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/* $OpenBSD: lib_acs.c,v 1.6 2023/10/17 09:52:09 nicm Exp $ */
/****************************************************************************
* Copyright 2018-2019,2020 Thomas E. Dickey *
* Copyright 1998-2014,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
* and: Thomas E. Dickey 1996-on *
* and: Juergen Pfeifer 2008 *
****************************************************************************/
#include <curses.priv.h>
#ifndef CUR
#define CUR SP_TERMTYPE
#endif
MODULE_ID("$Id: lib_acs.c,v 1.6 2023/10/17 09:52:09 nicm Exp $")
#if BROKEN_LINKER || USE_REENTRANT
#define MyBuffer _nc_prescreen.real_acs_map
NCURSES_EXPORT(chtype *)
NCURSES_PUBLIC_VAR(acs_map) (void)
{
if (MyBuffer == 0)
MyBuffer = typeCalloc(chtype, ACS_LEN);
return MyBuffer;
}
#undef MyBuffer
#else
NCURSES_EXPORT_VAR (chtype) acs_map[ACS_LEN] =
{
0
};
#endif
#ifdef USE_TERM_DRIVER
NCURSES_EXPORT(chtype)
NCURSES_SP_NAME(_nc_acs_char) (NCURSES_SP_DCLx int c)
{
chtype *map;
if (c < 0 || c >= ACS_LEN)
return (chtype) 0;
map = (SP_PARM != 0) ? SP_PARM->_acs_map :
#if BROKEN_LINKER || USE_REENTRANT
_nc_prescreen.real_acs_map
#else
acs_map
#endif
;
return map[c];
}
#endif /* USE_TERM_DRIVER */
NCURSES_EXPORT(void)
NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_DCL0)
{
chtype *fake_map = acs_map;
chtype *real_map = SP_PARM != 0 ? SP_PARM->_acs_map : fake_map;
int j;
T(("initializing ACS map"));
/*
* If we're using this from curses (rather than terminfo), we are storing
* the mapping information in the SCREEN struct so we can decide how to
* render it.
*/
if (real_map != fake_map) {
for (j = 1; j < ACS_LEN; ++j) {
real_map[j] = 0;
fake_map[j] = A_ALTCHARSET | (chtype) j;
if (SP_PARM)
SP_PARM->_screen_acs_map[j] = FALSE;
}
} else {
for (j = 1; j < ACS_LEN; ++j) {
real_map[j] = 0;
}
}
/*
* Initializations for a UNIX-like multi-terminal environment. Use
* ASCII chars and count on the terminfo description to do better.
*/
real_map['l'] = '+'; /* should be upper left corner */
real_map['m'] = '+'; /* should be lower left corner */
real_map['k'] = '+'; /* should be upper right corner */
real_map['j'] = '+'; /* should be lower right corner */
real_map['u'] = '+'; /* should be tee pointing left */
real_map['t'] = '+'; /* should be tee pointing right */
real_map['v'] = '+'; /* should be tee pointing up */
real_map['w'] = '+'; /* should be tee pointing down */
real_map['q'] = '-'; /* should be horizontal line */
real_map['x'] = '|'; /* should be vertical line */
real_map['n'] = '+'; /* should be large plus or crossover */
real_map['o'] = '~'; /* should be scan line 1 */
real_map['s'] = '_'; /* should be scan line 9 */
real_map['`'] = '+'; /* should be diamond */
real_map['a'] = ':'; /* should be checker board (stipple) */
real_map['f'] = '\''; /* should be degree symbol */
real_map['g'] = '#'; /* should be plus/minus */
real_map['~'] = 'o'; /* should be bullet */
real_map[','] = '<'; /* should be arrow pointing left */
real_map['+'] = '>'; /* should be arrow pointing right */
real_map['.'] = 'v'; /* should be arrow pointing down */
real_map['-'] = '^'; /* should be arrow pointing up */
real_map['h'] = '#'; /* should be board of squares */
real_map['i'] = '#'; /* should be lantern symbol */
real_map['0'] = '#'; /* should be solid square block */
/* these defaults were invented for ncurses */
real_map['p'] = '-'; /* should be scan line 3 */
real_map['r'] = '-'; /* should be scan line 7 */
real_map['y'] = '<'; /* should be less-than-or-equal-to */
real_map['z'] = '>'; /* should be greater-than-or-equal-to */
real_map['{'] = '*'; /* should be greek pi */
real_map['|'] = '!'; /* should be not-equal */
real_map['}'] = 'f'; /* should be pound-sterling symbol */
/* thick-line-drawing */
real_map['L'] = '+'; /* upper left corner */
real_map['M'] = '+'; /* lower left corner */
real_map['K'] = '+'; /* upper right corner */
real_map['J'] = '+'; /* lower right corner */
real_map['T'] = '+'; /* tee pointing left */
real_map['U'] = '+'; /* tee pointing right */
real_map['V'] = '+'; /* tee pointing up */
real_map['W'] = '+'; /* tee pointing down */
real_map['Q'] = '-'; /* horizontal line */
real_map['X'] = '|'; /* vertical line */
real_map['N'] = '+'; /* large plus or crossover */
/* double-line-drawing */
real_map['C'] = '+'; /* upper left corner */
real_map['D'] = '+'; /* lower left corner */
real_map['B'] = '+'; /* upper right corner */
real_map['A'] = '+'; /* lower right corner */
real_map['G'] = '+'; /* tee pointing left */
real_map['F'] = '+'; /* tee pointing right */
real_map['H'] = '+'; /* tee pointing up */
real_map['I'] = '+'; /* tee pointing down */
real_map['R'] = '-'; /* horizontal line */
real_map['Y'] = '|'; /* vertical line */
real_map['E'] = '+'; /* large plus or crossover */
#ifdef USE_TERM_DRIVER
CallDriver_2(SP_PARM, td_initacs, real_map, fake_map);
#else
if (ena_acs != NULL) {
NCURSES_PUTP2("ena_acs", ena_acs);
}
#if NCURSES_EXT_FUNCS && defined(enter_pc_charset_mode) && defined(exit_pc_charset_mode)
/*
* Linux console "supports" the "PC ROM" character set by the coincidence
* that smpch/rmpch and smacs/rmacs have the same values. ncurses has
* no codepage support (see SCO Merge for an example). Outside of the
* values defined in acsc, there are no definitions for the "PC ROM"
* character set (assumed by some applications to be codepage 437), but we
* allow those applications to use those codepoints.
*
* test/blue.c uses this feature.
*/
#define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b))
if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) &&
PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) {
size_t i;
for (i = 1; i < ACS_LEN; ++i) {
if (real_map[i] == 0) {
real_map[i] = (chtype) i;
if (real_map != fake_map) {
if (SP != 0)
SP->_screen_acs_map[i] = TRUE;
}
}
}
}
#endif
if (acs_chars != NULL) {
size_t i = 0;
size_t length = strlen(acs_chars);
while (i + 1 < length) {
if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) {
real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET;
T(("#%d real_map[%s] = %s",
(int) i,
_tracechar(UChar(acs_chars[i])),
_tracechtype(real_map[UChar(acs_chars[i])])));
if (SP != 0) {
SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE;
}
}
i += 2;
}
}
#ifdef TRACE
/* Show the equivalent mapping, noting if it does not match the
* given attribute, whether by re-ordering or duplication.
*/
if (USE_TRACEF(TRACE_CALLS)) {
size_t n, m;
char show[ACS_LEN * 2 + 1];
for (n = 1, m = 0; n < ACS_LEN; n++) {
if (real_map[n] != 0) {
show[m++] = (char) n;
show[m++] = (char) ChCharOf(real_map[n]);
}
}
show[m] = 0;
if (acs_chars == NULL || strcmp(acs_chars, show))
_tracef("%s acs_chars %s",
(acs_chars == NULL) ? "NULL" : "READ",
_nc_visbuf(acs_chars));
_tracef("%s acs_chars %s",
(acs_chars == NULL)
? "NULL"
: (strcmp(acs_chars, show)
? "DIFF"
: "SAME"),
_nc_visbuf(show));
_nc_unlock_global(tracef);
}
#endif /* TRACE */
#endif
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(void)
_nc_init_acs(void)
{
NCURSES_SP_NAME(_nc_init_acs) (CURRENT_SCREEN);
}
#endif
#if !NCURSES_WCWIDTH_GRAPHICS
NCURSES_EXPORT(int)
_nc_wacs_width(unsigned ch)
{
int result;
switch (ch) {
case 0x00a3: /* FALLTHRU - ncurses pound-sterling symbol */
case 0x00b0: /* FALLTHRU - VT100 degree symbol */
case 0x00b1: /* FALLTHRU - VT100 plus/minus */
case 0x00b7: /* FALLTHRU - VT100 bullet */
case 0x03c0: /* FALLTHRU - ncurses greek pi */
case 0x2190: /* FALLTHRU - Teletype arrow pointing left */
case 0x2191: /* FALLTHRU - Teletype arrow pointing up */
case 0x2192: /* FALLTHRU - Teletype arrow pointing right */
case 0x2193: /* FALLTHRU - Teletype arrow pointing down */
case 0x2260: /* FALLTHRU - ncurses not-equal */
case 0x2264: /* FALLTHRU - ncurses less-than-or-equal-to */
case 0x2265: /* FALLTHRU - ncurses greater-than-or-equal-to */
case 0x23ba: /* FALLTHRU - VT100 scan line 1 */
case 0x23bb: /* FALLTHRU - ncurses scan line 3 */
case 0x23bc: /* FALLTHRU - ncurses scan line 7 */
case 0x23bd: /* FALLTHRU - VT100 scan line 9 */
case 0x2500: /* FALLTHRU - VT100 horizontal line */
case 0x2501: /* FALLTHRU - thick horizontal line */
case 0x2502: /* FALLTHRU - VT100 vertical line */
case 0x2503: /* FALLTHRU - thick vertical line */
case 0x250c: /* FALLTHRU - VT100 upper left corner */
case 0x250f: /* FALLTHRU - thick upper left corner */
case 0x2510: /* FALLTHRU - VT100 upper right corner */
case 0x2513: /* FALLTHRU - thick upper right corner */
case 0x2514: /* FALLTHRU - VT100 lower left corner */
case 0x2517: /* FALLTHRU - thick lower left corner */
case 0x2518: /* FALLTHRU - VT100 lower right corner */
case 0x251b: /* FALLTHRU - thick lower right corner */
case 0x251c: /* FALLTHRU - VT100 tee pointing left */
case 0x2523: /* FALLTHRU - thick tee pointing left */
case 0x2524: /* FALLTHRU - VT100 tee pointing right */
case 0x252b: /* FALLTHRU - thick tee pointing right */
case 0x252c: /* FALLTHRU - VT100 tee pointing down */
case 0x2533: /* FALLTHRU - thick tee pointing down */
case 0x2534: /* FALLTHRU - VT100 tee pointing up */
case 0x253b: /* FALLTHRU - thick tee pointing up */
case 0x253c: /* FALLTHRU - VT100 large plus or crossover */
case 0x254b: /* FALLTHRU - thick large plus or crossover */
case 0x2550: /* FALLTHRU - double horizontal line */
case 0x2551: /* FALLTHRU - double vertical line */
case 0x2554: /* FALLTHRU - double upper left corner */
case 0x2557: /* FALLTHRU - double upper right corner */
case 0x255a: /* FALLTHRU - double lower left corner */
case 0x255d: /* FALLTHRU - double lower right corner */
case 0x2560: /* FALLTHRU - double tee pointing right */
case 0x2563: /* FALLTHRU - double tee pointing left */
case 0x2566: /* FALLTHRU - double tee pointing down */
case 0x2569: /* FALLTHRU - double tee pointing up */
case 0x256c: /* FALLTHRU - double large plus or crossover */
case 0x2592: /* FALLTHRU - VT100 checker board (stipple) */
case 0x25ae: /* FALLTHRU - Teletype solid square block */
case 0x25c6: /* FALLTHRU - VT100 diamond */
case 0x2603: /* FALLTHRU - Teletype lantern symbol */
result = 1;
break;
default:
result = wcwidth(ch);
break;
}
return result;
}
#endif /* !NCURSES_WCWIDTH_GRAPHICS */
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