diff options
Diffstat (limited to 'Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua')
-rw-r--r-- | Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua | 176 |
1 files changed, 167 insertions, 9 deletions
diff --git a/Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua b/Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua index cdcd7e21175..47973decb14 100644 --- a/Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua +++ b/Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua @@ -1,15 +1,13 @@ -- --- luatexja/otf.lua +-- luatexja/ltj-otf.lua -- -luatexbase.provides_module({ - name = 'luatexja.otf', - date = '2013/05/11', - description = 'The OTF Lua module for LuaTeX-ja', -}) +require('unicode') +require('lualibs') luatexja.load_module('base'); local ltjb = luatexja.base luatexja.load_module('jfont'); local ltjf = luatexja.jfont luatexja.load_module('rmlgbm'); local ltjr = luatexja.rmlgbm +luatexja.load_module('charrange'); local ltjc = luatexja.charrange local id_glyph = node.id('glyph') local id_whatsit = node.id('whatsit') @@ -23,6 +21,7 @@ local has_attr = node.has_attribute local set_attr = node.set_attribute local unset_attr = node.unset_attribute local node_insert_after = node.insert_after +local identifiers = fonts.hashes.identifiers local attr_curjfnt = luatexbase.attributes['ltj@curjfnt'] local attr_jchar_class = luatexbase.attributes['ltj@charclass'] @@ -32,6 +31,7 @@ local attr_ykblshift = luatexbase.attributes['ltj@ykblshift'] local ltjf_font_metric_table = ltjf.font_metric_table local ltjf_find_char_class = ltjf.find_char_class local ltjr_cidfont_data = ltjr.cidfont_data +local ltjc_is_ucs_in_japanese_char = ltjc.is_ucs_in_japanese_char local OTF = luatexja.userid_table.OTF @@ -70,7 +70,7 @@ end local function cid(key) if key==0 then return append_jglyph(char) end - local curjfnt = fonts.hashes.identifiers[tex.attribute[attr_curjfnt]] + local curjfnt = identifiers[tex.attribute[attr_curjfnt]] if not curjfnt.cidinfo or curjfnt.cidinfo.ordering ~= "Japan1" and curjfnt.cidinfo.ordering ~= "GB1" and @@ -137,7 +137,7 @@ luatexbase.add_to_callback('pre_linebreak_filter', -- 和文フォント読み込み時に,CID -> unicode 対応をとっておく. local function cid_to_char(fmtable, fn) - local fi = fonts.hashes.identifiers[fn] + local fi = identifiers[fn] if fi.cidinfo and fi.cidinfo.ordering == "Japan1" then fmtable.cid_char_type = {} for i, v in pairs(fmtable.chars) do @@ -170,9 +170,167 @@ end luatexbase.add_to_callback("luatexja.find_char_class", cid_set_char_class, "ltj.otf.find_char_class", 1) --------------------- all done +-------------------- IVS +local font_ivs_table = {} -- key: fontnumber +local enable_ivs +do + local is_ivs_enabled = false + local ivs -- temp table + local sort = table.sort + local uniq_flag + local function add_ivs_table(tg, unitable) + for gu, gv in pairs(tg) do + local ga = gv.altuni + if ga then + for _,at in pairs(ga) do + local bu, vsel = at.unicode, (at.variant or -1) + if vsel~=-1 then + if vsel>=0xE0100 then vsel = vsel - 0xE0100 end + if not ivs[bu] then ivs[bu] = {} end + uniq_flag = true + for i,_ in pairs(ivs[bu]) do + if i==vs then uniq_flag = false; break end + end + if uniq_flag then + ivs[bu][vsel] = unitable[gv.name] + end + end + end + end + end + end + local function make_ivs_table(id, fname) + ivs = {} + local fl = fontloader.open(fname) + local ft = fontloader.to_table(fl) + local unicodes = id.resources.unicodes + add_ivs_table(ft.glyphs, id.resources.unicodes) + if ft.subfonts then + for _,v in pairs(ft.subfonts) do + add_ivs_table(v.glyphs, id.resources.unicodes) + end + end + fontloader.close(fl) + return ivs + end + +-- loading and saving + local font_ivs_basename = {} -- key: basename + local cache_ver = 4 + local checksum = file.checksum + + local function prepare_ivs_data(n, id) + -- test if already loaded + if type(id)=='number' then -- sometimes id is an integer + font_ivs_table[n] = font_ivs_table[id]; return + elseif not id then return + end + local fname = id.filename + local bname = file.basename(fname) + if not fname then + font_ivs_table[n] = {}; return + elseif font_ivs_basename[bname] then + font_ivs_table[n] = font_ivs_basename[bname]; return + end + + -- if the cache is present, read it + local newsum = checksum(fname) -- MD5 checksum of the fontfile + local v = "ivs_" .. string.lower(file.nameonly(fname)) + local dat = ltjb.load_cache(v, + function (t) return (t.version~=cache_ver) or (t.chksum~=newsum) end + ) + -- if the cache is not found or outdated, save the cache + if dat then + font_ivs_basename[bname] = dat[1] or {} + else + dat = make_ivs_table(id, fname) + font_ivs_basename[bname] = dat or {} + ltjb.save_cache( v, + { + chksum = checksum(fname), + version = cache_ver, + dat, + }) + end + font_ivs_table[n] = font_ivs_basename[bname] + end + +-- 組版時 + local function ivs_jglyph(char, bp, pf) + local p = node_new(id_whatsit,sid_user) + p.user_id=OTF; p.type=100; p.value=char + set_attr(p, attr_curjfnt, pf) + set_attr(p, attr_yablshift, has_attr(bp, attr_ykblshift) or 0) + return p + end + + local function do_ivs_repr(head) + local p = head + while p do + local pid = p.id + if pid==id_glyph then + local pf = p.font + if (has_attr(p, attr_curjfnt) or 0) == pf then + -- only works with JAchars + local q = node_next(p) -- the next node of p + if q and q.id==id_glyph then + local qc = q.char + if (qc>=0xFE00 and qc<=0xFE0F) or (qc>=0xE0100 and qc<0xE01F0) then + -- q is a variation selector + if qc>=0xE0100 then qc = qc - 0xE0100 end + local pt = font_ivs_table[pf] + pt = pt and pt[p.char]; pt = pt and pt[qc] + head = node_remove(head,q) + if pt then + local np = ivs_jglyph(pt, p, pf) + head = node_insert_after(head, p, np) + head = node_remove(head,p) + p = np + end + end + end + end + end + p = node_next(p) + end + return head + end + + -- font define + local function font_callback(name, size, id, fallback) + local d = fallback(name, size, id) + prepare_ivs_data(id, d) + return d + end + + enable_ivs = function () + if is_ivs_enabled then + ltjb.package_warning('luatexja-otf', + 'luatexja.otf.enable_ivs() was already called, so this call is ignored', '') + else + luatexbase.add_to_callback('hpack_filter', + function (head) return do_ivs_repr(head) end,'do_ivs', 1) + luatexbase.add_to_callback('pre_linebreak_filter', + function (head) return do_ivs_repr(head) end, 'do_ivs', 1) + local ivs_callback = function (name, size, id) + return font_callback( + name, size, id, + function (name, size, id) return luatexja.font_callback(name, size, id) end + ) + end + luatexbase.add_to_callback('define_font',ivs_callback,"luatexja.ivs_font_callback", 1) + for i=1,font.nextid()-1 do + if identifiers[i] then prepare_ivs_data(i, identifiers[i]) end + end + is_ivs_enabled = true + end + end +end + luatexja.otf = { append_jglyph = append_jglyph, + enable_ivs = enable_ivs, -- 隠し機能: IVS + font_ivs_table = font_ivs_table, cid = cid, } |