1 /**************************************************************************** 2 * Copyright 2018-2019,2020 Thomas E. Dickey * 3 * Copyright 1998-2014,2017 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 * and: Thomas E. Dickey 1996-on * 34 * and: Juergen Pfeifer 2008 * 35 ****************************************************************************/ 36 37 #include <curses.priv.h> 38 39 #ifndef CUR 40 #define CUR SP_TERMTYPE 41 #endif 42 43 MODULE_ID("$Id: lib_acs.c,v 1.50 2020/02/02 23:34:34 tom Exp $") 44 45 #if BROKEN_LINKER || USE_REENTRANT 46 #define MyBuffer _nc_prescreen.real_acs_map 47 NCURSES_EXPORT(chtype *) 48 NCURSES_PUBLIC_VAR(acs_map) (void) 49 { 50 if (MyBuffer == 0) 51 MyBuffer = typeCalloc(chtype, ACS_LEN); 52 return MyBuffer; 53 } 54 #undef MyBuffer 55 #else 56 NCURSES_EXPORT_VAR (chtype) acs_map[ACS_LEN] = 57 { 58 0 59 }; 60 #endif 61 62 #ifdef USE_TERM_DRIVER 63 NCURSES_EXPORT(chtype) 64 NCURSES_SP_NAME(_nc_acs_char) (NCURSES_SP_DCLx int c) 65 { 66 chtype *map; 67 if (c < 0 || c >= ACS_LEN) 68 return (chtype) 0; 69 map = (SP_PARM != 0) ? SP_PARM->_acs_map : 70 #if BROKEN_LINKER || USE_REENTRANT 71 _nc_prescreen.real_acs_map 72 #else 73 acs_map 74 #endif 75 ; 76 return map[c]; 77 } 78 #endif /* USE_TERM_DRIVER */ 79 80 NCURSES_EXPORT(void) 81 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_DCL0) 82 { 83 chtype *fake_map = acs_map; 84 chtype *real_map = SP_PARM != 0 ? SP_PARM->_acs_map : fake_map; 85 int j; 86 87 T(("initializing ACS map")); 88 89 /* 90 * If we're using this from curses (rather than terminfo), we are storing 91 * the mapping information in the SCREEN struct so we can decide how to 92 * render it. 93 */ 94 if (real_map != fake_map) { 95 for (j = 1; j < ACS_LEN; ++j) { 96 real_map[j] = 0; 97 fake_map[j] = A_ALTCHARSET | (chtype) j; 98 if (SP_PARM) 99 SP_PARM->_screen_acs_map[j] = FALSE; 100 } 101 } else { 102 for (j = 1; j < ACS_LEN; ++j) { 103 real_map[j] = 0; 104 } 105 } 106 107 /* 108 * Initializations for a UNIX-like multi-terminal environment. Use 109 * ASCII chars and count on the terminfo description to do better. 110 */ 111 real_map['l'] = '+'; /* should be upper left corner */ 112 real_map['m'] = '+'; /* should be lower left corner */ 113 real_map['k'] = '+'; /* should be upper right corner */ 114 real_map['j'] = '+'; /* should be lower right corner */ 115 real_map['u'] = '+'; /* should be tee pointing left */ 116 real_map['t'] = '+'; /* should be tee pointing right */ 117 real_map['v'] = '+'; /* should be tee pointing up */ 118 real_map['w'] = '+'; /* should be tee pointing down */ 119 real_map['q'] = '-'; /* should be horizontal line */ 120 real_map['x'] = '|'; /* should be vertical line */ 121 real_map['n'] = '+'; /* should be large plus or crossover */ 122 real_map['o'] = '~'; /* should be scan line 1 */ 123 real_map['s'] = '_'; /* should be scan line 9 */ 124 real_map['`'] = '+'; /* should be diamond */ 125 real_map['a'] = ':'; /* should be checker board (stipple) */ 126 real_map['f'] = '\''; /* should be degree symbol */ 127 real_map['g'] = '#'; /* should be plus/minus */ 128 real_map['~'] = 'o'; /* should be bullet */ 129 real_map[','] = '<'; /* should be arrow pointing left */ 130 real_map['+'] = '>'; /* should be arrow pointing right */ 131 real_map['.'] = 'v'; /* should be arrow pointing down */ 132 real_map['-'] = '^'; /* should be arrow pointing up */ 133 real_map['h'] = '#'; /* should be board of squares */ 134 real_map['i'] = '#'; /* should be lantern symbol */ 135 real_map['0'] = '#'; /* should be solid square block */ 136 /* these defaults were invented for ncurses */ 137 real_map['p'] = '-'; /* should be scan line 3 */ 138 real_map['r'] = '-'; /* should be scan line 7 */ 139 real_map['y'] = '<'; /* should be less-than-or-equal-to */ 140 real_map['z'] = '>'; /* should be greater-than-or-equal-to */ 141 real_map['{'] = '*'; /* should be greek pi */ 142 real_map['|'] = '!'; /* should be not-equal */ 143 real_map['}'] = 'f'; /* should be pound-sterling symbol */ 144 /* thick-line-drawing */ 145 real_map['L'] = '+'; /* upper left corner */ 146 real_map['M'] = '+'; /* lower left corner */ 147 real_map['K'] = '+'; /* upper right corner */ 148 real_map['J'] = '+'; /* lower right corner */ 149 real_map['T'] = '+'; /* tee pointing left */ 150 real_map['U'] = '+'; /* tee pointing right */ 151 real_map['V'] = '+'; /* tee pointing up */ 152 real_map['W'] = '+'; /* tee pointing down */ 153 real_map['Q'] = '-'; /* horizontal line */ 154 real_map['X'] = '|'; /* vertical line */ 155 real_map['N'] = '+'; /* large plus or crossover */ 156 /* double-line-drawing */ 157 real_map['C'] = '+'; /* upper left corner */ 158 real_map['D'] = '+'; /* lower left corner */ 159 real_map['B'] = '+'; /* upper right corner */ 160 real_map['A'] = '+'; /* lower right corner */ 161 real_map['G'] = '+'; /* tee pointing left */ 162 real_map['F'] = '+'; /* tee pointing right */ 163 real_map['H'] = '+'; /* tee pointing up */ 164 real_map['I'] = '+'; /* tee pointing down */ 165 real_map['R'] = '-'; /* horizontal line */ 166 real_map['Y'] = '|'; /* vertical line */ 167 real_map['E'] = '+'; /* large plus or crossover */ 168 169 #ifdef USE_TERM_DRIVER 170 CallDriver_2(SP_PARM, td_initacs, real_map, fake_map); 171 #else 172 if (ena_acs != NULL) { 173 NCURSES_PUTP2("ena_acs", ena_acs); 174 } 175 #if NCURSES_EXT_FUNCS && defined(enter_pc_charset_mode) && defined(exit_pc_charset_mode) 176 /* 177 * Linux console "supports" the "PC ROM" character set by the coincidence 178 * that smpch/rmpch and smacs/rmacs have the same values. ncurses has 179 * no codepage support (see SCO Merge for an example). Outside of the 180 * values defined in acsc, there are no definitions for the "PC ROM" 181 * character set (assumed by some applications to be codepage 437), but we 182 * allow those applications to use those codepoints. 183 * 184 * test/blue.c uses this feature. 185 */ 186 #define PCH_KLUDGE(a,b) (a != 0 && b != 0 && !strcmp(a,b)) 187 if (PCH_KLUDGE(enter_pc_charset_mode, enter_alt_charset_mode) && 188 PCH_KLUDGE(exit_pc_charset_mode, exit_alt_charset_mode)) { 189 size_t i; 190 for (i = 1; i < ACS_LEN; ++i) { 191 if (real_map[i] == 0) { 192 real_map[i] = (chtype) i; 193 if (real_map != fake_map) { 194 if (SP != 0) 195 SP->_screen_acs_map[i] = TRUE; 196 } 197 } 198 } 199 } 200 #endif 201 202 if (acs_chars != NULL) { 203 size_t i = 0; 204 size_t length = strlen(acs_chars); 205 206 while (i + 1 < length) { 207 if (acs_chars[i] != 0 && UChar(acs_chars[i]) < ACS_LEN) { 208 real_map[UChar(acs_chars[i])] = UChar(acs_chars[i + 1]) | A_ALTCHARSET; 209 T(("#%d real_map[%s] = %s", 210 (int) i, 211 _tracechar(UChar(acs_chars[i])), 212 _tracechtype(real_map[UChar(acs_chars[i])]))); 213 if (SP != 0) { 214 SP->_screen_acs_map[UChar(acs_chars[i])] = TRUE; 215 } 216 } 217 i += 2; 218 } 219 } 220 #ifdef TRACE 221 /* Show the equivalent mapping, noting if it does not match the 222 * given attribute, whether by re-ordering or duplication. 223 */ 224 if (USE_TRACEF(TRACE_CALLS)) { 225 size_t n, m; 226 char show[ACS_LEN * 2 + 1]; 227 for (n = 1, m = 0; n < ACS_LEN; n++) { 228 if (real_map[n] != 0) { 229 show[m++] = (char) n; 230 show[m++] = (char) ChCharOf(real_map[n]); 231 } 232 } 233 show[m] = 0; 234 if (acs_chars == NULL || strcmp(acs_chars, show)) 235 _tracef("%s acs_chars %s", 236 (acs_chars == NULL) ? "NULL" : "READ", 237 _nc_visbuf(acs_chars)); 238 _tracef("%s acs_chars %s", 239 (acs_chars == NULL) 240 ? "NULL" 241 : (strcmp(acs_chars, show) 242 ? "DIFF" 243 : "SAME"), 244 _nc_visbuf(show)); 245 _nc_unlock_global(tracef); 246 } 247 #endif /* TRACE */ 248 #endif 249 } 250 251 #if NCURSES_SP_FUNCS 252 NCURSES_EXPORT(void) 253 _nc_init_acs(void) 254 { 255 NCURSES_SP_NAME(_nc_init_acs) (CURRENT_SCREEN); 256 } 257 #endif 258 259 #if !NCURSES_WCWIDTH_GRAPHICS 260 NCURSES_EXPORT(int) 261 _nc_wacs_width(unsigned ch) 262 { 263 int result; 264 switch (ch) { 265 case 0x00a3: /* FALLTHRU - ncurses pound-sterling symbol */ 266 case 0x00b0: /* FALLTHRU - VT100 degree symbol */ 267 case 0x00b1: /* FALLTHRU - VT100 plus/minus */ 268 case 0x00b7: /* FALLTHRU - VT100 bullet */ 269 case 0x03c0: /* FALLTHRU - ncurses greek pi */ 270 case 0x2190: /* FALLTHRU - Teletype arrow pointing left */ 271 case 0x2191: /* FALLTHRU - Teletype arrow pointing up */ 272 case 0x2192: /* FALLTHRU - Teletype arrow pointing right */ 273 case 0x2193: /* FALLTHRU - Teletype arrow pointing down */ 274 case 0x2260: /* FALLTHRU - ncurses not-equal */ 275 case 0x2264: /* FALLTHRU - ncurses less-than-or-equal-to */ 276 case 0x2265: /* FALLTHRU - ncurses greater-than-or-equal-to */ 277 case 0x23ba: /* FALLTHRU - VT100 scan line 1 */ 278 case 0x23bb: /* FALLTHRU - ncurses scan line 3 */ 279 case 0x23bc: /* FALLTHRU - ncurses scan line 7 */ 280 case 0x23bd: /* FALLTHRU - VT100 scan line 9 */ 281 case 0x2500: /* FALLTHRU - VT100 horizontal line */ 282 case 0x2501: /* FALLTHRU - thick horizontal line */ 283 case 0x2502: /* FALLTHRU - VT100 vertical line */ 284 case 0x2503: /* FALLTHRU - thick vertical line */ 285 case 0x250c: /* FALLTHRU - VT100 upper left corner */ 286 case 0x250f: /* FALLTHRU - thick upper left corner */ 287 case 0x2510: /* FALLTHRU - VT100 upper right corner */ 288 case 0x2513: /* FALLTHRU - thick upper right corner */ 289 case 0x2514: /* FALLTHRU - VT100 lower left corner */ 290 case 0x2517: /* FALLTHRU - thick lower left corner */ 291 case 0x2518: /* FALLTHRU - VT100 lower right corner */ 292 case 0x251b: /* FALLTHRU - thick lower right corner */ 293 case 0x251c: /* FALLTHRU - VT100 tee pointing left */ 294 case 0x2523: /* FALLTHRU - thick tee pointing left */ 295 case 0x2524: /* FALLTHRU - VT100 tee pointing right */ 296 case 0x252b: /* FALLTHRU - thick tee pointing right */ 297 case 0x252c: /* FALLTHRU - VT100 tee pointing down */ 298 case 0x2533: /* FALLTHRU - thick tee pointing down */ 299 case 0x2534: /* FALLTHRU - VT100 tee pointing up */ 300 case 0x253b: /* FALLTHRU - thick tee pointing up */ 301 case 0x253c: /* FALLTHRU - VT100 large plus or crossover */ 302 case 0x254b: /* FALLTHRU - thick large plus or crossover */ 303 case 0x2550: /* FALLTHRU - double horizontal line */ 304 case 0x2551: /* FALLTHRU - double vertical line */ 305 case 0x2554: /* FALLTHRU - double upper left corner */ 306 case 0x2557: /* FALLTHRU - double upper right corner */ 307 case 0x255a: /* FALLTHRU - double lower left corner */ 308 case 0x255d: /* FALLTHRU - double lower right corner */ 309 case 0x2560: /* FALLTHRU - double tee pointing right */ 310 case 0x2563: /* FALLTHRU - double tee pointing left */ 311 case 0x2566: /* FALLTHRU - double tee pointing down */ 312 case 0x2569: /* FALLTHRU - double tee pointing up */ 313 case 0x256c: /* FALLTHRU - double large plus or crossover */ 314 case 0x2592: /* FALLTHRU - VT100 checker board (stipple) */ 315 case 0x25ae: /* FALLTHRU - Teletype solid square block */ 316 case 0x25c6: /* FALLTHRU - VT100 diamond */ 317 case 0x2603: /* FALLTHRU - Teletype lantern symbol */ 318 result = 1; 319 break; 320 default: 321 result = wcwidth(ch); 322 break; 323 } 324 return result; 325 } 326 #endif /* !NCURSES_WCWIDTH_GRAPHICS */ 327