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
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
|
//
// I18N.CJK.CP949
//
// Author:
// Hye-Shik Chang (perky@FreeBSD.org)
// Atsushi Enomoto <atsushi@ximian.com>
//
using System;
using System.Text;
using I18N.Common;
namespace I18N.CJK
{
[Serializable]
internal class CP949 : KoreanEncoding
{
// Magic number used by Windows for the UHC code page.
private const int UHC_CODE_PAGE = 949;
// Constructor.
public CP949 () : base (UHC_CODE_PAGE, true)
{
}
// Get the mail body name for this encoding.
public override String BodyName
{
get { return "ks_c_5601-1987"; }
}
// Get the human-readable name for this encoding.
public override String EncodingName
{
get { return "Korean (UHC)"; }
}
// Get the mail agent header name for this encoding.
public override String HeaderName
{
get { return "ks_c_5601-1987"; }
}
// Get the IANA-preferred Web name for this encoding.
public override String WebName
{
get { return "ks_c_5601-1987"; }
}
/*
// Get the Windows code page represented by this object.
public override int WindowsCodePage
{
get { return UHC_PAGE; }
}
*/
}
[Serializable]
internal class CP51949 : KoreanEncoding
{
// Magic number used by Windows for the euc-kr code page.
private const int EUCKR_CODE_PAGE = 51949;
// Constructor.
public CP51949 () : base (EUCKR_CODE_PAGE, false)
{
}
// Get the mail body name for this encoding.
public override String BodyName
{
get { return "euc-kr"; }
}
// Get the human-readable name for this encoding.
public override String EncodingName
{
get { return "Korean (EUC)"; }
}
// Get the mail agent header name for this encoding.
public override String HeaderName
{
get { return "euc-kr"; }
}
// Get the IANA-preferred Web name for this encoding.
public override String WebName
{
get { return "euc-kr"; }
}
/*
// Get the Windows code page represented by this object.
public override int WindowsCodePage
{
get { return UHC_PAGE; }
}
*/
}
[Serializable]
internal class KoreanEncoding : DbcsEncoding
{
// Constructor.
public KoreanEncoding (int codepage, bool useUHC)
: base (codepage, 949) {
this.useUHC = useUHC;
}
internal override DbcsConvert GetConvert ()
{
return DbcsConvert.KS;
}
bool useUHC;
// Get the bytes that result from encoding a character buffer.
public unsafe override int GetByteCountImpl (char* chars, int count)
{
int index = 0;
int length = 0;
DbcsConvert convert = GetConvert ();
#if NET_2_0
EncoderFallbackBuffer buffer = null;
#endif
// 00 00 - FF FF
while (count-- > 0) {
char c = chars[index++];
if (c <= 0x80 || c == 0xFF) { // ASCII
length++;
continue;
}
byte b1 = convert.u2n[((int)c) * 2];
byte b2 = convert.u2n[((int)c) * 2 + 1];
if (b1 == 0 && b2 == 0) {
#if NET_2_0
// FIXME: handle fallback for GetByteCountImpl().
length++;
#else
length++;
#endif
}
else
length += 2;
}
return length;
}
// Get the bytes that result from encoding a character buffer.
public unsafe override int GetBytesImpl (char* chars, int charCount,
byte* bytes, int byteCount)
{
int charIndex = 0;
int byteIndex = 0;
DbcsConvert convert = GetConvert ();
#if NET_2_0
EncoderFallbackBuffer buffer = null;
#endif
// 00 00 - FF FF
int origIndex = byteIndex;
while (charCount-- > 0) {
char c = chars[charIndex++];
if (c <= 0x80 || c == 0xFF) { // ASCII
bytes[byteIndex++] = (byte)c;
continue;
}
byte b1 = convert.u2n[((int)c) * 2];
byte b2 = convert.u2n[((int)c) * 2 + 1];
if (b1 == 0 && b2 == 0) {
#if NET_2_0
HandleFallback (ref buffer, chars, ref charIndex, ref charCount,
bytes, ref byteIndex, ref byteCount);
#else
bytes[byteIndex++] = (byte)'?';
#endif
} else {
bytes[byteIndex++] = b1;
bytes[byteIndex++] = b2;
}
}
return byteIndex - origIndex;
}
// Get the characters that result from decoding a byte buffer.
public override int GetCharCount (byte[] bytes, int index, int count)
{
return GetDecoder ().GetCharCount (bytes, index, count);
}
// Get the characters that result from decoding a byte buffer.
public override int GetChars(byte[] bytes, int byteIndex, int byteCount,
char[] chars, int charIndex)
{
return GetDecoder ().GetChars (bytes, byteIndex, byteCount, chars, charIndex);
}
// Get a decoder that handles a rolling UHC state.
public override Decoder GetDecoder()
{
return new KoreanDecoder (GetConvert (), useUHC);
}
// Decoder that handles a rolling UHC state.
private sealed class KoreanDecoder : DbcsDecoder
{
// Constructor.
public KoreanDecoder (DbcsConvert convert, bool useUHC)
: base(convert)
{
this.useUHC = useUHC;
}
bool useUHC;
int last_byte_count, last_byte_conv;
public override int GetCharCount (byte[] bytes, int index, int count)
{
return GetCharCount (bytes, index, count, false);
}
#if NET_2_0
public override
#endif
int GetCharCount (byte [] bytes, int index, int count, bool refresh)
{
CheckRange (bytes, index, count);
int lastByte = last_byte_count;
last_byte_count = 0;
int length = 0;
while (count-- > 0) {
int b = bytes[index++];
if (lastByte == 0) {
if (b <= 0x80 || b == 0xFF) { // ASCII
length++;
continue;
} else {
lastByte = b;
continue;
}
}
char c1;
if (useUHC && lastByte < 0xa1) { // UHC Level 1
int ord = 8836 + (lastByte - 0x81) * 178;
if (b >= 0x41 && b <= 0x5A)
ord += b - 0x41;
else if (b >= 0x61 && b <= 0x7A)
ord += b - 0x61 + 26;
else if (b >= 0x81 && b <= 0xFE)
ord += b - 0x81 + 52;
else
ord = -1;
if (ord >= 0 && ord * 2 <= convert.n2u.Length)
c1 = (char)(convert.n2u[ord*2] +
convert.n2u[ord*2 + 1] * 256);
else
c1 = (char)0;
} else if (useUHC && lastByte <= 0xC6 && b < 0xA1) { // UHC Level 2
int ord = 14532 + (lastByte - 0xA1) * 84;
if (b >= 0x41 && b <= 0x5A)
ord += b - 0x41;
else if (b >= 0x61 && b <= 0x7A)
ord += b - 0x61 + 26;
else if (b >= 0x81 && b <= 0xA0)
ord += b - 0x81 + 52;
else
ord = -1;
if (ord >= 0 && ord * 2 <= convert.n2u.Length)
c1 = (char)(convert.n2u[ord*2] +
convert.n2u[ord*2 + 1] * 256);
else
c1 = (char)0;
} else if (b >= 0xA1 && b <= 0xFE) { // KS X 1001
int ord = ((lastByte - 0xA1) * 94 + b - 0xA1) * 2;
c1 = ord < 0 || ord >= convert.n2u.Length ?
'\0' : (char)(convert.n2u[ord] +
convert.n2u[ord + 1] * 256);
} else
c1 = (char)0;
if (c1 == 0)
// FIXME: fallback
length++;
else
length++;
lastByte = 0;
}
if (lastByte != 0) {
if (refresh) {
// FIXME: fallback
length++;
last_byte_count = 0;
}
else
last_byte_count = lastByte;
}
return length;
}
public override int GetChars(byte[] bytes, int byteIndex,
int byteCount, char[] chars, int charIndex)
{
return GetChars (bytes, byteIndex, byteCount, chars, charIndex, false);
}
#if NET_2_0
public override
#endif
int GetChars(byte[] bytes, int byteIndex,
int byteCount, char[] chars, int charIndex, bool refresh)
{
CheckRange (bytes, byteIndex, byteCount, chars, charIndex);
int origIndex = charIndex;
int lastByte = last_byte_conv;
last_byte_conv = 0;
while (byteCount-- > 0) {
int b = bytes[byteIndex++];
if (lastByte == 0) {
if (b <= 0x80 || b == 0xFF) { // ASCII
chars[charIndex++] = (char)b;
continue;
} else {
lastByte = b;
continue;
}
}
char c1;
if (useUHC && lastByte < 0xa1) { // UHC Level 1
int ord = 8836 + (lastByte - 0x81) * 178;
if (b >= 0x41 && b <= 0x5A)
ord += b - 0x41;
else if (b >= 0x61 && b <= 0x7A)
ord += b - 0x61 + 26;
else if (b >= 0x81 && b <= 0xFE)
ord += b - 0x81 + 52;
else
ord = -1;
if (ord >= 0 && ord * 2 <= convert.n2u.Length)
c1 = (char)(convert.n2u[ord*2] +
convert.n2u[ord*2 + 1] * 256);
else
c1 = (char)0;
} else if (useUHC && lastByte <= 0xC6 && b < 0xA1) { // UHC Level 2
int ord = 14532 + (lastByte - 0xA1) * 84;
if (b >= 0x41 && b <= 0x5A)
ord += b - 0x41;
else if (b >= 0x61 && b <= 0x7A)
ord += b - 0x61 + 26;
else if (b >= 0x81 && b <= 0xA0)
ord += b - 0x81 + 52;
else
ord = -1;
if (ord >= 0 && ord * 2 <= convert.n2u.Length)
c1 = (char)(convert.n2u[ord*2] +
convert.n2u[ord*2 + 1] * 256);
else
c1 = (char)0;
} else if (b >= 0xA1 && b <= 0xFE) { // KS X 1001
int ord = ((lastByte - 0xA1) * 94 + b - 0xA1) * 2;
c1 = ord < 0 || ord >= convert.n2u.Length ?
'\0' : (char)(convert.n2u[ord] +
convert.n2u[ord + 1] * 256);
} else
c1 = (char)0;
if (c1 == 0)
chars[charIndex++] = '?';
else
chars[charIndex++] = c1;
lastByte = 0;
}
if (lastByte != 0) {
if (refresh) {
chars[charIndex++] = '?';
last_byte_conv = 0;
}
else
last_byte_conv = lastByte;
}
return charIndex - origIndex;
}
}
}
[Serializable]
internal class ENCuhc : CP949
{
public ENCuhc() {}
}
[Serializable]
internal class ENCeuc_kr: CP51949
{
public ENCeuc_kr() {}
}
}
// ex: ts=8 sts=4 et
|
