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
|
/* Conversion from and to IBM1364.
Copyright (C) 2005-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <stdint.h>
#include <wchar.h>
#include <byteswap.h>
#ifndef CHARSET_NAME
/* This is really the IBM1364 converter, not another module sharing
the code. */
# define DATA_HEADER "ibm1364.h"
# define CHARSET_NAME "IBM1364//"
# define FROM_LOOP from_ibm1364
# define TO_LOOP to_ibm1364
# define SB_TO_UCS4 __ibm1364sb_to_ucs4
# define DB_TO_UCS4_IDX __ibm1364db_to_ucs4_idx
# define DB_TO_UCS4 __ibm1364db_to_ucs4
# define UCS4_TO_SB_IDX __ucs4_to_ibm1364sb_idx
# define UCS4_TO_SB __ucs4_to_ibm1364sb
# define UCS4_TO_DB_IDX __ucs4_to_ibm1364db_idx
# define UCS4_TO_DB __ucs4_to_ibm1364db
# define UCS_LIMIT 0xffff
#endif
#include DATA_HEADER
/* The shift sequences for this charset (it does not use ESC). */
#define SI 0x0F /* Shift In, host code to turn DBCS off. */
#define SO 0x0E /* Shift Out, host code to turn DBCS on. */
/* Definitions used in the body of the `gconv' function. */
#define MIN_NEEDED_FROM 1
#define MAX_NEEDED_FROM 2
#define MIN_NEEDED_TO 4
#ifdef HAS_COMBINED
# define MAX_NEEDED_TO 8
#else
# define MAX_NEEDED_TO 4
#endif
#define ONE_DIRECTION 0
#define PREPARE_LOOP \
int save_curcs; \
int *curcsp = &data->__statep->__count;
#define EXTRA_LOOP_ARGS , curcsp
/* Definitions of initialization and destructor function. */
#define DEFINE_INIT 1
#define DEFINE_FINI 1
/* Since this is a stateful encoding we have to provide code which resets
the output state to the initial state. This has to be done during the
flushing. */
#define EMIT_SHIFT_TO_INIT \
if ((data->__statep->__count & ~7) != sb) \
{ \
if (FROM_DIRECTION) \
data->__statep->__count &= 7; \
else \
{ \
/* We are not in the initial state. To switch back we have \
to emit `SI'. */ \
if (__glibc_unlikely (outbuf >= outend)) \
/* We don't have enough room in the output buffer. */ \
status = __GCONV_FULL_OUTPUT; \
else \
{ \
/* Write out the shift sequence. */ \
*outbuf++ = SI; \
data->__statep->__count &= 7; \
} \
} \
}
/* Since we might have to reset input pointer we must be able to save
and restore the state. */
#define SAVE_RESET_STATE(Save) \
if (Save) \
save_curcs = *curcsp; \
else \
*curcsp = save_curcs
/* Current codeset type. */
enum
{
sb = 0,
db = 64
};
/* Subroutine to write out converted UCS4 from IBM-13XX. */
#ifdef HAS_COMBINED
# define SUB_COMBINED_UCS_FROM_IBM13XX \
{ \
if (res != UCS_LIMIT || ch < __TO_UCS4_COMBINED_MIN \
|| ch > __TO_UCS4_COMBINED_MAX) \
{ \
put32 (outptr, res); \
outptr += 4; \
} \
else \
{ \
/* This is a combined character. Make sure we have room. */ \
if (__glibc_unlikely (outptr + 8 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
\
const struct divide *cmbp \
= &DB_TO_UCS4_COMB[ch - __TO_UCS4_COMBINED_MIN]; \
assert (cmbp->res1 != 0 && cmbp->res2 != 0); \
\
put32 (outptr, cmbp->res1); \
outptr += 4; \
put32 (outptr, cmbp->res2); \
outptr += 4; \
} \
}
#else
# define SUB_COMBINED_UCS_FROM_IBM13XX \
{ \
put32 (outptr, res); \
outptr += 4; \
}
#endif /* HAS_COMBINED */
/* First, define the conversion function from IBM-13XX to UCS4. */
#define MIN_NEEDED_INPUT MIN_NEEDED_FROM
#define MAX_NEEDED_INPUT MAX_NEEDED_FROM
#define MIN_NEEDED_OUTPUT MIN_NEEDED_TO
#define MAX_NEEDED_OUTPUT MAX_NEEDED_TO
#define LOOPFCT FROM_LOOP
#define BODY \
{ \
uint32_t ch = *inptr; \
\
if (__builtin_expect (ch, 0) == SO) \
{ \
/* Shift OUT, change to DBCS converter (redundant escape okay). */ \
curcs = db; \
++inptr; \
continue; \
} \
if (__builtin_expect (ch, 0) == SI) \
{ \
/* Shift IN, change to SBCS converter (redundant escape okay). */ \
curcs = sb; \
++inptr; \
continue; \
} \
\
if (curcs == sb) \
{ \
/* Use the IBM13XX table for single byte. */ \
uint32_t res = SB_TO_UCS4[ch]; \
if (__builtin_expect (res, L'\1') == L'\0' && ch != '\0') \
{ \
/* This is an illegal character. */ \
if (! ignore_errors_p ()) \
{ \
result = __gconv_mark_illegal_input (step_data); \
break; \
} \
++*irreversible; \
} \
else \
{ \
put32 (outptr, res); \
outptr += 4; \
} \
++inptr; \
} \
else \
{ \
assert (curcs == db); \
\
if (__glibc_unlikely (inptr + 1 >= inend)) \
{ \
/* The second character is not available. Store the \
intermediate result. */ \
result = __GCONV_INCOMPLETE_INPUT; \
break; \
} \
\
ch = (ch * 0x100) + inptr[1]; \
\
/* Use the IBM1364 table for double byte. */ \
const struct gap *rp2 = DB_TO_UCS4_IDX; \
while (ch > rp2->end) \
++rp2; \
\
uint32_t res; \
if (__builtin_expect (rp2->start == 0xffff, 0) \
|| __builtin_expect (ch < rp2->start, 0) \
|| (res = DB_TO_UCS4[ch + rp2->idx], \
__builtin_expect (res, L'\1') == L'\0' && ch != '\0')) \
{ \
/* This is an illegal character. */ \
if (! ignore_errors_p ()) \
{ \
result = __gconv_mark_illegal_input (step_data); \
break; \
} \
++*irreversible; \
} \
else \
{ \
SUB_COMBINED_UCS_FROM_IBM13XX; \
} \
inptr += 2; \
} \
}
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS , int *curcsp
#define INIT_PARAMS int curcs = *curcsp & ~7
#define UPDATE_PARAMS *curcsp = curcs
#include <iconv/loop.c>
/* Subroutine to convert two UCS4 codes to IBM-13XX. */
#ifdef HAS_COMBINED
# define SUB_COMBINED_UCS_TO_IBM13XX \
{ \
const struct combine *cmbp = UCS4_COMB_TO_DB; \
while (cmbp->res1 < ch) \
++cmbp; \
/* XXX if last char is beginning of combining store in state */ \
if (cmbp->res1 == ch && inptr + 4 < inend) \
{ \
/* See if input is part of a combined character. */ \
uint32_t ch_next = get32 (inptr + 4); \
while (cmbp->res2 != ch_next) \
{ \
++cmbp; \
if (cmbp->res1 != ch) \
goto not_combined; \
} \
\
/* It is a combined character. First make sure we are in \
double byte mode. */ \
if (curcs == sb) \
{ \
/* We know there is room for at least one byte. */ \
*outptr++ = SO; \
curcs = db; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = cmbp->ch[0]; \
*outptr++ = cmbp->ch[1]; \
inptr += 8; \
continue; \
\
not_combined:; \
} \
}
#else
# define SUB_COMBINED_UCS_TO_IBM13XX
#endif /* HAS_COMBINED */
/* Next, define the other direction. */
#define MIN_NEEDED_INPUT MIN_NEEDED_TO
#define MAX_NEEDED_INPUT MAX_NEEDED_TO
#define MIN_NEEDED_OUTPUT MIN_NEEDED_FROM
#define MAX_NEEDED_OUTPUT MAX_NEEDED_FROM
#define LOOPFCT TO_LOOP
#define BODY \
{ \
uint32_t ch = get32 (inptr); \
\
if (__glibc_unlikely (ch >= UCS_LIMIT)) \
{ \
UNICODE_TAG_HANDLER (ch, 4); \
\
if (! ignore_errors_p ()) \
{ \
result = __gconv_mark_illegal_input (step_data); \
break; \
} \
++*irreversible; \
inptr += 4; \
continue; \
} \
\
SUB_COMBINED_UCS_TO_IBM13XX; \
\
const struct gap *rp1 = UCS4_TO_SB_IDX; \
while (ch > rp1->end) \
++rp1; \
\
/* Use the UCS4 table for single byte. */ \
const char *cp; \
if (__builtin_expect (ch < rp1->start, 0) \
|| (cp = UCS4_TO_SB[ch + rp1->idx], \
__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
{ \
/* Use the UCS4 table for double byte. */ \
const struct gap *rp2 = UCS4_TO_DB_IDX; \
while (ch > rp2->end) \
++rp2; \
\
if (__builtin_expect (ch < rp2->start, 0) \
|| (cp = UCS4_TO_DB[ch + rp2->idx], \
__builtin_expect (cp[0], L'\1') == L'\0' && ch != '\0')) \
{ \
/* This is an illegal character. */ \
if (! ignore_errors_p ()) \
{ \
result = __gconv_mark_illegal_input (step_data); \
break; \
} \
++*irreversible; \
} \
else \
{ \
if (curcs == sb) \
{ \
/* We know there is room for at least one byte. */ \
*outptr++ = SO; \
curcs = db; \
} \
\
if (__glibc_unlikely (outptr + 2 > outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
*outptr++ = cp[0]; \
*outptr++ = cp[1]; \
} \
} \
else \
{ \
if (__glibc_unlikely (curcs == db)) \
{ \
/* We know there is room for at least one byte. */ \
*outptr++ = SI; \
curcs = sb; \
\
if (__glibc_unlikely (outptr >= outend)) \
{ \
result = __GCONV_FULL_OUTPUT; \
break; \
} \
} \
\
*outptr++ = cp[0]; \
} \
\
/* Now that we wrote the output increment the input pointer. */ \
inptr += 4; \
}
#define LOOP_NEED_FLAGS
#define EXTRA_LOOP_DECLS , int *curcsp
#define INIT_PARAMS int curcs = *curcsp & ~7
#define REINIT_PARAMS curcs = *curcsp & ~7
#define UPDATE_PARAMS *curcsp = curcs
#include <iconv/loop.c>
/* Now define the toplevel functions. */
#include <iconv/skeleton.c>
|
