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
85 local kanji_skip = node_new(id_glue)
86 local xkanji_skip = node_new(id_glue)
87 set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
88 set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
90 local table_current_stack
95 local set_np_xspc_jachar
96 local set_np_xspc_jachar_hbox
98 local attr_icflag = luatexbase.attributes['ltj@icflag']
99 local ltjs_orig_char_table = ltjs.orig_char_table
101 local function get_attr_icflag(p)
102 return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
105 -------------------- Helper functions
107 -- This function is called only for acquiring `special' characters.
108 local function fast_find_char_class(c,m)
109 return m.chars[c] or 0
113 local slow_find_char_class
115 local start_time_measure = ltjb.start_time_measure
116 local stop_time_measure = ltjb.stop_time_measure
117 slow_find_char_class = function (c, m, oc)
118 local cls = ltjf_find_char_class(oc, m)
119 if oc~=c and c and cls==0 then
120 return ltjf_find_char_class(c, m)
127 local zero_glue = node_new(id_glue)
128 spec_zero_glue = to_node(node_new(id_glue_spec))
129 -- must be public, since mentioned from other sources
130 local spec_zero_glue = to_direct(spec_zero_glue)
131 setfield(spec_zero_glue, 'width', 0)
132 setfield(spec_zero_glue, 'stretch', 0)
133 setfield(spec_zero_glue, 'shrink', 0)
134 setfield(spec_zero_glue, 'stretch_order', 0)
135 setfield(spec_zero_glue, 'shrink_order', 0)
136 setfield(zero_glue, 'spec', spec_zero_glue)
138 local function skip_table_to_spec(n)
139 local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
140 setfield(g, 'width', st.width)
141 setfield(g, 'stretch', st.stretch)
142 setfield(g, 'shrink', st.shrink)
143 setfield(g, 'stretch_order', st.stretch_order)
144 setfield(g, 'shrink_order', st.shrink_order)
150 local function add_penalty(p,e)
151 local pp = getfield(p, 'penalty')
153 if e<=-10000 then setfield(p, 'penalty', 0) end
154 elseif pp<=-10000 then
155 if e>=10000 then setfield(p, 'penalty', 0) end
158 if pp>=10000 then setfield(p, 'penalty', 10000)
159 elseif pp<=-10000 then setfield(p, 'penalty', -10000)
160 else setfield(p, 'penalty', pp) end
165 diffmet_rule = math.two_paverage
166 function math.two_add(a,b) return a+b end
167 function math.two_average(a,b) return (a+b)*0.5 end
168 function math.two_paverage(a,b) return (a+b)/2 end
169 function math.two_pleft(a,b) return a end
170 function math.two_pright(a,b) return b end
172 local head -- the head of current list
175 local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用
177 local non_ihb_flag -- JFM グルー挿入抑止用 flag
178 -- false: \inhibitglue 指定時 true: それ以外
180 -------------------- hlist 内の文字の検索
182 local first_char, last_char, find_first_char
184 local ltjd_glyph_from_packed = ltjd.glyph_from_packed
185 local function check_box(box_ptr, box_end)
186 local p = box_ptr; local found_visible_node = false
188 find_first_char = false; last_char = nil
191 while p and p~=box_end do
193 if pid==id_kern and getsubtype(p)==2 then
194 p = node_next(node_next(node_next(p))); pid = getid(p) -- p must be glyph_node
196 if pid==id_glyph then
198 if find_first_char then
199 first_char = p; find_first_char = false
201 last_char = p; found_visible_node = true; p=node_next(p)
202 if (not p) or p==box_end then
203 return found_visible_node
205 until getid(p)~=id_glyph
206 pid = getid(p) -- p must be non-nil
209 local pa = get_attr_icflag(p)
210 if pa==IC_PROCESSED then
212 elseif getsubtype(p)==2 then
213 p = node_next(node_next(p));
214 -- Note that another node_next will be executed outside this if-statement.
216 found_visible_node = true
217 find_first_char = false; last_char = nil
219 elseif pid==id_hlist then
220 if PACKED == get_attr_icflag(p) then
221 local s = ltjd_glyph_from_packed(p)
222 if find_first_char then
223 first_char = s; find_first_char = false
225 last_char = s; found_visible_node = true
227 if getfield(p, 'shift')==0 then
228 if check_box(getlist(p), nil) then found_visible_node = true end
230 find_first_char = false; last_char = nil
233 elseif pid==id_math then
234 if find_first_char then
235 first_char = p; find_first_char = false
237 last_char = p; found_visible_node = true
238 elseif pid==id_rule and get_attr_icflag(p)==PACKED then
240 elseif not (pid==id_ins or pid==id_mark
241 or pid==id_adjust or pid==id_whatsit
242 or pid==id_penalty) then
243 found_visible_node = true
244 find_first_char = false; last_char = nil
248 return found_visible_node
251 function check_box_high(Nx, box_ptr, box_end)
252 first_char = nil; last_char = nil; find_first_char = true
253 if check_box(box_ptr, box_end) then
254 local first_char = first_char
256 if getid(first_char)==id_glyph then
257 if getfield(first_char, 'lang') == lang_ja then
258 set_np_xspc_jachar_hbox(Nx, first_char)
260 set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
263 set_np_xspc_alchar(Nx, -1,first_char)
270 -------------------- Np の計算と情報取得
272 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data",
273 function (Np, lp, Nq)
274 if Np.nuc then return Np
276 return Np -- your code
279 luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data",
280 function (stat, Nq, Np) return false end)
286 local traverse = Dnode.traverse
287 local function set_attr_icflag_processed(p)
288 if get_attr_icflag(p)<= ITALIC then
289 set_attr(p, attr_icflag, PROCESSED)
293 local function check_next_ickern(lp)
294 if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
295 set_attr(lp, attr_icflag, IC_PROCESSED)
296 Np.last = lp; return node_next(lp)
298 Np.last = Np.nuc; return lp
302 local function calc_np_pbox(lp, last)
303 local first, lpa, nc = (not Np.first), KINSOKU, nil
304 Np.first = Np.first or lp; Np.id = id_pbox
305 set_attr(lp, attr_icflag, get_attr_icflag(lp));
306 while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
307 if getid(lp)==id_hlist or getid(lp)==id_vlist then
308 head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
309 Np.first = first and nc or Np.first
311 nc, lp = lp, node_next(lp)
313 first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
314 -- get_attr_icflag() ではいけない!
317 lp = check_next_ickern(lp)
318 Np.last_char = check_box_high(Np, Np.first, lp)
322 local ltjw_apply_ashift_math = ltjw.apply_ashift_math
323 local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
324 local min, max = math.min, math.max
325 local function calc_np_aux_glyph_common(lp)
327 Np.first= (Np.first or lp)
328 if getfield(lp, 'lang') == lang_ja then
330 local m, cls = set_np_xspc_jachar(Np, lp)
332 lp, head, npi, npf = capsule_glyph(lp, m, cls, head, tex_dir, lp)
333 Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
335 return true, check_next_ickern(lp);
338 set_np_xspc_alchar(Np, getchar(lp), lp, 1)
340 local first_glyph, last_glyph = lp
341 set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
342 local y_adjust = has_attr(lp,attr_ablshift) or 0
343 local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
344 local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
345 setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
347 for lx in traverse(lp) do
348 local lai = get_attr_icflag(lx)
349 if lx==last or lai>=PACKED then
352 local lid = getid(lx)
353 if lid==id_glyph and getfield(lx, 'lang') ~= lang_ja then
355 last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
356 y_adjust = has_attr(lx,attr_ablshift) or 0
357 node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
358 adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
359 setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
360 elseif lid==id_kern then
361 local ls = getsubtype(lx)
362 if ls==2 then -- アクセント用の kern
363 set_attr(lx, attr_icflag, PROCESSED)
364 lx = node_next(lx) -- lp: アクセント本体
365 setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
366 lx = node_next(node_next(lx))
369 elseif (ls==1 and lai==ITALIC) then
370 Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
380 if adj_depth>node_depth then
381 r = node_new(id_rule)
382 setfield(r, 'width', 0); setfield(r, 'height', 0)
383 setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
384 set_attr(r, attr_icflag, PROCESSED)
387 Np.last_char = last_glyph
388 if r then insert_after(head, first_glyph, r) end
393 local nf, nc = getfont(npn), getchar(npn)
394 local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
395 if (ct.left_protruding or 0) == 0 then
396 head = insert_before(head, npn, r)
397 Np.first = (Np.first==npn) and r or npn
398 elseif (ct.right_protruding or 0) == 0 then
399 insert_after(head, npn, r); Np.last, lp = r, r
401 ltjb.package_warning_no_line(
403 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
404 .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
405 .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
413 local calc_np_auxtable = {
414 [id_glyph] = calc_np_aux_glyph_common,
415 [id_hlist] = function(lp)
417 head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
418 set_attr(op, attr_icflag, PROCESSED)
419 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
420 if (flag or getfield(op, 'shift')~=0) then
424 Np.last_char = check_box_high(Np, getlist(op), nil)
428 [id_vlist] = function(lp)
430 head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
431 Np.first = Np.first or op; Np.last = op; Np.nuc = op;
435 box_like = function(lp)
436 Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
438 return true, node_next(lp)
441 set_attr(lp, attr_icflag, PROCESSED)
442 return false, node_next(lp)
444 [id_whatsit] = function(lp)
445 local lps = getsubtype(lp)
446 if lps==sid_user then
447 if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
448 local lq = node_next(lp);
449 head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
452 set_attr(lp, attr_icflag, PROCESSED)
453 luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
456 Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
457 return true, node_next(lp)
459 return false, node_next(lp)
463 -- we do special treatment for these whatsit nodes.
464 if lps == sid_start_link or lps == sid_start_thread then
466 elseif lps == sid_end_link or lps == sid_end_thread then
467 Np.first, Nq.last = nil, lp;
469 set_attr(lp, attr_icflag, PROCESSED)
470 return false, node_next(lp)
473 [id_math] = function(lp)
474 Np.first, Np.nuc = (Np.first or lp), lp;
475 set_attr(lp, attr_icflag, PROCESSED)
476 set_np_xspc_alchar(Np, -1, lp)
477 local end_math = node_end_of_math(lp)
478 ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
479 set_attr(end_math, attr_icflag, PROCESSED)
480 Np.last, Np.id = end_math, id_math;
481 return true, node_next(end_math);
483 [id_glue] = 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 return true, node_next(lp)
488 [id_disc] = function(lp)
489 Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
490 Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
491 ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
492 Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
493 return true, node_next(lp)
495 [id_kern] = function(lp)
496 if getsubtype(lp)==2 then
497 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
498 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
499 set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
500 set_attr(lp, attr_icflag, PROCESSED);
501 return calc_np_aux_glyph_common(lp)
503 Np.first = Np.first or lp
504 Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
505 Np.last = lp; return true, node_next(lp)
508 [id_penalty] = function(lp)
509 Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
510 return false, node_next(lp)
513 calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
514 calc_np_auxtable[13] = calc_np_auxtable.box_like
515 calc_np_auxtable[id_ins] = calc_np_auxtable.skip
516 calc_np_auxtable[id_mark] = calc_np_auxtable.skip
517 calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
519 function calc_np(last, lp)
521 -- We assume lp = node_next(Np.last)
522 Np, Nq, non_ihb_flag = Nq, Np, true
523 -- We clear `predefined' entries of Np before pairs() loop,
524 -- because using only pairs() loop is slower.
525 Np.post, Np.pre, Np.xspc = nil, nil, nil
526 Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
527 Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
528 for k in pairs(Np) do Np[k] = nil end
530 for k = 1,#Bp do Bp[k] = nil end
532 local lpa = has_attr(lp, attr_icflag) or 0
535 if lpa%PROCESSED_BEGIN_FLAG == BOXBDD then
536 local lq = node_next(lp)
537 head = node_remove(head, lp); node_free(lp); lp = lq
539 return calc_np_pbox(lp, last)
542 k, lp = calc_np_auxtable[getid(lp)](lp)
543 if k then return lp end
550 -- extract informations from Np
551 -- We think that "Np is a Japanese character" if Np.met~=nil,
552 -- "Np is an alphabetic character" if Np.pre~=nil,
553 -- "Np is not a character" otherwise.
554 after_hlist = nil -- global
555 local after_alchar, extract_np
557 local PRE = luatexja.stack_table_index.PRE
558 local POST = luatexja.stack_table_index.POST
559 local KCAT = luatexja.stack_table_index.KCAT
560 local XSP = luatexja.stack_table_index.XSP
561 local dir_tate = luatexja.dir_table.dir_tate
564 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
565 local attr_jchar_code = luatexbase.attributes['ltj@charcode']
566 local attr_autospc = luatexbase.attributes['ltj@autospc']
567 local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
568 --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
569 function set_np_xspc_jachar(Nx, x)
570 local m = ltjf_font_metric_table[getfont(x)]
571 local c, c_glyph = ltjs_orig_char_table[x], getchar(x)
573 local cls = slow_find_char_class(c, m, c_glyph)
574 Nx.met, Nx.class, Nx.char = m, cls, c;
575 if cls~=0 then set_attr(x, attr_jchar_class, cls) end
576 if c~=c_glyph then set_attr(x, attr_jchar_code, c) end
577 Nx.pre = table_current_stack[PRE + c] or 0
578 Nx.post = table_current_stack[POST + c] or 0
579 Nx.xspc = table_current_stack[XSP + c] or 3
580 Nx.kcat = table_current_stack[KCAT + c] or 0
581 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
584 function set_np_xspc_jachar_hbox(Nx, x)
585 local m = ltjf_font_metric_table[getfont(x)]
586 local c = has_attr(x, attr_jchar_code) or getchar(x)
587 Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
588 Nx.pre = table_current_stack[PRE + c] or 0
589 Nx.post = table_current_stack[POST + c] or 0
590 Nx.xspc = table_current_stack[XSP + c] or 3
591 Nx.kcat = table_current_stack[KCAT + c] or 0
592 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1)
596 local floor = math.floor
597 function set_np_xspc_alchar(Nx, c,x, lig)
599 local f = (lig ==1) and nullfunc or node_tail
600 local xc, xs = getfield(x, 'components'), getsubtype(x)
601 while xc and xs and xs%4>=2 do
602 x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
605 Nx.pre = table_current_stack[PRE + c] or 0
606 Nx.post = table_current_stack[POST + c] or 0
607 Nx.xspc = table_current_stack[XSP + c] or 3
609 Nx.pre, Nx.post = 0, 0
610 Nx.xspc = table_current_stack[XSP - 1] or 3
613 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
615 local set_np_xspc_alchar = set_np_xspc_alchar
617 -- change the information for the next loop
618 -- (will be done if Nx is an alphabetic character or a hlist)
619 after_hlist = function (Nx)
620 local s = Nx.last_char
622 if getid(s)==id_glyph then
623 if getfield(s, 'lang') == lang_ja then
624 set_np_xspc_jachar_hbox(Nx, s)
626 set_np_xspc_alchar(Nx, getchar(s), s, 2)
629 set_np_xspc_alchar(Nx, -1, s)
632 Nx.pre, Nx.met = nil, nil
636 after_alchar = function (Nx)
637 local x = Nx.last_char
638 return set_np_xspc_alchar(Nx, getchar(x), x, 2)
643 -------------------- 最下層の処理
645 -- change penalties (or create a new penalty, if needed)
646 local function handle_penalty_normal(post, pre, g)
647 local a = (pre or 0) + (post or 0)
649 if (a~=0 and not(g and getid(g)==id_kern)) then
650 local p = node_new(id_penalty)
651 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
652 setfield(p, 'penalty', a)
653 head = insert_before(head, Np.first, p)
655 set_attr(p, attr_icflag, KINSOKU)
657 else for _, v in pairs(Bp) do add_penalty(v,a) end
661 local function handle_penalty_always(post, pre, g)
662 local a = (pre or 0) + (post or 0)
664 if not (g and getid(g)==id_glue) or a~=0 then
665 local p = node_new(id_penalty)
666 if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
667 setfield(p, 'penalty', a)
668 head = insert_before(head, Np.first, p)
670 set_attr(p, attr_icflag, KINSOKU)
672 else for _, v in pairs(Bp) do add_penalty(v,a) end
676 local function handle_penalty_suppress(post, pre, g)
677 local a = (pre or 0) + (post or 0)
679 if g and getid(g)==id_glue then
680 local p = node_new(id_penalty)
681 setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
683 set_attr(p, attr_icflag, KINSOKU)
685 else for _, v in pairs(Bp) do add_penalty(v,a) end
689 -- 和文文字間の JFM glue を node 化
690 local function new_jfm_glue(m, bc, ac)
691 -- bc, ac: char classes
692 local g, d = m.char_type[bc][ac], 0
695 n,d = node_copy(g[2]), g[3]
697 local f = node_new(id_glue)
698 set_attr(f, attr_icflag, g[4])
699 setfield(f, 'spec', n)
706 -- Nq.last (kern w) .... (glue/kern g) Np.first
707 local function real_insert(g)
709 head = insert_before(head, Np.first, g)
715 -------------------- 和文文字間空白量の決定
716 local null_skip_table = {0, 0, 0}
719 local get_kanjiskip_normal, get_kanjiskip_jfm
721 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
722 local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
723 get_kanjiskip_normal = function ()
724 if Np.auto_kspc or Nq.auto_kspc then
725 return node_copy(kanji_skip)
727 local g = node_copy(zero_glue)
728 set_attr(g, attr_icflag, KANJI_SKIP)
733 get_kanjiskip_jfm = function ()
735 if Np.auto_kspc or Nq.auto_kspc then
736 g = node_new(id_glue); --copy_attr(g, Nq.nuc)
737 local gx = node_new(id_glue_spec);
738 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
739 local pm, qm = Np.met, Nq.met
740 local bk = qm.kanjiskip or null_skip_table
741 if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
742 setfield(gx, 'width', bk[1])
743 setfield(gx, 'stretch', bk[2])
744 setfield(gx, 'shrink', bk[3])
746 local ak = pm.kanjiskip or null_skip_table
747 setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
748 setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
749 setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
751 setfield(g, 'spec', gx)
753 g = node_copy(zero_glue)
755 set_attr(g, attr_icflag, KANJI_SKIP_JFM)
762 local bg_ag = 2*id_glue - id_glue
763 local bg_ak = 2*id_glue - id_kern
764 local bk_ag = 2*id_kern - id_glue
765 local bk_ak = 2*id_kern - id_kern
767 calc_ja_ja_aux = function (gb,ga, db, da)
768 local rbb, rab = 0.5*(1-db), 0.5*(1-da) -- 「前の文字」由来のグルーの割合
769 local rba, raa = 0.5*(1+db), 0.5*(1+da) -- 「前の文字」由来のグルーの割合
770 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
771 and diffmet_rule ~= math.two_paverage then
772 rbb, rab, rba, raa = 1,0,0,1
776 gb = node_new(id_kern); setfield(gb, 'kern', 0)
779 ga = node_new(id_kern); setfield(ga, 'kern', 0)
782 local k = 2*getid(gb) - getid(ga)
784 local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
786 local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
787 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
788 bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
789 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
790 bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
791 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
794 elseif k == bk_ak then
796 local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
797 setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
800 elseif k == bk_ag then
801 local as = getfield(ga, 'spec')
802 -- gb: kern, ga: glue
803 local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
804 setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
805 ad = getfield(as, 'stretch')
806 setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
807 ad = getfield(as, 'shrink')
808 setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
812 local bs = getfield(gb, 'spec')
813 -- gb: glue, ga: kern
814 local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
815 setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
816 bd = getfield(bs, 'stretch')
817 setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
818 bd = getfield(bs, 'shrink')
819 setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
826 local function calc_ja_ja_glue()
827 local qm, pm = Nq.met, Np.met
828 if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
829 return new_jfm_glue(qm, Nq.class, Np.class)
831 local npn, nqn = Np.nuc, Nq.nuc
832 local gb, db = new_jfm_glue(qm, Nq.class,
833 slow_find_char_class(Np.char,
835 local ga, da = new_jfm_glue(pm,
836 slow_find_char_class(Nq.char,
839 return calc_ja_ja_aux(gb, ga, db, da);
843 -------------------- 和欧文間空白量の決定
847 local get_xkanjiskip_normal, get_xkanjiskip_jfm
849 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
850 local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
851 get_xkanjiskip_normal = function (Nn)
852 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
853 return node_copy(xkanji_skip)
855 local g = node_copy(zero_glue)
856 set_attr(g, attr_icflag, XKANJI_SKIP)
860 get_xkanjiskip_jfm = function (Nn)
862 if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
863 g = node_new(id_glue)
864 local gx = node_new(id_glue_spec);
865 setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
866 local bk = Nn.met.xkanjiskip or null_skip_table
867 setfield(gx, 'width', bk[1])
868 setfield(gx, 'stretch', bk[2])
869 setfield(gx, 'shrink', bk[3])
870 setfield(g, 'spec', gx)
872 g = node_copy(zero_glue)
874 set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
879 -------------------- 隣接した「塊」間の処理
881 local function get_OA_skip()
883 return new_jfm_glue(pm,
884 fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
886 local function get_OB_skip()
888 return new_jfm_glue(qm, Nq.class,
889 fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
892 -- (anything) .. jachar
893 local function handle_np_jachar(mode)
895 if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then
896 local g = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
897 handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
898 elseif Nq.met then -- qid==id_hlist
899 local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
900 handle_penalty_normal(0, Np.pre, g); real_insert(g)
902 local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
903 handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
905 local g = non_ihb_flag and get_OA_skip() -- O_A
906 if qid==id_glue then handle_penalty_normal(0, Np.pre, g)
907 elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g)
908 else handle_penalty_always(0, Np.pre, g)
912 if mode and Np.kcat%2~=1 then
913 widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp
918 -- jachar .. (anything)
919 local function handle_nq_jachar()
921 local g = non_ihb_flag and get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
922 handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
924 local g =non_ihb_flag and get_OB_skip() -- O_B
925 if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g)
926 elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g)
927 else handle_penalty_always(Nq.post, 0, g)
933 -- (anything) .. (和文文字で始まる hlist)
934 local function handle_np_ja_hlist()
936 if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then
937 local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
938 handle_penalty_normal(Nq.post, 0, g); real_insert(g)
939 elseif Nq.met then -- Nq.id==id_hlist
940 local g = get_kanjiskip() -- K
941 handle_penalty_suppress(0, 0, g); real_insert(g)
943 local g = get_xkanjiskip(Np) -- X
944 handle_penalty_suppress(0, 0, g); real_insert(g)
948 -- (和文文字で終わる hlist) .. (anything)
949 local function handle_nq_ja_hlist()
951 local g = get_xkanjiskip(Nq) -- X
952 handle_penalty_suppress(0, 0, g); real_insert(g)
957 -- Nq が前側のクラスタとなることによる修正
959 local adjust_nq_aux = {
960 [id_glyph] = function() after_alchar(Nq) end, -- after_alchar(Nq)
961 [id_hlist] = function() after_hlist(Nq) end,
962 [id_pbox] = function() after_hlist(Nq) end,
963 [id_disc] = function() after_hlist(Nq) end,
964 [id_pbox_w] = function()
965 luatexbase.call_callback("luatexja.jfmglue.whatsit_after",
971 local x = adjust_nq_aux[Nq.id]
977 -------------------- 開始・終了時の処理
981 local JWP = luatexja.stack_table_index.JWP
982 local function handle_list_tail(mode)
985 -- the current list is to be line-breaked.
986 -- Insert \jcharwidowpenalty
987 Bp = widow_Bp; Np = widow_Np
989 handle_penalty_normal(0,
990 table_current_stack[JWP] or 0)
993 -- the current list is the contents of a hbox
994 local npi, pm = Np.id, Np.met
995 if npi == id_jglyph or (npi==id_pbox and pm) then
996 local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
998 set_attr(g, attr_icflag, BOXBDD)
999 head = insert_after(head, Np.last, g)
1006 local function handle_list_head(par_indented)
1007 local npi, pm = Np.id, Np.met
1008 if npi == id_jglyph or (npi==id_pbox and pm) then
1009 if non_ihb_flag then
1010 local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), Np.class)
1012 set_attr(g, attr_icflag, BOXBDD)
1013 if getid(g)==id_glue and #Bp==0 then
1014 local h = node_new(id_penalty)
1015 setfield(h, 'penalty', 10000); set_attr(h, attr_icflag, BOXBDD)
1017 head = insert_before(head, Np.first, g)
1024 -- return value: (the initial cursor lp), (last node)
1027 local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
1028 local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
1029 local KSK = luatexja.stack_table_index.KSK
1030 local XSK = luatexja.stack_table_index.XSK
1031 local dir_yoko = luatexja.dir_table.dir_yoko
1032 local dir_tate = luatexja.dir_table.dir_tate
1033 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
1034 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
1035 local table_pool = {
1036 {}, {}, {first=nil},
1037 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1038 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1039 post=nil, pre=nil, xspc=nil, },
1040 { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil,
1041 first=nil, id=nil, last=nil, met=nil, nuc=nil,
1042 post=nil, pre=nil, xspc=nil, },
1044 init_var = function (mode,dir)
1045 -- 1073741823: max_dimen
1046 Bp, widow_Bp, widow_Np, Np, Nq
1047 = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
1048 for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
1049 table_current_stack = ltjs.table_current_stack
1051 list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
1052 local is_dir_tate = list_dir==dir_tate
1053 capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
1054 attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
1056 setfield(kanji_skip, 'spec', skip_table_to_spec(KSK))
1057 get_kanjiskip = (getfield(getfield(kanji_skip, 'spec'), 'width') == 1073741823)
1058 and get_kanjiskip_jfm or get_kanjiskip_normal
1060 setfield(xkanji_skip, 'spec', skip_table_to_spec(XSK))
1061 get_xkanjiskip = (getfield(getfield(xkanji_skip, 'spec'), 'width') == 1073741823)
1062 and get_xkanjiskip_jfm or get_xkanjiskip_normal
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 if tex.getattribute(attr_icflag)~=0 then tex_set_attr('global', attr_icflag, 0) end
1086 node_free(getfield(kanji_skip, 'spec'))
1087 node_free(getfield(xkanji_skip, 'spec'))
1089 local h = node_next(head)
1090 if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
1092 if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
1099 -------------------- 外部から呼ばれる関数
1102 function main(ahead, mode, dir)
1103 if not ahead then return ahead end
1105 local lp, last, par_indented = init_var(mode,dir)
1106 lp = calc_np(last, lp)
1108 handle_list_head(par_indented)
1109 lp = calc_np(last,lp); while Np do
1111 local pid, pm = Np.id, Np.met
1113 if pid == id_jglyph then
1114 handle_np_jachar(mode)
1116 if pid==id_hlist then handle_np_ja_hlist()
1117 else handle_np_jachar() end
1119 if Nq.id==id_hlist then handle_nq_ja_hlist()
1120 else handle_nq_jachar() end
1122 lp = calc_np(last,lp)
1124 handle_list_tail(mode)
1126 return cleanup(mode)
1131 local IHB = luatexja.userid_table.IHB
1132 local BPAR = luatexja.userid_table.BPAR
1133 local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
1134 local node_write = Dnode.write
1137 function create_inhibitglue_node()
1138 local tn = node_new(id_whatsit, sid_user)
1139 setfield(tn, 'user_id', IHB)
1140 setfield(tn, 'type', 100)
1141 setfield(tn, 'value', 1)
1145 -- Node for indicating beginning of a paragraph
1146 -- (for ltjsclasses)
1147 function create_beginpar_node()
1148 local tn = node_new(id_whatsit, sid_user)
1149 setfield(tn, 'user_id', BPAR)
1150 setfield(tn, 'type', 100)
1151 setfield(tn, 'value', 1)
1155 local function whatsit_callback(Np, lp, Nq)
1156 if Np and Np.nuc then return Np
1157 elseif Np and getfield(lp, 'user_id') == BPAR then
1158 Np.first = lp; Np.nuc = lp; Np.last = lp
1163 local function whatsit_after_callback(s, Nq, Np)
1164 if not s and getfield(Nq.nuc, 'user_id') == BPAR then
1165 local x, y = node_prev(Nq.nuc), Nq.nuc
1166 Nq.first, Nq.nuc, Nq.last = x, x, x
1169 Nq.class = fast_find_char_class('parbdd', Np.met)
1171 Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
1172 Nq.auto_xspc = false
1174 head = node_remove(head, y)
1180 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
1181 "luatexja.beginpar.np_info", 1)
1182 luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
1183 "luatexja.beginpar.np_info_after", 1)