--
--- 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 setfield = node.direct.setfield
+local getfield = node.direct.getfield
+local getid = node.direct.getid
+local getfont = node.direct.getfont
+local getchar = node.direct.getchar
+local getsubtype = node.direct.getsubtype
+
+local to_node = node.direct.tonode
+local to_direct = node.direct.todirect
+
+local node_new = node.direct.new
+local node_remove = node.direct.remove
+local node_next = node.direct.getnext
+local node_free = node.direct.free
+local has_attr = node.direct.has_attribute
+local set_attr = node.direct.set_attribute
+local unset_attr = node.direct.unset_attribute
+local node_insert_after = node.direct.insert_after
+local node_write = node.direct.write
+local node_traverse_id = node.direct.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')
local OTF = luatexja.userid_table.OTF
+local tex_get_attr = tex.getattribute
+
+local cache_var = 2
+local cache_outdate_fn = function (t) return t.version~=cache_ver end
+local ivd_aj1 = ltjb.load_cache('ltj-ivd_aj1',cache_outdate_fn)
+if not ivd_aj1 then -- make cache
+ ivd_aj1 = require('ltj-ivd_aj1.lua')
+ ltjb.save_cache_luc('ltj-ivd_aj1', ivd_aj1)
+end
+
+
+local function get_ucs_from_rmlgbm(c)
+ local v = (ivd_aj1 and ivd_aj1.table_ivd_aj1[c]
+ or ltjr_cidfont_data["Adobe-Japan1"].resources.unicodes["Japan1." .. tostring(c)])
+ or 0
+ if v>=0x200000 then -- table
+ local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
+ and attr_curtfnt or attr_curjfnt)
+ local curjfnt = identifiers[curjfnt_num].resources
+ local base, ivs = v % 0x200000, 0xE00FF + math.floor(v/0x200000)
+ curjfnt = curjfnt and curjfnt.variants
+ curjfnt = curjfnt and curjfnt[ivs]
+ return curjfnt and curjfnt[base] or base
+ elseif v<0xF0000 then -- 素直に Unicode にマップ可能
+ return v
+ else -- privete use area
+ local r, aj = nil, ltjr_cidfont_data["Adobe-Japan1"]
+ -- 先に ltj_vert_table を見る
+ for i,w in pairs(aj.shared.ltj_vert_table) do
+ if w==v then r=i; break end
+ end
+ if not r then
+ -- なければ ToUnicode から引く
+ local w = aj.characters[v].tounicode -- must be non-nil!
+ local i = string.len(w)
+ if i==4 then -- UCS2
+ r = 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
+ r = (w-0xD800)*0x400 + (i-0xDC00)
+ else
+ r = 0
+ end
+ end
+ end
+ if aj.shared.ltj_vert_table[r] then
+ -- CID が縦組用字形だった場合
+ local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
+ and attr_curtfnt or attr_curjfnt)
+ local t = identifiers[curjfnt_num]
+ if t.resources.sequences then
+ for _,i in pairs(t.resources.sequences) do
+ if (i.order[1]=='vert' or i.order[1]=='vrt2')
+ and i.type == 'gsub_single' and i.steps then
+ for _,j in pairs(i.steps) do
+ if type(j)=='table' then
+ if type(j.coverage)=='table' then
+ for i,k in pairs(j.coverage) do
+ if i==r then return k end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ return r
+ 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
- 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" 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
+local utf
+do
+ utf = function (ucs)
+ local char = ucs
+ if ltjd_get_dir_count()==dir_tate then
+ local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
+ and attr_curtfnt or attr_curjfnt)
+ local t = identifiers[curjfnt_num]
+ if t.resources.sequences then
+ for _,i in pairs(t.resources.sequences) do
+ if (i.order[1]=='vert' or i.order[1]=='vrt2')
+ and i.type == 'gsub_single' and i.steps then
+ for _,j in pairs(i.steps) do
+ if type(j)=='table' then
+ if type(j.coverage)=='table' then
+ for i,k in pairs(j.coverage) do
+ if i==char then return append_jglyph(k) end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ end
+ return append_jglyph(char)
end
- local char = curjfnt.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
+end
+
+local cid
+do
+ cid = function (key)
+ if key==0 then return append_jglyph(0) end
+ local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
+ and attr_curtfnt or attr_curjfnt)
+ local curjfnt = identifiers[curjfnt_num]
+ local cidinfo = curjfnt.resources.cidinfo
+ if not cidinfo or
+ cidinfo.ordering ~= "Japan1" and
+ cidinfo.ordering ~= "GB1" and
+ cidinfo.ordering ~= "CNS1" and
+ cidinfo.ordering ~= "Korea1" and
+ cidinfo.ordering ~= "KR" 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 fe, char = ltjf_font_extra_info[curjfnt_num], nil
+ if fe and fe.unicodes then
+ char = fe.unicodes[cidinfo.ordering..'.'..tostring(key)]
+ end
+ 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 function extract(head)
+ head = to_direct(head)
local p = head
- local v
+ 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==OTF 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_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 then
+ --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]
- if fi.cidinfo and fi.cidinfo.ordering == "Japan1" then
- fmtable.cid_char_type = {}
+ local fi = identifiers[fn]
+ local fe = ltjf_font_extra_info[fn]
+ if (fi.resources and fi.resources.cidinfo and fi.resources.cidinfo.ordering == "Japan1" )
+ and (fe and fe.unicodes) then
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(fe.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
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 function enable_ivs()
+ ltjb.package_warning('luatexja-otf',
+ 'luatexja.otf.enable_ivs() has now no effect.')
+end
+local disable_ivs = enable_ivs
+
+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, utf = utf,
+}
+
+
-- EOF
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