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
93 local attr_icflag = luatexbase.attributes['ltj@icflag']
94 local ltjs_orig_char_table = ltjs.orig_char_table
96 local function get_attr_icflag(p)
97 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
100 -------------------- Helper functions
102 -- This function is called only for acquiring `special' characters.
103 local function fast_find_char_class(c,m)
104 return m.chars[c] or 0
108 local slow_find_char_class
110 local start_time_measure = ltjb.start_time_measure
111 local stop_time_measure = ltjb.stop_time_measure
112 slow_find_char_class = function (c, m, oc)
113 local cls = ltjf_find_char_class(oc, m)
114 if oc~=c and cls==0 then
115 return ltjf_find_char_class(-c, m), oc
122 local zero_glue = node_new(id_glue)
123 spec_zero_glue = to_node(node_new(id_glue_spec))
124 -- must be public, since mentioned from other sources
125 local spec_zero_glue = to_direct(spec_zero_glue)
126 setfield(spec_zero_glue, 'width', 0)
127 setfield(spec_zero_glue, 'stretch', 0)
128 setfield(spec_zero_glue, 'shrink', 0)
129 setfield(spec_zero_glue, 'stretch_order', 0)
130 setfield(spec_zero_glue, 'shrink_order', 0)
131 setfield(zero_glue, 'spec', spec_zero_glue)
133 local function skip_table_to_spec(n)
134 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
135 setfield(g, 'width', st.width)
136 setfield(g, 'stretch', st.stretch)
137 setfield(g, 'shrink', st.shrink)
138 setfield(g, 'stretch_order', st.stretch_order)
139 setfield(g, 'shrink_order', st.shrink_order)
145 local function add_penalty(p,e)
146 local pp = getfield(p, 'penalty')
148 if e<=-10000 then setfield(p, 'penalty', 0) end
149 elseif pp<=-10000 then
150 if e>=10000 then setfield(p, 'penalty', 0) end
153 if pp>=10000 then setfield(p, 'penalty', 10000)
154 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
155 else setfield(p, 'penalty', pp) end
160 diffmet_rule = math.two_paverage
161 function math.two_add(a,b) return a+b end
162 function math.two_average(a,b) return (a+b)*0.5 end
163 function math.two_paverage(a,b) return (a+b)/2 end
164 function math.two_pleft(a,b) return a end
165 function math.two_pright(a,b) return b end
167 local head -- the head of current list
170 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
172 local non_ihb_flag -- JFM グルー挿入抑止用 flag
173 -- false: \inhibitglue 指定時 true: それ以外
175 -------------------- hlist 内の文字の検索
177 local first_char, last_char, find_first_char
179 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
180 local function check_box(box_ptr, box_end)
181 local p = box_ptr; local found_visible_node = false
183 find_first_char = false; last_char = nil
186 while p and p~=box_end do
188 if pid==id_kern and getsubtype(p)==2 then
189 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
191 if pid==id_glyph then
193 if find_first_char then
194 first_char = p; find_first_char = false
196 last_char = p; found_visible_node = true; p=node_next(p)
197 if (not p) or p==box_end then
198 return found_visible_node
200 until getid(p)~=id_glyph
201 pid = getid(p) -- p must be non-nil
204 local pa = get_attr_icflag(p)
205 if pa==IC_PROCESSED then
207 elseif getsubtype(p)==2 then
208 p = node_next(node_next(p));
209 -- Note that another node_next will be executed outside this if-statement.
211 found_visible_node = true
212 find_first_char = false; last_char = nil
214 elseif pid==id_hlist then
215 if PACKED == get_attr_icflag(p) then
216 local s = ltjd_glyph_from_packed(p)
217 if find_first_char then
218 first_char = s; find_first_char = false
220 last_char = s; found_visible_node = true
222 if getfield(p, 'shift')==0 then
223 if check_box(getlist(p), nil) then found_visible_node = true end
225 find_first_char = false; last_char = nil
228 elseif pid==id_math then
229 if find_first_char then
230 first_char = p; find_first_char = false
232 last_char = p; found_visible_node = true
233 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
235 elseif not (pid==id_ins or pid==id_mark
236 or pid==id_adjust or pid==id_whatsit
237 or pid==id_penalty) then
238 found_visible_node = true
239 find_first_char = false; last_char = nil
243 return found_visible_node
246 function check_box_high(Nx, box_ptr, box_end)
247 first_char = nil; last_char = nil; find_first_char = true
248 if check_box(box_ptr, box_end) then
249 local first_char = first_char
251 if getid(first_char)==id_glyph then
252 if getfield(first_char, 'lang') == lang_ja then
253 set_np_xspc_jachar_hbox(Nx, first_char)
255 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
258 set_np_xspc_alchar(Nx, -1,first_char)
265 -------------------- Np の計算と情報取得
267 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
268 function (Np, lp, Nq)
269 if Np.nuc then return Np
271 return Np -- your code
274 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
275 function (stat, Nq, Np) return false end)
280 local traverse = Dnode.traverse
281 local function set_attr_icflag_processed(p)
282 if get_attr_icflag(p)<= ITALIC then
283 set_attr(p, attr_icflag, PROCESSED)
287 local function check_next_ickern(lp)
288 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
289 set_attr(lp, attr_icflag, IC_PROCESSED)
290 Np.last = lp; return node_next(lp)
292 Np.last = Np.nuc; return lp
296 local function calc_np_pbox(lp, last)
297 local first, lpa, nc = (not Np.first), KINSOKU, nil
298 Np.first = Np.first or lp; Np.id = id_pbox
299 set_attr(lp, attr_icflag, get_attr_icflag(lp));
300 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
301 if getid(lp)==id_hlist or getid(lp)==id_vlist then
302 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
303 Np.first = first and nc or Np.first
305 nc, lp = lp, node_next(lp)
307 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
308 -- get_attr_icflag() ではいけない!
311 lp = check_next_ickern(lp)
312 Np.last_char = check_box_high(Np, Np.first, lp)
316 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
317 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
318 local min, max = math.min, math.max
319 local function calc_np_aux_glyph_common(lp)
322 if ltjs_orig_char_table[lp] then
324 set_np_xspc_jachar(Np, lp)
326 lp, head, npi, npf = capsule_glyph(lp, Np.met, Np.class, head, tex_dir, lp)
327 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
329 return true, check_next_ickern(lp);
332 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
334 local first_glyph, last_glyph = lp
335 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
336 local y_adjust = has_attr(lp,attr_ablshift) or 0
337 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
338 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
339 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
341 for lx in traverse(lp) do
342 local lai = get_attr_icflag(lx)
343 if lx==last or lai>=PACKED then
346 local lid = getid(lx)
347 if lid==id_glyph and not ltjs_orig_char_table[lx] then
349 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
350 y_adjust = has_attr(lx,attr_ablshift) or 0
351 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
352 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
353 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
354 elseif lid==id_kern then
355 local ls = getsubtype(lx)
356 if ls==2 then -- アクセント用の kern
357 set_attr(lx, attr_icflag, PROCESSED)
358 lx = node_next(lx) -- lp: アクセント本体
359 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
360 lx = node_next(node_next(lx))
363 elseif (ls==1 and lai==ITALIC) then
364 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
374 if adj_depth>node_depth then
375 r = node_new(id_rule)
376 setfield(r, 'width', 0); setfield(r, 'height', 0)
377 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
378 set_attr(r, attr_icflag, PROCESSED)
381 Np.last_char = last_glyph
382 if r then insert_after(head, first_glyph, r) end
387 local nf, nc = getfont(npn), getchar(npn)
388 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
389 if (ct.left_protruding or 0) == 0 then
390 head = insert_before(head, npn, r)
391 Np.first = (Np.first==npn) and r or npn
392 elseif (ct.right_protruding or 0) == 0 then
393 insert_after(head, npn, r); Np.last, lp = r, r
395 ltjb.package_warning_no_line(
397 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
398 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
399 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
407 local calc_np_auxtable = {
408 [id_glyph] = function (lp)
409 Np.first= (Np.first or lp)
410 return calc_np_aux_glyph_common(lp)
412 [id_hlist] = function(lp)
414 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
415 set_attr(op, attr_icflag, PROCESSED)
416 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
417 if (flag or getfield(op, 'shift')~=0) then
421 Np.last_char = check_box_high(Np, getlist(op), nil)
425 [id_vlist] = function(lp)
427 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
428 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
432 box_like = function(lp)
433 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
435 return true, node_next(lp)
438 set_attr(lp, attr_icflag, PROCESSED)
439 return false, node_next(lp)
441 [id_whatsit] = function(lp)
442 local lps = getsubtype(lp)
443 if lps==sid_user then
444 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
445 local lq = node_next(lp);
446 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
449 set_attr(lp, attr_icflag, PROCESSED)
450 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
453 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
454 return true, node_next(lp)
456 return false, node_next(lp)
460 -- we do special treatment for these whatsit nodes.
461 if lps == sid_start_link or lps == sid_start_thread then
463 elseif lps == sid_end_link or lps == sid_end_thread then
464 Np.first, Nq.last = nil, lp;
466 set_attr(lp, attr_icflag, PROCESSED)
467 return false, node_next(lp)
470 [id_math] = function(lp)
471 Np.first, Np.nuc = (Np.first or lp), lp;
472 set_attr(lp, attr_icflag, PROCESSED)
473 set_np_xspc_alchar(Np, -1, lp)
474 local end_math = node_end_of_math(lp)
475 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
476 set_attr(end_math, attr_icflag, PROCESSED)
477 Np.last, Np.id = end_math, id_math;
478 return true, node_next(end_math);
480 [id_glue] = function(lp)
481 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
482 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
483 return true, node_next(lp)
485 [id_disc] = 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 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
489 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
490 return true, node_next(lp)
492 [id_kern] = function(lp)
493 Np.first = Np.first or lp
494 if getsubtype(lp)==2 then
495 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
496 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
497 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
498 set_attr(lp, attr_icflag, PROCESSED);
499 return calc_np_aux_glyph_common(lp)
501 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
502 Np.last = lp; return true, node_next(lp)
505 [id_penalty] = function(lp)
506 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
507 return false, node_next(lp)
510 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
511 calc_np_auxtable[13] = calc_np_auxtable.box_like
512 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
513 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
514 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
516 function calc_np(lp, last)
518 -- We assume lp = node_next(Np.last)
519 Np, Nq, non_ihb_flag = Nq, Np, true
520 -- We clear `predefined' entries of Np before pairs() loop,
521 -- because using only pairs() loop is slower.
522 Np.post, Np.pre, Np.xspc = nil, nil, nil
523 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
524 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
525 for k in pairs(Np) do Np[k] = nil end
527 for k = 1,#Bp do Bp[k] = nil end
529 local lpa = has_attr(lp, attr_icflag) or 0
532 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
533 local lq = node_next(lp)
534 head = node_remove(head, lp); node_free(lp); lp = lq
536 return calc_np_pbox(lp, last)
539 k, lp = calc_np_auxtable[getid(lp)](lp)
540 if k then return lp end
547 local calc_np = calc_np
549 -- extract informations from Np
550 -- We think that "Np is a Japanese character" if Np.met~=nil,
551 -- "Np is an alphabetic character" if Np.pre~=nil,
552 -- "Np is not a character" otherwise.
553 after_hlist = nil -- global
554 local after_alchar, extract_np
556 local PRE = luatexja.stack_table_index.PRE
557 local POST = luatexja.stack_table_index.POST
558 local KCAT = luatexja.stack_table_index.KCAT
559 local XSP = luatexja.stack_table_index.XSP
560 local dir_tate = luatexja.dir_table.dir_tate
563 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
564 local attr_autospc = luatexbase.attributes['ltj@autospc']
565 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
566 function set_np_xspc_jachar_yoko(Nx, x)
567 local m = ltjf_font_metric_table[getfont(x)]
568 local cls, c = slow_find_char_class(ltjs_orig_char_table[x], m, getchar(x))
569 Nx.met = m; Nx.class = cls
570 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
571 Nx.pre = table_current_stack[PRE + c] or 0
572 Nx.post = table_current_stack[POST + c] or 0
573 Nx.xspc = table_current_stack[XSP + c] or 3
574 Nx.kcat = table_current_stack[KCAT + c] or 0
575 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
577 function set_np_xspc_jachar_tate(Nx, x)
578 local m = ltjf_font_metric_table[getfont(x)]
580 local c1, c2 = getchar(x), ltjs_orig_char_table[x][1]
581 c = ltjs_orig_char_table[x][2] or c1 or c2
582 cls = ltjf_find_char_class(c, m)
583 if cls==0 then cls = slow_find_char_class(c2, m, c1) end
584 Nx.met = m; Nx.class = cls;
585 if cls~=0 then set_attr(x, attr_jchar_class, cls) 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)
592 local function set_np_xspc_jachar_hbox(Nx, x)
593 local m = ltjf_font_metric_table[getfont(x)]
595 Nx.met = m; Nx.class = has_attr(x, attr_jchar_class) or 0;
596 Nx.pre = table_current_stack[PRE + c] or 0
597 Nx.post = table_current_stack[POST + c] or 0
598 Nx.xspc = table_current_stack[XSP + c] or 3
599 Nx.kcat = table_current_stack[KCAT + c] or 0
600 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
604 local floor = math.floor
605 function set_np_xspc_alchar(Nx, c,x, lig)
607 local f = (lig ==1) and nullfunc or node_tail
608 local xc, xs = getfield(x, 'components'), getsubtype(x)
609 while xc and xs and xs%4>=2 do
610 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
613 Nx.pre = table_current_stack[PRE + c] or 0
614 Nx.post = table_current_stack[POST + c] or 0
615 Nx.xspc = table_current_stack[XSP + c] or 3
617 Nx.pre, Nx.post = 0, 0
618 Nx.xspc = table_current_stack[XSP - 1] or 3
621 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
623 local set_np_xspc_alchar = set_np_xspc_alchar
625 -- change the information for the next loop
626 -- (will be done if Nx is an alphabetic character or a hlist)
627 after_hlist = function (Nx)
628 local s = Nx.last_char
630 if getid(s)==id_glyph then
631 if getfield(s, 'lang') == lang_ja then
632 set_np_xspc_jachar_hbox(Nx, s)
634 set_np_xspc_alchar(Nx, getchar(s), s, 2)
637 set_np_xspc_alchar(Nx, -1, s)
640 Nx.pre, Nx.met = nil, nil
644 after_alchar = function (Nx)
645 local x = Nx.last_char
646 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
651 -------------------- 最下層の処理
653 -- change penalties (or create a new penalty, if needed)
654 local function handle_penalty_normal(post, pre, g)
655 local a = (pre or 0) + (post or 0)
657 if (a~=0 and not(g and getid(g)==id_kern)) then
658 local p = node_new(id_penalty)
659 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
660 setfield(p, 'penalty', a)
661 head = insert_before(head, Np.first, p)
663 set_attr(p, attr_icflag, KINSOKU)
665 else for _, v in pairs(Bp) do add_penalty(v,a) end
669 local function handle_penalty_always(post, pre, g)
670 local a = (pre or 0) + (post or 0)
672 if not (g and getid(g)==id_glue) or a~=0 then
673 local p = node_new(id_penalty)
674 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
675 setfield(p, 'penalty', a)
676 head = insert_before(head, Np.first, p)
678 set_attr(p, attr_icflag, KINSOKU)
680 else for _, v in pairs(Bp) do add_penalty(v,a) end
684 local function handle_penalty_suppress(post, pre, g)
685 local a = (pre or 0) + (post or 0)
687 if g and getid(g)==id_glue then
688 local p = node_new(id_penalty)
689 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
691 set_attr(p, attr_icflag, KINSOKU)
693 else for _, v in pairs(Bp) do add_penalty(v,a) end
697 -- 和文文字間の JFM glue を node 化
698 local function new_jfm_glue(m, bc, ac)
699 -- bc, ac: char classes
700 local g, d = m.char_type[bc][ac], 0
703 n,d = node_copy(g[2]), g[3]
705 local f = node_new(id_glue)
706 set_attr(f, attr_icflag, g[4])
707 setfield(f, 'spec', n)
714 -- Nq.last (kern w) .... (glue/kern g) Np.first
715 local function real_insert(g)
717 head = insert_before(head, Np.first, g)
723 -------------------- 和文文字間空白量の決定
727 local get_kanjiskip_normal, get_kanjiskip_jfm
729 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
730 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
731 get_kanjiskip_normal = function ()
732 if Np.auto_kspc or Nq.auto_kspc then
733 return node_copy(kanji_skip)
735 local g = node_copy(zero_glue)
736 set_attr(g, attr_icflag, KANJI_SKIP)
741 get_kanjiskip_jfm = function ()
743 if Np.auto_kspc or Nq.auto_kspc then
744 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
745 local gx = node_new(id_glue_spec);
746 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
747 local pm, qm = Np.met, Nq.met
748 local bk = qm.kanjiskip or {0, 0, 0}
749 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
750 setfield(gx, 'width', bk[1])
751 setfield(gx, 'stretch', bk[2])
752 setfield(gx, 'shrink', bk[3])
754 local ak = pm.kanjiskip or {0, 0, 0}
755 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
756 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
757 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
759 setfield(g, 'spec', gx)
761 g = node_copy(zero_glue)
763 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
770 local bg_ag = 2*id_glue - id_glue
771 local bg_ak = 2*id_glue - id_kern
772 local bk_ag = 2*id_kern - id_glue
773 local bk_ak = 2*id_kern - id_kern
775 calc_ja_ja_aux = function (gb,ga, db, da)
776 local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合
777 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合
778 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
779 and diffmet_rule ~= math.two_paverage then
780 rbb, rab, rba, raa = 1,0,0,1
784 gb = node_new(id_kern); setfield(gb, 'kern', 0)
787 ga = node_new(id_kern); setfield(ga, 'kern', 0)
790 local k = 2*getid(gb) - getid(ga)
792 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
794 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
795 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
796 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
797 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
798 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
799 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
802 elseif k == bk_ak then
804 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
805 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
808 elseif k == bk_ag then
809 local as = getfield(ga, 'spec')
810 -- gb: kern, ga: glue
811 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
812 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
813 ad = getfield(as, 'stretch')
814 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
815 ad = getfield(as, 'shrink')
816 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
820 local bs = getfield(gb, 'spec')
821 -- gb: glue, ga: kern
822 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
823 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
824 bd = getfield(bs, 'stretch')
825 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
826 bd = getfield(bs, 'shrink')
827 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
834 local function calc_ja_ja_glue()
835 local qm, pm = Nq.met, Np.met
836 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
837 return new_jfm_glue(qm, Nq.class, Np.class)
839 local npn, nqn = Np.nuc, Nq.nuc
840 local gb, db = new_jfm_glue(qm, Nq.class,
841 slow_find_char_class(ltjs_orig_char_table[npn],
843 local ga, da = new_jfm_glue(pm,
844 slow_find_char_class(ltjs_orig_char_table[nqn],
847 return calc_ja_ja_aux(gb, ga, db, da);
851 -------------------- 和欧文間空白量の決定
855 local get_xkanjiskip_normal, get_xkanjiskip_jfm
857 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
858 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
859 get_xkanjiskip_normal = function (Nn)
860 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
861 return node_copy(xkanji_skip)
863 local g = node_copy(zero_glue)
864 set_attr(g, attr_icflag, XKANJI_SKIP)
868 get_xkanjiskip_jfm = function (Nn)
870 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
871 g = node_new(id_glue)
872 local gx = node_new(id_glue_spec);
873 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
874 local bk = Nn.met.xkanjiskip or {0, 0, 0}
875 setfield(gx, 'width', bk[1])
876 setfield(gx, 'stretch', bk[2])
877 setfield(gx, 'shrink', bk[3])
878 setfield(g, 'spec', gx)
880 g = node_copy(zero_glue)
882 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
887 -------------------- 隣接した「塊」間の処理
889 local function get_OA_skip()
891 return new_jfm_glue(pm,
892 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
894 local function get_OB_skip()
896 return new_jfm_glue(qm, Nq.class,
897 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
900 -- (anything) .. jachar
901 local function handle_np_jachar(mode)
903 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
904 local g = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
905 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
906 elseif Nq.met then -- qid==id_hlist
907 local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
908 handle_penalty_normal(0, Np.pre, g); real_insert(g)
910 local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
911 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
913 local g = non_ihb_flag and get_OA_skip() -- O_A
914 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
915 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
916 else handle_penalty_always(0, Np.pre, g)
920 if mode and Np.kcat%2~=1 then
921 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
926 -- jachar .. (anything)
927 local function handle_nq_jachar()
929 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
930 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
932 local g =non_ihb_flag and get_OB_skip() -- O_B
933 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
934 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
935 else handle_penalty_always(Nq.post, 0, g)
941 -- (anything) .. (和文文字で始まる hlist)
942 local function handle_np_ja_hlist()
944 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
945 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
946 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
947 elseif Nq.met then -- Nq.id==id_hlist
948 local g = get_kanjiskip() -- K
949 handle_penalty_suppress(0, 0, g); real_insert(g)
951 local g = get_xkanjiskip(Np) -- X
952 handle_penalty_suppress(0, 0, g); real_insert(g)
956 -- (和文文字で終わる hlist) .. (anything)
957 local function handle_nq_ja_hlist()
959 local g = get_xkanjiskip(Nq) -- X
960 handle_penalty_suppress(0, 0, g); real_insert(g)
965 -- Nq が前側のクラスタとなることによる修正
967 local adjust_nq_aux = {
968 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
969 [id_hlist] = function() after_hlist(Nq) end,
970 [id_pbox] = function() after_hlist(Nq) end,
971 [id_disc] = function() after_hlist(Nq) end,
972 [id_pbox_w] = function()
973 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
979 local x = adjust_nq_aux[Nq.id]
985 -------------------- 開始・終了時の処理
989 local JWP = luatexja.stack_table_index.JWP
990 local function handle_list_tail(mode)
993 -- the current list is to be line-breaked.
994 -- Insert \jcharwidowpenalty
995 Bp = widow_Bp; Np = widow_Np
997 handle_penalty_normal(0,
998 table_current_stack[JWP] or 0)
1001 -- the current list is the contents of a hbox
1002 local npi, pm = Np.id, Np.met
1003 if npi == id_jglyph or (npi==id_pbox and pm) then
1004 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
1006 set_attr(g, attr_icflag, BOXBDD)
1007 head = insert_after(head, Np.last, g)
1014 local function handle_list_head(par_indented)
1015 local npi, pm = Np.id, Np.met
1016 if npi == id_jglyph or (npi==id_pbox and pm) then
1017 if non_ihb_flag then
1018 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1020 set_attr(g, attr_icflag, BOXBDD)
1021 if getid(g)==id_glue and #Bp==0 then
1022 local h = node_new(id_penalty)
1023 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1025 head = insert_before(head, Np.first, g)
1032 -- return value: (the initial cursor lp), (last node)
1035 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1036 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1037 local KSK = luatexja.stack_table_index.KSK
1038 local XSK = luatexja.stack_table_index.XSK
1039 local dir_yoko = luatexja.dir_table.dir_yoko
1040 local dir_tate = luatexja.dir_table.dir_tate
1041 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1042 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1043 init_var = function (mode,dir)
1044 -- 1073741823: max_dimen
1045 Bp, widow_Bp, widow_Np = {}, {}, {first = nil}
1046 table_current_stack = ltjs.table_current_stack
1048 list_dir = ltjs.list_dir or dir_yoko
1049 local is_dir_tate = list_dir==dir_tate
1050 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1051 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1052 set_np_xspc_jachar = is_dir_tate and set_np_xspc_jachar_tate or set_np_xspc_jachar_yoko
1055 tex_dir = dir or 'TLT'
1056 kanji_skip = node_new(id_glue)
1057 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1058 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
1059 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1060 and get_kanjiskip_jfm or get_kanjiskip_normal
1062 xkanji_skip = node_new(id_glue)
1063 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1064 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
1065 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1066 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1069 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1070 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1071 post=nil, pre=nil, xspc=nil,
1074 auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1075 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1076 post=nil, pre=nil, xspc=nil,
1079 -- the current list is to be line-breaked:
1080 -- hbox from \parindent is skipped.
1081 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1082 while lp and ((lpi==id_whatsit and lps~=sid_user)
1083 or ((lpi==id_hlist) and (lps==3))) do
1084 if (lpi==id_hlist) and (lps==3) then
1085 Np.char, par_indented = 'parbdd', 'parbdd'
1086 Np.width = getfield(lp, 'width')
1088 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1089 return lp, node_tail(head), par_indented
1091 return head, nil, 'boxbdd'
1096 local tex_set_attr = tex.setattribute
1097 local function cleanup(mode)
1098 -- adjust attr_icflag for avoiding error
1099 tex_set_attr('global', attr_icflag, 0)
1100 node_free(kanji_skip); node_free(xkanji_skip)
1102 local h = node_next(head)
1103 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1105 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1112 -------------------- 外部から呼ばれる関数
1115 function main(ahead, mode, dir)
1116 if not ahead then return ahead end
1118 local lp, last, par_indented = init_var(mode,dir)
1119 lp = calc_np(lp, last)
1121 handle_list_head(par_indented)
1123 return cleanup(mode)
1125 lp = calc_np(lp, last)
1128 local pid, pm = Np.id, Np.met
1130 if pid == id_jglyph then
1131 handle_np_jachar(mode)
1133 if pid==id_hlist then handle_np_ja_hlist()
1134 else handle_np_jachar() end
1136 if Nq.id==id_hlist then handle_nq_ja_hlist()
1137 else handle_nq_jachar() end
1139 lp = calc_np(lp, last)
1141 handle_list_tail(mode)
1142 return cleanup(mode)
1147 local IHB = luatexja.userid_table.IHB
1148 local BPAR = luatexja.userid_table.BPAR
1149 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1150 local node_write = Dnode.write
1153 function create_inhibitglue_node()
1154 local tn = node_new(id_whatsit, sid_user)
1155 setfield(tn, 'user_id', IHB)
1156 setfield(tn, 'type', 100)
1157 setfield(tn, 'value', 1)
1161 -- Node for indicating beginning of a paragraph
1162 -- (for ltjsclasses)
1163 function create_beginpar_node()
1164 local tn = node_new(id_whatsit, sid_user)
1165 setfield(tn, 'user_id', BPAR)
1166 setfield(tn, 'type', 100)
1167 setfield(tn, 'value', 1)
1171 local function whatsit_callback(Np, lp, Nq)
1172 if Np and Np.nuc then return Np
1173 elseif Np and getfield(lp, 'user_id') == BPAR then
1174 Np.first = lp; Np.nuc = lp; Np.last = lp
1177 Np.pre = 0; Np.post = 0
1179 Np.auto_xspc = false
1184 local function whatsit_after_callback(s, Nq, Np)
1185 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1186 local x, y = node_prev(Nq.nuc), Nq.nuc
1187 Nq.first, Nq.nuc, Nq.last = x, x, x
1188 head = node_remove(head, y)
1194 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1195 "luatexja.beginpar.np_info", 1)
1196 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1197 "luatexja.beginpar.np_info_after", 1)