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-rw-r--r--Master/texmf-dist/tex/luatex/luatexja/ltj-jfont.lua279
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diff --git a/Master/texmf-dist/tex/luatex/luatexja/ltj-jfont.lua b/Master/texmf-dist/tex/luatex/luatexja/ltj-jfont.lua
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+++ b/Master/texmf-dist/tex/luatex/luatexja/ltj-jfont.lua
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+--
+-- luatexja/jfont.lua
+--
+luatexbase.provides_module({
+ name = 'luatexja.jfont',
+ date = '2011/06/27',
+ version = '0.1',
+ description = 'Loader for Japanese fonts',
+})
+module('luatexja.jfont', package.seeall)
+
+luatexja.load_module('base'); local ltjb = luatexja.base
+luatexja.load_module('charrange'); local ltjc = luatexja.charrange
+
+local node_new = node.new
+local has_attr = node.has_attribute
+local round = tex.round
+
+local attr_icflag = luatexbase.attributes['ltj@icflag']
+local attr_curjfnt = luatexbase.attributes['ltj@curjfnt']
+local id_glyph = node.id('glyph')
+local id_kern = node.id('kern')
+local cat_lp = luatexbase.catcodetables['latex-package']
+local ITALIC = 1
+------------------------------------------------------------------------
+-- LOADING JFM
+------------------------------------------------------------------------
+
+metrics={} -- this table stores all metric informations
+font_metric_table={} -- [font number] -> jfm_name, jfm_var, size
+
+luatexbase.create_callback("luatexja.load_jfm", "data", function (ft, jn) return ft end)
+
+local jfm_file_name, jfm_var
+local defjfm_res
+
+function define_jfm(t)
+ local real_char -- Does current character class have the 'real' character?
+ if t.dir~='yoko' then
+ defjfm_res= nil; return
+ elseif type(t.zw)~='number' or type(t.zh)~='number' then
+ defjfm_res= nil; return
+ end
+ t.char_type = {}; t.chars = {}
+ for i,v in pairs(t) do
+ if type(i) == 'number' then -- char_type
+ if not v.chars then
+ if i ~= 0 then defjfm_res= nil; return end
+ real_char = true
+ else
+ real_char = false
+ for j,w in pairs(v.chars) do
+ if w == 'lineend' then
+ if #v.chars ~= 1 then defjfm_res= nil; return end
+ elseif type(w) == 'number' then
+ real_char = true;
+ elseif type(w) == 'string' and utf.len(w)==1 then
+ real_char = true; w = utf.byte(w)
+ end
+ if not t.chars[w] then
+ t.chars[w] = i
+ else
+ defjfm_res= nil; return
+ end
+ end
+ if real_char then
+ if not (type(v.width)=='number' or v.width~='prop') then
+ defjfm_res= nil; return
+ else
+ if type(v.height)~='number' then
+ v.height = 0.0
+ end
+ if type(v.depth)~='number' then
+ v.depth = 0.0
+ end
+ if type(v.italic)~='number' then
+ v.italic = 0.0
+ end
+ if type(v.left)~='number' then
+ v.left = 0.0
+ end
+ if type(v.down)~='number' then
+ v.down = 0.0
+ end
+ if type(v.align)=='nil' then
+ v.align = 'left'
+ end
+ end
+ end
+ v.chars = nil
+ end
+ if v.kern and v.glue then
+ for j,w in pairs(v.glue) do
+ if v.kern[j] then defjfm_res= nil; return end
+ end
+ end
+ t.char_type[i] = v
+ t[i] = nil
+ end
+ end
+ t = luatexbase.call_callback("luatexja.load_jfm", t, jfm_file_name)
+ t.size_cache = {}
+ defjfm_res = t
+end
+
+local function mult_table(old,scale) -- modified from table.fastcopy
+ if old then
+ local new = { }
+ for k,v in next, old do
+ if type(v) == "table" then
+ new[k] = mult_table(v,scale)
+ elseif type(v) == "number" then
+ new[k] = round(v*scale)
+ else
+ new[k] = v
+ end
+ end
+ return new
+ else return nil end
+end
+
+local function update_jfm_cache(j,sz)
+ if metrics[j].size_cache[sz] then return end
+ metrics[j].size_cache[sz] = {}
+ metrics[j].size_cache[sz].char_type = mult_table(metrics[j].char_type, sz)
+ metrics[j].size_cache[sz].kanjijskip = mult_table(metrics[j].kanjiskip, sz)
+ metrics[j].size_cache[sz].xkanjiskip = mult_table(metrics[j].xkanjiskip,sz)
+ metrics[j].size_cache[sz].zw = round(metrics[j].zw*sz)
+ metrics[j].size_cache[sz].zh = round(metrics[j].zh*sz)
+end
+
+luatexbase.create_callback("luatexja.find_char_class", "data",
+ function (arg, fmtable, char)
+ return 0
+ end)
+
+function find_char_class(c,m)
+-- c: character code, m: index in font_metric table
+ if not metrics[m.jfm] then return 0 end
+ return metrics[m.jfm].chars[c] or
+ luatexbase.call_callback("luatexja.find_char_class", 0, m, c)
+end
+
+local function load_jfont_metric()
+ if jfm_file_name=='' then
+ ltjb.package_error('luatexja',
+ 'no JFM specified',
+ 'To load and define a Japanese font, a JFM must be specified.'..
+ "The JFM 'ujis' will be used for now.")
+ jfm_file_name='ujis'
+ end
+ for j,v in ipairs(metrics) do
+ if v.name==jfm_file_name then return j end
+ end
+ luatexja.load_lua('jfm-' .. jfm_file_name .. '.lua')
+ if defjfm_res then
+ defjfm_res.name = jfm_file_name
+ table.insert(metrics, defjfm_res)
+ return #metrics
+ else
+ return nil
+ end
+end
+
+
+------------------------------------------------------------------------
+-- LOADING JAPANESE FONTS
+------------------------------------------------------------------------
+local cstemp
+
+-- EXT
+function jfontdefX(g)
+ local t = token.get_next()
+ cstemp=token.csname_name(t)
+ if g then luatexja.is_global = '\\global' else luatexja.is_global = '' end
+ tex.sprint(cat_lp, '\\expandafter\\font\\csname ' .. cstemp .. '\\endcsname')
+end
+
+luatexbase.create_callback("luatexja.define_jfont", "data", function (ft, fn) return ft end)
+
+-- EXT
+function jfontdefY() -- for horizontal font
+ local j = load_jfont_metric()
+ local fn = font.id(cstemp)
+ local f = font.fonts[fn]
+ if not j then
+ ltjb.package_error('luatexja',
+ "bad JFM `" .. jfm_file_name .. "'",
+ 'The JFM file you specified is not valid JFM file.\n'..
+ 'So defining Japanese font is cancelled.')
+ tex.sprint(cat_lp, luatexja.is_global .. '\\expandafter\\let\\csname ' ..cstemp
+ .. '\\endcsname=\\relax')
+ return
+ end
+ update_jfm_cache(j, f.size)
+ local fmtable = { jfm = j, size = f.size, var = jfm_var }
+ fmtable = luatexbase.call_callback("luatexja.define_jfont", fmtable, fn)
+ font_metric_table[fn]=fmtable
+ tex.sprint(cat_lp, luatexja.is_global .. '\\protected\\expandafter\\def\\csname '
+ .. cstemp .. '\\endcsname{\\ltj@curjfnt=' .. fn .. '\\relax}')
+end
+
+-- zw, zh
+function load_zw()
+ local a = font_metric_table[tex.attribute[attr_curjfnt]]
+ if a then
+ tex.setdimen('ltj@zw', metrics[a.jfm].size_cache[a.size].zw)
+ else
+ tex.setdimen('ltj@zw',0)
+ end
+end
+
+function load_zh()
+ local a = font_metric_table[tex.attribute[attr_curjfnt]]
+ if a then
+ tex.setdimen('ltj@zh', metrics[a.jfm].size_cache[a.size].zh)
+ else
+ tex.setdimen('ltj@zh',0)
+ end
+end
+
+-- extract jfm_file_name and jfm_var
+local function extract_metric(name)
+ local basename=name
+ local tmp = utf.sub(basename, 1, 5)
+ jfm_file_name = ''; jfm_var = ''
+ if tmp == 'file:' or tmp == 'name:' or tmp == 'psft:' then
+ basename = utf.sub(basename, 6)
+ end
+ local p = utf.find(basename, ":")
+ if p then
+ basename = utf.sub(basename, p+1)
+ else return
+ end
+ -- now basename contains 'features' only.
+ p=1
+ while p do
+ local q = utf.find(basename, ";", p+1) or utf.len(basename)+1
+ if utf.sub(basename, p, p+3)=='jfm=' and q>p+4 then
+ jfm_file_name = utf.sub(basename, p+4, q-1)
+ elseif utf.sub(basename, p, p+6)=='jfmvar=' and q>p+6 then
+ jfm_var = utf.sub(basename, p+7, q-1)
+ end
+ if utf.len(basename)+1==q then p = nil else p = q + 1 end
+ end
+ return
+end
+
+-- replace fonts.define.read()
+local ljft_dr_orig = fonts.define.read
+function fonts.define.read(name, size, id)
+ extract_metric(name)
+ -- In the present imple., we don't remove "jfm=..." from name.
+ return ljft_dr_orig(name, size, id)
+end
+
+------------------------------------------------------------------------
+-- MISC
+------------------------------------------------------------------------
+
+-- EXT: italic correction
+function append_italic()
+ local p = tex.nest[tex.nest.ptr].tail
+ if p and p.id==id_glyph then
+ local f = p.font
+ local g = node_new(id_kern)
+ g.subtype = 1; node.set_attribute(g, attr_icflag, ITALIC)
+ if ltjc.is_ucs_in_japanese_char(p) then
+ f = has_attr(p, attr_curjfnt)
+ local j = font_metric_table[f]
+ local c = find_char_class(p.char, j)
+ g.kern = metrics[j.jfm].size_cache[j.size].char_type[c].italic
+ else
+ g.kern = font.fonts[f].characters[p.char].italic
+ end
+ node.write(g)
+ tex.attribute[attr_icflag] = -(0x7FFFFFFF)
+ end
+end