--
-- ltj-adjust.lua
--
+luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
luatexja.load_module('jfmglue'); local ltjj = luatexja.jfmglue
luatexja.load_module('stack'); local ltjs = luatexja.stack
luatexja.load_module('direction'); local ltjd = luatexja.direction
+luatexja.load_module('lineskip'); local ltjl = luatexja.lineskip
+luatexja.adjust = luatexja.adjust or {}
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 is_zero_glue = node.direct.is_zero_glue
local getlist = node.direct.getlist
local getid = node.direct.getid
local getfont = node.direct.getfont
local node_traverse_id = node.direct.traverse_id
local node_new = node.direct.new
-local node_copy = node.direct.copy
-local node_hpack = node.direct.hpack
local node_next = node.direct.getnext
local node_free = node.direct.free
local node_prev = node.direct.getprev
local id_hlist = node.id('hlist')
local id_glue = node.id('glue')
local id_whatsit = node.id('whatsit')
+local id_penalty = node.id('penalty')
local attr_icflag = luatexbase.attributes['ltj@icflag']
local attr_jchar_class = luatexbase.attributes['ltj@charclass']
local lang_ja = luatexja.lang_ja
local ltjf_font_metric_table = ltjf.font_metric_table
-local round, pairs = tex.round, pairs
+local ipairs, pairs = ipairs, pairs
local PACKED = luatexja.icflag_table.PACKED
+local LINEEND = luatexja.icflag_table.LINEEND
local FROM_JFM = luatexja.icflag_table.FROM_JFM
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
-local priority_table = {
- FROM_JFM + 2,
- FROM_JFM + 1,
- FROM_JFM,
- FROM_JFM - 1,
- FROM_JFM - 2,
- XKANJI_SKIP,
- KANJI_SKIP
-}
-
local get_attr_icflag
do
local PROCESSED_BEGIN_FLAG = luatexja.icflag_table.PROCESSED_BEGIN_FLAG
end
end
--- box 内で伸縮された glue の合計値を計算
-
-local function get_stretched(q, go, gs)
- if gs == 1 then -- stretching
- if getfield(q, 'stretch_order') == go then
- return getfield(q, 'stretch')
- else return 0
- end
- else -- shrinking
- if getfield(q, 'shrink_order') == go then
- return getfield(q, 'shrink')
- else return 0
+local priority_num = { 0, 0 }
+local at2pr = { {}, {} }
+local at2pr_st, at2pr_sh = at2pr[1], at2pr[2]
+do
+ local priority_table = {{},{}}
+ luatexja.adjust.priority_table = priority_table
+ local tmp = {}
+ local function cmp(a,b) return a[1]>b[1] end -- 大きいほうが先！
+ local function make_priority_table(glue_sign)
+ for i,_ in pairs(tmp) do tmp[i]=nil end
+ if glue_sign==2 then -- shrink
+ for i=0,63 do tmp[#tmp+1] = { (i%8)-4, FROM_JFM+i } end
+ else -- stretch
+ for i=0,63 do tmp[#tmp+1] = { math.floor(i/8)-4, FROM_JFM+i } end
+ end
+ local pt = priority_table[glue_sign]
+ tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP }
+ tmp[#tmp+1] = { pt[2]/10, XKANJI_SKIP_JFM }
+ tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP }
+ tmp[#tmp+1] = { pt[1]/10, KANJI_SKIP_JFM }
+ tmp[#tmp+1] = { pt[3]/10, -1 }
+ table.sort(tmp, cmp)
+ local a, m, n = at2pr[glue_sign], 10000000, 0
+ for i=1,#tmp do
+ if tmp[i][1]<m then n,m = n+1,tmp[i][1] end
+ a[tmp[i][2]] = n
end
+ local o = a[-1]
+ priority_num[glue_sign] = n
+ setmetatable(a, {__index = function () return o end })
end
+ luatexja.adjust.make_priority_table = make_priority_table
end
-local res = {}
-local function get_total_stretched(p, line)
- local go, gf, gs
- = getfield(p, 'glue_order'), getfield(p, 'glue_set'), getfield(p, 'glue_sign')
- if go ~= 0 then return nil end
- res[0], res.glue_set, res.name = 0, gf, (gs==1) and 'stretch' or 'shrink'
- for i=1,#priority_table do res[priority_table[i]]=0 end
- if gs ~= 1 and gs ~= 2 then return res, 0 end
- local total = 0
- for q in node_traverse_id(id_glue, getlist(p)) do
- local a, ic = get_stretched(q, go, gs), get_attr_icflag(q)
- if ic == KANJI_SKIP_JFM then ic = KANJI_SKIP
- elseif ic == XKANJI_SKIP_JFM then ic = XKANJI_SKIP
+-- box 内で伸縮された glue の合計値を計算
+
+local total_stsh = {{},{}}
+local total_st, total_sh = total_stsh[1], total_stsh[2]
+local get_total_stretched
+do
+local dimensions = node.direct.dimensions
+function get_total_stretched(p)
+-- return value: <補正値(sp)>
+ local ph = getlist(p)
+ if not ph then return 0 end
+ for i,_ in pairs(total_st) do total_st[i]=nil; total_sh[i]=nil end
+ for i=1,priority_num[1] do total_st[i]=0 end
+ for i=1,priority_num[2] do total_sh[i]=0 end
+ for i=0,4 do total_st[i*65536]=0; total_sh[i*65536]=0 end
+ for q in node_traverse_id(id_glue, ph) do
+ local a = getfield(q, 'stretch_order')
+ if a==0 then
+ local b = at2pr_st[get_attr_icflag(q)];
+ total_st[b] = total_st[b]+getfield(q, 'stretch')
end
- if type(res[ic]) == 'number' then
- res[ic], total = res[ic] + a, total + a
- else
- res[0], total = res[0] + a, total + a
+ total_st[a*65536] = total_st[a]+getfield(q, 'stretch')
+ local a = getfield(q, 'shrink_order')
+ if a==0 then
+ local b = at2pr_sh[get_attr_icflag(q)];
+ total_sh[b] = total_sh[b]+getfield(q, 'shrink')
end
+ total_sh[a*65536] = total_sh[a]+getfield(q, 'shrink')
end
- return res, total
-end
-
-local function clear_stretch(p, ic, name)
- for q in node_traverse_id(id_glue, getlist(p)) do
- local f = get_attr_icflag(q)
- if (f == ic) or ((ic ==KANJI_SKIP) and (f == KANJI_SKIP_JFM))
- or ((ic ==XKANJI_SKIP) and (f == XKANJI_SKIP_JFM)) then
- setfield(q, name..'_order', 0)
- setfield(q, name, 0)
- end
+ for i=4,1,-1 do if total_st[i*65536]~=0 then total_st.order=i; break end; end
+ if not total_st.order then
+ total_st.order, total_st[-65536] = -1,0.1 -- dummy
end
-end
-
-local function set_stretch(p, after, before, ic, name)
- if before > 0 then
- local ratio = after/before
- for q in node_traverse_id(id_glue, getlist(p)) do
- local f = get_attr_icflag(q)
- if (f == ic) or ((ic ==KANJI_SKIP) and (f == KANJI_SKIP_JFM))
- or ((ic ==XKANJI_SKIP) and (f == XKANJI_SKIP_JFM)) then
- if getfield(q, name..'_order')==0 then
- setfield(q, name, getfield(q, name)*ratio)
- end
- end
- end
+ for i=4,1,-1 do if total_sh[i*65536]~=0 then total_sh.order=i; break end; end
+ if not total_sh.order then
+ total_sh.order, total_sh[-65536] = -1,0.1 -- dummy
end
+ return getfield(p,'width') - dimensions(ph)
+end
end
-- step 1: 行末に kern を挿入（句読点，中点用）
+local abs = math.abs
local ltjd_glyph_from_packed = ltjd.glyph_from_packed
-local function aw_step1(p, res, total)
+local function aw_step1(p, total)
local head = getlist(p)
- local x = node_tail(head); if not x then return false end
+ local x = node_tail(head); if not x then return total, false end
-- x: \rightskip
- x = node_prev(x); if not x then return false end
+ x = node_prev(x); if not x then return total, false end
local xi, xc = getid(x)
- if xi == id_glue and getsubtype(x) == 15 then
- -- 段落最終行のときは，\penalty10000 \parfillskip が入るので，
- -- その前の node が本来の末尾文字となる
- x = node_prev(node_prev(x)); xi = getid(x)
- end
- -- local xi = getid(x)
- -- while (get_attr_icflag(x) == PACKED)
- -- and ((xi == id_penalty) or (xi == id_kern) or (xi == id_kern)) do
- -- x = node_prev(x); xi = getid(x)
- -- end
+ -- x may be penalty
+ while xi==id_penalty do
+ x = node_prev(x); if not x then return total, false end
+ xi = getid(x)
+ end
+ if (total>0 and total_st.order>0) or (total<0 and total_sh.order>0) then
+ -- 無限大のグルーで処理が行われているときは処理中止．
+ return total, false
+ end
if xi == id_glyph and getfield(x, 'lang')==lang_ja then
-- 和文文字
xc = x
xc = ltjd_glyph_from_packed(x)
while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために？
else
- return false-- それ以外は対象外．
+ return total, false-- それ以外は対象外．
+ end
+ local eadt = ltjf_font_metric_table[getfont(xc)]
+ .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
+ if not eadt then
+ return total, false
end
- local xk = ltjf_font_metric_table[getfont(xc)]
- .char_type[has_attr(xc, attr_jchar_class) or 0]['end_' .. res.name] or 0
+ local eadt_ratio = {}
+ for i, v in ipairs(eadt) do
+ local t = total - v
+ if t>0 then
+ eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
+ else
+ eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
+ end
+ end
+ table.sort(eadt_ratio,
+ function (a,b)
+ for i=2,4 do
+ local at, bt = abs(a[i]), abs(b[i])
+ if at~=bt then return at<bt end
+ end
+ return a[4]<b[4]
+ end)
+ if eadt[eadt_ratio[1][1]]~=0 then
+ local kn = node_new(id_kern, 1)
+ setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
+ insert_after(head, x, kn)
+ return eadt_ratio[1][3], true
+ else
+ return total, false
+ end
+end
- if xk>0 and total>=xk then
- total = total - xk
- local kn = node_new(id_kern)
- setfield(kn, 'kern', (res.name=='shrink' and -1 or 1) * xk)
- set_attr(kn, attr_icflag, FROM_JFM)
+-- step 1 最終行用
+local min, max = math.min, math.max
+local function aw_step1_last(p, total)
+ local head = getlist(p)
+ local x = node_tail(head); if not x then return total, false end
+ -- x: \rightskip
+ pf = node_prev(x); if not x then return total, false end
+ if getid(pf) ~= id_glue or getsubtype(pf) ~= 15 then return total, false end
+ x = node_prev(node_prev(pf)); xi = getid(x)
+ local xi, xc = getid(x)
+ if xi == id_glyph and getfield(x, 'lang')==lang_ja then
+ -- 和文文字
+ xc = x
+ elseif xi == id_hlist and get_attr_icflag(x) == PACKED then
+ -- packed JAchar
+ xc = ltjd_glyph_from_packed(x)
+ while getid(xc) == id_whatsit do xc = node_next(xc) end -- これはなんのために？
+ else
+ return total, false-- それ以外は対象外．
+ end
+ -- 続行条件1：無限の伸縮度を持つグルーは \parfillskipのみ
+ if total>0 and total_st.order>0 then
+ if total_st.order ~= getfield(pf, 'stretch_order') then return total, false end
+ if total_st[total_st.order*65536] ~= getfield(pf, 'stretch') then return total, false end
+ for i=total_st.order-1, 1, -1 do
+ if total_st[i*65536] ~= 0 then return total, false end
+ end
+ end
+ if total<0 and total_sh.order>0 then
+ if total_sh.order ~= getfield(pf, 'shrink_order') then return total, false end
+ if total_sh[total_sh.order*65536] ~= getfield(pf, 'shrink') then return total, false end
+ for i=total_sh.order-1, 1, -1 do
+ if total_sh[i*65536] ~= 0 then return total, false end
+ end
+ end
+ local eadt = ltjf_font_metric_table[getfont(xc)]
+ .char_type[has_attr(xc, attr_jchar_class) or 0].end_adjust
+ if not eadt then
+ return total, false
+ end
+ -- 続行条件2: min(eadt[1], 0)<= \parfillskip <= max(eadt[#eadt], 0)
+ local pfw = getfield(pf, 'width')
+ + (total>0 and getfield(pf, 'stretch') or -getfield(pf, 'shrink')) *getfield(p, 'glue_set')
+ if pfw<min(0,eadt[1]) or max(0,eadt[#eadt])<pfw then return total, false end
+ -- \parfillskip を 0 にする
+ total = total + getfield(pf, 'width')
+ total_st.order, total_sh.order = 0, 0
+ if getfield(pf, 'stretch_order')==0 then
+ local i = at2pr_st[-1]
+ total_st[0] = total_st[0] - getfield(pf, 'stretch')
+ total_st[i] = total_st[i] - getfield(pf, 'stretch')
+ total_st.order = (total_st[0]==0) and -1 or 0
+ end
+ if getfield(pf, 'shrink_order')==0 then
+ local i = at2pr_sh[-1]
+ total_sh[0] = total_sh[0] - getfield(pf, 'shrink')
+ total_sh[i] = total_sh[i] - getfield(pf, 'shrink')
+ total_sh.order = (total_sh[0]==0) and -1 or 0
+ end
+ setfield(pf, 'subtype', 1); setglue(pf)
+ local eadt_ratio = {}
+ for i, v in ipairs(eadt) do
+ local t = total - v
+ if t>0 then
+ eadt_ratio[i] = {i, t/total_st[65536*total_st.order], t, v}
+ else
+ eadt_ratio[i] = {i, t/total_sh[65536*total_sh.order], t, v}
+ end
+ end
+ table.sort(eadt_ratio,
+ function (a,b)
+ for i=2,4 do
+ local at, bt = abs(a[i]), abs(b[i])
+ if at~=bt then return at<bt end
+ end
+ return a[4]<b[4]
+ end)
+ if eadt[eadt_ratio[1][1]]~=0 then
+ local kn = node_new(id_kern, 1)
+ setfield(kn, 'kern', eadt[eadt_ratio[1][1]]); set_attr(kn, attr_icflag, LINEEND)
insert_after(head, x, kn)
- return true
- else return false
+ return eadt_ratio[1][3], true
+ else
+ return total, false
end
end
+
-- step 2: 行中の glue を変える
-local function aw_step2(p, res, total, added_flag)
- if total == 0 then -- もともと伸縮の必要なし
- if added_flag then -- 行末に kern 追加したので，それによる補正
- local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
- setfield(f, 'head', nil)
- setfield(p, 'glue_set', getfield(f, 'glue_set'))
- setfield(p, 'glue_order', getfield(f, 'glue_order'))
- setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
- node_free(f)
- return
- end
- elseif total <= res[0] then -- 和文処理グルー以外で足りる
- for _,v in pairs(priority_table) do clear_stretch(p, v, res.name) end
- local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
- setfield(f, 'head', nil)
- setfield(p, 'glue_set', getfield(f, 'glue_set'))
- setfield(p, 'glue_order', getfield(f, 'glue_order'))
- setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
- node_free(f)
- else
- total = total - res[0]
- for i = 1, #priority_table do
- local v = priority_table[i]
- if total <= res[v] then
- for j = i+1,#priority_table do
- clear_stretch(p, priority_table[j], res.name)
- end
- set_stretch(p, total, res[v], v, res.name); break
+local aw_step2, aw_step2_dummy
+do
+local node_hpack = node.direct.hpack
+local function repack(p)
+ local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
+ setfield(f, 'head', nil)
+ setfield(p, 'glue_set', getfield(f, 'glue_set'))
+ setfield(p, 'glue_order', getfield(f, 'glue_order'))
+ setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
+ node_free(f)
+ return
+end
+function aw_step2_dummy(p, _, added_flag)
+ if added_flag then return repack(p) end
+end
+
+local function clear_stretch(p, ind, ap, name)
+ for q in node_traverse_id(id_glue, getlist(p)) do
+ local f = ap[get_attr_icflag(q)]
+ if f == ind then
+ setfield(q, name..'_order', 0)
+ setfield(q, name, 0)
+ end
+ end
+end
+
+local function set_stretch(p, after, before, ind, ap, name)
+ if before > 0 then
+ local ratio = after/before
+ for q in node_traverse_id(id_glue, getlist(p)) do
+ local f = ap[get_attr_icflag(q)]
+ if (f==ind) and getfield(q, name..'_order')==0 then
+ setfield(q, name, getfield(q, name)*ratio)
end
- total = total - res[v]
end
- local f = node_hpack(getlist(p), getfield(p, 'width'), 'exactly')
- setfield(f, 'head', nil)
- setfield(p, 'glue_set', getfield(f, 'glue_set'))
- setfield(p, 'glue_order', getfield(f, 'glue_order'))
- setfield(p, 'glue_sign', getfield(f, 'glue_sign'))
- node_free(f)
end
end
+function aw_step2(p, total, added_flag)
+ local name = (total>0) and 'stretch' or 'shrink'
+ local id = (total>0) and 1 or 2
+ local res = total_stsh[id]
+ local pnum = priority_num[id]
+ if total==0 or res.order > 0 then
+ -- もともと伸縮の必要なしか，残りの伸縮量は無限大
+ if added_flag then return repack(p) end
+ end
+ total = abs(total)
+ for i = 1, pnum do
+ if total <= res[i] then
+ local a = at2pr[id]
+ for j = i+1,pnum do
+ clear_stretch(p, j, a, name)
+ end
+ set_stretch(p, total, res[i], i, a, name); break
+ end
+ total = total - res[i]
+ end
+ return repack(p)
+end
+end
-local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
-local function adjust_width(head)
- if not head then return head end
- local line = 1
- for p in node_traverse_id(id_hlist, to_direct(head)) do
- line = line + 1
- local res, total = get_total_stretched(p, line)
- -- this is the same table as the table which is def'd in l. 92
- if res and res.glue_set<1 then
- total = round(total * res.glue_set)
- aw_step2(p, res, total, aw_step1(p, res, total))
+-- step 1': lineend=extended の場合（行分割時に考慮））
+local insert_lineend_kern
+do
+ local insert_before = node.direct.insert_before
+ local KINSOKU = luatexja.icflag_table.KINSOKU
+ function insert_lineend_kern(head, nq, np, Bp)
+ if nq.met then
+ local eadt = nq.met.char_type[nq.class].end_adjust
+ if not eadt then return end
+ if eadt[1]~=0 then
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', eadt[1]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ end
+ local eadt_num = #eadt
+ for i=2,eadt_num do
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', eadt[i]-eadt[i-1]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ end
+ if eadt_num>1 or eadt[1]~=0 then
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 0); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ local x = node_new(id_kern, 1)
+ setfield(x, 'kern', -eadt[eadt_num]); set_attr(x, attr_icflag, LINEEND)
+ insert_before(head, np.first, x)
+ local x = node_new(id_penalty)
+ setfield(x, 'penalty', 10000); set_attr(x, attr_icflag, KINSOKU)
+ insert_before(head, np.first, x); Bp[#Bp+1] = x
+ end
end
end
- return to_node(head)
end
+local adjust_width
do
- luatexja.adjust = luatexja.adjust or {}
- local is_reg = false
- function luatexja.adjust.enable_cb()
- if not is_reg then
- luatexbase.add_to_callback('post_linebreak_filter',
- adjust_width, 'Adjust width', 100)
- is_reg = true
+ local myaw_atep1, myaw_step2, myaw_step1_last
+ local dummy = function(p,t,n) return t, false end
+ local ltjs_fast_get_stack_skip = ltjs.fast_get_stack_skip
+ function adjust_width(head)
+ if not head then return head end
+ local last_p
+ for p in node_traverse_id(id_hlist, to_direct(head)) do
+ if last_p then
+ myaw_step2(last_p, myaw_step1(last_p, get_total_stretched(last_p)))
+ end
+ last_p = p
end
+ if last_p then
+ myaw_step2(last_p, myaw_step1_last(last_p, get_total_stretched(last_p)))
+ end
+ return to_node(head)
end
- function luatexja.adjust.disable_cb()
- if is_reg then
+ local is_reg = false
+ function enable_cb(status_le, status_pr, status_lp, status_ls)
+ if (status_le>0 or status_pr>0) and (not is_reg) then
+ ltjb.add_to_callback('post_linebreak_filter',
+ adjust_width, 'Adjust width',
+ luatexbase.priority_in_callback('post_linebreak_filter', 'ltj.lineskip')-1)
+ is_reg = true
+ elseif is_reg and (status_le==0 and status_pr==0) then
luatexbase.remove_from_callback('post_linebreak_filter', 'Adjust width')
is_reg = false
end
+ if status_le==2 then
+ if not luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
+ ltjb.add_to_callback('luatexja.adjust_jfmglue', insert_lineend_kern, 'luatexja.adjust')
+ end
+ myaw_step1, myaw_step1_last = dummy, aw_step1_last
+ else
+ if status_le==0 then
+ myaw_step1, myaw_step1_last = dummy, dummy
+ else
+ myaw_step1, myaw_step1_last = aw_step1, aw_step1_last
+ end
+ if luatexbase.in_callback('luatexja.adjust_jfmglue', 'luatexja.adjust') then
+ luatexbase.remove_from_callback('luatexja.adjust_jfmglue', 'luatexja.adjust')
+ end
+ end
+ myaw_step2 = (status_pr>0) and aw_step2 or aw_step2_dummy
+ luatexja.lineskip.setting(
+ status_lp>0 and 'profile' or 'dummy',
+ status_ls>0 and 'step' or 'dummy'
+ )
end
+ function disable_cb() -- only for compatibility
+ enable_cs(0,0,0,0)
+ end
+ luatexja.adjust.enable_cb=enable_cb
+ luatexja.adjust.disable_cb=disable_cb
end
luatexja.unary_pars.adjust = function(t)
return is_reg and 1 or 0
end
+
+-- ----------------------------------
+do
+ local max, ins, sort = math.max, table.insert, table.sort
+ local function insert(package, ind, d, b, e)
+ local bound = package[2]
+ bound[b], bound[e]=true, true
+ ins(package[1], {b,e,[ind]=d})
+ end
+ local function flatten(package)
+ local bd={} for i,_ in pairs(package[2]) do ins(bd,{i}) end
+ sort(bd, function (a,b) return a[1]<b[1] end)
+ local bdc=#bd; local t = package[1]
+ sort(t, function (a,b) return a[1]<b[1] end)
+ local bdi =1
+ for i=1,#t do
+ while bd[bdi][1]<t[i][1] do bdi=bdi+1 end
+ local j = bdi
+ while j<bdc and bd[j+1][1]<=t[i][2] do
+ for k,w in pairs(t[i]) do
+ if k>=3 then
+ bd[j][k]=bd[j][k] and max(bd[j][k],w) or w
+ end
+ end
+ j=j+1
+ end
+ end
+ package[2]=nil; package[1]=nil; package.flatten, package.insert=nil, nil
+ bd[#bd]=nil
+ return bd
+ end
+ function init_range()
+ return {{},{}, insert=insert, flatten=flatten}
+ end
+end
+
+-- -----------------------------------
+luatexja.adjust.step_factor = 0.5
+luatexja.unary_pars.linestep_factor = function(t)
+ return luatexja.adjust.step_factor
+end
+luatexja.adjust.profile_hgap_factor = 1
+luatexja.unary_pars.profile_hgap_factor = function(t)
+ return luatexja.adjust.profile_hgap_factor
+end
+do
+ local insert = table.insert
+ local rangedimensions, max = node.direct.rangedimensions, math.max
+ local function profile_inner(box, range, ind, vmirrored, adj)
+ local w_acc, d_before = getfield(box,'shift'), 0
+ local x = getlist(box); local xn = node_next(x)
+ while x do
+ local w, h, d
+ if xn then w, h, d= rangedimensions(box,x,xn)
+ else w, h, d= rangedimensions(box,x) end
+ if vmirrored then h=d end
+ local w_new = w_acc + w
+ if w>=0 then
+ range:insert(ind, h, w_acc-adj, w_new)
+ else
+ range:insert(ind, h, w_new-adj, w_acc)
+ end
+ w_acc = w_new; x = xn; if x then xn = node_next(x) end
+ end
+ end
+ function ltjl.p_profile(before, after, mirrored, bw)
+ local range, tls
+ = init_range(), luatexja.adjust.profile_hgap_factor*tex.lineskip.width
+ profile_inner(before, range, 3, true, tls)
+ profile_inner(after, range, 4, mirrored, tls)
+ range = range:flatten()
+ do
+ local dmax, d, hmax, h, lmin = 0, 0, 0, 0, 1/0
+ for i,v in ipairs(range) do
+ d, h = (v[3] or 0), (v[4] or 0)
+ if d>dmax then dmax=d end
+ if h>hmax then hmax=h end
+ if bw-h-d<lmin then lmin=bw-h-d end
+ end
+ if lmin==1/0 then lmin = bw end
+ return lmin,
+ bw - lmin - getfield(before, 'depth')
+ - getfield(after, mirrored and 'depth' or 'height')
+ end
+ end
+end
+
+do
+ local ltja = luatexja.adjust
+ local copy_glue = ltjl.copy_glue
+ local floor, max = math.floor, math.max
+ function ltjl.l_step(dist, g, adj, normal, bw, loc)
+ if loc=='alignment' then
+ return ltjl.l_dummy(dist, g, adj, normal, bw, loc)
+ end
+ if dist < tex.lineskiplimit then
+ local f = max(1, bw*ltja.step_factor)
+ copy_glue(g, tex.baselineskip, 1, normal - f * floor((dist-tex.lineskip.width)/f))
+ else
+ copy_glue(g, tex.baselineskip, 2, normal)
+ end
+ end
+end
+
+
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