-- luatexko-uhc2utf8.lua -- -- Copyright (c) 2013 Dohyun Kim -- -- This work may be distributed and/or modified under the -- conditions of the LaTeX Project Public License, either version 1.3c -- of this license or (at your option) any later version. -- The latest version of this license is in -- http://www.latex-project.org/lppl.txt -- and version 1.3c or later is part of all distributions of LaTeX -- version 2006/05/20 or later. module('luatexkouhc2utf8', package.seeall) luatexbase.provides_module({ name = "luatexko-uhc2utf8", version = 1.0, date = "2013/05/10", author = "Dohyun Kim", description = "UHC (CP949) input encoding", license = "LPPL v1.3+", }) local find = string.find local gsub = string.gsub local byte = string.byte local len = string.len local format = string.format local ugsub = unicode.utf8.gsub local ubyte = unicode.utf8.byte local uchar = unicode.utf8.char local floor = math.floor local isfile = lfs.isfile local kpse_find_file = kpse.find_file local add_to_callback = luatexbase.add_to_callback local remove_from_callback = luatexbase.remove_from_callback local function get_uhc_uni_table() local t_uhc2ucs = {} local file = kpse_find_file("KSCms-UHC-UCS2","cmap files") if file then file = io.open(file, "r") while true do local line = file:read("*line") if not line then break end local _,_,ea,eb,uni = find(line,"<(%x+)>%s+<(%x+)>%s+<(%x+)>") if ea and eb and uni then ea, eb, uni = tonumber(ea,16),tonumber(eb,16),tonumber(uni,16) for i=ea,eb do t_uhc2ucs[i] = uni uni = uni + 1 end end end file:close() end return t_uhc2ucs end local t_uhc2ucs = t_uhc2ucs or get_uhc_uni_table() local uhc_to_utf8 = function(buffer) if not buffer then return end -- check if buffer is already utf-8; better solution? local t = gsub(buffer,"[\0-\127]","") t = gsub(t,"[\194-\223][\128-\191]","") t = gsub(t,"[\224-\239][\128-\191][\128-\191]","") t = gsub(t,"[\240-\244][\128-\191][\128-\191][\128-\191]","") if len(t) == 0 then return buffer end -- now convert to utf8 buffer = gsub(buffer, "([\129-\253])([\65-\254])", function(a, b) a, b = byte(a), byte(b) local utf = t_uhc2ucs[a * 256 + b] if utf then return uchar(utf) end end) return buffer end function startconvert () add_to_callback('process_input_buffer', uhc_to_utf8, 'luatexko-uhctoutf8', 1) end function stopconvert () remove_from_callback('process_input_buffer', 'luatexko-uhctoutf8') end ----------------------------------------- -- Hangul Windows OS uses CP949 filenames ----------------------------------------- local function get_uni_uhc_table() local t_ucs2uhc = {} for i,v in pairs(t_uhc2ucs) do t_ucs2uhc[v] = i end return t_ucs2uhc end local t_ucs2uhc = t_ucs2uhc or get_uni_uhc_table() local function utf8_to_uhc (name) if not name then return end name = ugsub(name, "[\161-\239\191\166]", -- 00A1..FFE6 function(u) local c = t_ucs2uhc[ubyte(u)] if not c then return u end return format("%c%c", floor(c/256), c%256) end) return name end local function uhc_find_file (file, ...) local f = kpse_find_file(file, ...) if f then return f end f = utf8_to_uhc(file) f = f and kpse_find_file(f, ...) return f end function start_uhc_filename () add_to_callback('find_read_file', function(id, name) return uhc_find_file(name) end, 'luatexko-touhc-findreadfile') add_to_callback('find_image_file', uhc_find_file, 'luatexko-touhc-findimagefile') kpse.find_file = uhc_find_file end function stop_uhc_filename () remove_from_callback('find_read_file', 'luatexko-touhc-findreadfile') remove_from_callback('find_image_file', 'luatexko-touhc-findimagefile') kpse.find_file = kpse_find_file end