--- /dev/null
- date = '2014/03/19',
+--
+-- ltj-ruby.lua
+--
+luatexbase.provides_module({
+ name = 'luatexja.ruby',
- -- 未実装．これを使えば 2 回目以降の組版に 1 回目の情報が使える
++ date = '2014/04/02',
+ description = 'Ruby',
+})
+module('luatexja.ruby', package.seeall)
+local err, warn, info, log = luatexbase.errwarinf(_NAME)
+
+luatexja.load_module('stack'); local ltjs = luatexja.stack
+
+local Dnode = node.direct or node
+
+local nullfunc = function(n) return n end
+local to_node = (Dnode ~= node) and Dnode.tonode or nullfunc
+local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
+
+local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
+local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
+local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
+local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
+local getlist = (Dnode ~= node) and Dnode.getlist or function(n) return n.head end
+local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
+local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
+
+local node_new = Dnode.new
+local node_remove = luatexja.Dnode_remove -- Dnode.remove
+local node_next = (Dnode ~= node) and Dnode.getnext or node.next
+local node_copy, node_free, node_tail = Dnode.copy, Dnode.free, Dnode.tail
+local has_attr, set_attr = Dnode.has_attribute, Dnode.set_attribute
+local insert_before, insert_after = Dnode.insert_before, Dnode.insert_after
+
+local id_hlist = node.id('hlist')
+local id_vlist = node.id('vlist')
+local id_rule = node.id('rule')
+local id_whatsit = node.id('whatsit')
+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 sid_user = node.subtype('user_defined')
+local ltjs_get_stack_table = luatexja.stack.get_stack_table
+local id_pbox_w = 258 -- cluster which consists of a whatsit
+
+local attr_icflag = luatexbase.attributes['ltj@icflag']
+-- ルビ処理用の attribute は他のやつの流用なので注意！
+-- 進入許容量 (sp)
+local attr_ruby_maxprep = luatexbase.attributes['ltj@charclass']
+local attr_ruby_maxpostp = luatexbase.attributes['ltj@kcat0']
+local attr_ruby_maxmargin = luatexbase.attributes['ltj@kcat1']
+local attr_ruby_stretch = luatexbase.attributes['ltj@kcat2']
+local attr_ruby_mode = luatexbase.attributes['ltj@kcat3']
+local attr_ruby_id = luatexbase.attributes['ltj@kcat4'] -- uniq id
+local attr_ruby_intergap = luatexbase.attributes['ltj@kcat5']
+local attr_ruby = luatexbase.attributes['ltj@rubyattr']
+-- ルビ内部処理用，以下のようにノードによって使われ方が異なる
+-- * (whatsit) では JAglue 処理時に，
+-- 「2つ前のクラスタもルビ」 ==> そのルビクラスタの id
+-- otherwise ==> unset
+-- * (whatsit).value node ではルビ全角の値（sp単位）
+-- * 行分割で whatsit の前後に並ぶノードでは，「何番目のルビ関連ノード」か
+-- * (whatsit).value に続く整形済み vbox たちでは post_intrusion の値
+local cat_lp = luatexbase.catcodetables['latex-package']
+
+local round, floor = tex.round, math.floor
+local min, max = math.min, math.max
+
+luatexja.userid_table.RUBY_PRE = luatexbase.newuserwhatsitid('ruby_pre', 'luatexja')
+luatexja.userid_table.RUBY_POST = luatexbase.newuserwhatsitid('ruby_post', 'luatexja')
+local RUBY_PRE = luatexja.userid_table.RUBY_PRE
+local RUBY_POST = luatexja.userid_table.RUBY_POST
+
+----------------------------------------------------------------
+-- TeX interface 0
+----------------------------------------------------------------
+if Dnode ~= node then
+ function cpbox() return node_copy(Dnode.getbox(0)) end
+else
+ function cpbox() return node.copy(tex.box[0]) end
+end
+
+
+----------------------------------------------------------------
+-- 補助関数群 1
+----------------------------------------------------------------
+
+local function gauss(coef)
+ -- #coef 式，#coef 変数の連立1次方程式系を掃きだし法で解く．
+ local deg = #coef
+ for i = 1, deg do
+ if coef[i][i]==0 then
+ for j = i+1, deg do
+ if coef[j][i]~=0 then
+ coef[i], coef[j] = coef[j], coef[i]; break
+ end
+ end
+ end
+ for j = 1,deg do
+ local d = coef[i][i];
+ if j~=i then
+ local e = coef[j][i]
+ for k = 1, deg+1 do coef[j][k] = coef[j][k] - e*coef[i][k]/d end
+ else
+ for k = 1, deg+1 do coef[i][k] = coef[i][k]/d end
+ end
+ end
+ end
+end
+
++local function solve_1(coef)
++ local a, b, c = coef[1][4], coef[2][4], coef[3][4]
++ coef[1][4], coef[2][4], coef[3][4] = c-b, a+b-c, c-a
++ return coef
++end
++
++local function solve_2(coef)
++ local a, b, c, d, e = coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
++ coef[1][6], coef[2][6], coef[3][6], coef[4][6], coef[5][6]
++ = e-c, a+c-e, e-a-d, b+d-e, e-b
++ return coef
++end
++
++
+-- 実行回数 + ルビ中身 から uniq_id を作る関数
- gauss(coef) -- 掃きだし法で連立方程式形 coef を解く
+old_break_info = {} -- public, 前 run 時の分割情報
+local make_uniq_id
+do
+ local exec_count = 0
+ make_uniq_id = function (w)
+ exec_count = exec_count + 1
+ return exec_count
+ end
+end
+
+-- concatenation of boxes: reusing nodes
+-- ルビ組版が行われている段落/hboxでの設定が使われる．
+-- ルビ文字を格納しているボックスでの設定ではない！
+local function concat(f, b)
+ if f then
+ if b then
+ local h = getlist(f)
+ setfield(node_tail(h), 'next', getlist(b))
+ setfield(f, 'head', nil); node_free(f)
+ setfield(b, 'head', nil); node_free(b)
+ return Dnode.hpack(luatexja.jfmglue.main(h,false))
+ else
+ return f
+ end
+ elseif b then
+ return b
+ else
+ local h = node_new(id_hlist)
+ setfield(h, 'subtype', 0)
+ setfield(h, 'width', 0)
+ setfield(h, 'height', 0)
+ setfield(h, 'depth', 0)
+ setfield(h, 'glue_set', 0)
+ setfield(h, 'glue_order', 0)
+ setfield(h, 'head', nil)
+ return h
+ end
+end
+
+local function expand_3bits(num)
+ local t = {}; local a = num
+ for i = 1, 10 do
+ t[i] = a%8; a = floor(a/8)
+ end
+ return t
+end
+----------------------------------------------------------------
+-- 補助関数群 2
+----------------------------------------------------------------
+
+-- box の中身のノードは再利用される
+local enlarge
+do
+ local FROM_JFM = luatexja.icflag_table.FROM_JFM
+ local PROCESSED = luatexja.icflag_table.PROCESSED
+ local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
+ local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
+ local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
+ local XKANJI_SKIP_JFM= luatexja.icflag_table.XKANJI_SKIP_JFM
+ enlarge = function (box, new_width, pre, middle, post, prenw, postnw)
+ -- pre, middle, post: 伸縮比率
+ -- prenw, postnw: 前後の自然長 (sp)
+ local h = getlist(box);
+ local hh, hd = getfield(box, 'height'), getfield(box, 'depth')
+ local hx = h
+ while hx do
+ local hic = has_attr(hx, attr_icflag)
+ if (hic == KANJI_SKIP) or (hic == KANJI_SKIP_JFM)
+ or (hic == XKANJI_SKIP) or (hic == XKANJI_SKIP_JFM)
+ or ((hic<=FROM_JFM+2) and (hic>=FROM_JFM-2)) then
+ -- この 5 種類の空白をのばす
+ if getid(hx) == id_kern then
+ local k = node_new(id_glue)
+ local ks = node_new(id_glue_spec)
+ setfield(ks, 'width', getfield(hx, 'kern'))
+ setfield(ks, 'stretch_order', 2)
+ setfield(ks, 'stretch', round(middle*65536))
+ setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
+ setfield(k, 'subtype', 0); setfield(k, 'spec', ks)
+ h = insert_after(h, hx, k);
+ h = node_remove(h, hx); node_free(hx); hx = k
+ else -- glue
+ local old_spec = getfield(hx, 'spec')
+ local ks = node_copy(old_spec)
+ setfield(ks, 'stretch_order', 2)
+ setfield(ks, 'stretch', round(middle*65536))
+ setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
+ setfield(hx, 'spec', ks)
+ -- decrease old_spec's reference count
+ local b = node_new(id_glue)
+ setfield(b, 'spec', old_spec); node_free(b)
+ end
+ end
+ hx = node_next(hx)
+ end
+ -- 先頭の空白を挿入
+ local k = node_new(id_glue);
+ local ks = node_new(id_glue_spec)
+ setfield(ks, 'width', prenw)
+ setfield(ks, 'stretch_order', 2); setfield(ks, 'stretch', round(pre*65536))
+ setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
+ setfield(k, 'subtype', 0); setfield(k, 'spec', ks)
+ h = insert_before(h, h, k);
+ -- 末尾の空白を挿入
+ local k = node_new(id_glue);
+ local ks = node_new(id_glue_spec);
+ setfield(ks, 'width', postnw)
+ setfield(ks, 'stretch_order', 2); setfield(ks, 'stretch', round(post*65536))
+ setfield(ks, 'shrink_order', 0); setfield(ks, 'shrink', 0)
+ setfield(k, 'subtype', 0);setfield(k, 'spec', ks)
+ insert_after(h, node_tail(h), k);
+ -- hpack
+ setfield(box, 'head', nil); node_free(box)
+ box = Dnode.hpack(h, new_width, 'exactly')
+ setfield(box, 'height', hh)
+ setfield(box, 'depth', hd)
+ return box
+ end
+end
+
+
+----------------------------------------------------------------
+-- TeX interface
+----------------------------------------------------------------
+
+-- rtlr: ルビ部分のボックスたち r1, r2, ...
+-- rtlp: 親文字 のボックスたち p1, p2, ...
+local function texiface_low(rst, rtlr, rtlp)
+ local w = node_new(id_whatsit, sid_user)
+ setfield(w, 'type', 110); setfield(w, 'user_id', RUBY_PRE)
+ local wv = node_new(id_whatsit, sid_user)
+ setfield(w, 'value', to_node(wv))
+ setfield(wv, 'type', 100)
+ setfield(wv, 'value', floor(#rtlr))
+ set_attr(wv, attr_ruby, rst.rubyzw)
+ set_attr(wv, attr_ruby_maxmargin, rst.maxmargin)
+ set_attr(wv, attr_ruby_maxprep, rst.pre)
+ set_attr(wv, attr_ruby_maxpostp, rst.post)
+ set_attr(wv, attr_ruby_intergap, rst.intergap)
+ set_attr(wv, attr_ruby_stretch, rst.stretch)
+ set_attr(wv, attr_ruby_mode, rst.mode)
+ local n = wv
+ for i = 1, #rtlr do
+ _, n = insert_after(wv, n, rtlr[i])
+ _, n = insert_after(wv, n, rtlp[i])
+ end
+ -- w.value: (whatsit) .. r1 .. p1 .. r2 .. p2
+ Dnode.write(w); return w,wv
+end
+
+-- rst: table
+function texiface(rst, rtlr, rtlp)
+ if #rtlr ~= #rtlp then
+ for i=1, #rtlr do node_free(rtlr[i]) end
+ for i=1, #rtlp do node_free(rtlp[i]) end
+ luatexja.base.package_error('luatexja-ruby',
+ 'Group count mismatch between the ruby and\n' ..
+ 'the body (' .. #rtlr .. ' != ' .. #rtlp .. ').',
+ '')
+ else
+ local f = true
+ for i = 1,#rtlr do
+ if getfield(rtlr[i], 'width') > getfield(rtlp[i], 'width') then
+ f = false; break
+ end
+ end
+ if f then -- モノルビ * n
+ local r,p = {true}, {true}
+ for i = 1,#rtlr do
+ r[1] = rtlr[i]; p[1] = rtlp[i]; texiface_low(rst, r, p)
+ end
+ else
+ local w, wv = texiface_low(rst, rtlr, rtlp)
+ local id = make_uniq_id(w)
+ set_attr(wv, attr_ruby_id, id)
+ end
+ end
+end
+
+----------------------------------------------------------------
+-- pre_line_break
+----------------------------------------------------------------
+
+-- r, p の中身のノードは再利用される
+local function enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
+ -- r: ルビ部分の格納された box，p: 同，親文字
+ local rwidth = getfield(r, 'width')
+ local sumprot = rwidth - getfield(p, 'width') -- >0
+ local pre_intrusion, post_intrusion
+ if intmode == 0 then -- とりあえず組んでから決める
+ p = enlarge(p, rwidth, ppre, pmid, ppost, 0, 0)
+ pre_intrusion = min(mapre, round(ppre*getfield(p, 'glue_set')*65536))
+ post_intrusion = min(mapost, round(ppost*getfield(p, 'glue_set')*65536))
+ elseif intmode == 1 then
+ pre_intrusion = min(mapre, sumprot);
+ post_intrusion = min(mapost, max(sumprot-pre_intrusion, 0))
+ p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
+ elseif intmode == 2 then
+ post_intrusion = min(mapost, sumprot);
+ pre_intrusion = min(mapre, max(sumprot-post_intrusion, 0))
+ p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
+ else -- intmode == 3
+ local n = min(mapre, mapost)*2
+ if n < sumprot then
+ pre_intrusion = n/2; post_intrusion = n/2
+ else
+ pre_intrusion = floor(sumprot/2); post_intrusion = sumprot - pre_intrusion
+ end
+ p = enlarge(p, rwidth, ppre, pmid, ppost, pre_intrusion, post_intrusion)
+ pre_intrusion = min(mapre, pre_intrusion + round(ppre*getfield(p, 'glue_set')*65536))
+ post_intrusion = min(mapost, post_intrusion + round(ppost*getfield(p, 'glue_set')*65536))
+ end
+ setfield(r, 'shift', -pre_intrusion)
+ local rwidth = rwidth - pre_intrusion - post_intrusion
+ setfield(r, 'width', rwidth)
+ setfield(p, 'width', rwidth)
+ local ps = getfield(getlist(p), 'spec')
+ setfield(ps, 'width', getfield(ps, 'width') - pre_intrusion)
+ return r, p, post_intrusion
+end
+
+-- ルビボックスの生成（単一グループ）
+-- returned value: <new box>, <ruby width>, <post_intrusion>
+local max_margin
+local function new_ruby_box(r, p, ppre, pmid, ppost,
+ mapre, mapost, imode, rgap)
+ local post_intrusion = 0
+ local intmode = imode%4
+ local rpre, rmid, rpost, rsmash
+ imode = floor(imode/262144); rsmash = (imode%2 ==1)
+ imode = floor(imode/2); rpost = imode%8;
+ imode = (imode-rpost)/8; rmid = imode%8;
+ imode = (imode-rmid)/8; rpre = imode%8
+ if getfield(r, 'width') > getfield(p, 'width') then -- change the width of p
+ r, p, post_intrusion = enlarge_parent(r, p, ppre, pmid, ppost, mapre, mapost, intmode)
+ elseif getfield(r, 'width') < getfield(p, 'width') then -- change the width of r
+ r = enlarge(r, getfield(p, 'width'), rpre, rmid, rpost, 0, 0)
+ post_intrusion = 0
+ local need_repack = false
+ -- margin が大きくなりすぎた時の処理
+ if round(rpre*getfield(r, 'glue_set')*65536) > max_margin then
+ local ps = getfield(getlist(r), 'spec'); need_repack = true
+ setfield(ps, 'width', max_margin)
+ setfield(ps, 'stretch', 1) -- 全く伸縮しないのも困る
+ end
+ if round(rpost*getfield(r, 'glue_set')*65536) > max_margin then
+ local ps = getfield(node_tail(getlist(r)), 'spec'); need_repack = true
+ setfield(ps, 'width', max_margin)
+ setfield(ps, 'stretch', 1) -- 全く伸縮しないのも困る
+ end
+ if need_repack then
+ local rt = r
+ r = Dnode.hpack(getlist(r), getfield(r, 'width'), 'exactly')
+ setfield(rt, 'head', nil); node_free(rt);
+ end
+ end
+ local a, k = node_new(id_rule), node_new(id_kern)
+ setfield(a, 'width', 0); setfield(a, 'height', 0)
+ setfield(a, 'depth', 0); setfield(k, 'kern', rgap)
+ insert_after(r, r, a); insert_after(r, a, k);
+ insert_after(r, k, p); setfield(p, 'next', nil)
+ a = Dnode.vpack(r); setfield(a, 'shift', 0)
+ set_attr(a, attr_ruby, post_intrusion)
+ if rsmash or getfield(a, 'height')<getfield(p, 'height') then
+ local k = node_new(id_kern)
+ setfield(k, 'kern', -getfield(a, 'height')+getfield(p, 'height'))
+ setfield(a, 'head', k); insert_before(r, r, k)
+ setfield(a, 'height', getfield(p, 'height'))
+ end
+
+ return a, getfield(r, 'width'), post_intrusion
+end
+
+
+-- High-level routine in pre_linebreak_filter
+local post_intrusion_backup
+local max_allow_pre, max_allow_post
+
+
+-- 中付き熟語ルビ，cmp containers
+-- 「文字の構成を考えた」やつはどうしよう
+local function pre_low_cal_box(w, cmp)
+ local rb = {}
+ local pb = {}
+ local kf = {}
+ -- kf[i] : container 1--i からなる行末形
+ -- kf[cmp+i] : container i--cmp からなる行頭形
+ -- kf[2cmp+1] : 行中形
+ local wv = getfield(w, 'value')
+ local mdt -- nt*: node temp
+ local coef = {} -- 連立一次方程式の拡大係数行列
+ local rtb = expand_3bits(has_attr(wv, attr_ruby_stretch))
+ local rgap = has_attr(wv, attr_ruby_intergap)
+ local intmode = floor(has_attr(wv, attr_ruby_mode)/4)
+
+ -- node list 展開・行末形の計算
+ local nt, nta, ntb = wv, nil, nil -- nt*: node temp
+ for i = 1, cmp do
+ nt = node_next(nt); rb[i] = nt; nta = concat(nta, node_copy(nt))
+ nt = node_next(nt); pb[i] = nt; ntb = concat(ntb, node_copy(nt))
+ coef[i] = {}
+ for j = 1, 2*i do coef[i][j] = 1 end
+ for j = 2*i+1, 2*cmp+1 do coef[i][j] = 0 end
+ kf[i], coef[i][2*cmp+2]
+ = new_ruby_box(node_copy(nta), node_copy(ntb),
+ rtb[6], rtb[5], rtb[4], max_allow_pre, 0, intmode, rgap)
+ end
+ node_free(nta); node_free(ntb)
+
+ -- 行頭形の計算
+ local nta, ntb = nil, nil
+ for i = cmp,1,-1 do
+ coef[cmp+i] = {}
+ for j = 1, 2*i-1 do coef[cmp+i][j] = 0 end
+ for j = 2*i, 2*cmp+1 do coef[cmp+i][j] = 1 end
+ nta = concat(node_copy(rb[i]), nta); ntb = concat(node_copy(pb[i]), ntb)
+ kf[cmp+i], coef[cmp+i][2*cmp+2]
+ = new_ruby_box(node_copy(nta), node_copy(ntb),
+ rtb[9], rtb[8], rtb[7], 0, max_allow_post, intmode, rgap)
+ end
+
+ -- ここで，nta, ntb には全 container を連結した box が入っているので
+ -- それを使って行中形を計算する．
+ coef[2*cmp+1] = {}
+ for j = 1, 2*cmp+1 do coef[2*cmp+1][j] = 1 end
+ kf[2*cmp+1], coef[2*cmp+1][2*cmp+2], post_intrusion_backup
+ = new_ruby_box(nta, ntb, rtb[3], rtb[2], rtb[1],
+ max_allow_pre, max_allow_post, intmode, rgap)
+
+ -- w.value の node list 更新．
+ local nt = wv
+ Dnode.flush_list(node_next(wv))
+ for i = 1, 2*cmp+1 do setfield(nt, 'next', kf[i]); nt = kf[i] end
+
-
- local function first_whatsit(n) -- n 以後で最初の whatsit
- for h in Dnode.traverse_id(id_whatsit, n) do
- return h
++ if cmp==1 then solve_1(coef)
++ elseif cmp==2 then solve_2(coef)
++ else
++ gauss(coef) -- 掃きだし法で連立方程式形 coef を解く
++ end
+ return coef
+end
+
- return nil
++local first_whatsit
++do
++ local traverse_id = Dnode.traverse_id
++ function first_whatsit(n) -- n 以後で最初の whatsit
++ for h in traverse_id(id_whatsit, n) do
++ return h
++ end
++ return nil
+ end
- local nv = getfield(n, 'value')
+end
+
+-- ノード追加
+local function pre_low_app_node(head, w, cmp, coef, ht, dp)
+ -- メインの node list 更新
+ local nt, ntb = node_new(id_glue), node_new(id_glue_spec)
+ setfield(ntb, 'width', coef[1][2*cmp+2])
+ setfield(ntb, 'stretch_order', 0); setfield(ntb, 'stretch', 0)
+ setfield(ntb, 'shrink_order', 0); setfield(ntb, 'shrink', 0)
+ setfield(nt, 'subtype', 0); setfield(nt, 'spec', ntb)
+ set_attr(nt, attr_ruby, 1); set_attr(w, attr_ruby, 2)
+ head = insert_before(head, w, nt)
+ nt = w
+ for i = 1, cmp do
+ -- rule
+ local nta = node_new(id_rule);
+ setfield(nta, 'width', coef[i*2][2*cmp+2])
+ setfield(nta, 'height', ht); setfield(nta, 'depth', dp)
+ setfield(nta, 'subtype', 0)
+ insert_after(head, nt, nta)
+ set_attr(nta, attr_ruby, 2*i+1)
+ -- glue
+ nt = node_new(id_glue)
+ local ntb = node_new(id_glue_spec);
+ setfield(ntb, 'width', coef[i*2+1][2*cmp+2])
+ setfield(ntb, 'stretch_order', 0); setfield(ntb, 'stretch', 0)
+ setfield(ntb, 'shrink_order', 0); setfield(ntb, 'shrink', 0)
+ setfield(nt, 'subtype', 0); setfield(nt, 'spec', ntb)
+ set_attr(nt, attr_ruby, 2*i+2)
+ insert_after(head, nta, nt)
+ end
+ tex.setattribute('global', attr_ruby, -0x7FFFFFFF)
+ setfield(w, 'user_id', RUBY_POST)
+ return head, first_whatsit(node_next(nt))
+end
+
+local function pre_high(ahead)
+ if not ahead then return ahead end
+ local head = to_direct(ahead)
+ post_intrusion_backup = 0
+ local n = first_whatsit(head)
+ while n do
+ if getsubtype(n) == sid_user and getfield(n, 'user_id') == RUBY_PRE then
- local i = (((hai == id_glue and getsubtype(ha)==0)
- or (hai == id_rule and getsubtype(ha)==0)
- or (hai == id_whatsit and getsubtype(ha)==sid_user
- and getfield(ha, 'user_id')==RUBY_POST))
- and has_attr(ha, attr_ruby)) or 0
- if i==1 then
++ local nv = getfield(n, 'value')
+ max_allow_pre = has_attr(nv, attr_ruby_maxprep) or 0
+ local atr = has_attr(n, attr_ruby) or 0
+ if max_allow_pre < 0 then
+ if atr>0 then
+ -- 直前のルビで intrusion がおこる可能性あり．
+ -- 前 run のデータが残っていればそれを使用，
+ -- そうでなければ行中形のデータを利用する
+ local op = old_break_info[atr] or post_intrusion_backup
+ max_allow_pre = max(0, -max_allow_pre - op)
+ else
+ max_allow_pre = -max_allow_pre
+ end
+ end
+ post_intrusion_backup = 0
+ max_allow_post = has_attr(nv, attr_ruby_maxpostp) or 0
+ max_margin = has_attr(nv, attr_ruby_maxmargin) or 0
+ local coef = pre_low_cal_box(n, getfield(nv, 'value'))
+ local s = node_tail(nv) --ルビ文字
+ head, n = pre_low_app_node(
+ head, n, getfield(nv, 'value'), coef,
+ getfield(s, 'height'), getfield(s, 'depth')
+ )
+ else
+ n = first_whatsit(node_next(n))
+ end
+ end
+ return to_node(head)
+end
+luatexbase.add_to_callback('pre_linebreak_filter', pre_high, 'ltj.ruby.pre', 100)
+luatexbase.add_to_callback('hpack_filter', pre_high, 'ltj.ruby.pre', 100)
+
+----------------------------------------------------------------
+-- post_line_break
+----------------------------------------------------------------
+local post_lown
+do
+ local function write_aux(wv, num)
+ local id = has_attr(wv, attr_ruby_id)
+ if id>0 then
+ tex.sprint(cat_lp,
+ '\\write\\@mainaux{\\string\\directlua{luatexja.ruby.old_break_info['
+ .. tostring(id) .. ']=' .. num
+ .. '}}')
+ end
+ end
+
+ post_lown = function (rs, rw, cmp, ch)
+ -- ch: the head of `current' hlist
+ if #rs ==0 or not rw then return ch end
+ local hn = has_attr(rs[1], attr_ruby)
+ local fn = has_attr(rs[#rs], attr_ruby)
+ local wv = getfield(rw, 'value')
+ if hn==1 then
+ if fn==2*cmp+2 then
+ local hn = node_tail(wv)
+ node_remove(wv, hn)
+ insert_after(ch, rs[#rs], hn)
+ set_attr(hn, attr_icflag, PROCESSED)
+ write_aux(wv, has_attr(hn, attr_ruby))-- 行中形
+ else
+ local deg, hn = (fn-1)/2, wv
+ for i = 1, deg do hn = node_next(hn) end;
+ node_remove(wv, hn)
+ setfield(hn, 'next', nil)
+ insert_after(ch, rs[#rs], hn)
+ set_attr(hn, attr_icflag, PROCESSED)
+ write_aux(wv, has_attr(hn, attr_ruby))
+ end
+ else
+ local deg, hn = max((hn-1)/2,2), wv
+ for i = 1, cmp+deg-1 do hn = node_next(hn) end
+ -- -1 is needed except the case hn = 3,
+ -- because a ending-line form is removed already from the list
+ node_remove(wv, hn); setfield(hn, 'next', nil)
+ insert_after(ch, rs[#rs], hn)
+ set_attr(hn, attr_icflag, PROCESSED)
+ if fn == 2*cmp-1 then
+ write_aux(wv, has_attr(hn, attr_ruby))
+ end
+ end
+ for i = 1,#rs do
+ local ri = rs[i]
+ ch = node_remove(ch, ri); node_free(ri);
+ end
+ -- cleanup
+ if fn >= 2*cmp+1 then node_free(rw) end
+ return ch;
+ end
+end
+
+local function post_high_break(head)
+ local rs = {} -- rs: sequence of ruby_nodes,
+ local rw = nil -- rw: main whatsit
+ local cmp = -2 -- dummy
+ for h in Dnode.traverse_id(id_hlist, to_direct(head)) do
+ for i = 1, #rs do rs[i] = nil end
+ local ha = getlist(h)
+ while ha do
+ local hai = getid(ha)
- elseif i>=3 then
- rs[#rs+1] = ha; ha = node_next(ha)
++ local i = ((hai == id_glue and getsubtype(ha)==0)
++ or (hai == id_rule and getsubtype(ha)==0)
++ or (hai == id_whatsit and getsubtype(ha)==sid_user
++ and getfield(ha, 'user_id', RUBY_POST)))
++ and has_attr(ha, attr_ruby) or 0
++ if i==0 then
++ ha = node_next(ha)
++ elseif i==1 then
+ setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
+ for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
+ rs[1], rw = ha, nil; ha = node_next(ha)
- else
- ha = node_next(ha)
+ elseif i==2 then
+ rw = ha
+ cmp = getfield(getfield(rw, 'value'), 'value')
+ local hb, hc = node_remove(getlist(h), rw)
+ setfield(h, 'head', hb); ha = hc
- local i = (((hai == id_glue and getsubtype(ha)==0)
- or (hai == id_rule and getsubtype(ha)==0)
- or (hai == id_whatsit and getsubtype(ha)==sid_user
- and getfield(ha, 'user_id', RUBY_POST)))
- and has_attr(ha, attr_ruby)) or 0
- if i==1 then
++ else -- i>=3
++ rs[#rs+1] = ha; ha = node_next(ha)
+ end
+ end
+ setfield(h, 'head', post_lown(rs, rw, cmp, getlist(h)))
+ end
+ return head
+end
+
+local function post_high_hbox(ahead)
+ local ha = to_direct(ahead); local head = ha
+ local rs = {}; -- rs: sequence of ruby_nodes,
+ local rw = nil; -- rw: main whatsit
+ local cmp
+ while ha do
+ local hai = getid(ha)
- elseif i>=3 then
- rs[#rs+1] = ha; ha = node_next(ha)
++ local i = ((hai == id_glue and getsubtype(ha)==0)
++ or (hai == id_rule and getsubtype(ha)==0)
++ or (hai == id_whatsit and getsubtype(ha)==sid_user
++ and getfield(ha, 'user_id', RUBY_POST)))
++ and has_attr(ha, attr_ruby) or 0
++ if i==0 then
++ ha = node_next(ha)
++ elseif i==1 then
+ head = post_lown(rs, rw, cmp, head)
+ for i = 2, #rs do rs[i] = nil end -- rs[1] is set by the next statement
+ rs[1], rw = ha, nil; ha = node_next(ha)
- else
- ha = node_next(ha)
+ elseif i==2 then
+ rw = ha
+ cmp = getfield(getfield(rw, 'value'), 'value')
+ head, ha = node_remove(head, rw)
++ else -- i >= 3
++ rs[#rs+1] = ha; ha = node_next(ha)
+ end
+ end
+ return to_node(post_lown(rs, rw, cmp, head))
+end
+
+luatexbase.add_to_callback('post_linebreak_filter', post_high_break, 'ltj.ruby.post_break', 100)
+luatexbase.add_to_callback('hpack_filter', post_high_hbox, 'ltj.ruby.post_hbox', 101)
+
+
+----------------------------------------------------------------
+-- for jfmglue callbacks
+----------------------------------------------------------------
+do
+ local RIPRE = luatexja.stack_table_index.RIPRE
+ local function whatsit_callback(Np, lp, Nq, bsl)
+ if Np.nuc then return Np
+ elseif getfield(lp, 'user_id') == RUBY_PRE then
+ Np.first, Np.nuc, Np.last = lp, lp, lp
+ local lpv = getfield(lp, 'value')
+ local x = node_next(node_next(lpv))
+ Np.last_char = luatexja.jfmglue.check_box_high(Np, getlist(x), nil)
+ if Nq.id ~=id_pbox_w then
+ if type(Nq.char)=='number' then
+ -- Nq is a JAchar
+ if has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
+ local p = round((ltjs.table_current_stack[RIPRE + Nq.char] or 0)
+ *has_attr(lpv, attr_ruby))
+ if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
+ p = 0
+ end
+ set_attr(lpv, attr_ruby_maxprep, -p)
+ end
+ if Nq.prev_ruby then
+ set_attr(lp, attr_ruby, Nq.prev_ruby)
+ end
+ elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
+ if Nq.char == 'parbdd' then
+ local p = round((ltjs.table_current_stack[RIPRE-1] or 0)
+ *has_attr(lpv, attr_ruby))
+ p = min(p, Nq.width)
+ if has_attr(lpv, attr_ruby_mode)%2 == 0 then -- intrusion 無効
+ p = 0
+ end
+ set_attr(lpv, attr_ruby_maxprep, p)
+ else
+ set_attr(lpv, attr_ruby_maxprep, 0)
+ end
+ end
+ elseif has_attr(lpv, attr_ruby_maxprep) < 0 then -- auto
+ set_attr(lpv, attr_ruby_maxprep, 0)
+ end
+ return Np
+ end
+ end
+ luatexbase.add_to_callback("luatexja.jfmglue.whatsit_getinfo", whatsit_callback,
+ "luatexja.ruby.np_info", 1)
+end
+
+do
+ local RIPOST = luatexja.stack_table_index.RIPOST
+ local function whatsit_after_callback(s, Nq, Np, bsl)
+ if not s and getfield(Nq.nuc, 'user_id') == RUBY_PRE then
+ local nqnv = getfield(Nq.nuc, 'value')
+ local x = node_next(node_next(nqnv))
+ for i = 2, getfield(nqnv, 'value') do x = node_next(node_next(x)) end
+ Nq.last_char = luatexja.jfmglue.check_box_high(Nq, getlist(x), nil)
+ luatexja.jfmglue.after_hlist(Nq)
+ if Np and Np.id ~=id_pbox_w and type(Np.char)=='number' then
+ -- Np is a JAchar
+ local rm = has_attr(nqnv, attr_ruby_mode)
+ if has_attr(nqnv, attr_ruby_maxpostp) < 0 then -- auto
+ local p = round((ltjs.table_current_stack[RIPOST + Np.char] or 0)
+ *has_attr(nqnv, attr_ruby))
+ if rm%2 == 0 then -- intrusion 無効
+ p = 0
+ end
+ if rm%4 >= 2 then
+ local q = has_attr(nqnv, attr_ruby_maxprep)
+ if q < p then p = q
+ elseif q > p then
+ set_attr(nqnv, attr_ruby_maxprep, p)
+ end
+ end
+ set_attr(nqnv, attr_ruby_maxpostp, p)
+ end
+ Np.prev_ruby = has_attr(getfield(Nq.nuc, 'value'), attr_ruby_id)
+ -- 前のクラスタがルビであったことのフラグ
+ else -- 直前が文字以外
+ local nqnv = getfield(Nq.nuc, 'value')
+ if has_attr(nqnv, attr_ruby_maxpostp) < 0 then -- auto
+ set_attr(nqnv, attr_ruby_maxpostp, 0)
+ if has_attr(nqnv, attr_ruby_mode)%4 >= 2 then
+ set_attr(nqnv, attr_ruby_maxprep, 0)
+ end
+ end
+ end
+ return true
+ else
+ return s
+ end
+ end
+ luatexbase.add_to_callback("luatexja.jfmglue.whatsit_after", whatsit_after_callback,
+ "luatexja.ruby.np_info_after", 1)
+end
+
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