lib_acs.c revision 50276 
1/****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
3 *                                                                          *
4 * Permission is hereby granted, free of charge, to any person obtaining a  *
5 * copy of this software and associated documentation files (the            *
6 * "Software"), to deal in the Software without restriction, including      *
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8 * distribute, distribute with modifications, sublicense, and/or sell       *
9 * copies of the Software, and to permit persons to whom the Software is    *
10 * furnished to do so, subject to the following conditions:                 *
11 *                                                                          *
12 * The above copyright notice and this permission notice shall be included  *
13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 *                                                                          *
23 * Except as contained in this notice, the name(s) of the above copyright   *
24 * holders shall not be used in advertising or otherwise to promote the     *
25 * sale, use or other dealings in this Software without prior written       *
26 * authorization.                                                           *
27 ****************************************************************************/
28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 ****************************************************************************/
33
34
35
36#include <curses.priv.h>
37#include <term.h>	/* ena_acs, acs_chars */
38
39MODULE_ID("$Id: lib_acs.c,v 1.15 1999/02/18 11:31:43 tom Exp $")
40
41chtype acs_map[ACS_LEN];
42
43void _nc_init_acs(void)
44{
45	T(("initializing ACS map"));
46
47	/*
48	 * Initializations for a UNIX-like multi-terminal environment.  Use
49	 * ASCII chars and count on the terminfo description to do better.
50	 */
51	ACS_ULCORNER = '+';	/* should be upper left corner */
52	ACS_LLCORNER = '+';	/* should be lower left corner */
53	ACS_URCORNER = '+';	/* should be upper right corner */
54	ACS_LRCORNER = '+';	/* should be lower right corner */
55	ACS_RTEE     = '+';	/* should be tee pointing left */
56	ACS_LTEE     = '+';	/* should be tee pointing right */
57	ACS_BTEE     = '+';	/* should be tee pointing up */
58	ACS_TTEE     = '+';	/* should be tee pointing down */
59	ACS_HLINE    = '-';	/* should be horizontal line */
60	ACS_VLINE    = '|';	/* should be vertical line */
61	ACS_PLUS     = '+';	/* should be large plus or crossover */
62	ACS_S1       = '~';	/* should be scan line 1 */
63	ACS_S9       = '_';	/* should be scan line 9 */
64	ACS_DIAMOND  = '+';	/* should be diamond */
65	ACS_CKBOARD  = ':';	/* should be checker board (stipple) */
66	ACS_DEGREE   = '\'';	/* should be degree symbol */
67	ACS_PLMINUS  = '#';	/* should be plus/minus */
68	ACS_BULLET   = 'o';	/* should be bullet */
69	ACS_LARROW   = '<';	/* should be arrow pointing left */
70	ACS_RARROW   = '>';	/* should be arrow pointing right */
71	ACS_DARROW   = 'v';	/* should be arrow pointing down */
72	ACS_UARROW   = '^';	/* should be arrow pointing up */
73	ACS_BOARD    = '#';	/* should be board of squares */
74	ACS_LANTERN  = '#';	/* should be lantern symbol */
75	ACS_BLOCK    = '#';	/* should be solid square block */
76	/* these defaults were invented for ncurses */
77	ACS_S3       = '-';	/* should be scan line 3 */
78	ACS_S7       = '-';	/* should be scan line 7 */
79	ACS_LEQUAL   = '<';	/* should be less-than-or-equal-to */
80	ACS_GEQUAL   = '>';	/* should be greater-than-or-equal-to */
81	ACS_PI       = '*';	/* should be greek pi */
82        ACS_NEQUAL   = '!';	/* should be not-equal */
83        ACS_STERLING = 'f';	/* should be pound-sterling symbol */
84
85	if (ena_acs != NULL)
86	{
87		TPUTS_TRACE("ena_acs");
88		putp(ena_acs);
89	}
90
91#define ALTCHAR(c)	((chtype)(((unsigned char)(c)) | A_ALTCHARSET))
92
93	if (acs_chars != NULL) {
94	    size_t i = 0;
95	    size_t length = strlen(acs_chars);
96
97		while (i < length)
98			switch (acs_chars[i]) {
99			case 'l':case 'm':case 'k':case 'j':
100			case 'u':case 't':case 'v':case 'w':
101			case 'q':case 'x':case 'n':case 'o':
102			case 's':case '`':case 'a':case 'f':
103			case 'g':case '~':case ',':case '+':
104			case '.':case '-':case 'h':case 'i':
105			case '0':case 'p':case 'r':case 'y':
106			case 'z':case '{':case '|':case '}':
107				acs_map[(unsigned int)acs_chars[i]] =
108					ALTCHAR(acs_chars[i+1]);
109				i++;
110				/* FALLTHRU */
111			default:
112				i++;
113				break;
114			}
115	}
116#ifdef TRACE
117	/* Show the equivalent mapping, noting if it does not match the
118	 * given attribute, whether by re-ordering or duplication.
119	 */
120	if (_nc_tracing & TRACE_CALLS) {
121		size_t n, m;
122		char show[SIZEOF(acs_map) + 1];
123		for (n = 1, m = 0; n < SIZEOF(acs_map); n++) {
124			if (acs_map[n] != 0) {
125				show[m++] = (char)n;
126				show[m++] = TextOf(acs_map[n]);
127			}
128		}
129		show[m] = 0;
130		_tracef("%s acs_chars %s",
131			(acs_chars == NULL)
132			? "NULL"
133			: (strcmp(acs_chars, show)
134				? "DIFF"
135				: "SAME"),
136			_nc_visbuf(show));
137	}
138#endif /* TRACE */
139}
140