diff options
Diffstat (limited to 'Master/texmf-dist/tex/luatex/luatexja/ltj-ruby.lua')
| -rw-r--r-- | Master/texmf-dist/tex/luatex/luatexja/ltj-ruby.lua | 774 |
1 files changed, 774 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/luatex/luatexja/ltj-ruby.lua b/Master/texmf-dist/tex/luatex/luatexja/ltj-ruby.lua new file mode 100644 index 00000000000..a84256cd45f --- /dev/null +++ b/Master/texmf-dist/tex/luatex/luatexja/ltj-ruby.lua @@ -0,0 +1,774 @@ +-- +-- ltj-ruby.lua +-- +luatexbase.provides_module({ + name = 'luatexja.ruby', + 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 +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 + + 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 + +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 +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 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) + 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) + 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 + 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) + 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) + 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 + |