Coverage Report

Created: 2024-02-25 07:20

/src/libfwsi/libuna/libuna_codepage_mac_gaelic.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * MacGaelic codepage functions
3
 *
4
 * Copyright (C) 2008-2024, Joachim Metz <joachim.metz@gmail.com>
5
 *
6
 * Refer to AUTHORS for acknowledgements.
7
 *
8
 * This program is free software: you can redistribute it and/or modify
9
 * it under the terms of the GNU Lesser General Public License as published by
10
 * the Free Software Foundation, either version 3 of the License, or
11
 * (at your option) any later version.
12
 *
13
 * This program is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16
 * GNU General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public License
19
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
20
 */
21
22
#include <common.h>
23
#include <types.h>
24
25
#include "libuna_codepage_mac_gaelic.h"
26
#include "libuna_libcerror.h"
27
#include "libuna_types.h"
28
29
/* Extended ASCII to Unicode character lookup table for the MacGaelic codepage
30
 * Unknown are filled with the Unicode replacement character 0xfffd
31
 */
32
const uint16_t libuna_codepage_mac_gaelic_byte_stream_to_unicode_base_0x80[ 128 ] = {
33
  0x00c4, 0x00c5, 0x00c7, 0x00c9, 0x00d1, 0x00d6, 0x00dc, 0x00e1,
34
  0x00e0, 0x00e2, 0x00e4, 0x00e3, 0x00e5, 0x00e7, 0x00e9, 0x00e8,
35
  0x00ea, 0x00eb, 0x00ed, 0x00ec, 0x00ee, 0x00ef, 0x00f1, 0x00f3,
36
  0x00f2, 0x00f4, 0x00f6, 0x00f5, 0x00fa, 0x00f9, 0x00fb, 0x00fc,
37
  0x2020, 0x00b0, 0x00a2, 0x00a3, 0x00a7, 0x2022, 0x00b6, 0x00df,
38
  0x00ae, 0x00a9, 0x2122, 0x00b4, 0x00a8, 0x2260, 0x00c6, 0x00d8,
39
  0x1e02, 0x00b1, 0x2264, 0x2265, 0x1e03, 0x010a, 0x010b, 0x1e0a,
40
  0x1e0b, 0x1e1e, 0x1e1f, 0x0120, 0x0121, 0x1e40, 0x00e6, 0x00f8,
41
  0x1e41, 0x1e56, 0x1e57, 0x027c, 0x0192, 0x017f, 0x1e60, 0x00ab,
42
  0x00bb, 0x2026, 0x00a0, 0x00c0, 0x00c3, 0x00d5, 0x0152, 0x0153,
43
  0x2013, 0x2014, 0x201c, 0x201d, 0x2018, 0x2019, 0x1e61, 0x1e9b,
44
  0x00ff, 0x0178, 0x1e6a, 0x20ac, 0x2039, 0x203a, 0x0176, 0x0177,
45
  0x1e6b, 0x00b7, 0x1ef2, 0x1ef3, 0x204a, 0x00c2, 0x00ca, 0x00c1,
46
  0x00cb, 0x00c8, 0x00cd, 0x00ce, 0x00cf, 0x00cc, 0x00d3, 0x00d4,
47
  0x2663, 0x00d2, 0x00da, 0x00db, 0x00d9, 0x0131, 0x00dd, 0x00fd,
48
  0x0174, 0x0175, 0x1e84, 0x1e85, 0x1e80, 0x1e81, 0x1e82, 0x1e83
49
};
50
51
/* Unicode to ASCII character lookup tables for the MacGaelic codepage
52
 * Unknown are filled with the ASCII replacement character 0x1a
53
 */
54
const uint8_t libuna_codepage_mac_gaelic_unicode_to_byte_stream_base_0x00a0[ 112 ] = {
55
  0xca, 0x1a, 0xa2, 0xa3, 0x1a, 0x1a, 0x1a, 0xa4,
56
  0xac, 0xa9, 0x1a, 0xc7, 0x1a, 0x1a, 0xa8, 0x1a,
57
  0xa1, 0xb1, 0x1a, 0x1a, 0xab, 0x1a, 0xa6, 0xe1,
58
  0x1a, 0x1a, 0x1a, 0xc8, 0x1a, 0x1a, 0x1a, 0x1a,
59
  0xcb, 0xe7, 0xe5, 0xcc, 0x80, 0x81, 0xae, 0x82,
60
  0xe9, 0x83, 0xe6, 0xe8, 0xed, 0xea, 0xeb, 0xec,
61
  0x1a, 0x84, 0xf1, 0xee, 0xef, 0xcd, 0x85, 0x1a,
62
  0xaf, 0xf4, 0xf2, 0xf3, 0x86, 0xf6, 0x1a, 0xa7,
63
  0x88, 0x87, 0x89, 0x8b, 0x8a, 0x8c, 0xbe, 0x8d,
64
  0x8f, 0x8e, 0x90, 0x91, 0x93, 0x92, 0x94, 0x95,
65
  0x1a, 0x96, 0x98, 0x97, 0x99, 0x9b, 0x9a, 0x1a,
66
  0xbf, 0x9d, 0x9c, 0x9e, 0x9f, 0xf7, 0x1a, 0xd8,
67
  0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a,
68
  0x1a, 0x1a, 0xb5, 0xb6, 0x1a, 0x1a, 0x1a, 0x1a
69
};
70
71
const uint8_t libuna_codepage_mac_gaelic_unicode_to_byte_stream_base_0x2010[ 24 ] = {
72
  0x1a, 0x1a, 0x1a, 0xd0, 0xd1, 0x1a, 0x1a, 0x1a,
73
  0xd4, 0xd5, 0x1a, 0x1a, 0xd2, 0xd3, 0x1a, 0x1a,
74
  0xa0, 0x1a, 0xa5, 0x1a, 0x1a, 0x1a, 0xc9, 0x1a
75
};
76
77
/* Copies an Unicode character from a MacGaelic encoded byte stream
78
 * Returns 1 if successful or -1 on error
79
 */
80
int libuna_codepage_mac_gaelic_copy_from_byte_stream(
81
     libuna_unicode_character_t *unicode_character,
82
     const uint8_t *byte_stream,
83
     size_t byte_stream_size,
84
     size_t *byte_stream_index,
85
     libcerror_error_t **error )
86
0
{
87
0
  static char *function                             = "libuna_codepage_mac_gaelic_copy_from_byte_stream";
88
0
  libuna_unicode_character_t safe_unicode_character = 0xfffd;
89
0
  size_t safe_byte_stream_index                     = 0;
90
0
  uint8_t byte_stream_character                     = 0;
91
92
0
  if( unicode_character == NULL )
93
0
  {
94
0
    libcerror_error_set(
95
0
     error,
96
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
97
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
98
0
     "%s: invalid Unicode character.",
99
0
     function );
100
101
0
    return( -1 );
102
0
  }
103
0
  if( byte_stream == NULL )
104
0
  {
105
0
    libcerror_error_set(
106
0
     error,
107
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
108
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
109
0
     "%s: invalid byte stream.",
110
0
     function );
111
112
0
    return( -1 );
113
0
  }
114
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
115
0
  {
116
0
    libcerror_error_set(
117
0
     error,
118
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
119
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
120
0
     "%s: invalid byte stream size value exceeds maximum.",
121
0
     function );
122
123
0
    return( -1 );
124
0
  }
125
0
  if( byte_stream_index == NULL )
126
0
  {
127
0
    libcerror_error_set(
128
0
     error,
129
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
130
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
131
0
     "%s: invalid byte stream index.",
132
0
     function );
133
134
0
    return( -1 );
135
0
  }
136
0
  safe_byte_stream_index = *byte_stream_index;
137
138
0
  if( safe_byte_stream_index >= byte_stream_size )
139
0
  {
140
0
    libcerror_error_set(
141
0
     error,
142
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
143
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
144
0
     "%s: byte stream too small.",
145
0
     function );
146
147
0
    return( -1 );
148
0
  }
149
0
  byte_stream_character = byte_stream[ safe_byte_stream_index++ ];
150
151
0
  if( byte_stream_character < 0x80 )
152
0
  {
153
0
    safe_unicode_character = byte_stream_character;
154
0
  }
155
0
  else
156
0
  {
157
0
    byte_stream_character -= 0x80;
158
159
0
    safe_unicode_character = libuna_codepage_mac_gaelic_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
160
0
  }
161
0
  *unicode_character = safe_unicode_character;
162
0
  *byte_stream_index = safe_byte_stream_index;
163
164
0
  return( 1 );
165
0
}
166
167
/* Copies an Unicode character to a MacGaelic encoded byte stream
168
 * Returns 1 if successful or -1 on error
169
 */
170
int libuna_codepage_mac_gaelic_copy_to_byte_stream(
171
     libuna_unicode_character_t unicode_character,
172
     uint8_t *byte_stream,
173
     size_t byte_stream_size,
174
     size_t *byte_stream_index,
175
     libcerror_error_t **error )
176
0
{
177
0
  static char *function         = "libuna_codepage_mac_gaelic_copy_to_byte_stream";
178
0
  size_t safe_byte_stream_index = 0;
179
0
  uint16_t byte_stream_value    = 0x001a;
180
181
0
  if( byte_stream == NULL )
182
0
  {
183
0
    libcerror_error_set(
184
0
     error,
185
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
186
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
187
0
     "%s: invalid byte stream.",
188
0
     function );
189
190
0
    return( -1 );
191
0
  }
192
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
193
0
  {
194
0
    libcerror_error_set(
195
0
     error,
196
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
197
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
198
0
     "%s: invalid byte stream size value exceeds maximum.",
199
0
     function );
200
201
0
    return( -1 );
202
0
  }
203
0
  if( byte_stream_index == NULL )
204
0
  {
205
0
    libcerror_error_set(
206
0
     error,
207
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
208
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
209
0
     "%s: invalid byte stream index.",
210
0
     function );
211
212
0
    return( -1 );
213
0
  }
214
0
  safe_byte_stream_index = *byte_stream_index;
215
216
0
  if( safe_byte_stream_index >= byte_stream_size )
217
0
  {
218
0
    libcerror_error_set(
219
0
     error,
220
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
221
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
222
0
     "%s: byte stream too small.",
223
0
     function );
224
225
0
    return( -1 );
226
0
  }
227
0
  if( unicode_character < 0x0080 )
228
0
  {
229
0
    byte_stream_value = (uint16_t) unicode_character;
230
0
  }
231
0
  else if( ( unicode_character >= 0x00a0 )
232
0
        && ( unicode_character < 0x0110 ) )
233
0
  {
234
0
    unicode_character -= 0x00a0;
235
236
0
    byte_stream_value = libuna_codepage_mac_gaelic_unicode_to_byte_stream_base_0x00a0[ unicode_character ];
237
0
  }
238
0
  else if( ( unicode_character >= 0x2010 )
239
0
        && ( unicode_character < 0x2028 ) )
240
0
  {
241
0
    unicode_character -= 0x2010;
242
243
0
    byte_stream_value = libuna_codepage_mac_gaelic_unicode_to_byte_stream_base_0x2010[ unicode_character ];
244
0
  }
245
0
  else switch( unicode_character )
246
0
  {
247
0
    case 0x0120:
248
0
      byte_stream_value = 0xbb;
249
0
      break;
250
251
0
    case 0x0121:
252
0
      byte_stream_value = 0xbc;
253
0
      break;
254
255
0
    case 0x0131:
256
0
      byte_stream_value = 0xf5;
257
0
      break;
258
259
0
    case 0x0152:
260
0
      byte_stream_value = 0xce;
261
0
      break;
262
263
0
    case 0x0153:
264
0
      byte_stream_value = 0xcf;
265
0
      break;
266
267
0
    case 0x0174:
268
0
      byte_stream_value = 0xf8;
269
0
      break;
270
271
0
    case 0x0175:
272
0
      byte_stream_value = 0xf9;
273
0
      break;
274
275
0
    case 0x0176:
276
0
      byte_stream_value = 0xde;
277
0
      break;
278
279
0
    case 0x0177:
280
0
      byte_stream_value = 0xdf;
281
0
      break;
282
283
0
    case 0x0178:
284
0
      byte_stream_value = 0xd9;
285
0
      break;
286
287
0
    case 0x017f:
288
0
      byte_stream_value = 0xc5;
289
0
      break;
290
291
0
    case 0x0192:
292
0
      byte_stream_value = 0xc4;
293
0
      break;
294
295
0
    case 0x027c:
296
0
      byte_stream_value = 0xc3;
297
0
      break;
298
299
0
    case 0x1e02:
300
0
      byte_stream_value = 0xb0;
301
0
      break;
302
303
0
    case 0x1e03:
304
0
      byte_stream_value = 0xb4;
305
0
      break;
306
307
0
    case 0x1e0a:
308
0
      byte_stream_value = 0xb7;
309
0
      break;
310
311
0
    case 0x1e0b:
312
0
      byte_stream_value = 0xb8;
313
0
      break;
314
315
0
    case 0x1e1e:
316
0
      byte_stream_value = 0xb9;
317
0
      break;
318
319
0
    case 0x1e1f:
320
0
      byte_stream_value = 0xba;
321
0
      break;
322
323
0
    case 0x1e40:
324
0
      byte_stream_value = 0xbd;
325
0
      break;
326
327
0
    case 0x1e41:
328
0
      byte_stream_value = 0xc0;
329
0
      break;
330
331
0
    case 0x1e56:
332
0
      byte_stream_value = 0xc1;
333
0
      break;
334
335
0
    case 0x1e57:
336
0
      byte_stream_value = 0xc2;
337
0
      break;
338
339
0
    case 0x1e60:
340
0
      byte_stream_value = 0xc6;
341
0
      break;
342
343
0
    case 0x1e61:
344
0
      byte_stream_value = 0xd6;
345
0
      break;
346
347
0
    case 0x1e6a:
348
0
      byte_stream_value = 0xda;
349
0
      break;
350
351
0
    case 0x1e6b:
352
0
      byte_stream_value = 0xe0;
353
0
      break;
354
355
0
    case 0x1e80:
356
0
      byte_stream_value = 0xfc;
357
0
      break;
358
359
0
    case 0x1e81:
360
0
      byte_stream_value = 0xfd;
361
0
      break;
362
363
0
    case 0x1e82:
364
0
      byte_stream_value = 0xfe;
365
0
      break;
366
367
0
    case 0x1e83:
368
0
      byte_stream_value = 0xff;
369
0
      break;
370
371
0
    case 0x1e84:
372
0
      byte_stream_value = 0xfa;
373
0
      break;
374
375
0
    case 0x1e85:
376
0
      byte_stream_value = 0xfb;
377
0
      break;
378
379
0
    case 0x1e9b:
380
0
      byte_stream_value = 0xd7;
381
0
      break;
382
383
0
    case 0x1ef2:
384
0
      byte_stream_value = 0xe2;
385
0
      break;
386
387
0
    case 0x1ef3:
388
0
      byte_stream_value = 0xe3;
389
0
      break;
390
391
0
    case 0x2039:
392
0
      byte_stream_value = 0xdc;
393
0
      break;
394
395
0
    case 0x203a:
396
0
      byte_stream_value = 0xdd;
397
0
      break;
398
399
0
    case 0x204a:
400
0
      byte_stream_value = 0xe4;
401
0
      break;
402
403
0
    case 0x20ac:
404
0
      byte_stream_value = 0xdb;
405
0
      break;
406
407
0
    case 0x2122:
408
0
      byte_stream_value = 0xaa;
409
0
      break;
410
411
0
    case 0x2260:
412
0
      byte_stream_value = 0xad;
413
0
      break;
414
415
0
    case 0x2264:
416
0
      byte_stream_value = 0xb2;
417
0
      break;
418
419
0
    case 0x2265:
420
0
      byte_stream_value = 0xb3;
421
0
      break;
422
423
0
    case 0x2663:
424
0
      byte_stream_value = 0xf0;
425
0
      break;
426
427
0
    default:
428
0
      byte_stream_value = 0x1a;
429
0
      break;
430
0
  }
431
0
  byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );
432
433
0
  *byte_stream_index = safe_byte_stream_index;
434
435
0
  return( 1 );
436
0
}
437