1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
-- luatexko-normalize.lua
--
-- Copyright (c) 2013-2022 Dohyun Kim <nomos at ktug org>
-- Soojin Nam <jsunam at gmail com>
--
-- 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.
luatexbase.provides_module({
name = "luatexko-normalize",
version = "3.5",
date = "2022/11/01",
author = "Dohyun Kim, Soojin Nam",
description = "Hangul normalization",
license = "LPPL v1.3+",
})
luatexko = luatexko or {}
luatexko.normalize = luatexko.normalize or {}
local luatexkonormalize = luatexko.normalize
local utf8codes = utf8.codes
local utf8char = utf8.char
local tableinsert = table.insert
local tableappend = table.append
local tableunpack = table.unpack
local normalize = require'lua-uni-normalize'
local jamotocjamo = {
ccho = {
[0x1100] = 0x3131,
[0x1101] = 0x3132,
-- [0x11AA] = 0x3133,
[0x1102] = 0x3134,
-- [0x11AC] = 0x3135,
-- [0x11AD] = 0x3136,
[0x1103] = 0x3137,
[0x1104] = 0x3138,
[0x1105] = 0x3139,
-- [0x11B0] = 0x313A,
-- [0x11B1] = 0x313B,
-- [0x11B2] = 0x313C,
-- [0x11B3] = 0x313D,
-- [0x11B4] = 0x313E,
-- [0x11B5] = 0x313F,
[0x111A] = 0x3140,
[0x1106] = 0x3141,
[0x1107] = 0x3142,
[0x1108] = 0x3143,
[0x1121] = 0x3144,
[0x1109] = 0x3145,
[0x110A] = 0x3146,
[0x110B] = 0x3147,
[0x110C] = 0x3148,
[0x110D] = 0x3149,
[0x110E] = 0x314A,
[0x110F] = 0x314B,
[0x1110] = 0x314C,
[0x1111] = 0x314D,
[0x1112] = 0x314E,
[0x1114] = 0x3165,
[0x1115] = 0x3166,
-- [0x11C7] = 0x3167,
-- [0x11C8] = 0x3168,
-- [0x11CC] = 0x3169,
-- [0x11CE] = 0x316A,
-- [0x11D3] = 0x316B,
-- [0x11D7] = 0x316C,
-- [0x11D9] = 0x316D,
[0x111C] = 0x316E,
-- [0x11DD] = 0x316F,
-- [0x11DF] = 0x3170,
[0x111D] = 0x3171,
[0x111E] = 0x3172,
[0x1120] = 0x3173,
[0x1122] = 0x3174,
[0x1123] = 0x3175,
[0x1127] = 0x3176,
[0x1129] = 0x3177,
[0x112B] = 0x3178,
[0x112C] = 0x3179,
[0x112D] = 0x317A,
[0x112E] = 0x317B,
[0x112F] = 0x317C,
[0x1132] = 0x317D,
[0x1136] = 0x317E,
[0x1140] = 0x317F,
[0x1147] = 0x3180,
[0x114C] = 0x3181,
-- [0x11F1] = 0x3182,
-- [0x11F2] = 0x3183,
[0x1157] = 0x3184,
[0x1158] = 0x3185,
[0x1159] = 0x3186,
},
cjung = {
[0x1161] = 0x314F,
[0x1162] = 0x3150,
[0x1163] = 0x3151,
[0x1164] = 0x3152,
[0x1165] = 0x3153,
[0x1166] = 0x3154,
[0x1167] = 0x3155,
[0x1168] = 0x3156,
[0x1169] = 0x3157,
[0x116A] = 0x3158,
[0x116B] = 0x3159,
[0x116C] = 0x315A,
[0x116D] = 0x315B,
[0x116E] = 0x315C,
[0x116F] = 0x315D,
[0x1170] = 0x315E,
[0x1171] = 0x315F,
[0x1172] = 0x3160,
[0x1173] = 0x3161,
[0x1174] = 0x3162,
[0x1175] = 0x3163,
-- [0x1160] = 0x3164,
[0x1184] = 0x3187,
[0x1185] = 0x3188,
[0x1188] = 0x3189,
[0x1191] = 0x318A,
[0x1192] = 0x318B,
[0x1194] = 0x318C,
[0x119E] = 0x318D,
[0x11A1] = 0x318E,
}
}
local function is_hangul (c)
return c >= 0xAC00 and c <= 0xD7A3
end
local function is_modern_jong (c)
return c >= 0x11A8 and c <= 0x11C2
end
local function is_old_jong (c)
return c >= 0x11C3 and c <= 0x11FF
or c >= 0xD7CB and c <= 0xD7FB
end
local function is_jongsong (c)
return is_modern_jong(c) or is_old_jong(c)
end
local function syllable2jamo (s) -- integer -> table
local t = {}
s = s - 0xAC00
t[1] = s // 588 + 0x1100
t[2] = s % 588 // 28 + 0x1161
local jong = s % 28
if jong ~= 0 then
t[3] = jong + 0x11A7
end
return t
end
local hanguldecompose = normalize.NFD
-- LV | LVT, T -> L, V, T+
local function flush_syllable_jong (t, s)
if #s == 2 then
tableappend(t, syllable2jamo( s[1] ))
tableinsert(t, s[2])
else
tableappend(t, s)
end
return t, {}
end
local function compose_hanguldecompose (buffer) -- string -> table
local t, s = {}, {}
for _, c in utf8codes(buffer) do
if #s == 1 and is_jongsong(c) then
tableinsert(s, c)
else
t, s = flush_syllable_jong(t, s)
tableinsert(is_hangul(c) and s or t, c)
end
end
t = flush_syllable_jong(t, s)
return t
end
-- L, VF -> CL
local function flush_cjamocho (t, s)
if #s == 2 then
tableinsert(t, jamotocjamo.ccho[ s[1] ])
else
tableappend(t, s)
end
return t, {}
end
local function compose_jamo_chosong (ot)
local t, s = {}, {}
for _, c in ipairs(ot) do
if #s == 1 and c == 0x1160 then
tableinsert(s, c)
else
t, s = flush_cjamocho(t, s)
tableinsert(jamotocjamo.ccho[c] and s or t, c)
end
end
t = flush_cjamocho(t, s)
return t
end
-- LF, V, ^T -> CV, ^T
local function flush_cjamojung (t, s)
if #s == 2 then
tableinsert(t, jamotocjamo.cjung[ s[2] ])
else
tableappend(t, s)
end
return t, {}
end
local function compose_jamo_jungsong (ot)
local t, s = {}, {}
for _, c in ipairs(ot) do
if #s == 1 and jamotocjamo.cjung[c] or #s == 2 and is_jongsong(c) then
tableinsert(s, c)
else
t, s = flush_cjamojung(t, s)
tableinsert(c == 0x115F and s or t, c)
end
end
t = flush_cjamojung(t, s)
return t
end
local function hangulcompose (buffer)
buffer = normalize.NFC(buffer)
local t = compose_hanguldecompose(buffer)
t = compose_jamo_chosong (t)
t = compose_jamo_jungsong(t)
return utf8char(tableunpack(t))
end
local loaded = false
local add_to_callback = luatexbase.add_to_callback
local remove_from_callback = luatexbase.remove_from_callback
local function unload()
if loaded then
remove_from_callback('process_input_buffer', 'luatexko.hangul_normalize')
loaded = false
end
end
luatexkonormalize.unload = unload
local function compose()
unload()
add_to_callback('process_input_buffer', hangulcompose, 'luatexko.hangul_normalize')
loaded = true
end
luatexkonormalize.compose = compose
local function decompose()
unload()
add_to_callback('process_input_buffer', hanguldecompose, 'luatexko.hangul_normalize')
loaded = true
end
luatexkonormalize.decompose = decompose
|