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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
- #ifndef lint
- static char *sccsid = "@(#)ex_put.c 7.10 (Berkeley) 3/9/87; 1.2 (Bellcore) 87/04/24";
- #endif not lint
-
- #include "ex.h"
- #include "ex_tty.h"
- #include "ex_vis.h"
-
- /*
- * Terminal driving and line formatting routines.
- * Basic motion optimizations are done here as well
- * as formatting of lines (printing of control characters,
- * line numbering and the like).
- */
-
- /*
- * The routines outchar, putchar and pline are actually
- * variables, and these variables point at the current definitions
- * of the routines. See the routine setflav.
- * We sometimes make outchar be routines which catch the characters
- * to be printed, e.g. if we want to see how long a line is.
- * During open/visual, outchar and putchar will be set to
- * routines in the file ex_vput.c (vputchar, vinschar, etc.).
- */
- int (*Outchar)() = termchar;
- int (*Put_char)() = normchar;
- int (*Pline)() = normline;
-
- int (*
- setlist(t))()
- bool t;
- {
- register int (*P)();
-
- listf = t;
- P = Put_char;
- Put_char = t ? listchar : normchar;
- return (P);
- }
-
- int (*
- setnumb(t))()
- bool t;
- {
- register int (*P)();
-
- numberf = t;
- P = Pline;
- Pline = t ? numbline : normline;
- return (P);
- }
-
- /*
- * Format c for list mode; leave things in common
- * with normal print mode to be done by normchar.
- */
- listchar(c)
- register short c;
- {
-
- c &= (TRIM|QUOTE);
- switch (c) {
-
- case '\t':
- case '\b':
- outchar('^');
- c = ctlof(c);
- break;
-
- case '\n':
- break;
-
- case '\n' | QUOTE:
- outchar('$');
- break;
-
- default:
- if (c & QUOTE)
- break;
- if (c < ' ' && c != '\n' || c == DELETE)
- outchar('^'), c = ctlof(c);
- break;
- }
- normchar(c);
- }
-
- /*
- * Format c for printing. Handle funnies of upper case terminals
- * and crocky hazeltines which don't have ~.
- */
- normchar(c)
- register short c;
- {
- register char *colp;
-
- c &= (TRIM|QUOTE);
- if (c == '~' && HZ) {
- normchar('\\');
- c = '^';
- }
- if (c & QUOTE)
- switch (c) {
-
- case ' ' | QUOTE:
- case '\b' | QUOTE:
- break;
-
- case QUOTE:
- return;
-
- default:
- c &= TRIM;
- }
- else if (c < ' ' && (c != '\b' || !OS) && c != '\n' && c != '\t' || c == DELETE)
- ex_putchar('^'), c = ctlof(c);
- else if (UPPERCASE)
- if (isupper(c)) {
- outchar('\\');
- c = tolower(c);
- } else {
- colp = "({)}!|^~'`";
- while (*colp++)
- if (c == *colp++) {
- outchar('\\');
- c = colp[-2];
- break;
- }
- }
- outchar(c);
- }
-
- /*
- * Print a line with a number.
- */
- numbline(i)
- int i;
- {
-
- if (shudclob)
- slobber(' ');
- ex_printf("%6d ", i);
- normline();
- }
-
- /*
- * Normal line output, no numbering.
- */
- normline()
- {
- register char *cp;
-
- if (shudclob)
- slobber(linebuf[0]);
- /* pdp-11 doprnt is not reentrant so can't use "printf" here
- in case we are tracing */
- for (cp = linebuf; *cp;)
- ex_putchar(*cp++);
- if (!inopen)
- ex_putchar('\n' | QUOTE);
- }
-
- /*
- * Given c at the beginning of a line, determine whether
- * the printing of the line will erase or otherwise obliterate
- * the prompt which was printed before. If it won't, do it now.
- */
- slobber(c)
- int c;
- {
-
- shudclob = 0;
- switch (c) {
-
- case '\t':
- if (Put_char == listchar)
- return;
- break;
-
- default:
- return;
-
- case ' ':
- case 0:
- break;
- }
- if (OS)
- return;
- flush();
- putch(' ');
- if (BC)
- tputs(BC, 0, putch);
- else
- putch('\b');
- }
-
- /*
- * The output buffer is initialized with a useful error
- * message so we don't have to keep it in data space.
- */
- static char linb[66];
- char *linp = linb;
-
- /*
- * Phadnl records when we have already had a complete line ending with \n.
- * If another line starts without a flush, and the terminal suggests it,
- * we switch into -nl mode so that we can send lineffeeds to avoid
- * a lot of spacing.
- */
- static bool phadnl;
-
- /*
- * Indirect to current definition of putchar.
- */
- ex_putchar(c)
- int c;
- {
-
- (*Put_char)(c);
- }
-
- /*
- * Termchar routine for command mode.
- * Watch for possible switching to -nl mode.
- * Otherwise flush into next level of buffering when
- * small buffer fills or at a newline.
- */
- termchar(c)
- int c;
- {
-
- if (pfast == 0 && phadnl)
- pstart();
- if (c == '\n')
- phadnl = 1;
- else if (linp >= &linb[63])
- flush1();
- *linp++ = c;
- if (linp >= &linb[63]) {
- fgoto();
- flush1();
- }
- }
-
- flush()
- {
-
- flush1();
- flush2();
- }
-
- /*
- * Flush from small line buffer into output buffer.
- * Work here is destroying motion into positions, and then
- * letting fgoto do the optimized motion.
- */
- flush1()
- {
- register char *lp;
- register short c;
-
- *linp = 0;
- lp = linb;
- while (*lp)
- switch (c = *lp++) {
-
- case '\r':
- destline += destcol / COLUMNS;
- destcol = 0;
- continue;
-
- case '\b':
- if (destcol)
- destcol--;
- continue;
-
- case ' ':
- destcol++;
- continue;
-
- case '\t':
- destcol += value(TABSTOP) - destcol % value(TABSTOP);
- continue;
-
- case '\n':
- destline += destcol / COLUMNS + 1;
- if (destcol != 0 && destcol % COLUMNS == 0)
- destline--;
- destcol = 0;
- continue;
-
- default:
- fgoto();
- for (;;) {
- if (AM == 0 && outcol == COLUMNS)
- fgoto();
- c &= TRIM;
- putch(c);
- if (c == '\b') {
- outcol--;
- destcol--;
- } else if (c >= ' ' && c != DELETE) {
- outcol++;
- destcol++;
- if (XN && outcol % COLUMNS == 0)
- putch('\r'), putch('\n');
- }
- c = *lp++;
- if (c <= ' ')
- break;
- }
- --lp;
- continue;
- }
- linp = linb;
- }
-
- flush2()
- {
-
- fgoto();
- flusho();
- pstop();
- }
-
- /*
- * Sync the position of the output cursor.
- * Most work here is rounding for terminal boundaries getting the
- * column position implied by wraparound or the lack thereof and
- * rolling up the screen to get destline on the screen.
- */
- fgoto()
- {
- register int l, c;
-
- if (destcol > COLUMNS - 1) {
- destline += destcol / COLUMNS;
- destcol %= COLUMNS;
- }
- if (outcol > COLUMNS - 1) {
- l = (outcol + 1) / COLUMNS;
- outline += l;
- outcol %= COLUMNS;
- if (AM == 0) {
- while (l > 0) {
- if (pfast)
- if (xCR)
- tputs(xCR, 0, putch);
- else
- putch('\r');
- if (xNL)
- tputs(xNL, 0, putch);
- else
- putch('\n');
- l--;
- }
- outcol = 0;
- }
- if (outline > LINES - 1) {
- destline -= outline - (LINES - 1);
- outline = LINES - 1;
- }
- }
- if (destline > LINES - 1) {
- l = destline;
- destline = LINES - 1;
- if (outline < LINES - 1) {
- c = destcol;
- if (pfast == 0 && (!CA || holdcm))
- destcol = 0;
- fgoto();
- destcol = c;
- }
- while (l > LINES - 1) {
- /*
- * The following linefeed (or simulation thereof)
- * is supposed to scroll up the screen, since we
- * are on the bottom line. We make the assumption
- * that linefeed will scroll. If ns is in the
- * capability list this won't work. We should
- * probably have an sc capability but sf will
- * generally take the place if it works.
- *
- * Superbee glitch: in the middle of the screen we
- * have to use esc B (down) because linefeed screws up
- * in "Efficient Paging" (what a joke) mode (which is
- * essential in some SB's because CRLF mode puts garbage
- * in at end of memory), but you must use linefeed to
- * scroll since down arrow won't go past memory end.
- * I turned this off after recieving Paul Eggert's
- * Superbee description which wins better.
- */
- if (xNL /* && !XB */ && pfast)
- tputs(xNL, 0, putch);
- else
- putch('\n');
- l--;
- if (pfast == 0)
- outcol = 0;
- }
- }
- if (destline < outline && !(CA && !holdcm || UP != NOSTR))
- destline = outline;
- if (CA && !holdcm)
- if (plod(costCM) > 0)
- plod(0);
- else
- tputs(tgoto(CM, destcol, destline), 0, putch);
- else
- plod(0);
- outline = destline;
- outcol = destcol;
- }
-
- /*
- * Tab to column col by flushing and then setting destcol.
- * Used by "set all".
- */
- tab(col)
- int col;
- {
-
- flush1();
- destcol = col;
- }
-
- /*
- * Move (slowly) to destination.
- * Hard thing here is using home cursor on really deficient terminals.
- * Otherwise just use cursor motions, hacking use of tabs and overtabbing
- * and backspace.
- */
-
- static int plodcnt, plodflg;
-
- plodput(c)
- {
-
- if (plodflg)
- plodcnt--;
- else
- putch(c);
- }
-
- plod(cnt)
- {
- register int i, j, k;
- register int soutcol, soutline;
-
- plodcnt = plodflg = cnt;
- soutcol = outcol;
- soutline = outline;
- /*
- * Consider homing and moving down/right from there, vs moving
- * directly with local motions to the right spot.
- */
- if (HO) {
- /*
- * i is the cost to home and tab/space to the right to
- * get to the proper column. This assumes ND space costs
- * 1 char. So i+destcol is cost of motion with home.
- */
- if (GT)
- i = (destcol / value(HARDTABS)) + (destcol % value(HARDTABS));
- else
- i = destcol;
- /*
- * j is cost to move locally without homing
- */
- if (destcol >= outcol) { /* if motion is to the right */
- j = destcol / value(HARDTABS) - outcol / value(HARDTABS);
- if (GT && j)
- j += destcol % value(HARDTABS);
- else
- j = destcol - outcol;
- } else
- /* leftward motion only works if we can backspace. */
- if (outcol - destcol <= i && (BS || BC))
- i = j = outcol - destcol; /* cheaper to backspace */
- else
- j = i + 1; /* impossibly expensive */
-
- /* k is the absolute value of vertical distance */
- k = outline - destline;
- if (k < 0)
- k = -k;
- j += k;
-
- /*
- * Decision. We may not have a choice if no UP.
- */
- if (i + destline < j || (!UP && destline < outline)) {
- /*
- * Cheaper to home. Do it now and pretend it's a
- * regular local motion.
- */
- tputs(HO, 0, plodput);
- outcol = outline = 0;
- } else if (LL) {
- /*
- * Quickly consider homing down and moving from there.
- * Assume cost of LL is 2.
- */
- k = (LINES - 1) - destline;
- if (i + k + 2 < j && (k<=0 || UP)) {
- tputs(LL, 0, plodput);
- outcol = 0;
- outline = LINES - 1;
- }
- }
- } else
- /*
- * No home and no up means it's impossible, so we return an
- * incredibly big number to make cursor motion win out.
- */
- if (!UP && destline < outline)
- return (500);
- if (GT)
- i = destcol % value(HARDTABS)
- + destcol / value(HARDTABS);
- else
- i = destcol;
- /*
- if (BT && outcol > destcol && (j = (((outcol+7) & ~7) - destcol - 1) >> 3)) {
- j *= (k = strlen(BT));
- if ((k += (destcol&7)) > 4)
- j += 8 - (destcol&7);
- else
- j += k;
- } else
- */
- j = outcol - destcol;
- /*
- * If we will later need a \n which will turn into a \r\n by
- * the system or the terminal, then don't bother to try to \r.
- */
- if ((NONL || !pfast) && outline < destline)
- goto dontcr;
- /*
- * If the terminal will do a \r\n and there isn't room for it,
- * then we can't afford a \r.
- */
- if (NC && outline >= destline)
- goto dontcr;
- /*
- * If it will be cheaper, or if we can't back up, then send
- * a return preliminarily.
- */
- if (j > i + 1 || outcol > destcol && !BS && !BC) {
- /*
- * BUG: this doesn't take the (possibly long) length
- * of xCR into account.
- */
- if (xCR)
- tputs(xCR, 0, plodput);
- else
- plodput('\r');
- if (NC) {
- if (xNL)
- tputs(xNL, 0, plodput);
- else
- plodput('\n');
- outline++;
- }
- outcol = 0;
- }
- dontcr:
- /* Move down, if necessary, until we are at the desired line */
- while (outline < destline) {
- j = destline - outline;
- if (j > costDP && DOWN_PARM) {
- /* Win big on Tek 4025 */
- tputs(tgoto(DOWN_PARM, 0, j), j, plodput);
- outline += j;
- }
- else {
- outline++;
- if (xNL && pfast)
- tputs(xNL, 0, plodput);
- else
- plodput('\n');
- }
- if (plodcnt < 0)
- goto out;
- if (NONL || pfast == 0)
- outcol = 0;
- }
- if (BT)
- k = strlen(BT); /* should probably be cost(BT) and moved out */
- /* Move left, if necessary, to desired column */
- while (outcol > destcol) {
- if (plodcnt < 0)
- goto out;
- if (BT && !insmode && outcol - destcol > 4+k) {
- tputs(BT, 0, plodput);
- outcol--;
- outcol -= outcol % value(HARDTABS); /* outcol &= ~7; */
- continue;
- }
- j = outcol - destcol;
- if (j > costLP && LEFT_PARM) {
- tputs(tgoto(LEFT_PARM, 0, j), j, plodput);
- outcol -= j;
- }
- else {
- outcol--;
- if (BC)
- tputs(BC, 0, plodput);
- else
- plodput('\b');
- }
- }
- /* Move up, if necessary, to desired row */
- while (outline > destline) {
- j = outline - destline;
- if (UP_PARM && j > 1) {
- /* Win big on Tek 4025 */
- tputs(tgoto(UP_PARM, 0, j), j, plodput);
- outline -= j;
- }
- else {
- outline--;
- tputs(UP, 0, plodput);
- }
- if (plodcnt < 0)
- goto out;
- }
- /*
- * Now move to the right, if necessary. We first tab to
- * as close as we can get.
- */
- if (GT && !insmode && destcol - outcol > 1) {
- /* tab to right as far as possible without passing col */
- for (;;) {
- i = tabcol(outcol, value(HARDTABS));
- if (i > destcol)
- break;
- if (TA)
- tputs(TA, 0, plodput);
- else
- plodput('\t');
- outcol = i;
- }
- /* consider another tab and then some backspaces */
- if (destcol - outcol > 4 && i < COLUMNS && (BC || BS)) {
- if (TA)
- tputs(TA, 0, plodput);
- else
- plodput('\t');
- outcol = i;
- /*
- * Back up. Don't worry about LEFT_PARM because
- * it's never more than 4 spaces anyway.
- */
- while (outcol > destcol) {
- outcol--;
- if (BC)
- tputs(BC, 0, plodput);
- else
- plodput('\b');
- }
- }
- }
- /*
- * We've tabbed as much as possible. If we still need to go
- * further (not exact or can't tab) space over. This is a
- * very common case when moving to the right with space.
- */
- while (outcol < destcol) {
- j = destcol - outcol;
- if (j > costRP && RIGHT_PARM) {
- /*
- * This probably happens rarely, if at all.
- * It seems mainly useful for ANSI terminals
- * with no hardware tabs, and I don't know
- * of any such terminal at the moment.
- */
- tputs(tgoto(RIGHT_PARM, 0, j), j, plodput);
- outcol += j;
- }
- else {
- /*
- * move one char to the right. We don't use ND space
- * because it's better to just print the char we are
- * moving over. There are various exceptions, however.
- * If !inopen, vtube contains garbage. If the char is
- * a null or a tab we want to print a space. Other
- * random chars we use space for instead, too.
- */
- if (!inopen || vtube[outline]==NULL ||
- (i=vtube[outline][outcol]) < ' ')
- i = ' ';
- if(i & QUOTE) /* mjm: no sign extension on 3B */
- i = ' ';
- if (insmode && ND)
- tputs(ND, 0, plodput);
- else
- plodput(i);
- outcol++;
- }
- if (plodcnt < 0)
- goto out;
- }
- out:
- if (plodflg) {
- outcol = soutcol;
- outline = soutline;
- }
- return(plodcnt);
- }
-
- /*
- * An input line arrived.
- * Calculate new (approximate) screen line position.
- * Approximate because kill character echoes newline with
- * no feedback and also because of long input lines.
- */
- noteinp()
- {
-
- outline++;
- if (outline > LINES - 1)
- outline = LINES - 1;
- destline = outline;
- destcol = outcol = 0;
- }
-
- /*
- * Something weird just happened and we
- * lost track of whats happening out there.
- * Since we cant, in general, read where we are
- * we just reset to some known state.
- * On cursor addressible terminals setting to unknown
- * will force a cursor address soon.
- */
- termreset()
- {
-
- endim();
- if (TI) /* otherwise it flushes anyway, and 'set tty=dumb' vomits */
- putpad(TI); /*adb change -- emit terminal initial sequence */
- destcol = 0;
- destline = LINES - 1;
- if (CA) {
- outcol = UKCOL;
- outline = UKCOL;
- } else {
- outcol = destcol;
- outline = destline;
- }
- }
-
- /*
- * Low level buffering, with the ability to drain
- * buffered output without printing it.
- */
- char *obp = obuf;
-
- draino()
- {
-
- obp = obuf;
- }
-
- flusho()
- {
-
- if (obp != obuf) {
- #ifndef vms
- write(1, obuf, obp - obuf);
- #else
- vms_write(1, obuf, obp - obuf);
- #endif
- obp = obuf;
- }
- }
-
- putnl()
- {
-
- ex_putchar('\n');
- }
-
- ex_putS(cp)
- char *cp;
- {
-
- if (cp == NULL)
- return;
- while (*cp)
- putch(*cp++);
- }
-
-
- putch(c)
- int c;
- {
-
- #ifdef OLD3BTTY /* mjm */
- if(c == '\n') /* mjm: Fake "\n\r" for '\n' til fix in 3B firmware */
- putch('\r'); /* mjm: vi does "stty -icanon" => -onlcr !! */
- #endif
- *obp++ = c & 0177;
- if (obp >= &obuf[sizeof obuf])
- flusho();
- }
-
- /*
- * Miscellaneous routines related to output.
- */
-
- /*
- * Put with padding
- */
- putpad(cp)
- char *cp;
- {
-
- flush();
- tputs(cp, 0, putch);
- }
-
- /*
- * Set output through normal command mode routine.
- */
- setoutt()
- {
-
- Outchar = termchar;
- }
-
- /*
- * Printf (temporarily) in list mode.
- */
- /*VARARGS1*/
- lprintf(cp, dp)
- char *cp, *dp;
- {
- register int (*P)();
-
- P = setlist(1);
- ex_printf(cp, dp);
- Put_char = P;
- }
-
- /*
- * Newline + flush.
- */
- putNFL()
- {
-
- putnl();
- flush();
- }
-
- /*
- * Try to start -nl mode.
- */
- pstart()
- {
-
- if (NONL)
- return;
- if (!value(OPTIMIZE))
- return;
- if (ruptible == 0 || pfast)
- return;
- fgoto();
- flusho();
- pfast = 1;
- normtty++;
- #ifndef USG3TTY
- tty.sg_flags = normf & ~(ECHO|XTABS|CRMOD);
- #else
- tty = normf;
- tty.c_oflag &= ~(ONLCR|TAB3);
- tty.c_lflag &= ~ECHO;
- #endif
- ex_sTTY(1);
- }
-
- /*
- * Stop -nl mode.
- */
- pstop()
- {
-
- if (inopen)
- return;
- phadnl = 0;
- linp = linb;
- draino();
- normal(normf);
- pfast &= ~1;
- }
-
- /*
- * Prep tty for open mode.
- */
- ttymode
- ostart()
- {
- ttymode f;
-
- if (!intty)
- error("Open and visual must be used interactively");
- ex_gTTY(1);
- normtty++;
- #ifndef USG3TTY
- f = tty.sg_flags;
- tty.sg_flags = (normf &~ (ECHO|XTABS|CRMOD)) |
- # ifdef CBREAK
- CBREAK;
- # else
- RAW;
- # endif
- # ifdef TIOCGETC
- ttcharoff();
- # endif
- #else
- f = tty;
- tty = normf;
- tty.c_iflag &= ~ICRNL;
- tty.c_lflag &= ~(ECHO|ICANON);
- tty.c_oflag &= ~(TAB3|ONLCR);
- tty.c_cc[VMIN] = 1;
- tty.c_cc[VTIME] = 1;
- ttcharoff();
- #endif
- ex_sTTY(1);
- tostart();
- pfast |= 2;
- return (f);
- }
-
- /* actions associated with putting the terminal in open mode */
- tostart()
- {
- putpad(VS);
- putpad(KS);
- if (!value(MESG)) {
- if (ttynbuf[0] == 0) {
- register char *tn;
- if ((tn=ttyname(2)) == NULL &&
- (tn=ttyname(1)) == NULL &&
- (tn=ttyname(0)) == NULL)
- ttynbuf[0] = 1;
- else
- strcpy(ttynbuf, tn);
- }
- if (ttynbuf[0] != 1) {
- struct stat sbuf;
- stat(ttynbuf, &sbuf);
- ttymesg = sbuf.st_mode & 0777;
- chmod(ttynbuf,
- #ifdef UCBV7
- /*
- * This applies to the UCB V7 Pdp-11 system with the
- * -u write option only.
- */
- 0611 /* 11 = urgent only allowed */
- #else
- 0600
- #endif
- );
- }
- }
- }
-
- /*
- * Turn off start/stop chars if they aren't the default ^S/^Q.
- * This is so idiots who make esc their start/stop don't lose.
- * We always turn off quit since datamedias send ^\ for their
- * right arrow key.
- */
- #ifdef TIOCGETC
- ttcharoff()
- {
- nttyc.t_quitc = '\377';
- if (nttyc.t_startc != CTRL(q))
- nttyc.t_startc = '\377';
- if (nttyc.t_stopc != CTRL(s))
- nttyc.t_stopc = '\377';
- # ifdef TIOCLGET
- nlttyc.t_suspc = '\377'; /* ^Z */
- nlttyc.t_dsuspc = '\377'; /* ^Y */
- nlttyc.t_flushc = '\377'; /* ^O */
- nlttyc.t_lnextc = '\377'; /* ^V */
- # endif
- }
- #endif
-
- #ifdef USG3TTY
- ttcharoff()
- {
- tty.c_cc[VQUIT] = '\377';
- # ifdef VSTART
- /*
- * The following is sample code if USG ever lets people change
- * their start/stop chars. As long as they can't we can't get
- * into trouble so we just leave them alone.
- */
- if (tty.c_cc[VSTART] != CTRL(q))
- tty.c_cc[VSTART] = '\377';
- if (tty.c_cc[VSTOP] != CTRL(s))
- tty.c_cc[VSTOP] = '\377';
- # endif
- }
- #endif
-
- /*
- * Stop open, restoring tty modes.
- */
- ostop(f)
- ttymode f;
- {
-
- #ifndef USG3TTY
- pfast = (f & CRMOD) == 0;
- #else
- pfast = (f.c_oflag & ONLCR) == 0;
- #endif
- termreset(), fgoto(), flusho();
- normal(f);
- tostop();
- }
-
- /* Actions associated with putting the terminal in the right mode. */
- tostop()
- {
- putpad(VE);
- putpad(KE);
- if (!value(MESG) && ttynbuf[0]>1)
- chmod(ttynbuf, ttymesg);
- }
-
- #ifndef CBREAK
- /*
- * Into cooked mode for interruptibility.
- */
- vcook()
- {
-
- tty.sg_flags &= ~RAW;
- ex_sTTY(1);
- }
-
- /*
- * Back into raw mode.
- */
- vraw()
- {
-
- tty.sg_flags |= RAW;
- ex_sTTY(1);
- }
- #endif
-
- /*
- * Restore flags to normal state f.
- */
- normal(f)
- ttymode f;
- {
-
- if (normtty > 0) {
- ignore(setty(f));
- normtty--;
- }
- }
-
- /*
- * Straight set of flags to state f.
- */
- ttymode
- setty(f)
- ttymode f;
- {
- #ifndef USG3TTY
- register int ot = tty.sg_flags;
- #else
- ttymode ot;
- ot = tty;
- #endif
-
- #ifndef USG3TTY
- # ifdef TIOCGETC
- if (f == normf) {
- nttyc = ottyc;
- # ifdef TIOCLGET
- nlttyc = olttyc;
- # endif
- } else
- ttcharoff();
- # endif
- tty.sg_flags = f;
- #else
- if (tty.c_lflag & ICANON)
- ttcharoff();
- tty = f;
- #endif
- ex_sTTY(1);
- return (ot);
- }
-
- ex_gTTY(i)
- int i;
- {
-
- #ifndef USG3TTY
- ignore(gtty(i, &tty));
- # ifdef TIOCGETC
- ioctl(i, TIOCGETC, (char *) &ottyc);
- nttyc = ottyc;
- # endif
- # ifdef TIOCGLTC
- ioctl(i, TIOCGLTC, (char *) &olttyc);
- nlttyc = olttyc;
- # endif
- #else
- ioctl(i, TCGETA, (char *) &tty);
- #endif
- }
-
- /*
- * ex_sTTY: set the tty modes on file descriptor i to be what's
- * currently in global "tty". (Also use nttyc if needed.)
- */
- ex_sTTY(i)
- int i;
- {
-
- #ifndef USG3TTY
- # ifdef USG
- /* Bug in USG tty driver, put out a DEL as a patch. */
- if (tty.sg_ospeed >= B1200)
- write(1, "\377", 1);
- # endif
-
- # ifdef TIOCSETN
- /* Don't flush typeahead if we don't have to */
- ioctl(i, TIOCSETN, (char *) &tty);
- # else
- /* We have to. Too bad. */
- stty(i, &tty);
- # endif
-
- # ifdef TIOCGETC
- /* Update the other random chars while we're at it. */
- ioctl(i, TIOCSETC, (char *) &nttyc);
- # endif
- # ifdef TIOCSLTC
- ioctl(i, TIOCSLTC, (char *) &nlttyc);
- # endif
-
- #else
- /* USG 3 very simple: just set everything */
- ioctl(i, TCSETAW, (char *) &tty);
- #endif
- }
-
- /*
- * Print newline, or blank if in open/visual
- */
- noonl()
- {
-
- ex_putchar(Outchar != termchar ? ' ' : '\n');
- }
-