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28 
29 /****************************************************************************
30  *  Author: Thomas Dickey 2002                                              *
31  ****************************************************************************/
32 
33 #include <curses.priv.h>
34 
35 MODULE_ID("$Id: lib_wacs.c,v 1.10 2010/12/19 01:43:19 tom Exp $")
36 
37 NCURSES_EXPORT_VAR(cchar_t) * _nc_wacs = 0;
38 
39 NCURSES_EXPORT(void)
40 _nc_init_wacs(void)
41 {
42     /* *INDENT-OFF* */
43     static const struct {
44 	unsigned map;
45 	int	value[2];
46     } table[] = {
47 	/* VT100 symbols */
48 	{ 'l',	{ '+',	0x250c }},	/* upper left corner */
49 	{ 'm',	{ '+',	0x2514 }},	/* lower left corner */
50 	{ 'k',	{ '+',	0x2510 }},	/* upper right corner */
51 	{ 'j',	{ '+',	0x2518 }},	/* lower right corner */
52 	{ 't',	{ '+',	0x251c }},	/* tee pointing left */
53 	{ 'u',	{ '+',	0x2524 }},	/* tee pointing right */
54 	{ 'v',	{ '+',	0x2534 }},	/* tee pointing up */
55 	{ 'w',	{ '+',	0x252c }},	/* tee pointing down */
56 	{ 'q',	{ '-',	0x2500 }},	/* horizontal line */
57 	{ 'x',	{ '|',	0x2502 }},	/* vertical line */
58 	{ 'n',	{ '+',	0x253c }},	/* large plus or crossover */
59 	{ 'o',	{ '~',	0x23ba }},	/* scan line 1 */
60 	{ 's',	{ '_',	0x23bd }},	/* scan line 9 */
61 	{ '`',	{ '+',	0x25c6 }},	/* diamond */
62 	{ 'a',	{ ':',	0x2592 }},	/* checker board (stipple) */
63 	{ 'f',	{ '\'',	0x00b0 }},	/* degree symbol */
64 	{ 'g',	{ '#',	0x00b1 }},	/* plus/minus */
65 	{ '~',	{ 'o',	0x00b7 }},	/* bullet */
66 	/* Teletype 5410v1 symbols */
67 	{ ',',	{ '<',	0x2190 }},	/* arrow pointing left */
68 	{ '+',	{ '>',	0x2192 }},	/* arrow pointing right */
69 	{ '.',	{ 'v',	0x2193 }},	/* arrow pointing down */
70 	{ '-',	{ '^',	0x2191 }},	/* arrow pointing up */
71 	{ 'h',	{ '#',	0x2592 }},	/* board of squares */
72 	{ 'i',	{ '#',	0x2603 }},	/* lantern symbol */
73 	{ '0',	{ '#',	0x25ae }},	/* solid square block */
74 	/* these defaults were invented for ncurses */
75 	{ 'p',	{ '-',	0x23bb }},	/* scan line 3 */
76 	{ 'r',	{ '-',	0x23bc }},	/* scan line 7 */
77 	{ 'y',	{ '<',	0x2264 }},	/* less-than-or-equal-to */
78 	{ 'z',	{ '>',	0x2265 }},	/* greater-than-or-equal-to */
79 	{ '{',	{ '*',	0x03c0 }},	/* greek pi */
80 	{ '|',	{ '!',	0x2260 }},	/* not-equal */
81 	{ '}',	{ 'f',	0x00a3 }},	/* pound-sterling symbol */
82 	/* thick-line-drawing */
83 	{ 'L',	{ '+',	0x250f }},	/* upper left corner */
84 	{ 'M',	{ '+',	0x2517 }},	/* lower left corner */
85 	{ 'K',	{ '+',	0x2513 }},	/* upper right corner */
86 	{ 'J',	{ '+',	0x251b }},	/* lower right corner */
87 	{ 'T',	{ '+',	0x2523 }},	/* tee pointing left */
88 	{ 'U',	{ '+',	0x252b }},	/* tee pointing right */
89 	{ 'V',	{ '+',	0x253b }},	/* tee pointing up */
90 	{ 'W',	{ '+',	0x2533 }},	/* tee pointing down */
91 	{ 'Q',	{ '-',	0x2501 }},	/* horizontal line */
92 	{ 'X',	{ '|',	0x2503 }},	/* vertical line */
93 	{ 'N',	{ '+',	0x254b }},	/* large plus or crossover */
94 	/* double-line-drawing */
95 	{ 'C',	{ '+',	0x2554 }},	/* upper left corner */
96 	{ 'D',	{ '+',	0x255a }},	/* lower left corner */
97 	{ 'B',	{ '+',	0x2557 }},	/* upper right corner */
98 	{ 'A',	{ '+',	0x255d }},	/* lower right corner */
99 	{ 'G',	{ '+',	0x2563 }},	/* tee pointing left */
100 	{ 'F',	{ '+',	0x2560 }},	/* tee pointing right */
101 	{ 'H',	{ '+',	0x2569 }},	/* tee pointing up */
102 	{ 'I',	{ '+',	0x2566 }},	/* tee pointing down */
103 	{ 'R',	{ '-',	0x2550 }},	/* horizontal line */
104 	{ 'Y',	{ '|',	0x2551 }},	/* vertical line */
105 	{ 'E',	{ '+',	0x256c }},	/* large plus or crossover */
106     };
107     /* *INDENT-ON* */
108 
109     unsigned n, m;
110     int active = _nc_unicode_locale();
111 
112     /*
113      * If we're running in a UTF-8 locale, will use the Unicode equivalents
114      * rather than the terminfo information.  Actually the terminfo should
115      * be the rule, but there are people who are offended by the notion that
116      * a Unicode-capable terminal would have something resembling a mode.
117      * So the smacs/rmacs may be disabled -- sometime.
118      */
119     T(("initializing WIDE-ACS map (Unicode is%s active)",
120        active ? "" : " not"));
121 
122     _nc_wacs = typeCalloc(cchar_t, ACS_LEN);
123     for (n = 0; n < SIZEOF(table); ++n) {
124 	int wide = wcwidth(table[n].value[active]);
125 
126 	m = table[n].map;
127 	if (active && (wide == 1)) {
128 	    SetChar(_nc_wacs[m], table[n].value[active], A_NORMAL);
129 	} else if (acs_map[m] & A_ALTCHARSET) {
130 	    SetChar(_nc_wacs[m], m, A_ALTCHARSET);
131 	} else {
132 	    SetChar(_nc_wacs[m], table[n].value[0], A_NORMAL);
133 	}
134 
135 	T(("#%d, SetChar(%c, %#04x) = %s",
136 	   n, m,
137 	   table[n].value[active],
138 	   _tracecchar_t(&_nc_wacs[m])));
139     }
140 }
141