8dfe0837b7
I initially committed libteken to sys/dev/syscons/teken, but now that I'm working on a console driver myself, I noticed this was not a good decision. Move it to sys/teken to make it easier for other drivers to use a terminal emulator. Also list teken.c in sys/conf/files, instead of listing it in all the files.arch files separately.
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*-
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* Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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static void
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teken_scs_set(teken_t *t, unsigned int g, teken_scs_t *ts)
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{
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t->t_scs[g] = ts;
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}
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static void
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teken_scs_switch(teken_t *t, unsigned int g)
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{
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t->t_curscs = g;
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}
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static void
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teken_scs_restore(teken_t *t)
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{
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t->t_scs[t->t_curscs] = t->t_saved_curscs;
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}
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static void
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teken_scs_save(teken_t *t)
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{
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t->t_saved_curscs = t->t_scs[t->t_curscs];
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}
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static teken_char_t
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teken_scs_process(teken_t *t, teken_char_t c)
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{
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return (t->t_scs[t->t_curscs](c));
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}
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/* Unicode points for VT100 box drawing. */
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static const uint16_t teken_boxdrawing[31] = {
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0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
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0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,
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0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,
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0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7
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};
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static teken_char_t
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teken_scs_special_graphics(teken_char_t c)
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{
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/* Box drawing. */
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if (c >= '`' && c <= '~')
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return (teken_boxdrawing[c - '`']);
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return (c);
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}
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static teken_char_t
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teken_scs_uk_national(teken_char_t c)
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{
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/* Pound sign. */
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if (c == '#')
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return (0xa3);
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return (c);
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}
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static teken_char_t
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teken_scs_us_ascii(teken_char_t c)
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{
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/* No processing. */
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return (c);
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}
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