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-rw-r--r--Master/texmf-dist/tex/luatex/luatexja/ltj-otf.lua176
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,
}