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 = token.create('ltj@@japanese')[2]
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
86 local table_current_stack
91 local set_np_xspc_jachar
92 local set_np_xspc_jachar_hbox
94 local attr_icflag = luatexbase.attributes['ltj@icflag']
95 local ltjs_orig_char_table = ltjs.orig_char_table
97 local function get_attr_icflag(p)
98 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
101 -------------------- Helper functions
103 -- This function is called only for acquiring `special' characters.
104 local function fast_find_char_class(c,m)
105 return m.chars[c] or 0
109 local slow_find_char_class
111 local start_time_measure = ltjb.start_time_measure
112 local stop_time_measure = ltjb.stop_time_measure
113 slow_find_char_class = function (c, m, oc)
114 local cls = ltjf_find_char_class(oc, m)
115 if c and oc~=c and cls==0 then
116 return ltjf_find_char_class(c, m), oc
123 local zero_glue = node_new(id_glue)
124 spec_zero_glue = to_node(node_new(id_glue_spec))
125 -- must be public, since mentioned from other sources
126 local spec_zero_glue = to_direct(spec_zero_glue)
127 setfield(spec_zero_glue, 'width', 0)
128 setfield(spec_zero_glue, 'stretch', 0)
129 setfield(spec_zero_glue, 'shrink', 0)
130 setfield(spec_zero_glue, 'stretch_order', 0)
131 setfield(spec_zero_glue, 'shrink_order', 0)
132 setfield(zero_glue, 'spec', spec_zero_glue)
134 local function skip_table_to_spec(n)
135 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
136 setfield(g, 'width', st.width)
137 setfield(g, 'stretch', st.stretch)
138 setfield(g, 'shrink', st.shrink)
139 setfield(g, 'stretch_order', st.stretch_order)
140 setfield(g, 'shrink_order', st.shrink_order)
146 local function add_penalty(p,e)
147 local pp = getfield(p, 'penalty')
149 if e<=-10000 then setfield(p, 'penalty', 0) end
150 elseif pp<=-10000 then
151 if e>=10000 then setfield(p, 'penalty', 0) end
154 if pp>=10000 then setfield(p, 'penalty', 10000)
155 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
156 else setfield(p, 'penalty', pp) end
161 diffmet_rule = math.two_paverage
162 function math.two_add(a,b) return a+b end
163 function math.two_average(a,b) return (a+b)*0.5 end
164 function math.two_paverage(a,b) return (a+b)/2 end
165 function math.two_pleft(a,b) return a end
166 function math.two_pright(a,b) return b end
168 local head -- the head of current list
171 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
173 local non_ihb_flag -- JFM グルー挿入抑止用 flag
174 -- false: \inhibitglue 指定時 true: それ以外
176 -------------------- hlist 内の文字の検索
178 local first_char, last_char, find_first_char
180 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
181 local function check_box(box_ptr, box_end)
182 local p = box_ptr; local found_visible_node = false
184 find_first_char = false; last_char = nil
187 while p and p~=box_end do
189 if pid==id_kern and getsubtype(p)==2 then
190 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
192 if pid==id_glyph then
194 if find_first_char then
195 first_char = p; find_first_char = false
197 last_char = p; found_visible_node = true; p=node_next(p)
198 if (not p) or p==box_end then
199 return found_visible_node
201 until getid(p)~=id_glyph
202 pid = getid(p) -- p must be non-nil
205 local pa = get_attr_icflag(p)
206 if pa==IC_PROCESSED then
208 elseif getsubtype(p)==2 then
209 p = node_next(node_next(p));
210 -- Note that another node_next will be executed outside this if-statement.
212 found_visible_node = true
213 find_first_char = false; last_char = nil
215 elseif pid==id_hlist then
216 if PACKED == get_attr_icflag(p) then
217 local s = ltjd_glyph_from_packed(p)
218 if find_first_char then
219 first_char = s; find_first_char = false
221 last_char = s; found_visible_node = true
223 if getfield(p, 'shift')==0 then
224 if check_box(getlist(p), nil) then found_visible_node = true end
226 find_first_char = false; last_char = nil
229 elseif pid==id_math then
230 if find_first_char then
231 first_char = p; find_first_char = false
233 last_char = p; found_visible_node = true
234 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
236 elseif not (pid==id_ins or pid==id_mark
237 or pid==id_adjust or pid==id_whatsit
238 or pid==id_penalty) then
239 found_visible_node = true
240 find_first_char = false; last_char = nil
244 return found_visible_node
247 function check_box_high(Nx, box_ptr, box_end)
248 first_char = nil; last_char = nil; find_first_char = true
249 if check_box(box_ptr, box_end) then
250 local first_char = first_char
252 if getid(first_char)==id_glyph then
253 if getfield(first_char, 'lang') == lang_ja then
254 set_np_xspc_jachar_hbox(Nx, first_char)
256 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
259 set_np_xspc_alchar(Nx, -1,first_char)
266 -------------------- Np の計算と情報取得
268 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
269 function (Np, lp, Nq)
270 if Np.nuc then return Np
272 return Np -- your code
275 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
276 function (stat, Nq, Np) return false end)
281 local traverse = Dnode.traverse
282 local function set_attr_icflag_processed(p)
283 if get_attr_icflag(p)<= ITALIC then
284 set_attr(p, attr_icflag, PROCESSED)
288 local function check_next_ickern(lp)
289 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
290 set_attr(lp, attr_icflag, IC_PROCESSED)
291 Np.last = lp; return node_next(lp)
293 Np.last = Np.nuc; return lp
297 local function calc_np_pbox(lp, last)
298 local first, lpa, nc = (not Np.first), KINSOKU, nil
299 Np.first = Np.first or lp; Np.id = id_pbox
300 set_attr(lp, attr_icflag, get_attr_icflag(lp));
301 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
302 if getid(lp)==id_hlist or getid(lp)==id_vlist then
303 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
304 Np.first = first and nc or Np.first
306 nc, lp = lp, node_next(lp)
308 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
309 -- get_attr_icflag() ではいけない!
312 lp = check_next_ickern(lp)
313 Np.last_char = check_box_high(Np, Np.first, lp)
317 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
318 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
319 local min, max = math.min, math.max
320 local function calc_np_aux_glyph_common(lp)
322 Np.first= (Np.first or lp)
323 if getfield(lp, 'lang') == lang_ja then
325 set_np_xspc_jachar(Np, lp)
327 lp, head, npi, npf = capsule_glyph(lp, Np.met, Np.class, head, tex_dir, lp)
328 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
330 return true, check_next_ickern(lp);
333 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
335 local first_glyph, last_glyph = lp
336 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
337 local y_adjust = has_attr(lp,attr_ablshift) or 0
338 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
339 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
340 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
342 for lx in traverse(lp) do
343 local lai = get_attr_icflag(lx)
344 if lx==last or lai>=PACKED then
347 local lid = getid(lx)
348 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
350 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
351 y_adjust = has_attr(lx,attr_ablshift) or 0
352 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
353 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
354 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
355 elseif lid==id_kern then
356 local ls = getsubtype(lx)
357 if ls==2 then -- アクセント用の kern
358 set_attr(lx, attr_icflag, PROCESSED)
359 lx = node_next(lx) -- lp: アクセント本体
360 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
361 lx = node_next(node_next(lx))
364 elseif (ls==1 and lai==ITALIC) then
365 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
375 if adj_depth>node_depth then
376 r = node_new(id_rule)
377 setfield(r, 'width', 0); setfield(r, 'height', 0)
378 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
379 set_attr(r, attr_icflag, PROCESSED)
382 Np.last_char = last_glyph
383 if r then insert_after(head, first_glyph, r) end
388 local nf, nc = getfont(npn), getchar(npn)
389 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
390 if (ct.left_protruding or 0) == 0 then
391 head = insert_before(head, npn, r)
392 Np.first = (Np.first==npn) and r or npn
393 elseif (ct.right_protruding or 0) == 0 then
394 insert_after(head, npn, r); Np.last, lp = r, r
396 ltjb.package_warning_no_line(
398 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
399 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
400 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
408 local calc_np_auxtable = {
409 [id_glyph] = calc_np_aux_glyph_common,
410 [id_hlist] = function(lp)
412 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
413 set_attr(op, attr_icflag, PROCESSED)
414 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
415 if (flag or getfield(op, 'shift')~=0) then
419 Np.last_char = check_box_high(Np, getlist(op), nil)
423 [id_vlist] = function(lp)
425 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
426 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
430 box_like = function(lp)
431 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
433 return true, node_next(lp)
436 set_attr(lp, attr_icflag, PROCESSED)
437 return false, 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 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
493 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
494 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
495 set_attr(lp, attr_icflag, PROCESSED);
496 return calc_np_aux_glyph_common(lp)
498 Np.first = Np.first or lp
499 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
500 Np.last = lp; return true, node_next(lp)
503 [id_penalty] = function(lp)
504 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
505 return false, node_next(lp)
508 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
509 calc_np_auxtable[13] = calc_np_auxtable.box_like
510 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
511 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
512 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
514 function calc_np(lp, last)
516 -- We assume lp = node_next(Np.last)
517 Np, Nq, non_ihb_flag = Nq, Np, true
518 -- We clear `predefined' entries of Np before pairs() loop,
519 -- because using only pairs() loop is slower.
520 Np.post, Np.pre, Np.xspc = nil, nil, nil
521 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
522 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
523 for k in pairs(Np) do Np[k] = nil end
525 for k = 1,#Bp do Bp[k] = nil end
527 local lpa = has_attr(lp, attr_icflag) or 0
530 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
531 local lq = node_next(lp)
532 head = node_remove(head, lp); node_free(lp); lp = lq
534 return calc_np_pbox(lp, last)
537 k, lp = calc_np_auxtable[getid(lp)](lp)
538 if k then return lp end
545 local calc_np = calc_np
547 -- extract informations from Np
548 -- We think that "Np is a Japanese character" if Np.met~=nil,
549 -- "Np is an alphabetic character" if Np.pre~=nil,
550 -- "Np is not a character" otherwise.
551 after_hlist = nil -- global
552 local after_alchar, extract_np
554 local PRE = luatexja.stack_table_index.PRE
555 local POST = luatexja.stack_table_index.POST
556 local KCAT = luatexja.stack_table_index.KCAT
557 local XSP = luatexja.stack_table_index.XSP
558 local dir_tate = luatexja.dir_table.dir_tate
561 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
562 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
563 local attr_autospc = luatexbase.attributes['ltj@autospc']
564 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
565 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
566 function set_np_xspc_jachar(Nx, x)
567 local m = ltjf_font_metric_table[getfont(x)]
568 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
570 local cls = slow_find_char_class(c, m, c_glyph)
571 Nx.met, Nx.class, Nx.char = m, cls, c;
572 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
573 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
574 Nx.pre = table_current_stack[PRE + c] or 0
575 Nx.post = table_current_stack[POST + c] or 0
576 Nx.xspc = table_current_stack[XSP + c] or 3
577 Nx.kcat = table_current_stack[KCAT + c] or 0
578 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
580 function set_np_xspc_jachar_hbox(Nx, x)
581 local m = ltjf_font_metric_table[getfont(x)]
582 local c = has_attr(x, attr_jchar_code) or getchar(x)
583 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
584 Nx.pre = table_current_stack[PRE + c] or 0
585 Nx.post = table_current_stack[POST + c] or 0
586 Nx.xspc = table_current_stack[XSP + c] or 3
587 Nx.kcat = table_current_stack[KCAT + c] or 0
588 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
592 local floor = math.floor
593 function set_np_xspc_alchar(Nx, c,x, lig)
595 local f = (lig ==1) and nullfunc or node_tail
596 local xc, xs = getfield(x, 'components'), getsubtype(x)
597 while xc and xs and xs%4>=2 do
598 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
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
605 Nx.pre, Nx.post = 0, 0
606 Nx.xspc = table_current_stack[XSP - 1] or 3
609 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
611 local set_np_xspc_alchar = set_np_xspc_alchar
613 -- change the information for the next loop
614 -- (will be done if Nx is an alphabetic character or a hlist)
615 after_hlist = function (Nx)
616 local s = Nx.last_char
618 if getid(s)==id_glyph then
619 if getfield(s, 'lang') == lang_ja then
620 set_np_xspc_jachar_hbox(Nx, s)
622 set_np_xspc_alchar(Nx, getchar(s), s, 2)
625 set_np_xspc_alchar(Nx, -1, s)
628 Nx.pre, Nx.met = nil, nil
632 after_alchar = function (Nx)
633 local x = Nx.last_char
634 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
639 -------------------- 最下層の処理
641 -- change penalties (or create a new penalty, if needed)
642 local function handle_penalty_normal(post, pre, g)
643 local a = (pre or 0) + (post or 0)
645 if (a~=0 and not(g and getid(g)==id_kern)) then
646 local p = node_new(id_penalty)
647 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
648 setfield(p, 'penalty', a)
649 head = insert_before(head, Np.first, p)
651 set_attr(p, attr_icflag, KINSOKU)
653 else for _, v in pairs(Bp) do add_penalty(v,a) end
657 local function handle_penalty_always(post, pre, g)
658 local a = (pre or 0) + (post or 0)
660 if not (g and getid(g)==id_glue) or a~=0 then
661 local p = node_new(id_penalty)
662 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
663 setfield(p, 'penalty', a)
664 head = insert_before(head, Np.first, p)
666 set_attr(p, attr_icflag, KINSOKU)
668 else for _, v in pairs(Bp) do add_penalty(v,a) end
672 local function handle_penalty_suppress(post, pre, g)
673 local a = (pre or 0) + (post or 0)
675 if g and getid(g)==id_glue then
676 local p = node_new(id_penalty)
677 setfield(p, 'penalty', 10000); 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 -- 和文文字間の JFM glue を node 化
686 local function new_jfm_glue(m, bc, ac)
687 -- bc, ac: char classes
688 local g, d = m.char_type[bc][ac], 0
691 n,d = node_copy(g[2]), g[3]
693 local f = node_new(id_glue)
694 set_attr(f, attr_icflag, g[4])
695 setfield(f, 'spec', n)
702 -- Nq.last (kern w) .... (glue/kern g) Np.first
703 local function real_insert(g)
705 head = insert_before(head, Np.first, g)
711 -------------------- 和文文字間空白量の決定
715 local get_kanjiskip_normal, get_kanjiskip_jfm
717 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
718 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
719 get_kanjiskip_normal = function ()
720 if Np.auto_kspc or Nq.auto_kspc then
721 return node_copy(kanji_skip)
723 local g = node_copy(zero_glue)
724 set_attr(g, attr_icflag, KANJI_SKIP)
729 get_kanjiskip_jfm = function ()
731 if Np.auto_kspc or Nq.auto_kspc then
732 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
733 local gx = node_new(id_glue_spec);
734 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
735 local pm, qm = Np.met, Nq.met
736 local bk = qm.kanjiskip or {0, 0, 0}
737 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
738 setfield(gx, 'width', bk[1])
739 setfield(gx, 'stretch', bk[2])
740 setfield(gx, 'shrink', bk[3])
742 local ak = pm.kanjiskip or {0, 0, 0}
743 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
744 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
745 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
747 setfield(g, 'spec', gx)
749 g = node_copy(zero_glue)
751 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
758 local bg_ag = 2*id_glue - id_glue
759 local bg_ak = 2*id_glue - id_kern
760 local bk_ag = 2*id_kern - id_glue
761 local bk_ak = 2*id_kern - id_kern
763 calc_ja_ja_aux = function (gb,ga, db, da)
764 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
765 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
766 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
767 and diffmet_rule ~= math.two_paverage then
768 rbb, rab, rba, raa = 1,0,0,1
772 gb = node_new(id_kern); setfield(gb, 'kern', 0)
775 ga = node_new(id_kern); setfield(ga, 'kern', 0)
778 local k = 2*getid(gb) - getid(ga)
780 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
782 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
783 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
784 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
785 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
786 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
787 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
790 elseif k == bk_ak then
792 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
793 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
796 elseif k == bk_ag then
797 local as = getfield(ga, 'spec')
798 -- gb: kern, ga: glue
799 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
800 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
801 ad = getfield(as, 'stretch')
802 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
803 ad = getfield(as, 'shrink')
804 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
808 local bs = getfield(gb, 'spec')
809 -- gb: glue, ga: kern
810 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
811 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
812 bd = getfield(bs, 'stretch')
813 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
814 bd = getfield(bs, 'shrink')
815 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
822 local function calc_ja_ja_glue()
823 local qm, pm = Nq.met, Np.met
824 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
825 return new_jfm_glue(qm, Nq.class, Np.class)
827 local npn, nqn = Np.nuc, Nq.nuc
828 local gb, db = new_jfm_glue(qm, Nq.class,
829 slow_find_char_class(ltjs_orig_char_table[npn],
831 local ga, da = new_jfm_glue(pm,
832 slow_find_char_class(ltjs_orig_char_table[nqn],
835 return calc_ja_ja_aux(gb, ga, db, da);
839 -------------------- 和欧文間空白量の決定
843 local get_xkanjiskip_normal, get_xkanjiskip_jfm
845 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
846 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
847 get_xkanjiskip_normal = function (Nn)
848 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
849 return node_copy(xkanji_skip)
851 local g = node_copy(zero_glue)
852 set_attr(g, attr_icflag, XKANJI_SKIP)
856 get_xkanjiskip_jfm = function (Nn)
858 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
859 g = node_new(id_glue)
860 local gx = node_new(id_glue_spec);
861 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
862 local bk = Nn.met.xkanjiskip or {0, 0, 0}
863 setfield(gx, 'width', bk[1])
864 setfield(gx, 'stretch', bk[2])
865 setfield(gx, 'shrink', bk[3])
866 setfield(g, 'spec', gx)
868 g = node_copy(zero_glue)
870 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
875 -------------------- 隣接した「塊」間の処理
877 local function get_OA_skip()
879 return new_jfm_glue(pm,
880 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
882 local function get_OB_skip()
884 return new_jfm_glue(qm, Nq.class,
885 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
888 -- (anything) .. jachar
889 local function handle_np_jachar(mode)
891 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
892 local g = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
893 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
894 elseif Nq.met then -- qid==id_hlist
895 local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
896 handle_penalty_normal(0, Np.pre, g); real_insert(g)
898 local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
899 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
901 local g = non_ihb_flag and get_OA_skip() -- O_A
902 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
903 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
904 else handle_penalty_always(0, Np.pre, g)
908 if mode and Np.kcat%2~=1 then
909 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
914 -- jachar .. (anything)
915 local function handle_nq_jachar()
917 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
918 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
920 local g =non_ihb_flag and get_OB_skip() -- O_B
921 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
922 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
923 else handle_penalty_always(Nq.post, 0, g)
929 -- (anything) .. (和文文字で始まる hlist)
930 local function handle_np_ja_hlist()
932 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
933 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
934 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
935 elseif Nq.met then -- Nq.id==id_hlist
936 local g = get_kanjiskip() -- K
937 handle_penalty_suppress(0, 0, g); real_insert(g)
939 local g = get_xkanjiskip(Np) -- X
940 handle_penalty_suppress(0, 0, g); real_insert(g)
944 -- (和文文字で終わる hlist) .. (anything)
945 local function handle_nq_ja_hlist()
947 local g = get_xkanjiskip(Nq) -- X
948 handle_penalty_suppress(0, 0, g); real_insert(g)
953 -- Nq が前側のクラスタとなることによる修正
955 local adjust_nq_aux = {
956 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
957 [id_hlist] = function() after_hlist(Nq) end,
958 [id_pbox] = function() after_hlist(Nq) end,
959 [id_disc] = function() after_hlist(Nq) end,
960 [id_pbox_w] = function()
961 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
967 local x = adjust_nq_aux[Nq.id]
973 -------------------- 開始・終了時の処理
977 local JWP = luatexja.stack_table_index.JWP
978 local function handle_list_tail(mode)
981 -- the current list is to be line-breaked.
982 -- Insert \jcharwidowpenalty
983 Bp = widow_Bp; Np = widow_Np
985 handle_penalty_normal(0,
986 table_current_stack[JWP] or 0)
989 -- the current list is the contents of a hbox
990 local npi, pm = Np.id, Np.met
991 if npi == id_jglyph or (npi==id_pbox and pm) then
992 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
994 set_attr(g, attr_icflag, BOXBDD)
995 head = insert_after(head, Np.last, g)
1002 local function handle_list_head(par_indented)
1003 local npi, pm = Np.id, Np.met
1004 if npi == id_jglyph or (npi==id_pbox and pm) then
1005 if non_ihb_flag then
1006 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1008 set_attr(g, attr_icflag, BOXBDD)
1009 if getid(g)==id_glue and #Bp==0 then
1010 local h = node_new(id_penalty)
1011 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1013 head = insert_before(head, Np.first, g)
1020 -- return value: (the initial cursor lp), (last node)
1023 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1024 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1025 local KSK = luatexja.stack_table_index.KSK
1026 local XSK = luatexja.stack_table_index.XSK
1027 local dir_yoko = luatexja.dir_table.dir_yoko
1028 local dir_tate = luatexja.dir_table.dir_tate
1029 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1030 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1031 init_var = function (mode,dir)
1032 -- 1073741823: max_dimen
1033 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
1034 table_current_stack = ltjs.table_current_stack
1036 list_dir = ltjs.list_dir or dir_yoko
1037 local is_dir_tate = list_dir==dir_tate
1038 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1039 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1041 tex_dir = dir or 'TLT'
1042 kanji_skip = node_new(id_glue)
1043 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1044 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1045 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1046 and get_kanjiskip_jfm or get_kanjiskip_normal
1048 xkanji_skip = node_new(id_glue)
1049 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1050 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1051 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1052 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1055 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1056 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1057 post=nil, pre=nil, xspc=nil,
1060 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1061 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1062 post=nil, pre=nil, xspc=nil,
1065 -- the current list is to be line-breaked:
1066 -- hbox from \parindent is skipped.
1067 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1068 while lp and ((lpi==id_whatsit and lps~=sid_user)
1069 or ((lpi==id_hlist) and (lps==3))) do
1070 if (lpi==id_hlist) and (lps==3) then
1071 Np.char, par_indented = 'parbdd', 'parbdd'
1072 Np.width = getfield(lp, 'width')
1074 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1075 return lp, node_tail(head), par_indented
1077 return head, nil, 'boxbdd'
1082 local tex_set_attr = tex.setattribute
1083 local function cleanup(mode)
1084 -- adjust attr_icflag for avoiding error
1085 tex_set_attr('global', attr_icflag, 0)
1086 node_free(kanji_skip); node_free(xkanji_skip)
1088 local h = node_next(head)
1089 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1091 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1098 -------------------- 外部から呼ばれる関数
1101 function main(ahead, mode, dir)
1102 if not ahead then return ahead end
1104 local lp, last, par_indented = init_var(mode,dir)
1105 lp = calc_np(lp, last)
1107 handle_list_head(par_indented)
1109 return cleanup(mode)
1111 lp = calc_np(lp, last)
1114 local pid, pm = Np.id, Np.met
1116 if pid == id_jglyph then
1117 handle_np_jachar(mode)
1119 if pid==id_hlist then handle_np_ja_hlist()
1120 else handle_np_jachar() end
1122 if Nq.id==id_hlist then handle_nq_ja_hlist()
1123 else handle_nq_jachar() end
1125 lp = calc_np(lp, last)
1127 handle_list_tail(mode)
1128 return cleanup(mode)
1133 local IHB = luatexja.userid_table.IHB
1134 local BPAR = luatexja.userid_table.BPAR
1135 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1136 local node_write = Dnode.write
1139 function create_inhibitglue_node()
1140 local tn = node_new(id_whatsit, sid_user)
1141 setfield(tn, 'user_id', IHB)
1142 setfield(tn, 'type', 100)
1143 setfield(tn, 'value', 1)
1147 -- Node for indicating beginning of a paragraph
1148 -- (for ltjsclasses)
1149 function create_beginpar_node()
1150 local tn = node_new(id_whatsit, sid_user)
1151 setfield(tn, 'user_id', BPAR)
1152 setfield(tn, 'type', 100)
1153 setfield(tn, 'value', 1)
1157 local function whatsit_callback(Np, lp, Nq)
1158 if Np and Np.nuc then return Np
1159 elseif Np and getfield(lp, 'user_id') == BPAR then
1160 Np.first = lp; Np.nuc = lp; Np.last = lp
1165 local function whatsit_after_callback(s, Nq, Np)
1166 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1167 local x, y = node_prev(Nq.nuc), Nq.nuc
1168 Nq.first, Nq.nuc, Nq.last = x, x, x
1171 Nq.class = fast_find_char_class('parbdd', Np.met)
1173 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1174 Nq.auto_xspc = false
1176 head = node_remove(head, y)
1182 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1183 "luatexja.beginpar.np_info", 1)
1184 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1185 "luatexja.beginpar.np_info_after", 1)