1 /**************************************************************************** 2 * Copyright (c) 1998,1999,2000,2001 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 ****************************************************************************/ 33 34 /* 35 * tputs.c 36 * delay_output() 37 * _nc_outch() 38 * tputs() 39 * 40 */ 41 42 #include <curses.priv.h> 43 #include <ctype.h> 44 #include <term.h> /* padding_baud_rate, xon_xoff */ 45 #include <termcap.h> /* ospeed */ 46 #include <tic.h> 47 48 MODULE_ID("$Id: lib_tputs.c,v 1.56 2001/04/21 18:53:53 tom Exp $") 49 50 NCURSES_EXPORT_VAR(char) 51 PC = 0; /* used by termcap library */ 52 NCURSES_EXPORT_VAR(NCURSES_OSPEED) ospeed = 0; /* used by termcap library */ 53 54 NCURSES_EXPORT_VAR(int) 55 _nc_nulls_sent = 0; /* used by 'tack' program */ 56 57 static int (*my_outch) (int c) = _nc_outch; 58 59 NCURSES_EXPORT(int) 60 delay_output(int ms) 61 { 62 T((T_CALLED("delay_output(%d)"), ms)); 63 64 if (no_pad_char) { 65 _nc_flush(); 66 napms(ms); 67 } else { 68 register int nullcount; 69 70 nullcount = (ms * _nc_baudrate(ospeed)) / 10000; 71 for (_nc_nulls_sent += nullcount; nullcount > 0; nullcount--) 72 my_outch(PC); 73 if (my_outch == _nc_outch) 74 _nc_flush(); 75 } 76 77 returnCode(OK); 78 } 79 80 NCURSES_EXPORT(void) 81 _nc_flush(void) 82 { 83 (void) fflush(NC_OUTPUT); 84 } 85 86 NCURSES_EXPORT(int) 87 _nc_outch(int ch) 88 { 89 #ifdef TRACE 90 _nc_outchars++; 91 #endif /* TRACE */ 92 93 if (SP != 0 94 && SP->_cleanup) { 95 char tmp = ch; 96 /* 97 * POSIX says write() is safe in a signal handler, but the 98 * buffered I/O is not. 99 */ 100 write(fileno(NC_OUTPUT), &tmp, 1); 101 } else { 102 putc(ch, NC_OUTPUT); 103 } 104 return OK; 105 } 106 107 #if USE_WIDEC_SUPPORT 108 /* 109 * Reference: The Unicode Standard 2.0 110 * 111 * No surrogates supported (we're storing only one 16-bit Unicode value per 112 * cell). 113 */ 114 NCURSES_EXPORT(int) 115 _nc_utf8_outch(int ch) 116 { 117 static const unsigned byteMask = 0xBF; 118 static const unsigned otherMark = 0x80; 119 static const unsigned firstMark[] = 120 {0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC}; 121 122 int result[7], *ptr; 123 int count = 0; 124 125 if ((unsigned int) ch < 0x80) 126 count = 1; 127 else if ((unsigned int) ch < 0x800) 128 count = 2; 129 else if ((unsigned int) ch < 0x10000) 130 count = 3; 131 else if ((unsigned int) ch < 0x200000) 132 count = 4; 133 else if ((unsigned int) ch < 0x4000000) 134 count = 5; 135 else if ((unsigned int) ch <= 0x7FFFFFFF) 136 count = 6; 137 else { 138 count = 3; 139 ch = 0xFFFD; 140 } 141 ptr = result + count; 142 switch (count) { 143 case 6: 144 *--ptr = (ch | otherMark) & byteMask; 145 ch >>= 6; 146 /* FALLTHRU */ 147 case 5: 148 *--ptr = (ch | otherMark) & byteMask; 149 ch >>= 6; 150 /* FALLTHRU */ 151 case 4: 152 *--ptr = (ch | otherMark) & byteMask; 153 ch >>= 6; 154 /* FALLTHRU */ 155 case 3: 156 *--ptr = (ch | otherMark) & byteMask; 157 ch >>= 6; 158 /* FALLTHRU */ 159 case 2: 160 *--ptr = (ch | otherMark) & byteMask; 161 ch >>= 6; 162 /* FALLTHRU */ 163 case 1: 164 *--ptr = (ch | firstMark[count]); 165 break; 166 } 167 while (count--) 168 _nc_outch(*ptr++); 169 return OK; 170 } 171 #endif 172 173 NCURSES_EXPORT(int) 174 putp(const char *string) 175 { 176 return tputs(string, 1, _nc_outch); 177 } 178 179 NCURSES_EXPORT(int) 180 tputs 181 (const char *string, int affcnt, int (*outc) (int)) 182 { 183 bool always_delay; 184 bool normal_delay; 185 int number; 186 #if BSD_TPUTS 187 int trailpad; 188 #endif /* BSD_TPUTS */ 189 190 #ifdef TRACE 191 char addrbuf[32]; 192 193 if (_nc_tracing & TRACE_TPUTS) { 194 if (outc == _nc_outch) 195 (void) strcpy(addrbuf, "_nc_outch"); 196 else 197 (void) sprintf(addrbuf, "%p", outc); 198 if (_nc_tputs_trace) { 199 _tracef("tputs(%s = %s, %d, %s) called", _nc_tputs_trace, 200 _nc_visbuf(string), affcnt, addrbuf); 201 } else { 202 _tracef("tputs(%s, %d, %s) called", _nc_visbuf(string), affcnt, addrbuf); 203 } 204 _nc_tputs_trace = (char *) NULL; 205 } 206 #endif /* TRACE */ 207 208 if (!VALID_STRING(string)) 209 return ERR; 210 211 if (cur_term == 0) { 212 always_delay = FALSE; 213 normal_delay = TRUE; 214 } else { 215 always_delay = (string == bell) || (string == flash_screen); 216 normal_delay = 217 !xon_xoff 218 && padding_baud_rate 219 #if NCURSES_NO_PADDING 220 && (SP == 0 || !(SP->_no_padding)) 221 #endif 222 && (_nc_baudrate(ospeed) >= padding_baud_rate); 223 } 224 225 #if BSD_TPUTS 226 /* 227 * This ugly kluge deals with the fact that some ancient BSD programs 228 * (like nethack) actually do the likes of tputs("50") to get delays. 229 */ 230 trailpad = 0; 231 if (isdigit(*string)) { 232 while (isdigit(*string)) { 233 trailpad = trailpad * 10 + (*string - '0'); 234 string++; 235 } 236 trailpad *= 10; 237 if (*string == '.') { 238 string++; 239 if (isdigit(*string)) { 240 trailpad += (*string - '0'); 241 string++; 242 } 243 while (isdigit(*string)) 244 string++; 245 } 246 247 if (*string == '*') { 248 trailpad *= affcnt; 249 string++; 250 } 251 } 252 #endif /* BSD_TPUTS */ 253 254 my_outch = outc; /* redirect delay_output() */ 255 while (*string) { 256 if (*string != '$') 257 (*outc) (*string); 258 else { 259 string++; 260 if (*string != '<') { 261 (*outc) ('$'); 262 if (*string) 263 (*outc) (*string); 264 } else { 265 bool mandatory; 266 267 string++; 268 if ((!isdigit(CharOf(*string)) && *string != '.') 269 || !strchr(string, '>')) { 270 (*outc) ('$'); 271 (*outc) ('<'); 272 continue; 273 } 274 275 number = 0; 276 while (isdigit(CharOf(*string))) { 277 number = number * 10 + (*string - '0'); 278 string++; 279 } 280 number *= 10; 281 if (*string == '.') { 282 string++; 283 if (isdigit(CharOf(*string))) { 284 number += (*string - '0'); 285 string++; 286 } 287 while (isdigit(CharOf(*string))) 288 string++; 289 } 290 291 mandatory = FALSE; 292 while (*string == '*' || *string == '/') { 293 if (*string == '*') { 294 number *= affcnt; 295 string++; 296 } else { /* if (*string == '/') */ 297 mandatory = TRUE; 298 string++; 299 } 300 } 301 302 if (number > 0 303 && (always_delay 304 || normal_delay 305 || mandatory)) 306 delay_output(number / 10); 307 308 } /* endelse (*string == '<') */ 309 } /* endelse (*string == '$') */ 310 311 if (*string == '\0') 312 break; 313 314 string++; 315 } 316 317 #if BSD_TPUTS 318 /* 319 * Emit any BSD-style prefix padding that we've accumulated now. 320 */ 321 if (trailpad > 0 322 && (always_delay || normal_delay)) 323 delay_output(trailpad / 10); 324 #endif /* BSD_TPUTS */ 325 326 my_outch = _nc_outch; 327 return OK; 328 } 329