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 /* 36 * tputs.c 37 * delay_output() 38 * _nc_outch() 39 * tputs() 40 * 41 */ 42 43 #include <curses.priv.h> 44 #include <ctype.h> 45 #include <term.h> /* padding_baud_rate, xon_xoff */ 46 #include <termcap.h> /* ospeed */ 47 #include <tic.h> 48 49 MODULE_ID("$Id: lib_tputs.c,v 1.66 2008/06/28 13:12:15 tom Exp $") 50 51 NCURSES_EXPORT_VAR(char) PC = 0; /* used by termcap library */ 52 NCURSES_EXPORT_VAR(NCURSES_OSPEED) ospeed = 0; /* used by termcap library */ 53 54 NCURSES_EXPORT_VAR(int) _nc_nulls_sent = 0; /* used by 'tack' program */ 55 56 #if NCURSES_NO_PADDING 57 NCURSES_EXPORT(void) 58 _nc_set_no_padding(SCREEN *sp) 59 { 60 bool no_padding = (getenv("NCURSES_NO_PADDING") != 0); 61 62 if (sp) 63 sp->_no_padding = no_padding; 64 else 65 _nc_prescreen._no_padding = no_padding; 66 67 TR(TRACE_CHARPUT | TRACE_MOVE, ("padding will%s be used", 68 GetNoPadding(sp) ? " not" : "")); 69 } 70 #endif 71 72 static int (*my_outch) (int c) = _nc_outch; 73 74 NCURSES_EXPORT(int) 75 delay_output(int ms) 76 { 77 T((T_CALLED("delay_output(%d)"), ms)); 78 79 if (no_pad_char) { 80 _nc_flush(); 81 napms(ms); 82 } else { 83 register int nullcount; 84 85 nullcount = (ms * _nc_baudrate(ospeed)) / (BAUDBYTE * 1000); 86 for (_nc_nulls_sent += nullcount; nullcount > 0; nullcount--) 87 my_outch(PC); 88 if (my_outch == _nc_outch) 89 _nc_flush(); 90 } 91 92 returnCode(OK); 93 } 94 95 NCURSES_EXPORT(void) 96 _nc_flush(void) 97 { 98 (void) fflush(NC_OUTPUT); 99 } 100 101 NCURSES_EXPORT(int) 102 _nc_outch(int ch) 103 { 104 COUNT_OUTCHARS(1); 105 106 if (SP != 0 107 && SP->_cleanup) { 108 char tmp = ch; 109 /* 110 * POSIX says write() is safe in a signal handler, but the 111 * buffered I/O is not. 112 */ 113 write(fileno(NC_OUTPUT), &tmp, 1); 114 } else { 115 putc(ch, NC_OUTPUT); 116 } 117 return OK; 118 } 119 120 NCURSES_EXPORT(int) 121 putp(const char *string) 122 { 123 return tputs(string, 1, _nc_outch); 124 } 125 126 NCURSES_EXPORT(int) 127 tputs(const char *string, int affcnt, int (*outc) (int)) 128 { 129 bool always_delay; 130 bool normal_delay; 131 int number; 132 #if BSD_TPUTS 133 int trailpad; 134 #endif /* BSD_TPUTS */ 135 136 #ifdef TRACE 137 char addrbuf[32]; 138 139 if (USE_TRACEF(TRACE_TPUTS)) { 140 if (outc == _nc_outch) 141 (void) strcpy(addrbuf, "_nc_outch"); 142 else 143 (void) sprintf(addrbuf, "%p", outc); 144 if (_nc_tputs_trace) { 145 _tracef("tputs(%s = %s, %d, %s) called", _nc_tputs_trace, 146 _nc_visbuf(string), affcnt, addrbuf); 147 } else { 148 _tracef("tputs(%s, %d, %s) called", _nc_visbuf(string), affcnt, addrbuf); 149 } 150 TPUTS_TRACE(NULL); 151 _nc_unlock_global(tracef); 152 } 153 #endif /* TRACE */ 154 155 if (!VALID_STRING(string)) 156 return ERR; 157 158 if (cur_term == 0) { 159 always_delay = FALSE; 160 normal_delay = TRUE; 161 } else { 162 always_delay = (string == bell) || (string == flash_screen); 163 normal_delay = 164 !xon_xoff 165 && padding_baud_rate 166 #if NCURSES_NO_PADDING 167 && !GetNoPadding(SP) 168 #endif 169 && (_nc_baudrate(ospeed) >= padding_baud_rate); 170 } 171 172 #if BSD_TPUTS 173 /* 174 * This ugly kluge deals with the fact that some ancient BSD programs 175 * (like nethack) actually do the likes of tputs("50") to get delays. 176 */ 177 trailpad = 0; 178 if (isdigit(UChar(*string))) { 179 while (isdigit(UChar(*string))) { 180 trailpad = trailpad * 10 + (*string - '0'); 181 string++; 182 } 183 trailpad *= 10; 184 if (*string == '.') { 185 string++; 186 if (isdigit(UChar(*string))) { 187 trailpad += (*string - '0'); 188 string++; 189 } 190 while (isdigit(UChar(*string))) 191 string++; 192 } 193 194 if (*string == '*') { 195 trailpad *= affcnt; 196 string++; 197 } 198 } 199 #endif /* BSD_TPUTS */ 200 201 my_outch = outc; /* redirect delay_output() */ 202 while (*string) { 203 if (*string != '$') 204 (*outc) (*string); 205 else { 206 string++; 207 if (*string != '<') { 208 (*outc) ('$'); 209 if (*string) 210 (*outc) (*string); 211 } else { 212 bool mandatory; 213 214 string++; 215 if ((!isdigit(UChar(*string)) && *string != '.') 216 || !strchr(string, '>')) { 217 (*outc) ('$'); 218 (*outc) ('<'); 219 continue; 220 } 221 222 number = 0; 223 while (isdigit(UChar(*string))) { 224 number = number * 10 + (*string - '0'); 225 string++; 226 } 227 number *= 10; 228 if (*string == '.') { 229 string++; 230 if (isdigit(UChar(*string))) { 231 number += (*string - '0'); 232 string++; 233 } 234 while (isdigit(UChar(*string))) 235 string++; 236 } 237 238 mandatory = FALSE; 239 while (*string == '*' || *string == '/') { 240 if (*string == '*') { 241 number *= affcnt; 242 string++; 243 } else { /* if (*string == '/') */ 244 mandatory = TRUE; 245 string++; 246 } 247 } 248 249 if (number > 0 250 && (always_delay 251 || normal_delay 252 || mandatory)) 253 delay_output(number / 10); 254 255 } /* endelse (*string == '<') */ 256 } /* endelse (*string == '$') */ 257 258 if (*string == '\0') 259 break; 260 261 string++; 262 } 263 264 #if BSD_TPUTS 265 /* 266 * Emit any BSD-style prefix padding that we've accumulated now. 267 */ 268 if (trailpad > 0 269 && (always_delay || normal_delay)) 270 delay_output(trailpad / 10); 271 #endif /* BSD_TPUTS */ 272 273 my_outch = _nc_outch; 274 return OK; 275 } 276