1 /* Copyright (c) 1980 Regents of the University of California */ 2 static char *sccsid = "@(#)ex_tty.c 6.2 10/30/80"; 3 #include "ex.h" 4 #include "ex_tty.h" 5 6 /* 7 * Terminal type initialization routines, 8 * and calculation of flags at entry or after 9 * a shell escape which may change them. 10 */ 11 short ospeed = -1; 12 13 gettmode() 14 { 15 16 #ifndef USG3TTY 17 if (gtty(1, &tty) < 0) 18 return; 19 if (ospeed != tty.sg_ospeed) 20 value(SLOWOPEN) = tty.sg_ospeed < B1200; 21 ospeed = tty.sg_ospeed; 22 normf = tty.sg_flags; 23 UPPERCASE = (tty.sg_flags & LCASE) != 0; 24 GT = (tty.sg_flags & XTABS) != XTABS && !XT; 25 NONL = (tty.sg_flags & CRMOD) == 0; 26 #else 27 if (ioctl(1, TCGETA, &tty) < 0) 28 return; 29 if (ospeed != tty.c_cflag & CBAUD) 30 value(SLOWOPEN) = (tty.c_cflag & CBAUD) < B1200; 31 ospeed = tty.c_cflag & CBAUD; 32 normf = tty; 33 UPPERCASE = (tty.c_iflag & IUCLC) != 0; 34 GT = (tty.c_oflag & TABDLY) != TAB3 && !XT; 35 NONL = (tty.c_oflag & OCRNL) == 0; 36 #endif 37 } 38 39 char *xPC; 40 char **sstrs[] = { 41 &AL, &BC, &BT, &CD, &CE, &CL, &CM, &xCR, &DC, &DL, &DM, &DO, &ED, &EI, 42 &F0, &F1, &F2, &F3, &F4, &F5, &F6, &F7, &F8, &F9, 43 &HO, &IC, &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU, &LL, 44 &ND, &xNL, &xPC, &SE, &SF, &SO, &SR, &TA, &TE, &TI, &UP, &VB, &VS, &VE 45 }; 46 bool *sflags[] = { 47 &AM, &BS, &DA, &DB, &EO, &HC, &HZ, &IN, &MI, &NC, &NS, &OS, &UL, 48 &XB, &XN, &XT, &XX 49 }; 50 char **fkeys[10] = { 51 &F0, &F1, &F2, &F3, &F4, &F5, &F6, &F7, &F8, &F9 52 }; 53 setterm(type) 54 char *type; 55 { 56 char *tgoto(); 57 register int unknown, i; 58 register int l; 59 char ltcbuf[TCBUFSIZE]; 60 61 if (type[0] == 0) 62 type = "xx"; 63 unknown = 0; 64 putpad(TE); 65 if (tgetent(ltcbuf, type) != 1) { 66 unknown++; 67 CP(ltcbuf, "xx|dumb:"); 68 } 69 i = LINES = tgetnum("li"); 70 if (LINES <= 5) 71 LINES = 24; 72 if (LINES > TUBELINES) 73 LINES = TUBELINES; 74 l = LINES; 75 if (ospeed < B1200) 76 l = 9; /* including the message line at the bottom */ 77 else if (ospeed < B2400) 78 l = 17; 79 if (l > LINES) 80 l = LINES; 81 aoftspace = tspace; 82 zap(); 83 /* 84 * Initialize keypad arrow keys. 85 */ 86 arrows[0].cap = KU; arrows[0].mapto = "k"; arrows[0].descr = "up"; 87 arrows[1].cap = KD; arrows[1].mapto = "j"; arrows[1].descr = "down"; 88 arrows[2].cap = KL; arrows[2].mapto = "h"; arrows[2].descr = "left"; 89 arrows[3].cap = KR; arrows[3].mapto = "l"; arrows[3].descr = "right"; 90 arrows[4].cap = KH; arrows[4].mapto = "H"; arrows[4].descr = "home"; 91 92 #ifdef TIOCLGET 93 /* 94 * Now map users susp char to ^Z, being careful that the susp 95 * overrides any arrow key, but only for hackers (=new tty driver). 96 */ 97 { 98 static char sc[2]; 99 int i, fnd; 100 101 ioctl(0, TIOCGETD, &ldisc); 102 if (ldisc == NTTYDISC) { 103 sc[0] = olttyc.t_suspc; 104 sc[1] = 0; 105 if (olttyc.t_suspc == CTRL(z)) { 106 for (i=0; i<=4; i++) 107 if (arrows[i].cap[0] == CTRL(z)) 108 addmac(sc, NULL, NULL, arrows); 109 } else 110 addmac(sc, "\32", "susp", arrows); 111 } 112 } 113 #endif 114 115 options[WINDOW].ovalue = options[WINDOW].odefault = l - 1; 116 if (defwind) options[WINDOW].ovalue = defwind; 117 options[SCROLL].ovalue = options[SCROLL].odefault = HC ? 11 : ((l-1) / 2); 118 COLUMNS = tgetnum("co"); 119 if (COLUMNS <= 4) 120 COLUMNS = 1000; 121 if (tgoto(CM, 2, 2)[0] == 'O') /* OOPS */ 122 CA = 0, CM = 0; 123 else 124 CA = 1, costCM = cost(tgoto(CM, 8, 10)); 125 costSR = cost(SR); 126 costAL = cost(AL); 127 PC = xPC ? xPC[0] : 0; 128 aoftspace = tspace; 129 CP(ttytype, longname(ltcbuf, type)); 130 if (i <= 0) 131 LINES = 2; 132 /* proper strings to change tty type */ 133 termreset(); 134 gettmode(); 135 value(REDRAW) = AL && DL; 136 value(OPTIMIZE) = !CA && !GT; 137 if (ospeed == B1200 && !value(REDRAW)) 138 value(SLOWOPEN) = 1; /* see also gettmode above */ 139 if (unknown) 140 serror("%s: Unknown terminal type", type); 141 } 142 143 zap() 144 { 145 register char *namp; 146 register bool **fp; 147 register char ***sp; 148 149 namp = "ambsdadbeohchzinmincnsosulxbxnxtxx"; 150 fp = sflags; 151 do { 152 *(*fp++) = tgetflag(namp); 153 namp += 2; 154 } while (*namp); 155 namp = "albcbtcdceclcmcrdcdldmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullndnlpcsesfsosrtatetiupvbvsve"; 156 sp = sstrs; 157 do { 158 *(*sp++) = tgetstr(namp, &aoftspace); 159 namp += 2; 160 } while (*namp); 161 } 162 163 char * 164 longname(bp, def) 165 register char *bp; 166 char *def; 167 { 168 register char *cp; 169 170 while (*bp && *bp != ':' && *bp != '|') 171 bp++; 172 if (*bp == '|') { 173 bp++; 174 cp = bp; 175 while (*cp && *cp != ':' && *cp != '|') 176 cp++; 177 *cp = 0; 178 return (bp); 179 } 180 return (def); 181 } 182 183 char * 184 fkey(i) 185 int i; 186 { 187 if (0 <= i && i <= 9) 188 return(*fkeys[i]); 189 else 190 return(NOSTR); 191 } 192 193 /* 194 * cost figures out how much (in characters) it costs to send the string 195 * str to the terminal. It takes into account padding information, as 196 * much as it can, for a typical case. (Right now the typical case assumes 197 * the number of lines affected is the size of the screen, since this is 198 * mainly used to decide if AL or SR is better, and this always happens 199 * at the top of the screen. We assume cursor motion (CM) has little 200 * padding, if any, required, so that case, which is really more important 201 * than AL vs SR, won't be really affected.) 202 */ 203 static int costnum; 204 cost(str) 205 char *str; 206 { 207 int countnum(); 208 209 if (str == NULL) 210 return 10000; /* infinity */ 211 costnum = 0; 212 tputs(str, LINES, countnum); 213 return costnum; 214 } 215 216 /* ARGSUSED */ 217 countnum(ch) 218 char ch; 219 { 220 costnum++; 221 } 222