/**************************************************************************** * Copyright (c) 1998-2007,2008 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 * ****************************************************************************/ #include <curses.priv.h> #include <term.h> /* ena_acs, acs_chars */ MODULE_ID("$Id: lib_acs.c,v 1.36 2008/08/16 19:22:55 tom Exp $") #if BROKEN_LINKER || USE_REENTRANT #define MyBuffer _nc_prescreen.real_acs_map NCURSES_EXPORT_VAR(chtype *) _nc_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 NCURSES_EXPORT(void) _nc_init_acs(void) { chtype *fake_map = acs_map; chtype *real_map = SP != 0 ? SP->_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 | j; if (SP) SP->_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 */ if (ena_acs != NULL) { TPUTS_TRACE("ena_acs"); putp(ena_acs); } #if NCURSES_EXT_FUNCS /* * 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] = 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; 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 */ }