-- -- 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 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 = 512 -- Japanese character local id_box_like = 256 -- vbox, shifted hbox local id_pbox = 257 -- already processed nodes (by \unhbox) local id_pbox_w = 258 -- 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 = luatexja.icflag_table.ITALIC local PACKED = luatexja.icflag_table.PACKED local KINSOKU = luatexja.icflag_table.KINSOKU local FROM_JFM = luatexja.icflag_table.FROM_JFM local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP local PROCESSED = luatexja.icflag_table.PROCESSED local IC_PROCESSED = luatexja.icflag_table.IC_PROCESSED local BOXBDD = luatexja.icflag_table.BOXBDD local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG local kanji_skip local xkanji_skip local table_current_stack local attr_curjfnt = luatexbase.attributes['ltj@curjfnt'] local attr_icflag = luatexbase.attributes['ltj@icflag'] 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.chars[c] or 0 end -- 文字クラスの決定 local function slow_find_char_class(c, m, oc) local xc = c or oc local cls = ltjf_find_char_class(oc, m) if xc ~= oc and cls==0 then cls = ltjf_find_char_class(-xc, m) end return cls, xc end local zero_glue = node_new(id_glue) spec_zero_glue = node_new(id_glue_spec) -- must be public, since mentioned from other sources local spec_zero_glue = spec_zero_glue 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 zero_glue.spec = spec_zero_glue 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) local pp = p.penalty if pp>=10000 then if e<=-10000 then pp = 0 end elseif pp<=-10000 then if e>=10000 then pp = 0 end else pp = pp + e if pp>=10000 then p.penalty = 10000 elseif pp<=-10000 then p.penalty = -10000 else p.penalty = pp end end return end -- 「異なる JFM」の間の調整方法 diffmet_rule = math.two_paverage function math.two_add(a,b) return a+b end function math.two_average(a,b) return (a+b)*0.5 end function math.two_paverage(a,b) return (a+b)*0.5 end function math.two_pleft(a,b) return a end function math.two_pright(a,b) return b end 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 then if get_attr_icflag(p)==IC_PROCESSED then -- do nothing elseif p.subtype==2 then p = node_next(node_next(p)); -- Note that another node_next will be executed outside this if-statement. else found_visible_node = true if find_first_char then find_first_char = false else last_char = nil end end 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 pid==id_math then if find_first_char then first_char = p; find_first_char = false end last_char = p; found_visible_node = true 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 local first_char = first_char if first_char then if first_char.id==id_glyph then if first_char.font == (has_attr(first_char, attr_curjfnt) or -1) then set_np_xspc_jachar(Nx, first_char) else set_np_xspc_alchar(Nx, first_char.char,first_char, ligature_head) end else -- math_node set_np_xspc_alchar(Nx, -1,first_char) 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%PROCESSED_BEGIN_FLAG == 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 local PRE = luatexja.stack_table_index.PRE local POST = luatexja.stack_table_index.POST local KCAT = luatexja.stack_table_index.KCAT local XSP = luatexja.stack_table_index.XSP -- 和文文字のデータを取得 local attr_jchar_class = luatexbase.attributes['ltj@charclass'] local attr_orig_char = luatexbase.attributes['ltj@origchar'] local attr_autospc = luatexbase.attributes['ltj@autospc'] local attr_autoxspc = luatexbase.attributes['ltj@autoxspc'] function set_np_xspc_jachar(Nx, x) local m = ltjf_font_metric_table[x.font] local cls, c = slow_find_char_class(has_attr(x, attr_orig_char), m, x.char) Nx.class = cls; set_attr(x, attr_jchar_class, cls) Nx.met, Nx.char = m, c Nx.pre = table_current_stack[PRE + c] or 0 Nx.post = table_current_stack[POST + c] or 0 Nx.xspc = table_current_stack[XSP + c] or 3 Nx.kcat = table_current_stack[KCAT + c] or 0 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 local xc, xs = x.components, x.subtype if lig == 1 then while xc and xs and xs%4>=2 do x = xc; xc, xs = x.components, x.subtype end c = x.char else while xc and xs and xs%4>=2 do x = node.tail(xc); xc, xs = x.components, x.subtype end c = x.char end Nx.pre = table_current_stack[PRE + c] or 0 Nx.post = table_current_stack[POST + c] or 0 Nx.xspc = table_current_stack[XSP + c] or 3 Nx.char = 'jcharbdd' else Nx.pre, Nx.post, Nx.char = 0, 0, -1 Nx.xspc = table_current_stack[XSP - 1] or 3 end Nx.met = nil 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.id==id_glyph then if s.font == (has_attr(s, attr_curjfnt) or -1) then set_np_xspc_jachar(Nx, s) else set_np_xspc_alchar(Nx, s.char, s, ligature_tail) end else set_np_xspc_alchar(Nx, -1, s) 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 -- 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)) 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) 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(m, bc, ac) -- bc, ac: char classes local z = m.char_type[bc] local g, d = z.glue[ac], 0 if g then g,d = node_copy(g[1]), g[2]; g.spec = node_copy(g.spec); -- node_copy は spec をコピーする else local k = z.kern[ac] if k then g = node_new(id_kern); --copy_attr(g, Nn.nuc) g.subtype = 1; g.kern, d = k[1], k[2] set_attr(g, attr_icflag, FROM_JFM); end end return g, d end -- Nq.last (kern w) .... (glue/kern g) Np.first local function real_insert(g) 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() if Np.auto_kspc or Nq.auto_kspc then return node_copy(kanji_skip) else local g = node_copy(zero_glue) set_attr(g, attr_icflag, KANJI_SKIP) return g end end local function get_kanjiskip_jfm() local g if Np.auto_kspc or Nq.auto_kspc then g = node_new(id_glue); --copy_attr(g, Nq.nuc) local gx = node_new(id_glue_spec); gx.stretch_order, gx.shrink_order = 0, 0 local pm, qm = Np.met, Nq.met local bk = qm.kanjiskip or {0, 0, 0} if (pm.char_type==qm.char_type) and (qm.var==pm.var) then gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3] else local ak = pm.kanjiskip or {0, 0, 0} 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])) end g.spec = gx else g = node_copy(zero_glue) end set_attr(g, attr_icflag, KANJI_SKIP) return g end local function calc_ja_ja_aux(gb,ga, db, da) local rbb, rab = (1-db)/2, (1-da)/2 -- 「前の文字」由来のグルーの割合 local rba, raa = (1+db)/2, (1+da)/2 -- 「前の文字」由来のグルーの割合 if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright and diffmet_rule ~= math.two_paverage then rbb, rab, rba, raa = 1,0,0,1 end if not gb then if ga then gb = node_new(id_kern); gb.kern = 0 else return nil end elseif not ga then ga = node_new(id_kern); ga.kern = 0 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( rbb*gb.spec.width + rba*ga.spec.width, rab*gb.spec.width + raa*ga.spec.width )) gb.spec.stretch = round(diffmet_rule( rbb*gb.spec.stretch + rba*ga.spec.stretch, rab*gb.spec.stretch + raa*ga.spec.stretch )) gb.spec.shrink = -round(diffmet_rule( -rbb*gb.spec.shrink - rba*ga.spec.shrink, -rab*gb.spec.shrink - raa*ga.spec.shrink )) node.free(ga) return gb elseif k == 'kernkern' then -- 両方とも kern． gb.kern = round(diffmet_rule( rbb*gb.kern + rba*ga.kern, rab*gb.kern + raa*ga.kern )) node.free(ga) return gb elseif k == 'kernglue' then -- gb: kern, ga: glue ga.spec.width = round(diffmet_rule( rbb*gb.kern + rba*ga.spec.width, rab*gb.kern + raa*ga.spec.width )) ga.spec.stretch = round(diffmet_rule( rba*ga.spec.stretch, raa*ga.spec.stretch )) ga.spec.shrink = -round(diffmet_rule( -rba*ga.spec.shrink,-raa*ga.spec.shrink )) node.free(gb) return ga else -- gb: glue, ga: kern gb.spec.width = round(diffmet_rule( rba*ga.kern + rbb*gb.spec.width, raa*ga.kern + rab*gb.spec.width )) gb.spec.stretch = round(diffmet_rule( rbb*gb.spec.stretch, rab*gb.spec.stretch )) gb.spec.shrink = -round(diffmet_rule( -rbb*gb.spec.shrink,-rab*gb.spec.shrink )) node.free(ga) return gb end end local function calc_ja_ja_glue() if ihb_flag then return nil else local qm, pm = Nq.met, Np.met if (qm.char_type==pm.char_type) and (qm.var==pm.var) then return new_jfm_glue(qm, Nq.class, Np.class) else local npn, nqn = Np.nuc, Nq.nuc local gb, db = new_jfm_glue(qm, Nq.class, slow_find_char_class(has_attr(npn, attr_orig_char), qm, npn.char)) local ga, da = new_jfm_glue(pm, slow_find_char_class(has_attr(nqn, attr_orig_char), pm, nqn.char), Np.class) return calc_ja_ja_aux(gb, ga, db, da); end end end -------------------- 和欧文間空白量の決定 -- get xkanjiskip local get_xkanjiskip local function get_xkanjiskip_normal(Nn) if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then return node_copy(xkanji_skip) else local g = node_copy(zero_glue) set_attr(g, attr_icflag, XKANJI_SKIP) return g end end local function get_xkanjiskip_jfm(Nn) local g if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then g = node_new(id_glue); --copy_attr(g, Nn.nuc) local gx = node_new(id_glue_spec); gx.stretch_order, gx.shrink_order = 0, 0 local bk = Nn.met.xkanjiskip or {0, 0, 0} gx.width = bk[1]; gx.stretch = bk[2]; gx.shrink = bk[3] g.spec = gx else g = node_copy(zero_glue) 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 local pm = Np.met return new_jfm_glue(pm, fast_find_char_class(((Nq.id == id_math and -1) or 'jcharbdd'), pm), Np.class) else return nil end end local function get_OB_skip() if not ihb_flag then local qm = Nq.met return new_jfm_glue(qm, Nq.class, fast_find_char_class(((Np.id == id_math and -1) or'jcharbdd'), qm)) else return nil end end -- (anything) .. jachar local function handle_np_jachar(mode) local qid = Nq.id if qid==id_jglyph or ((qid==id_pbox or qid==id_pbox_w) and Nq.met) then local g = calc_ja_ja_glue() or get_kanjiskip() -- M->K handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g) elseif Nq.met then -- qid==id_hlist local g = get_OA_skip() or get_kanjiskip() -- O_A->K handle_penalty_normal(0, Np.pre, g); real_insert(g) elseif Nq.pre then local g = get_OA_skip() or get_xkanjiskip(Np) -- O_A->X handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g) else local g = get_OA_skip() -- O_A if qid==id_glue then handle_penalty_normal(0, Np.pre, g) elseif qid==id_kern then handle_penalty_suppress(0, Np.pre, g) else handle_penalty_always(0, Np.pre, g) end real_insert(g) end if mode and Np.kcat%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 local g = get_OB_skip() or get_xkanjiskip(Nq) -- O_B->X handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g) else local g = 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(g) end end -- (anything) .. (和文文字で始まる hlist) local function handle_np_ja_hlist() local qid = Nq.id if qid==id_jglyph or ((qid==id_pbox or Nq.id == id_pbox_w) and Nq.met) then local g = get_OB_skip() or get_kanjiskip() -- O_B->K handle_penalty_normal(Nq.post, 0, g); real_insert(g) elseif Nq.met then -- Nq.id==id_hlist local g = get_kanjiskip() -- K handle_penalty_suppress(0, 0, g); real_insert(g) elseif Nq.pre then local g = get_xkanjiskip(Np) -- X handle_penalty_suppress(0, 0, g); real_insert(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(g) end end -- Nq が前側のクラスタとなることによる修正 do local adjust_nq_aux = { [id_glyph] = function() local x = Nq.nuc return set_np_xspc_alchar(Nq, x.char,x, 2) end, -- after_alchar(Nq) [id_hlist] = function() after_hlist(Nq) end, [id_pbox] = function() after_hlist(Nq) end, [id_disc] = function() after_hlist(Nq) end, [id_pbox_w] = function() luatexbase.call_callback("luatexja.jfmglue.whatsit_after", false, Nq, Np) end, } function adjust_nq() local x = adjust_nq_aux[Nq.id] if x then x() end end end -------------------- 開始・終了時の処理 -- リスト末尾の処理 local JWP = luatexja.stack_table_index.JWP local function handle_list_tail(mode) adjust_nq(); Np = Nq if mode then -- the current list is to be line-breaked. -- Insert \jcharwidowpenalty Bp = widow_Bp; Np = widow_Np if Np.first then handle_penalty_normal(0, table_current_stack[JWP] or 0) end else -- the current list is the contents of a hbox local npi, pm = Np.id, Np.met if npi == id_jglyph or (npi==id_pbox and pm) then local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm)) 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) local npi, pm = Np.id, Np.met if npi == id_jglyph or (npi==id_pbox and pm) then if not ihb_flag then local g = new_jfm_glue(pm, fast_find_char_class(par_indented, pm), 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) -- 1073741823: max_dimen Bp, widow_Bp, widow_Np = {}, {}, {first = nil} table_current_stack = ltjs.table_current_stack kanji_skip = node_new(id_glue) kanji_skip.spec = skip_table_to_spec('kanjiskip') set_attr(kanji_skip, attr_icflag, KANJI_SKIP) get_kanjiskip = (kanji_skip.spec.width == 1073741823) and get_kanjiskip_jfm or get_kanjiskip_normal xkanji_skip = node_new(id_glue) xkanji_skip.spec = skip_table_to_spec('xkanjiskip') set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP) get_xkanjiskip = (xkanji_skip.spec.width == 1073741823) 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, 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, 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, lpi, lps = head, 'boxbdd', head.id, head.subtype while lp and ((lpi==id_whatsit and lps~=sid_user) or ((lpi==id_hlist) and (lps==3))) do if (lpi==id_hlist) and (lps==3) then par_indented = 'parbdd' end lp=node_next(lp); lpi, lps = lp.id, lp.subtype 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(); local pid, pm = Np.id, Np.met -- 挿入部 if pid == id_jglyph then handle_np_jachar(mode) elseif pm then if pid==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