teken_scs.h revision 187469
1/*- 2 * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/dev/syscons/teken/teken_scs.h 187469 2009-01-20 11:34:28Z ed $ 27 */ 28 29static void 30teken_scs_set(teken_t *t, unsigned int g, teken_scs_t *ts) 31{ 32 33 t->t_scs[g] = ts; 34} 35 36static void 37teken_scs_switch(teken_t *t, unsigned int g) 38{ 39 40 t->t_curscs = g; 41} 42 43static void 44teken_scs_restore(teken_t *t) 45{ 46 47 t->t_scs[t->t_curscs] = t->t_saved_curscs; 48} 49 50static void 51teken_scs_save(teken_t *t) 52{ 53 54 t->t_saved_curscs = t->t_scs[t->t_curscs]; 55} 56 57static teken_char_t 58teken_scs_process(teken_t *t, teken_char_t c) 59{ 60 61 return (t->t_scs[t->t_curscs](c)); 62} 63 64/* Unicode points for VT100 box drawing. */ 65static const teken_char_t teken_boxdrawing[31] = { 66 0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1, 67 0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba, 68 0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c, 69 0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7 70}; 71 72static teken_char_t 73teken_scs_special_graphics(teken_char_t c) 74{ 75 76 /* Box drawing. */ 77 if (c >= '`' && c <= '~') 78 return (teken_boxdrawing[c - '`']); 79 return (c); 80} 81 82static teken_char_t 83teken_scs_uk_national(teken_char_t c) 84{ 85 86 /* Pound sign. */ 87 if (c == '#') 88 return (0xa3); 89 return (c); 90} 91 92static teken_char_t 93teken_scs_us_ascii(teken_char_t c) 94{ 95 96 /* No processing. */ 97 return (c); 98} 99