1 /**************************************************************************** 2 * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. * 3 * * 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: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 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. * 22 * * 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 * 26 * authorization. * 27 ****************************************************************************/ 28 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 ****************************************************************************/ 34 35 #include <curses.priv.h> 36 #include <term.h> /* ena_acs, acs_chars */ 37 38 MODULE_ID("$Id: lib_acs.c,v 1.36 2008/08/16 19:22:55 tom Exp $") 39 40 #if BROKEN_LINKER || USE_REENTRANT 41 #define MyBuffer _nc_prescreen.real_acs_map 42 NCURSES_EXPORT_VAR(chtype *) 43 _nc_acs_map(void) 44 { 45 if (MyBuffer == 0) 46 MyBuffer = typeCalloc(chtype, ACS_LEN); 47 return MyBuffer; 48 } 49 #undef MyBuffer 50 #else 51 NCURSES_EXPORT_VAR(chtype) acs_map[ACS_LEN] = 52 { 53 0 54 }; 55 #endif 56 57 NCURSES_EXPORT(void) 58 _nc_init_acs(void) 59 { 60 chtype *fake_map = acs_map; 61 chtype *real_map = SP != 0 ? SP->_acs_map : fake_map; 62 int j; 63 64 T(("initializing ACS map")); 65 66 /* 67 * If we're using this from curses (rather than terminfo), we are storing 68 * the mapping information in the SCREEN struct so we can decide how to 69 * render it. 70 */ 71 if (real_map != fake_map) { 72 for (j = 1; j < ACS_LEN; ++j) { 73 real_map[j] = 0; 74 fake_map[j] = A_ALTCHARSET | j; 75 if (SP) 76 SP->_screen_acs_map[j] = FALSE; 77 } 78 } else { 79 for (j = 1; j < ACS_LEN; ++j) { 80 real_map[j] = 0; 81 } 82 } 83 84 /* 85 * Initializations for a UNIX-like multi-terminal environment. Use 86 * ASCII chars and count on the terminfo description to do better. 87 */ 88 real_map['l'] = '+'; /* should be upper left corner */ 89 real_map['m'] = '+'; /* should be lower left corner */ 90 real_map['k'] = '+'; /* should be upper right corner */ 91 real_map['j'] = '+'; /* should be lower right corner */ 92 real_map['u'] = '+'; /* should be tee pointing left */ 93 real_map['t'] = '+'; /* should be tee pointing right */ 94 real_map['v'] = '+'; /* should be tee pointing up */ 95 real_map['w'] = '+'; /* should be tee pointing down */ 96 real_map['q'] = '-'; /* should be horizontal line */ 97 real_map['x'] = '|'; /* should be vertical line */ 98 real_map['n'] = '+'; /* should be large plus or crossover */ 99 real_map['o'] = '~'; /* should be scan line 1 */ 100 real_map['s'] = '_'; /* should be scan line 9 */ 101 real_map['`'] = '+'; /* should be diamond */ 102 real_map['a'] = ':'; /* should be checker board (stipple) */ 103 real_map['f'] = '\''; /* should be degree symbol */ 104 real_map['g'] = '#'; /* should be plus/minus */ 105 real_map['~'] = 'o'; /* should be bullet */ 106 real_map[','] = '<'; /* should be arrow pointing left */ 107 real_map['+'] = '>'; /* should be arrow pointing right */ 108 real_map['.'] = 'v'; /* should be arrow pointing down */ 109 real_map['-'] = '^'; /* should be arrow pointing up */ 110 real_map['h'] = '#'; /* should be board of squares */ 111 real_map['i'] = '#'; /* should be lantern symbol */ 112 real_map['0'] = '#'; /* should be solid square block */ 113 /* these defaults were invented for ncurses */ 114 real_map['p'] = '-'; /* should be scan line 3 */ 115 real_map['r'] = '-'; /* should be scan line 7 */ 116 real_map['y'] = '<'; /* should be less-than-or-equal-to */ 117 real_map['z'] = '>'; /* should be greater-than-or-equal-to */ 118 real_map['{'] = '*'; /* should be greek pi */ 119 real_map['|'] = '!'; /* should be not-equal */ 120 real_map['}'] = 'f'; /* should be pound-sterling symbol */ 121 122 if (ena_acs != NULL) { 123 TPUTS_TRACE("ena_acs"); 124 putp(ena_acs); 125 } 126 #if NCURSES_EXT_FUNCS 127 /* 128 * Linux console "supports" the "PC ROM" character set by the coincidence 129 * that smpch/rmpch and smacs/rmacs have the same values. ncurses has 130 * no codepage support (see SCO Merge for an example). Outside of the 131 * values defined in acsc, there are no definitions for the "PC ROM" 132 * character set (assumed by some applications to be codepage 437), but we 133 * allow those applications to use those codepoints. 134 * 135 * test/blue.c uses this feature. 136 */ 137 #define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b)) 138 if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) && 139 PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) { 140 size_t i; 141 for (i = 1; i < ACS_LEN; ++i) { 142 if (real_map[i] == 0) { 143 real_map[i] = i; 144 if (real_map != fake_map) { 145 if (SP != 0) 146 SP->_screen_acs_map[i] = TRUE; 147 } 148 } 149 } 150 } 151 #endif 152 153 if (acs_chars != NULL) { 154 size_t i = 0; 155 size_t length = strlen(acs_chars); 156 157 while (i + 1 < length) { 158 if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) { 159 real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET; 160 if (SP != 0) 161 SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE; 162 } 163 i += 2; 164 } 165 } 166 #ifdef TRACE 167 /* Show the equivalent mapping, noting if it does not match the 168 * given attribute, whether by re-ordering or duplication. 169 */ 170 if (USE_TRACEF(TRACE_CALLS)) { 171 size_t n, m; 172 char show[ACS_LEN * 2 + 1]; 173 for (n = 1, m = 0; n < ACS_LEN; n++) { 174 if (real_map[n] != 0) { 175 show[m++] = (char) n; 176 show[m++] = (char) ChCharOf(real_map[n]); 177 } 178 } 179 show[m] = 0; 180 if (acs_chars == NULL || strcmp(acs_chars, show)) 181 _tracef("%s acs_chars %s", 182 (acs_chars == NULL) ? "NULL" : "READ", 183 _nc_visbuf(acs_chars)); 184 _tracef("%s acs_chars %s", 185 (acs_chars == NULL) 186 ? "NULL" 187 : (strcmp(acs_chars, show) 188 ? "DIFF" 189 : "SAME"), 190 _nc_visbuf(show)); 191 _nc_unlock_global(tracef); 192 } 193 #endif /* TRACE */ 194 } 195