luatexja-preset: use CJKShape=NLC/JIS1990.

[luatex-ja/luatexja.git] / src / ltj-pretreat.lua

diff --git a/src/ltj-pretreat.lua b/src/ltj-pretreat.lua
index aa8ddf4..6f72256 100644 (file)
--- a/src/ltj-pretreat.lua
+++ b/src/ltj-pretreat.lua
@@ -1,26 +1,19 @@
 --
--- 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)
 
 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
-luatexja.load_module('jfont');     local ltjf = luatexja.jfont
 luatexja.load_module('stack');     local ltjs = luatexja.stack
 
+local floor = math.floor
 local has_attr = node.has_attribute
 local set_attr = node.set_attribute
-local unset_attr = node.unset_attribute
+local node_traverse = node.traverse
 local node_type = node.type
 local node_remove = node.remove
 local node_next = node.next
 local node_free = node.free
+local tex_getcount = tex.getcount
 
 local id_glyph = node.id('glyph')
 local id_math = node.id('math')
@@ -29,61 +22,46 @@ local sid_user = node.subtype('user_defined')
 
 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 ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char
+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
 
 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
+   local non_math, p = true, head
+   wt = {}
+   while p do
+      local pid = p.id
+      if pid == id_glyph then
+        if (has_attr(p, attr_icflag) or 0)<=0 and ltjc_is_ucs_in_japanese_char(p) then
+           p.font = has_attr(p, attr_curjfnt) or p.font
+           p.subtype = floor(p.subtype*0.5)*2
+           set_attr(p, attr_orig_char, p.char)
         end
-      elseif p.id == id_math then 
-        non_math = (p.subtype ~= 0)
+      elseif pid == id_math then 
+        p = node_next(p) -- skip math on
+        while p and p.id~=id_math do p = node_next(p) end
+      elseif pid == id_whatsit and p.subtype==sid_user and p.user_id==STCK then
+        wt[#wt+1] = p; head = node_remove(head, p)
       end
+      p = node_next(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
-      end
-   end
-   if box_set then 
-      box_stack_level = tex.getcount('ltj@@stack') + 1 
-   else 
-      box_stack_level = tex.getcount('ltj@@stack') 
+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 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
 
@@ -100,3 +78,7 @@ 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,
+}