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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/luatex/generic/luatexja/src/ltj-jfmglue.lua
Initial commit
Diffstat (limited to 'macros/luatex/generic/luatexja/src/ltj-jfmglue.lua')
-rw-r--r--macros/luatex/generic/luatexja/src/ltj-jfmglue.lua1375
1 files changed, 1375 insertions, 0 deletions
diff --git a/macros/luatex/generic/luatexja/src/ltj-jfmglue.lua b/macros/luatex/generic/luatexja/src/ltj-jfmglue.lua
new file mode 100644
index 0000000000..f94b028452
--- /dev/null
+++ b/macros/luatex/generic/luatexja/src/ltj-jfmglue.lua
@@ -0,0 +1,1375 @@
+--
+-- luatexja/ltj-jfmglue.lua
+--
+luatexbase.provides_module({
+ name = 'luatexja.jfmglue',
+ date = '2019/07/26',
+ description = 'Insertion process of JFM glues, [x]kanjiskip and others',
+})
+luatexja.jfmglue = luatexja.jfmglue or {}
+
+luatexja.load_module('base'); local ltjb = luatexja.base
+luatexja.load_module('stack'); local ltjs = luatexja.stack
+luatexja.load_module('jfont'); local ltjf = luatexja.jfont
+luatexja.load_module('direction'); local ltjd = luatexja.direction
+luatexja.load_module('setwidth'); local ltjw = luatexja.setwidth
+local pairs = pairs
+
+--local to_node = node.direct.tonode
+--local to_direct = node.direct.todirect
+
+local setfield = node.direct.setfield
+local setglue = luatexja.setglue
+local getfield = node.direct.getfield
+local getid = node.direct.getid
+local getfont = node.direct.getfont
+local getlist = node.direct.getlist
+local getchar = node.direct.getchar
+local getsubtype = node.direct.getsubtype
+local if_lang_ja
+do
+ local lang_ja = luatexja.lang_ja
+ local getlang = node.direct.getlang
+ if_lang_ja = getlang
+ and function (n) return getlang(n)==lang_ja end
+ or function (n) return getfield(n,'lang')==lang_ja end
+end
+
+local has_attr = node.direct.has_attribute
+local set_attr = node.direct.set_attribute
+local insert_before = node.direct.insert_before
+local insert_after = node.direct.insert_after
+local node_next = node.direct.getnext
+local ltjd_make_dir_whatsit = ltjd.make_dir_whatsit
+local ltjf_font_metric_table = ltjf.font_metric_table
+local ltjf_find_char_class = ltjf.find_char_class
+local node_new = node.direct.new
+local node_copy = node.direct.copy
+local node_tail = node.direct.tail
+local node_free = node.direct.free
+local node_remove = node.direct.remove
+
+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_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 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 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 attr_icflag = luatexbase.attributes['ltj@icflag']
+local kanji_skip
+local xkanji_skip
+local table_current_stack
+local list_dir
+local capsule_glyph
+local tex_dir
+local attr_ablshift
+local set_np_xspc_jachar, set_np_xspc_alchar
+local set_np_xspc_jachar_hbox
+
+local ltjs_orig_char_table = ltjs.orig_char_table
+
+local function get_attr_icflag(p)
+ return (has_attr(p, attr_icflag) or 0)%PROCESSED_BEGIN_FLAG
+end
+
+-------------------- Helper functions
+
+-- 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 slow_find_char_class
+do
+ local start_time_measure = ltjb.start_time_measure
+ local stop_time_measure = ltjb.stop_time_measure
+ slow_find_char_class = function (c, m, oc)
+ local cls = ltjf_find_char_class(oc, m)
+ if oc~=c and c and cls==0 then
+ return ltjf_find_char_class(c, m)
+ else
+ return cls
+ end
+ end
+end
+
+local function skip_table_to_glue(n)
+ local g, st = node_new(id_glue), ltjs.fast_get_stack_skip(n)
+ setglue(g, st.width, st.stretch, st.shrink, st.stretch_order, st.shrink_order)
+ return g, (st.width==1073741823)
+end
+
+
+-- penalty 値の計算
+local add_penalty
+do
+local setpenalty = node.direct.setpenalty or function(n, a) setfield(n,'penalty',a) end
+local getpenalty = node.direct.getpenalty or function(n) return getfield(n,'penalty') end
+function add_penalty(p,e)
+ local pp = getpenalty(p)
+ if (pp>-10000) and (pp<10000) then
+ if e>=10000 then setpenalty(p, 10000)
+ elseif e<=-10000 then setpenalty(p, -10000)
+ else
+ pp = pp + e
+ if pp>=10000 then setpenalty(p, 10000)
+ elseif pp<=-10000 then setpenalty(p, -10000)
+ else setpenalty(p, pp) end
+ end
+ end
+end
+end
+
+-- 「異なる JFM」の間の調整方法
+luatexja.jfmglue.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)/2 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 non_ihb_flag -- JFM グルー挿入抑止用 flag
+-- false: \inhibitglue 指定時 true: それ以外
+
+-------------------- hlist 内の文字の検索
+
+local first_char, last_char, find_first_char
+local check_box_high
+do
+local ltjd_glyph_from_packed = ltjd.glyph_from_packed
+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; last_char = nil
+ return true
+ end
+ while p and p~=box_end do
+ local pid = getid(p)
+ if pid==id_kern and getsubtype(p)==2 then
+ p = node_next(node_next(node_next(p))); pid = getid(p) -- 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 getid(p)~=id_glyph
+ pid = getid(p) -- p must be non-nil
+ end
+ if pid==id_kern then
+ local pa = get_attr_icflag(p)
+ if pa==IC_PROCESSED then
+ -- do nothing
+ elseif getsubtype(p)==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
+ find_first_char = false; last_char = nil
+ end
+ elseif pid==id_hlist then
+ if PACKED == get_attr_icflag(p) then
+ local s = ltjd_glyph_from_packed(p)
+ if find_first_char then
+ first_char = s; find_first_char = false
+ end
+ last_char = s; found_visible_node = true
+ else
+ if getfield(p, 'shift')==0 then
+ last_char = nil
+ if check_box(getlist(p), nil) then found_visible_node = true end
+ find_first_char = false
+ else
+ find_first_char = false; last_char = nil
+ 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 pid==id_rule and get_attr_icflag(p)==PACKED then
+ -- do nothing
+ 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
+ find_first_char = false; last_char = nil
+ end
+ p = node_next(p)
+ end
+ return found_visible_node
+end
+
+check_box_high = function (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 getid(first_char)==id_glyph then
+ if if_lang_ja(first_char) then
+ set_np_xspc_jachar_hbox(Nx, first_char)
+ else
+ set_np_xspc_alchar(Nx, getchar(first_char),first_char, 1)
+ end
+ else -- math_node
+ set_np_xspc_alchar(Nx, -1,first_char)
+ end
+ end
+ end
+ return last_char
+end
+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
+local calc_np
+do -- 001 -----------------------------------------------
+
+local traverse = node.direct.traverse
+local function check_next_ickern(lp)
+ local lx = Np.nuc
+ while lp and getid(lp) == id_kern and ( getsubtype(lp)==0 or
+ getsubtype(lp)==3 or ITALIC == get_attr_icflag(lp)) do
+ set_attr(lp, attr_icflag, IC_PROCESSED);
+ lx, lp = lp, node_next(lp)
+ end
+ Np.last = lx; return lp
+end
+
+local function calc_np_pbox(lp, last)
+ local first, nc = (not Np.first), nil
+ --local lpa = get_attr_icflag(lp)==PACKED and PACKED or KINSOKU -- KINSOKU: dummy
+ local lpa = get_attr_icflag(lp)
+ Np.first = Np.first or lp; Np.id = id_pbox
+ set_attr(lp, attr_icflag, get_attr_icflag(lp));
+ while lp ~=last and (lpa>=PACKED) and (lpa<BOXBDD) do
+ local lpi = getid(lp)
+ if lpa==PACKED then
+ if lpi==id_rule then lp = node_next(lp) end
+ nc, lp = lp, node_next(lp)
+ elseif lpi==id_hlist or lpi==id_vlist then
+ head, lp, nc = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm pbox')
+ Np.first = first and nc or Np.first
+ else
+ nc, lp = lp, node_next(lp)
+ end
+ first, lpa = false, (lp and has_attr(lp, attr_icflag) or 0)
+ -- get_attr_icflag() ではいけない!
+ end
+ Np.nuc = nc
+ lp = check_next_ickern(lp)
+ Np.last_char = check_box_high(Np, Np.first, lp)
+ return lp
+end
+
+local calc_np_aux_glyph_common
+do -- 002 ---------------------------------------
+ local min, max = math.min, math.max
+ local getwhd = node.direct.getwhd
+ local attr_jchar_class = luatexbase.attributes['ltj@charclass']
+ local attr_jchar_code = luatexbase.attributes['ltj@charcode']
+ local identifiers = fonts.hashes.identifiers
+ local function calc_np_notdef(lp)
+ local ident = identifiers[getfont(lp)]
+ if not ident.descriptions[getchar(lp)] then
+ local ln = node_next(lp)
+ if (ident.shared and ident.shared.features and ident.shared.features.notdef)
+ and ln and getid(ln)==id_glyph then
+ set_attr(lp, attr_icflag, PROCESSED)
+ set_attr(ln, attr_jchar_code, has_attr(lp, attr_jchar_code) or getchar(lp))
+ set_attr(ln, attr_jchar_class, has_attr(lp, attr_jchar_class) or 0)
+ Np.nuc, lp = ln, ln
+ end
+ end
+ return lp
+ end
+function calc_np_aux_glyph_common(lp, acc_flag)
+ Np.nuc, Np.first = lp, (Np.first or lp)
+ if if_lang_ja(lp) then -- JAchar
+ Np.id = id_jglyph
+ local m, mc, cls = set_np_xspc_jachar(Np, lp)
+ local npi, npf
+ local w, h, d = getwhd(lp)
+ if w==0 and h==0 and d==0 then lp = calc_np_notdef(lp) end
+ lp, head, npi, npf = capsule_glyph(lp, m, mc[cls], head, tex_dir)
+ Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
+ Np.nuc = npi
+ return true, check_next_ickern(lp);
+ else --ALchar
+ Np.id = id_glyph
+ set_np_xspc_alchar(Np, getchar(lp), lp, 1)
+ -- loop
+ local first_glyph, last_glyph = lp
+ set_attr(lp, attr_icflag, PROCESSED); Np.last = lp
+ local y_adjust = has_attr(lp,attr_ablshift) or 0
+ local node_depth = getfield(lp, 'depth') + min(y_adjust, 0)
+ local adj_depth = (y_adjust>0) and (getfield(lp, 'depth') + y_adjust) or 0
+ setfield(lp, 'yoffset', getfield(lp, 'yoffset') - y_adjust)
+ lp = node_next(lp)
+ for lx in traverse(lp) do
+ local lai = get_attr_icflag(lx)
+ if lx==last or lai>=PACKED then
+ lp=lx; break
+ else
+ local lid = getid(lx)
+ if lid==id_glyph and not if_lang_ja(lx) then
+ -- 欧文文字
+ last_glyph = lx; set_attr(lx, attr_icflag, PROCESSED); Np.last = lx
+ y_adjust = has_attr(lx,attr_ablshift) or 0
+ node_depth = max(getfield(lx, 'depth') + min(y_adjust, 0), node_depth)
+ adj_depth = (y_adjust>0) and max(getfield(lx, 'depth') + y_adjust, adj_depth) or adj_depth
+ setfield(lx, 'yoffset', getfield(lx, 'yoffset') - y_adjust)
+ elseif lid==id_kern then
+ local ls = getsubtype(lx)
+ if ls==2 then -- アクセント用の kern
+ set_attr(lx, attr_icflag, PROCESSED)
+ lx = node_next(lx) -- lx: アクセント本体
+ if getid(lx)==id_glyph then
+ setfield(lx, 'yoffset', getfield(lx, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
+ else -- アクセントは上下にシフトされている
+ setfield(lx, 'shift', getfield(lx, 'shift') + (has_attr(lx,attr_ablshift) or 0))
+ end
+ lx = node_next(node_next(lx))
+ elseif ls==0 then
+ Np.last = lx
+ elseif (ls==3) or (lai==ITALIC) then
+ Np.last = lx; set_attr(lx, attr_icflag, IC_PROCESSED)
+ else
+ lp=lx; break
+ end
+ else
+ lp=lx; break
+ end
+ end
+ end
+ local r
+ if adj_depth>node_depth then
+ r = node_new(id_rule,3)
+ setfield(r, 'width', 0); setfield(r, 'height', 0)
+ setfield(r, 'depth',adj_depth); setfield(r, 'dir', tex_dir)
+ set_attr(r, attr_icflag, PROCESSED)
+ end
+ if last_glyph then
+ Np.last_char = last_glyph
+ if r then insert_after(head, first_glyph, r) end
+ else
+ local npn = Np.nuc
+ Np.last_char = npn
+ if r then
+ local nf, nc = getfont(npn), getchar(npn)
+ local ct = (font.getfont(nf) or font.fonts[nf] ).characters[nc]
+ if not ct then -- variation selector
+ node_free(r)
+ elseif (ct.left_protruding or 0) == 0 then
+ head = insert_before(head, npn, r)
+ Np.first = acc_flag and Np.first or ((Np.first==npn) and r or npn)
+ elseif (ct.right_protruding or 0) == 0 then
+ insert_after(head, npn, r); Np.last, lp = r, r
+ else
+ ltjb.package_warning_no_line(
+ 'luatexja',
+ 'Check depth of glyph node ' .. tostring(npn) .. '(font=' .. nf
+ .. ', char=' .. nc .. '), because its \\lpcode is ' .. tostring(ct.left_protruding)
+ .. ' and its \\rpcode is ' .. tostring(ct.right_protruding)
+ ); node_free(r)
+ end
+ end
+ end
+ return true, lp
+ end
+end
+end -- 002 ---------------------------------------
+local calc_np_auxtable
+do -- 002 ---------------------------------------
+local ltjw_apply_ashift_math = ltjw.apply_ashift_math
+local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
+local node_end_of_math = node.direct.end_of_math
+local dir_tate = luatexja.dir_table.dir_tate
+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')
+calc_np_auxtable = {
+ [id_glyph] = calc_np_aux_glyph_common,
+ [id_hlist] = function(lp)
+ local op, flag
+ head, lp, op, flag = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm hlist')
+ set_attr(op, attr_icflag, PROCESSED)
+ Np.first = Np.first or op; Np.last = op; Np.nuc = op;
+ if (flag or getfield(op, 'shift')~=0) then
+ Np.id = id_box_like
+ else
+ Np.id = id_hlist
+ Np.last_char = check_box_high(Np, getlist(op), nil)
+ end
+ return true, lp
+ end,
+ [id_vlist] = function(lp)
+ local op
+ head, lp, op = ltjd_make_dir_whatsit(head, lp, list_dir, 'jfm:' .. getid(lp))
+ Np.first = Np.first or op; Np.last = op; Np.nuc = op;
+ Np.id = id_box_like;
+ return true, lp
+ end,
+ box_like = function(lp)
+ Np.first = Np.first or lp; Np.last = lp; Np.nuc = lp;
+ Np.id = id_box_like;
+ return true, node_next(lp)
+ end,
+ [id_whatsit] = function(lp)
+ local lps = getsubtype(lp)
+ if lps==sid_user then
+ if getfield(lp, 'user_id')==luatexja.userid_table.IHB then
+ local lq = node_next(lp);
+ head = node_remove(head, lp); node_free(lp); non_ihb_flag = false
+ return false, lq;
+ elseif getfield(lp, 'user_id')==luatexja.userid_table.JA_AL_BDD then
+ local lq = node_next(lp);
+ head = node_remove(head, lp); node_free(lp)
+ return false, lq;
+ else
+ set_attr(lp, attr_icflag, PROCESSED)
+ luatexbase.call_callback("luatexja.jfmglue.whatsit_getinfo",
+ Np, lp, Nq)
+ if Np.nuc then
+ Np.id = id_pbox_w; Np.first = Np.nuc; Np.last = Np.nuc;
+ return true, node_next(lp)
+ else
+ return false, node_next(lp)
+ end
+ end
+ else
+ -- we do special treatment for these whatsit nodes.
+ if lps == sid_start_link or lps == sid_start_thread then
+ Np.first = lp
+ elseif lps == sid_end_link or lps == sid_end_thread then
+ Np.first, Nq.last = nil, lp;
+ end
+ set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+ end
+ end,
+ [id_math] = function(lp)
+ Np.first, Np.nuc = (Np.first or lp), lp;
+ set_attr(lp, attr_icflag, PROCESSED)
+ set_np_xspc_alchar(Np, -1, lp)
+ local end_math = node_end_of_math(lp)
+ ltjw_apply_ashift_math(lp, end_math, attr_ablshift)
+ set_attr(end_math, attr_icflag, PROCESSED)
+ Np.last, Np.id = end_math, id_math;
+ return true, node_next(end_math);
+ end,
+ [id_glue] = function(lp)
+ Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
+ Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
+ return true, node_next(lp)
+ end,
+ [id_disc] = function(lp)
+ Np.first, Np.nuc, Np.last = (Np.first or lp), lp, lp;
+ Np.id = getid(lp); set_attr(lp, attr_icflag, PROCESSED)
+ ltjw_apply_ashift_disc(lp, (list_dir==dir_tate), tex_dir)
+ Np.last_char = check_box_high(Np, getfield(lp, 'replace'), nil)
+ return true, node_next(lp)
+ end,
+ [id_kern] = function(lp)
+ if getsubtype(lp)==2 then
+ Np.first = Np.first or lp
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ if getid(lp)==id_glyph then -- アクセント本体
+ setfield(lp, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lp,attr_ablshift) or 0))
+ else -- アクセントは上下にシフトされている
+ setfield(lp, 'shift', getfield(lp, 'shift') + (has_attr(lp,attr_ablshift) or 0))
+ end
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ set_attr(lp, attr_icflag, PROCESSED); lp = node_next(lp)
+ set_attr(lp, attr_icflag, PROCESSED);
+ return calc_np_aux_glyph_common(lp, true)
+ else
+ Np.first = Np.first or lp
+ Np.id = id_kern; set_attr(lp, attr_icflag, PROCESSED)
+ Np.last = lp; return true, node_next(lp)
+ end
+ end,
+ [id_penalty] = function(lp)
+ Bp[#Bp+1] = lp; set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+ end,
+}
+end -- 002 ---------------------------------------
+calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
+calc_np_auxtable[15] = calc_np_auxtable.box_like
+
+local function calc_np_aux_skip (lp)
+ set_attr(lp, attr_icflag, PROCESSED)
+ return false, node_next(lp)
+end
+
+function calc_np(last, lp)
+ local k
+ -- We assume lp = node_next(Np.last)
+ Np, Nq, non_ihb_flag = Nq, Np, true
+ -- We clear `predefined' entries of Np before pairs() loop,
+ -- because using only pairs() loop is slower.
+ Np.post, Np.pre, Np.xspc = nil, nil, nil
+ Np.first, Np.id, Np.last, Np.met, Np.class= nil, nil, nil, nil
+ Np.auto_kspc, Np.auto_xspc, Np.char, Np.nuc = nil, nil, nil, nil
+ for k in pairs(Np) do Np[k] = nil end
+
+ for k = 1,#Bp do Bp[k] = nil end
+ while lp ~= last do
+ local lpa = has_attr(lp, attr_icflag) or 0
+ -- unbox 由来ノードの検出
+ if 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[getid(lp)] or calc_np_aux_skip)(lp)
+ if k then return lp end
+ end
+ end
+ Np=nil
+end
+end -- 001 -----------------------------------------------
+
+-- 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.
+local after_hlist = nil -- global
+local after_alchar, extract_np
+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
+ local dir_tate = luatexja.dir_table.dir_tate
+
+-- 和文文字のデータを取得
+ local attr_jchar_class = luatexbase.attributes['ltj@charclass']
+ local attr_jchar_code = luatexbase.attributes['ltj@charcode']
+ local attr_autospc = luatexbase.attributes['ltj@autospc']
+ local attr_autoxspc = luatexbase.attributes['ltj@autoxspc']
+ local getcomponents = node.direct.getcomponents
+ --local ltjf_get_vert_glyph = ltjf.get_vert_glyph
+ function set_np_xspc_jachar(Nx, x)
+ local m = ltjf_font_metric_table[getfont(x)]
+ local c, c_glyph = (not getcomponents(x) and ltjs_orig_char_table[x]), getchar(x)
+ if c and c~=c_glyph then set_attr(x, attr_jchar_code, c) end
+ c = c or c_glyph
+ local cls = slow_find_char_class(c, m, c_glyph)
+ Nx.met, Nx.class, Nx.char = m, cls, c;
+ local mc = m.char_type; Nx.char_type = mc
+ if cls~=0 then set_attr(x, attr_jchar_class, cls) 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.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)
+ return m, mc, cls
+ end
+ function set_np_xspc_jachar_hbox(Nx, x)
+ local m = ltjf_font_metric_table[getfont(x)]
+ local c = has_attr(x, attr_jchar_code) or getchar(x)
+ Nx.met, Nx.char = m, c; Nx.class = has_attr(x, attr_jchar_class) or 0;
+ local mc = m.char_type; Nx.char_type = mc
+ 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
+
+-- 欧文文字のデータを取得
+ local floor = math.floor
+ local nullfunc = function(n) return n end
+ function set_np_xspc_alchar(Nx, c,x, lig)
+ if c~=-1 then
+ local f = (lig ==1) and nullfunc or node_tail
+ local xc, xs = getcomponents(x), getsubtype(x)
+ while xc and xs and xs%4>=2 do
+ x = f(xc);
+ if getid(x)==id_disc then x, xc, xs = nil, getfield(x,'replace'), 2
+ else xc, xs = getcomponents(x), getsubtype(x) end
+ end
+ c = x and getchar(x) or c
+ Nx.pre = table_current_stack[PRE + c] or 0
+ Nx.post = table_current_stack[POST + c] or 0
+ else
+ Nx.pre, Nx.post = 0, 0
+ end
+ Nx.met = nil
+ Nx.xspc = table_current_stack[XSP + c] or 3
+ Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
+ end
+ local set_np_xspc_alchar = set_np_xspc_alchar
+
+ -- change the information for the next loop
+ -- (will be done if Nx is an alphabetic character or a hlist)
+ after_hlist = function (Nx)
+ local s = Nx.last_char
+ if s then
+ if getid(s)==id_glyph then
+ if if_lang_ja(s) then
+ set_np_xspc_jachar_hbox(Nx, s)
+ else
+ set_np_xspc_alchar(Nx, getchar(s), s, 2)
+ end
+ else
+ set_np_xspc_alchar(Nx, -1, s)
+ end
+ else
+ Nx.pre, Nx.met = nil, nil
+ end
+ end
+
+ after_alchar = function (Nx)
+ local x = Nx.last_char
+ return set_np_xspc_alchar(Nx, getchar(x), x, 2)
+ end
+
+end
+
+-------------------- 最下層の処理
+
+luatexbase.create_callback('luatexja.adjust_jfmglue', 'simple', function(n) return n end)
+
+-- change penalties (or create a new penalty, if needed)
+local function handle_penalty_normal(post, pre, g)
+ luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
+ local a = (pre or 0) + (post or 0)
+ if #Bp == 0 then
+ if (a~=0 and not(g and getid(g)==id_kern)) then
+ local p = node_new(id_penalty)
+ if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
+ setfield(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)
+ luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
+ local a = (pre or 0) + (post or 0)
+ if #Bp == 0 then
+ if not (g and getid(g)==id_glue) or a~=0 then
+ local p = node_new(id_penalty)
+ if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
+ setfield(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)
+ luatexbase.call_callback('luatexja.adjust_jfmglue', head, Nq, Np, Bp)
+ if #Bp == 0 then
+ if g and getid(g)==id_glue then
+ local p = node_new(id_penalty)
+ setfield(p, 'penalty', 10000); head = insert_before(head, Np.first, p)
+ Bp[1]=p
+ set_attr(p, attr_icflag, KINSOKU)
+ end
+ else
+ local a = (pre or 0) + (post or 0)
+ for _, v in pairs(Bp) do add_penalty(v,a) end
+ end
+end
+
+local function handle_penalty_jwp()
+ local a = table_current_stack[luatexja.stack_table_index.JWP]
+ if #widow_Bp == 0 then
+ if a~=0 then
+ local p = node_new(id_penalty)
+ if a<-10000 then a = -10000 elseif a>10000 then a = 10000 end
+ setfield(p, 'penalty', a)
+ head = insert_before(head, widow_Np.first, p)
+ widow_Bp[1]=p;
+ set_attr(p, attr_icflag, KINSOKU)
+ end
+ else for _, v in pairs(widow_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(mc, bc, ac)
+-- bc, ac: char classes
+ local g = mc[bc][ac]
+ if g then
+ if g[1] then
+ return node_copy(g[1]), g.ratio, false, false, false
+ else
+ local f = node_new(id_glue)
+ set_attr(f, attr_icflag, g.priority)
+ setglue(f, g.width, g.stretch, g.shrink)
+ return f, g.ratio, g.kanjiskip_natural, g.kanjiskip_stretch, g.kanjiskip_shrink
+ end
+ end
+ return false, 0
+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
+local calc_ja_ja_aux
+do
+ local round = tex.round
+ local bg_ag = 2*id_glue - id_glue
+ local bg_ak = 2*id_glue - id_kern
+ local bk_ag = 2*id_kern - id_glue
+ local bk_ak = 2*id_kern - id_kern
+
+ local function blend_diffmet(b, a, rb, ra)
+ return round(luatexja.jfmglue.diffmet_rule((1-rb)*b+rb*a, (1-ra)*b+ra*a))
+ end
+ calc_ja_ja_aux = function (gb, ga, db, da)
+ if luatexja.jfmglue.diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
+ and luatexja.jfmglue.diffmet_rule ~= math.two_paverage then
+ db, da = 0, 1
+ end
+ if not gb then
+ if ga then
+ gb = node_new(id_kern, 1); setfield(gb, 'kern', 0)
+ else return nil end
+ elseif not ga then
+ ga = node_new(id_kern, 1); setfield(ga, 'kern', 0)
+ end
+
+ local k = 2*getid(gb) - getid(ga)
+ if k == bg_ag then
+ -- 両方とも glue.
+ setglue(gb, blend_diffmet(
+ getfield(gb, 'width'), getfield(ga, 'width'), db, da),
+ blend_diffmet(
+ getfield(gb, 'stretch'), getfield(ga, 'stretch'), db, da),
+ -blend_diffmet(
+ -getfield(gb, 'shrink'), -getfield(ga, 'shrink'), db, da))
+ node_free(ga)
+ return gb
+ elseif k == bk_ak then
+ -- 両方とも kern.
+ setfield(gb, 'kern', blend_diffmet(
+ getfield(gb, 'kern'), getfield(ga, 'kern'), db, da))
+ node_free(ga)
+ return gb
+ elseif k == bk_ag then
+ -- gb: kern, ga: glue
+ setglue(ga, blend_diffmet(
+ getfield(gb, 'kern'), getfield(ga, 'width'), db, da),
+ blend_diffmet(
+ 0, getfield(ga, 'stretch'), db, da),
+ -blend_diffmet(
+ 0, -getfield(ga, 'shrink'), db, da))
+ node_free(gb)
+ return ga, 0, 0, 0
+ else
+ -- gb: glue, ga: kern
+ setglue(gb, blend_diffmet(
+ getfield(gb, 'width'), getfield(ga, 'kern'), db, da),
+ blend_diffmet(
+ getfield(gb, 'stretch'), 0, db, da),
+ -blend_diffmet(
+ -getfield(gb, 'shrink'), 0, db, da))
+ node_free(ga)
+ return gb
+ end
+ end
+end
+
+local null_skip_table = {0, 0, 0}
+-- get kanjiskip
+local get_kanjiskip, kanjiskip_jfm_flag
+local get_kanjiskip_low
+local calc_ja_ja_glue
+do
+ local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
+ local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
+
+ get_kanjiskip_low = function(flag, qm, bn, bp, bh)
+ if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
+ if kanjiskip_jfm_flag then
+ local g = node_new(id_glue);
+ local bk = qm.kanjiskip or null_skip_table
+ setglue(g, bn and (bn*bk[1]) or 0,
+ bp and (bp*bk[2]) or 0,
+ bh and (bh*bk[3]) or 0, 0, 0)
+ set_attr(g, attr_icflag, KANJI_SKIP_JFM)
+ return g
+ elseif flag then
+ return node_copy(kanji_skip)
+ else
+ local g = node_new(id_glue);
+ setglue(g,
+ bn and (bn*getfield(kanji_skip, 'width')) or 0,
+ bp and (bp*getfield(kanji_skip, 'stretch')) or 0,
+ bh and (bh*getfield(kanji_skip, 'shrink')) or 0,
+ 0, 0)
+ set_attr(g, attr_icflag, KANJI_SKIP_JFM)
+ return g
+ end
+ end
+ end
+
+ get_kanjiskip = function()
+ if Np.auto_kspc==0 or Nq.auto_kspc==0 then
+ return nil
+ elseif Np.auto_kspc or Nq.auto_kspc then
+ local pm, qm = Np.met, Nq.met
+ if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
+ return get_kanjiskip_low(true, qm, 1, 1, 1)
+ else
+ local gb = get_kanjiskip_low(true, qm, 1, 1, 1)
+ local ga = get_kanjiskip_low(true, pm, 1, 1, 1)
+ return calc_ja_ja_aux(gb, ga, 0, 1)
+ end
+ else
+ local g = node_new(id_glue)
+ set_attr(g, attr_icflag, kanjiskip_jfm_flag and KANJI_SKIP_JFM or KANJI_SKIP)
+ return g
+ end
+ end
+
+ calc_ja_ja_glue = function ()
+ local qm, pm = Nq.met, Np.met
+ local qmc, pmc = qm.char_type, pm.char_type
+ if (qmc==pmc) and (qm.var==pm.var) then
+ local g, _, kn, kp, kh = new_jfm_glue(qmc, Nq.class, Np.class)
+ return g, (Np.auto_kspc or Nq.auto_kspc) and get_kanjiskip_low(false, qm, kn, kp, kh)
+ else
+ local npn, nqn = Np.nuc, Nq.nuc
+ local gb, db, bn, bp, bh
+ = new_jfm_glue(qmc, Nq.class,
+ slow_find_char_class(Np.char,
+ qm, getchar(npn)))
+ local ga, da, an, ap, ah
+ = new_jfm_glue(pmc,
+ slow_find_char_class(Nq.char,
+ pm, getchar(nqn)),
+ Np.class)
+ local g = calc_ja_ja_aux(gb, ga, db, da)
+ local k
+ if (pmc==qmc) and (qm.var==pm.var) then
+ gb = get_kanjiskip_low(false, qm, bn, bp, bh)
+ ga = get_kanjiskip_low(false, pm, an, ap, ah)
+ k = calc_ja_ja_aux(gb, ga, db, da)
+ end
+ return g, k
+ end
+ end
+end
+
+-------------------- 和欧文間空白量の決定
+
+-- get xkanjiskip
+local get_xkanjiskip, xkanjiskip_jfm_flag
+local get_xkanjiskip_normal, get_xkanjiskip_jfm
+local get_xkanjiskip_low
+do
+ local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
+ local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
+
+ get_xkanjiskip_low = function(flag, qm, bn, bp, bh)
+ if flag or (qm.with_kanjiskip and (bn or bp or bh)) then
+ if xkanjiskip_jfm_flag then
+ local g = node_new(id_glue);
+ local bk = qm.xkanjiskip or null_skip_table
+ setglue(g, bn and bk[1] or 0,
+ bp and bk[2] or 0,
+ bh and bk[3] or 0, 0, 0)
+ set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
+ return g
+ elseif flag then
+ return node_copy(xkanji_skip)
+ else
+ local g = node_new(id_glue);
+ setglue(g,
+ bn and (bn*getfield(xkanji_skip, 'width')) or 0,
+ bp and (bp*getfield(xkanji_skip, 'stretch')) or 0,
+ bh and (bh*getfield(xkanji_skip, 'shrink')) or 0,
+ 0, 0)
+ set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
+ return g
+ end
+ end
+ end
+
+ get_xkanjiskip = function(Nn)
+ if Np.auto_xspc==0 or Nq.auto_xspc==0 then
+ return nil
+ elseif (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
+ return get_xkanjiskip_low(true, Nn.met, 1, 1, 1)
+ else
+ local g = node_new(id_glue)
+ set_attr(g, attr_icflag, xkanjiskip_jfm_flag and XKANJI_SKIP_JFM or XKANJI_SKIP)
+ return g
+ end
+ end
+end
+
+-------------------- 隣接した「塊」間の処理
+
+local function combine_spc(name)
+ return (Np[name] or Nq[name]) and ((Np[name]~=0) and (Nq[name]~=0))
+end
+
+-- NA, NB: alchar or math
+local function get_NA_skip()
+ local pm = Np.met
+ local g, _, kn, kp, kh = new_jfm_glue(
+ pm.char_type,
+ fast_find_char_class(
+ (Nq.id == id_math and -1 or (Nq.xspc>=2 and 'alchar' or 'nox_alchar')), pm),
+ Np.class)
+ local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
+ and get_xkanjiskip_low(false, pm, kn, kp, kh)
+ return g, k
+end
+local function get_NB_skip()
+ local qm = Nq.met
+ local g, _, kn, kp, kh = new_jfm_glue(
+ qm.char_type, Nq.class,
+ fast_find_char_class(
+ (Np.id == id_math and -1 or (Np.xspc%2==1 and 'alchar' or 'nox_alchar')), qm)
+ )
+ local k = ((Nq.xspc>=2) and (Np.xspc%2==1) and combine_spc('auto_xspc'))
+ and get_xkanjiskip_low(false, qm, kn, kp, kh)
+ return g, k
+end
+
+local function get_OA_skip(is_kanji)
+ local pm = Np.met
+ local g, _, kn, kp, kh = new_jfm_glue(
+ pm.char_type,
+ fast_find_char_class(
+ (((Nq.id==id_glue)or(Nq.id==id_kern)) and 'glue' or 'jcharbdd'), pm),
+ Np.class)
+ local k
+ if is_kanji==0 then
+ k = combine_spc('auto_kspc') and get_kanjiskip_low(false, pm, kn, kp, kh)
+ end
+ return g, k
+end
+local function get_OB_skip(is_kanji)
+ local qm = Nq.met
+ local g, _, kn, kp, kh = new_jfm_glue(
+ qm.char_type, Nq.class,
+ fast_find_char_class(
+ (((Np.id==id_glue)or(Np.id==id_kern)) and 'glue' or 'jcharbdd'), qm))
+ local k
+ if is_kanji==0 then
+ k = combine_spc('auto_kspc') and get_kanjiskip_low(false, qm, kn, kp, kh)
+ end
+ return g, k
+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, k
+ if non_ihb_flag then g, k = calc_ja_ja_glue() end -- M->K
+ if not g then g = get_kanjiskip() end
+ handle_penalty_normal(Nq.post, Np.pre, g);
+ real_insert(g); real_insert(k)
+ elseif Nq.met then -- qid==id_hlist
+ local g, k
+ if non_ihb_flag then g, k = get_OA_skip(0) end -- O_A->K
+ if not g then g = get_kanjiskip() end
+ handle_penalty_normal(0, Np.pre, g); real_insert(g); real_insert(k)
+ elseif Nq.pre then
+ local g, k
+ if non_ihb_flag then g, k = get_NA_skip() end -- N_A->X
+ if not g then g = get_xkanjiskip(Np) end
+ handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g);
+ real_insert(g); real_insert(k)
+ else
+ local g = non_ihb_flag and (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 = non_ihb_flag and get_NB_skip() or get_xkanjiskip(Nq) -- N_B->X
+ handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
+ else
+ local g =non_ihb_flag and (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 qid == id_pbox_w) and Nq.met) then
+ local g = non_ihb_flag and get_OB_skip(0) 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
+local adjust_nq
+do
+ local adjust_nq_aux = {
+ [id_glyph] = function() after_alchar(Nq) 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,
+ }
+
+ adjust_nq=function()
+ local x = adjust_nq_aux[Nq.id]
+ if x then x() end
+ end
+end
+
+
+-------------------- 開始・終了時の処理
+do
+local node_prev = node.direct.getprev
+-- リスト末尾の処理
+local function handle_list_tail(mode, last)
+ adjust_nq()
+ if mode then
+ -- the current list is to be line-breaked.
+ -- Insert \jcharwidowpenalty
+ if widow_Np.first then handle_penalty_jwp() end
+ else
+ Np=Nq
+ -- 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.char_type, Np.class, fast_find_char_class('boxbdd', pm))
+ if g then
+ set_attr(g, attr_icflag, BOXBDD)
+ head = 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 non_ihb_flag then
+ local g = new_jfm_glue(pm.char_type, fast_find_char_class(par_indented, pm), Np.class)
+ if g then
+ set_attr(g, attr_icflag, BOXBDD)
+ if getid(g)==id_glue and #Bp==0 then
+ local h = node_new(id_penalty)
+ setfield(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 init_var
+do
+ local id_local = node.id('local_par')
+ local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
+ local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
+ local KSK = luatexja.stack_table_index.KSK
+ local XSK = luatexja.stack_table_index.XSK
+ local dir_yoko = luatexja.dir_table.dir_yoko
+ local dir_tate = luatexja.dir_table.dir_tate
+ local attr_yablshift = luatexbase.attributes['ltj@yablshift']
+ local attr_tablshift = luatexbase.attributes['ltj@tablshift']
+ local table_pool = {
+ {}, {}, {first=nil},
+ { 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, },
+ { 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, },
+ }
+ init_var = function (mode,dir)
+ -- 1073741823: max_dimen
+ Bp, widow_Bp, widow_Np, Np, Nq
+ = table_pool[1], table_pool[2], table_pool[3], table_pool[4], table_pool[5]
+ for i=1,5 do for j,_ in pairs(table_pool[i]) do table_pool[i][j]=nil end end
+ table_current_stack = ltjs.table_current_stack
+
+ list_dir, tex_dir = (ltjs.list_dir or dir_yoko), (dir or 'TLT')
+ local is_dir_tate = list_dir==dir_tate
+ capsule_glyph = is_dir_tate and ltjw.capsule_glyph_tate or ltjw.capsule_glyph_yoko
+ attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
+ local TEMP = node_new(id_glue)
+ -- TEMP is a dummy node, which will be freed at the end of the callback.
+ -- ithout this node, set_attr(kanji_skip, ...) somehow creates an "orphaned" attribute list.
+
+ do
+ kanji_skip, kanjiskip_jfm_flag = skip_table_to_glue(KSK)
+ set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
+ end
+
+ do
+ xkanji_skip, xkanjiskip_jfm_flag = skip_table_to_glue(XSK)
+ set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
+ end
+
+ if mode then
+ -- the current list is to be line-breaked:
+ -- hbox from \parindent is skipped.
+ local lp, par_indented, lpi, lps = head, 'boxbdd', getid(head), getsubtype(head)
+ while lp and
+ ((lpi==id_whatsit and lps~=sid_user)
+ or ((lpi==id_hlist) and (lps==3))
+ or (lpi==id_local)) do
+ if (lpi==id_hlist) and (lps==3) then
+ Np.char, par_indented = 'parbdd', 'parbdd'
+ Np.width = getfield(lp, 'width')
+ end
+ lp=node_next(lp); lpi, lps = getid(lp), getsubtype(lp) end
+ return lp, node_tail(head), par_indented, TEMP
+ else
+ return head, nil, 'boxbdd', TEMP
+ end
+ end
+end
+
+local ensure_tex_attr = ltjb.ensure_tex_attr
+local function cleanup(mode, TEMP)
+ -- luatexja.ext_show_node_list(to_node(head), '> ', print)
+ -- adjust attr_icflag for avoiding error
+ if tex.getattribute(attr_icflag)~=0 then ensure_tex_attr(attr_icflag, 0) end
+ node_free(kanji_skip);
+ node_free(xkanji_skip); node_free(TEMP)
+
+ if mode then
+ local h = node_next(head)
+ if getid(h) == id_penalty and getfield(h, 'penalty') == 10000 then
+ h = node_next(h)
+ if getid(h) == id_glue and getsubtype(h) == 15 and not node_next(h) then
+ return false
+ end
+ end
+ end
+ return head
+end
+-------------------- 外部から呼ばれる関数
+
+-- main interface
+function luatexja.jfmglue.main(ahead, mode, dir)
+ if not ahead then return ahead end
+ --luatexja.ext_show_node_list(to_node(ahead ), '>B ', print)
+ --print()
+ head = ahead;
+ local lp, last, par_indented, TEMP = init_var(mode,dir)
+ lp = calc_np(last, lp)
+ if Np then
+ handle_list_head(par_indented)
+ lp = calc_np(last,lp);
+ while Np do
+ 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(last,lp)
+ end
+ handle_list_tail(mode, last)
+ end
+ --luatexja.ext_show_node_list(to_node(ahead ), '>A ', print)
+ --print()
+ return cleanup(mode, TEMP)
+end
+end
+
+do
+ local IHB = luatexja.userid_table.IHB
+ local BPAR = luatexja.userid_table.BPAR
+ local BOXB = luatexja.userid_table.BOXB
+ local node_prev = node.direct.getprev
+ local node_write = node.direct.write
+
+ -- \inhibitglue
+ function luatexja.jfmglue.create_inhibitglue_node()
+ local tn = node_new(id_whatsit, sid_user)
+ setfield(tn, 'user_id', IHB)
+ setfield(tn, 'type', 100)
+ setfield(tn, 'value', 1)
+ node_write(tn)
+ end
+
+ -- Node for indicating beginning of a paragraph
+ -- (for ltjsclasses)
+ function luatexja.jfmglue.create_beginpar_node()
+ local tn = node_new(id_whatsit, sid_user)
+ setfield(tn, 'user_id', BPAR)
+ setfield(tn, 'type', 100)
+ setfield(tn, 'value', 1)
+ node_write(tn)
+ end
+
+ -- Node for indicating a head/end of a box
+ function luatexja.jfmglue.create_boxbdd_node()
+ local tn = node_new(id_whatsit, sid_user)
+ setfield(tn, 'user_id', BOXB)
+ setfield(tn, 'type', 100)
+ setfield(tn, 'value', 1)
+ node_write(tn)
+ end
+
+ local function whatsit_callback(Np, lp, Nq)
+ if Np and Np.nuc then return Np
+ elseif Np and getfield(lp, 'user_id') == BPAR then
+ Np.first = lp; Np.nuc = lp; Np.last = lp
+ return Np
+ elseif Np and getfield(lp, 'user_id') == BOXB then
+ Np.first = lp; Np.nuc = lp; Np.last = lp
+ if Nq then
+ if Nq.met then
+ Np.class = fast_find_char_class('boxbdd', Nq.met)
+ end
+ Np.met = Nq.met; Np.pre = 0; Np.post = 0; Np.xspc = 0
+ Np.auto_xspc, Np.auto_kspc = 0, 0
+ end
+ return Np
+ else
+ return Np
+ end
+ end
+
+ local function whatsit_after_callback(s, Nq, Np)
+ if not s and getfield(Nq.nuc, 'user_id') == BPAR then
+ local x, y = node_prev(Nq.nuc), Nq.nuc
+ Nq.first, Nq.nuc, Nq.last = x, x, x
+ if Np then
+ if Np.met then
+ Nq.class = fast_find_char_class('parbdd', Np.met)
+ end
+ Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
+ Nq.auto_xspc, Nq.auto_kspc = 0, 0
+ end
+ head = node_remove(head, y)
+ node_free(y)
+ elseif not s and getfield(Nq.nuc, 'user_id') == BOXB then
+ local x, y = node_prev(Nq.nuc), Nq.nuc
+ Nq.first, Nq.nuc, Nq.last = x, x, x
+ if Np then
+ if Np.met then
+ Nq.class = fast_find_char_class('boxbdd', Np.met)
+ end
+ Nq.met = Np.met; Nq.pre = 0; Nq.post = 0; Nq.xspc = 0
+ Nq.auto_xspc, Nq.auto_kspc = 0, 0
+ end
+ head = node_remove(head, y)
+ node_free(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
+
+luatexja.jfmglue.after_hlist = after_hlist
+luatexja.jfmglue.check_box_high = check_box_high