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- /*
- * Copyright (c) 1981 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)cr_tty.c 5.4 (Berkeley) 6/30/88";
- #endif /* not lint */
-
- /*
- * Terminal initialization routines.
- *
- */
-
- # include "curses.ext"
- # include <string.h>
- # include <termcap.h>
-
- static bool *sflags[] = {
- &AM, &BS, &DA, &DB, &EO, &HC, &HZ, &IN, &MI,
- &MS, &NC, &NS, &OS, &UL, &XB, &XN, &XT, &XS,
- &XX
- };
-
- static char *_PC,
- **sstrs[] = {
- &AL, &BC, &BT, &CD, &CE, &CL, &CM, &CR, &CS,
- &DC, &DL, &DM, &DO, &ED, &EI, &K0, &K1, &K2,
- &K3, &K4, &K5, &K6, &K7, &K8, &K9, &HO, &IC,
- &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU,
- &LL, &MA, &ND, &NL, &_PC, &RC, &SC, &SE, &SF,
- &SO, &SR, &TA, &TE, &TI, &UC, &UE, &UP, &US,
- &VB, &VS, &VE, &AL_PARM, &DL_PARM, &UP_PARM,
- &DOWN_PARM, &LEFT_PARM, &RIGHT_PARM,
- };
-
- char _tspace[2048]; /* Space for capability strings */
-
- static char *aoftspace; /* Address of _tspace for relocation */
-
- static int destcol, destline;
-
- /*
- * This routine does terminal type initialization routines, and
- * calculation of flags at entry. It is almost entirely stolen from
- * Bill Joy's ex version 2.6.
- */
- short ospeed = -1;
-
- void gettmode() {
-
- if (gtty(_tty_ch, &_tty) < 0)
- return;
- savetty();
- if (stty(_tty_ch, &_tty) < 0)
- _tty.sg_flags = _res_flg;
- ospeed = _tty.sg_ospeed;
- _res_flg = _tty.sg_flags;
- UPPERCASE = (_tty.sg_flags & LCASE) != 0;
- GT = ((_tty.sg_flags & XTABS) == 0);
- NONL = ((_tty.sg_flags & CRMOD) == 0);
- _tty.sg_flags &= ~XTABS;
- stty(_tty_ch, &_tty);
- # ifdef DEBUG
- fprintf(outf, "GETTMODE: UPPERCASE = %s\n", UPPERCASE ? "TRUE":"FALSE");
- fprintf(outf, "GETTMODE: GT = %s\n", GT ? "TRUE" : "FALSE");
- fprintf(outf, "GETTMODE: NONL = %s\n", NONL ? "TRUE" : "FALSE");
- fprintf(outf, "GETTMODE: ospeed = %d\n", ospeed);
- # endif
- }
-
- int setterm(type)
- reg char *type; {
-
- reg int unknown;
- static char genbuf[1024];
- # ifdef TIOCGWINSZ
- struct winsize win;
- # endif
-
- # ifdef DEBUG
- fprintf(outf, "SETTERM(\"%s\")\n", type);
- fprintf(outf, "SETTERM: LINES = %d, COLS = %d\n", LINES, COLS);
- # endif
- if (type[0] == '\0')
- type = "xx";
- unknown = FALSE;
- if (tgetent(genbuf, type) != 1) {
- unknown++;
- strcpy(genbuf, "xx|dumb:");
- }
- # ifdef DEBUG
- fprintf(outf, "SETTERM: tty = %s\n", type);
- # endif
- # ifdef TIOCGWINSZ
- if (ioctl(_tty_ch, TIOCGWINSZ, &win) >= 0) {
- if (LINES == 0)
- LINES = win.ws_row;
- if (COLS == 0)
- COLS = win.ws_col;
- }
- # endif
-
- if (LINES == 0)
- LINES = tgetnum("li");
- if (LINES <= 5)
- LINES = 24;
-
- if (COLS == 0)
- COLS = tgetnum("co");
- if (COLS <= 4)
- COLS = 80;
-
- # ifdef DEBUG
- fprintf(outf, "SETTERM: LINES = %d, COLS = %d\n", LINES, COLS);
- # endif
- aoftspace = _tspace;
- zap(); /* get terminal description */
-
- /*
- * Handle funny termcap capabilities
- */
- if (CS && SC && RC) AL=DL="";
- if (AL_PARM && AL==NULL) AL="";
- if (DL_PARM && DL==NULL) DL="";
- if (IC && IM==NULL) IM="";
- if (IC && EI==NULL) EI="";
- if (!GT) BT=NULL; /* If we can't tab, we can't backtab either */
-
- if (tgoto(CM, destcol, destline)[0] == 'O')
- CA = FALSE, CM = 0;
- else
- CA = TRUE;
-
- PC = _PC ? _PC[0] : FALSE;
- aoftspace = _tspace;
- strncpy(ttytype, longname(genbuf, type), sizeof(ttytype) - 1);
- ttytype[sizeof(ttytype) - 1] = '\0';
- if (unknown)
- return ERR;
- return OK;
- }
-
- /*
- * This routine gets all the terminal flags from the termcap database
- */
-
- void zap()
- {
- register char *namp;
- register bool **fp;
- register char ***sp;
- #ifdef DEBUG
- register char *cp;
- #endif
-
- namp = "ambsdadbeohchzinmimsncnsosulxbxnxtxsxx";
- fp = sflags;
- do {
- *(*fp++) = tgetflag(namp);
- #ifdef DEBUG
- fprintf(outf, "%2.2s = %s\n", namp, *fp[-1] ? "TRUE" : "FALSE");
- #endif
- namp += 2;
- } while (*namp);
- namp = "albcbtcdceclcmcrcsdcdldmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullmandnlpcrcscsesfsosrtatetiucueupusvbvsveALDLUPDOLERI";
- sp = sstrs;
- do {
- *(*sp++) = tgetstr(namp, &aoftspace);
- #ifdef DEBUG
- fprintf(outf, "%2.2s = %s", namp, *sp[-1] == NULL ? "NULL\n" : "\"");
- if (*sp[-1] != NULL) {
- for (cp = *sp[-1]; *cp; cp++)
- fprintf(outf, "%s", unctrl(*cp));
- fprintf(outf, "\"\n");
- }
- #endif
- namp += 2;
- } while (*namp);
- if (XS)
- SO = SE = NULL;
- else {
- if (tgetnum("sg") > 0)
- SO = NULL;
- if (tgetnum("ug") > 0)
- US = NULL;
- if (!SO && US) {
- SO = US;
- SE = UE;
- }
- }
- }
-
- /*
- * return a capability from termcap
- */
- char *
- getcap(name)
- char *name;
- {
-
- return tgetstr(name, &aoftspace);
- }
-