4 luatexbase.provides_module({
7 description = 'The OTF Lua module for LuaTeX-ja',
10 luatexja.load_module('base'); local ltjb = luatexja.base
11 luatexja.load_module('jfont'); local ltjf = luatexja.jfont
12 luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
14 local id_glyph = node.id('glyph')
15 local id_whatsit = node.id('whatsit')
16 local sid_user = node.subtype('user_defined')
18 local node_new = node.new
19 local node_remove = node.remove
20 local node_next = node.next
21 local node_free = node.free
22 local has_attr = node.has_attribute
23 local set_attr = node.set_attribute
24 local unset_attr = node.unset_attribute
25 local node_insert_after = node.insert_after
27 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
28 local attr_jchar_class = luatexbase.attributes['ltj@charclass']
29 local attr_yablshift = luatexbase.attributes['ltj@yablshift']
30 local attr_ykblshift = luatexbase.attributes['ltj@ykblshift']
32 local ltjf_font_metric_table = ltjf.font_metric_table
33 local ltjf_find_char_class = ltjf.find_char_class
34 local ltjr_cidfont_data = ltjr.cidfont_data
36 local OTF = luatexja.userid_table.OTF
38 local function get_ucs_from_rmlgbm(c)
39 local v = ltjr_cidfont_data["Adobe-Japan1"].resources.unicodes["Japan1." .. tostring(c)]
40 if not v then -- AJ1 範囲外
42 elseif v<0xF0000 then -- 素直に Unicode にマップ可能
45 local w = ltjr_cidfont_data["Adobe-Japan1"].characters[v]. tounicode
47 local i = string.len(w)
51 i,w = tonumber(string.sub(w,1,4),16), tonumber(string.sub(w,-4),16)
52 if (w>=0xD800) and (w<=0xDB7F) and (i>=0xDC00) and (i<=0xDFFF) then -- Surrogate pair
53 return (w-0xD800)*0x400 + (i-0xDC00)
61 -- Append a whatsit node to the list.
62 -- This whatsit node will be extracted to a glyph_node
63 local function append_jglyph(char)
64 local p = node_new(id_whatsit,sid_user)
65 local v = tex.attribute[attr_curjfnt]
66 p.user_id=OTF; p.type=100; p.value=char
67 set_attr(p, attr_yablshift, tex.attribute[attr_ykblshift])
71 local function cid(key)
72 if key==0 then return append_jglyph(char) end
73 local curjfnt = fonts.ids[tex.attribute[attr_curjfnt]]
74 if not curjfnt.cidinfo or
75 curjfnt.cidinfo.ordering ~= "Japan1" and
76 curjfnt.cidinfo.ordering ~= "GB1" and
77 curjfnt.cidinfo.ordering ~= "CNS1" and
78 curjfnt.cidinfo.ordering ~= "Korea1" then
79 -- ltjb.package_warning('luatexja-otf',
80 -- 'Current Japanese font (or other CJK font) "'
81 -- ..curjfnt.psname..'" is not a CID-Keyed font (Adobe-Japan1 etc.)')
82 return append_jglyph(get_ucs_from_rmlgbm(key))
84 local char = curjfnt.resources.unicodes[curjfnt.cidinfo.ordering..'.'..tostring(key)]
86 ltjb.package_warning('luatexja-otf',
87 'Current Japanese font (or other CJK font) "'
88 ..curjfnt.psname..'" does not have the specified CID character ('
90 'Use a font including the specified CID character.')
93 return append_jglyph(char)
96 local function extract(head)
100 if p.id==id_whatsit then
101 if p.subtype==sid_user and p.user_id==OTF then
102 local g = node_new(id_glyph)
103 g.subtype = 0; g.char = p.value
104 v = has_attr(p, attr_curjfnt); g.font = v
105 set_attr(g, attr_curjfnt, v)
106 v = has_attr(p, attr_yablshift)
108 set_attr(g, attr_yablshift, v)
110 unset_attr(g, attr_yablshift)
112 head = node_insert_after(head, p, g)
113 head = node_remove(head, p)
122 luatexbase.add_to_callback('hpack_filter',
123 function (head) return extract(head) end,'ltj.hpack_filter_otf',
124 luatexbase.priority_in_callback('pre_linebreak_filter',
125 'ltj.pre_linebreak_filter'))
126 luatexbase.add_to_callback('pre_linebreak_filter',
127 function (head) return extract(head) end, 'ltj.pre_linebreak_filter_otf',
128 luatexbase.priority_in_callback('pre_linebreak_filter',
129 'ltj.pre_linebreak_filter'))
132 -- additional callbacks
133 -- 以下は,LuaTeX-ja に用意された callback のサンプルになっている.
134 -- 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.
135 -- 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
136 -- CID <-> グリフ 対応状況による変換テーブルが用意される.
139 local function cid_to_char(fmtable, fn)
140 local fi = fonts.ids[fn]
141 if fi.cidinfo and fi.cidinfo.ordering == "Japan1" then
142 fmtable.cid_char_type = {}
143 for i, v in pairs(fmtable.chars) do
144 local j = string.match(i, "^AJ1%-([0-9]*)")
146 j = tonumber(fi.resources.unicodes['Japan1.'..tostring(j)])
148 fmtable.cid_char_type[j] = v
155 luatexbase.add_to_callback("luatexja.define_jfont",
156 cid_to_char, "ltj.otf.define_jfont", 1)
157 -- 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
158 for fn, v in pairs(ltjf_font_metric_table) do
159 ltjf_font_metric_table[fn] = cid_to_char(v, fn)
163 local function cid_set_char_class(arg, fmtable, char)
164 if arg~=0 then return arg
165 elseif fmtable.cid_char_type then
166 return fmtable.cid_char_type[char] or 0
170 luatexbase.add_to_callback("luatexja.find_char_class",
171 cid_set_char_class, "ltj.otf.find_char_class", 1)
173 -------------------- all done
175 append_jglyph = append_jglyph,