/src/libvhdi/libuna/libuna_codepage_windows_874.c

Source (jump to first uncovered line)
/*
 * Windows 874 codepage (Thai) 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_874.h"
#include "libuna_libcerror.h"
#include "libuna_types.h"

/* Extended ASCII to Unicode character lookup table for the Windows 874 codepage
 * Unknown are filled with the Unicode replacement character 0xfffd
 */
const uint16_t libuna_codepage_windows_874_byte_stream_to_unicode_base_0x80[ 128 ] = {
  0x20ac, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0x2026, 0xfffd, 0xfffd,
  0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
  0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
  0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
  0x00a0, 0x0e01, 0x0e02, 0x0e03, 0x0e04, 0x0e05, 0x0e06, 0x0e07,
  0x0e08, 0x0e09, 0x0e0a, 0x0e0b, 0x0e0c, 0x0e0d, 0x0e0e, 0x0e0f,
  0x0e10, 0x0e11, 0x0e12, 0x0e13, 0x0e14, 0x0e15, 0x0e16, 0x0e17,
  0x0e18, 0x0e19, 0x0e1a, 0x0e1b, 0x0e1c, 0x0e1d, 0x0e1e, 0x0e1f,
  0x0e20, 0x0e21, 0x0e22, 0x0e23, 0x0e24, 0x0e25, 0x0e26, 0x0e27,
  0x0e28, 0x0e29, 0x0e2a, 0x0e2b, 0x0e2c, 0x0e2d, 0x0e2e, 0x0e2f,
  0x0e30, 0x0e31, 0x0e32, 0x0e33, 0x0e34, 0x0e35, 0x0e36, 0x0e37,
  0x0e38, 0x0e39, 0x0e3a, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0x0e3f,
  0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47,
  0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0x0e4e, 0x0e4f,
  0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57,
  0x0e58, 0x0e59, 0x0e5a, 0x0e5b, 0xfffd, 0xfffd, 0xfffd, 0xfffd
};

/* Unicode to ASCII character lookup tables for the Windows 874 codepage
 * Unknown are filled with the ASCII replacement character 0x1a
 */
const uint8_t libuna_codepage_windows_874_unicode_to_byte_stream_base_0x0e00[ 96 ] = {
  0x1a, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
  0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
  0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
  0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
  0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
  0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
  0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
  0xd8, 0xd9, 0xda, 0x1a, 0x1a, 0x1a, 0x1a, 0xdf,
  0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
  0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
  0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
  0xf8, 0xf9, 0xfa, 0xfb, 0x1a, 0x1a, 0x1a, 0x1a
};

const uint8_t libuna_codepage_windows_874_unicode_to_byte_stream_base_0x2018[ 8 ] = {
  0x91, 0x92, 0x1a, 0x1a, 0x93, 0x94, 0x1a, 0x1a
};

/* Copies an Unicode character from a Windows 874 encoded byte stream
 * Returns 1 if successful or -1 on error
 */
int libuna_codepage_windows_874_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_874_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 )
  {
    safe_unicode_character = byte_stream_character;
  }
  else
  {
    byte_stream_character -= 0x80;

    safe_unicode_character = libuna_codepage_windows_874_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 874 encoded byte stream
 * Returns 1 if successful or -1 on error
 */
int libuna_codepage_windows_874_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_874_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 )
   || ( unicode_character == 0x00a0 ) )
  {
    byte_stream_value = (uint16_t) unicode_character;
  }
  else if( ( unicode_character >= 0x0e00 )
        && ( unicode_character < 0x0e60 ) )
  {
    unicode_character -= 0x0e00;

    byte_stream_value = libuna_codepage_windows_874_unicode_to_byte_stream_base_0x0e00[ unicode_character ];
  }
  else if( ( unicode_character >= 0x2018 )
        && ( unicode_character < 0x2020 ) )
  {
    unicode_character -= 0x2018;

    byte_stream_value = libuna_codepage_windows_874_unicode_to_byte_stream_base_0x2018[ unicode_character ];
  }
  else switch( unicode_character )
  {
    case 0x2013:
      byte_stream_value = 0x96;
      break;

    case 0x2014:
      byte_stream_value = 0x97;
      break;

    case 0x2022:
      byte_stream_value = 0x95;
      break;

    case 0x2026:
      byte_stream_value = 0x85;
      break;

    case 0x20ac:
      byte_stream_value = 0x80;
      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 874 codepage (Thai) 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_874.h"
26		#include "libuna_libcerror.h"
27		#include "libuna_types.h"
28
29		/* Extended ASCII to Unicode character lookup table for the Windows 874 codepage
30		* Unknown are filled with the Unicode replacement character 0xfffd
31		*/
32		const uint16_t libuna_codepage_windows_874_byte_stream_to_unicode_base_0x80[ 128 ] = {
33		0x20ac, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0x2026, 0xfffd, 0xfffd,
34		0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
35		0xfffd, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
36		0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0xfffd,
37		0x00a0, 0x0e01, 0x0e02, 0x0e03, 0x0e04, 0x0e05, 0x0e06, 0x0e07,
38		0x0e08, 0x0e09, 0x0e0a, 0x0e0b, 0x0e0c, 0x0e0d, 0x0e0e, 0x0e0f,
39		0x0e10, 0x0e11, 0x0e12, 0x0e13, 0x0e14, 0x0e15, 0x0e16, 0x0e17,
40		0x0e18, 0x0e19, 0x0e1a, 0x0e1b, 0x0e1c, 0x0e1d, 0x0e1e, 0x0e1f,
41		0x0e20, 0x0e21, 0x0e22, 0x0e23, 0x0e24, 0x0e25, 0x0e26, 0x0e27,
42		0x0e28, 0x0e29, 0x0e2a, 0x0e2b, 0x0e2c, 0x0e2d, 0x0e2e, 0x0e2f,
43		0x0e30, 0x0e31, 0x0e32, 0x0e33, 0x0e34, 0x0e35, 0x0e36, 0x0e37,
44		0x0e38, 0x0e39, 0x0e3a, 0xfffd, 0xfffd, 0xfffd, 0xfffd, 0x0e3f,
45		0x0e40, 0x0e41, 0x0e42, 0x0e43, 0x0e44, 0x0e45, 0x0e46, 0x0e47,
46		0x0e48, 0x0e49, 0x0e4a, 0x0e4b, 0x0e4c, 0x0e4d, 0x0e4e, 0x0e4f,
47		0x0e50, 0x0e51, 0x0e52, 0x0e53, 0x0e54, 0x0e55, 0x0e56, 0x0e57,
48		0x0e58, 0x0e59, 0x0e5a, 0x0e5b, 0xfffd, 0xfffd, 0xfffd, 0xfffd
49		};
50
51		/* Unicode to ASCII character lookup tables for the Windows 874 codepage
52		* Unknown are filled with the ASCII replacement character 0x1a
53		*/
54		const uint8_t libuna_codepage_windows_874_unicode_to_byte_stream_base_0x0e00[ 96 ] = {
55		0x1a, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
56		0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
57		0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
58		0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
59		0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
60		0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
61		0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
62		0xd8, 0xd9, 0xda, 0x1a, 0x1a, 0x1a, 0x1a, 0xdf,
63		0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
64		0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
65		0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
66		0xf8, 0xf9, 0xfa, 0xfb, 0x1a, 0x1a, 0x1a, 0x1a
67		};
68
69		const uint8_t libuna_codepage_windows_874_unicode_to_byte_stream_base_0x2018[ 8 ] = {
70		0x91, 0x92, 0x1a, 0x1a, 0x93, 0x94, 0x1a, 0x1a
71		};
72
73		/* Copies an Unicode character from a Windows 874 encoded byte stream
74		* Returns 1 if successful or -1 on error
75		*/
76		int libuna_codepage_windows_874_copy_from_byte_stream(
77		libuna_unicode_character_t *unicode_character,
78		const uint8_t *byte_stream,
79		size_t byte_stream_size,
80		size_t *byte_stream_index,
81		libcerror_error_t **error )
82	0	{
83	0	static char *function = "libuna_codepage_windows_874_copy_from_byte_stream";
84	0	libuna_unicode_character_t safe_unicode_character = 0xfffd;
85	0	size_t safe_byte_stream_index = 0;
86	0	uint8_t byte_stream_character = 0;
87
88	0	if( unicode_character == NULL )
89	0	{
90	0	libcerror_error_set(
91	0	error,
92	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
93	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
94	0	"%s: invalid Unicode character.",
95	0	function );
96
97	0	return( -1 );
98	0	}
99	0	if( byte_stream == NULL )
100	0	{
101	0	libcerror_error_set(
102	0	error,
103	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
104	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
105	0	"%s: invalid byte stream.",
106	0	function );
107
108	0	return( -1 );
109	0	}
110	0	if( byte_stream_size > (size_t) SSIZE_MAX )
111	0	{
112	0	libcerror_error_set(
113	0	error,
114	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
115	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
116	0	"%s: invalid byte stream size value exceeds maximum.",
117	0	function );
118
119	0	return( -1 );
120	0	}
121	0	if( byte_stream_index == NULL )
122	0	{
123	0	libcerror_error_set(
124	0	error,
125	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
126	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
127	0	"%s: invalid byte stream index.",
128	0	function );
129
130	0	return( -1 );
131	0	}
132	0	safe_byte_stream_index = *byte_stream_index;
133
134	0	if( safe_byte_stream_index >= byte_stream_size )
135	0	{
136	0	libcerror_error_set(
137	0	error,
138	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
139	0	LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
140	0	"%s: byte stream too small.",
141	0	function );
142
143	0	return( -1 );
144	0	}
145	0	byte_stream_character = byte_stream[ safe_byte_stream_index++ ];
146
147	0	if( byte_stream_character < 0x80 )
148	0	{
149	0	safe_unicode_character = byte_stream_character;
150	0	}
151	0	else
152	0	{
153	0	byte_stream_character -= 0x80;
154
155	0	safe_unicode_character = libuna_codepage_windows_874_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
156	0	}
157	0	*unicode_character = safe_unicode_character;
158	0	*byte_stream_index = safe_byte_stream_index;
159
160	0	return( 1 );
161	0	}
162
163		/* Copies an Unicode character to a Windows 874 encoded byte stream
164		* Returns 1 if successful or -1 on error
165		*/
166		int libuna_codepage_windows_874_copy_to_byte_stream(
167		libuna_unicode_character_t unicode_character,
168		uint8_t *byte_stream,
169		size_t byte_stream_size,
170		size_t *byte_stream_index,
171		libcerror_error_t **error )
172	0	{
173	0	static char *function = "libuna_codepage_windows_874_copy_to_byte_stream";
174	0	size_t safe_byte_stream_index = 0;
175	0	uint16_t byte_stream_value = 0x001a;
176
177	0	if( byte_stream == NULL )
178	0	{
179	0	libcerror_error_set(
180	0	error,
181	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
182	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
183	0	"%s: invalid byte stream.",
184	0	function );
185
186	0	return( -1 );
187	0	}
188	0	if( byte_stream_size > (size_t) SSIZE_MAX )
189	0	{
190	0	libcerror_error_set(
191	0	error,
192	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
193	0	LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
194	0	"%s: invalid byte stream size value exceeds maximum.",
195	0	function );
196
197	0	return( -1 );
198	0	}
199	0	if( byte_stream_index == NULL )
200	0	{
201	0	libcerror_error_set(
202	0	error,
203	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
204	0	LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
205	0	"%s: invalid byte stream index.",
206	0	function );
207
208	0	return( -1 );
209	0	}
210	0	safe_byte_stream_index = *byte_stream_index;
211
212	0	if( safe_byte_stream_index >= byte_stream_size )
213	0	{
214	0	libcerror_error_set(
215	0	error,
216	0	LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
217	0	LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
218	0	"%s: byte stream too small.",
219	0	function );
220
221	0	return( -1 );
222	0	}
223	0	if( ( unicode_character < 0x0080 )
224	0	\|\| ( unicode_character == 0x00a0 ) )
225	0	{
226	0	byte_stream_value = (uint16_t) unicode_character;
227	0	}
228	0	else if( ( unicode_character >= 0x0e00 )
229	0	&& ( unicode_character < 0x0e60 ) )
230	0	{
231	0	unicode_character -= 0x0e00;
232
233	0	byte_stream_value = libuna_codepage_windows_874_unicode_to_byte_stream_base_0x0e00[ unicode_character ];
234	0	}
235	0	else if( ( unicode_character >= 0x2018 )
236	0	&& ( unicode_character < 0x2020 ) )
237	0	{
238	0	unicode_character -= 0x2018;
239
240	0	byte_stream_value = libuna_codepage_windows_874_unicode_to_byte_stream_base_0x2018[ unicode_character ];
241	0	}
242	0	else switch( unicode_character )
243	0	{
244	0	case 0x2013:
245	0	byte_stream_value = 0x96;
246	0	break;
247
248	0	case 0x2014:
249	0	byte_stream_value = 0x97;
250	0	break;
251
252	0	case 0x2022:
253	0	byte_stream_value = 0x95;
254	0	break;
255
256	0	case 0x2026:
257	0	byte_stream_value = 0x85;
258	0	break;
259
260	0	case 0x20ac:
261	0	byte_stream_value = 0x80;
262	0	break;
263
264	0	default:
265	0	byte_stream_value = 0x1a;
266	0	break;
267	0	}
268	0	byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );
269
270	0	*byte_stream_index = safe_byte_stream_index;
271
272	0	return( 1 );
273	0	}
274