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
526 if node.id('local_par') then
527 calc_np_auxtable[node.id('local_par')] = calc_np_auxtable.skip
530 function calc_np(last, lp)
532 -- We assume lp = node_next(Np.last)
533 Np, Nq, non_ihb_flag = Nq, Np, true
534 -- We clear `predefined' entries of Np before pairs() loop,
535 -- because using only pairs() loop is slower.
536 Np.post, Np.pre, Np.xspc = nil, nil, nil
537 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
538 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
539 for k in pairs(Np) do Np[k] = nil end
541 for k = 1,#Bp do Bp[k] = nil end
543 local lpa = has_attr(lp, attr_icflag) or 0
546 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
547 local lq = node_next(lp)
548 head = node_remove(head, lp); node_free(lp); lp = lq
550 return calc_np_pbox(lp, last)
553 k, lp = calc_np_auxtable[getid(lp)](lp)
554 if k then return lp end
561 -- extract informations from Np
562 -- We think that "Np is a Japanese character" if Np.met~=nil,
563 -- "Np is an alphabetic character" if Np.pre~=nil,
564 -- "Np is not a character" otherwise.
565 after_hlist = nil -- global
566 local after_alchar, extract_np
568 local PRE = luatexja.stack_table_index.PRE
569 local POST = luatexja.stack_table_index.POST
570 local KCAT = luatexja.stack_table_index.KCAT
571 local XSP = luatexja.stack_table_index.XSP
572 local dir_tate = luatexja.dir_table.dir_tate
575 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
576 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
577 local attr_autospc = luatexbase.attributes['ltj@autospc']
578 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
579 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
580 function set_np_xspc_jachar(Nx, x)
581 local m = ltjf_font_metric_table[getfont(x)]
582 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
584 local cls = slow_find_char_class(c, m, c_glyph)
585 Nx.met, Nx.class, Nx.char = m, cls, c;
586 local mc = m.char_type; Nx.char_type = mc
587 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
588 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
589 Nx.pre = table_current_stack[PRE + c] or 0
590 Nx.post = table_current_stack[POST + c] or 0
591 Nx.xspc = table_current_stack[XSP + c] or 3
592 Nx.kcat = table_current_stack[KCAT + c] or 0
593 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
596 function set_np_xspc_jachar_hbox(Nx, x)
597 local m = ltjf_font_metric_table[getfont(x)]
598 local c = has_attr(x, attr_jchar_code) or getchar(x)
599 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
600 local mc = m.char_type; Nx.char_type = mc
601 Nx.pre = table_current_stack[PRE + c] or 0
602 Nx.post = table_current_stack[POST + c] or 0
603 Nx.xspc = table_current_stack[XSP + c] or 3
604 Nx.kcat = table_current_stack[KCAT + c] or 0
605 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
609 local floor = math.floor
610 function set_np_xspc_alchar(Nx, c,x, lig)
612 local f = (lig ==1) and nullfunc or node_tail
613 local xc, xs = getfield(x, 'components'), getsubtype(x)
614 while xc and xs and xs%4>=2 do
615 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
618 Nx.pre = table_current_stack[PRE + c] or 0
619 Nx.post = table_current_stack[POST + c] or 0
620 Nx.xspc = table_current_stack[XSP + c] or 3
622 Nx.pre, Nx.post = 0, 0
623 Nx.xspc = table_current_stack[XSP - 1] or 3
626 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
628 local set_np_xspc_alchar = set_np_xspc_alchar
630 -- change the information for the next loop
631 -- (will be done if Nx is an alphabetic character or a hlist)
632 after_hlist = function (Nx)
633 local s = Nx.last_char
635 if getid(s)==id_glyph then
636 if getfield(s, 'lang') == lang_ja then
637 set_np_xspc_jachar_hbox(Nx, s)
639 set_np_xspc_alchar(Nx, getchar(s), s, 2)
642 set_np_xspc_alchar(Nx, -1, s)
645 Nx.pre, Nx.met = nil, nil
649 after_alchar = function (Nx)
650 local x = Nx.last_char
651 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
656 -------------------- 最下層の処理
658 -- change penalties (or create a new penalty, if needed)
659 local function handle_penalty_normal(post, pre, g)
660 local a = (pre or 0) + (post or 0)
662 if (a~=0 and not(g and getid(g)==id_kern)) then
663 local p = node_new(id_penalty)
664 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
665 setfield(p, 'penalty', a)
666 head = insert_before(head, Np.first, p)
668 set_attr(p, attr_icflag, KINSOKU)
670 else for _, v in pairs(Bp) do add_penalty(v,a) end
674 local function handle_penalty_always(post, pre, g)
675 local a = (pre or 0) + (post or 0)
677 if not (g and getid(g)==id_glue) or a~=0 then
678 local p = node_new(id_penalty)
679 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
680 setfield(p, 'penalty', a)
681 head = insert_before(head, Np.first, p)
683 set_attr(p, attr_icflag, KINSOKU)
685 else for _, v in pairs(Bp) do add_penalty(v,a) end
689 local function handle_penalty_suppress(post, pre, g)
690 local a = (pre or 0) + (post or 0)
692 if g and getid(g)==id_glue then
693 local p = node_new(id_penalty)
694 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
696 set_attr(p, attr_icflag, KINSOKU)
698 else for _, v in pairs(Bp) do add_penalty(v,a) end
702 -- 和文文字間の JFM glue を node 化
703 local function new_jfm_glue(mc, bc, ac)
704 -- bc, ac: char classes
708 local f = node_new(id_glue)
709 set_attr(f, attr_icflag, g.priority)
710 setfield(f, 'spec', node_copy(g[2]))
711 return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
713 return node_copy(g[2]), g.ratio, false, false, false
719 -- Nq.last (kern w) .... (glue/kern g) Np.first
720 local function real_insert(g)
722 head = insert_before(head, Np.first, g)
728 -------------------- 和文文字間空白量の決定
731 local bg_ag = 2*id_glue - id_glue
732 local bg_ak = 2*id_glue - id_kern
733 local bk_ag = 2*id_kern - id_glue
734 local bk_ak = 2*id_kern - id_kern
736 local function blend_diffmet(b, a, rb, ra)
737 return round(diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
739 calc_ja_ja_aux = function (gb, ga, db, da)
740 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
741 and diffmet_rule ~= math.two_paverage then
746 gb = node_new(id_kern); setfield(gb, 'kern', 0)
749 ga = node_new(id_kern); setfield(ga, 'kern', 0)
752 local k = 2*getid(gb) - getid(ga)
754 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
756 setfield(bs, 'width', blend_diffmet(
757 getfield(bs, 'width'), getfield(as, 'width'), db, da))
758 setfield(bs, 'stretch', blend_diffmet(
759 getfield(bs, 'stretch'), getfield(as, 'stretch'), db, da))
760 setfield(bs, 'shrink', -blend_diffmet(
761 -getfield(bs, 'shrink'), -getfield(as, 'shrink'), db, da))
764 elseif k == bk_ak then
766 setfield(gb, 'kern', blend_diffmet(
767 getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
770 elseif k == bk_ag then
771 local as = getfield(ga, 'spec')
772 -- gb: kern, ga: glue
773 setfield(as, 'width', blend_diffmet(
774 getfield(gb, 'kern'), getfield(as, 'width'), db, da))
775 setfield(as, 'stretch', blend_diffmet(
776 0, getfield(as, 'stretch'), db, da))
777 setfield(as, 'shrink', -blend_diffmet(
778 0, -getfield(as, 'shrink'), db, da))
782 local bs = getfield(gb, 'spec')
783 -- gb: glue, ga: kern
784 setfield(bs, 'width', blend_diffmet(
785 getfield(bs, 'width'), getfield(ga, 'kern'), db, da))
786 setfield(bs, 'stretch', blend_diffmet(
787 getfield(bs, 'stretch'), 0, db, da))
788 setfield(bs, 'shrink', -blend_diffmet(
789 -getfield(bs, 'shrink'), 0, db, da))
796 local null_skip_table = {0, 0, 0}
798 local get_kanjiskip, kanjiskip_jfm_flag
799 local calc_ja_ja_glue
801 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
802 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
804 get_kanjiskip_low = function(flag, qm, bn, bp, bh)
805 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
806 if kanjiskip_jfm_flag then
807 local g = node_new(id_glue);
808 local gx = node_new(id_glue_spec);
809 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
810 local bk = qm.kanjiskip or null_skip_table
811 setfield(gx, 'width', bn and (bn*bk[1]) or 0)
812 setfield(gx, 'stretch', bp and (bp*bk[2]) or 0)
813 setfield(gx, 'shrink', bh and (bh*bk[3]) or 0)
814 setfield(g, 'spec', gx)
815 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
818 return node_copy(kanji_skip)
820 local g = node_new(id_glue);
821 local gx = node_new(id_glue_spec);
822 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
823 local ks = getfield(kanji_skip, 'spec')
824 setfield(gx, 'width', bn and (bn*getfield(ks, 'width')) or 0)
825 setfield(gx, 'stretch', bp and (bp*getfield(ks, 'stretch')) or 0)
826 setfield(gx, 'shrink', bh and (bh*getfield(ks, 'shrink')) or 0)
827 setfield(g, 'spec', gx)
828 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
834 get_kanjiskip = function()
835 if Np.auto_kspc or Nq.auto_kspc then
836 local pm, qm = Np.met, Nq.met
837 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
838 return get_kanjiskip_low(true, qm, 1, 1, 1)
840 local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
841 local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
842 return calc_ja_ja_aux(gb, ga, 0, 1)
845 local g = node_copy(zero_glue)
846 set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
851 calc_ja_ja_glue = function ()
852 local qm, pm = Nq.met, Np.met
853 local qmc, pmc = qm.char_type, pm.char_type
854 if (qmc==pmc) and (qm.var==pm.var) then
855 local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
856 return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
858 local npn, nqn = Np.nuc, Nq.nuc
859 local gb, db, bn, bp, bh
860 = new_jfm_glue(qmc, Nq.class,
861 slow_find_char_class(Np.char,
863 local ga, da, an, ap, ah
865 slow_find_char_class(Nq.char,
868 local g = calc_ja_ja_aux(gb, ga, db, da)
870 if (pmc==qmc) and (qm.var==pm.var) then
871 gb = get_kanjiskip_low(false, qm, bn, bp, bh)
872 ga = get_kanjiskip_low(false, pm, an, ap, ah)
873 k = calc_ja_ja_aux(gb, ga, db, da)
880 -------------------- 和欧文間空白量の決定
883 local get_xkanjiskip, xkanjiskip_jfm_flag
884 local get_xkanjiskip_normal, get_xkanjiskip_jfm
886 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
887 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
889 get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
890 if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
891 if xkanjiskip_jfm_flag then
892 local g = node_new(id_glue);
893 local gx = node_new(id_glue_spec);
894 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
895 local bk = qm.xkanjiskip or null_skip_table
896 setfield(gx, 'width', bn and bk[1] or 0)
897 setfield(gx, 'stretch', bp and bk[2] or 0)
898 setfield(gx, 'shrink', bh and bk[3] or 0)
899 setfield(g, 'spec', gx)
900 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
903 return node_copy(xkanji_skip)
905 local g = node_new(id_glue);
906 local gx = node_new(id_glue_spec);
907 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
908 local ks = getfield(xkanji_skip, 'spec')
909 setfield(gx, 'width', bn and getfield(ks, 'width') or 0)
910 setfield(gx, 'stretch', bp and getfield(ks, 'stretch') or 0)
911 setfield(gx, 'shrink', bh and getfield(ks, 'shrink') or 0)
912 setfield(g, 'spec', gx)
913 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
919 get_xkanjiskip = function(Nn)
920 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
921 return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
923 local g = node_copy(zero_glue)
924 set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
930 -------------------- 隣接した「塊」間の処理
932 local function get_OA_skip(is_kanji)
934 local g, _, kn, kp, kh = new_jfm_glue(
936 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm),
940 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, pm, kn, kp, kh)
941 elseif is_kanji==1 then
942 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
943 and get_xkanjiskip_low(false, pm, kn, kp, kh)
947 local function get_OB_skip(is_kanji)
949 local g, _, kn, kp, kh = new_jfm_glue(
950 qm.char_type, Nq.class,
951 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
954 k = (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
955 elseif is_kanji==1 then
956 k = ((Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc))
957 and get_xkanjiskip_low(false, qm, kn, kp, kh)
962 -- (anything) .. jachar
963 local function handle_np_jachar(mode)
965 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
967 if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
968 if not g then g = get_kanjiskip() end
969 handle_penalty_normal(Nq.post, Np.pre, g);
970 real_insert(g); real_insert(k)
971 elseif Nq.met then -- qid==id_hlist
973 if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
974 if not g then g = get_kanjiskip() end
975 handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
978 if non_ihb_flag then g, k = get_OA_skip(1) end -- O_A->X
979 if not g then g = get_xkanjiskip(Np) end
980 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
981 real_insert(g); real_insert(k)
983 local g = non_ihb_flag and (get_OA_skip()) -- O_A
984 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
985 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
986 else handle_penalty_always(0, Np.pre, g)
990 if mode and Np.kcat%2~=1 then
991 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
996 -- jachar .. (anything)
997 local function handle_nq_jachar()
999 local g = non_ihb_flag and get_OB_skip(1) or get_xkanjiskip(Nq) -- O_B->X
1000 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
1002 local g =non_ihb_flag and (get_OB_skip()) -- O_B
1003 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
1004 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
1005 else handle_penalty_always(Nq.post, 0, g)
1011 -- (anything) .. (和文文字で始まる hlist)
1012 local function handle_np_ja_hlist()
1014 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
1015 local g = non_ihb_flag and get_OB_skip(0) or get_kanjiskip() -- O_B->K
1016 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
1017 elseif Nq.met then -- Nq.id==id_hlist
1018 local g = get_kanjiskip() -- K
1019 handle_penalty_suppress(0, 0, g); real_insert(g)
1021 local g = get_xkanjiskip(Np) -- X
1022 handle_penalty_suppress(0, 0, g); real_insert(g)
1026 -- (和文文字で終わる hlist) .. (anything)
1027 local function handle_nq_ja_hlist()
1029 local g = get_xkanjiskip(Nq) -- X
1030 handle_penalty_suppress(0, 0, g); real_insert(g)
1035 -- Nq が前側のクラスタとなることによる修正
1037 local adjust_nq_aux = {
1038 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
1039 [id_hlist] = function() after_hlist(Nq) end,
1040 [id_pbox] = function() after_hlist(Nq) end,
1041 [id_disc] = function() after_hlist(Nq) end,
1042 [id_pbox_w] = function()
1043 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
1048 function adjust_nq()
1049 local x = adjust_nq_aux[Nq.id]
1055 -------------------- 開始・終了時の処理
1059 local JWP = luatexja.stack_table_index.JWP
1060 local function handle_list_tail(mode)
1061 adjust_nq(); Np = Nq
1063 -- the current list is to be line-breaked.
1064 -- Insert \jcharwidowpenalty
1065 Bp = widow_Bp; Np = widow_Np
1067 handle_penalty_normal(0, table_current_stack[JWP] or 0)
1070 -- the current list is the contents of a hbox
1071 local npi, pm = Np.id, Np.met
1072 if npi == id_jglyph or (npi==id_pbox and pm) then
1073 local g = new_jfm_glue(pm.char_type, Np.class, fast_find_char_class('boxbdd', pm))
1075 set_attr(g, attr_icflag, BOXBDD)
1076 head = insert_after(head, Np.last, g)
1083 local function handle_list_head(par_indented)
1084 local npi, pm = Np.id, Np.met
1085 if npi == id_jglyph or (npi==id_pbox and pm) then
1086 if non_ihb_flag then
1087 local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
1089 set_attr(g, attr_icflag, BOXBDD)
1090 if getid(g)==id_glue and #Bp==0 then
1091 local h = node_new(id_penalty)
1092 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1094 head = insert_before(head, Np.first, g)
1101 -- return value: (the initial cursor lp), (last node)
1104 local id_local = node.id('local_par')
1105 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1106 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1107 local KSK = luatexja.stack_table_index.KSK
1108 local XSK = luatexja.stack_table_index.XSK
1109 local dir_yoko = luatexja.dir_table.dir_yoko
1110 local dir_tate = luatexja.dir_table.dir_tate
1111 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1112 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1113 local table_pool = {
1114 {}, {}, {first=nil},
1115 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1116 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1117 post=nil, pre=nil, xspc=nil, },
1118 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1119 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1120 post=nil, pre=nil, xspc=nil, },
1122 init_var = function (mode,dir)
1123 -- 1073741823: max_dimen
1124 Bp, widow_Bp, widow_Np, Np, Nq
1125 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1126 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1127 table_current_stack = ltjs.table_current_stack
1129 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1130 local is_dir_tate = list_dir==dir_tate
1131 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1132 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1133 local TEMP = node_new(id_glue)
1134 -- TEMP is a dummy node, which will be freed at the end of the callback.
1135 -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
1138 kanji_skip = node_new(id_glue); set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1139 local s = skip_table_to_spec(KSK)
1140 setfield(kanji_skip, 'spec', s)
1141 kanjiskip_jfm_flag = (getfield(s, 'width') == 1073741823)
1145 xkanji_skip = node_new(id_glue); set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1146 local s = skip_table_to_spec(XSK)
1147 setfield(xkanji_skip, 'spec', s)
1148 xkanjiskip_jfm_flag = (getfield(s, 'width') == 1073741823)
1152 -- the current list is to be line-breaked:
1153 -- hbox from \parindent is skipped.
1154 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1156 ((lpi==id_whatsit and lps~=sid_user)
1157 or ((lpi==id_hlist) and (lps==3))
1158 or (lpi==id_local)) do
1159 if (lpi==id_hlist) and (lps==3) then
1160 Np.char, par_indented = 'parbdd', 'parbdd'
1161 Np.width = getfield(lp, 'width')
1163 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1164 return lp, node_tail(head), par_indented, TEMP
1166 return head, nil, 'boxbdd', TEMP
1171 local ensure_tex_attr = ltjb.ensure_tex_attr
1172 local function cleanup(mode, TEMP)
1173 -- adjust attr_icflag for avoiding error
1174 if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
1175 node_free(kanji_skip);
1176 node_free(xkanji_skip); node_free(TEMP)
1179 local h = node_next(head)
1180 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1182 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1189 -------------------- 外部から呼ばれる関数
1192 function main(ahead, mode, dir)
1193 if not ahead then return ahead end
1195 local lp, last, par_indented, TEMP = init_var(mode,dir)
1196 lp = calc_np(last, lp)
1198 handle_list_head(par_indented)
1199 lp = calc_np(last,lp); while Np do
1201 local pid, pm = Np.id, Np.met
1203 if pid == id_jglyph then
1204 handle_np_jachar(mode)
1206 if pid==id_hlist then handle_np_ja_hlist()
1207 else handle_np_jachar() end
1209 if Nq.id==id_hlist then handle_nq_ja_hlist()
1210 else handle_nq_jachar() end
1212 lp = calc_np(last,lp)
1214 handle_list_tail(mode)
1216 return cleanup(mode, TEMP)
1221 local IHB = luatexja.userid_table.IHB
1222 local BPAR = luatexja.userid_table.BPAR
1223 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1224 local node_write = Dnode.write
1227 function create_inhibitglue_node()
1228 local tn = node_new(id_whatsit, sid_user)
1229 setfield(tn, 'user_id', IHB)
1230 setfield(tn, 'type', 100)
1231 setfield(tn, 'value', 1)
1235 -- Node for indicating beginning of a paragraph
1236 -- (for ltjsclasses)
1237 function create_beginpar_node()
1238 local tn = node_new(id_whatsit, sid_user)
1239 setfield(tn, 'user_id', BPAR)
1240 setfield(tn, 'type', 100)
1241 setfield(tn, 'value', 1)
1245 local function whatsit_callback(Np, lp, Nq)
1246 if Np and Np.nuc then return Np
1247 elseif Np and getfield(lp, 'user_id') == BPAR then
1248 Np.first = lp; Np.nuc = lp; Np.last = lp
1253 local function whatsit_after_callback(s, Nq, Np)
1254 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1255 local x, y = node_prev(Nq.nuc), Nq.nuc
1256 Nq.first, Nq.nuc, Nq.last = x, x, x
1259 Nq.class = fast_find_char_class('parbdd', Np.met)
1261 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1262 Nq.auto_xspc = false
1264 head = node_remove(head, y)
1270 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1271 "luatexja.beginpar.np_info", 1)
1272 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1273 "luatexja.beginpar.np_info_after", 1)