luatexja-preset: use CJKShape=NLC/JIS1990.

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

diff --git a/src/ltj-otf.lua b/src/ltj-otf.lua
index c16e15b..faef663 100644 (file)
--- a/src/ltj-otf.lua
+++ b/src/ltj-otf.lua
@@ -3,14 +3,13 @@
 --
 luatexbase.provides_module({
   name = 'luatexja.otf',
-  date = '2011/09/09',
-  version = '0.1',
+  date = '2013/05/11',
   description = 'The OTF Lua module for LuaTeX-ja',
 })
-module('luatexja.otf', package.seeall)
 
 luatexja.load_module('base');      local ltjb = luatexja.base
 luatexja.load_module('jfont');     local ltjf = luatexja.jfont
+luatexja.load_module('rmlgbm');    local ltjr = luatexja.rmlgbm
 
 local id_glyph = node.id('glyph')
 local id_whatsit = node.id('whatsit')
@@ -32,12 +31,36 @@ local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
 
 local ltjf_font_metric_table = ltjf.font_metric_table
 local ltjf_find_char_class = ltjf.find_char_class
+local ltjr_cidfont_data = ltjr.cidfont_data
 
 local OTF = luatexja.userid_table.OTF
 
+local function get_ucs_from_rmlgbm(c)
+   local v = ltjr_cidfont_data["Adobe-Japan1"].resources.unicodes["Japan1." .. tostring(c)]
+   if not v then -- AJ1 範囲外
+      return 0
+   elseif v<0xF0000 then -- 素直に Unicode にマップ可能
+      return v
+   else
+      local w = ltjr_cidfont_data["Adobe-Japan1"].characters[v]. tounicode
+      -- must be non-nil!
+      local i = string.len(w)
+      if i==4 then -- UCS2
+         return tonumber(w,16)
+      elseif i==8 then 
+         i,w = tonumber(string.sub(w,1,4),16), tonumber(string.sub(w,-4),16)
+         if (w>=0xD800) and (w<=0xDB7F) and (i>=0xDC00) and (i<=0xDFFF) then -- Surrogate pair
+            return (w-0xD800)*0x400 + (i-0xDC00)
+         else
+            return 0
+         end
+      end
+   end
+end
+
 -- Append a whatsit node to the list.
 -- This whatsit node will be extracted to a glyph_node
-function append_jglyph(char)
+local function append_jglyph(char)
    local p = node_new(id_whatsit,sid_user)
    local v = tex.attribute[attr_curjfnt]
    p.user_id=OTF; p.type=100; p.value=char
@@ -45,28 +68,32 @@ function append_jglyph(char)
    node.write(p)
 end
 
-function cid(key)
+local function cid(key)
+   if key==0 then return append_jglyph(char) end
    local curjfnt = fonts.ids[tex.attribute[attr_curjfnt]]
-   if curjfnt.cidinfo.ordering ~= "Japan1" and
-          curjfnt.cidinfo.ordering ~= "GB1" and
-          curjfnt.cidinfo.ordering ~= "CNS1" and
-          curjfnt.cidinfo.ordering ~= "Korea1" then
-      ltjb.package_error('luatexja-otf',
-                         'Current Japanese font (or other CJK font) "'..curjfnt.psname..'" is not a CID-Keyed font (Adobe-Japan1 etc.)', 
-                         'Select a CID-Keyed font using \\jfont.')
-      return
+   if not curjfnt.cidinfo or 
+      curjfnt.cidinfo.ordering ~= "Japan1" and
+      curjfnt.cidinfo.ordering ~= "GB1" and
+      curjfnt.cidinfo.ordering ~= "CNS1" and
+      curjfnt.cidinfo.ordering ~= "Korea1" then
+--      ltjb.package_warning('luatexja-otf',
+--                        'Current Japanese font (or other CJK font) "'
+--                           ..curjfnt.psname..'" is not a CID-Keyed font (Adobe-Japan1 etc.)')
+      return append_jglyph(get_ucs_from_rmlgbm(key))
    end
-   local char = curjfnt.unicodes[curjfnt.cidinfo.ordering..'.'..tostring(key)]
+   local char = curjfnt.resources.unicodes[curjfnt.cidinfo.ordering..'.'..tostring(key)]
    if not char then
       ltjb.package_warning('luatexja-otf',
-                         'Current Japanese font (or other CJK font) "'..curjfnt.psname..'" does not include the specified CID character ('..tostring(key)..')', 
-                         'Use a font including the specified CID character.')
-      return
+                           'Current Japanese font (or other CJK font) "'
+                              ..curjfnt.psname..'" does not have the specified CID character ('
+                              ..tostring(key)..')', 
+                           'Use a font including the specified CID character.')
+      char = 0
    end
-   append_jglyph(char)
+   return append_jglyph(char)
 end
 
-function extract(head)
+local function extract(head)
    local p = head
    local v
    while p do
@@ -116,7 +143,7 @@ local function cid_to_char(fmtable, fn)
       for i, v in pairs(fmtable.chars) do
         local j = string.match(i, "^AJ1%-([0-9]*)")
         if j then
-           j = tonumber(fi.unicodes['Japan1.'..tostring(j)])
+           j = tonumber(fi.resources.unicodes['Japan1.'..tostring(j)])
            if j then
               fmtable.cid_char_type[j] = v 
            end
@@ -144,4 +171,9 @@ luatexbase.add_to_callback("luatexja.find_char_class",
                           cid_set_char_class, "ltj.otf.find_char_class", 1)
 
 -------------------- all done
+luatexja.otf = {
+  append_jglyph = append_jglyph,
+  cid = cid,
+}
+
 -- EOF