/* * BRLTTY - A background process providing access to the console screen (when in * text mode) for a blind person using a refreshable braille display. * * Copyright (C) 1995-2019 by The BRLTTY Developers. * * BRLTTY comes with ABSOLUTELY NO WARRANTY. * * This is free software, placed under the terms of the * GNU Lesser General Public License, as published by the Free Software * Foundation; either version 2.1 of the License, or (at your option) any * later version. Please see the file LICENSE-LGPL for details. * * Web Page: http://brltty.app/ * * This software is maintained by Dave Mielke . */ /* These sequences are sent to the CombiBraille before and after the * speech data itself. The first byte is the length, so embedded nuls are * allowed. */ #define PRE_SPEECH "\002\033S" #define POST_SPEECH "\001\015" /* This is sent to mute the speech. The format is the same as above. */ #define MUTE_SEQ "\003\033S\030" /* The speech data itself is translated character by character. If a * character is less than 33 (i.e. space or control), it is replaced by a * space. If the character is more than MAX_TRANS, it is passed through * as is. Otherwise the character n is replaced by the string vocab[n - 33]. */ #define MAX_TRANS 126 static const char *vocab[MAX_TRANS - 32] = { " exclamation ", " double quote ", " hash ", " dollar ", " percent ", " ampersand ", " quote ", " left paren ", " right paren ", " star ", " plus ", " comma ", " dash ", " dot ", " slash ", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", " colon ", " semicolon ", " less than ", " equals ", " greater than ", " question ", " at ", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", " left bracket ", " backslash ", " right bracket ", " uparrow ", " underline ", " accent ", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", " left brace ", " bar ", " right brace ", " tilde " };