--
luatexbase.provides_module({
name = 'luatexja.charrange',
- date = '2011/04/01',
- version = '0.1',
+ date = '2014/05/08',
description = 'Handling the range of Japanese characters',
})
module('luatexja.charrange', package.seeall)
luatexja.load_module('base'); local ltjb = luatexja.base
+local Dnode = node.direct or node
+local getchar = (Dnode ~= node) and Dnode.getchar or function(n) return n.char end
+local has_attr = Dnode.has_attribute
+local has_attr_node = node.has_attribute
+local tex_getattr = tex.getattribute
+
ATTR_RANGE = 7
+local jcr_cjk, jcr_noncjk = 0, 1
local floor = math.floor
local pow = math.pow
-local has_attr = node.has_attribute
local kcat_attr_table = {}
local pow_table = {}
+local fn_table = {} -- used in is_ucs_in_japanese_char_direct
+local nfn_table = {} -- used in is_ucs_in_japanese_char_node
for i = 0, 31*ATTR_RANGE-1 do
- kcat_attr_table[i] = luatexbase.attributes['ltj@kcat'..floor(i/31)]
- pow_table[i] = pow(2, i%31)
+ local ka, pw = luatexbase.attributes['ltj@kcat'..floor(i/31)], 1/pow(2, i%31)
+ local jcr_noncjk = jcr_noncjk
+ kcat_attr_table[i], pow_table[i] = ka, pow(2, i%31)
+ fn_table[i] = function(p) return floor(has_attr(p, ka)*pw)%2 ~= jcr_noncjk end
+ nfn_table[i] = function(p) return floor(has_attr_node(p, ka)*pw)%2 ~= jcr_noncjk end
end
+fn_table[-1] = function() return false end -- for char --U+007F
+nfn_table[-1] = function() return false end -- for char --U+007F
pow_table[31*ATTR_RANGE] = pow(2, 31)
-- jcr_table_main[chr_code] = index
--- index : internal 0, 1, 2, ..., 216 0: 'other'
--- external 1 2 216, (out of range): 'other'
+-- index : internal 0, 1, 2, ..., 216 0: 'other'
+-- external 217, 1 2 216, 217 and (out of range): 'other'
-- initialize
-local jcr_table_main = {}
-local jcr_cjk = 0; local jcr_noncjk = 1; local ucs_out = 0x110000
+jcr_table_main = {}
+local jcr_table_main = jcr_table_main
+local ucs_out = 0x110000
+for i=0x0 ,0x7F do jcr_table_main[i]=-1 end
for i=0x80 ,0xFF do jcr_table_main[i]=1 end
for i=0x100,ucs_out-1 do jcr_table_main[i]=0 end
-- EXT: add characters to a range
function add_char_range(b,e,ind) -- ind: external range number
- if not ind or ind<0 or ind>=7*ATTR_RANGE then -- 0 は error にしない（隠し）
+ if not ind or ind<0 or ind>31*ATTR_RANGE then -- 0 はエラーにしない（隠し）
ltjb.package_error('luatexja',
"invalid character range number (" .. ind .. ")",
"A character range number should be in the range 1.."
- .. 7+ATTR_RANGE-1 .. ",\n" ..
+ .. 31*ATTR_RANGE .. ",\n" ..
"ignored.")
return
elseif b<0x80 or e>=ucs_out then
elseif b>e then
local j=b; e=b; b=j
end
+ if ind == 31*ATTR_RANGE then ind=0 end
for i=math.max(0x80,b),math.min(ucs_out-1,e) do
jcr_table_main[i]=ind
end
end
-function char_to_range(c) -- return the (external) range number
- if not c or c<0 or c>0x10FFFF then
- ltjb.package_error('luatexja',
- 'bad character code (' .. tostring(c) .. ')',
- 'A character number must be between 0 and 0x10ffff.\n' ..
- 'So I changed this one to zero.')
- c=0
- elseif c<0x80 then return -1
- else return jcr_table_main[c] or 0 end
+function char_to_range(c) -- return the external range number
+ local r = jcr_table_main[ltjb.in_unicode(c, false)] or 217
+ return (r~=0) and r or 217
end
function get_range_setting(i) -- i: internal range number
- return floor(tex.getattribute(kcat_attr_table[i])/pow_table[i])%2
+ return floor(tex_getattr(kcat_attr_table[i])/pow_table[i])%2
end
-- glyph_node p は和文文字か？
-function is_ucs_in_japanese_char(p)
- local c = p.char
- if c<0x80 then
- return false
- else
- local i=jcr_table_main[c]
- return (floor(
- has_attr(p, kcat_attr_table[i])/pow_table[i])%2 ~= jcr_noncjk)
- end
+function is_ucs_in_japanese_char_node(p)
+ return nfn_table[jcr_table_main[c or p.char]](p)
+end
+is_ucs_in_japanese_char = is_ucs_in_japanese_char_node
+-- only ltj-otf.lua uses this version
+
+function is_ucs_in_japanese_char_direct(p ,c)
+ return fn_table[jcr_table_main[c or getchar(p)]](p)
+end
+
+function is_japanese_char_curlist(c) -- assume that c>=0x80
+ return get_range_setting(jcr_table_main[c])~= jcr_noncjk
end
-- EXT
if i>0 then kc=0 else kc=1; i=-i end
if i>=7*ATTR_RANGE then i=0 end
local attr = kcat_attr_table[i]
- local a = tex.getattribute(attr)
- tex.setattribute(g,attr,(floor(a/pow_table[i+1])*2+kc)*pow_table[i]+a%pow_table[i])
+ local a = tex_getattr(attr)
+ tex.setattribute(g, attr,
+ (floor(a/pow_table[i+1])*2+kc)*pow_table[i]+a%pow_table[i])
end
end
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