/* * MacArabic 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_arabic.h" #include "libuna_libcerror.h" #include "libuna_types.h" /* Extended ASCII to Unicode character lookup table for the MacArabic codepage * Unknown are filled with the Unicode replacement character 0xfffd */ const uint16_t libuna_codepage_mac_arabic_byte_stream_to_unicode_base_0x80[ 128 ] = { 0x00c4, 0x00a0, 0x00c7, 0x00c9, 0x00d1, 0x00d6, 0x00dc, 0x00e1, 0x00e0, 0x00e2, 0x00e4, 0x06ba, 0x00ab, 0x00e7, 0x00e9, 0x00e8, 0x00ea, 0x00eb, 0x00ed, 0x2026, 0x00ee, 0x00ef, 0x00f1, 0x00f3, 0x00bb, 0x00f4, 0x00f6, 0x00f7, 0x00fa, 0x00f9, 0x00fb, 0x00fc, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x066a, 0x0026, 0x0027, 0x0028, 0x0029, 0x002a, 0x002b, 0x060c, 0x002d, 0x002e, 0x002f, 0x0660, 0x0661, 0x0662, 0x0663, 0x0664, 0x0665, 0x0666, 0x0667, 0x0668, 0x0669, 0x003a, 0x061b, 0x003c, 0x003d, 0x003e, 0x061f, 0x274a, 0x0621, 0x0622, 0x0623, 0x0624, 0x0625, 0x0626, 0x0627, 0x0628, 0x0629, 0x062a, 0x062b, 0x062c, 0x062d, 0x062e, 0x062f, 0x0630, 0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x0636, 0x0637, 0x0638, 0x0639, 0x063a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0640, 0x0641, 0x0642, 0x0643, 0x0644, 0x0645, 0x0646, 0x0647, 0x0648, 0x0649, 0x064a, 0x064b, 0x064c, 0x064d, 0x064e, 0x064f, 0x0650, 0x0651, 0x0652, 0x067e, 0x0679, 0x0686, 0x06d5, 0x06a4, 0x06af, 0x0688, 0x0691, 0x007b, 0x007c, 0x007d, 0x0698, 0x06d2 }; /* Unicode to ASCII character lookup tables for the MacArabic codepage * Unknown are filled with the ASCII replacement character 0x1a */ const uint8_t libuna_codepage_mac_arabic_unicode_to_byte_stream_base_0x0020[ 32 ] = { 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0x25, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0x2c, 0xad, 0xae, 0xaf, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0xba, 0x3b, 0xbc, 0xbd, 0xbe, 0x3f }; const uint8_t libuna_codepage_mac_arabic_unicode_to_byte_stream_base_0x00a0[ 96 ] = { 0x81, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x8c, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x98, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x80, 0x1a, 0x1a, 0x82, 0x1a, 0x83, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x84, 0x1a, 0x1a, 0x1a, 0x1a, 0x85, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x86, 0x1a, 0x1a, 0x1a, 0x88, 0x87, 0x89, 0x1a, 0x8a, 0x1a, 0x1a, 0x8d, 0x8f, 0x8e, 0x90, 0x91, 0x1a, 0x92, 0x94, 0x95, 0x1a, 0x96, 0x1a, 0x97, 0x99, 0x1a, 0x9a, 0x9b, 0x1a, 0x9d, 0x9c, 0x9e, 0x9f, 0x1a, 0x1a, 0x1a }; const uint8_t libuna_codepage_mac_arabic_unicode_to_byte_stream_base_0x0608[ 184 ] = { 0x1a, 0x1a, 0x1a, 0x1a, 0xac, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xbb, 0x1a, 0x1a, 0x1a, 0xbf, 0x1a, 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, 0x1a, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xa5, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xf4, 0x1a, 0x1a, 0x1a, 0x1a, 0xf3, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xf5, 0x1a, 0xf9, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xfa, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xfe, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xf7, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0xf8, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a, 0x8b, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a }; /* Copies an Unicode character from a MacArabic encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_mac_arabic_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_arabic_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_arabic_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 MacArabic encoded byte stream * Returns 1 if successful or -1 on error */ int libuna_codepage_mac_arabic_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_arabic_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 < 0x0020 ) { byte_stream_value = (uint16_t) unicode_character; } else if( ( unicode_character >= 0x0020 ) && ( unicode_character < 0x0040 ) ) { unicode_character -= 0x0020; byte_stream_value = libuna_codepage_mac_arabic_unicode_to_byte_stream_base_0x0020[ unicode_character ]; } else if( ( unicode_character >= 0x0040 ) && ( unicode_character < 0x005b ) ) { byte_stream_value = (uint16_t) unicode_character; } else if( ( unicode_character >= 0x0060 ) && ( unicode_character < 0x007b ) ) { byte_stream_value = (uint16_t) unicode_character; } else if( ( unicode_character >= 0x007e ) && ( 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_arabic_unicode_to_byte_stream_base_0x00a0[ unicode_character ]; } else if( ( unicode_character >= 0x0608 ) && ( unicode_character < 0x06c0 ) ) { unicode_character -= 0x0608; byte_stream_value = libuna_codepage_mac_arabic_unicode_to_byte_stream_base_0x0608[ unicode_character ]; } else switch( unicode_character ) { case 0x005b: byte_stream_value = 0xdb; break; case 0x005c: byte_stream_value = 0xdc; break; case 0x005d: byte_stream_value = 0xdd; break; case 0x005e: byte_stream_value = 0xde; break; case 0x005f: byte_stream_value = 0xdf; break; case 0x007b: byte_stream_value = 0xfb; break; case 0x007c: byte_stream_value = 0xfc; break; case 0x007d: byte_stream_value = 0xfd; break; case 0x06d2: byte_stream_value = 0xff; break; case 0x06d5: byte_stream_value = 0xf6; break; case 0x2026: byte_stream_value = 0x93; break; case 0x274a: byte_stream_value = 0xc0; 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 ); }