release/src/router/libncurses/ncurses/widechar/lib_wacs.c

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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 }