1 /****************************************************************************
2 * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. *
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 *
7 * without limitation the rights to use, copy, modify, merge, publish, *
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: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
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 *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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 *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 * and: Juergen Pfeifer 2008 *
34 ****************************************************************************/
36 #include <curses.priv.h>
39 #define CUR SP_TERMTYPE
42 MODULE_ID("$Id: lib_acs.c,v 1.40 2009/06/06 18:08:04 tom Exp $")
44 #if BROKEN_LINKER || USE_REENTRANT
45 #define MyBuffer _nc_prescreen.real_acs_map
46 NCURSES_EXPORT(chtype *)
47 NCURSES_PUBLIC_VAR(acs_map) (void)
50 MyBuffer = typeCalloc(chtype, ACS_LEN);
55 NCURSES_EXPORT_VAR (chtype) acs_map[ACS_LEN] =
61 #ifdef USE_TERM_DRIVER
62 NCURSES_EXPORT(chtype)
63 NCURSES_SP_NAME(_nc_acs_char) (NCURSES_SP_DCLx int c)
66 if (c < 0 || c >= ACS_LEN)
68 map = (SP_PARM != 0) ? SP_PARM->_acs_map :
69 #if BROKEN_LINKER || USE_REENTRANT
70 _nc_prescreen.real_acs_map
77 #endif /* USE_TERM_DRIVER */
80 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_DCL0)
82 chtype *fake_map = acs_map;
83 chtype *real_map = SP_PARM != 0 ? SP_PARM->_acs_map : fake_map;
86 T(("initializing ACS map"));
89 * If we're using this from curses (rather than terminfo), we are storing
90 * the mapping information in the SCREEN struct so we can decide how to
93 if (real_map != fake_map) {
94 for (j = 1; j < ACS_LEN; ++j) {
96 fake_map[j] = A_ALTCHARSET | j;
98 SP_PARM->_screen_acs_map[j] = FALSE;
101 for (j = 1; j < ACS_LEN; ++j) {
107 * Initializations for a UNIX-like multi-terminal environment. Use
108 * ASCII chars and count on the terminfo description to do better.
110 real_map['l'] = '+'; /* should be upper left corner */
111 real_map['m'] = '+'; /* should be lower left corner */
112 real_map['k'] = '+'; /* should be upper right corner */
113 real_map['j'] = '+'; /* should be lower right corner */
114 real_map['u'] = '+'; /* should be tee pointing left */
115 real_map['t'] = '+'; /* should be tee pointing right */
116 real_map['v'] = '+'; /* should be tee pointing up */
117 real_map['w'] = '+'; /* should be tee pointing down */
118 real_map['q'] = '-'; /* should be horizontal line */
119 real_map['x'] = '|'; /* should be vertical line */
120 real_map['n'] = '+'; /* should be large plus or crossover */
121 real_map['o'] = '~'; /* should be scan line 1 */
122 real_map['s'] = '_'; /* should be scan line 9 */
123 real_map['`'] = '+'; /* should be diamond */
124 real_map['a'] = ':'; /* should be checker board (stipple) */
125 real_map['f'] = '\''; /* should be degree symbol */
126 real_map['g'] = '#'; /* should be plus/minus */
127 real_map['~'] = 'o'; /* should be bullet */
128 real_map[','] = '<'; /* should be arrow pointing left */
129 real_map['+'] = '>'; /* should be arrow pointing right */
130 real_map['.'] = 'v'; /* should be arrow pointing down */
131 real_map['-'] = '^'; /* should be arrow pointing up */
132 real_map['h'] = '#'; /* should be board of squares */
133 real_map['i'] = '#'; /* should be lantern symbol */
134 real_map['0'] = '#'; /* should be solid square block */
135 /* these defaults were invented for ncurses */
136 real_map['p'] = '-'; /* should be scan line 3 */
137 real_map['r'] = '-'; /* should be scan line 7 */
138 real_map['y'] = '<'; /* should be less-than-or-equal-to */
139 real_map['z'] = '>'; /* should be greater-than-or-equal-to */
140 real_map['{'] = '*'; /* should be greek pi */
141 real_map['|'] = '!'; /* should be not-equal */
142 real_map['}'] = 'f'; /* should be pound-sterling symbol */
144 #ifdef USE_TERM_DRIVER
145 CallDriver_2(SP_PARM, initacs, real_map, fake_map);
147 if (ena_acs != NULL) {
148 TPUTS_TRACE("ena_acs");
151 #if NCURSES_EXT_FUNCS
153 * Linux console "supports" the "PC ROM" character set by the coincidence
154 * that smpch/rmpch and smacs/rmacs have the same values. ncurses has
155 * no codepage support (see SCO Merge for an example). Outside of the
156 * values defined in acsc, there are no definitions for the "PC ROM"
157 * character set (assumed by some applications to be codepage 437), but we
158 * allow those applications to use those codepoints.
160 * test/blue.c uses this feature.
162 #define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b))
163 if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) &&
164 PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) {
166 for (i = 1; i < ACS_LEN; ++i) {
167 if (real_map[i] == 0) {
169 if (real_map != fake_map) {
171 SP->_screen_acs_map[i] = TRUE;
178 if (acs_chars != NULL) {
180 size_t length = strlen(acs_chars);
182 while (i + 1 < length) {
183 if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) {
184 real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET;
186 SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE;
192 /* Show the equivalent mapping, noting if it does not match the
193 * given attribute, whether by re-ordering or duplication.
195 if (USE_TRACEF(TRACE_CALLS)) {
197 char show[ACS_LEN * 2 + 1];
198 for (n = 1, m = 0; n < ACS_LEN; n++) {
199 if (real_map[n] != 0) {
200 show[m++] = (char) n;
201 show[m++] = (char) ChCharOf(real_map[n]);
205 if (acs_chars == NULL || strcmp(acs_chars, show))
206 _tracef("%s acs_chars %s",
207 (acs_chars == NULL) ? "NULL" : "READ",
208 _nc_visbuf(acs_chars));
209 _tracef("%s acs_chars %s",
212 : (strcmp(acs_chars, show)
216 _nc_unlock_global(tracef);
226 NCURSES_SP_NAME(_nc_init_acs) (CURRENT_SCREEN);