1 /* $OpenBSD: lib_tputs.c,v 1.12 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 /* 38 * tputs.c 39 * delay_output() 40 * _nc_outch() 41 * tputs() 42 * 43 */ 44 45 #include <curses.priv.h> 46 #include <ctype.h> 47 #include <term.h> /* padding_baud_rate, xon_xoff */ 48 #include <termcap.h> /* ospeed */ 49 #include <tic.h> 50 51 MODULE_ID("$Id: lib_tputs.c,v 1.12 2010/01/12 23:22:06 nicm Exp $") 52 53 NCURSES_EXPORT_VAR(char) PC = 0; /* used by termcap library */ 54 NCURSES_EXPORT_VAR(NCURSES_OSPEED) ospeed = 0; /* used by termcap library */ 55 56 NCURSES_EXPORT_VAR(int) _nc_nulls_sent = 0; /* used by 'tack' program */ 57 58 #if NCURSES_NO_PADDING 59 NCURSES_EXPORT(void) 60 _nc_set_no_padding(SCREEN *sp) 61 { 62 bool no_padding = (getenv("NCURSES_NO_PADDING") != 0); 63 64 if (sp) 65 sp->_no_padding = no_padding; 66 else 67 _nc_prescreen._no_padding = no_padding; 68 69 TR(TRACE_CHARPUT | TRACE_MOVE, ("padding will%s be used", 70 GetNoPadding(sp) ? " not" : "")); 71 } 72 #endif 73 74 static int (*my_outch) (int c) = _nc_outch; 75 76 NCURSES_EXPORT(int) 77 delay_output(int ms) 78 { 79 T((T_CALLED("delay_output(%d)"), ms)); 80 81 if (no_pad_char) { 82 _nc_flush(); 83 napms(ms); 84 } else { 85 register int nullcount; 86 87 nullcount = (ms * _nc_baudrate(ospeed)) / (BAUDBYTE * 1000); 88 for (_nc_nulls_sent += nullcount; nullcount > 0; nullcount--) 89 my_outch(PC); 90 if (my_outch == _nc_outch) 91 _nc_flush(); 92 } 93 94 returnCode(OK); 95 } 96 97 NCURSES_EXPORT(void) 98 _nc_flush(void) 99 { 100 (void) fflush(NC_OUTPUT); 101 } 102 103 NCURSES_EXPORT(int) 104 _nc_outch(int ch) 105 { 106 COUNT_OUTCHARS(1); 107 108 if (SP != 0 109 && SP->_cleanup) { 110 char tmp = ch; 111 /* 112 * POSIX says write() is safe in a signal handler, but the 113 * buffered I/O is not. 114 */ 115 write(fileno(NC_OUTPUT), &tmp, 1); 116 } else { 117 putc(ch, NC_OUTPUT); 118 } 119 return OK; 120 } 121 122 NCURSES_EXPORT(int) 123 putp(const char *string) 124 { 125 return tputs(string, 1, _nc_outch); 126 } 127 128 NCURSES_EXPORT(int) 129 tputs(const char *string, int affcnt, int (*outc) (int)) 130 { 131 bool always_delay; 132 bool normal_delay; 133 int number; 134 #if BSD_TPUTS 135 int trailpad; 136 #endif /* BSD_TPUTS */ 137 138 #ifdef TRACE 139 char addrbuf[32]; 140 141 if (USE_TRACEF(TRACE_TPUTS)) { 142 if (outc == _nc_outch) 143 (void) strlcpy(addrbuf, "_nc_outch", sizeof(addrbuf)); 144 else 145 (void) snprintf(addrbuf, sizeof(addrbuf), "%p", outc); 146 if (_nc_tputs_trace) { 147 _tracef("tputs(%s = %s, %d, %s) called", _nc_tputs_trace, 148 _nc_visbuf(string), affcnt, addrbuf); 149 } else { 150 _tracef("tputs(%s, %d, %s) called", _nc_visbuf(string), affcnt, addrbuf); 151 } 152 TPUTS_TRACE(NULL); 153 _nc_unlock_global(tracef); 154 } 155 #endif /* TRACE */ 156 157 if (!VALID_STRING(string)) 158 return ERR; 159 160 if (cur_term == 0) { 161 always_delay = FALSE; 162 normal_delay = TRUE; 163 } else { 164 always_delay = (string == bell) || (string == flash_screen); 165 normal_delay = 166 !xon_xoff 167 && padding_baud_rate 168 #if NCURSES_NO_PADDING 169 && !GetNoPadding(SP) 170 #endif 171 && (_nc_baudrate(ospeed) >= padding_baud_rate); 172 } 173 174 #if BSD_TPUTS 175 /* 176 * This ugly kluge deals with the fact that some ancient BSD programs 177 * (like nethack) actually do the likes of tputs("50") to get delays. 178 */ 179 trailpad = 0; 180 if (isdigit(UChar(*string))) { 181 while (isdigit(UChar(*string))) { 182 trailpad = trailpad * 10 + (*string - '0'); 183 string++; 184 } 185 trailpad *= 10; 186 if (*string == '.') { 187 string++; 188 if (isdigit(UChar(*string))) { 189 trailpad += (*string - '0'); 190 string++; 191 } 192 while (isdigit(UChar(*string))) 193 string++; 194 } 195 196 if (*string == '*') { 197 trailpad *= affcnt; 198 string++; 199 } 200 } 201 #endif /* BSD_TPUTS */ 202 203 my_outch = outc; /* redirect delay_output() */ 204 while (*string) { 205 if (*string != '$') 206 (*outc) (*string); 207 else { 208 string++; 209 if (*string != '<') { 210 (*outc) ('$'); 211 if (*string) 212 (*outc) (*string); 213 } else { 214 bool mandatory; 215 216 string++; 217 if ((!isdigit(UChar(*string)) && *string != '.') 218 || !strchr(string, '>')) { 219 (*outc) ('$'); 220 (*outc) ('<'); 221 continue; 222 } 223 224 number = 0; 225 while (isdigit(UChar(*string))) { 226 number = number * 10 + (*string - '0'); 227 string++; 228 } 229 number *= 10; 230 if (*string == '.') { 231 string++; 232 if (isdigit(UChar(*string))) { 233 number += (*string - '0'); 234 string++; 235 } 236 while (isdigit(UChar(*string))) 237 string++; 238 } 239 240 mandatory = FALSE; 241 while (*string == '*' || *string == '/') { 242 if (*string == '*') { 243 number *= affcnt; 244 string++; 245 } else { /* if (*string == '/') */ 246 mandatory = TRUE; 247 string++; 248 } 249 } 250 251 if (number > 0 252 && (always_delay 253 || normal_delay 254 || mandatory)) 255 delay_output(number / 10); 256 257 } /* endelse (*string == '<') */ 258 } /* endelse (*string == '$') */ 259 260 if (*string == '\0') 261 break; 262 263 string++; 264 } 265 266 #if BSD_TPUTS 267 /* 268 * Emit any BSD-style prefix padding that we've accumulated now. 269 */ 270 if (trailpad > 0 271 && (always_delay || normal_delay)) 272 delay_output(trailpad / 10); 273 #endif /* BSD_TPUTS */ 274 275 my_outch = _nc_outch; 276 return OK; 277 } 278