1 /**************************************************************************** 2 * Copyright (c) 1998-2013,2014 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 * and: Juergen Pfeifer 2008 * 34 ****************************************************************************/ 35 36 #include <curses.priv.h> 37 38 #ifndef CUR 39 #define CUR SP_TERMTYPE 40 #endif 41 42 MODULE_ID("$Id: lib_acs.c,v 1.45 2014/03/08 20:32:59 tom Exp $") 43 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) 48 { 49 if (MyBuffer == 0) 50 MyBuffer = typeCalloc(chtype, ACS_LEN); 51 return MyBuffer; 52 } 53 #undef MyBuffer 54 #else 55 NCURSES_EXPORT_VAR (chtype) acs_map[ACS_LEN] = 56 { 57 0 58 }; 59 #endif 60 61 #ifdef USE_TERM_DRIVER 62 NCURSES_EXPORT(chtype) 63 NCURSES_SP_NAME(_nc_acs_char) (NCURSES_SP_DCLx int c) 64 { 65 chtype *map; 66 if (c < 0 || c >= ACS_LEN) 67 return (chtype) 0; 68 map = (SP_PARM != 0) ? SP_PARM->_acs_map : 69 #if BROKEN_LINKER || USE_REENTRANT 70 _nc_prescreen.real_acs_map 71 #else 72 acs_map 73 #endif 74 ; 75 return map[c]; 76 } 77 #endif /* USE_TERM_DRIVER */ 78 79 NCURSES_EXPORT(void) 80 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_DCL0) 81 { 82 chtype *fake_map = acs_map; 83 chtype *real_map = SP_PARM != 0 ? SP_PARM->_acs_map : fake_map; 84 int j; 85 86 T(("initializing ACS map")); 87 88 /* 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 91 * render it. 92 */ 93 if (real_map != fake_map) { 94 for (j = 1; j < ACS_LEN; ++j) { 95 real_map[j] = 0; 96 fake_map[j] = A_ALTCHARSET | (chtype) j; 97 if (SP_PARM) 98 SP_PARM->_screen_acs_map[j] = FALSE; 99 } 100 } else { 101 for (j = 1; j < ACS_LEN; ++j) { 102 real_map[j] = 0; 103 } 104 } 105 106 /* 107 * Initializations for a UNIX-like multi-terminal environment. Use 108 * ASCII chars and count on the terminfo description to do better. 109 */ 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 */ 143 /* thick-line-drawing */ 144 real_map['L'] = '+'; /* upper left corner */ 145 real_map['M'] = '+'; /* lower left corner */ 146 real_map['K'] = '+'; /* upper right corner */ 147 real_map['J'] = '+'; /* lower right corner */ 148 real_map['T'] = '+'; /* tee pointing left */ 149 real_map['U'] = '+'; /* tee pointing right */ 150 real_map['V'] = '+'; /* tee pointing up */ 151 real_map['W'] = '+'; /* tee pointing down */ 152 real_map['Q'] = '-'; /* horizontal line */ 153 real_map['X'] = '|'; /* vertical line */ 154 real_map['N'] = '+'; /* large plus or crossover */ 155 /* double-line-drawing */ 156 real_map['C'] = '+'; /* upper left corner */ 157 real_map['D'] = '+'; /* lower left corner */ 158 real_map['B'] = '+'; /* upper right corner */ 159 real_map['A'] = '+'; /* lower right corner */ 160 real_map['G'] = '+'; /* tee pointing left */ 161 real_map['F'] = '+'; /* tee pointing right */ 162 real_map['H'] = '+'; /* tee pointing up */ 163 real_map['I'] = '+'; /* tee pointing down */ 164 real_map['R'] = '-'; /* horizontal line */ 165 real_map['Y'] = '|'; /* vertical line */ 166 real_map['E'] = '+'; /* large plus or crossover */ 167 168 #ifdef USE_TERM_DRIVER 169 CallDriver_2(SP_PARM, td_initacs, real_map, fake_map); 170 #else 171 if (ena_acs != NULL) { 172 NCURSES_PUTP2("ena_acs", ena_acs); 173 } 174 #if NCURSES_EXT_FUNCS 175 /* 176 * Linux console "supports" the "PC ROM" character set by the coincidence 177 * that smpch/rmpch and smacs/rmacs have the same values. ncurses has 178 * no codepage support (see SCO Merge for an example). Outside of the 179 * values defined in acsc, there are no definitions for the "PC ROM" 180 * character set (assumed by some applications to be codepage 437), but we 181 * allow those applications to use those codepoints. 182 * 183 * test/blue.c uses this feature. 184 */ 185 #define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b)) 186 if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) && 187 PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) { 188 size_t i; 189 for (i = 1; i < ACS_LEN; ++i) { 190 if (real_map[i] == 0) { 191 real_map[i] = (chtype) i; 192 if (real_map != fake_map) { 193 if (SP != 0) 194 SP->_screen_acs_map[i] = TRUE; 195 } 196 } 197 } 198 } 199 #endif 200 201 if (acs_chars != NULL) { 202 size_t i = 0; 203 size_t length = strlen(acs_chars); 204 205 while (i + 1 < length) { 206 if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) { 207 real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET; 208 if (SP != 0) 209 SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE; 210 } 211 i += 2; 212 } 213 } 214 #ifdef TRACE 215 /* Show the equivalent mapping, noting if it does not match the 216 * given attribute, whether by re-ordering or duplication. 217 */ 218 if (USE_TRACEF(TRACE_CALLS)) { 219 size_t n, m; 220 char show[ACS_LEN * 2 + 1]; 221 for (n = 1, m = 0; n < ACS_LEN; n++) { 222 if (real_map[n] != 0) { 223 show[m++] = (char) n; 224 show[m++] = (char) ChCharOf(real_map[n]); 225 } 226 } 227 show[m] = 0; 228 if (acs_chars == NULL || strcmp(acs_chars, show)) 229 _tracef("%s acs_chars %s", 230 (acs_chars == NULL) ? "NULL" : "READ", 231 _nc_visbuf(acs_chars)); 232 _tracef("%s acs_chars %s", 233 (acs_chars == NULL) 234 ? "NULL" 235 : (strcmp(acs_chars, show) 236 ? "DIFF" 237 : "SAME"), 238 _nc_visbuf(show)); 239 _nc_unlock_global(tracef); 240 } 241 #endif /* TRACE */ 242 #endif 243 } 244 245 #if NCURSES_SP_FUNCS 246 NCURSES_EXPORT(void) 247 _nc_init_acs(void) 248 { 249 NCURSES_SP_NAME(_nc_init_acs) (CURRENT_SCREEN); 250 } 251 #endif 252