4 luatexbase.provides_module({
5 name = 'luatexja.jfont',
7 description = 'Loader for Japanese fonts',
9 module('luatexja.jfont', package.seeall)
11 luatexja.load_module('base'); local ltjb = luatexja.base
12 luatexja.load_module('charrange'); local ltjc = luatexja.charrange
14 local Dnode = node.direct or node
16 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
17 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
18 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
19 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
21 local nullfunc = function(n) return n end
22 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
24 local node_new = Dnode.new
25 local node_free = Dnode.free
26 local has_attr = Dnode.has_attribute
27 local set_attr = Dnode.set_attribute
28 local node_write = Dnode.write
29 local round = tex.round
30 local font_getfont = font.getfont
32 local attr_icflag = luatexbase.attributes['ltj@icflag']
33 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
34 local id_glyph = node.id('glyph')
35 local id_kern = node.id('kern')
36 local id_glue_spec = node.id('glue_spec')
37 local id_glue = node.id('glue')
38 local cat_lp = luatexbase.catcodetables['latex-package']
39 local ITALIC = luatexja.icflag_table.ITALIC
40 local FROM_JFM = luatexja.icflag_table.FROM_JFM
42 ------------------------------------------------------------------------
44 ------------------------------------------------------------------------
46 metrics={} -- this table stores all metric informations
47 font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
49 luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
51 local jfm_file_name, jfm_var
54 function define_jfm(t)
55 local real_char -- Does current character class have the 'real' character?
57 defjfm_res= nil; return
58 elseif type(t.zw)~='number' or type(t.zh)~='number' then
59 defjfm_res= nil; return
61 t.char_type = {}; t.chars = {}
62 for i,v in pairs(t) do
63 if type(i) == 'number' then -- char_type
65 if i ~= 0 then defjfm_res= nil; return end
69 for j,w in pairs(v.chars) do
70 if type(w) == 'number' then
72 elseif type(w) == 'string' and utf.len(w)==1 then
73 real_char = true; w = utf.byte(w)
74 elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
75 real_char = true; w = utf.byte(utf.sub(w,1,1))
76 if not t.chars[-w] then
79 defjfm_res= nil; return
82 if not t.chars[w] then
85 defjfm_res= nil; return
88 if type(v.align)~='string' then
89 v.align = 'left' -- left
92 if not (type(v.width)=='number' or v.width~='prop') then
93 defjfm_res= nil; return
95 if type(v.height)~='number' then
98 if type(v.depth)~='number' then
101 if type(v.italic)~='number' then
104 if type(v.left)~='number' then
107 if type(v.down)~='number' then
114 v.kern = v.kern or {}; v.glue = v.glue or {}
115 for j in pairs(v.glue) do
116 if v.kern[j] then defjfm_res= nil; return end
118 for j,x in pairs(v.kern) do
119 if type(x)=='number' then
121 elseif type(x)=='table' then
122 v.kern[j] = {x[1], x[2] or 0}
129 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
135 local function mult_table(old,scale) -- modified from table.fastcopy
138 for k,v in next, old do
139 if type(v) == "table" then
140 new[k] = mult_table(v,scale)
141 elseif type(v) == "number" then
142 new[k] = round(v*scale)
151 function update_jfm_cache(j,sz)
152 if metrics[j].size_cache[sz] then return end
154 metrics[j].size_cache[sz] = t
155 t.chars = metrics[j].chars
156 t.char_type = mult_table(metrics[j].char_type, sz)
157 for i,v in pairs(t.char_type) do
158 if type(i) == 'number' then -- char_type
159 for k,w in pairs(v.glue) do
160 local g, h = node_new(id_glue), node_new(id_glue_spec)
161 v[k] = {true, g, (w[5] and w[5]/sz or 0)}
162 setfield(h, 'width', w[1])
163 setfield(h, 'stretch', w[2])
164 setfield(h, 'shrink', w[3])
165 setfield(h, 'stretch_order', 0)
166 setfield(h, 'shrink_order', 0)
167 setfield(g, 'subtype', 0)
168 setfield(g, 'spec', h)
169 set_attr(g, attr_icflag, FROM_JFM + (w[4] and w[4]/sz or 0));
171 for k,w in pairs(v.kern) do
172 local g = node_new(id_kern)
173 setfield(g, 'kern', w[1])
174 setfield(g, 'subtype', 1)
175 set_attr(g, attr_icflag, FROM_JFM)
176 v[k] = {false, g, w[2]/sz}
180 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
181 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
182 t.zw = round(metrics[j].zw*sz)
183 t.zh = round(metrics[j].zh*sz)
186 local update_jfm_cache = update_jfm_cache
187 luatexbase.create_callback("luatexja.find_char_class", "data",
188 function (arg, fmtable, char)
192 function find_char_class(c,m)
193 -- c: character code, m:
194 if not m then return 0 end
196 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
200 ------------------------------------------------------------------------
201 -- LOADING JAPANESE FONTS
202 ------------------------------------------------------------------------
206 local global_flag -- true if \globaljfont, false if \jfont
207 local function load_jfont_metric()
208 if jfm_file_name=='' then
209 ltjb.package_error('luatexja',
211 'To load and define a Japanese font, a JFM must be specified.'..
212 "The JFM 'ujis' will be used for now.")
215 for j,v in ipairs(metrics) do
216 if v.name==jfm_file_name then return j end
218 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
220 defjfm_res.name = jfm_file_name
221 table.insert(metrics, defjfm_res)
229 function jfontdefX(g)
230 local t = token.get_next()
231 cstemp=token.csname_name(t)
232 global_flag = g and '\\global' or ''
233 tex.sprint(cat_lp, '\\expandafter\\font\\csname ' .. cstemp .. '\\endcsname')
236 luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
239 function jfontdefY() -- for horizontal font
240 local j = load_jfont_metric()
241 local fn = font.id(cstemp)
242 local f = font_getfont(fn)
244 ltjb.package_error('luatexja',
245 "bad JFM `" .. jfm_file_name .. "'",
246 'The JFM file you specified is not valid JFM file.\n'..
247 'So defining Japanese font is cancelled.')
248 tex.sprint(cat_lp, global_flag .. '\\expandafter\\let\\csname ' ..cstemp
249 .. '\\endcsname=\\relax')
252 update_jfm_cache(j, f.size)
253 local sz = metrics[j].size_cache[f.size]
254 local fmtable = { jfm = j, size = f.size, var = jfm_var,
255 zw = sz.zw, zh = sz.zh,
256 chars = sz.chars, char_type = sz.char_type,
257 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
260 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
261 font_metric_table[fn]=fmtable
262 tex.sprint(cat_lp, global_flag .. '\\protected\\expandafter\\def\\csname '
263 .. cstemp .. '\\endcsname{\\ltj@curjfnt=' .. fn .. '\\relax}')
270 local a = font_metric_table[tex.attribute[attr_curjfnt]]
271 tex.setdimen('ltj@zw', a and a.zw or 0)
275 local a = font_metric_table[tex.attribute[attr_curjfnt]]
276 tex.setdimen('ltj@zh', a and a.zh or 0)
281 -- extract jfm_file_name and jfm_var
282 local function extract_metric(name)
284 local tmp = utf.sub(basename, 1, 5)
285 jfm_file_name = ''; jfm_var = ''
286 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
287 basename = utf.sub(basename, 6)
289 local p = utf.find(basename, ":")
291 basename = utf.sub(basename, p+1)
294 -- now basename contains 'features' only.
297 local q = utf.find(basename, ";", p+1) or utf.len(basename)+1
298 if utf.sub(basename, p, p+3)=='jfm=' and q>p+4 then
299 jfm_file_name = utf.sub(basename, p+4, q-1)
300 elseif utf.sub(basename, p, p+6)=='jfmvar=' and q>p+6 then
301 jfm_var = utf.sub(basename, p+7, q-1)
303 if utf.len(basename)+1==q then p = nil else p = q + 1 end
308 -- replace fonts.define.read()
309 function font_callback(name, size, id, fallback)
311 -- In the present imple., we don't remove "jfm=..." from name.
312 return fallback(name, size, id)
316 ------------------------------------------------------------------------
318 ------------------------------------------------------------------------
320 local alt_font_table = alt_font_table
321 local attr_curaltfnt = {}
322 local ucs_out = 0x110000
324 ------ for TeX interface
326 function set_alt_font(b,e,ind,bfnt)
327 -- ind: 新フォント, bfnt: 基底フォント
328 if b>e then b, e = e, b end
330 ltjb.package_eror('luatexja',
331 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
332 'I take the intersection with [0x80, 0x10ffff].')
333 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
334 elseif e<0 then -- b<e<0
336 elseif b<0x80 or e>=ucs_out then
337 ltjb.package_warning('luatexja',
338 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
339 'I take the intersection with [0x80, 0x10ffff].')
340 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
342 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
343 local t = alt_font_table[bfnt]
344 local ac = font_getfont(ind).characters
345 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
346 if e>=0 then -- character range
348 if ac[i]then t[i]=ind end
352 local tx = font_metric_table[bfnt].chars
353 for i,v in pairs(tx) do
354 if b<=v and v<=e and ac[i] then t[i]=ind end
360 function clear_alt_font(bfnt)
361 if alt_font_table[bfnt] then
362 local t = alt_font_table[bfnt]
363 for i,_ in pairs(t) do t[i]=nil; end
367 ------ used in ltjp.suppress_hyphenate_ja callback
368 function replace_altfont(pf, pc)
369 return (alt_font_table[pf] and alt_font_table[pf][pc])
370 and alt_font_table[pf][pc] or pf
373 ------ for LaTeX interface
375 local alt_font_table_latex = {}
378 function clear_alt_font_latex(bbase)
379 local t = alt_font_table_latex[bbase]
381 for j,v in pairs(t) do t[j] = nil end
386 function set_alt_font_latex(b,e,ind,bbase)
387 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
388 if b>e then b, e = e, b end
390 ltjb.package_eror('luatexja',
391 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
392 'I take the intersection with [0x80, 0x10ffff].')
393 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
394 elseif e<0 then -- b<e<0
396 elseif b<0x80 or e>=ucs_out then
397 ltjb.package_warning('luatexja',
398 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
399 'I take the intersection with [0x80, 0x10ffff].')
400 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
403 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
404 local t = alt_font_table_latex[bbase]
405 if not t[ind] then t[ind] = {} end
407 for j,v in pairs(t) do
408 if v[i] then -- remove old entry
409 if j~=ind then v[i]=nil end; break
414 -- remove the empty tables
415 for j,v in pairs(t) do
416 local flag_clear = true
417 for k,_ in pairs(v) do flag_clear = false; break end
418 if flag_clear then t[j]=nil end
420 if ind==bbase then t[bbase] = nil end
423 -- ここから先は 新 \selectfont の内部でしか実行されない
425 local alt_font_base, alt_font_base_num
428 function print_aftl_address(bbase)
429 local t = alt_font_table_latex[bbase]
430 if not t then t = {}; alt_font_table_latex[bbase] = t end
431 tex.sprint(cat_lp, (tostring(t):gsub('table: ','ltjaltfont')))
434 function output_alt_font_cmd(bbase)
435 alt_font_base = bbase
436 alt_font_base_num = tex.getattribute(attr_curjfnt)
437 local t = alt_font_table[alt_font_base_num]
439 for i,_ in pairs(t) do t[i]=nil end
441 t = alt_font_table_latex[bbase]
443 for i,_ in pairs(t) do
444 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux{' .. i .. '}')
450 function pickup_alt_font_a(size_str)
451 local t = alt_font_table_latex[alt_font_base]
453 for i,v in pairs(t) do
454 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
455 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
460 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
461 local t = alt_font_table[alt_font_base_num]
462 local tx = font_metric_table[alt_font_base_num].chars
463 for i,v in pairs(tx) do
464 if v==class and afnt_chars[i] then t[i]=afnt_num end
469 function pickup_alt_font_b(afnt_num, afnt_base)
470 local t = alt_font_table[alt_font_base_num]
471 local ac = font_getfont(afnt_num).characters
472 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
473 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
474 if i == afnt_base then
475 for j,_ in pairs(v) do
477 if ac[j] then t[j]=afnt_num end
478 else -- -n (n>=1) means that the character class n,
479 -- which is defined in the JFM
480 pickup_alt_font_class(-j, afnt_num, ac)
491 ------------------------------------------------------------------------
493 ------------------------------------------------------------------------
495 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
496 -- EXT: italic correction
497 function append_italic()
498 local p = to_direct(tex.nest[tex.nest.ptr].tail)
499 if p and getid(p)==id_glyph then
501 local g = node_new(id_kern)
502 setfield(g, 'subtype', 1)
503 set_attr(g, attr_icflag, ITALIC)
504 if is_ucs_in_japanese_char(p) then
505 f = has_attr(p, attr_curjfnt)
506 local j = font_metric_table[f]
507 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
509 local h = font_getfont(f)
511 setfield(g, 'kern', h.characters[getchar(p)].italic)
513 tex.attribute[attr_icflag] = 0
518 tex.attribute[attr_icflag] = 0