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 PROCESSED = luatexja.icflag_table.PROCESSED
80 local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED
81 local BOXBDD = luatexja.icflag_table.BOXBDD
82 local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
84 local attr_icflag = luatexbase.attributes['ltj@icflag']
85 local kanji_skip = node_new(id_glue)
86 local xkanji_skip = node_new(id_glue)
88 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
89 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
90 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
91 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
94 local table_current_stack
99 local set_np_xspc_jachar
100 local set_np_xspc_jachar_hbox
102 local ltjs_orig_char_table = ltjs.orig_char_table
104 local function get_attr_icflag(p)
105 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
108 -------------------- Helper functions
110 -- This function is called only for acquiring `special' characters.
111 local function fast_find_char_class(c,m)
112 return m.chars[c] or 0
116 local slow_find_char_class
118 local start_time_measure = ltjb.start_time_measure
119 local stop_time_measure = ltjb.stop_time_measure
120 slow_find_char_class = function (c, m, oc)
121 local cls = ltjf_find_char_class(oc, m)
122 if oc~=c and c and cls==0 then
123 return ltjf_find_char_class(c, m)
130 local zero_glue = node_new(id_glue)
131 spec_zero_glue = to_node(node_new(id_glue_spec))
132 -- must be public, since mentioned from other sources
133 local spec_zero_glue = to_direct(spec_zero_glue)
134 setfield(spec_zero_glue, 'width', 0)
135 setfield(spec_zero_glue, 'stretch', 0)
136 setfield(spec_zero_glue, 'shrink', 0)
137 setfield(spec_zero_glue, 'stretch_order', 0)
138 setfield(spec_zero_glue, 'shrink_order', 0)
139 setfield(zero_glue, 'spec', spec_zero_glue)
141 local function skip_table_to_spec(n)
142 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
143 setfield(g, 'width', st.width)
144 setfield(g, 'stretch', st.stretch)
145 setfield(g, 'shrink', st.shrink)
146 setfield(g, 'stretch_order', st.stretch_order)
147 setfield(g, 'shrink_order', st.shrink_order)
153 local function add_penalty(p,e)
154 local pp = getfield(p, 'penalty')
156 if e<=-10000 then setfield(p, 'penalty', 0) end
157 elseif pp<=-10000 then
158 if e>=10000 then setfield(p, 'penalty', 0) end
161 if pp>=10000 then setfield(p, 'penalty', 10000)
162 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
163 else setfield(p, 'penalty', pp) end
168 diffmet_rule = math.two_paverage
169 function math.two_add(a,b) return a+b end
170 function math.two_average(a,b) return (a+b)*0.5 end
171 function math.two_paverage(a,b) return (a+b)/2 end
172 function math.two_pleft(a,b) return a end
173 function math.two_pright(a,b) return b end
175 local head -- the head of current list
178 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
180 local non_ihb_flag -- JFM グルー挿入抑止用 flag
181 -- false: \inhibitglue 指定時 true: それ以外
183 -------------------- hlist 内の文字の検索
185 local first_char, last_char, find_first_char
187 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
188 local function check_box(box_ptr, box_end)
189 local p = box_ptr; local found_visible_node = false
191 find_first_char = false; last_char = nil
194 while p and p~=box_end do
196 if pid==id_kern and getsubtype(p)==2 then
197 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
199 if pid==id_glyph then
201 if find_first_char then
202 first_char = p; find_first_char = false
204 last_char = p; found_visible_node = true; p=node_next(p)
205 if (not p) or p==box_end then
206 return found_visible_node
208 until getid(p)~=id_glyph
209 pid = getid(p) -- p must be non-nil
212 local pa = get_attr_icflag(p)
213 if pa==IC_PROCESSED then
215 elseif getsubtype(p)==2 then
216 p = node_next(node_next(p));
217 -- Note that another node_next will be executed outside this if-statement.
219 found_visible_node = true
220 find_first_char = false; last_char = nil
222 elseif pid==id_hlist then
223 if PACKED == get_attr_icflag(p) then
224 local s = ltjd_glyph_from_packed(p)
225 if find_first_char then
226 first_char = s; find_first_char = false
228 last_char = s; found_visible_node = true
230 if getfield(p, 'shift')==0 then
231 if check_box(getlist(p), nil) then found_visible_node = true end
233 find_first_char = false; last_char = nil
236 elseif pid==id_math then
237 if find_first_char then
238 first_char = p; find_first_char = false
240 last_char = p; found_visible_node = true
241 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
243 elseif not (pid==id_ins or pid==id_mark
244 or pid==id_adjust or pid==id_whatsit
245 or pid==id_penalty) then
246 found_visible_node = true
247 find_first_char = false; last_char = nil
251 return found_visible_node
254 function check_box_high(Nx, box_ptr, box_end)
255 first_char = nil; last_char = nil; find_first_char = true
256 if check_box(box_ptr, box_end) then
257 local first_char = first_char
259 if getid(first_char)==id_glyph then
260 if getfield(first_char, 'lang') == lang_ja then
261 set_np_xspc_jachar_hbox(Nx, first_char)
263 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
266 set_np_xspc_alchar(Nx, -1,first_char)
273 -------------------- Np の計算と情報取得
275 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
276 function (Np, lp, Nq)
277 if Np.nuc then return Np
279 return Np -- your code
282 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
283 function (stat, Nq, Np) return false end)
289 local traverse = Dnode.traverse
290 local function set_attr_icflag_processed(p)
291 if get_attr_icflag(p)<= ITALIC then
292 set_attr(p, attr_icflag, PROCESSED)
296 local function check_next_ickern(lp)
297 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
298 set_attr(lp, attr_icflag, IC_PROCESSED)
299 Np.last = lp; return node_next(lp)
301 Np.last = Np.nuc; return lp
305 local function calc_np_pbox(lp, last)
306 local first, lpa, nc = (not Np.first), KINSOKU, nil
307 Np.first = Np.first or lp; Np.id = id_pbox
308 set_attr(lp, attr_icflag, get_attr_icflag(lp));
309 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
310 if getid(lp)==id_hlist or getid(lp)==id_vlist then
311 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
312 Np.first = first and nc or Np.first
314 nc, lp = lp, node_next(lp)
316 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
317 -- get_attr_icflag() ではいけない!
320 lp = check_next_ickern(lp)
321 Np.last_char = check_box_high(Np, Np.first, lp)
325 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
326 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
327 local min, max = math.min, math.max
328 local function calc_np_aux_glyph_common(lp)
330 Np.first= (Np.first or lp)
331 if getfield(lp, 'lang') == lang_ja then
333 local m, cls = set_np_xspc_jachar(Np, lp)
335 lp, head, npi, npf = capsule_glyph(lp, m, cls, head, tex_dir, lp)
336 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
338 return true, check_next_ickern(lp);
341 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
343 local first_glyph, last_glyph = lp
344 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
345 local y_adjust = has_attr(lp,attr_ablshift) or 0
346 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
347 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
348 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
350 for lx in traverse(lp) do
351 local lai = get_attr_icflag(lx)
352 if lx==last or lai>=PACKED then
355 local lid = getid(lx)
356 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
358 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
359 y_adjust = has_attr(lx,attr_ablshift) or 0
360 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
361 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
362 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
363 elseif lid==id_kern then
364 local ls = getsubtype(lx)
365 if ls==2 then -- アクセント用の kern
366 set_attr(lx, attr_icflag, PROCESSED)
367 lx = node_next(lx) -- lp: アクセント本体
368 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
369 lx = node_next(node_next(lx))
372 elseif (ls==1 and lai==ITALIC) then
373 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
383 if adj_depth>node_depth then
384 r = node_new(id_rule)
385 setfield(r, 'width', 0); setfield(r, 'height', 0)
386 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
387 set_attr(r, attr_icflag, PROCESSED)
390 Np.last_char = last_glyph
391 if r then insert_after(head, first_glyph, r) end
396 local nf, nc = getfont(npn), getchar(npn)
397 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
398 if (ct.left_protruding or 0) == 0 then
399 head = insert_before(head, npn, r)
400 Np.first = (Np.first==npn) and r or npn
401 elseif (ct.right_protruding or 0) == 0 then
402 insert_after(head, npn, r); Np.last, lp = r, r
404 ltjb.package_warning_no_line(
406 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
407 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
408 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
416 local calc_np_auxtable = {
417 [id_glyph] = calc_np_aux_glyph_common,
418 [id_hlist] = function(lp)
420 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
421 set_attr(op, attr_icflag, PROCESSED)
422 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
423 if (flag or getfield(op, 'shift')~=0) then
427 Np.last_char = check_box_high(Np, getlist(op), nil)
431 [id_vlist] = function(lp)
433 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
434 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
438 box_like = function(lp)
439 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
441 return true, node_next(lp)
444 set_attr(lp, attr_icflag, PROCESSED)
445 return false, node_next(lp)
447 [id_whatsit] = function(lp)
448 local lps = getsubtype(lp)
449 if lps==sid_user then
450 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
451 local lq = node_next(lp);
452 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
455 set_attr(lp, attr_icflag, PROCESSED)
456 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
459 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
460 return true, node_next(lp)
462 return false, node_next(lp)
466 -- we do special treatment for these whatsit nodes.
467 if lps == sid_start_link or lps == sid_start_thread then
469 elseif lps == sid_end_link or lps == sid_end_thread then
470 Np.first, Nq.last = nil, lp;
472 set_attr(lp, attr_icflag, PROCESSED)
473 return false, node_next(lp)
476 [id_math] = function(lp)
477 Np.first, Np.nuc = (Np.first or lp), lp;
478 set_attr(lp, attr_icflag, PROCESSED)
479 set_np_xspc_alchar(Np, -1, lp)
480 local end_math = node_end_of_math(lp)
481 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
482 set_attr(end_math, attr_icflag, PROCESSED)
483 Np.last, Np.id = end_math, id_math;
484 return true, node_next(end_math);
486 [id_glue] = function(lp)
487 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
488 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
489 return true, node_next(lp)
491 [id_disc] = function(lp)
492 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
493 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
494 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
495 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
496 return true, node_next(lp)
498 [id_kern] = function(lp)
499 if getsubtype(lp)==2 then
500 Np.first = Np.first or lp
501 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
502 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
503 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
504 set_attr(lp, attr_icflag, PROCESSED);
505 return calc_np_aux_glyph_common(lp)
507 Np.first = Np.first or lp
508 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
509 Np.last = lp; return true, node_next(lp)
512 [id_penalty] = function(lp)
513 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
514 return false, node_next(lp)
517 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
518 calc_np_auxtable[13] = calc_np_auxtable.box_like
519 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
520 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
521 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
523 function calc_np(last, lp)
525 -- We assume lp = node_next(Np.last)
526 Np, Nq, non_ihb_flag = Nq, Np, true
527 -- We clear `predefined' entries of Np before pairs() loop,
528 -- because using only pairs() loop is slower.
529 Np.post, Np.pre, Np.xspc = nil, nil, nil
530 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
531 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
532 for k in pairs(Np) do Np[k] = nil end
534 for k = 1,#Bp do Bp[k] = nil end
536 local lpa = has_attr(lp, attr_icflag) or 0
539 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
540 local lq = node_next(lp)
541 head = node_remove(head, lp); node_free(lp); lp = lq
543 return calc_np_pbox(lp, last)
546 k, lp = calc_np_auxtable[getid(lp)](lp)
547 if k then return lp end
554 -- extract informations from Np
555 -- We think that "Np is a Japanese character" if Np.met~=nil,
556 -- "Np is an alphabetic character" if Np.pre~=nil,
557 -- "Np is not a character" otherwise.
558 after_hlist = nil -- global
559 local after_alchar, extract_np
561 local PRE = luatexja.stack_table_index.PRE
562 local POST = luatexja.stack_table_index.POST
563 local KCAT = luatexja.stack_table_index.KCAT
564 local XSP = luatexja.stack_table_index.XSP
565 local dir_tate = luatexja.dir_table.dir_tate
568 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
569 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
570 local attr_autospc = luatexbase.attributes['ltj@autospc']
571 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
572 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
573 function set_np_xspc_jachar(Nx, x)
574 local m = ltjf_font_metric_table[getfont(x)]
575 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
577 local cls = slow_find_char_class(c, m, c_glyph)
578 Nx.met, Nx.class, Nx.char = m, cls, c;
579 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
580 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
581 Nx.pre = table_current_stack[PRE + c] or 0
582 Nx.post = table_current_stack[POST + c] or 0
583 Nx.xspc = table_current_stack[XSP + c] or 3
584 Nx.kcat = table_current_stack[KCAT + c] or 0
585 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
588 function set_np_xspc_jachar_hbox(Nx, x)
589 local m = ltjf_font_metric_table[getfont(x)]
590 local c = has_attr(x, attr_jchar_code) or getchar(x)
591 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
592 Nx.pre = table_current_stack[PRE + c] or 0
593 Nx.post = table_current_stack[POST + c] or 0
594 Nx.xspc = table_current_stack[XSP + c] or 3
595 Nx.kcat = table_current_stack[KCAT + c] or 0
596 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
600 local floor = math.floor
601 function set_np_xspc_alchar(Nx, c,x, lig)
603 local f = (lig ==1) and nullfunc or node_tail
604 local xc, xs = getfield(x, 'components'), getsubtype(x)
605 while xc and xs and xs%4>=2 do
606 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
609 Nx.pre = table_current_stack[PRE + c] or 0
610 Nx.post = table_current_stack[POST + c] or 0
611 Nx.xspc = table_current_stack[XSP + c] or 3
613 Nx.pre, Nx.post = 0, 0
614 Nx.xspc = table_current_stack[XSP - 1] or 3
617 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
619 local set_np_xspc_alchar = set_np_xspc_alchar
621 -- change the information for the next loop
622 -- (will be done if Nx is an alphabetic character or a hlist)
623 after_hlist = function (Nx)
624 local s = Nx.last_char
626 if getid(s)==id_glyph then
627 if getfield(s, 'lang') == lang_ja then
628 set_np_xspc_jachar_hbox(Nx, s)
630 set_np_xspc_alchar(Nx, getchar(s), s, 2)
633 set_np_xspc_alchar(Nx, -1, s)
636 Nx.pre, Nx.met = nil, nil
640 after_alchar = function (Nx)
641 local x = Nx.last_char
642 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
647 -------------------- 最下層の処理
649 -- change penalties (or create a new penalty, if needed)
650 local pen_skel = node_new(id_penalty)
651 set_attr(pen_skel, attr_icflag, KINSOKU)
653 local function handle_penalty_normal(post, pre, g)
654 local a = (pre or 0) + (post or 0)
656 if (a~=0 and not(g and getid(g)==id_kern)) then
657 local p = node_copy(pen_skel)
658 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
659 setfield(p, 'penalty', a)
660 head = insert_before(head, Np.first, p)
663 else for _, v in pairs(Bp) do add_penalty(v,a) end
667 local function handle_penalty_always(post, pre, g)
668 local a = (pre or 0) + (post or 0)
670 if not (g and getid(g)==id_glue) or a~=0 then
671 local p = node_copy(pen_skel)
672 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
673 setfield(p, 'penalty', a)
674 head = insert_before(head, Np.first, p)
677 else for _, v in pairs(Bp) do add_penalty(v,a) end
681 local function handle_penalty_suppress(post, pre, g)
682 local a = (pre or 0) + (post or 0)
684 if g and getid(g)==id_glue then
685 local p = node_copy(pen_skel)
686 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
689 else for _, v in pairs(Bp) do add_penalty(v,a) end
693 -- 和文文字間の JFM glue を node 化
696 local FROM_JFM = luatexja.icflag_table.FROM_JFM
698 for i=FROM_JFM-2,FROM_JFM+2 do
699 glue_skel[i]= node_new(id_glue); set_attr(glue_skel[i], attr_icflag, i)
701 function new_jfm_glue(m, bc, ac)
702 -- bc, ac: char classes
703 local g = m.char_type[bc][ac]
706 local f = node_copy(glue_skel[g[4]])
707 setfield(f, 'spec', node_copy(g[2]))
710 return node_copy(g[2]), g[3]
717 -- Nq.last (kern w) .... (glue/kern g) Np.first
718 local function real_insert(g)
720 head = insert_before(head, Np.first, g)
726 -------------------- 和文文字間空白量の決定
727 local null_skip_table = {0, 0, 0}
730 local get_kanjiskip_normal, get_kanjiskip_jfm
732 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
733 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
734 get_kanjiskip_normal = function ()
735 if Np.auto_kspc or Nq.auto_kspc then
736 return node_copy(kanji_skip)
738 local g = node_copy(zero_glue)
739 set_attr(g, attr_icflag, KANJI_SKIP)
744 get_kanjiskip_jfm = function ()
746 if Np.auto_kspc or Nq.auto_kspc then
747 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
748 local gx = node_new(id_glue_spec);
749 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
750 local pm, qm = Np.met, Nq.met
751 local bk = qm.kanjiskip or null_skip_table
752 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
753 setfield(gx, 'width', bk[1])
754 setfield(gx, 'stretch', bk[2])
755 setfield(gx, 'shrink', bk[3])
757 local ak = pm.kanjiskip or null_skip_table
758 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
759 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
760 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
762 setfield(g, 'spec', gx)
764 g = node_copy(zero_glue)
766 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
773 local bg_ag = 2*id_glue - id_glue
774 local bg_ak = 2*id_glue - id_kern
775 local bk_ag = 2*id_kern - id_glue
776 local bk_ak = 2*id_kern - id_kern
778 calc_ja_ja_aux = function (gb,ga, db, da)
779 local rbb, rab = 0.5*(1-db), 0.5*(1-da) -- 「前の文字」由来のグルーの割合
780 local rba, raa = 0.5*(1+db), 0.5*(1+da) -- 「前の文字」由来のグルーの割合
781 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
782 and diffmet_rule ~= math.two_paverage then
783 rbb, rab, rba, raa = 1,0,0,1
787 gb = node_new(id_kern); setfield(gb, 'kern', 0)
790 ga = node_new(id_kern); setfield(ga, 'kern', 0)
793 local k = 2*getid(gb) - getid(ga)
795 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
797 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
798 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
799 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
800 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
801 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
802 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
805 elseif k == bk_ak then
807 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
808 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
811 elseif k == bk_ag then
812 local as = getfield(ga, 'spec')
813 -- gb: kern, ga: glue
814 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
815 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
816 ad = getfield(as, 'stretch')
817 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
818 ad = getfield(as, 'shrink')
819 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
823 local bs = getfield(gb, 'spec')
824 -- gb: glue, ga: kern
825 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
826 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
827 bd = getfield(bs, 'stretch')
828 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
829 bd = getfield(bs, 'shrink')
830 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
837 local function calc_ja_ja_glue()
838 local qm, pm = Nq.met, Np.met
839 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
840 return new_jfm_glue(qm, Nq.class, Np.class)
842 local npn, nqn = Np.nuc, Nq.nuc
843 local gb, db = new_jfm_glue(qm, Nq.class,
844 slow_find_char_class(Np.char,
846 local ga, da = new_jfm_glue(pm,
847 slow_find_char_class(Nq.char,
850 return calc_ja_ja_aux(gb, ga, db, da);
854 -------------------- 和欧文間空白量の決定
858 local get_xkanjiskip_normal, get_xkanjiskip_jfm
860 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
861 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
862 get_xkanjiskip_normal = function (Nn)
863 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
864 return node_copy(xkanji_skip)
866 local g = node_copy(zero_glue)
867 set_attr(g, attr_icflag, XKANJI_SKIP)
871 get_xkanjiskip_jfm = function (Nn)
873 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
874 g = node_new(id_glue)
875 local gx = node_new(id_glue_spec);
876 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
877 local bk = Nn.met.xkanjiskip or null_skip_table
878 setfield(gx, 'width', bk[1])
879 setfield(gx, 'stretch', bk[2])
880 setfield(gx, 'shrink', bk[3])
881 setfield(g, 'spec', gx)
883 g = node_copy(zero_glue)
885 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
890 -------------------- 隣接した「塊」間の処理
892 local function get_OA_skip()
894 return new_jfm_glue(pm,
895 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
897 local function get_OB_skip()
899 return new_jfm_glue(qm, Nq.class,
900 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
903 -- (anything) .. jachar
904 local function handle_np_jachar(mode)
906 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
907 local g = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
908 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
909 elseif Nq.met then -- qid==id_hlist
910 local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
911 handle_penalty_normal(0, Np.pre, g); real_insert(g)
913 local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
914 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
916 local g = non_ihb_flag and get_OA_skip() -- O_A
917 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
918 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
919 else handle_penalty_always(0, Np.pre, g)
923 if mode and Np.kcat%2~=1 then
924 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
929 -- jachar .. (anything)
930 local function handle_nq_jachar()
932 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
933 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
935 local g =non_ihb_flag and get_OB_skip() -- O_B
936 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
937 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
938 else handle_penalty_always(Nq.post, 0, g)
944 -- (anything) .. (和文文字で始まる hlist)
945 local function handle_np_ja_hlist()
947 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
948 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
949 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
950 elseif Nq.met then -- Nq.id==id_hlist
951 local g = get_kanjiskip() -- K
952 handle_penalty_suppress(0, 0, g); real_insert(g)
954 local g = get_xkanjiskip(Np) -- X
955 handle_penalty_suppress(0, 0, g); real_insert(g)
959 -- (和文文字で終わる hlist) .. (anything)
960 local function handle_nq_ja_hlist()
962 local g = get_xkanjiskip(Nq) -- X
963 handle_penalty_suppress(0, 0, g); real_insert(g)
968 -- Nq が前側のクラスタとなることによる修正
970 local adjust_nq_aux = {
971 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
972 [id_hlist] = function() after_hlist(Nq) end,
973 [id_pbox] = function() after_hlist(Nq) end,
974 [id_disc] = function() after_hlist(Nq) end,
975 [id_pbox_w] = function()
976 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
982 local x = adjust_nq_aux[Nq.id]
988 -------------------- 開始・終了時の処理
992 local JWP = luatexja.stack_table_index.JWP
993 local function handle_list_tail(mode)
996 -- the current list is to be line-breaked.
997 -- Insert \jcharwidowpenalty
998 Bp = widow_Bp; Np = widow_Np
1000 handle_penalty_normal(0,table_current_stack[JWP] or 0)
1003 -- the current list is the contents of a hbox
1004 local npi, pm = Np.id, Np.met
1005 if npi == id_jglyph or (npi==id_pbox and pm) then
1006 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
1008 set_attr(g, attr_icflag, BOXBDD)
1009 head = insert_after(head, Np.last, g)
1016 local function handle_list_head(par_indented)
1017 local npi, pm = Np.id, Np.met
1018 if npi == id_jglyph or (npi==id_pbox and pm) then
1019 if non_ihb_flag then
1020 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1022 set_attr(g, attr_icflag, BOXBDD)
1023 if getid(g)==id_glue and #Bp==0 then
1024 local h = node_new(id_penalty)
1025 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1027 head = insert_before(head, Np.first, g)
1034 -- return value: (the initial cursor lp), (last node)
1037 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1038 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1039 local KSK = luatexja.stack_table_index.KSK
1040 local XSK = luatexja.stack_table_index.XSK
1041 local dir_yoko = luatexja.dir_table.dir_yoko
1042 local dir_tate = luatexja.dir_table.dir_tate
1043 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1044 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1045 local table_pool = {
1046 {}, {}, {first=nil},
1047 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1048 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1049 post=nil, pre=nil, xspc=nil, },
1050 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1051 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1052 post=nil, pre=nil, xspc=nil, },
1054 init_var = function (mode,dir)
1055 -- 1073741823: max_dimen
1056 Bp, widow_Bp, widow_Np, Np, Nq
1057 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1058 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1059 table_current_stack = ltjs.table_current_stack
1061 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1062 local is_dir_tate = list_dir==dir_tate
1063 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1064 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1066 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1067 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1068 and get_kanjiskip_jfm or get_kanjiskip_normal
1070 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1071 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1072 and get_xkanjiskip_jfm or get_xkanjiskip_normal
1075 -- the current list is to be line-breaked:
1076 -- hbox from \parindent is skipped.
1077 local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
1078 while lp and ((lpi==id_whatsit and lps~=sid_user)
1079 or ((lpi==id_hlist) and (lps==3))) do
1080 if (lpi==id_hlist) and (lps==3) then
1081 Np.char, par_indented = 'parbdd', 'parbdd'
1082 Np.width = getfield(lp, 'width')
1084 lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
1085 return lp, node_tail(head), par_indented
1087 return head, nil, 'boxbdd'
1092 local tex_set_attr = tex.setattribute
1093 local function cleanup(mode)
1094 -- adjust attr_icflag for avoiding error
1095 if tex.getattribute(attr_icflag)~=0 then tex_set_attr('global', attr_icflag, 0) end
1096 node_free(getfield(kanji_skip, 'spec'))
1097 node_free(getfield(xkanji_skip, 'spec'))
1099 local h = node_next(head)
1100 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1102 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1109 -------------------- 外部から呼ばれる関数
1112 function main(ahead, mode, dir)
1113 if not ahead then return ahead end
1115 local lp, last, par_indented = init_var(mode,dir)
1116 lp = calc_np(last, lp)
1118 handle_list_head(par_indented)
1119 lp = calc_np(last,lp); while Np do
1121 local pid, pm = Np.id, Np.met
1123 if pid == id_jglyph then
1124 handle_np_jachar(mode)
1126 if pid==id_hlist then handle_np_ja_hlist()
1127 else handle_np_jachar() end
1129 if Nq.id==id_hlist then handle_nq_ja_hlist()
1130 else handle_nq_jachar() end
1132 lp = calc_np(last,lp)
1134 handle_list_tail(mode)
1136 return cleanup(mode)
1141 local IHB = luatexja.userid_table.IHB
1142 local BPAR = luatexja.userid_table.BPAR
1143 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1144 local node_write = Dnode.write
1147 function create_inhibitglue_node()
1148 local tn = node_new(id_whatsit, sid_user)
1149 setfield(tn, 'user_id', IHB)
1150 setfield(tn, 'type', 100)
1151 setfield(tn, 'value', 1)
1155 -- Node for indicating beginning of a paragraph
1156 -- (for ltjsclasses)
1157 function create_beginpar_node()
1158 local tn = node_new(id_whatsit, sid_user)
1159 setfield(tn, 'user_id', BPAR)
1160 setfield(tn, 'type', 100)
1161 setfield(tn, 'value', 1)
1165 local function whatsit_callback(Np, lp, Nq)
1166 if Np and Np.nuc then return Np
1167 elseif Np and getfield(lp, 'user_id') == BPAR then
1168 Np.first = lp; Np.nuc = lp; Np.last = lp
1173 local function whatsit_after_callback(s, Nq, Np)
1174 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1175 local x, y = node_prev(Nq.nuc), Nq.nuc
1176 Nq.first, Nq.nuc, Nq.last = x, x, x
1179 Nq.class = fast_find_char_class('parbdd', Np.met)
1181 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1182 Nq.auto_xspc = false
1184 head = node_remove(head, y)
1190 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1191 "luatexja.beginpar.np_info", 1)
1192 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1193 "luatexja.beginpar.np_info_after", 1)