--
--- luatexja/pretreat.lua
+-- luatexja/ltj-pretreat.lua
--
-luatexbase.provides_module({
- name = 'luatexja.pretreat',
- date = '2011/06/27',
- version = '0.1',
- description = '',
-})
-module('luatexja.pretreat', package.seeall)
-local err, warn, info, log = luatexbase.errwarinf(_NAME)
-require('luatexja.charrange'); local ltjc = luatexja.charrange
-require('luatexja.jfont'); local ltjf = luatexja.jfont
-require('luatexja.stack'); local ltjs = luatexja.stack
+luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+luatexja.load_module('stack'); local ltjs = luatexja.stack
+luatexja.load_module('jfont'); local ltjf = luatexja.jfont
-local has_attr = node.has_attribute
-local set_attr = node.set_attribute
-local unset_attr = node.unset_attribute
-local node_type = node.type
-local node_remove = node.remove
-local node_next = node.next
-local node_free = node.free
+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 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 getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
+local getfield = (Dnode ~= node) and Dnode.getfield or function(n, i) return n[i] end
+local getsubtype = (Dnode ~= node) and Dnode.getsubtype or function(n) return n.subtype end
+
+local pairs = pairs
+local floor = math.floor
+local has_attr = Dnode.has_attribute
+local set_attr = Dnode.set_attribute
+local node_traverse = Dnode.traverse
+local node_remove =luatexja.Dnode_remove -- Dnode.remove
+local node_next = Dnode.getnext
+local node_free = Dnode.free
+local node_end_of_math = Dnode.end_of_math
+local tex_getcount = tex.getcount
local id_glyph = node.id('glyph')
local id_math = node.id('math')
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
local attr_icflag = luatexbase.attributes['ltj@icflag']
-local attr_yablshift = luatexbase.attributes['ltj@yablshift']
-local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
-local ltjf_font_metric_table = ltjf.font_metric_table
+local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
+local ltjf_replace_altfont = ltjf.replace_altfont
+local attr_orig_char = luatexbase.attributes['ltj@origchar']
+local STCK = luatexja.userid_table.STCK
------------------------------------------------------------------------
-- MAIN PROCESS STEP 1: replace fonts
------------------------------------------------------------------------
-box_stack_level = 0
--- This is used in jfmglue.lua.
+local wt
+do
+ local head
-local function suppress_hyphenate_ja(head)
- local non_math = true
- for p in node.traverse(head) do
- if p.id == id_glyph and non_math then
- local i = has_attr(p, attr_icflag) or 0
- if i==0 and ltjc.is_ucs_in_japanese_char(p) then
- local v = has_attr(p, attr_curjfnt)
- if v then
- p.font = v
- end
- v = has_attr(p, attr_ykblshift)
- if v then
- set_attr(p, attr_yablshift, v)
- else
- unset_attr(p, attr_yablshift)
- end
- if p.subtype%2==1 then p.subtype = p.subtype - 1 end
- -- p.lang=lang_ja
- end
- elseif p.id == id_math then
- non_math = (p.subtype ~= 0)
+ local suppress_hyphenate_ja_aux = {}
+ suppress_hyphenate_ja_aux[id_glyph] = function(p)
+ if (has_attr(p, attr_icflag) or 0)<=0 and is_ucs_in_japanese_char(p) then
+ local pc = getchar(p)
+ local pf = ltjf_replace_altfont(has_attr(p, attr_curjfnt) or getfont(p), pc)
+ setfield(p, 'font', pf); set_attr(p, attr_curjfnt, pf)
+ setfield(p, 'subtype', floor(getsubtype(p)*0.5)*2)
+ set_attr(p, attr_orig_char, pc)
end
+ return p
+ end
+ suppress_hyphenate_ja_aux[id_math] = function(p) return node_end_of_math(node_next(p)) end
+ suppress_hyphenate_ja_aux[id_whatsit] = function(p)
+ if getsubtype(p)==sid_user and getfield(p, 'user_id')==STCK then
+ wt[#wt+1] = p; head = node_remove(head, p)
+ end
+ return p
end
- lang.hyphenate(head)
- return head
-end
--- mode: true iff this function is called from hpack_filter
-function set_box_stack_level(head, mode)
- local box_set = false
- local p = head
- local cl = tex.currentgrouplevel + 1
- for p in node.traverse_id(id_whatsit, head) do
- if p.subtype==sid_user and p.user_id==30112 then
- local g = p
- if mode and g.value==cl then box_set = true end
- head, p = node_remove(head, g); node_free(g); break
+ local function suppress_hyphenate_ja (h)
+ local p = to_direct(h)
+ wt, head = {}, p
+ while p do
+ local pfunc = suppress_hyphenate_ja_aux[getid(p)]
+ if pfunc then p = pfunc(p) end
+ p = node_next(p)
end
+ head = to_node(head)
+ lang.hyphenate(head)
+ return head
end
- if box_set then
- box_stack_level = tex.getcount('ltj@@stack') + 1
- else
- box_stack_level = tex.getcount('ltj@@stack')
+
+ luatexbase.add_to_callback('hyphenate',
+ function (head,tail)
+ return suppress_hyphenate_ja(head)
+ end,'ltj.hyphenate')
+end
+
+-- mode: true iff this function is called from hpack_filter
+local function set_box_stack_level(head, mode)
+ local box_set, cl = 0, tex.currentgrouplevel + 1
+ for _,p in pairs(wt) do
+ if mode and getfield(p, 'value')==cl then box_set = 1 end; node_free(p)
end
+ ltjs.report_stack_level(tex_getcount('ltj@@stack') + box_set)
return head
end
function (head)
return set_box_stack_level(head, false)
end,'ltj.pre_linebreak_filter_pre',1)
-luatexbase.add_to_callback('hyphenate',
- function (head,tail)
- return suppress_hyphenate_ja(head)
- end,'ltj.hyphenate')
+
+luatexja.pretreat = {
+ set_box_stack_level = set_box_stack_level,
+}
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