/* * MacGreek codepage 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_mac_greek.h" #include "libuna_libcerror.h" #include "libuna_types.h" /* Extended ASCII to Unicode character lookup table for the MacGreek codepage * Unknown are filled with the Unicode replacement character 0xfffd */ const uint16_t libuna_codepage_mac_greek_byte_stream_to_unicode_base_0x80[ 128 ] = { 0x00c4, 0x00b9, 0x00b2, 0x00c9, 0x00b3, 0x00d6, 0x00dc, 0x0385, 0x00e0, 0x00e2, 0x00e4, 0x0384, 0x00a8, 0x00e7, 0x00e9, 0x00e8, 0x00ea, 0x00eb, 0x00a3, 0x2122, 0x00ee, 0x00ef, 0x2022, 0x00bd, 0x2030, 0x00f4, 0x00f6, 0x00a6, 0x20ac, 0x00f9, 0x00fb, 0x00fc, 0x2020, 0x0393, 0x0394, 0x0398, 0x039b, 0x039e, 0x03a0, 0x00df, 0x00ae, 0x00a9, 0x03a3, 0x03aa, 0x00a7, 0x2260, 0x00b0, 0x00b7, 0x0391, 0x00b1, 0x2264, 0x2265, 0x00a5, 0x0392, 0x0395, 0x0396, 0x0397, 0x0399, 0x039a, 0x039c, 0x03a6, 0x03ab, 0x03a8, 0x03a9, 0x03ac, 0x039d, 0x00ac, 0x039f, 0x03a1, 0x2248, 0x03a4, 0x00ab, 0x00bb, 0x2026, 0x00a0, 0x03a5, 0x03a7, 0x0386, 0x0388, 0x0153, 0x2013, 0x2015, 0x201c, 0x201d, 0x2018, 0x2019, 0x00f7, 0x0389, 0x038a, 0x038c, 0x038e, 0x03ad, 0x03ae, 0x03af, 0x03cc, 0x038f, 0x03cd, 0x03b1, 0x03b2, 0x03c8, 0x03b4, 0x03b5, 0x03c6, 0x03b3, 0x03b7, 0x03b9, 0x03be, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03bf, 0x03c0, 0x03ce, 0x03c1, 0x03c3, 0x03c4, 0x03b8, 0x03c9, 0x03c2, 0x03c7, 0x03c5, 0x03b6, 0x03ca, 0x03cb, 0x0390, 0x03b0, 0x00ad }; /* Unicode to ASCII character lookup tables for the MacGreek codepage * Unknown are filled with the ASCII replacement character 0x1a */ const uint8_t libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x00a0[ 96 ] = { 0xca, 0x1a, 0x1a, 0x92, 0x1a, 0xb4, 0x9b, 0xac, 0x8c, 0xa9, 0x1a, 0xc7, 0xc2, 0xff, 0xa8, 0x1a, 0xae, 0xb1, 0x82, 0x84, 0x1a, 0x1a, 0x1a, 0xaf, 0x1a, 0x81, 0x1a, 0xc8, 0x1a, 0x97, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x80, 0x1a, 0x1a, 0x1a, 0x1a, 0x83, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x85, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x86, 0x1a, 0x1a, 0xa7, 0x88, 0x1a, 0x89, 0x1a, 0x8a, 0x1a, 0x1a, 0x8d, 0x8f, 0x8e, 0x90, 0x91, 0x1a, 0x1a, 0x94, 0x95, 0x1a, 0x1a, 0x1a, 0x1a, 0x99, 0x1a, 0x9a, 0xd6, 0x1a, 0x9d, 0x1a, 0x9e, 0x9f, 0x1a, 0x1a, 0x1a }; const uint8_t libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x0380[ 80 ] = { 0x1a, 0x1a, 0x1a, 0x1a, 0x8b, 0x87, 0xcd, 0x1a, 0xce, 0xd7, 0xd8, 0x1a, 0xd9, 0x1a, 0xda, 0xdf, 0xfd, 0xb0, 0xb5, 0xa1, 0xa2, 0xb6, 0xb7, 0xb8, 0xa3, 0xb9, 0xba, 0xa4, 0xbb, 0xc1, 0xa5, 0xc3, 0xa6, 0xc4, 0x1a, 0xaa, 0xc6, 0xcb, 0xbc, 0xcc, 0xbe, 0xbf, 0xab, 0xbd, 0xc0, 0xdb, 0xdc, 0xdd, 0xfe, 0xe1, 0xe2, 0xe7, 0xe4, 0xe5, 0xfa, 0xe8, 0xf5, 0xe9, 0xeb, 0xec, 0xed, 0xee, 0xea, 0xef, 0xf0, 0xf2, 0xf7, 0xf3, 0xf4, 0xf9, 0xe6, 0xf8, 0xe3, 0xf6, 0xfb, 0xfc, 0xde, 0xe0, 0xf1, 0x1a }; const uint8_t libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x2010[ 40 ] = { 0x1a, 0x1a, 0x1a, 0xd0, 0x1a, 0xd1, 0x1a, 0x1a, 0xd4, 0xd5, 0x1a, 0x1a, 0xd2, 0xd3, 0x1a, 0x1a, 0xa0, 0x1a, 0x96, 0x1a, 0x1a, 0x1a, 0xc9, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x98, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a }; /* Copies an Unicode character from a MacGreek encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_mac_greek_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_mac_greek_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_mac_greek_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 MacGreek encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_mac_greek_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_mac_greek_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 ) ) { unicode_character -= 0x00a0; byte_stream_value = libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x00a0[ unicode_character ]; } else if( ( unicode_character >= 0x0380 ) && ( unicode_character < 0x03d0 ) ) { unicode_character -= 0x0380; byte_stream_value = libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x0380[ unicode_character ]; } else if( ( unicode_character >= 0x2010 ) && ( unicode_character < 0x2038 ) ) { unicode_character -= 0x2010; byte_stream_value = libuna_codepage_mac_greek_unicode_to_byte_stream_base_0x2010[ unicode_character ]; } else switch( unicode_character ) { case 0x0153: byte_stream_value = 0xcf; break; case 0x20ac: byte_stream_value = 0x9c; break; case 0x2122: byte_stream_value = 0x93; break; case 0x2248: byte_stream_value = 0xc5; break; case 0x2260: byte_stream_value = 0xad; break; case 0x2264: byte_stream_value = 0xb2; break; case 0x2265: byte_stream_value = 0xb3; 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 ); }