--
--- luatexja/otf.lua
+-- luatexja/ltj-otf.lua
--
-luatexbase.provides_module({
- name = 'luatexja.otf',
- date = '2011/09/09',
- version = '0.1',
- description = 'The OTF Lua module for LuaTeX-ja',
-})
-module('luatexja.otf', package.seeall)
+require('unicode')
+require('lualibs')
luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('jfont'); local ltjf = luatexja.jfont
+luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
+luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+luatexja.load_module('direction'); local ltjd = luatexja.direction
+luatexja.load_module('stack'); local ltjs = luatexja.stack
local id_glyph = node.id('glyph')
local id_whatsit = node.id('whatsit')
local sid_user = node.subtype('user_defined')
-local node_new = node.new
-local node_remove = node.remove
-local node_next = node.next
-local node_free = node.free
-local has_attr = node.has_attribute
-local set_attr = node.set_attribute
-local unset_attr = node.unset_attribute
-local node_insert_after = node.insert_after
+local Dnode = node.direct or node
+
+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 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 node_new = Dnode.new
+local node_remove = Dnode.remove
+local node_next = (Dnode ~= node) and Dnode.getnext or node.next
+local node_free = Dnode.free
+local has_attr = Dnode.has_attribute
+local set_attr = Dnode.set_attribute
+local unset_attr = Dnode.unset_attribute
+local node_insert_after = Dnode.insert_after
+local node_write = Dnode.write
+local node_traverse_id = Dnode.traverse_id
+
local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
-local attr_jchar_class = luatexbase.attributes['ltj@charclass']
+local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
local attr_yablshift = luatexbase.attributes['ltj@yablshift']
local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
+local attr_tablshift = luatexbase.attributes['ltj@tablshift']
+local attr_tkblshift = luatexbase.attributes['ltj@tkblshift']
+local lang_ja = luatexja.lang_ja
+local identifiers = fonts.hashes.identifiers
local ltjf_font_metric_table = ltjf.font_metric_table
+local ltjf_font_extra_info = ltjf.font_extra_info
local ltjf_find_char_class = ltjf.find_char_class
+local ltjr_cidfont_data = ltjr.cidfont_data
+local ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char
+local ltjd_get_dir_count = ltjd.get_dir_count
+local dir_tate = luatexja.dir_table.dir_tate
+luatexja.userid_table.OTF = luatexbase.newuserwhatsitid('char_by_cid', 'luatexja')
+luatexja.userid_table.VSR = luatexbase.newuserwhatsitid('replace_vs', 'luatexja')
+local OTF, VSR = luatexja.userid_table.OTF, luatexja.userid_table.VSR
+
+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=30113; p.type=100; p.value=char
- set_attr(p, attr_yablshift, tex.attribute[attr_ykblshift])
- node.write(p)
+ setfield(p, 'user_id', OTF)
+ setfield(p, 'type', 100)
+ setfield(p, 'value', char)
+ node_write(p)
end
-function cid(key)
- local curjfnt = fonts.ids[tex.attribute[attr_curjfnt]]
- if curjfnt.cidinfo.ordering ~= "Japan1" then
- ltjb.package_error('luatexja-otf',
- 'Current Japanese font "'..curjfnt.psname..'" is not a CID-Keyed font (Adobe-Japan1)',
- 'Select a CID-Keyed font using \jfont.')
- return
- end
- local char = curjfnt.unicodes['Japan1.'..tostring(key)]
- if not char then
- ltjb.package_warning('luatexja-otf',
- 'Current Japanese font "'..curjfnt.psname..'" does not include the specified CID character ('..tostring(key)..')',
- 'Use a font including the specified CID character.')
- return
+local cid
+do
+ local tex_get_attr = tex.getattribute
+ cid = function (key)
+ if key==0 then return append_jglyph(char) end
+ local curjfnt = identifiers[tex_get_attr((ltjd_get_dir_count()==dir_tate)
+ and attr_curtfnt or attr_curjfnt)]
+ 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.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 have the specified CID character ('
+ ..tostring(key)..')',
+ 'Use a font including the specified CID character.')
+ char = 0
+ end
+ return append_jglyph(char)
end
- append_jglyph(char)
end
-function extract(head)
- local p = head, v
+local function extract(head)
+ head = to_direct(head)
+ local p = head
+ local is_dir_tate = ltjs.list_dir == dir_tate
+ local attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
+ local attr_kblshift = is_dir_tate and attr_tkblshift or attr_ykblshift
+ local attr_curfnt = is_dir_tate and attr_curtfnt or attr_curjfnt
while p do
- if p.id==id_whatsit then
- if p.subtype==sid_user and p.user_id==30113 then
- local g = node_new(id_glyph)
- g.subtype = 0; g.char = p.value
- v = has_attr(p, attr_curjfnt); g.font = v
- set_attr(g, attr_jchar_class,
- ltjf_find_char_class(g.char, ltjf_font_metric_table[v]))
- set_attr(g, attr_curjfnt, v)
- v = has_attr(p, attr_yablshift)
- if v then
- set_attr(g, attr_yablshift, v)
- else
- unset_attr(g, attr_yablshift)
- end
- head = node_insert_after(head, p, g)
- head = node_remove(head, p)
- node_free(p); p = g
- end
+ if getid(p)==id_whatsit then
+ if getsubtype(p)==sid_user then
+ local puid = getfield(p, 'user_id')
+ if puid==OTF or puid==VSR then
+ local g = node_new(id_glyph)
+ setfield(g, 'subtype', 0)
+ setfield(g, 'char', getfield(p, 'value'))
+ local v = has_attr(p, attr_curfnt); setfield(g, 'font',v)
+ if puid==OTF then
+ setfield(g, 'lang', lang_ja)
+ set_attr(g, attr_kblshift, has_attr(p, attr_kblshift))
+ else
+ set_attr(g, attr_ablshift, has_attr(p, attr_ablshift))
+ end
+ head = node_insert_after(head, p, g)
+ head = node_remove(head, p)
+ node_free(p); p = g
+ end
+ end
end
p = node_next(p)
end
- return head
+ return to_node(head)
end
-luatexbase.add_to_callback('hpack_filter',
- function (head) return extract(head) end,'ltj.hpack_filter_otf',
- luatexbase.priority_in_callback('pre_linebreak_filter',
- 'ltj.pre_linebreak_filter'))
-luatexbase.add_to_callback('pre_linebreak_filter',
- function (head) return extract(head) end, 'ltj.pre_linebreak_filter_otf',
- luatexbase.priority_in_callback('pre_linebreak_filter',
- 'ltj.pre_linebreak_filter'))
-
-
+ltjb.add_to_callback('hpack_filter', extract,'ltj.otf',
+ luatexbase.priority_in_callback('hpack_filter', 'ltj.main'))
+ltjb.add_to_callback('pre_linebreak_filter', extract,'ltj.otf',
+ luatexbase.priority_in_callback('pre_linebreak_filter', 'ltj.main'))
-- additional callbacks
-- 以下は，LuaTeX-ja に用意された callback のサンプルになっている．
-- JFM の文字クラスの指定の所で，"AJ1-xxx" 形式での指定を可能とした．
-- これらの文字指定は，和文フォント定義ごとに，それぞれのフォントの
-- CID <-> グリフ 対応状況による変換テーブルが用意される．
--- フォント読み込み時に，CID
+-- 和文フォント読み込み時に，CID -> unicode 対応をとっておく．
local function cid_to_char(fmtable, fn)
- local fi = fonts.ids[fn]
+ local fi = identifiers[fn]
if fi.cidinfo and fi.cidinfo.ordering == "Japan1" then
- fmtable.cid_char_type = {}
- for i, v in pairs(ltjf.metrics[fmtable.jfm].chars) do
+ 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
+ fmtable.cid_char_type = fmtable.cid_char_type or {}
+ fmtable.cid_char_type[j] = v
end
end
end
end
return fmtable
end
-luatexbase.add_to_callback("luatexja.define_jfont",
+luatexbase.add_to_callback("luatexja.define_jfont",
cid_to_char, "ltj.otf.define_jfont", 1)
-- 既に読み込まれているフォントに対しても，同じことをやらないといけない
for fn, v in pairs(ltjf_font_metric_table) do
local function cid_set_char_class(arg, fmtable, char)
if arg~=0 then return arg
- elseif fmtable.cid_char_type then
+ elseif fmtable.cid_char_type then
return fmtable.cid_char_type[char] or 0
else return 0
end
end
-luatexbase.add_to_callback("luatexja.find_char_class",
+luatexbase.add_to_callback("luatexja.find_char_class",
cid_set_char_class, "ltj.otf.find_char_class", 1)
--------------------- all done
+-------------------- IVS
+local enable_ivs, disable_ivs
+do
+ local is_ivs_enabled = false
+-- 組版時
+ local function ivs_jglyph(char, bp, pf, uid)
+ local p = node_new(id_whatsit,sid_user)
+ setfield(p, 'user_id', uid)
+ setfield(p, 'type', 100)
+ setfield(p, 'value', char)
+ return p
+ end
+
+ local function do_ivs_repr(h)
+ local head = to_direct(h)
+ local p, r = head
+ local is_dir_tate = (ltjs.list_dir == dir_tate)
+ local attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
+ local attr_kblshift = is_dir_tate and attr_tkblshift or attr_ykblshift
+ local attr_curfnt = is_dir_tate and attr_curtfnt or attr_curjfnt
+ while p do
+ local pid = getid(p)
+ if pid==id_glyph then
+ local q = node_next(p) -- the next node of p
+ if q and getid(q)==id_glyph then
+ local qc = getchar(q)
+ if (qc>=0xFE00 and qc<=0xFE0F) or (qc>=0xE0100 and qc<0xE01F0) then
+ -- q is a variation selector
+ if qc>=0xE0100 then qc = qc - 0xE0100 end
+ local pf = getfont(p)
+ local pt = ltjf_font_extra_info[pf]
+ pt = pt and pt[getchar(p)]; pt = pt and pt[qc]
+ head, r = node_remove(head,q)
+ node_free(q)
+ if pt then
+ local is_jachar = (getfield(p, 'lang')==lang_ja)
+ local np = ivs_jglyph(pt, p, pf,
+ is_jachar and OTF or VSR)
+ if is_jachar then
+ set_attr(np, attr_curfnt, pf)
+ set_attr(np, attr_kblshift, has_attr(p, attr_kblshift))
+ end
+ head = node_insert_after(head, p, np)
+ head = node_remove(head,p)
+ node_free(p)
+ end
+ p = r
+ else
+ p = q
+ end
+ else
+ p = node_next(p)
+ end
+ else
+ p = node_next(p)
+ end
+ end
+ return to_node(head)
+ end
+
+ enable_ivs = function ()
+ if is_ivs_enabled then
+ ltjb.package_warning('luatexja-otf',
+ 'luatexja.otf.enable_ivs() was already called, so this call is ignored', '')
+ else
+ ltjb.add_to_callback('hpack_filter', do_ivs_repr, 'ltj.do_ivs',
+ luatexbase.priority_in_callback('hpack_filter', 'luaotfload.node_processor'))
+ ltjb.add_to_callback('pre_linebreak_filter', do_ivs_repr, 'ltj.do_ivs',
+ luatexbase.priority_in_callback('pre_linebreak_filter', 'luaotfload.node_processor'))
+ is_ivs_enabled = true
+ end
+ end
+ disable_ivs = function ()
+ if is_ivs_enabled then
+ luatexbase.remove_from_callback('hpack_filter', 'ltj.do_ivs')
+ luatexbase.remove_from_callback('pre_linebreak_filter', 'ltj.do_ivs')
+ is_ivs_enabled = false
+ end
+ end
+end
+
+luatexja.otf = {
+ append_jglyph = append_jglyph,
+ enable_ivs = enable_ivs, -- 隠し機能: IVS
+ disable_ivs = disable_ivs, -- 隠し機能: IVS
+ cid = cid,
+}
+
-- EOF
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