Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/teken/teken_scs.h
39475 views
1
/*-

2
 * SPDX-License-Identifier: BSD-2-Clause

3
 *

4
 * Copyright (c) 2009 Ed Schouten <[email protected]>

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


29
static inline teken_char_t

30
teken_scs_process(const teken_t *t, teken_char_t c)

31
{

32


33
	return (t->t_scs[t->t_curscs](t, c));

34
}

35


36
/* Unicode points for VT100 box drawing. */

37
static const uint16_t teken_boxdrawing_unicode[31] = {

38
    0x25c6, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,

39
    0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,

40
    0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,

41
    0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7

42
};

43


44
/* ASCII points for VT100 box drawing. */

45
static const uint8_t teken_boxdrawing_8bit[31] = {

46
    '?', '?', 'H', 'F', 'C', 'L', '?', '?',

47
    'N', 'V', '+', '+', '+', '+', '+', '-',

48
    '-', '-', '-', '-', '+', '+', '+', '+',

49
    '|', '?', '?', '?', '?', '?', '?',

50
};

51


52
static teken_char_t

53
teken_scs_special_graphics(const teken_t *t, teken_char_t c)

54
{

55


56
	/* Box drawing. */

57
	if (c >= '`' && c <= '~')

58
		return (t->t_stateflags & TS_8BIT ?

59
		    teken_boxdrawing_8bit[c - '`'] :

60
		    teken_boxdrawing_unicode[c - '`']);

61
	return (c);

62
}

63


64
static teken_char_t

65
teken_scs_uk_national(const teken_t *t, teken_char_t c)

66
{

67


68
	/* Pound sign. */

69
	if (c == '#')

70
		return (t->t_stateflags & TS_8BIT ? 0x9c : 0xa3);

71
	return (c);

72
}

73


74
static teken_char_t

75
teken_scs_us_ascii(const teken_t *t, teken_char_t c)

76
{

77


78
	/* No processing. */

79
	(void)t;

80
	return (c);

81
}

82


83