Coverage Report

Created: 2024-02-25 07:20

/src/libfmapi/libuna/libuna_codepage_windows_1253.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * Windows 1253 codepage (Greek) 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_windows_1253.h"
26
#include "libuna_libcerror.h"
27
#include "libuna_types.h"
28
29
/* Extended ASCII to Unicode character lookup table for the Windows 1253 codepage
30
 * Unknown are filled with the Unicode replacement character 0xfffd
31
 */
32
const uint16_t libuna_codepage_windows_1253_byte_stream_to_unicode_base_0x80[ 128 ] = {
33
  0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
34
  0xfffd, 0x2030, 0xfffd, 0x2039, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
35
  0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
36
  0xfffd, 0x2122, 0xfffd, 0x203a, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
37
  0x00a0, 0x0385, 0x0386, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
38
  0x00a8, 0x00a9, 0xfffd, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x2015,
39
  0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x0384, 0x00b5, 0x00b6, 0x00b7,
40
  0x0388, 0x0389, 0x038a, 0x00bb, 0x038c, 0x00bd, 0x038e, 0x038f,
41
  0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
42
  0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, 0x039e, 0x039f,
43
  0x03a0, 0x03a1, 0xfffd, 0x03a3, 0x03a4, 0x03a5, 0x03a6, 0x03a7,
44
  0x03a8, 0x03a9, 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03ae, 0x03af,
45
  0x03b0, 0x03b1, 0x03b2, 0x03b3, 0x03b4, 0x03b5, 0x03b6, 0x03b7,
46
  0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03be, 0x03bf,
47
  0x03c0, 0x03c1, 0x03c2, 0x03c3, 0x03c4, 0x03c5, 0x03c6, 0x03c7,
48
  0x03c8, 0x03c9, 0x03ca, 0x03cb, 0x03cc, 0x03cd, 0x03ce, 0xfffd
49
};
50
51
/* Unicode to ASCII character lookup tables for the Windows 1253 codepage
52
 * Unknown are filled with the ASCII replacement character 0x1a
53
 */
54
const uint8_t libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x00a0[ 32 ] = {
55
  0xa0, 0x1a, 0x1a, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
56
  0xa8, 0xa9, 0x1a, 0xab, 0xac, 0xad, 0xae, 0x1a,
57
  0xb0, 0xb1, 0xb2, 0xb3, 0x1a, 0xb5, 0xb6, 0xb7,
58
  0x1a, 0x1a, 0x1a, 0xbb, 0x1a, 0xbd, 0x1a, 0x1a,
59
};
60
61
const uint8_t libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x0380[ 80 ] = {
62
  0x1a, 0x1a, 0x1a, 0x1a, 0xb4, 0xa1, 0xa2, 0x1a,
63
  0xb8, 0xb9, 0xba, 0x1a, 0xbc, 0x1a, 0xbe, 0xbf,
64
  0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
65
  0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
66
  0xd0, 0xd1, 0x1a, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
67
  0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
68
  0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
69
  0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
70
  0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
71
  0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0x1a,
72
};
73
74
const uint8_t libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x2010[ 24 ] = {
75
  0x1a, 0x1a, 0x1a, 0x96, 0x97, 0xaf, 0x1a, 0x1a,
76
  0x91, 0x92, 0x82, 0x1a, 0x93, 0x94, 0x84, 0x1a,
77
  0x86, 0x87, 0x95, 0x1a, 0x1a, 0x1a, 0x85, 0x1a
78
};
79
80
/* Copies an Unicode character from a Windows 1253 encoded byte stream
81
 * Returns 1 if successful or -1 on error
82
 */
83
int libuna_codepage_windows_1253_copy_from_byte_stream(
84
     libuna_unicode_character_t *unicode_character,
85
     const uint8_t *byte_stream,
86
     size_t byte_stream_size,
87
     size_t *byte_stream_index,
88
     libcerror_error_t **error )
89
0
{
90
0
  static char *function                             = "libuna_codepage_windows_1253_copy_from_byte_stream";
91
0
  libuna_unicode_character_t safe_unicode_character = 0xfffd;
92
0
  size_t safe_byte_stream_index                     = 0;
93
0
  uint8_t byte_stream_character                     = 0;
94
95
0
  if( unicode_character == NULL )
96
0
  {
97
0
    libcerror_error_set(
98
0
     error,
99
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
100
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
101
0
     "%s: invalid Unicode character.",
102
0
     function );
103
104
0
    return( -1 );
105
0
  }
106
0
  if( byte_stream == NULL )
107
0
  {
108
0
    libcerror_error_set(
109
0
     error,
110
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
111
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
112
0
     "%s: invalid byte stream.",
113
0
     function );
114
115
0
    return( -1 );
116
0
  }
117
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
118
0
  {
119
0
    libcerror_error_set(
120
0
     error,
121
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
122
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
123
0
     "%s: invalid byte stream size value exceeds maximum.",
124
0
     function );
125
126
0
    return( -1 );
127
0
  }
128
0
  if( byte_stream_index == NULL )
129
0
  {
130
0
    libcerror_error_set(
131
0
     error,
132
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
133
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
134
0
     "%s: invalid byte stream index.",
135
0
     function );
136
137
0
    return( -1 );
138
0
  }
139
0
  safe_byte_stream_index = *byte_stream_index;
140
141
0
  if( safe_byte_stream_index >= byte_stream_size )
142
0
  {
143
0
    libcerror_error_set(
144
0
     error,
145
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
146
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
147
0
     "%s: byte stream too small.",
148
0
     function );
149
150
0
    return( -1 );
151
0
  }
152
0
  byte_stream_character = byte_stream[ safe_byte_stream_index++ ];
153
154
0
  if( byte_stream_character < 0x80 )
155
0
  {
156
0
    safe_unicode_character = byte_stream_character;
157
0
  }
158
0
  else
159
0
  {
160
0
    byte_stream_character -= 0x80;
161
162
0
    safe_unicode_character = libuna_codepage_windows_1253_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
163
0
  }
164
0
  *unicode_character = safe_unicode_character;
165
0
  *byte_stream_index = safe_byte_stream_index;
166
167
0
  return( 1 );
168
0
}
169
170
/* Copies an Unicode character to a Windows 1253 encoded byte stream
171
 * Returns 1 if successful or -1 on error
172
 */
173
int libuna_codepage_windows_1253_copy_to_byte_stream(
174
     libuna_unicode_character_t unicode_character,
175
     uint8_t *byte_stream,
176
     size_t byte_stream_size,
177
     size_t *byte_stream_index,
178
     libcerror_error_t **error )
179
0
{
180
0
  static char *function         = "libuna_codepage_windows_1253_copy_to_byte_stream";
181
0
  size_t safe_byte_stream_index = 0;
182
0
  uint16_t byte_stream_value    = 0x001a;
183
184
0
  if( byte_stream == NULL )
185
0
  {
186
0
    libcerror_error_set(
187
0
     error,
188
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
189
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
190
0
     "%s: invalid byte stream.",
191
0
     function );
192
193
0
    return( -1 );
194
0
  }
195
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
196
0
  {
197
0
    libcerror_error_set(
198
0
     error,
199
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
200
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
201
0
     "%s: invalid byte stream size value exceeds maximum.",
202
0
     function );
203
204
0
    return( -1 );
205
0
  }
206
0
  if( byte_stream_index == NULL )
207
0
  {
208
0
    libcerror_error_set(
209
0
     error,
210
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
211
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
212
0
     "%s: invalid byte stream index.",
213
0
     function );
214
215
0
    return( -1 );
216
0
  }
217
0
  safe_byte_stream_index = *byte_stream_index;
218
219
0
  if( safe_byte_stream_index >= byte_stream_size )
220
0
  {
221
0
    libcerror_error_set(
222
0
     error,
223
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
224
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
225
0
     "%s: byte stream too small.",
226
0
     function );
227
228
0
    return( -1 );
229
0
  }
230
0
  if( unicode_character < 0x0080 )
231
0
  {
232
0
    byte_stream_value = (uint16_t) unicode_character;
233
0
  }
234
0
  else if( ( unicode_character >= 0x00a0 )
235
0
        && ( unicode_character < 0x00c0 ) )
236
0
  {
237
0
    unicode_character -= 0x00a0;
238
239
0
    byte_stream_value = libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x00a0[ unicode_character ];
240
0
  }
241
0
  else if( ( unicode_character >= 0x0380 )
242
0
        && ( unicode_character < 0x03d0 ) )
243
0
  {
244
0
    unicode_character -= 0x0380;
245
246
0
    byte_stream_value = libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x0380[ unicode_character ];
247
0
  }
248
0
  else if( ( unicode_character >= 0x2010 )
249
0
        && ( unicode_character < 0x2028 ) )
250
0
  {
251
0
    unicode_character -= 0x2010;
252
253
0
    byte_stream_value = libuna_codepage_windows_1253_unicode_to_byte_stream_base_0x2010[ unicode_character ];
254
0
  }
255
0
  else switch( unicode_character )
256
0
  {
257
0
    case 0x0192:
258
0
      byte_stream_value = 0x83;
259
0
      break;
260
261
0
    case 0x2030:
262
0
      byte_stream_value = 0x89;
263
0
      break;
264
265
0
    case 0x2039:
266
0
      byte_stream_value = 0x8b;
267
0
      break;
268
269
0
    case 0x203a:
270
0
      byte_stream_value = 0x9b;
271
0
      break;
272
273
0
    case 0x20ac:
274
0
      byte_stream_value = 0x80;
275
0
      break;
276
277
0
    case 0x2122:
278
0
      byte_stream_value = 0x99;
279
0
      break;
280
281
0
    default:
282
0
      byte_stream_value = 0x1a;
283
0
      break;
284
0
  }
285
0
  byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );
286
287
0
  *byte_stream_index = safe_byte_stream_index;
288
289
0
  return( 1 );
290
0
}
291