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--
-- luatexja/ltj-inputbuf.lua
--
luatexja.load_module('base'); local ltjb = luatexja.base
luatexja.load_module('charrange'); local ltjc = luatexja.charrange
require("unicode")
local utflen = utf.len
local utfbyte = utf.byte
local utfchar = utf.char
local node_new = node.new
local node_free = node.free
local id_glyph = node.id('glyph')
local getcatcode, getcount = tex.getcatcode, tex.getcount
local ltjc_is_japanese_char_curlist = ltjc.is_japanese_char_curlist
--- the following function is modified from jafontspec.lua (by K. Maeda).
--- Instead of "%", we use U+FFFFF for suppressing spaces.
--DEBUG require"socket"
local time_line = 0
local start_time_measure, stop_time_measure
= ltjb.start_time_measure, ltjb.stop_time_measure
local function add_comment(buffer)
start_time_measure('inputbuf')
local i = utflen(buffer)
while (i>0) and (getcatcode(utfbyte(buffer, i))==1
or getcatcode(utfbyte(buffer, i))==2) do
i=i-1
end
if i>0 then
local c = utfbyte(buffer, i)
if c>=0x80 then
local ct = getcatcode(c)
local te = tex.endlinechar
local ctl = (te ~= -1) and (getcatcode(te)==5) and (getcatcode(getcount('ltjlineendcomment'))==14)
-- Is the catcode of endline character is 5 (end-of-line)?
-- Is the catcode of \ltjlineendcomment (new comment char) is 14 (comment)?
if ((ct==11) or (ct==12)) and ctl then
if ltjc_is_japanese_char_curlist(c) then
buffer = buffer .. utfchar(getcount('ltjlineendcomment'))
end
end
end
end
stop_time_measure('inputbuf')
return buffer
end
luatexbase.add_to_callback('process_input_buffer',
add_comment,'ltj.process_input_buffer')
--EOF
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