield(bs, 'width'), getfield(as, 'width'), db, da))
755 setfield(bs, 'stretch', blend_diffmet(
756 getfield(bs, 'stretch'), getfield(as, 'stretch'), db, da))
757 setfield(bs, 'shrink', -blend_diffmet(
758 -getfield(bs, 'shrink'), -getfield(as, 'shrink'), db, da))
761 elseif k == bk_ak then
763 setfield(gb, 'kern', blend_diffmet(
764 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
767 elseif k == bk_ag then
768 local as = getfield(ga, 'spec')
769 -- gb: kern, ga: glue
770 setfield(as, 'width', blend_diffmet(
771 getfield(gb, 'kern'), getfield(as, 'width'), db, da))
772 setfield(as, 'stretch', blend_diffmet(
773 0, getfield(as, 'stretch'), db, da))
774 setfield(as, 'shrink', -blend_diffmet(
775 0, -getfield(as, 'shrink'), db, da))
779 local bs = getfield(gb, 'spec')
780 -- gb: glue, ga: kern
781 setfield(bs, 'width', blend_diffmet(
782 getfield(bs, 'width'), getfield(ga, 'kern'), db, da))
783 setfield(bs, 'stretch', blend_diffmet(
784 getfield(bs, 'stretch'), 0, db, da))
785 setfield(bs, 'shrink', -blend_diffmet(
786 -getfield(bs, 'shrink'), 0, db, da))
793 local null_skip_table = {0, 0, 0}
795 local get_kanjiskip, kanjiskip_jfm_flag
796 local calc_ja_ja_glue
798 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
799 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
801 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
802 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
803 if kanjiskip_jfm_flag then
804 local g = node_new(id_glue);
805 local gx = node_new(id_glue_spec);
806 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
807 local bk = qm.kanjiskip or null_skip_table
808 setfield(gx, 'width', bn and (bn*bk[1]) or 0)
809 setfield(gx, 'stretch', bp and (bp*bk[2]) or 0)
810 setfield(gx, 'shrink', bh and (bh*bk[3]) or 0)
811 setfield(g, 'spec', gx)
812 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
815 return node_copy(kanji_skip)
817 local g = node_new(id_glue);
818 local gx = node_new(id_glue_spec);
819 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
820 local ks = getfield(kanji_skip, 'spec')
821 setfield(gx, 'width', bn and (bn*getfield(ks, 'width')) or 0)
822 setfield(gx, 'stretch', bp and (bp*getfield(ks, 'stretch')) or 0)
823 setfield(gx, 'shrink', bh and (bh*getfield(ks, 'shrink')) or 0)
824 setfield(g, 'spec', gx)
825 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
831 get_kanjiskip = function()
832 if Np.auto_kspc or Nq.auto_kspc then
833 local pm, qm = Np.met, Nq.met
834 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
835 return get_kanjiskip_low(true, qm, 1, 1, 1)
837 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
838 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
839 return calc_ja_ja_aux(gb, ga, 0, 1)
842 local g = node_copy(zero_glue)
843 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
848 calc_ja_ja_glue = function ()
849 local qm, pm = Nq.met, Np.met
850 local qmc, pmc = qm.char_type, pm.char_type
851 if (qmc==pmc) and (qm.var==pm.var) then
852 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
853 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
855 local npn, nqn = Np.nuc, Nq.nuc
856 local gb, db, bn, bp, bh
857 = new_jfm_glue(qmc, Nq.class,
858 slow_find_char_class(Np.char,
860 local ga, da, an, ap, ah
862 slow_find_char_class(Nq.char,
865 local g = calc_ja_ja_aux(gb, ga, db, da)
867 if (pmc==qmc) and (qm.var==pm.var) then
868 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
869 ga = get_kanjiskip_low(false, pm, an, ap, ah)
870 k = calc_ja_ja_aux(gb, ga, db, da)
877 -------------------- 和欧文間空白量の決定
880 local get_xkanjiskip, xkanjiskip_jfm_flag
881 local get_xkanjiskip_normal, get_xkanjiskip_jfm
883 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
884 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
886 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
887 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
888 if xkanjiskip_jfm_flag then
889 local g = node_new(id_glue);
890 local gx = node_new(id_glue_spec);
891 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
892 local bk = qm.xkanjiskip or null_skip_table
893 setfield(gx, 'width', bn and bk[1] or 0)
894 setfield(gx, 'stretch', bp and bk[2] or 0)
895 setfield(gx, 'shrink', bh and bk[3] or 0)
896 setfield(g, 'spec', gx)
897 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
900 return node_copy(xkanji_skip)
902 local g = node_new(id_glue);
903 local gx = node_new(id_glue_spec);
904 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
905 local ks = getfield(xkanji_skip, 'spec')
906 setfield(gx, 'width', bn and getfield(ks, 'width') or 0)
907 setfield(gx, 'stretch', bp and getfield(ks, 'stretch') or 0)
908 setfield(gx, 'shrink', bh and getfield(ks, 'shrink') or 0)
909 setfield(g, 'spec', gx)
910 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
916 get_xkanjiskip = function(Nn)
917 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
918 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
920 local g = node_copy(zero_glue)
921 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
927 -------------------- 隣接した「塊」間の処理
929 local function get_OA_skip(is_kanji)
931 local g, _, kn, kp, kh = new_jfm_glue(
933 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
937 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, pm, kn, kp, kh)
938 elseif is_kanji==1 then
939 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
940 and get_xkanjiskip_low(false, pm, kn, kp, kh)
944 local function get_OB_skip(is_kanji)
946 local g, _, kn, kp, kh = new_jfm_glue(
947 qm.char_type, Nq.class,
948 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
951 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
952 elseif is_kanji==1 then
953 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
954 and get_xkanjiskip_low(false, qm, kn, kp, kh)
959 -- (anything) .. jachar
960 local function handle_np_jachar(mode)
962 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
964 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
965 if not g then g = get_kanjiskip() end
966 handle_penalty_normal(Nq.post, Np.pre, g);
967 real_insert(g); real_insert(k)
968 elseif Nq.met then -- qid==id_hlist
970 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
971 if not g then g = get_kanjiskip() end
972 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
975 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
976 if not g then g = get_xkanjiskip(Np) end
977 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
978 real_insert(g); real_insert(k)
980 local g = non_ihb_flag and (get_OA_skip()) -- O_A
981 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
982 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
983 else handle_penalty_always(0, Np.pre, g)
987 if mode and Np.kcat%2~=1 then
988 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
993 -- jachar .. (anything)
994 local function handle_nq_jachar()
996 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
997 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
999 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1000 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1001 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1002 else handle_penalty_always(Nq.post, 0, g)
1008 -- (anything) .. (和文文字で始まる hlist)
1009 local function handle_np_ja_hlist()
1011 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
1012 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1013 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1014 elseif Nq.met then -- Nq.id==id_hlist
1015 local g = get_kanjiskip() -- K
1016 handle_penalty_suppress(0, 0, g); real_insert(g)
1018 local g = get_xkanjiskip(Np) -- X
1019 handle_penalty_suppress(0, 0, g); real_insert(g)
1023 -- (和文文字で終わる hlist) .. (anything)
1024 local function handle_nq_ja_hlist()
1026 local g = get_xkanjiskip(Nq) -- X
1027 handle_penalty_suppress(0, 0, g); real_insert(g)
1032 -- Nq が前側のクラスタとなることによる修正
1034 local adjust_nq_aux = {
1035 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1036 [id_hlist] = function() after_hlist(Nq) end,
1037 [id_pbox] = function() after_hlist(Nq) end,
1038 [id_disc] = function() after_hlist(Nq) end,
1039 [id_pbox_w] = function()
1040 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1045 function adjust_nq()
1046 local x = adjust_nq_aux[Nq.id]
1052 -------------------- 開始・終了時の処理
1056 local JWP = luatexja.stack_table_index.JWP
1057 local function handle_list_tail(mode)
1058 adjust_nq(); Np = Nq
1060 -- the current list is to be line-breaked.
1061 -- Insert \jcharwidowpenalty
1062 Bp = widow_Bp; Np = widow_Np
1064 handle_penalty_normal(0, table_current_stack[JWP] or 0)
1067 -- the current list is the contents of a hbox
1068 local npi, pm = Np.id, Np.met
1069 if npi == id_jglyph or (npi==id_pbox and pm) then
1070 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1072 set_attr(g, attr_icflag, BOXBDD)
1073 head = insert_after(head, Np.last, g)
1080 local function handle_list_head(par_indented)
1081 local npi, pm = Np.id, Np.met
1082 if npi == id_jglyph or (npi==id_pbox and pm) then
1083 if non_ihb_flag then
1084 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1086 set_attr(g, attr_icflag, BOXBDD)
1087 if getid(g)==id_glue and #Bp==0 then
1088 local h = node_new(id_penalty)
1089 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1091 head = insert_before(head, Np.first, g)
1098 -- return value: (the initial cursor lp), (last node)
1101 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1102 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1103 local KSK = luatexja.stack_table_index.KSK
1104 local XSK = luatexja.stack_table_index.XSK
1105 local dir_yoko = luatexja.dir_table.dir_yoko
1106 local dir_tate = luatexja.dir_table.dir_tate
1107 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1108 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1109 local table_pool = {
1110 {}, {}, {first=nil},
1111 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1112 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1113 post=nil, pre=nil, xspc=nil, },
1114 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1115 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1116 post=nil, pre=nil, xspc=nil, },
1118 init_var = function (mode,dir)
1119 -- 1073741823: max_dimen
1120 Bp, widow_Bp, widow_Np, Np, Nq
1121 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1122 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1123 table_current_stack = ltjs.table_current_stack
1125 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1126 local is_dir_tate = list_dir==dir_tate
1127 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1128 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1129 local TEMP = node_new(id_glue)
1130 -- TEMP is a dummy node, which will be freed at the end of the callback.
1131 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1134 kanji_skip = node_new(id_glue); set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1135 local s = skip_table_to_spec(KSK)
1136 setfield(kanji_skip, 'spec', s)
1137 kanjiskip_jfm_flag = (getfield(s, 'width') == 1073741823)
1141 xkanji_skip = node_new(id_glue); set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1142 local s = skip_table_to_spec(XSK)
1143 setfield(xkanji_skip, 'spec', s)
1144 xkanjiskip_jfm_flag = (getfield(s, 'width') == 1073741823)
1148 -- the current list is to be line-breaked:
1149 -- hbox from \parindent is skipped.
1150 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1151 while lp and ((lpi==id_whatsit and lps~=sid_user)
1152 or ((lpi==id_hlist) and (lps==3))) do
1153 if (lpi==id_hlist) and (lps==3) then
1154 Np.char, par_indented = 'parbdd', 'parbdd'
1155 Np.width = getfield(lp, 'width')
1157 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1158 return lp, node_tail(head), par_indented, TEMP
1160 return head, nil, 'boxbdd', TEMP
1165 local ensure_tex_attr = ltjb.ensure_tex_attr
1166 local function cleanup(mode, TEMP)
1167 -- adjust attr_icflag for avoiding error
1168 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1169 node_free(kanji_skip);
1170 node_free(xkanji_skip); node_free(TEMP)
1173 local h = node_next(head)
1174 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1176 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1183 -------------------- 外部から呼ばれる関数
1186 function main(ahead, mode, dir)
1187 if not ahead then return ahead end
1189 local lp, last, par_indented, TEMP = init_var(mode,dir)
1190 lp = calc_np(last, lp)
1192 handle_list_head(par_indented)
1193 lp = calc_np(last,lp); while Np do
1195 local pid, pm = Np.id, Np.met
1197 if pid == id_jglyph then
1198 handle_np_jachar(mode)
1200 if pid==id_hlist then handle_np_ja_hlist()
1201 else handle_np_jachar() end
1203 if Nq.id==id_hlist then handle_nq_ja_hlist()
1204 else handle_nq_jachar() end
1206 lp = calc_np(last,lp)
1208 handle_list_tail(mode)
1210 return cleanup(mode, TEMP)
1215 local IHB = luatexja.userid_table.IHB
1216 local BPAR = luatexja.userid_table.BPAR
1217 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1218 local node_write = Dnode.write
1221 function create_inhibitglue_node()
1222 local tn = node_new(id_whatsit, sid_user)
1223 setfield(tn, 'user_id', IHB)
1224 setfield(tn, 'type', 100)
1225 setfield(tn, 'value', 1)
1229 -- Node for indicating beginning of a paragraph
1230 -- (for ltjsclasses)
1231 function create_beginpar_node()
1232 local tn = node_new(id_whatsit, sid_user)
1233 setfield(tn, 'user_id', BPAR)
1234 setfield(tn, 'type', 100)
1235 setfield(tn, 'value', 1)
1239 local function whatsit_callback(Np, lp, Nq)
1240 if Np and Np.nuc then return Np
1241 elseif Np and getfield(lp, 'user_id') == BPAR then
1242 Np.first = lp; Np.nuc = lp; Np.last = lp
1247 local function whatsit_after_callback(s, Nq, Np)
1248 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1249 local x, y = node_prev(Nq.nuc), Nq.nuc
1250 Nq.first, Nq.nuc, Nq.last = x, x, x
1253 Nq.class = fast_find_char_class('parbdd', Np.met)
1255 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1256 Nq.auto_xspc = false
1258 head = node_remove(head, y)
1264 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1265 "luatexja.beginpar.np_info", 1)
1266 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1267 "luatexja.beginpar.np_info_after", 1)