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 mem_leak_glue, mem_leak_gs, mem_leak_kern = 0, 0, 0
16 local Dnode = node.direct or node
18 local setfield = (Dnode ~= node) and Dnode.setfield or function(n, i, c) n[i] = c end
19 local getid = (Dnode ~= node) and Dnode.getid or function(n) return n.id end
20 local getfont = (Dnode ~= node) and Dnode.getfont or function(n) return n.font end
21 local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
23 local nullfunc = function(n) return n end
24 local to_direct = (Dnode ~= node) and Dnode.todirect or nullfunc
26 local node_new = Dnode.new
27 local node_free = Dnode.free
28 local has_attr = Dnode.has_attribute
29 local set_attr = Dnode.set_attribute
30 local node_write = Dnode.write
31 local round = tex.round
32 local font_getfont = font.getfont
34 local attr_icflag = luatexbase.attributes['ltj@icflag']
35 local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
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' 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
95 if not (type(v.width)=='number'
96 or (jfm_dir=='yoko' and v.width~='prop')) then
97 defjfm_res= nil; return
99 if type(v.height)~='number' then
102 if type(v.depth)~='number' then
105 if type(v.italic)~='number' then
108 if type(v.left)~='number' then
111 if type(v.down)~='number' then
118 v.kern = v.kern or {}; v.glue = v.glue or {}
119 for j in pairs(v.glue) do
120 if v.kern[j] then defjfm_res= nil; return end
122 for j,x in pairs(v.kern) do
123 if type(x)=='number' then
125 elseif type(x)=='table' then
126 v.kern[j] = {x[1], x[2] or 0}
133 t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
138 local update_jfm_cache
140 local function mult_table(old,scale) -- modified from table.fastcopy
143 for k,v in next, old do
144 if type(v) == "table" then
145 new[k] = mult_table(v,scale)
146 elseif type(v) == "number" then
147 new[k] = round(v*scale)
156 update_jfm_cache = function (j,sz)
157 if metrics[j].size_cache[sz] then return end
159 metrics[j].size_cache[sz] = t
160 t.chars = metrics[j].chars
161 t.char_type = mult_table(metrics[j].char_type, sz)
162 for i,v in pairs(t.char_type) do
163 v.align = (v.align=='left') and 0 or
164 ((v.align=='right') and 1 or 0.5)
165 if type(i) == 'number' then -- char_type
166 for k,w in pairs(v.glue) do
167 local h = node_new(id_glue_spec)
168 v[k] = {true, h, (w[5] and w[5]/sz or 0), FROM_JFM + (w[4] and w[4]/sz or 0)}
169 setfield(h, 'width', w[1])
170 setfield(h, 'stretch', w[2])
171 setfield(h, 'shrink', w[3])
172 setfield(h, 'stretch_order', 0)
173 setfield(h, 'shrink_order', 0)
175 for k,w in pairs(v.kern) do
176 local g = node_new(id_kern)
177 setfield(g, 'kern', w[1])
178 setfield(g, 'subtype', 1)
179 set_attr(g, attr_icflag, FROM_JFM)
180 v[k] = {false, g, w[2]/sz}
183 v.glue, v.kern = nil, nil
185 t.kanjiskip = mult_table(metrics[j].kanjiskip, sz)
186 t.xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
187 t.zw = round(metrics[j].zw*sz)
188 t.zh = round(metrics[j].zh*sz)
192 luatexbase.create_callback("luatexja.find_char_class", "data",
193 function (arg, fmtable, char)
197 function find_char_class(c,m)
198 -- c: character code, m:
199 if not m then return 0 end
201 luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
205 ------------------------------------------------------------------------
206 -- LOADING JAPANESE FONTS
207 ------------------------------------------------------------------------
211 local global_flag -- true if \globaljfont, false if \jfont
212 local function load_jfont_metric()
213 if jfm_file_name=='' then
214 ltjb.package_error('luatexja',
216 'To load and define a Japanese font, a JFM must be specified.'..
217 "The JFM 'ujis' will be used for now.")
220 for j,v in ipairs(metrics) do
221 if v.name==jfm_file_name then return j end
223 luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
225 defjfm_res.name = jfm_file_name
226 table.insert(metrics, defjfm_res)
234 function jfontdefX(g)
235 local t = token.get_next()
236 cstemp=token.csname_name(t)
237 global_flag = g and '\\global' or ''
238 tex.sprint(cat_lp, '\\expandafter\\font\\csname ' .. cstemp .. '\\endcsname')
241 luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
244 local identifiers = fonts.hashes.identifiers
245 function jfontdefY(dir)
247 local j = load_jfont_metric(dir)
248 local fn = font.id(cstemp)
249 local f = font_getfont(fn)
251 ltjb.package_error('luatexja',
252 "bad JFM `" .. jfm_file_name .. "'",
253 'The JFM file you specified is not valid JFM file.\n'..
254 'So defining Japanese font is cancelled.')
255 tex.sprint(cat_lp, global_flag .. '\\expandafter\\let\\csname ' ..cstemp
256 .. '\\endcsname=\\relax')
259 update_jfm_cache(j, f.size)
260 local ad = identifiers[fn].parameters
261 local sz = metrics[j].size_cache[f.size]
262 local fmtable = { jfm = j, size = f.size, var = jfm_var,
263 zw = sz.zw, zh = sz.zh,
264 ascent = ad.ascender,
265 descent = ad.descender,
266 chars = sz.chars, char_type = sz.char_type,
267 kanjiskip = sz.kanjiskip, xkanjiskip = sz.xkanjiskip,
270 fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
271 font_metric_table[fn]=fmtable
272 tex.sprint(cat_lp, global_flag .. '\\protected\\expandafter\\def\\csname '
273 .. cstemp .. '\\endcsname{\\ltj@cur'
274 .. (dir == 'yoko' and 'j' or 't') .. 'fnt=' .. fn .. '\\relax}')
281 local a = font_metric_table[tex.attribute[attr_curjfnt]]
282 return a and a.zw or 0
285 local a = font_metric_table[tex.attribute[attr_curjfnt]]
286 return a and a.zw or 0
291 -- extract jfm_file_name and jfm_var
292 local function extract_metric(name)
294 local tmp = utf.sub(basename, 1, 5)
295 jfm_file_name = ''; jfm_var = ''
296 if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
297 basename = utf.sub(basename, 6)
299 local p = utf.find(basename, ":")
301 basename = utf.sub(basename, p+1)
304 -- now basename contains 'features' only.
307 local q = utf.find(basename, ";", p+1) or utf.len(basename)+1
308 if utf.sub(basename, p, p+3)=='jfm=' and q>p+4 then
309 jfm_file_name = utf.sub(basename, p+4, q-1)
310 elseif utf.sub(basename, p, p+6)=='jfmvar=' and q>p+6 then
311 jfm_var = utf.sub(basename, p+7, q-1)
313 if utf.len(basename)+1==q then p = nil else p = q + 1 end
318 -- replace fonts.define.read()
319 luatexbase.add_to_callback('luatexja.define_font',
323 'extract_jfm_name', 1)
326 ------------------------------------------------------------------------
328 ------------------------------------------------------------------------
330 -- these function are called from ltj-latex.sty
331 local kyenc_list, ktenc_list = {}, {}
332 function add_kyenc_list(enc) kyenc_list[enc] = 'true ' end
333 function add_ktenc_list(enc) ktenc_list[enc] = 'true ' end
334 function is_kyenc(enc)
335 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (kyenc_list[enc] or 'false '))
337 function is_ktenc(enc)
338 tex.sprint(cat_lp, '\\let\\ifin@\\if' .. (ktenc_list[enc] or 'false '))
340 function is_kenc(enc)
341 tex.sprint(cat_lp, '\\let\\ifin@\\if'
342 .. (kyenc_list[enc] or ktenc_list[enc] or 'false '))
345 local kfam_list, Nkfam_list = {}, {}
346 function add_kfam_list(enc, fam)
347 if not kfam_list[enc] then kfam_list[enc] = {} end
348 kfam_list[enc][fam] = 'true '
350 function add_Nkfam_list(enc, fam)
351 if not Nkfam_list[enc] then Nkfam_list[enc] = {} end
352 Nkfam_list[enc][fam] = 'true '
354 function is_kfam(enc, fam)
355 tex.sprint(cat_lp, '\\let\\ifin@\\if'
356 .. (kfam_list[enc] and kfam_list[enc][fam] or 'false ')) end
357 function is_Nkfam(enc, fam)
358 tex.sprint(cat_lp, '\\let\\ifin@\\if'
359 .. (Nkfam_list[enc] and Nkfam_list[enc][fam] or 'false ')) end
361 local ffam_list, Nffam_list = {}, {}
362 function add_ffam_list(enc, fam)
363 if not ffam_list[enc] then ffam_list[enc] = {} end
364 ffam_list[enc][fam] = 'true '
366 function add_Nffam_list(enc, fam)
367 if not Nffam_list[enc] then Nffam_list[enc] = {} end
368 Nffam_list[enc][fam] = 'true '
370 function is_ffam(enc, fam)
371 tex.sprint(cat_lp, '\\let\\ifin@\\if'
372 .. (ffam_list[enc] and ffam_list[enc][fam] or 'false ')) end
373 function is_Nffam(enc, fam)
374 tex.sprint(cat_lp, '\\let\\ifin@\\if'
375 .. (Nffam_list[enc] and Nffam_list[enc][fam] or 'false ')) end
377 ------------------------------------------------------------------------
379 ------------------------------------------------------------------------
381 local alt_font_table = alt_font_table
382 local attr_curaltfnt = {}
383 local ucs_out = 0x110000
385 ------ for TeX interface
387 function set_alt_font(b,e,ind,bfnt)
388 -- ind: 新フォント, bfnt: 基底フォント
389 if b>e then b, e = e, b end
391 ltjb.package_error('luatexja',
392 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
393 'I take the intersection with [0x80, 0x10ffff].')
394 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
395 elseif e<0 then -- b<e<0
397 elseif b<0x80 or e>=ucs_out then
398 ltjb.package_warning('luatexja',
399 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
400 'I take the intersection with [0x80, 0x10ffff].')
401 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
403 if not alt_font_table[bfnt] then alt_font_table[bfnt]={} end
404 local t = alt_font_table[bfnt]
405 local ac = font_getfont(ind).characters
406 if bfnt==ind then ind = nil end -- ind == bfnt の場合はテーブルから削除
407 if e>=0 then -- character range
409 if ac[i]then t[i]=ind end
413 local tx = font_metric_table[bfnt].chars
414 for i,v in pairs(tx) do
415 if b<=v and v<=e and ac[i] then t[i]=ind end
421 function clear_alt_font(bfnt)
422 if alt_font_table[bfnt] then
423 local t = alt_font_table[bfnt]
424 for i,_ in pairs(t) do t[i]=nil; end
428 ------ used in ltjp.suppress_hyphenate_ja callback
429 function replace_altfont(pf, pc)
430 local a = alt_font_table[pf]
431 return a and a[pc] or pf
434 ------ for LaTeX interface
436 local alt_font_table_latex = {}
439 function clear_alt_font_latex(bbase)
440 local t = alt_font_table_latex[bbase]
442 for j,v in pairs(t) do t[j] = nil end
447 function set_alt_font_latex(b,e,ind,bbase)
448 -- ind: Alt font の enc/fam/ser/shape, bbase: 基底フォントの enc/fam/ser/shape
449 if b>e then b, e = e, b end
451 ltjb.package_error('luatexja',
452 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
453 'I take the intersection with [0x80, 0x10ffff].')
454 b, e = math.max(0x80,b),math.min(ucs_out-1,e)
455 elseif e<0 then -- b<e<0
457 elseif b<0x80 or e>=ucs_out then
458 ltjb.package_warning('luatexja',
459 'bad character range ([' .. b .. ',' .. e .. ']). ' ..
460 'I take the intersection with [0x80, 0x10ffff].')
461 b, e = math.max(0x80,b), math.min(ucs_out-1,e)
464 if not alt_font_table_latex[bbase] then alt_font_table_latex[bbase]={} end
465 local t = alt_font_table_latex[bbase]
466 if not t[ind] then t[ind] = {} end
468 for j,v in pairs(t) do
469 if v[i] then -- remove old entry
470 if j~=ind then v[i]=nil end; break
475 -- remove the empty tables
476 for j,v in pairs(t) do
477 local flag_clear = true
478 for k,_ in pairs(v) do flag_clear = false; break end
479 if flag_clear then t[j]=nil end
481 if ind==bbase then t[bbase] = nil end
484 -- ここから先は 新 \selectfont の内部でしか実行されない
486 local alt_font_base, alt_font_base_num
489 function does_alt_set(bbase)
490 aftl_base = alt_font_table_latex[bbase]
491 tex.sprint(cat_lp, '\\if' .. (aftl_base and 'true' or 'false'))
494 function print_aftl_address()
495 tex.sprint(cat_lp, ';ltjaltfont' .. tostring(aftl_base):sub(8))
499 function output_alt_font_cmd(bbase)
500 alt_font_base = bbase
501 alt_font_base_num = tex.getattribute(attr_curjfnt)
502 local t = alt_font_table[alt_font_base_num]
504 for i,_ in pairs(t) do t[i]=nil end
506 t = alt_font_table_latex[bbase]
508 for i,_ in pairs(t) do
509 tex.sprint(cat_lp, '\\ltj@pickup@altfont@aux{' .. i .. '}')
515 function pickup_alt_font_a(size_str)
516 local t = alt_font_table_latex[alt_font_base]
518 for i,v in pairs(t) do
519 tex.sprint(cat_lp, '\\expandafter\\ltj@pickup@altfont@copy'
520 .. '\\csname ' .. i .. '/' .. size_str .. '\\endcsname{' .. i .. '}')
525 local function pickup_alt_font_class(class, afnt_num, afnt_chars)
526 local t = alt_font_table[alt_font_base_num]
527 local tx = font_metric_table[alt_font_base_num].chars
528 for i,v in pairs(tx) do
529 if v==class and afnt_chars[i] then t[i]=afnt_num end
534 function pickup_alt_font_b(afnt_num, afnt_base)
535 local t = alt_font_table[alt_font_base_num]
536 local ac = font_getfont(afnt_num).characters
537 if not t then t = {}; alt_font_table[alt_font_base_num] = t end
538 for i,v in pairs(alt_font_table_latex[alt_font_base]) do
539 if i == afnt_base then
540 for j,_ in pairs(v) do
542 if ac[j] then t[j]=afnt_num end
543 else -- -n (n>=1) means that the character class n,
544 -- which is defined in the JFM
545 pickup_alt_font_class(-j, afnt_num, ac)
556 ------------------------------------------------------------------------
558 ------------------------------------------------------------------------
560 local is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char_direct
561 -- EXT: italic correction
562 function append_italic()
563 local p = to_direct(tex.nest[tex.nest.ptr].tail)
564 if p and getid(p)==id_glyph then
566 local g = node_new(id_kern)
567 setfield(g, 'subtype', 1)
568 set_attr(g, attr_icflag, ITALIC)
569 if is_ucs_in_japanese_char(p) then
570 f = has_attr(p, attr_curjfnt)
571 local j = font_metric_table[f]
572 setfield(g, 'kern', j.char_type[find_char_class(getchar(p), j)].italic)
574 local h = font_getfont(f)
576 setfield(g, 'kern', h.characters[getchar(p)].italic)
578 tex.attribute[attr_icflag] = 0
583 tex.attribute[attr_icflag] = 0