1 /* $OpenBSD: lib_acs.c,v 1.5 2010/01/12 23:22:06 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 * and: Thomas E. Dickey 1996-on * 35 ****************************************************************************/ 36 37 #include <curses.priv.h> 38 #include <term.h> /* ena_acs, acs_chars */ 39 40 MODULE_ID("$Id: lib_acs.c,v 1.5 2010/01/12 23:22:06 nicm Exp $") 41 42 #if BROKEN_LINKER || USE_REENTRANT 43 #define MyBuffer _nc_prescreen.real_acs_map 44 NCURSES_EXPORT_VAR(chtype *) 45 _nc_acs_map(void) 46 { 47 if (MyBuffer == 0) 48 MyBuffer = typeCalloc(chtype, ACS_LEN); 49 return MyBuffer; 50 } 51 #undef MyBuffer 52 #else 53 NCURSES_EXPORT_VAR(chtype) acs_map[ACS_LEN] = 54 { 55 0 56 }; 57 #endif 58 59 NCURSES_EXPORT(void) 60 _nc_init_acs(void) 61 { 62 chtype *fake_map = acs_map; 63 chtype *real_map = SP != 0 ? SP->_acs_map : fake_map; 64 int j; 65 66 T(("initializing ACS map")); 67 68 /* 69 * If we're using this from curses (rather than terminfo), we are storing 70 * the mapping information in the SCREEN struct so we can decide how to 71 * render it. 72 */ 73 if (real_map != fake_map) { 74 for (j = 1; j < ACS_LEN; ++j) { 75 real_map[j] = 0; 76 fake_map[j] = A_ALTCHARSET | j; 77 if (SP) 78 SP->_screen_acs_map[j] = FALSE; 79 } 80 } else { 81 for (j = 1; j < ACS_LEN; ++j) { 82 real_map[j] = 0; 83 } 84 } 85 86 /* 87 * Initializations for a UNIX-like multi-terminal environment. Use 88 * ASCII chars and count on the terminfo description to do better. 89 */ 90 real_map['l'] = '+'; /* should be upper left corner */ 91 real_map['m'] = '+'; /* should be lower left corner */ 92 real_map['k'] = '+'; /* should be upper right corner */ 93 real_map['j'] = '+'; /* should be lower right corner */ 94 real_map['u'] = '+'; /* should be tee pointing left */ 95 real_map['t'] = '+'; /* should be tee pointing right */ 96 real_map['v'] = '+'; /* should be tee pointing up */ 97 real_map['w'] = '+'; /* should be tee pointing down */ 98 real_map['q'] = '-'; /* should be horizontal line */ 99 real_map['x'] = '|'; /* should be vertical line */ 100 real_map['n'] = '+'; /* should be large plus or crossover */ 101 real_map['o'] = '~'; /* should be scan line 1 */ 102 real_map['s'] = '_'; /* should be scan line 9 */ 103 real_map['`'] = '+'; /* should be diamond */ 104 real_map['a'] = ':'; /* should be checker board (stipple) */ 105 real_map['f'] = '\''; /* should be degree symbol */ 106 real_map['g'] = '#'; /* should be plus/minus */ 107 real_map['~'] = 'o'; /* should be bullet */ 108 real_map[','] = '<'; /* should be arrow pointing left */ 109 real_map['+'] = '>'; /* should be arrow pointing right */ 110 real_map['.'] = 'v'; /* should be arrow pointing down */ 111 real_map['-'] = '^'; /* should be arrow pointing up */ 112 real_map['h'] = '#'; /* should be board of squares */ 113 real_map['i'] = '#'; /* should be lantern symbol */ 114 real_map['0'] = '#'; /* should be solid square block */ 115 /* these defaults were invented for ncurses */ 116 real_map['p'] = '-'; /* should be scan line 3 */ 117 real_map['r'] = '-'; /* should be scan line 7 */ 118 real_map['y'] = '<'; /* should be less-than-or-equal-to */ 119 real_map['z'] = '>'; /* should be greater-than-or-equal-to */ 120 real_map['{'] = '*'; /* should be greek pi */ 121 real_map['|'] = '!'; /* should be not-equal */ 122 real_map['}'] = 'f'; /* should be pound-sterling symbol */ 123 124 if (ena_acs != NULL) { 125 TPUTS_TRACE("ena_acs"); 126 putp(ena_acs); 127 } 128 #if NCURSES_EXT_FUNCS 129 /* 130 * Linux console "supports" the "PC ROM" character set by the coincidence 131 * that smpch/rmpch and smacs/rmacs have the same values. ncurses has 132 * no codepage support (see SCO Merge for an example). Outside of the 133 * values defined in acsc, there are no definitions for the "PC ROM" 134 * character set (assumed by some applications to be codepage 437), but we 135 * allow those applications to use those codepoints. 136 * 137 * test/blue.c uses this feature. 138 */ 139 #define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b)) 140 if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) && 141 PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) { 142 size_t i; 143 for (i = 1; i < ACS_LEN; ++i) { 144 if (real_map[i] == 0) { 145 real_map[i] = i; 146 if (real_map != fake_map) { 147 if (SP != 0) 148 SP->_screen_acs_map[i] = TRUE; 149 } 150 } 151 } 152 } 153 #endif 154 155 if (acs_chars != NULL) { 156 size_t i = 0; 157 size_t length = strlen(acs_chars); 158 159 while (i + 1 < length) { 160 if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) { 161 real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET; 162 if (SP != 0) 163 SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE; 164 } 165 i += 2; 166 } 167 } 168 #ifdef TRACE 169 /* Show the equivalent mapping, noting if it does not match the 170 * given attribute, whether by re-ordering or duplication. 171 */ 172 if (USE_TRACEF(TRACE_CALLS)) { 173 size_t n, m; 174 char show[ACS_LEN * 2 + 1]; 175 for (n = 1, m = 0; n < ACS_LEN; n++) { 176 if (real_map[n] != 0) { 177 show[m++] = (char) n; 178 show[m++] = (char) ChCharOf(real_map[n]); 179 } 180 } 181 show[m] = 0; 182 if (acs_chars == NULL || strcmp(acs_chars, show)) 183 _tracef("%s acs_chars %s", 184 (acs_chars == NULL) ? "NULL" : "READ", 185 _nc_visbuf(acs_chars)); 186 _tracef("%s acs_chars %s", 187 (acs_chars == NULL) 188 ? "NULL" 189 : (strcmp(acs_chars, show) 190 ? "DIFF" 191 : "SAME"), 192 _nc_visbuf(show)); 193 _nc_unlock_global(tracef); 194 } 195 #endif /* TRACE */ 196 } 197