/* * Windows 1251 codepage (Cyrillic) functions * * Copyright (C) 2008-2023, Joachim Metz * * 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 . */ #include #include #include "libuna_codepage_windows_1251.h" #include "libuna_libcerror.h" #include "libuna_types.h" /* Extended ASCII to Unicode character lookup table for the Windows 1251 codepage * Unknown are filled with the Unicode replacement character 0xfffd */ const uint16_t libuna_codepage_windows_1251_byte_stream_to_unicode_base_0x80[ 128 ] = { 0x0402, 0x0403, 0x201a, 0x0453, 0x201e, 0x2026, 0x2020, 0x2021, 0x20ac, 0x2030, 0x0409, 0x2039, 0x040a, 0x040c, 0x040b, 0x040f, 0x0452, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014, 0xfffd, 0x2122, 0x0459, 0x203a, 0x045a, 0x045c, 0x045b, 0x045f, 0x00a0, 0x040e, 0x045e, 0x0408, 0x00a4, 0x0490, 0x00a6, 0x00a7, 0x0401, 0x00a9, 0x0404, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x0407, 0x00b0, 0x00b1, 0x0406, 0x0456, 0x0491, 0x00b5, 0x00b6, 0x00b7, 0x0451, 0x2116, 0x0454, 0x00bb, 0x0458, 0x0405, 0x0455, 0x0457, 0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417, 0x0418, 0x0419, 0x041a, 0x041b, 0x041c, 0x041d, 0x041e, 0x041f, 0x0420, 0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429, 0x042a, 0x042b, 0x042c, 0x042d, 0x042e, 0x042f, 0x0430, 0x0431, 0x0432, 0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 0x0438, 0x0439, 0x043a, 0x043b, 0x043c, 0x043d, 0x043e, 0x043f, 0x0440, 0x0441, 0x0442, 0x0443, 0x0444, 0x0445, 0x0446, 0x0447, 0x0448, 0x0449, 0x044a, 0x044b, 0x044c, 0x044d, 0x044e, 0x044f }; /* Unicode to ASCII character lookup tables for the Windows 1251 codepage * Unknown are filled with the ASCII replacement character 0x1a */ const uint8_t libuna_codepage_windows_1251_unicode_to_byte_stream_base_0x00a0[ 32 ] = { 0xa0, 0x1a, 0x1a, 0x1a, 0xa4, 0x1a, 0xa6, 0xa7, 0x1a, 0xa9, 0x1a, 0xab, 0xac, 0xad, 0xae, 0x1a, 0xb0, 0xb1, 0x1a, 0x1a, 0x1a, 0xb5, 0xb6, 0xb7, 0x1a, 0x1a, 0x1a, 0xbb, 0x1a, 0x1a, 0x1a, 0x1a }; const uint8_t libuna_codepage_windows_1251_unicode_to_byte_stream_base_0x0400[ 96 ] = { 0x1a, 0xa8, 0x80, 0x81, 0xaa, 0xbd, 0xb2, 0xaf, 0xa3, 0x8a, 0x8c, 0x8e, 0x8d, 0x1a, 0xa1, 0x8f, 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, 0xdb, 0xdc, 0xdd, 0xde, 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, 0xfc, 0xfd, 0xfe, 0xff, 0x1a, 0xb8, 0x90, 0x83, 0xba, 0xbe, 0xb3, 0xbf, 0xbc, 0x9a, 0x9c, 0x9e, 0x9d, 0x1a, 0xa2, 0x9f }; const uint8_t libuna_codepage_windows_1251_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 1251 encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_windows_1251_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_1251_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_1251_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 1251 encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_windows_1251_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_1251_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 < 0x00c0 ) ) { unicode_character -= 0x00a0; byte_stream_value = libuna_codepage_windows_1251_unicode_to_byte_stream_base_0x00a0[ unicode_character ]; } else if( ( unicode_character >= 0x0400 ) && ( unicode_character < 0x0460 ) ) { unicode_character -= 0x0400; byte_stream_value = libuna_codepage_windows_1251_unicode_to_byte_stream_base_0x0400[ unicode_character ]; } else if( ( unicode_character >= 0x2010 ) && ( unicode_character < 0x2028 ) ) { unicode_character -= 0x2010; byte_stream_value = libuna_codepage_windows_1251_unicode_to_byte_stream_base_0x2010[ unicode_character ]; } else switch( unicode_character ) { case 0x0490: byte_stream_value = 0xa5; break; case 0x0491: byte_stream_value = 0xb4; 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 = 0x88; break; case 0x2116: byte_stream_value = 0xb9; 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 ); }