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
15 local Dnode = node.direct or node
17 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
18 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
19 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
20 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
22 local nullfunc = function(n) return n end
23 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
25 local node_new = Dnode.new
26 local node_free = Dnode.free
27 local has_attr = Dnode.has_attribute
28 local set_attr = Dnode.set_attribute
29 local node_write = Dnode.write
30 local round = tex.round
31 local font_getfont = font.getfont
33 local attr_icflag = luatexbase.attributes['ltj@icflag']
34 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
35 local attr_curtfnt = luatexbase.attributes['ltj@curtfnt']
36 local id_glyph = node.id('glyph')
37 local id_kern = node.id('kern')
38 local id_glue_spec = node.id('glue_spec')
39 local id_glue = node.id('glue')
40 local cat_lp = luatexbase.catcodetables['latex-package']
41 local ITALIC = luatexja.icflag_table.ITALIC
42 local FROM_JFM = luatexja.icflag_table.FROM_JFM
44 ------------------------------------------------------------------------
46 ------------------------------------------------------------------------
48 metrics={} -- this table stores all metric informations
49 font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
51 luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
53 local jfm_file_name, jfm_var
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
72 for j,w in pairs(v.chars) do
73 if type(w) == 'number' and w~=-1 then
75 elseif type(w) == 'string' and utf.len(w)==1 then
76 real_char = true; w = utf.byte(w)
77 elseif type(w) == 'string' and utf.len(w)==2 and utf.sub(w,2) == '*' then
78 real_char = true; w = utf.byte(utf.sub(w,1,1))
79 if not t.chars[-w] then
82 defjfm_res= nil; return
85 if not t.chars[w] then
88 defjfm_res= nil; return
91 if type(v.align)~='string' then
92 v.align = 'left' -- left
96 if type(v.width)~='number' and v.width~='prop' then
97 defjfm_res= nil; return
99 if v.width=='prop' and jfm_dir=='tate' then
102 if type(v.height)~='number' then
105 if type(v.depth)~='number' then
108 if type(v.italic)~='number' then
111 if type(v.left)~='number' then
114 if type(v.down)~='number' then
121 v.kern = v.kern or {}; v.glue = v.glue or {}
122 for j in pairs(v.glue) do
123 if v.kern[j] then defjfm_res= nil; return end
125 for j,x in pairs(v.kern) do
126 if type(x)=='number' then
128 elseif type(x)=='table' then
129 v.kern[j] = {x[1], x[2] or 0}
136 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
141 local update_jfm_cache
143 local function mult_table(old,scale) -- modified from table.fastcopy
146 for k,v in next, old do
147 if type(v) == "table" then
148 new[k] = mult_table(v,scale)
149 elseif type(v) == "number" then
150 new[k] = round(v*scale)
159 update_jfm_cache = function (j,sz)
160 if metrics[j].size_cache[sz] then return end
162 metrics[j].size_cache[sz] = t
163 t.chars = metrics[j].chars
164 t.char_type = mult_table(metrics[j].char_type, sz)
165 for i,v in pairs(t.char_type) do
166 v.align = (v.align=='left') and 0 or
167 ((v.align=='right') and 1 or 0.5)
168 if type(i) == 'number' then -- char_type
169 for k,w in pairs(v.glue) do
170 local h = node_new(id_glue_spec)
171 v[k] = {true, h, (w[5] and w[5]/sz or 0), FROM_JFM + (w[4] and w[4]/sz or 0)}
172 setfield(h, 'width', w[1])
173 setfield(h, 'stretch', w[2])
174 setfield(h, 'shrink', w[3])
175 setfield(h, 'stretch_order', 0)
176 setfield(h, 'shrink_order', 0)
178 for k,w in pairs(v.kern) do
179 local g = node_new(id_kern)
180 setfield(g, 'kern', w[1])
181 setfield(g, 'subtype', 1)
182 set_attr(g, attr_icflag, FROM_JFM)
183 v[k] = {false, g, w[2]/sz}
186 v.glue, v.kern = nil, nil
188 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
189 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
190 t.zw = round(metrics[j].zw*sz)
191 t.zh = round(metrics[j].zh*sz)
195 luatexbase.create_callback("luatexja.find_char_class", "data",
196 function (arg, fmtable, char)
200 function find_char_class(c,m)
201 -- c: character code, m:
202 if not m then return 0 end
204 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
208 ------------------------------------------------------------------------
209 -- LOADING JAPANESE FONTS
210 ------------------------------------------------------------------------
214 local global_flag -- true if \globaljfont, false if \jfont
215 local function load_jfont_metric()
216 if jfm_file_name=='' then
217 ltjb.package_error('luatexja',
219 'To load and define a Japanese font, a JFM must be specified.'..
220 "The JFM 'ujis' will be used for now.")
223 for j,v in ipairs(metrics) do
224 if v.name==jfm_file_name then return j end
226 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
228 defjfm_res.name = jfm_file_name
229 table.insert(metrics, defjfm_res)
237 function jfontdefX(g)
238 local t = token.get_next()
239 cstemp=token.csname_name(t)
240 global_flag = g and '\\global' or ''
241 tex.sprint(cat_lp, '\\expandafter\\font\\csname ', cstemp, '\\endcsname')
244 luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
247 local identifiers = fonts.hashes.identifiers
248 function jfontdefY(dir)
250 local j = load_jfont_metric(dir)
251 local fn = font.id(cstemp)
252 local f = font_getfont(fn)
254 ltjb.package_error('luatexja',
255 "bad JFM `" .. jfm_file_name .. "'",
256 'The JFM file you specified is not valid JFM file.\n'..
257 'So defining Japanese font is cancelled.')
258 tex.sprint(cat_lp, global_flag, '\\expandafter\\let\\csname ', cstemp,
259 '\\endcsname=\\relax')
262 update_jfm_cache(j, f.size)
263 local ad = identifiers[fn].parameters
264 local sz = metrics[j].size_cache[f.size]
265 local fmtable = { jfm = j, size = f.size, var = jfm_var,
266 zw = sz.zw, zh = sz.zh,
267 ascent = ad.ascender,
268 descent = ad.descender,
269 chars = sz.chars, char_type = sz.char_type,
270 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
273 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
274 font_metric_table[fn]=fmtable
275 tex.sprint(cat_lp, global_flag, '\\protected\\expandafter\\def\\csname ',
276 cstemp , '\\endcsname{\\ltj@cur'..
277 (dir == 'yoko' and 'j' or 't') .. 'fnt', fn, '\\relax}')
284 local a = font_metric_table[tex.attribute[attr_curjfnt]]
285 return a and a.zw or 0
288 local a = font_metric_table[tex.attribute[attr_curjfnt]]
289 return a and a.zw or 0
294 -- extract jfm_file_name and jfm_var
295 -- normalize position of 'jfm=' and 'jfmvar=' keys
296 local function extract_metric(name)
297 jfm_file_name = ''; jfm_var = ''
298 local tmp, index = name:sub(1, 5), 1
299 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
302 local p = name:find(":", index); index = p and (p+1) or index
304 local l = name:len()+1
305 local q = name:find(";", index+1) or l
306 if name:sub(index, index+3)=='jfm=' and q>index+4 then
307 jfm_file_name = name:sub(index+4, q-1)
309 name = name:sub(1,index-1) .. name:sub(q+1)
311 name = name:sub(1,index-1)
314 elseif name:sub(index, index+6)=='jfmvar=' and q>index+6 then
315 jfm_var = name:sub(index+7, q-1)
317 name = name:sub(1,index-1) .. name:sub(q+1)
319 name = name:sub(1,index-1)
323 index = (l~=q) and (q+1) or nil
326 if jfm_file_name~='' then
327 local l = name:sub(-1)
329 .. ((l==':' or l==';') and '' or ';')
330 .. 'jfm=' .. jfm_file_name
332 name = name .. 'jfmvar=' .. jfm_var
337 luatexja.jfont.extract_metric = extract_metric
340 ------------------------------------------------------------------------
342 ------------------------------------------------------------------------
344 -- these function are called from ltj-latex.sty
345 local kyenc_list, ktenc_list = {}, {}
346 function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
347 function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
348 function is_kyenc(enc)
349 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
351 function is_ktenc(enc)
352 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
354 function is_kenc(enc)
355 tex.sprint(cat_lp, '\\let\\ifin@\\if'
356 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
359 local kfam_list, Nkfam_list = {}, {}
360 function add_kfam_list(enc, fam)
361 if not kfam_list[enc] then kfam_list[enc] = {} end
362 kfam_list[enc][fam] = 'true '
364 function add_Nkfam_list(enc, fam)
365 if not Nkfam_list[enc] then Nkfam_list[enc] = {} end
366 Nkfam_list[enc][fam] = 'true '
368 function is_kfam(enc, fam)
369 tex.sprint(cat_lp, '\\let\\ifin@\\if'
370 .. (kfam_list[enc] and kfam_list[enc][fam] or 'false ')) end
371 function is_Nkfam(enc, fam)
372 tex.sprint(cat_lp, '\\let\\ifin@\\if'
373 .. (Nkfam_list[enc] and Nkfam_list[enc][fam] or 'false ')) end
375 local ffam_list, Nffam_list = {}, {}
376 function add_ffam_list(enc, fam)
377 if not ffam_list[enc] then ffam_list[enc] = {} end
378 ffam_list[enc][fam] = 'true '
380 function add_Nffam_list(enc, fam)
381 if not Nffam_list[enc] then Nffam_list[enc] = {} end
382 Nffam_list[enc][fam] = 'true '
384 function is_ffam(enc, fam)
385 tex.sprint(cat_lp, '\\let\\ifin@\\if'
386 .. (ffam_list[enc] and ffam_list[enc][fam] or 'false ')) end
387 function is_Nffam(enc, fam)
388 tex.sprint(cat_lp, '\\let\\ifin@\\if'
389 .. (Nffam_list[enc] and Nffam_list[enc][fam] or 'false ')) end
391 ------------------------------------------------------------------------
393 ------------------------------------------------------------------------
395 local alt_font_table = alt_font_table
396 local attr_curaltfnt = {}
397 local ucs_out = 0x110000
399 ------ for TeX interface
401 function set_alt_font(b,e,ind,bfnt)
402 -- ind: 新フォント, bfnt: 基底フォント
403 if b>e then b, e = e, b end
405 ltjb.package_error('luatexja',
406 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
407 'I take the intersection with [0x80, 0x10ffff].')
408 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
409 elseif e<0 then -- b<e<0
411 elseif b<0x80 or e>=ucs_out then
412 ltjb.package_warning('luatexja',
413 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
414 'I take the intersection with [0x80, 0x10ffff].')
415 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
417 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
418 local t = alt_font_table[bfnt]
419 local ac = font_getfont(ind).characters
420 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
421 if e>=0 then -- character range
423 if ac[i]then t[i]=ind end
427 local tx = font_metric_table[bfnt].chars
428 for i,v in pairs(tx) do
429 if b<=v and v<=e and ac[i] then t[i]=ind end
435 function clear_alt_font(bfnt)
436 if alt_font_table[bfnt] then
437 local t = alt_font_table[bfnt]
438 for i,_ in pairs(t) do t[i]=nil; end
442 ------ used in ltjp.suppress_hyphenate_ja callback
443 function replace_altfont(pf, pc)
444 local a = alt_font_table[pf]
445 return a and a[pc] or pf
448 ------ for LaTeX interface
450 local alt_font_table_latex = {}
453 function clear_alt_font_latex(bbase)
454 local t = alt_font_table_latex[bbase]
456 for j,v in pairs(t) do t[j] = nil end
461 function set_alt_font_latex(b,e,ind,bbase)
462 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
463 if b>e then b, e = e, b end
465 ltjb.package_error('luatexja',
466 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
467 'I take the intersection with [0x80, 0x10ffff].')
468 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
469 elseif e<0 then -- b<e<0
471 elseif b<0x80 or e>=ucs_out then
472 ltjb.package_warning('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)
478 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
479 local t = alt_font_table_latex[bbase]
480 if not t[ind] then t[ind] = {} end
482 for j,v in pairs(t) do
483 if v[i] then -- remove old entry
484 if j~=ind then v[i]=nil end; break
489 -- remove the empty tables
490 for j,v in pairs(t) do
491 local flag_clear = true
492 for k,_ in pairs(v) do flag_clear = false; break end
493 if flag_clear then t[j]=nil end
495 if ind==bbase then t[bbase] = nil end
498 -- ここから先は 新 \selectfont の内部でしか実行されない
500 local alt_font_base, alt_font_base_num
503 function does_alt_set(bbase)
504 aftl_base = alt_font_table_latex[bbase]
505 tex.sprint(cat_lp, '\\if' .. (aftl_base and 'true' or 'false'))
508 function print_aftl_address()
509 tex.sprint(cat_lp, ';ltjaltfont' .. tostring(aftl_base):sub(8))
513 function output_alt_font_cmd(dir, bbase)
514 alt_font_base = bbase
516 alt_font_base_num = tex.getattribute(attr_curtfnt)
518 alt_font_base_num = tex.getattribute(attr_curjfnt)
520 local t = alt_font_table[alt_font_base_num]
522 for i,_ in pairs(t) do t[i]=nil end
524 t = alt_font_table_latex[bbase]
526 for i,_ in pairs(t) do
527 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux' .. dir .. '{' .. i .. '}')
533 function pickup_alt_font_a(size_str)
534 local t = alt_font_table_latex[alt_font_base]
536 for i,v in pairs(t) do
537 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
538 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
543 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
544 local t = alt_font_table[alt_font_base_num]
545 local tx = font_metric_table[alt_font_base_num].chars
546 for i,v in pairs(tx) do
547 if v==class and afnt_chars[i] then t[i]=afnt_num end
552 function pickup_alt_font_b(afnt_num, afnt_base)
553 local t = alt_font_table[alt_font_base_num]
554 local ac = font_getfont(afnt_num).characters
555 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
556 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
557 if i == afnt_base then
558 for j,_ in pairs(v) do
560 if ac[j] then t[j]=afnt_num end
561 else -- -n (n>=1) means that the character class n,
562 -- which is defined in the JFM
563 pickup_alt_font_class(-j, afnt_num, ac)
574 ------------------------------------------------------------------------
576 ------------------------------------------------------------------------
578 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
579 -- EXT: italic correction
580 function append_italic()
581 local p = to_direct(tex.nest[tex.nest.ptr].tail)
582 if p and getid(p)==id_glyph then
584 local g = node_new(id_kern)
585 setfield(g, 'subtype', 1)
586 set_attr(g, attr_icflag, ITALIC)
587 if is_ucs_in_japanese_char(p) then
588 f = has_attr(p, attr_curjfnt)
589 local j = font_metric_table[f]
590 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
592 local h = font_getfont(f)
594 setfield(g, 'kern', h.characters[getchar(p)].italic)
596 tex.attribute[attr_icflag] = 0
601 tex.attribute[attr_icflag] = 0