-- -- luatexja/jfmglue.lua -- luatexbase.provides_module({ name = 'luatexja.jfmglue', date = '2012/07/19', version = '0.5', description = 'Insertion process of JFM glues and kanjiskip', }) module('luatexja.jfmglue', package.seeall) local err, warn, info, log = luatexbase.errwarinf(_NAME) luatexja.load_module('stack'); local ltjs = luatexja.stack luatexja.load_module('jfont'); local ltjf = luatexja.jfont luatexja.load_module('pretreat'); local ltjp = luatexja.pretreat local has_attr = node.has_attribute local set_attr = node.set_attribute local insert_before = node.insert_before local node_next = node.next local round = tex.round local ltjs_fast_get_penalty_table = ltjs.fast_get_penalty_table local ltjf_font_metric_table = ltjf.font_metric_table local ltjf_find_char_class = ltjf.find_char_class local node_new = node.new local node_copy = node.copy local ligature_head = 1 local ligature_tail = 2 local id_glyph = node.id('glyph') local id_hlist = node.id('hlist') local id_vlist = node.id('vlist') local id_rule = node.id('rule') local id_ins = node.id('ins') local id_mark = node.id('mark') local id_adjust = node.id('adjust') local id_disc = node.id('disc') local id_whatsit = node.id('whatsit') local id_math = node.id('math') local id_glue = node.id('glue') local id_kern = node.id('kern') local id_penalty = node.id('penalty') local id_glue_spec = node.id('glue_spec') local id_jglyph = node.id('glyph') + 256 -- Japanese character local id_box_like = node.id('hlist') + 256 -- vbox, shifted hbox local id_pbox = node.id('hlist') + 512 -- already processed nodes (by \unhbox) local id_pbox_w = node.id('hlist') + 513 -- cluster which consists of a whatsit local sid_user = node.subtype('user_defined') local sid_start_link = node.subtype('pdf_start_link') local sid_start_thread = node.subtype('pdf_start_thread') local sid_end_link = node.subtype('pdf_end_link') local sid_end_thread = node.subtype('pdf_end_thread') local ITALIC = 1 local PACKED = 2 local KINSOKU = 3 local FROM_JFM = 4 local LINE_END = 5 local KANJI_SKIP = 6 local XKANJI_SKIP = 7 local PROCESSED = 8 local IC_PROCESSED = 9 local BOXBDD = 15 local PROCESSED_BEGIN_FLAG = 16 local kanji_skip local xkanji_skip local attr_orig_char = luatexbase.attributes['ltj@origchar'] local attr_curjfnt = luatexbase.attributes['ltj@curjfnt'] local attr_icflag = luatexbase.attributes['ltj@icflag'] local attr_autospc = luatexbase.attributes['ltj@autospc'] local attr_autoxspc = luatexbase.attributes['ltj@autoxspc'] local max_dimen = 1073741823 local function get_attr_icflag(p) return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG end -------------------- Helper functions local function copy_attr(new, old) -- 仕様が決まるまで off にしておく end -- This function is called only for acquiring `special' characters. local function fast_find_char_class(c,m) return m.size_cache.chars[c] or 0 end local spec_zero_glue = node_new(id_glue_spec) spec_zero_glue.width = 0; spec_zero_glue.stretch_order = 0; spec_zero_glue.stretch = 0 spec_zero_glue.shrink_order = 0; spec_zero_glue.shrink = 0 local function get_zero_spec() return node_copy(spec_zero_glue) end local function skip_table_to_spec(n) local g, st = node_new(id_glue_spec), ltjs.fast_get_skip_table(n) g.width = st.width; g.stretch = st.stretch; g.shrink = st.shrink g.stretch_order = st.stretch_order; g.shrink_order = st.shrink_order return g end -- penalty 値の計算 local function add_penalty(p,e) if p.penalty>=10000 then if e<=-10000 then p.penalty = 0 end elseif p.penalty<=-10000 then if e>=10000 then p.penalty = 0 end else p.penalty = p.penalty + e if p.penalty>=10000 then p.penalty = 10000 elseif p.penalty<=-10000 then p.penalty = -10000 end end return end -- 「異なる JFM」の間の調整方法 diffmet_rule = math.two_average function math.two_add(a,b) return a+b end function math.two_average(a,b) return (a+b)*0.5 end -------------------- idea -- 2 node の間に glue/kern/penalty を挿入する． -- 基本方針: char node q と char node p の間 -- 　Np: 「p を核とする塊」 -- 　　first: 最初の node，nuc: p，last: 最後の node -- 　　id: 核 node の種類 -- 　Nq: 「q を核とする塊」 -- 　　実際の glue は Np.last, Nq.first の間に挿入される -- 　Bp: Np.last, Nq.first の間の penalty node 達の配列 -- Np, Nq, Bp, widow_Bp について -- Np, Nq は別々のテーブル． -- 1回のループごとに Nq = Np, Np = (new table) となるのは効率が悪いので， -- Np <-> Nq 入れ替え，その後 Np をクリアすることでテーブルを再利用． -- 同様の関係は Bp, widow_Bp にも． -- 核の定義： -- 　node x が non-char node のときは，x のみ -- 　x が char_node のときは， -- 　- x が \accent の第二引数だったとき -- 　 [kern2 kern y kern2] x の 3 node が核に加わる -- 　- x の直後に \/ 由来 kern があったとき -- 　 その \/ 由来の kern が核に加わる -- p, q の走査で無視するもの： -- 　ins, mark, adjust, whatsit, penalty -- -- Nq.last .. + .. Bp.first .... Bp[last] .... * .. Np.first -- +: kern from LINEEND はここに入る -- *: jfm glue はここに入る local head -- the head of current list local Np, Nq, Bp local widow_Bp, widow_Np -- \jcharwidowpenalty 挿入位置管理用 local ihb_flag -- JFM グルー挿入抑止用 flag -- on: \inhibitglue 指定時，hlist の周囲 -------------------- hlist 内の文字の検索 local first_char, last_char, find_first_char local function check_box(box_ptr, box_end) local p = box_ptr; local found_visible_node = false if not p then find_first_char = false; first_char = nil; last_char = nil return true end while p and p~=box_end do local pid = p.id if pid==id_kern and p.subtype==2 then p = node_next(node_next(node_next(p))); pid = p.id -- p must be glyph_node end if pid==id_glyph then repeat if find_first_char then first_char = p; find_first_char = false end last_char = p; found_visible_node = true; p=node_next(p) if (not p) or p==box_end then return found_visible_node end until p.id~=id_glyph pid = p.id -- p must be non-nil end if pid==id_kern and get_attr_icflag(p)==IC_PROCESSED then p = node_next(p); elseif pid==id_hlist then if PACKED == get_attr_icflag(p) then if find_first_char then first_char = p.head; find_first_char = false end last_char = p.head; found_visible_node = true else if p.shift==0 then if check_box(p.head, nil) then found_visible_node = true end else if find_first_char then find_first_char = false else last_char = nil end end end elseif not (pid==id_ins or pid==id_mark or pid==id_adjust or pid==id_whatsit or pid==id_penalty) then found_visible_node = true if find_first_char then find_first_char = false else last_char = nil end end p = node_next(p) end return found_visible_node end function check_box_high(Nx, box_ptr, box_end) first_char = nil; last_char = nil; find_first_char = true if check_box(box_ptr, box_end) then if first_char then if first_char.font == has_attr(first_char, attr_curjfnt) then set_np_xspc_jachar(Nx, first_char) else set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head) end end end return last_char end -------------------- Np の計算と情報取得 luatexbase.create_callback("luatexja.jfmglue.whatsit_getinfo", "data", function (Np, lp, Nq) if Np.nuc then return Np else return Np -- your code end end) luatexbase.create_callback("luatexja.jfmglue.whatsit_after", "data", function (stat, Nq, Np) return false end) -- calc next Np do local function set_attr_icflag_processed(p) if get_attr_icflag(p)<= ITALIC then set_attr(p, attr_icflag, PROCESSED) end end local function check_next_ickern(lp) if lp.id == id_kern and ITALIC == get_attr_icflag(lp) then set_attr(lp, attr_icflag, IC_PROCESSED) Np.last = lp; return node_next(lp) else Np.last = Np.nuc; return lp end end local function calc_np_pbox(lp, last) Np.first = Np.first or lp; Np.id = id_pbox local lpa = KINSOKU -- dummy= set_attr(lp, attr_icflag, get_attr_icflag(lp)); while lp~=last and lpa>=PACKED and lpa=PACKED then if lpa == BOXBDD then local lq = node_next(lp) head = node.remove(head, lp); node.free(lp); lp = lq else return calc_np_pbox(lp, last) end -- id_pbox else k, lp = calc_np_auxtable[lp.id](lp) if k then return lp end end end Np = nil; return lp end end local calc_np = calc_np -- extract informations from Np -- We think that "Np is a Japanese character" if Np.met~=nil, -- "Np is an alphabetic character" if Np.pre~=nil, -- "Np is not a character" otherwise. do -- 和文文字のデータを取得 local attr_jchar_class = luatexbase.attributes['ltj@charclass'] function set_np_xspc_jachar(Nx, x) local m = ltjf_font_metric_table[x.font] local c = has_attr(x, attr_orig_char) or x.char local cls = ltjf_find_char_class(x.char, m) if c ~= x.char and cls==0 then cls = ltjf_find_char_class(-c, m) end Nx.class = cls; set_attr(x, attr_jchar_class, cls) Nx.lend = m.size_cache.char_type[cls].kern[fast_find_char_class('lineend', m)] or 0 Nx.met, Nx.var, Nx.char = m, m.var, c Nx.pre = ltjs_fast_get_penalty_table('pre', c) or 0 Nx.post = ltjs_fast_get_penalty_table('post', c) or 0 Nx.xspc = ltjs_fast_get_penalty_table('xsp', c) or 3 Nx.auto_kspc, Nx.auto_xspc = (has_attr(x, attr_autospc)==1), (has_attr(x, attr_autoxspc)==1) end local set_np_xspc_jachar = set_np_xspc_jachar -- 欧文文字のデータを取得 local floor = math.floor function set_np_xspc_alchar(Nx, c,x, lig) if c~=-1 then if lig == ligature_head then while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do x = x.components; c = x.char end else while x.components and x.subtype and math.floor(x.subtype*0.5)%2==1 do x = node.tail(x.components); c = x.char end end Nx.pre = ltjs_fast_get_penalty_table('pre', c) or 0 Nx.post = ltjs_fast_get_penalty_table('post', c) or 0 Nx.char = 'jcharbdd' else Nx.pre, Nx.post, Nx.char = 0, 0, -1 end Nx.met = nil Nx.xspc = ltjs_fast_get_penalty_table('xsp', c) or 3 Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1) end local set_np_xspc_alchar = set_np_xspc_alchar -- Np の情報取得メインルーチン function extract_np() local x, i = Np.nuc, Np.id; if i == id_jglyph then return set_np_xspc_jachar(Np, x) elseif i == id_glyph then return set_np_xspc_alchar(Np, x.char, x, ligature_head) elseif i == id_hlist then Np.last_char = check_box_high(Np, x.head, nil) elseif i == id_pbox then Np.last_char = check_box_high(Np, Np.first, node_next(Np.last)) elseif i == id_disc then Np.last_char = check_box_high(Np, x.replace, nil) elseif i == id_math then return set_np_xspc_alchar(Np, -1, x) end end -- change the information for the next loop -- (will be done if Nx is an alphabetic character or a hlist) function after_hlist(Nx) local s = Nx.last_char if s then if s.font == has_attr(s, attr_curjfnt) then set_np_xspc_jachar(Nx, s) else set_np_xspc_alchar(Nx, s.char, s, ligature_tail) end else Nx.pre, Nx.met = nil, nil end end function after_alchar(Nx) local x = Nx.nuc return set_np_xspc_alchar(Nx, x.char,x, ligature_tail) end end local after_hlist, after_alchar, extract_np = after_hlist, after_alchar, extract_np -------------------- 最下層の処理 local function lineend_fix(g) if g and g.id==id_kern then Nq.lend = 0 elseif Nq.lend~=0 then if not g then g = node_new(id_kern); --copy_attr(g, Nq.nuc); g.subtype = 1; g.kern = -Nq.lend; set_attr(g, attr_icflag, LINEEND) else g.spec.width = g.spec.width - Nq.lend end end return g end -- change penalties (or create a new penalty, if needed) local function handle_penalty_normal(post, pre, g) local a = (pre or 0) + (post or 0) if #Bp == 0 then if (a~=0 and not(g and g.id==id_kern)) or Nq.lend~=0 then local p = node_new(id_penalty); --copy_attr(p, Nq.nuc) if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end p.penalty = a head = insert_before(head, Np.first, p) Bp[1]=p; set_attr(p, attr_icflag, KINSOKU) end else for _, v in pairs(Bp) do add_penalty(v,a) end end end local function handle_penalty_always(post, pre, g) local a = (pre or 0) + (post or 0) if #Bp == 0 then if not (g and g.id==id_glue) or Nq.lend~=0 then local p = node_new(id_penalty); --copy_attr(p, Nq.nuc) if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end p.penalty = a head = insert_before(head, Np.first, p) Bp[1]=p set_attr(p, attr_icflag, KINSOKU) end else for _, v in pairs(Bp) do add_penalty(v,a) end end end local function handle_penalty_suppress(post, pre, g) local a = (pre or 0) + (post or 0) if #Bp == 0 then if g and g.id==id_glue then local p = node_new(id_penalty); --copy_attr(p, Nq.nuc) p.penalty = 10000; head = insert_before(head, Np.first, p) Bp[1]=p set_attr(p, attr_icflag, KINSOKU) end else for _, v in pairs(Bp) do add_penalty(v,a) end end end -- 和文文字間の JFM glue を node 化 local function new_jfm_glue(Nn, bc, ac) -- bc, ac: char classes local z = Nn.met.size_cache.char_type[bc] local g = z.glue[ac] if g then g = node_copy(g); g.spec = node.copy(g.spec); elseif z.kern[ac] then g = node_new(id_kern); --copy_attr(g, Nn.nuc) g.subtype = 1; g.kern = z.kern[ac] set_attr(g, attr_icflag, FROM_JFM); end return g end -- Nq.last (kern w) .... (glue/kern g) Np.first local function real_insert(w, g) if w~=0 then local h = node_new(id_kern); --copy_attr(h, Nq.nuc) set_attr(h, attr_icflag, LINE_END) h.kern = w; h.subtype = 1 head = node.insert_after(head, Nq.last, h) end if g then head = insert_before(head, Np.first, g) Np.first = g end end -------------------- 和文文字間空白量の決定 -- get kanjiskip local get_kanjiskip local function get_kanjiskip_normal() local g = node_new(id_glue); --copy_attr(g, Nq.nuc) g.spec = (Np.auto_kspc or Nq.auto_kspc) and node_copy(kanji_skip) or get_zero_spec() set_attr(g, attr_icflag, KANJI_SKIP) return g end local function get_kanjiskip_jfm() local g = node_new(id_glue); --copy_attr(g, Nq.nuc) if Np.auto_kspc or Nq.auto_kspc then local gx = node_new(id_glue_spec); gx.stretch_order, gx.shrink_order = 0, 0 local bk = Nq.met.size_cache.kanjiskip local ak if (Np.met.size_cache==Nq.met.size_cache) and (Nq.var==Np.var) then ak = nil else ak = Np.met.size_cache.kanjiskip end if bk then if ak then gx.width = round(diffmet_rule(bk[1], ak[1])) gx.stretch = round(diffmet_rule(bk[2], ak[2])) gx.shrink = -round(diffmet_rule(-bk[3], -ak[3])) else gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3] end elseif ak then gx.width = ak[1]; gx.stretch = ak[2]; gx.shrink = ak[3] else gx.width, gx.stretch, gx.shrink = 0, 0, 0 end g.spec = gx else g.spec = get_zero_spec() end set_attr(g, attr_icflag, KANJI_SKIP) return g end local function calc_ja_ja_aux(gb,ga) if not gb then return ga else if not ga then return gb end local k = node.type(gb.id) .. node.type(ga.id) if k == 'glueglue' then -- 両方とも glue． gb.spec.width = round(diffmet_rule(gb.spec.width, ga.spec.width)) gb.spec.stretch = round(diffmet_rule(gb.spec.stretch,ga.spec.shrink)) gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, -ga.spec.shrink)) node.free(ga) return gb elseif k == 'kernkern' then -- 両方とも kern． gb.kern = round(diffmet_rule(gb.kern, ga.kern)) node.free(ga) return gb elseif k == 'kernglue' then -- gb: kern, ga: glue ga.spec.width = round(diffmet_rule(gb.kern,ga.spec.width)) ga.spec.stretch = round(diffmet_rule(ga.spec.stretch, 0)) ga.spec.shrink = -round(diffmet_rule(-ga.spec.shrink, 0)) node.free(gb) return ga else -- gb: glue, ga: kern gb.spec.width = round(diffmet_rule(ga.kern, gb.spec.width)) gb.spec.stretch = round(diffmet_rule(gb.spec.stretch, 0)) gb.spec.shrink = -round(diffmet_rule(-gb.spec.shrink, 0)) node.free(ga) return gb end end end local function calc_ja_ja_glue() if ihb_flag then return nil elseif (Nq.met.size_cache==Np.met.size_cache) and (Nq.var==Np.var) then return new_jfm_glue(Nq, Nq.class, Np.class) else return calc_ja_ja_aux(new_jfm_glue(Nq, Nq.class, fast_find_char_class('diffmet',Nq.met)), new_jfm_glue(Np, fast_find_char_class('diffmet',Np.met), Np.class)) end end -------------------- 和欧文間空白量の決定 -- get xkanjiskip local get_xkanjiskip local function get_xkanjiskip_normal(Nn) local g = node_new(id_glue); --copy_attr(g, Nn.nuc) local gx = node_new(id_glue_spec); g.spec = gx if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then g.spec = node_copy(xkanji_skip) else g.spec = get_zero_spec() end set_attr(g, attr_icflag, XKANJI_SKIP) return g end local function get_xkanjiskip_jfm(Nn) local g = node_new(id_glue); --copy_attr(g, Nn.nuc) if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then local gx = node_new(id_glue_spec); gx.stretch_order, gx.shrink_order = 0, 0 local bk = Nn.met.size_cache.xkanjiskip if bk then gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3] else gx.width, gx.stretch, gx.shrink = 0, 0, 0 end g.spec = gx else g.spec = get_zero_spec() end set_attr(g, attr_icflag, XKANJI_SKIP) return g end -------------------- 隣接した「塊」間の処理 local function get_OA_skip() if not ihb_flag then return new_jfm_glue(Np, fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), Np.met), Np.class) else return nil end end local function get_OB_skip() if not ihb_flag then return new_jfm_glue(Nq, Nq.class, fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), Nq.met)) else return nil end end -- (anything) .. jachar local function handle_np_jachar(mode) if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id==id_pbox_w) and Nq.met) then local g = lineend_fix(calc_ja_ja_glue() or get_kanjiskip()) -- M->K handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g) elseif Nq.met then -- Nq.id==id_hlist local g = get_OA_skip() or get_kanjiskip() -- O_A->K handle_penalty_normal(0, Np.pre, g); real_insert(0, g) elseif Nq.pre then local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X if Nq.id==id_hlist then Nq.post = 0 end handle_penalty_normal(Nq.post, Np.pre, g); real_insert(0, g) else local g = get_OA_skip() -- O_A if Nq.id==id_glue then handle_penalty_normal(0, Np.pre, g) elseif Nq.id==id_kern then handle_penalty_suppress(0, Np.pre, g) else handle_penalty_always(0, Np.pre, g) end real_insert(0, g) end if mode and (ltjs_fast_get_penalty_table('kcat', Np.char) or 0)%2~=1 then widow_Np.first, widow_Bp, Bp = Np.first, Bp, widow_Bp end end -- jachar .. (anything) local function handle_nq_jachar() if Np.pre then if Np.id==id_hlist then Np.pre = 0 end local g = lineend_fix(get_OB_skip() or get_xkanjiskip(Nq)) -- O_B->X handle_penalty_normal(Nq.post, Np.pre, g); real_insert(Nq.lend, g) else local g = lineend_fix(get_OB_skip()) -- O_B if Np.id==id_glue then handle_penalty_normal(Nq.post, 0, g) elseif Np.id==id_kern then handle_penalty_suppress(Nq.post, 0, g) else handle_penalty_always(Nq.post, 0, g) end real_insert(Nq.lend, g) end end -- (anything) .. (和文文字で始まる hlist) local function handle_np_ja_hlist() if Nq.id==id_jglyph or ((Nq.id==id_pbox or Nq.id == id_pbox_w) and Nq.met) then local g = lineend_fix(get_OB_skip() or get_kanjiskip()) -- O_B->K handle_penalty_normal(Nq.post, 0, g); real_insert(Nq.lend, g) elseif Nq.met then -- Nq.id==id_hlist local g = get_kanjiskip() -- K handle_penalty_suppress(0, 0, g); real_insert(0, g) elseif Nq.pre then local g = get_xkanjiskip(Np) -- X handle_penalty_suppress(0, 0, g); real_insert(0, g) end end -- (和文文字で終わる hlist) .. (anything) local function handle_nq_ja_hlist() if Np.pre then local g = get_xkanjiskip(Nq) -- X handle_penalty_suppress(0, 0, g); real_insert(0, g) end end -- Nq が前側のクラスタとなることによる修正 local function adjust_nq() if Nq.id==id_glyph then after_alchar(Nq) elseif Nq.id==id_hlist or Nq.id==id_pbox or Nq.id==id_disc then after_hlist(Nq) elseif Nq.id == id_pbox_w then luatexbase.call_callback("luatexja.jfmglue.whatsit_after", false, Nq, Np) end end -------------------- 開始・終了時の処理 -- リスト末尾の処理 local function handle_list_tail(mode) adjust_nq(); Np = Nq if mode then -- the current list is to be line-breaked: if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then if Np.lend~=0 then g = node_new(id_kern); g.subtype = 0; g.kern = Np.lend --copy_attr(g, Np.nuc); set_attr(g, attr_icflag, BOXBDD) node.insert_after(head, Np.last, g) end end -- Insert \jcharwidowpenalty Bp = widow_Bp; Np = widow_Np; Nq.lend = 0 if Np.first then handle_penalty_normal(0, ltjs_fast_get_penalty_table('jwp', 0) or 0) end else -- the current list is the contents of a hbox if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then local g = new_jfm_glue(Np, Np.class, fast_find_char_class('boxbdd',Np.met)) if g then set_attr(g, attr_icflag, BOXBDD) head = node.insert_after(head, Np.last, g) end end end end -- リスト先頭の処理 local function handle_list_head(par_indented) if Np.id == id_jglyph or (Np.id==id_pbox and Np.met) then if not ihb_flag then local g = new_jfm_glue(Np, fast_find_char_class(par_indented, Np.met), Np.class) if g then set_attr(g, attr_icflag, BOXBDD) if g.id==id_glue and #Bp==0 then local h = node_new(id_penalty); --copy_attr(h, Np.nuc) h.penalty = 10000; set_attr(h, attr_icflag, BOXBDD) end head = insert_before(head, Np.first, g) end end end end -- initialize -- return value: (the initial cursor lp), (last node) local function init_var(mode) Bp, widow_Bp, widow_Np = {}, {}, {first = nil} kanji_skip=skip_table_to_spec('kanjiskip') get_kanjiskip = (kanji_skip.width == max_dimen) and get_kanjiskip_jfm or get_kanjiskip_normal xkanji_skip=skip_table_to_spec('xkanjiskip') get_xkanjiskip = (xkanji_skip.width == max_dimen) and get_xkanjiskip_jfm or get_xkanjiskip_normal Np = { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil, first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil, post=nil, pre=nil, xspc=nil, } Nq = { auto_kspc=nil, auto_xspc=nil, char=nil, class=nil, first=nil, id=nil, last=nil, lend=0, met=nil, nuc=nil, post=nil, pre=nil, xspc=nil, } if mode then -- the current list is to be line-breaked: -- hbox from \parindent is skipped. local lp, par_indented = head, 'boxbdd' while lp and ((lp.id==id_whatsit and lp.subtype~=sid_user) or ((lp.id==id_hlist) and (lp.subtype==3))) do if (lp.id==id_hlist) and (lp.subtype==3) then par_indented = 'parbdd' end lp=node_next(lp) end return lp, node.tail(head), par_indented else -- the current list is the contents of a hbox: -- insert a sentinel local g = node_new(id_kern) node.insert_after(head, node.tail(head), g); last = g return head, g, 'boxbdd' end end local function cleanup(mode, last) -- adjust attr_icflag for avoiding error tex.setattribute('global', attr_icflag, 0) node.free(kanji_skip); node.free(xkanji_skip) if mode then local h = node_next(head) if h.id == id_penalty and h.penalty == 10000 then h = h.next if h.id == id_glue and h.subtype == 15 and not h.next then return false end end return head else head = node.remove(head, last); node.free(last);-- remove the sentinel set_attr(head, attr_icflag, get_attr_icflag(head) + PROCESSED_BEGIN_FLAG); return head end end -------------------- 外部から呼ばれる関数 -- main interface function main(ahead, mode) if not ahead then return ahead end head = ahead; local lp, last, par_indented = init_var(mode); lp = calc_np(lp, last) if Np then extract_np(); handle_list_head(par_indented) else return cleanup(mode, last) end lp = calc_np(lp, last) while Np do extract_np(); adjust_nq() -- 挿入部 if Np.id == id_jglyph then handle_np_jachar(mode) elseif Np.met then if Np.id==id_hlist then handle_np_ja_hlist() else handle_np_jachar() end elseif Nq.met then if Nq.id==id_hlist then handle_nq_ja_hlist() else handle_nq_jachar() end end lp = calc_np(lp, last) end handle_list_tail(mode) return cleanup(mode, last) end -- \inhibitglue function create_inhibitglue_node() local tn = node_new(id_whatsit, sid_user) tn.user_id=30111; tn.type=100; tn.value=1 node.write(tn) end -- Node for indicating beginning of a paragraph -- (for ltjsclasses) function create_beginpar_node() local tn = node_new(id_whatsit, sid_user) tn.user_id=30114; tn.type=100; tn.value=1 node.write(tn) end do local function whatsit_callback(Np, lp, Nq) if Np and Np.nuc then return Np elseif Np and lp.user_id == 30114 then Np.first = lp; Np.nuc = lp; Np.last = lp Np.char = 'parbdd' Np.met = nil Np.pre = 0; Np.post = 0 Np.xspc = 0 Np.auto_xspc = false return Np end end local function whatsit_after_callback(s, Nq, Np) if not s and Nq.nuc.user_id == 30114 then local x, y = node.prev(Nq.nuc), Nq.nuc Nq.first, Nq.nuc, Nq.last = x, x, x head = node.remove(head, y) end return s end luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback, "luatexja.beginpar.np_info", 1) luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback, "luatexja.beginpar.np_info_after", 1) end