2 -- luatexja/ltj-otf.lua
7 luatexja.load_module('base'); local ltjb = luatexja.base
8 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
9 luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
10 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
11 luatexja.load_module('direction'); local ltjd = luatexja.direction
12 luatexja.load_module('stack'); local ltjs = luatexja.stack
14 local id_glyph = node.id('glyph')
15 local id_whatsit = node.id('whatsit')
16 local sid_user = node.subtype('user_defined')
18 local setfield = node.direct.setfield
19 local getfield = node.direct.getfield
20 local getid = node.direct.getid
21 local getfont = node.direct.getfont
22 local getchar = node.direct.getchar
23 local getsubtype = node.direct.getsubtype
25 local to_node = node.direct.tonode
26 local to_direct = node.direct.todirect
28 local node_new = node.direct.new
29 local node_remove = node.direct.remove
30 local node_next = node.direct.getnext
31 local node_free = node.direct.free
32 local has_attr = node.direct.has_attribute
33 local set_attr = node.direct.set_attribute
34 local unset_attr = node.direct.unset_attribute
35 local node_insert_after = node.direct.insert_after
36 local node_write = node.direct.write
37 local node_traverse_id = node.direct.traverse_id
40 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
41 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
42 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
43 local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
44 local attr_tablshift = luatexbase.attributes['ltj@tablshift']
45 local attr_tkblshift = luatexbase.attributes['ltj@tkblshift']
46 local lang_ja = luatexja.lang_ja
47 local identifiers = fonts.hashes.identifiers
49 local ltjf_font_metric_table = ltjf.font_metric_table
50 local ltjf_font_extra_info = ltjf.font_extra_info
51 local ltjf_find_char_class = ltjf.find_char_class
52 local ltjr_cidfont_data = ltjr.cidfont_data
53 local ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char
54 local ltjd_get_dir_count = ltjd.get_dir_count
55 local dir_tate = luatexja.dir_table.dir_tate
57 luatexja.userid_table.OTF = luatexbase.newuserwhatsitid('char_by_cid', 'luatexja')
58 local OTF = luatexja.userid_table.OTF
59 local tex_get_attr = tex.getattribute
62 local cache_outdate_fn = function (t) return t.version~=cache_ver end
63 local ivd_aj1 = ltjb.load_cache('ltj-ivd_aj1',cache_outdate_fn)
64 if not ivd_aj1 then -- make cache
65 ivd_aj1 = require('ltj-ivd_aj1.lua')
66 ltjb.save_cache_luc('ltj-ivd_aj1', ivd_aj1)
70 local function get_ucs_from_rmlgbm(c)
71 local v = (ivd_aj1 and ivd_aj1.table_ivd_aj1[c]
72 or ltjr_cidfont_data["Adobe-Japan1"].resources.unicodes["Japan1." .. tostring(c)])
74 if v>=0x200000 then -- table
75 local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
76 and attr_curtfnt or attr_curjfnt)
77 local curjfnt = identifiers[curjfnt_num].resources
78 local base, ivs = v % 0x200000, 0xE00FF + math.floor(v/0x200000)
79 curjfnt = curjfnt and curjfnt.variants
80 curjfnt = curjfnt and curjfnt[ivs]
81 return curjfnt and curjfnt[base] or base
82 elseif v<0xF0000 then -- 素直に Unicode にマップ可能
84 else -- privete use area
85 local w = ltjr_cidfont_data["Adobe-Japan1"].characters[v]. tounicode
87 local i = string.len(w)
92 i,w = tonumber(string.sub(w,1,4),16), tonumber(string.sub(w,-4),16)
93 if (w>=0xD800) and (w<=0xDB7F) and (i>=0xDC00) and (i<=0xDFFF) then -- Surrogate pair
94 r = (w-0xD800)*0x400 + (i-0xDC00)
99 if ltjr_cidfont_data["Adobe-Japan1"].shared.ltj_vert_table[r] then
101 local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
102 and attr_curtfnt or attr_curjfnt)
103 local t = identifiers[curjfnt_num]
104 if t.resources.sequences then
105 for _,i in pairs(t.resources.sequences) do
106 if (i.order[1]=='vert' or i.order[1]=='vrt2')
107 and i.type == 'gsub_single' and i.steps then
108 for _,j in pairs(i.steps) do
109 if type(j)=='table' then
110 if type(j.coverage)=='table' then
111 for i,k in pairs(j.coverage) do
112 if i==r then return k end
125 -- Append a whatsit node to the list.
126 -- This whatsit node will be extracted to a glyph_node
127 local function append_jglyph(char)
128 local p = node_new(id_whatsit,sid_user)
129 setfield(p, 'user_id', OTF)
130 setfield(p, 'type', 100)
131 setfield(p, 'value', char)
138 if key==0 then return append_jglyph(char) end
139 local curjfnt_num = tex_get_attr((ltjd_get_dir_count()==dir_tate)
140 and attr_curtfnt or attr_curjfnt)
141 local curjfnt = identifiers[curjfnt_num]
142 local cidinfo = curjfnt.resources.cidinfo
144 cidinfo.ordering ~= "Japan1" and
145 cidinfo.ordering ~= "GB1" and
146 cidinfo.ordering ~= "CNS1" and
147 cidinfo.ordering ~= "Korea1" and
148 cidinfo.ordering ~= "KR" then
149 -- ltjb.package_warning('luatexja-otf',
150 -- 'Current Japanese font (or other CJK font) "'
151 -- ..curjfnt.psname..'" is not a CID-Keyed font (Adobe-Japan1 etc.)')
152 return append_jglyph(get_ucs_from_rmlgbm(key))
154 local fe, char = ltjf_font_extra_info[curjfnt_num], nil
155 if fe and fe.unicodes then
156 char = fe.unicodes[cidinfo.ordering..'.'..tostring(key)]
159 ltjb.package_warning('luatexja-otf',
160 'Current Japanese font (or other CJK font) "'
161 ..curjfnt.psname..'" does not have the specified CID character ('
162 ..tostring(key)..')',
163 'Use a font including the specified CID character.')
166 return append_jglyph(char)
170 local function extract(head)
171 head = to_direct(head)
173 local is_dir_tate = ltjs.list_dir == dir_tate
174 local attr_ablshift = is_dir_tate and attr_tablshift or attr_yablshift
175 local attr_kblshift = is_dir_tate and attr_tkblshift or attr_ykblshift
176 local attr_curfnt = is_dir_tate and attr_curtfnt or attr_curjfnt
178 if getid(p)==id_whatsit then
179 if getsubtype(p)==sid_user then
180 local puid = getfield(p, 'user_id')
182 --if puid==OTF or puid==VSR then
183 local g = node_new(id_glyph)
184 setfield(g, 'subtype', 0)
185 setfield(g, 'char', getfield(p, 'value'))
186 local v = has_attr(p, attr_curfnt); setfield(g, 'font',v)
188 setfield(g, 'lang', lang_ja)
189 set_attr(g, attr_kblshift, has_attr(p, attr_kblshift))
191 -- set_attr(g, attr_ablshift, has_attr(p, attr_ablshift))
193 head = node_insert_after(head, p, g)
194 head = node_remove(head, p)
204 ltjb.add_to_callback('hpack_filter', extract,'ltj.otf',
205 luatexbase.priority_in_callback('hpack_filter', 'ltj.main'))
206 ltjb.add_to_callback('pre_linebreak_filter', extract,'ltj.otf',
207 luatexbase.priority_in_callback('pre_linebreak_filter', 'ltj.main'))
208 -- additional callbacks
209 -- 以下は,LuaTeX-ja に用意された callback のサンプルになっている.
210 -- 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.
211 -- 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
212 -- CID <-> グリフ 対応状況による変換テーブルが用意される.
214 -- 和文フォント読み込み時に,CID -> unicode 対応をとっておく.
215 local function cid_to_char(fmtable, fn)
216 local fi = identifiers[fn]
217 local fe = ltjf_font_extra_info[fn]
218 if (fi.resources and fi.resources.cidinfo and fi.resources.cidinfo.ordering == "Japan1" )
219 and (fe and fe.unicodes) then
220 for i, v in pairs(fmtable.chars) do
221 local j = string.match(i, "^AJ1%-([0-9]*)")
223 j = tonumber(fe.unicodes['Japan1.'..tostring(j)])
225 fmtable.cid_char_type = fmtable.cid_char_type or {}
226 fmtable.cid_char_type[j] = v
233 luatexbase.add_to_callback("luatexja.define_jfont",
234 cid_to_char, "ltj.otf.define_jfont", 1)
235 -- 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
236 for fn, v in pairs(ltjf_font_metric_table) do
237 ltjf_font_metric_table[fn] = cid_to_char(v, fn)
241 local function cid_set_char_class(arg, fmtable, char)
242 if arg~=0 then return arg
243 elseif fmtable.cid_char_type then
244 return fmtable.cid_char_type[char] or 0
248 luatexbase.add_to_callback("luatexja.find_char_class",
249 cid_set_char_class, "ltj.otf.find_char_class", 1)
252 local function enable_ivs()
253 ltjb.package_warning('luatexja-otf',
254 'luatexja.otf.enable_ivs() has now no effect.')
256 local disable_ivs = enable_ivs
259 append_jglyph = append_jglyph,
260 enable_ivs = enable_ivs, -- 隠し機能: IVS
261 disable_ivs = disable_ivs, -- 隠し機能: IVS