/src/libfsfat/libuna/libuna_codepage_windows_1252.c

Source (jump to first uncovered line)
/*
 * Windows 1252 codepage (Western European/Latin 1) functions
 *
 * Copyright (C) 2008-2024, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <common.h>
#include <types.h>

#include "libuna_codepage_windows_1252.h"
#include "libuna_libcerror.h"
#include "libuna_types.h"

/* Extended ASCII to Unicode character lookup table for the Windows 1252 codepage
 * Unknown are filled with the Unicode replacement character 0xfffd
 */
const uint16_t libuna_codepage_windows_1252_byte_stream_to_unicode_base_0x80[ 32 ] = {
  0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
  0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
  0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178
};

/* Unicode to ASCII character lookup tables for the Windows 1252 codepage
 * Unknown are filled with the ASCII replacement character 0x1a
 */
const uint8_t libuna_codepage_windows_1252_unicode_to_byte_stream_base_0x2010[ 24 ] = {
  0x1a, 0x1a, 0x1a, 0x96, 0x97, 0x1a, 0x1a, 0x1a,
  0x91, 0x92, 0x82, 0x1a, 0x93, 0x94, 0x84, 0x1a,
  0x86, 0x87, 0x95, 0x1a, 0x1a, 0x1a, 0x85, 0x1a
};

/* Copies an Unicode character from a Windows 1252 encoded byte stream
 * Returns 1 if successful or -1 on error
 */
int libuna_codepage_windows_1252_copy_from_byte_stream(
     libuna_unicode_character_t *unicode_character,
     const uint8_t *byte_stream,
     size_t byte_stream_size,
     size_t *byte_stream_index,
     libcerror_error_t **error )
{
  static char *function                             = "libuna_codepage_windows_1252_copy_from_byte_stream";
  libuna_unicode_character_t safe_unicode_character = 0xfffd;
  size_t safe_byte_stream_index                     = 0;
  uint8_t byte_stream_character                     = 0;

  if( unicode_character == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid Unicode character.",
     function );

    return( -1 );
  }
  if( byte_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid byte stream.",
     function );

    return( -1 );
  }
  if( byte_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid byte stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( byte_stream_index == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid byte stream index.",
     function );

    return( -1 );
  }
  safe_byte_stream_index = *byte_stream_index;

  if( safe_byte_stream_index >= byte_stream_size )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
     "%s: byte stream too small.",
     function );

    return( -1 );
  }
  byte_stream_character = byte_stream[ safe_byte_stream_index++ ];

  if( ( byte_stream_character < 0x80 )
   || ( byte_stream_character >= 0xa0 ) )
  {
    safe_unicode_character = byte_stream_character;
  }
  else
  {
    byte_stream_character -= 0x80;

    safe_unicode_character = libuna_codepage_windows_1252_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
  }
  *unicode_character = safe_unicode_character;
  *byte_stream_index = safe_byte_stream_index;

  return( 1 );
}

/* Copies an Unicode character to a Windows 1252 encoded byte stream
 * Returns 1 if successful or -1 on error
 */
int libuna_codepage_windows_1252_copy_to_byte_stream(
     libuna_unicode_character_t unicode_character,
     uint8_t *byte_stream,
     size_t byte_stream_size,
     size_t *byte_stream_index,
     libcerror_error_t **error )
{
  static char *function         = "libuna_codepage_windows_1252_copy_to_byte_stream";
  size_t safe_byte_stream_index = 0;
  uint16_t byte_stream_value    = 0x001a;

  if( byte_stream == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid byte stream.",
     function );

    return( -1 );
  }
  if( byte_stream_size > (size_t) SSIZE_MAX )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
     "%s: invalid byte stream size value exceeds maximum.",
     function );

    return( -1 );
  }
  if( byte_stream_index == NULL )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
     "%s: invalid byte stream index.",
     function );

    return( -1 );
  }
  safe_byte_stream_index = *byte_stream_index;

  if( safe_byte_stream_index >= byte_stream_size )
  {
    libcerror_error_set(
     error,
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
     "%s: byte stream too small.",
     function );

    return( -1 );
  }
  if( unicode_character < 0x0080 )
  {
    byte_stream_value = (uint16_t) unicode_character;
  }
  else if( ( unicode_character >= 0x00a0 )
        && ( unicode_character < 0x0100 ) )
  {
    byte_stream_value = (uint16_t) unicode_character;
  }
  else if( ( unicode_character >= 0x2010 )
        && ( unicode_character < 0x2028 ) )
  {
    unicode_character -= 0x2010;

    byte_stream_value = libuna_codepage_windows_1252_unicode_to_byte_stream_base_0x2010[ unicode_character ];
  }
  else switch( unicode_character )
  {
    case 0x0152:
      byte_stream_value = 0x8c;
      break;

    case 0x0153:
      byte_stream_value = 0x9c;
      break;

    case 0x0160:
      byte_stream_value = 0x8a;
      break;

    case 0x0161:
      byte_stream_value = 0x9a;
      break;

    case 0x0178:
      byte_stream_value = 0x9f;
      break;

    case 0x017d:
      byte_stream_value = 0x8e;
      break;

    case 0x017e:
      byte_stream_value = 0x9e;
      break;

    case 0x0192:
      byte_stream_value = 0x83;
      break;

    case 0x02c6:
      byte_stream_value = 0x88;
      break;

    case 0x02dc:
      byte_stream_value = 0x98;
      break;

    case 0x2030:
      byte_stream_value = 0x89;
      break;

    case 0x2039:
      byte_stream_value = 0x8b;
      break;

    case 0x203a:
      byte_stream_value = 0x9b;
      break;

    case 0x20ac:
      byte_stream_value = 0x80;
      break;

    case 0x2122:
      byte_stream_value = 0x99;
      break;

    default:
      byte_stream_value = 0x1a;
      break;
  }
  byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );

  *byte_stream_index = safe_byte_stream_index;

  return( 1 );
}


Coverage Report

Created: 2024-02-25 07:20

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Windows 1252 codepage (Western European/Latin 1) 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_1252.h"
26		#include "libuna_libcerror.h"
27		#include "libuna_types.h"
28
29		/* Extended ASCII to Unicode character lookup table for the Windows 1252 codepage
30		* Unknown are filled with the Unicode replacement character 0xfffd
31		*/
32		const uint16_t libuna_codepage_windows_1252_byte_stream_to_unicode_base_0x80[ 32 ] = {
33		0x20ac, 0xfffd, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
34		0x02c6, 0x2030, 0x0160, 0x2039, 0x0152, 0xfffd, 0x017d, 0xfffd,
35		0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
36		0x02dc, 0x2122, 0x0161, 0x203a, 0x0153, 0xfffd, 0x017e, 0x0178
37		};
38
39		/* Unicode to ASCII character lookup tables for the Windows 1252 codepage
40		* Unknown are filled with the ASCII replacement character 0x1a
41		*/
42		const uint8_t libuna_codepage_windows_1252_unicode_to_byte_stream_base_0x2010[ 24 ] = {
43		0x1a, 0x1a, 0x1a, 0x96, 0x97, 0x1a, 0x1a, 0x1a,
44		0x91, 0x92, 0x82, 0x1a, 0x93, 0x94, 0x84, 0x1a,
45		0x86, 0x87, 0x95, 0x1a, 0x1a, 0x1a, 0x85, 0x1a
46		};
47
48		/* Copies an Unicode character from a Windows 1252 encoded byte stream
49		* Returns 1 if successful or -1 on error
50		*/
51		int libuna_codepage_windows_1252_copy_from_byte_stream(
52		libuna_unicode_character_t *unicode_character,
53		const uint8_t *byte_stream,
54		size_t byte_stream_size,
55		size_t *byte_stream_index,
56		libcerror_error_t **error )
57	90.1k	{
58	90.1k	static char *function = "libuna_codepage_windows_1252_copy_from_byte_stream";
59	90.1k	libuna_unicode_character_t safe_unicode_character = 0xfffd;
60	90.1k	size_t safe_byte_stream_index = 0;
61	90.1k	uint8_t byte_stream_character = 0;
62
63	90.1k	if( unicode_character == NULL )
64	0	{
65	0	libcerror_error_set(
66	0	error,
67	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
68	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
69	0	"%s: invalid Unicode character.",
70	0	function );
71
72	0	return( -1 );
73	0	}
74	90.1k	if( byte_stream == NULL )
75	0	{
76	0	libcerror_error_set(
77	0	error,
78	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
79	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
80	0	"%s: invalid byte stream.",
81	0	function );
82
83	0	return( -1 );
84	0	}
85	90.1k	if( byte_stream_size > (size_t) SSIZE_MAX )
86	0	{
87	0	libcerror_error_set(
88	0	error,
89	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
90	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
91	0	"%s: invalid byte stream size value exceeds maximum.",
92	0	function );
93
94	0	return( -1 );
95	0	}
96	90.1k	if( byte_stream_index == NULL )
97	0	{
98	0	libcerror_error_set(
99	0	error,
100	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
101	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
102	0	"%s: invalid byte stream index.",
103	0	function );
104
105	0	return( -1 );
106	0	}
107	90.1k	safe_byte_stream_index = *byte_stream_index;
108
109	90.1k	if( safe_byte_stream_index >= byte_stream_size )
110	0	{
111	0	libcerror_error_set(
112	0	error,
113	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
114	0	LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
115	0	"%s: byte stream too small.",
116	0	function );
117
118	0	return( -1 );
119	0	}
120	90.1k	byte_stream_character = byte_stream[ safe_byte_stream_index++ ];
121
122	90.1k	if( ( byte_stream_character < 0x80 )
123	90.1k	\|\| ( byte_stream_character >= 0xa0 ) )
124	86.6k	{
125	86.6k	safe_unicode_character = byte_stream_character;
126	86.6k	}
127	3.48k	else
128	3.48k	{
129	3.48k	byte_stream_character -= 0x80;
130
131	3.48k	safe_unicode_character = libuna_codepage_windows_1252_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
132	3.48k	}
133	90.1k	*unicode_character = safe_unicode_character;
134	90.1k	*byte_stream_index = safe_byte_stream_index;
135
136	90.1k	return( 1 );
137	90.1k	}
138
139		/* Copies an Unicode character to a Windows 1252 encoded byte stream
140		* Returns 1 if successful or -1 on error
141		*/
142		int libuna_codepage_windows_1252_copy_to_byte_stream(
143		libuna_unicode_character_t unicode_character,
144		uint8_t *byte_stream,
145		size_t byte_stream_size,
146		size_t *byte_stream_index,
147		libcerror_error_t **error )
148	0	{
149	0	static char *function = "libuna_codepage_windows_1252_copy_to_byte_stream";
150	0	size_t safe_byte_stream_index = 0;
151	0	uint16_t byte_stream_value = 0x001a;
152
153	0	if( byte_stream == NULL )
154	0	{
155	0	libcerror_error_set(
156	0	error,
157	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
158	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
159	0	"%s: invalid byte stream.",
160	0	function );
161
162	0	return( -1 );
163	0	}
164	0	if( byte_stream_size > (size_t) SSIZE_MAX )
165	0	{
166	0	libcerror_error_set(
167	0	error,
168	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
169	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
170	0	"%s: invalid byte stream size value exceeds maximum.",
171	0	function );
172
173	0	return( -1 );
174	0	}
175	0	if( byte_stream_index == NULL )
176	0	{
177	0	libcerror_error_set(
178	0	error,
179	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
180	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
181	0	"%s: invalid byte stream index.",
182	0	function );
183
184	0	return( -1 );
185	0	}
186	0	safe_byte_stream_index = *byte_stream_index;
187
188	0	if( safe_byte_stream_index >= byte_stream_size )
189	0	{
190	0	libcerror_error_set(
191	0	error,
192	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
193	0	LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
194	0	"%s: byte stream too small.",
195	0	function );
196
197	0	return( -1 );
198	0	}
199	0	if( unicode_character < 0x0080 )
200	0	{
201	0	byte_stream_value = (uint16_t) unicode_character;
202	0	}
203	0	else if( ( unicode_character >= 0x00a0 )
204	0	&& ( unicode_character < 0x0100 ) )
205	0	{
206	0	byte_stream_value = (uint16_t) unicode_character;
207	0	}
208	0	else if( ( unicode_character >= 0x2010 )
209	0	&& ( unicode_character < 0x2028 ) )
210	0	{
211	0	unicode_character -= 0x2010;
212
213	0	byte_stream_value = libuna_codepage_windows_1252_unicode_to_byte_stream_base_0x2010[ unicode_character ];
214	0	}
215	0	else switch( unicode_character )
216	0	{
217	0	case 0x0152:
218	0	byte_stream_value = 0x8c;
219	0	break;
220
221	0	case 0x0153:
222	0	byte_stream_value = 0x9c;
223	0	break;
224
225	0	case 0x0160:
226	0	byte_stream_value = 0x8a;
227	0	break;
228
229	0	case 0x0161:
230	0	byte_stream_value = 0x9a;
231	0	break;
232
233	0	case 0x0178:
234	0	byte_stream_value = 0x9f;
235	0	break;
236
237	0	case 0x017d:
238	0	byte_stream_value = 0x8e;
239	0	break;
240
241	0	case 0x017e:
242	0	byte_stream_value = 0x9e;
243	0	break;
244
245	0	case 0x0192:
246	0	byte_stream_value = 0x83;
247	0	break;
248
249	0	case 0x02c6:
250	0	byte_stream_value = 0x88;
251	0	break;
252
253	0	case 0x02dc:
254	0	byte_stream_value = 0x98;
255	0	break;
256
257	0	case 0x2030:
258	0	byte_stream_value = 0x89;
259	0	break;
260
261	0	case 0x2039:
262	0	byte_stream_value = 0x8b;
263	0	break;
264
265	0	case 0x203a:
266	0	byte_stream_value = 0x9b;
267	0	break;
268
269	0	case 0x20ac:
270	0	byte_stream_value = 0x80;
271	0	break;
272
273	0	case 0x2122:
274	0	byte_stream_value = 0x99;
275	0	break;
276
277	0	default:
278	0	byte_stream_value = 0x1a;
279	0	break;
280	0	}
281	0	byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );
282
283	0	*byte_stream_index = safe_byte_stream_index;
284
285	0	return( 1 );
286	0	}
287