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1.1 ! root 1: /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */ ! 2: /* hack.termcap.c - version 1.0.3 */ ! 3: ! 4: #include <stdio.h> ! 5: #include "config.h" /* for ROWNO and COLNO */ ! 6: #include "def.flag.h" /* for flags.nonull */ ! 7: extern char *tgetstr(), *tgoto(), *getenv(); ! 8: extern long *alloc(); ! 9: ! 10: #ifndef lint ! 11: extern /* it is defined in libtermlib (libtermcap) */ ! 12: #endif lint ! 13: short ospeed; /* terminal baudrate; used by tputs */ ! 14: static char tbuf[512]; ! 15: static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE; ! 16: static char *VS, *VE; ! 17: static int SG; ! 18: static char PC = '\0'; ! 19: char *CD; /* tested in pri.c: docorner() */ ! 20: int CO, LI; /* used in pri.c and whatis.c */ ! 21: ! 22: startup() ! 23: { ! 24: register char *term; ! 25: register char *tptr; ! 26: char *tbufptr, *pc; ! 27: ! 28: tptr = (char *) alloc(1024); ! 29: ! 30: tbufptr = tbuf; ! 31: if(!(term = getenv("TERM"))) ! 32: error("Can't get TERM."); ! 33: if(!strncmp(term, "5620", 4)) ! 34: flags.nonull = 1; /* this should be a termcap flag */ ! 35: if(tgetent(tptr, term) < 1) ! 36: error("Unknown terminal type: %s.", term); ! 37: if(pc = tgetstr("pc", &tbufptr)) ! 38: PC = *pc; ! 39: if(!(BC = tgetstr("bc", &tbufptr))) { ! 40: if(!tgetflag("bs")) ! 41: error("Terminal must backspace."); ! 42: BC = tbufptr; ! 43: tbufptr += 2; ! 44: *BC = '\b'; ! 45: } ! 46: HO = tgetstr("ho", &tbufptr); ! 47: CO = tgetnum("co"); ! 48: LI = tgetnum("li"); ! 49: if(CO < COLNO || LI < ROWNO+2) ! 50: setclipped(); ! 51: if(!(CL = tgetstr("cl", &tbufptr))) ! 52: error("Hack needs CL."); ! 53: ND = tgetstr("nd", &tbufptr); ! 54: if(tgetflag("os")) ! 55: error("Hack can't have OS."); ! 56: CE = tgetstr("ce", &tbufptr); ! 57: UP = tgetstr("up", &tbufptr); ! 58: /* It seems that xd is no longer supported, and we should use ! 59: a linefeed instead; unfortunately this requires resetting ! 60: CRMOD, and many output routines will have to be modified ! 61: slightly. Let's leave that till the next release. */ ! 62: XD = tgetstr("xd", &tbufptr); ! 63: /* not: XD = tgetstr("do", &tbufptr); */ ! 64: if(!(CM = tgetstr("cm", &tbufptr))) { ! 65: if(!UP && !HO) ! 66: error("Hack needs CM or UP or HO."); ! 67: printf("Playing hack on terminals without cm is suspect...\n"); ! 68: getret(); ! 69: } ! 70: SO = tgetstr("so", &tbufptr); ! 71: SE = tgetstr("se", &tbufptr); ! 72: SG = tgetnum("sg"); /* -1: not fnd; else # of spaces left by so */ ! 73: if(!SO || !SE || (SG > 0)) SO = SE = 0; ! 74: CD = tgetstr("cd", &tbufptr); ! 75: set_whole_screen(); /* uses LI and CD */ ! 76: if(tbufptr-tbuf > sizeof(tbuf)) error("TERMCAP entry too big...\n"); ! 77: free(tptr); ! 78: } ! 79: ! 80: start_screen() ! 81: { ! 82: xputs(TI); ! 83: xputs(VS); ! 84: } ! 85: ! 86: end_screen() ! 87: { ! 88: xputs(VE); ! 89: xputs(TE); ! 90: } ! 91: ! 92: /* Cursor movements */ ! 93: extern xchar curx, cury; ! 94: ! 95: curs(x, y) ! 96: register int x, y; /* not xchar: perhaps xchar is unsigned and ! 97: curx-x would be unsigned as well */ ! 98: { ! 99: ! 100: if (y == cury && x == curx) ! 101: return; ! 102: if(!ND && (curx != x || x <= 3)) { /* Extremely primitive */ ! 103: cmov(x, y); /* bunker!wtm */ ! 104: return; ! 105: } ! 106: if(abs(cury-y) <= 3 && abs(curx-x) <= 3) ! 107: nocmov(x, y); ! 108: else if((x <= 3 && abs(cury-y)<= 3) || (!CM && x<abs(curx-x))) { ! 109: (void) putchar('\r'); ! 110: curx = 1; ! 111: nocmov(x, y); ! 112: } else if(!CM) { ! 113: nocmov(x, y); ! 114: } else ! 115: cmov(x, y); ! 116: } ! 117: ! 118: nocmov(x, y) ! 119: { ! 120: if (cury > y) { ! 121: if(UP) { ! 122: while (cury > y) { /* Go up. */ ! 123: xputs(UP); ! 124: cury--; ! 125: } ! 126: } else if(CM) { ! 127: cmov(x, y); ! 128: } else if(HO) { ! 129: home(); ! 130: curs(x, y); ! 131: } /* else impossible("..."); */ ! 132: } else if (cury < y) { ! 133: if(XD) { ! 134: while(cury < y) { ! 135: xputs(XD); ! 136: cury++; ! 137: } ! 138: } else if(CM) { ! 139: cmov(x, y); ! 140: } else { ! 141: while(cury < y) { ! 142: xputc('\n'); ! 143: curx = 1; ! 144: cury++; ! 145: } ! 146: } ! 147: } ! 148: if (curx < x) { /* Go to the right. */ ! 149: if(!ND) cmov(x, y); else /* bah */ ! 150: /* should instead print what is there already */ ! 151: while (curx < x) { ! 152: xputs(ND); ! 153: curx++; ! 154: } ! 155: } else if (curx > x) { ! 156: while (curx > x) { /* Go to the left. */ ! 157: xputs(BC); ! 158: curx--; ! 159: } ! 160: } ! 161: } ! 162: ! 163: cmov(x, y) ! 164: register x, y; ! 165: { ! 166: xputs(tgoto(CM, x-1, y-1)); ! 167: cury = y; ! 168: curx = x; ! 169: } ! 170: ! 171: xputc(c) char c; { ! 172: (void) fputc(c, stdout); ! 173: } ! 174: ! 175: xputs(s) char *s; { ! 176: tputs(s, 1, xputc); ! 177: } ! 178: ! 179: cl_end() { ! 180: if(CE) ! 181: xputs(CE); ! 182: else { /* no-CE fix - free after Harold Rynes */ ! 183: /* this looks terrible, especially on a slow terminal ! 184: but is better than nothing */ ! 185: register cx = curx, cy = cury; ! 186: ! 187: while(curx < COLNO) { ! 188: xputc(' '); ! 189: curx++; ! 190: } ! 191: curs(cx, cy); ! 192: } ! 193: } ! 194: ! 195: clear_screen() { ! 196: xputs(CL); ! 197: curx = cury = 1; ! 198: } ! 199: ! 200: home() ! 201: { ! 202: if(HO) ! 203: xputs(HO); ! 204: else if(CM) ! 205: xputs(tgoto(CM, 0, 0)); ! 206: else ! 207: curs(1, 1); /* using UP ... */ ! 208: curx = cury = 1; ! 209: } ! 210: ! 211: standoutbeg() ! 212: { ! 213: if(SO) xputs(SO); ! 214: } ! 215: ! 216: standoutend() ! 217: { ! 218: if(SE) xputs(SE); ! 219: } ! 220: ! 221: backsp() ! 222: { ! 223: xputs(BC); ! 224: curx--; ! 225: } ! 226: ! 227: bell() ! 228: { ! 229: (void) putchar('\007'); /* curx does not change */ ! 230: (void) fflush(stdout); ! 231: } ! 232: ! 233: static short tmspc10[] = { /* from termcap */ ! 234: 0, 2000, 1333, 909, 743, 666, 500, 333, 166, 83, 55, 41, 20, 10, 5 ! 235: }; ! 236: ! 237: delay_output() { ! 238: /* delay 50 ms - could also use a 'nap'-system call */ ! 239: /* BUG: if the padding character is visible, as it is on the 5620 ! 240: then this looks terrible. */ ! 241: if(!flags.nonull) ! 242: tputs("50", 1, xputc); ! 243: ! 244: /* cbosgd!cbcephus!pds for SYS V R2 */ ! 245: /* is this terminfo, or what? */ ! 246: /* tputs("$<50>", 1, xputc); */ ! 247: ! 248: else if(ospeed > 0 || ospeed < SIZE(tmspc10)) if(CM) { ! 249: /* delay by sending cm(here) an appropriate number of times */ ! 250: register int cmlen = strlen(tgoto(CM, curx-1, cury-1)); ! 251: register int i = 500 + tmspc10[ospeed]/2; ! 252: ! 253: while(i > 0) { ! 254: cmov(curx, cury); ! 255: i -= cmlen*tmspc10[ospeed]; ! 256: } ! 257: } ! 258: } ! 259: ! 260: cl_eos() /* free after Robert Viduya */ ! 261: { /* must only be called with curx = 1 */ ! 262: ! 263: if(CD) ! 264: xputs(CD); ! 265: else { ! 266: register int cx = curx, cy = cury; ! 267: while(cury <= LI-2) { ! 268: cl_end(); ! 269: xputc('\n'); ! 270: curx = 1; ! 271: cury++; ! 272: } ! 273: cl_end(); ! 274: curs(cx, cy); ! 275: } ! 276: }
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