1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 static inline teken_char_t 32 teken_scs_process(const teken_t *t, teken_char_t c) 33 { 34 35 return (t->t_scs[t->t_curscs](t, c)); 36 } 37 38 /* Unicode points for VT100 box drawing. */ 39 static const uint16_t teken_boxdrawing_unicode[31] = { 40 0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1, 41 0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba, 42 0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c, 43 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7 44 }; 45 46 /* ASCII points for VT100 box drawing. */ 47 static const uint8_t teken_boxdrawing_8bit[31] = { 48 '?', '?', 'H', 'F', 'C', 'L', '?', '?', 49 'N', 'V', '+', '+', '+', '+', '+', '-', 50 '-', '-', '-', '-', '+', '+', '+', '+', 51 '|', '?', '?', '?', '?', '?', '?', 52 }; 53 54 static teken_char_t 55 teken_scs_special_graphics(const teken_t *t, teken_char_t c) 56 { 57 58 /* Box drawing. */ 59 if (c >= '`' && c <= '~') 60 return (t->t_stateflags & TS_8BIT ? 61 teken_boxdrawing_8bit[c - '`'] : 62 teken_boxdrawing_unicode[c - '`']); 63 return (c); 64 } 65 66 static teken_char_t 67 teken_scs_uk_national(const teken_t *t, teken_char_t c) 68 { 69 70 /* Pound sign. */ 71 if (c == '#') 72 return (t->t_stateflags & TS_8BIT ? 0x9c : 0xa3); 73 return (c); 74 } 75 76 static teken_char_t 77 teken_scs_us_ascii(const teken_t *t, teken_char_t c) 78 { 79 80 /* No processing. */ 81 (void)t; 82 return (c); 83 } 84