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
13 luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm
14 luatexja.load_module('direction'); local ltjd = luatexja.direction
16 local setfield = node.direct.setfield
17 local getid = node.direct.getid
18 local to_direct = node.direct.todirect
20 local node_new = node.direct.new
21 local node_free = node.direct.free
22 local has_attr = node.direct.has_attribute
23 local set_attr = node.direct.set_attribute
24 local round = tex.round
25 local font_getfont = font.getfont
27 local attr_icflag = luatexbase.attributes['ltj@icflag']
28 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
29 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
30 local id_glyph = node.id('glyph')
31 local id_kern = node.id('kern')
32 local cat_lp = luatexbase.catcodetables['latex-package']
33 local FROM_JFM = luatexja.icflag_table.FROM_JFM
34 ------------------------------------------------------------------------
36 ------------------------------------------------------------------------
38 metrics={} -- this table stores all metric informations
39 font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
41 luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
43 local jfm_file_name, jfm_var, jfm_ksp
45 local jfm_dir, is_def_jfont, is_vert_enabled
47 local function norm_val(a)
48 if (not a) or (a==0.) then
57 function define_jfm(t)
58 local real_char -- Does current character class have the 'real' character?
59 if t.dir~=jfm_dir then
60 defjfm_res= nil; return
61 elseif type(t.zw)~='number' or type(t.zh)~='number' then
62 defjfm_res= nil; return
64 t.char_type = {}; t.chars = {}
65 for i,v in pairs(t) do
66 if type(i) == 'number' then -- char_type
68 if i ~= 0 then defjfm_res= nil; return end
70 for j,w in pairs(v.chars) do
71 if type(w) == 'number' and w~=-1 then
72 elseif type(w) == 'string' and utf.len(w)==1 then
74 elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
75 w = utf.byte(utf.sub(w,1,1))
77 if not t.chars[w] then
80 defjfm_res= nil; return
85 if type(v.align)~='string' then
86 v.align = 'left' -- left
88 if type(v.width)~='number' then
89 v.width = (jfm_dir=='tate') and 1.0
91 if type(v.height)~='number' then
92 v.height = (jfm_dir=='tate') and 0.0
94 if type(v.depth)~='number' then
95 v.depth = (jfm_dir=='tate') and 0.0
97 if type(v.italic)~='number' then
100 if type(v.left)~='number' then
103 if type(v.down)~='number' then
106 v.kern = v.kern or {}; v.glue = v.glue or {}
107 for j,x in pairs(v.glue) do
108 if v.kern[j] then defjfm_res= nil; return end
109 x.ratio, x[5] = (x.ratio or (x[5] and 0.5*(1+x[5]) or 0.5)), nil
110 x.priority, x[4] = (x.priority or x[4] or 0), nil
111 x.kanjiskip_natural = norm_val(x.kanjiskip_natural)
112 x.kanjiskip_stretch = norm_val(x.kanjiskip_stretch)
113 x.kanjiskip_shrink = norm_val(x.kanjiskip_shrink)
115 for j,x in pairs(v.kern) do
116 if type(x)=='number' then
118 elseif type(x)=='table' then
119 v.kern[j] = { x[1], ratio=x.ratio or (x[2] and 0.5*(1+x[2]) or 0.5) }
126 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
131 local update_jfm_cache
133 local function mult_table(old,scale) -- modified from table.fastcopy
136 for k,v in next, old do
137 if type(v) == "table" then
138 new[k] = mult_table(v,scale)
139 elseif type(v) == "number" then
140 new[k] = round(v*scale)
148 update_jfm_cache = function (j,sz)
149 if metrics[j].size_cache[sz] then return end
150 --local TEMP = node_new(id_kern)
152 metrics[j].size_cache[sz] = t
153 t.chars = metrics[j].chars
154 t.char_type = mult_table(metrics[j].char_type, sz)
155 for i,v in pairs(t.char_type) do
156 v.align = (v.align=='left') and 0 or
157 ((v.align=='right') and 1 or 0.5)
158 if type(i) == 'number' then -- char_type
159 for k,w in pairs(v.glue) do
163 priority=FROM_JFM + w.priority/sz,
164 width = w[1], stretch = w[2], shrink = w[3],
165 kanjiskip_natural = w.kanjiskip_natural and w.kanjiskip_natural/sz,
166 kanjiskip_stretch = w.kanjiskip_stretch and w.kanjiskip_stretch/sz,
167 kanjiskip_shrink = w.kanjiskip_shrink and w.kanjiskip_shrink/sz,
170 for k,w in pairs(v.kern) do
171 local g = node_new(id_kern, 1)
172 setfield(g, 'kern', w[1])
173 set_attr(g, attr_icflag, FROM_JFM)
174 v[k] = {g, ratio=w[2]/sz}
177 v.glue, v.kern = nil, nil
179 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
180 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
181 t.zw = round(metrics[j].zw*sz)
182 t.zh = round(metrics[j].zh*sz)
188 luatexbase.create_callback("luatexja.find_char_class", "data",
189 function (arg, fmtable, char)
193 local start_time_measure = ltjb.start_time_measure
194 local stop_time_measure = ltjb.stop_time_measure
195 local fcc_temp = { chars_cbcache = {} }
197 fcc_temp.chars_cbcache,
199 __index = function () return 0 end,
201 function find_char_class(c,m)
202 -- c: character code, m:
203 local r = (m or fcc_temp).chars_cbcache[c]
206 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
207 m.chars_cbcache[c or 0] = r
214 ------------------------------------------------------------------------
215 -- LOADING JAPANESE FONTS
216 ------------------------------------------------------------------------
220 local global_flag -- true if \globaljfont, false if \jfont
221 local function load_jfont_metric()
222 if jfm_file_name=='' then
223 ltjb.package_error('luatexja',
225 'To load and define a Japanese font, a JFM must be specified.'..
226 "The JFM 'ujis' will be used for now.")
229 for j,v in ipairs(metrics) do
230 if v.name==jfm_file_name then return j end
232 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
234 defjfm_res.name = jfm_file_name
235 table.insert(metrics, defjfm_res)
243 local utf8 = unicode.utf8
244 function jfontdefX(g, dir, csname)
245 jfm_dir, is_def_jfont = dir, true
246 cstemp = csname:sub( (utf8.byte(csname,1,1) == tex.escapechar) and 2 or 1, -1)
247 cstemp = cstemp:sub(1, ((cstemp:sub(-1,-1)==' ') and (cstemp:len()>=2)) and -2 or -1)
248 global_flag = g and '\\global' or ''
249 tex.sprint(cat_lp, '\\expandafter\\font\\csname ',
250 (cstemp==' ') and '\\space' or cstemp, '\\endcsname')
253 luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
256 local identifiers = fonts.hashes.identifiers
258 local j = load_jfont_metric(jfm_dir)
259 local fn = font.id(cstemp)
260 local f = font_getfont(fn)
262 ltjb.package_error('luatexja',
263 "bad JFM `" .. jfm_file_name .. "'",
264 'The JFM file you specified is not valid JFM file.\n'..
265 'So defining Japanese font is cancelled.')
266 tex.sprint(cat_lp, global_flag, '\\expandafter\\let\\csname ',
267 (cstemp==' ') and '\\space' or cstemp,
268 '\\endcsname=\\relax')
271 if not f then return end
272 update_jfm_cache(j, f.size)
273 local ad = identifiers[fn].parameters
274 local sz = metrics[j].size_cache[f.size]
275 local fmtable = { jfm = j, size = f.size, var = jfm_var,
276 with_kanjiskip = jfm_ksp,
277 zw = sz.zw, zh = sz.zh,
278 ascent = ad.ascender,
279 descent = ad.descender,
280 chars = sz.chars, char_type = sz.char_type,
281 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
283 vert_activated = is_vert_enabled,
286 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
287 font_metric_table[fn]=fmtable
288 tex.sprint(cat_lp, global_flag, '\\protected\\expandafter\\def\\csname ',
289 (cstemp==' ') and '\\space' or cstemp, '\\endcsname{\\ltj@cur'..
290 (jfm_dir == 'yoko' and 'j' or 't') .. 'fnt', fn, '\\relax}')
295 local get_dir_count = ltjd.get_dir_count
296 local dir_tate = luatexja.dir_table.dir_tate
297 local tex_get_attr = tex.getattribute
300 local a = font_metric_table[
301 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
302 return a and a.zw or 0
305 local a = font_metric_table[
306 tex_get_attr((get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)]
307 return a and a.zw or 0
312 -- extract jfm_file_name and jfm_var
313 -- normalize position of 'jfm=' and 'jfmvar=' keys
314 local function extract_metric(name)
315 local is_braced = name:match('^{(.*)}$')
316 name= is_braced or name
317 jfm_file_name = ''; jfm_var = ''; jfm_ksp = true
318 local tmp, index = name:sub(1, 5), 1
319 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
322 local p = name:find(":", index); index = p and (p+1) or index
324 local l = name:len()+1
325 local q = name:find(";", index+1) or l
326 if name:sub(index, index+3)=='jfm=' and q>index+4 then
327 jfm_file_name = name:sub(index+4, q-1)
329 name = name:sub(1,index-1) .. name:sub(q+1)
331 name = name:sub(1,index-1)
334 elseif name:sub(index, index+6)=='jfmvar=' and q>index+6 then
335 jfm_var = name:sub(index+7, q-1)
337 name = name:sub(1,index-1) .. name:sub(q+1)
339 name = name:sub(1,index-1)
343 index = (l~=q) and (q+1) or nil
346 if jfm_file_name~='' then
347 local l = name:sub(-1)
349 .. ((l==':' or l==';') and '' or ';')
350 .. 'jfm=' .. jfm_file_name
352 name = name .. 'jfmvar=' .. jfm_var
355 for x in string.gmatch (name, "[:;]([+%%-]?)ltjks") do
356 jfm_ksp = not (x=='-')
358 if jfm_dir == 'tate' then
359 is_vert_enabled = (not name:match('[:;]%-vert')) and (not name:match('[:;]%-vrt2'))
360 if not name:match('vert') and not name:match('vrt2') then
361 name = name .. ';+vert;+vrt2'
364 is_vert_enabled = nil
366 return is_braced and ('{' .. name .. '}') or name
369 -- define_font callback
371 local ltjr_font_callback = ltjr.font_callback
372 function luatexja.font_callback(name, size, id)
373 local new_name = is_def_jfont and extract_metric(name) or name
375 local res = ltjr_font_callback(new_name, size, id, otfl_fdr)
376 luatexbase.call_callback('luatexja.define_font', res, new_name, size, id)
377 -- this callback processes variation selector, so we execute it always
380 luatexbase.create_callback('luatexja.define_font', 'simple', function (n) return n end)
381 otfl_fdr= luatexbase.remove_from_callback('define_font', 'luaotfload.define_font')
382 luatexbase.add_to_callback('define_font',luatexja.font_callback,"luatexja.font_callback", 1)
385 ------------------------------------------------------------------------
387 ------------------------------------------------------------------------
389 -- these function are called from ltj-latex.sty
390 local fenc_list, kyenc_list, ktenc_list = {}, {}, {}
391 function add_fenc_list(enc) fenc_list[enc] = 'true ' end
392 function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
393 function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
394 function is_kyenc(enc)
395 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
397 function is_ktenc(enc)
398 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
400 function is_kenc(enc)
401 tex.sprint(cat_lp, '\\let\\ifin@\\if'
402 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
405 local kfam_list, Nkfam_list = {}, {}
406 function add_kfam(fam)
409 function search_kfam(fam, use_fd)
410 if kfam_list[fam] then
411 tex.sprint(cat_lp, '\\let\\ifin@\\iftrue '); return
412 elseif Nkfam_list[fam] then
413 tex.sprint(cat_lp, '\\let\\ifin@\\iffalse '); return
415 for i,_ in pairs(kyenc_list) do
416 if kpse.find_file(string.lower(i)..fam..'.fd') then
417 tex.sprint(cat_lp, '\\let\\ifin@\\iftrue '); return
420 for i,_ in pairs(ktenc_list) do
421 if kpse.find_file(string.lower(i)..fam..'.fd') then
422 tex.sprint(cat_lp, '\\let\\ifin@\\iftrue '); return
425 Nkfam_list[fam]=true; tex.sprint(cat_lp, '\\let\\ifin@\\iffalse '); return
427 tex.sprint(cat_lp, '\\let\\ifin@\\iffalse '); return
430 local ffam_list, Nffam_list = {}, {}
431 function is_ffam(fam)
432 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ffam_list[fam] or 'false '))
434 function add_ffam(fam)
435 ffam_list[fam]='true '
437 function search_ffam_declared()
439 for i,_ in pairs(fenc_list) do
440 s = s .. '\\cdp@elt{' .. i .. '}'
442 tex.sprint(cat_lp, s)
444 function search_ffam_fd(fam)
445 if Nffam_list[fam] then
446 tex.sprint(cat_lp, '\\let\\ifin@\\iffalse '); return
448 for i,_ in pairs(fenc_list) do
449 if kpse.find_file(string.lower(i)..fam..'.fd') then
450 tex.sprint(cat_lp, '\\let\\ifin@\\iftrue '); return
453 Nffam_list[fam]=true; tex.sprint(cat_lp, '\\let\\ifin@\\iffalse '); return
458 ------------------------------------------------------------------------
460 ------------------------------------------------------------------------
462 local alt_font_table = alt_font_table
463 local attr_curaltfnt = {}
464 local ucs_out = 0x110000
466 ------ for TeX interface
468 function set_alt_font(b,e,ind,bfnt)
469 -- ind: 新フォント, bfnt: 基底フォント
470 if b>e then b, e = e, b end
472 ltjb.package_error('luatexja',
473 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
474 'I take the intersection with [0x80, 0x10ffff].')
475 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
476 elseif e<0 then -- b<e<0
478 elseif b<0x80 or e>=ucs_out then
479 ltjb.package_warning('luatexja',
480 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
481 'I take the intersection with [0x80, 0x10ffff].')
482 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
484 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
485 local t = alt_font_table[bfnt]
486 local ac = font_getfont(ind).characters
487 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
488 if e>=0 then -- character range
490 if ac[i]then t[i]=ind end
494 local tx = font_metric_table[bfnt].chars
495 for i,v in pairs(tx) do
496 if b<=v and v<=e and ac[i] then t[i]=ind end
502 function clear_alt_font(bfnt)
503 if alt_font_table[bfnt] then
504 local t = alt_font_table[bfnt]
505 for i,_ in pairs(t) do t[i]=nil; end
509 ------ used in ltjp.suppress_hyphenate_ja callback
510 function replace_altfont(pf, pc)
511 local a = alt_font_table[pf]
512 return a and a[pc] or pf
515 ------ for LaTeX interface
517 local alt_font_table_latex = {}
520 function clear_alt_font_latex(bbase)
521 local t = alt_font_table_latex[bbase]
523 for j,v in pairs(t) do t[j] = nil end
528 function set_alt_font_latex(b,e,ind,bbase)
529 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
530 if b>e then b, e = e, b end
532 ltjb.package_error('luatexja',
533 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
534 'I take the intersection with [0x80, 0x10ffff].')
535 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
536 elseif e<0 then -- b<e<0
538 elseif b<0x80 or e>=ucs_out then
539 ltjb.package_warning('luatexja',
540 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
541 'I take the intersection with [0x80, 0x10ffff].')
542 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
545 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
546 local t = alt_font_table_latex[bbase]
547 if not t[ind] then t[ind] = {} end
549 for j,v in pairs(t) do
550 if v[i] then -- remove old entry
551 if j~=ind then v[i]=nil end; break
556 -- remove the empty tables
557 for j,v in pairs(t) do
558 local flag_clear = true
559 for k,_ in pairs(v) do flag_clear = false; break end
560 if flag_clear then t[j]=nil end
562 if ind==bbase then t[bbase] = nil end
565 -- ここから先は 新 \selectfont の内部でしか実行されない
567 local alt_font_base, alt_font_base_num
570 function does_alt_set(bbase)
571 aftl_base = alt_font_table_latex[bbase]
572 tex.sprint(cat_lp, '\\if' .. (aftl_base and 'true' or 'false'))
575 function print_aftl_address()
576 tex.sprint(cat_lp, ';ltjaltfont' .. tostring(aftl_base):sub(8))
580 function output_alt_font_cmd(dir, bbase)
581 alt_font_base = bbase
583 alt_font_base_num = tex.getattribute(attr_curtfnt)
585 alt_font_base_num = tex.getattribute(attr_curjfnt)
587 local t = alt_font_table[alt_font_base_num]
589 for i,_ in pairs(t) do t[i]=nil end
591 t = alt_font_table_latex[bbase]
593 for i,_ in pairs(t) do
594 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux' .. dir .. '{' .. i .. '}')
600 function pickup_alt_font_a(size_str)
601 local t = alt_font_table_latex[alt_font_base]
603 for i,v in pairs(t) do
604 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
605 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
610 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
611 local t = alt_font_table[alt_font_base_num]
612 local tx = font_metric_table[alt_font_base_num].chars
613 for i,v in pairs(tx) do
614 if v==class and afnt_chars[i] then t[i]=afnt_num end
619 function pickup_alt_font_b(afnt_num, afnt_base)
620 local t = alt_font_table[alt_font_base_num]
621 local ac = font_getfont(afnt_num).characters
622 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
623 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
624 if i == afnt_base then
625 for j,_ in pairs(v) do
627 if ac[j] then t[j]=afnt_num end
628 else -- -n (n>=1) means that the character class n,
629 -- which is defined in the JFM
630 pickup_alt_font_class(-j, afnt_num, ac)
639 ------------------------------------------------------------------------
641 ------------------------------------------------------------------------
643 function cleanup_size_cache()
644 --local gs, ke = 0, 0
645 for _,n in pairs(metrics) do
646 for i,t in pairs(n.size_cache) do
647 for _,v in pairs(t.char_type) do
648 for k,w in pairs(v) do
649 if type(k)=='number' then
650 --if w[1] then gs = gs + 1 else ke = ke + 1 end
651 if w[1] then node_free(w[1]) end
661 ------------------------------------------------------------------------
662 -- VERT VARIANT TABLE
663 ------------------------------------------------------------------------
664 local vert_form_table = {
665 [0x2013]=0xFE32, [0x2014]=0xFE31, [0x2025]=0xFE30,
666 [0xFF08]=0xFE35, [0xFF09]=0xFE36, [0xFF5B]=0xFE37, [0xFF5D]=0xFE38,
667 [0x3014]=0xFE39, [0x3015]=0xFE3A, [0x3010]=0xFE3B, [0x3011]=0xFE3C,
668 [0x300A]=0xFE3D, [0x300B]=0xFE3E, [0x3008]=0xFE3F, [0x3009]=0xFE40,
669 [0x300C]=0xFE41, [0x300D]=0xFE42, [0x300E]=0xFE43, [0x300F]=0xFE44,
670 [0xFF3B]=0xFE47, [0xFF3D]=0xFE48, [0xFF3F]=0xFE33,
673 ------------------------------------------------------------------------
675 ------------------------------------------------------------------------
677 local font_extra_info = font_extra_info -- key: fontnumber
678 local font_extra_basename = {} -- key: basename
680 -- IVS and vertical metrics
681 local prepare_fl_data
682 local supply_vkern_table
684 local fields = fontloader.fields
685 local function glyph_vmetric(glyph)
686 local flds = fields(glyph)
687 local vw, tsb, vk = nil, nil, nil
688 for _,i in ipairs(flds) do
689 if i=='vwidth' then vw = glyph.vwidth end
690 if i=='tsidebearing' then tsb = glyph.tsidebearing end
691 if i=='vkerns' then vk = glyph.vkerns end
696 local sort = table.sort
697 local function add_fl_table(dest, glyphs, unitable, asc_des, units, id)
698 local glyphmin, glyphmax = glyphs.glyphmin, glyphs.glyphmax
699 if glyphmax < 0 then return dest end
700 local tg = glyphs.glyphs
701 for i = glyphmin, glyphmax do
705 for _,at in pairs(gv.altuni) do
706 local bu, vsel = at.unicode, at.variant
708 if vsel>=0xE0100 then vsel = vsel - 0xE0100 end
709 local uniq_flag = true
710 if dest and dest[bu] then
711 for i,_ in pairs(dest[bu]) do
712 if i==vsel then uniq_flag = false; break end
716 dest = dest or {}; dest[bu] = dest[bu] or {}
717 dest[bu][vsel] = unitable[gv.name]
723 local gi = unitable[gv.name]
725 if unitable[gv.name .. '.vert'] then
726 dest = dest or {}; dest[gi] = dest[gi] or {};
727 dest[gi].vform = unitable[gv.name .. '.vert']
728 elseif id.characters[gi] and vert_form_table[gi] then
729 dest = dest or {}; dest[gi] = dest[gi] or {};
730 dest[gi].vform = vert_form_table[gi]
734 local vw, tsb, vk = glyph_vmetric(gv)
735 local gi = unitable[gv.name]
736 if gi and vw and vw~=asc_des then
737 -- We do not use tsidebearing, since (1) fontloader does not read VORG table
738 -- and (2) 'tsidebearing' doea not appear in the returned table by fontloader.fields.
739 -- Hence, we assume that vertical origin == ascender
740 -- (see capsule_glyph_tate in ltj-setwidth.lua)
741 dest = dest or {}; dest[gi] = dest[gi] or {}
742 dest[gi].vwidth = vw/units
747 local dest_vk = dest.vkerns or {}; dest.vkerns = dest_vk
748 for _,v in pairs(vk) do
749 if unitable[v.char] then
751 if type(vl)=='table' then
752 for _,vlt in pairs(vl) do
753 dest_vk[vlt] = dest_vk[vlt] or {}
754 dest_vk[vlt][gi] = dest_vk[vlt][gi] or {}
755 dest_vk[vlt][gi][unitable[v.char]] = v.off
758 dest_vk[vl] = dest_vk[vl] or {}
759 dest_vk[vl][gi] = dest_vk[vl][gi] or {}
760 dest_vk[vl][gi][unitable[v.char]] = v.off
769 prepare_fl_data = function (dest, id)
770 local fl = fontloader.open(id.filename)
771 local ind_to_uni, unicodes = {}, {}
772 for i,v in pairs(id.characters) do
773 ind_to_uni[v.index] = i
776 local tg, glyphmin, glyphmax = fl.glyphs, fl.glyphmin, fl.glyphmax
777 if 0 <= glyphmax then
778 for i = glyphmin, glyphmax do
779 if tg[i] and tg[i].name then unicodes[tg[i].name] = ind_to_uni[i] end
782 dest = add_fl_table(dest, fl, unicodes,
783 fl.ascent + fl.descent, fl.units_per_em, id)
786 for _,v in pairs(fl.subfonts) do
787 local tg, glyphmin, glyphmax = v.glyphs, v.glyphmin, v.glyphmax
788 if 0 <= glyphmax then
789 for i = glyphmin, glyphmax do
790 if tg[i] and tg[i].name then unicodes[tg[i].name] = ind_to_uni[i] end
794 for _,v in pairs(fl.subfonts) do
795 dest = add_fl_table(dest, v, unicodes,
796 fl.ascent + fl.descent, fl.units_per_em, id)
799 if dest then dest.unicodes = unicodes end
800 fontloader.close(fl); collectgarbage("collect")
803 -- supply vkern table
804 supply_vkern_table = function(id, bname)
805 local bx = font_extra_basename[bname].vkerns
806 local lookuphash = id.resources.lookuphash
807 local desc = id.shared.rawdata.descriptions
808 if bx and lookuphash then
809 for i,v in pairs(bx) do
810 lookuphash[i] = lookuphash[i] or v
811 for j,w in pairs(v) do
812 desc[j].kerns = desc[j].kerns or {}
823 local checksum = file.checksum
825 local function prepare_extra_data_base(id)
826 if (not id) or (not id.filename) then return end
827 local bname = file.nameonly(id.filename)
828 if not font_extra_basename[bname] then
829 -- if the cache is present, read it
830 local newsum = checksum(id.filename) -- MD5 checksum of the fontfile
831 local v = "extra_" .. string.lower(file.nameonly(id.filename))
832 local dat = ltjb.load_cache(
834 function (t) return (t.version~=cache_ver) or (t.chksum~=newsum) end
836 -- if the cache is not found or outdated, save the cache
838 font_extra_basename[bname] = dat[1] or {}
841 dat = prepare_fl_data(dat, id)
842 font_extra_basename[bname] = dat or {}
845 chksum = checksum(id.filename),
853 local function prepare_extra_data_font(id, res)
854 if type(res)=='table' and res.shared and res.filename then
855 font_extra_info[id] = font_extra_basename[file.nameonly(res.filename)]
858 luatexbase.add_to_callback(
859 'luaotfload.patch_font',
861 -- these function is executed one time per one fontfile
862 local bname = prepare_extra_data_base(tfmdata)
863 if bname then supply_vkern_table(tfmdata, bname) end
866 'ltj.prepare_extra_data', 1)
867 luatexbase.add_to_callback(
868 'luatexja.define_font',
869 function (res, name, size, id)
870 prepare_extra_data_font(id, res)
872 'ltj.prepare_extra_data', 1)
874 local nulltable = {} -- dummy
875 ltjr.vert_addfunc = function (n) font_extra_info[n] = nulltable end
877 local identifiers = fonts.hashes.identifiers
878 for i=1,font.nextid()-1 do
879 if identifiers[i] then
880 prepare_extra_data_base(identifiers[i])
881 prepare_extra_data_font(i,identifiers[i])
887 ------------------------------------------------------------------------
888 -- calculate vadvance
889 ------------------------------------------------------------------------
891 local function acc_feature(table_vadv, table_vorg, subtables, ft, already_vert)
892 for char_num,v in pairs(ft.shared.rawdata.descriptions) do
894 for sn, sv in pairs(v.slookups) do
895 if subtables[sn] and type(sv)=='table' then
898 = (table_vadv[char_num] or 0) + sv[4]
900 if sv[2]~=0 and not already_vert then
902 = (table_vorg[char_num] or 0) + sv[2]
910 luatexbase.add_to_callback(
911 "luatexja.define_jfont",
912 function (fmtable, fnum)
913 local vadv = {}; fmtable.v_advance = vadv
914 local vorg = {}; fmtable.v_origin = vorg
915 local ft = font_getfont(fnum)
917 if ft.specification then
918 for feat_name,v in pairs(ft.specification.features.normal) do
920 for _,i in pairs(ft.resources.sequences) do
921 if i.order[1]== feat_name and i.type == 'gpos_single' then
922 for _,st in pairs(i.subtables) do
929 acc_feature(vadv, vorg, subtables, ft,
930 ft.specification.features.normal.vrt2 or ft.specification.features.normal.vert)
931 for i,v in pairs(vadv) do
932 vadv[i]=vadv[i]/ft.units_per_em*fmtable.size
934 for i,v in pairs(vorg) do
935 vorg[i]=vorg[i]/ft.units_per_em*fmtable.size
939 end, 1, 'ltj.v_advance'
943 ------------------------------------------------------------------------
944 -- supply tounicode entries
945 ------------------------------------------------------------------------
947 local ltjr_prepare_cid_font = ltjr.prepare_cid_font
948 luatexbase.add_to_callback(
949 'luaotfload.patch_font',
951 if tfmdata.cidinfo then
952 local rd = ltjr_prepare_cid_font(tfmdata.cidinfo.registry, tfmdata.cidinfo.ordering)
954 local ru, rc = rd.resources.unicodes, rd.characters
955 for i,v in pairs(tfmdata.characters) do
956 local w = ru["Japan1." .. tostring(v.index)]
958 v.tounicode = v.tounicode or rc[w]. tounicode
966 'ltj.supply_tounicode', 1)
970 ------------------------------------------------------------------------
972 ------------------------------------------------------------------------
974 local getfont = node.direct.getfont
975 local getchar = node.direct.getchar
976 local get_dir_count = ltjd.get_dir_count
977 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
978 local ensure_tex_attr = ltjb.ensure_tex_attr
979 local node_write = node.direct.write
982 if status.luatex_version>=89 then
983 new_ic_kern = function(g) return node_new(id_kern,3) end
985 local ITALIC = luatexja.icflag_table.ITALIC
986 new_ic_kern = function()
987 local g = node_new(id_kern, 1)
988 set_attr(g, attr_icflag, ITALIC)
992 -- EXT: italic correction
993 function append_italic()
994 local p = to_direct(tex.nest[tex.nest.ptr].tail)
995 local TEMP = node_new(id_kern)
996 if p and getid(p)==id_glyph then
997 if is_ucs_in_japanese_char(p) then
998 local j = font_metric_table[
999 has_attr(p, (get_dir_count()==dir_tate) and attr_curtfnt or attr_curjfnt)
1001 local g = new_ic_kern()
1002 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
1003 node_write(g); ensure_tex_attr(attr_icflag, 0)
1005 local f = getfont(p)
1006 local h = font_getfont(f) or font.fonts[f]
1008 local g = new_ic_kern()
1009 if h.characters[getchar(p)] and h.characters[getchar(p)].italic then
1010 setfield(g, 'kern', h.characters[getchar(p)].italic)
1011 node_write(g); ensure_tex_attr(attr_icflag, 0)