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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/luatex/generic/luatexja/src/ltj-compat.lua
Initial commit
Diffstat (limited to 'macros/luatex/generic/luatexja/src/ltj-compat.lua')
-rw-r--r--macros/luatex/generic/luatexja/src/ltj-compat.lua140
1 files changed, 140 insertions, 0 deletions
diff --git a/macros/luatex/generic/luatexja/src/ltj-compat.lua b/macros/luatex/generic/luatexja/src/ltj-compat.lua
new file mode 100644
index 0000000000..bd798545f3
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+++ b/macros/luatex/generic/luatexja/src/ltj-compat.lua
@@ -0,0 +1,140 @@
+--
+-- luatexja/ltj-compat.lua
+--
+
+luatexja.load_module('base'); local ltjb = luatexja.base
+luatexja.load_module('stack'); local ltjs = luatexja.stack
+local stack_table_index = luatexja.stack_table_index
+
+-- load jisx0208 table
+local cache_ver = 2
+
+local cache_outdate_fn = function (t) return t.version~=cache_ver end
+local jisx0208 = ltjb.load_cache('ltj-jisx0208',cache_outdate_fn)
+if not jisx0208 then -- make cache
+ jisx0208 = require('ltj-jisx0208.lua')
+ ltjb.save_cache_luc('ltj-jisx0208', jisx0208)
+end
+
+
+-- \kuten, \jis, \euc, \sjis, \ucs, \kansuji
+local utfchar=utf.char
+local function to_kansuji(num)
+ if not num then num=0; return
+ elseif num<0 then
+ num = -num; tex.write('-')
+ end
+ local s = ""
+ while num~=0 do
+ s = utfchar(
+ ltjs.get_stack_table(luatexja.stack_table_index.KSJ + num%10,
+ '', tex.getcount('ltj@@stack'))) .. s
+ num=math.floor(num/10)
+ end
+ tex.write(s)
+end
+
+-- \ucs: 単なる identity
+local function from_ucs(i)
+ if type(i)~='number' then
+ ltjb.package_error('luatexja',
+ "invalid character code (".. tostring(i) .. ")",
+ "I'm going to use 0 instead of that illegal character code.")
+ i=0
+ end
+ tex.write(i)
+end
+
+-- \kuten: 面区点 (それぞれで16進2桁を使用)=> Unicode 符号位置
+local function from_kuten(i)
+ if type(i)~='number' then
+ ltjb.package_error('luatexja',
+ "invalid character code (".. tostring(i) .. ")",
+ "I'm going to use 0 instead of that illegal character code.")
+ i=0
+ end
+ tex.write(tostring(jisx0208.table_jisx0208_uptex[i] or 0))
+end
+
+-- \euc: EUC-JP による符号位置 => Unicode 符号位置
+local function from_euc(i)
+ if type(i)~='number' then
+ ltjb.package_error('luatexja',
+ "invalid character code (".. tostring(i) .. ")",
+ "I'm going to use 0 instead of that illegal character code.")
+ i=0
+ elseif i>=0x10000 or i<0xa0a0 then
+ i=0
+ end
+ from_kuten(i-0xa0a0)
+end
+
+-- \jis: ISO-2022-JP による符号位置 => Unicode 符号位置
+local function from_jis(i)
+ if (type(i)~='number') or i>=0x10000 or i<0 then
+ ltjb.package_error('luatexja',
+ "invalid character code (".. tostring(i) .. ")",
+ "I'm going to use 0 instead of that illegal character code.")
+ i=0
+ end
+ from_kuten(i-0x2020)
+end
+
+-- \sjis: Shift_JIS による符号位置 => Unicode 符号位置
+local function from_sjis(i)
+ if (type(i)~='number') or i>=0x10000 or i<0 then
+ ltjb.package_error('luatexja',
+ "invalid character code (".. tostring(i) .. ")",
+ "I'm going to use 0 instead of that illegal character code.")
+ tex.write('0'); return
+ end
+ local c2 = math.floor(i/256)
+ local c1 = i%256
+ local shift_jisx0213_s1a3_table = {
+ { [false]= 1, [true]= 8},
+ { [false]= 3, [true]= 4},
+ { [false]= 5, [true]=12},
+ { [false]=13, [true]=14},
+ { [false]=15 } }
+ if c2 >= 0x81 then
+ if c2 >= 0xF0 then -- this if block won't be true
+ if (c2 <= 0xF3 or (c2 == 0xF4 and c1 < 0x9F)) then
+ c2 = 0x100 + shift_jisx0213_s1a3_table[c2 - 0xF0 + 1][(0x9E < c1)];
+ else -- 78<=k<=94
+ c2 = c2 * 2 - 413 + 0x100; if 0x9E < c1 then c2=c2+1 end
+ end
+ else
+ if c2<=0x9f then i=0x101 else i=0x181 end
+ c2 = c2 + c2 - i; if 0x9E < c1 then c2=c2+1 end
+ end
+ if c1 < 0x9F then
+ if c1>0x7f then i=0x40 else i=0x3f end
+ c1 = c1 - i
+ else
+ c1 = c1 - 0x9e
+ end
+ from_kuten(c2*256+c1)
+ end
+end
+
+luatexja.binary_pars.kansujichar = function(c, t)
+ if type(c)~='number' or c<0 or c>9 then
+ ltjb.package_error('luatexja',
+ 'Invalid KANSUJI number (' .. tostring(c) .. ')',
+ 'A KANSUJI number should be in the range 0..9.\n'..
+ 'So I changed this one to zero.')
+ c=0
+ end
+ return ltjs.get_stack_table(stack_table_index.KSJ + c, 0, t)
+end
+
+
+local t = {
+ from_euc = from_euc,
+ from_kuten = from_kuten,
+ from_jis = from_jis,
+ from_sjis = from_sjis,
+ from_ucs = from_ucs,
+ to_kansuji = to_kansuji,
+}
+luatexja.compat = t