+++ /dev/null
---
--- luatexja/ltj-jfmglue.lua
---
-luatexbase.provides_module({
- name = 'luatexja.jfmglue',
- date = '2015/05/03',
- description = 'Insertion process of JFM glues and kanjiskip',
-})
-module('luatexja.jfmglue', package.seeall)
-local err, warn, info, log = luatexbase .errwarinf(_NAME)
-
-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 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 has_attr = Dnode.has_attribute
-local set_attr = Dnode.set_attribute
-local insert_before = Dnode.insert_before
-local insert_after = Dnode.insert_after
-local node_next = (Dnode ~= node) and Dnode.getnext or node.next
-local round = tex.round
-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 = Dnode.new
-local node_copy = Dnode.copy
-local node_remove = Dnode.remove
-local node_tail = Dnode.tail
-local node_free = Dnode.free
-local node_end_of_math = Dnode.end_of_math
-
-local id_glyph = node.id('glyph')
-local id_hlist = node.id('hlist')
-local id_vlist = node.id('vlist')
-local id_rule = node.id('rule')
-local id_ins = node.id('ins')
-local id_mark = node.id('mark')
-local id_adjust = node.id('adjust')
-local id_disc = node.id('disc')
-local id_whatsit = node.id('whatsit')
-local id_math = node.id('math')
-local id_glue = node.id('glue')
-local id_kern = node.id('kern')
-local id_penalty = node.id('penalty')
-
-local id_glue_spec = node.id('glue_spec')
-local id_jglyph = 512 -- Japanese character
-local id_box_like = 256 -- vbox, shifted hbox
-local id_pbox = 257 -- already processed nodes (by \unhbox)
-local id_pbox_w = 258 -- cluster which consists of a whatsit
-local sid_user = node.subtype('user_defined')
-local lang_ja = luatexja.lang_ja
-
-local sid_start_link = node.subtype('pdf_start_link')
-local sid_start_thread = node.subtype('pdf_start_thread')
-local sid_end_link = node.subtype('pdf_end_link')
-local sid_end_thread = node.subtype('pdf_end_thread')
-
-local ITALIC = luatexja.icflag_table.ITALIC
-local PACKED = luatexja.icflag_table.PACKED
-local KINSOKU = luatexja.icflag_table.KINSOKU
-local FROM_JFM = luatexja.icflag_table.FROM_JFM
-local 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
-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 zero_glue = node_new(id_glue)
-spec_zero_glue = to_node(node_new(id_glue_spec))
- -- must be public, since mentioned from other sources
-local spec_zero_glue = to_direct(spec_zero_glue)
-setfield(spec_zero_glue, 'width', 0)
-setfield(spec_zero_glue, 'stretch', 0)
-setfield(spec_zero_glue, 'shrink', 0)
-setfield(spec_zero_glue, 'stretch_order', 0)
-setfield(spec_zero_glue, 'shrink_order', 0)
-setfield(zero_glue, 'spec', spec_zero_glue)
-
-local function skip_table_to_spec(n)
- local g, st = node_new(id_glue_spec), ltjs.fast_get_stack_skip(n)
- setfield(g, 'width', st.width)
- setfield(g, 'stretch', st.stretch)
- setfield(g, 'shrink', st.shrink)
- setfield(g, 'stretch_order', st.stretch_order)
- setfield(g, 'shrink_order', st.shrink_order)
- return g
-end
-
-
--- penalty 値の計算
-local function add_penalty(p,e)
- local pp = getfield(p, 'penalty')
- if pp>=10000 then
- if e<=-10000 then setfield(p, 'penalty', 0) end
- elseif pp<=-10000 then
- if e>=10000 then setfield(p, 'penalty', 0) end
- else
- pp = pp + e
- if pp>=10000 then setfield(p, 'penalty', 10000)
- elseif pp<=-10000 then setfield(p, 'penalty', -10000)
- else setfield(p, 'penalty', pp) end
- end
-end
-
--- 「異なる JFM」の間の調整方法
-diffmet_rule = math.two_paverage
-function math.two_add(a,b) return a+b end
-function math.two_average(a,b) return (a+b)*0.5 end
-function math.two_paverage(a,b) return (a+b)/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
-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
- 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
-
-function check_box_high(Nx, box_ptr, box_end)
- first_char = nil; last_char = nil; find_first_char = true
- if check_box(box_ptr, box_end) then
- local first_char = first_char
- if first_char then
- if getid(first_char)==id_glyph then
- if getfield(first_char, 'lang') == lang_ja 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
-
-local traverse = Dnode.traverse
-local function check_next_ickern(lp)
- if lp and getid(lp) == id_kern and ITALIC == get_attr_icflag(lp) then
- set_attr(lp, attr_icflag, IC_PROCESSED)
- Np.last = lp; return node_next(lp)
- else
- Np.last = Np.nuc; return lp
- end
-end
-
-local function calc_np_pbox(lp, last)
- local first, lpa, nc = (not Np.first), KINSOKU, nil
- 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
- if getid(lp)==id_hlist or getid(lp)==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 ltjw_apply_ashift_math = ltjw.apply_ashift_math
-local ltjw_apply_ashift_disc = ltjw.apply_ashift_disc
-local min, max = math.min, math.max
-local function calc_np_aux_glyph_common(lp)
- Np.nuc = lp
- Np.first= (Np.first or lp)
- if getfield(lp, 'lang') == lang_ja then
- Np.id = id_jglyph
- local m, cls = set_np_xspc_jachar(Np, lp)
- local npi, npf
- lp, head, npi, npf = capsule_glyph(lp, m, cls, head, tex_dir, lp)
- Np.first = (Np.first~=Np.nuc) and Np.first or npf or npi
- Np.nuc = npi
- return true, check_next_ickern(lp);
- else
- 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 getfield(lx, 'lang') ~= lang_ja 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) -- lp: アクセント本体
- setfield(lx, 'yoffset', getfield(lp, 'yoffset') - (has_attr(lx,attr_ablshift) or 0))
- lx = node_next(node_next(lx))
- elseif ls==0 then
- Np.last = lx
- elseif (ls==1 and 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)
- 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 = (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
-local 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,
- skip = function(lp)
- set_attr(lp, attr_icflag, PROCESSED)
- return false, 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;
- 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)
- 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)
- 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,
-}
-calc_np_auxtable[id_rule] = calc_np_auxtable.box_like
-calc_np_auxtable[13] = calc_np_auxtable.box_like
-calc_np_auxtable[id_ins] = calc_np_auxtable.skip
-calc_np_auxtable[id_mark] = calc_np_auxtable.skip
-calc_np_auxtable[id_adjust] = calc_np_auxtable.skip
-
-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)](lp)
- if k then return lp end
- end
- end
- Np=nil
-end
-end
-
--- 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.
-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 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 = ltjs_orig_char_table[x], getchar(x)
- c = c or c_glyph
- local cls = slow_find_char_class(c, m, c_glyph)
- Nx.met, Nx.class, Nx.char = m, cls, c;
- if cls~=0 then set_attr(x, attr_jchar_class, cls) end
- if c~=c_glyph then set_attr(x, attr_jchar_code, c) 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, 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;
- 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
- 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 = getfield(x, 'components'), getsubtype(x)
- while xc and xs and xs%4>=2 do
- x = f(xc); xc, xs = getfield(x, 'components'), getsubtype(x)
- end
- c = getchar(x)
- 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
- else
- Nx.pre, Nx.post = 0, 0
- Nx.xspc = table_current_stack[XSP - 1] or 3
- end
- Nx.met = nil
- Nx.auto_xspc = (has_attr(x, attr_autoxspc)==1)
- end
- local set_np_xspc_alchar = set_np_xspc_alchar
-
- -- 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 getfield(s, 'lang') == lang_ja 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
-
--- change penalties (or create a new penalty, if needed)
-local function handle_penalty_normal(post, pre, g)
- local a = (pre or 0) + (post or 0)
- if #Bp == 0 then
- if (a~=0 and not(g and 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)
- 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)
- local a = (pre or 0) + (post or 0)
- 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 for _, v in pairs(Bp) do add_penalty(v,a) end
- end
-end
-
--- 和文文字間の JFM glue を node 化
-local function new_jfm_glue(m, bc, ac)
--- bc, ac: char classes
- local g = m.char_type[bc][ac]
- if g then
- if g[1] then
- local f = node_new(id_glue)
- set_attr(f, attr_icflag, g[4])
- setfield(f, 'spec', node_copy(g[2]))
- return f, g[3]
- else
- return node_copy(g[2]), g[3]
- end
- end
- return nil, 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 null_skip_table = {0, 0, 0}
--- get kanjiskip
-local get_kanjiskip
-local get_kanjiskip_normal, get_kanjiskip_jfm
-do
- local KANJI_SKIP = luatexja.icflag_table.KANJI_SKIP
- local KANJI_SKIP_JFM = luatexja.icflag_table.KANJI_SKIP_JFM
- get_kanjiskip_normal = function ()
- if Np.auto_kspc or Nq.auto_kspc then
- return node_copy(kanji_skip)
- else
- local g = node_copy(zero_glue)
- set_attr(g, attr_icflag, KANJI_SKIP)
- return g
- end
- end
-
- get_kanjiskip_jfm = function ()
- local g
- if Np.auto_kspc or Nq.auto_kspc then
- g = node_new(id_glue); --copy_attr(g, Nq.nuc)
- local gx = node_new(id_glue_spec);
- setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
- local pm, qm = Np.met, Nq.met
- local bk = qm.kanjiskip or null_skip_table
- if (pm.char_type==qm.char_type) and (qm.var==pm.var) then
- setfield(gx, 'width', bk[1])
- setfield(gx, 'stretch', bk[2])
- setfield(gx, 'shrink', bk[3])
- else
- local ak = pm.kanjiskip or null_skip_table
- setfield(gx, 'width', round(diffmet_rule(bk[1], ak[1])))
- setfield(gx, 'stretch', round(diffmet_rule(bk[2], ak[2])))
- setfield(gx, 'shrink', -round(diffmet_rule(-bk[3], -ak[3])))
- end
- setfield(g, 'spec', gx)
- else
- g = node_copy(zero_glue)
- end
- set_attr(g, attr_icflag, KANJI_SKIP_JFM)
- return g
- end
-end
-
-local calc_ja_ja_aux
-do
- 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
-
- calc_ja_ja_aux = function (gb,ga, db, da)
- local rbb, rab = 0.5*(1-db), 0.5*(1-da) -- 「前の文字」由来のグルーの割合
- local rba, raa = 0.5*(1+db), 0.5*(1+da) -- 「前の文字」由来のグルーの割合
- if diffmet_rule ~= math.two_pleft and diffmet_rule ~= math.two_pright
- and diffmet_rule ~= math.two_paverage then
- rbb, rab, rba, raa = 1,0,0,1
- end
- if not gb then
- if ga then
- gb = node_new(id_kern); setfield(gb, 'kern', 0)
- else return nil end
- elseif not ga then
- ga = node_new(id_kern); setfield(ga, 'kern', 0)
- end
-
- local k = 2*getid(gb) - getid(ga)
- if k == bg_ag then
- local bs, as = getfield(gb, 'spec'), getfield(ga, 'spec')
- -- 両方とも glue．
- local bd, ad = getfield(bs, 'width'), getfield(as, 'width')
- setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
- bd, ad = getfield(bs, 'stretch'), getfield(as, 'stretch')
- setfield(bs, 'stretch', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
- bd, ad = getfield(bs, 'shrink'), getfield(as, 'shrink')
- setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd - rba*ad, -rab*bd - raa*ad)))
- node_free(ga)
- return gb
- elseif k == bk_ak then
- -- 両方とも kern．
- local bd, ad = getfield(gb, 'kern'), getfield(ga, 'kern')
- setfield(gb, 'kern', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
- node_free(ga)
- return gb
- elseif k == bk_ag then
- local as = getfield(ga, 'spec')
- -- gb: kern, ga: glue
- local bd, ad = getfield(gb, 'kern'), getfield(as, 'width')
- setfield(as, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
- ad = getfield(as, 'stretch')
- setfield(bs, 'stretch', round(diffmet_rule(rba*ad, raa*ad)))
- ad = getfield(as, 'shrink')
- setfield(bs, 'shrink', -round(diffmet_rule(-rba*ad, -raa*ad)))
- node_free(gb)
- return ga
- else
- local bs = getfield(gb, 'spec')
- -- gb: glue, ga: kern
- local bd, ad = getfield(bs, 'width'), getfield(ga, 'kern')
- setfield(bs, 'width', round(diffmet_rule(rbb*bd + rba*ad, rab*bd + raa*ad)))
- bd = getfield(bs, 'stretch')
- setfield(bs, 'stretch', round(diffmet_rule(rbb*bd, rab*bd)))
- bd = getfield(bs, 'shrink')
- setfield(bs, 'shrink', -round(diffmet_rule(-rbb*bd, -rab*bd)))
- node_free(ga)
- return gb
- end
- end
-end
-
-local function calc_ja_ja_glue()
- local qm, pm = Nq.met, Np.met
- if (qm.char_type==pm.char_type) and (qm.var==pm.var) then
- return new_jfm_glue(qm, Nq.class, Np.class)
- else
- local npn, nqn = Np.nuc, Nq.nuc
- local gb, db = new_jfm_glue(qm, Nq.class,
- slow_find_char_class(Np.char,
- qm, getchar(npn)))
- local ga, da = new_jfm_glue(pm,
- slow_find_char_class(Nq.char,
- pm, getchar(nqn)),
- Np.class)
- return calc_ja_ja_aux(gb, ga, db, da);
- end
-end
-
--------------------- 和欧文間空白量の決定
-
--- get xkanjiskip
-local get_xkanjiskip
-local get_xkanjiskip_normal, get_xkanjiskip_jfm
-do
- local XKANJI_SKIP = luatexja.icflag_table.XKANJI_SKIP
- local XKANJI_SKIP_JFM = luatexja.icflag_table.XKANJI_SKIP_JFM
- get_xkanjiskip_normal = function (Nn)
- if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
- return node_copy(xkanji_skip)
- else
- local g = node_copy(zero_glue)
- set_attr(g, attr_icflag, XKANJI_SKIP)
- return g
- end
- end
- get_xkanjiskip_jfm = function (Nn)
- local g
- if (Nq.xspc>=2) and (Np.xspc%2==1) and (Nq.auto_xspc or Np.auto_xspc) then
- g = node_new(id_glue)
- local gx = node_new(id_glue_spec);
- setfield(gx, 'stretch_order', 0); setfield(gx, 'shrink_order', 0)
- local bk = Nn.met.xkanjiskip or null_skip_table
- setfield(gx, 'width', bk[1])
- setfield(gx, 'stretch', bk[2])
- setfield(gx, 'shrink', bk[3])
- setfield(g, 'spec', gx)
- else
- g = node_copy(zero_glue)
- end
- set_attr(g, attr_icflag, XKANJI_SKIP_JFM)
- return g
- end
-end
-
--------------------- 隣接した「塊」間の処理
-
-local function get_OA_skip()
- local pm = Np.met
- return new_jfm_glue(pm,
- fast_find_char_class((Nq.id == id_math and -1 or 'jcharbdd'), pm), Np.class)
-end
-local function get_OB_skip()
- local qm = Nq.met
- return new_jfm_glue(qm, Nq.class,
- fast_find_char_class((Np.id == id_math and -1 or'jcharbdd'), qm))
-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 = non_ihb_flag and calc_ja_ja_glue() or get_kanjiskip() -- M->K
- handle_penalty_normal(Nq.post, Np.pre, g); real_insert(g)
- elseif Nq.met then -- qid==id_hlist
- local g = non_ihb_flag and get_OA_skip() or get_kanjiskip() -- O_A->K
- handle_penalty_normal(0, Np.pre, g); real_insert(g)
- elseif Nq.pre then
- local g = non_ihb_flag and get_OA_skip() or get_xkanjiskip(Np) -- O_A->X
- handle_penalty_normal((qid==id_hlist and 0 or Nq.post), Np.pre, g); real_insert(g)
- else
- local g = 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_OB_skip() or get_xkanjiskip(Nq) -- O_B->X
- handle_penalty_normal(Nq.post, (Np.id==id_hlist and 0 or Np.pre), g); real_insert(g)
- else
- local g =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 Nq.id == id_pbox_w) and Nq.met) then
- local g = non_ihb_flag and get_OB_skip() or get_kanjiskip() -- O_B->K
- handle_penalty_normal(Nq.post, 0, g); real_insert(g)
- elseif Nq.met then -- Nq.id==id_hlist
- local g = get_kanjiskip() -- K
- handle_penalty_suppress(0, 0, g); real_insert(g)
- elseif Nq.pre then
- local g = get_xkanjiskip(Np) -- X
- handle_penalty_suppress(0, 0, g); real_insert(g)
- end
-end
-
--- (和文文字で終わる hlist) .. (anything)
-local function handle_nq_ja_hlist()
- if Np.pre then
- local g = get_xkanjiskip(Nq) -- X
- handle_penalty_suppress(0, 0, g); real_insert(g)
- end
-end
-
-
--- Nq が前側のクラスタとなることによる修正
-do
- local adjust_nq_aux = {
- [id_glyph] = function() 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,
- }
-
- function adjust_nq()
- local x = adjust_nq_aux[Nq.id]
- if x then x() end
- end
-end
-
-
--------------------- 開始・終了時の処理
-do
-
--- リスト末尾の処理
-local JWP = luatexja.stack_table_index.JWP
-local function handle_list_tail(mode)
- adjust_nq(); Np = Nq
- if mode then
- -- the current list is to be line-breaked.
- -- Insert \jcharwidowpenalty
- Bp = widow_Bp; Np = widow_Np
- if Np.first then
- handle_penalty_normal(0, table_current_stack[JWP] or 0)
- end
- else
- -- the current list is the contents of a hbox
- local npi, pm = Np.id, Np.met
- if npi == id_jglyph or (npi==id_pbox and pm) then
- local g = new_jfm_glue(pm, Np.class, fast_find_char_class('boxbdd', pm))
- if g then
- set_attr(g, attr_icflag, BOXBDD)
- head = 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, 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 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 = node_new(id_glue); set_attr(kanji_skip, attr_icflag, KANJI_SKIP)
- local s = skip_table_to_spec(KSK)
- setfield(kanji_skip, 'spec', s)
- get_kanjiskip = (getfield(s, 'width') == 1073741823)
- and get_kanjiskip_jfm or get_kanjiskip_normal
- end
-
- do
- xkanji_skip = node_new(id_glue); set_attr(xkanji_skip, attr_icflag, XKANJI_SKIP)
- local s = skip_table_to_spec(XSK)
- setfield(xkanji_skip, 'spec', s)
- get_xkanjiskip = (getfield(s, 'width') == 1073741823)
- and get_xkanjiskip_jfm or get_xkanjiskip_normal
- 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))) 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)
- -- 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 main(ahead, mode, dir)
- if not ahead then return ahead end
- 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)
- end
- return cleanup(mode, TEMP)
-end
-end
-
-do
- local IHB = luatexja.userid_table.IHB
- local JGH = luatexja.userid_table.JGH
- local BPAR = luatexja.userid_table.BPAR
- local node_prev = (Dnode ~= node) and Dnode.getprev or node.prev
- local node_write = Dnode.write
- local scan_int = luatexja.token.scan_int
-
- -- \inhibitglue
- function 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
-
- -- \ltjghost<char_code>
- function create_inhibitglue_node()
- local tn = node_new(id_whatsit, sid_user)
- setfield(tn, 'user_id', JGH)
- setfield(tn, 'type', 100)
- setfield(tn, 'value', scan_int())
- node_write(tn)
- end
-
- -- Node for indicating beginning of a paragraph
- -- (for ltjsclasses)
- function create_beginpar_node()
- local tn = node_new(id_whatsit, sid_user)
- setfield(tn, 'user_id', BPAR)
- 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') == JGH then
- Nq.first = lp; Np.nuc = lp; Np.last = lp
- Np.met, Np.pre, Np.post = Nq.met, 0, 0
- return Np
- end
- end
-
- local function whatsit_after_callback(s, Nq, Np)
- if not s then
- if 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 = false
- end
- head = node_remove(head, y)
- node_free(y)
- elseif getfield(Nq.nuc, 'user_id') == JGH 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 = false
- end
- head = node_remove(head, y)
- node_free(y)
- return Np
- end
- 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
\ No newline at end of file
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