Add copyright

[unix-history] / usr / src / usr.bin / ex / ex_tty.c

diff --git a/usr/src/usr.bin/ex/ex_tty.c b/usr/src/usr.bin/ex/ex_tty.c
index 99b14e7..7c2a5a0 100644 (file)
--- a/usr/src/usr.bin/ex/ex_tty.c
+++ b/usr/src/usr.bin/ex/ex_tty.c
@@ -1,4 +1,13 @@
-/* Copyright (c) 1979 Regents of the University of California */
+/*
+ * 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_tty.c   7.9 (Berkeley) %G%";
+#endif not lint
+

 #include "ex.h"
 #include "ex_tty.h"
 
 #include "ex.h"
 #include "ex_tty.h"
 


@@ -7,7 +16,7 @@
  * and calculation of flags at entry or after
  * a shell escape which may change them.
  */
  * and calculation of flags at entry or after
  * a shell escape which may change them.
  */

-short  ospeed = -1;
+/* short       ospeed = -1;    mjm: def also in tputs.c of termcap.a  */

 
 gettmode()
 {
 
 gettmode()
 {


@@ -25,22 +34,23 @@ gettmode()
 #else
        if (ioctl(1, TCGETA, &tty) < 0)
                return;
 #else
        if (ioctl(1, TCGETA, &tty) < 0)
                return;

-       if (ospeed != tty.c_cflag & CBAUD)
+       if (ospeed != (tty.c_cflag & CBAUD))    /* mjm */

                value(SLOWOPEN) = (tty.c_cflag & CBAUD) < B1200;
        ospeed = tty.c_cflag & CBAUD;
        normf = tty;
        UPPERCASE = (tty.c_iflag & IUCLC) != 0;
        GT = (tty.c_oflag & TABDLY) != TAB3 && !XT;
                value(SLOWOPEN) = (tty.c_cflag & CBAUD) < B1200;
        ospeed = tty.c_cflag & CBAUD;
        normf = tty;
        UPPERCASE = (tty.c_iflag & IUCLC) != 0;
        GT = (tty.c_oflag & TABDLY) != TAB3 && !XT;

-       NONL = (tty.c_oflag & OCRNL) == 0;
+       NONL = (tty.c_oflag & ONLCR) == 0;

 #endif
 }
 
 char *xPC;
 char **sstrs[] = {
 #endif
 }
 
 char *xPC;
 char **sstrs[] = {

-       &AL, &BC, &BT, &CD, &CE, &CL, &CM, &xCR, &DC, &DL, &DM, &DO, &ED, &EI,
-       &F0, &F1, &F2, &F3, &F4, &F5, &F6, &F7, &F8, &F9,
-       &HO, &IC, &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU, &LL,
-       &ND, &xNL, &xPC, &SE, &SF, &SO, &SR, &TA, &TE, &TI, &UP, &VB, &VS, &VE
+       &AL, &BC, &BT, &CD, &CE, &CL, &CM, &xCR, &CS, &DC, &DL, &DM, &DO,
+       &ED, &EI, &F0, &F1, &F2, &F3, &F4, &F5, &F6, &F7, &F8, &F9,
+       &HO, &IC, &IM, &IP, &KD, &KE, &KH, &KL, &KR, &KS, &KU, &LL, &ND, &xNL,
+       &xPC, &RC, &SC, &SE, &SF, &SO, &SR, &TA, &TE, &TI, &UP, &VB, &VS, &VE,
+       &AL_PARM, &DL_PARM, &UP_PARM, &DOWN_PARM, &LEFT_PARM, &RIGHT_PARM

 };
 bool *sflags[] = {
        &AM, &BS, &DA, &DB, &EO, &HC, &HZ, &IN, &MI, &NC, &NS, &OS, &UL,
 };
 bool *sflags[] = {
        &AM, &BS, &DA, &DB, &EO, &HC, &HZ, &IN, &MI, &NC, &NS, &OS, &UL,


@@ -53,8 +63,7 @@ setterm(type)
        char *type;
 {
        char *tgoto();
        char *type;
 {
        char *tgoto();

-       register int unknown, i;
-       register int l;
+       register int unknown;

        char ltcbuf[TCBUFSIZE];
 
        if (type[0] == 0)
        char ltcbuf[TCBUFSIZE];
 
        if (type[0] == 0)


@@ -65,16 +74,7 @@ setterm(type)
                unknown++;
                CP(ltcbuf, "xx|dumb:");
        }
                unknown++;
                CP(ltcbuf, "xx|dumb:");
        }

-       i = LINES = tgetnum("li");
-       if (LINES <= 5)
-               LINES = 24;
-       if (LINES > 48)
-               LINES = 48;
-       l = LINES;
-       if (ospeed < B1200)
-               l = 9;  /* including the message line at the bottom */
-       else if (ospeed < B2400)
-               l = 17;
+       setsize();

        aoftspace = tspace;
        zap();
        /*
        aoftspace = tspace;
        zap();
        /*


@@ -86,6 +86,19 @@ setterm(type)
        arrows[3].cap = KR; arrows[3].mapto = "l"; arrows[3].descr = "right";
        arrows[4].cap = KH; arrows[4].mapto = "H"; arrows[4].descr = "home";
 
        arrows[3].cap = KR; arrows[3].mapto = "l"; arrows[3].descr = "right";
        arrows[4].cap = KH; arrows[4].mapto = "H"; arrows[4].descr = "home";
 

+       /*
+        * Handle funny termcap capabilities
+        */
+       if (CS && SC && RC) {
+               if (AL==NULL) AL="";
+               if (DL==NULL) 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 */
+

 #ifdef TIOCLGET
        /*
         * Now map users susp char to ^Z, being careful that the susp
 #ifdef TIOCLGET
        /*
         * Now map users susp char to ^Z, being careful that the susp


@@ -101,7 +114,8 @@ setterm(type)
                        sc[1] = 0;
                        if (olttyc.t_suspc == CTRL(z)) {
                                for (i=0; i<=4; i++)
                        sc[1] = 0;
                        if (olttyc.t_suspc == CTRL(z)) {
                                for (i=0; i<=4; i++)

-                                       if (arrows[i].cap[0] == CTRL(z))
+                                       if (arrows[i].cap &&
+                                           arrows[i].cap[0] == CTRL(z))

                                                addmac(sc, NULL, NULL, arrows);
                        } else
                                addmac(sc, "\32", "susp", arrows);
                                                addmac(sc, NULL, NULL, arrows);
                        } else
                                addmac(sc, "\32", "susp", arrows);


@@ -109,43 +123,77 @@ setterm(type)
        }
 #endif
 
        }
 #endif
 

-       options[WINDOW].ovalue = options[WINDOW].odefault = l - 1;
-       if (defwind) options[WINDOW].ovalue = defwind;
-       options[SCROLL].ovalue = options[SCROLL].odefault = HC ? 11 : ((l-1) / 2);
-       COLUMNS = tgetnum("co");
-       if (COLUMNS <= 4)
-               COLUMNS = 1000;

        if (tgoto(CM, 2, 2)[0] == 'O')  /* OOPS */
                CA = 0, CM = 0;
        else
        if (tgoto(CM, 2, 2)[0] == 'O')  /* OOPS */
                CA = 0, CM = 0;
        else

-               CA = 1, costCM = strlen(tgoto(CM, 8, 10));
+               CA = 1, costCM = cost(tgoto(CM, 8, 10));
+       costSR = cost(SR);
+       costAL = cost(AL);
+       costDP = cost(tgoto(DOWN_PARM, 10, 10));
+       costLP = cost(tgoto(LEFT_PARM, 10, 10));
+       costRP = cost(tgoto(RIGHT_PARM, 10, 10));

        PC = xPC ? xPC[0] : 0;
        aoftspace = tspace;
        CP(ttytype, longname(ltcbuf, type));
        PC = xPC ? xPC[0] : 0;
        aoftspace = tspace;
        CP(ttytype, longname(ltcbuf, type));

-       if (i <= 0)
-               LINES = 2;

        /* proper strings to change tty type */
        termreset();
        gettmode();
        value(REDRAW) = AL && DL;
        value(OPTIMIZE) = !CA && !GT;
        /* proper strings to change tty type */
        termreset();
        gettmode();
        value(REDRAW) = AL && DL;
        value(OPTIMIZE) = !CA && !GT;

+       if (ospeed == B1200 && !value(REDRAW))
+               value(SLOWOPEN) = 1;    /* see also gettmode above */

        if (unknown)
                serror("%s: Unknown terminal type", type);
 }
 
        if (unknown)
                serror("%s: Unknown terminal type", type);
 }
 

+setsize()
+{
+       register int l, i;
+       struct winsize win;
+
+       if (ioctl(0, TIOCGWINSZ, &win) < 0) {
+               i = LINES = tgetnum("li");
+               COLUMNS = tgetnum("co");
+       } else {
+               if ((LINES = winsz.ws_row = win.ws_row) == 0)
+                       LINES = tgetnum("li");
+               i = LINES;
+               if ((COLUMNS = winsz.ws_col = win.ws_col) == 0)
+                       COLUMNS = tgetnum("co");
+       }
+       if (LINES <= 5)
+               LINES = 24;
+       if (LINES > TUBELINES)
+               LINES = TUBELINES;
+       l = LINES;
+       if (ospeed < B1200)
+               l = 9;  /* including the message line at the bottom */
+       else if (ospeed < B2400)
+               l = 17;
+       if (l > LINES)
+               l = LINES;
+       if (COLUMNS <= 4)
+               COLUMNS = 1000;
+       options[WINDOW].ovalue = options[WINDOW].odefault = l - 1;
+       if (defwind) options[WINDOW].ovalue = defwind;
+       options[SCROLL].ovalue = options[SCROLL].odefault = HC ? 11 : ((l-1) / 2);
+       if (i <= 0)
+               LINES = 2;
+}
+

 zap()
 {
        register char *namp;
        register bool **fp;
        register char ***sp;
 
 zap()
 {
        register char *namp;
        register bool **fp;
        register char ***sp;
 

-       namp = "ambsdadbeohchzinmincnsosulxbxnxtxx";
+       namp = "ambsdadbeohchzinmincnsosulxbxnxtxx";

        fp = sflags;
        do {
                *(*fp++) = tgetflag(namp);
                namp += 2;
        } while (*namp);
        fp = sflags;
        do {
                *(*fp++) = tgetflag(namp);
                namp += 2;
        } while (*namp);

-       namp = "albcbtcdceclcmcrdcdldmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullndnlpcsesfsosrtatetiupvbvsve";
+       namp = "albcbtcdceclcmcrcsdcdldmdoedeik0k1k2k3k4k5k6k7k8k9hoicimipkdkekhklkrkskullndnlpcrcscsesfsosrtatetiupvbvsveALDLUPDOLERI";

        sp = sstrs;
        do {
                *(*sp++) = tgetstr(namp, &aoftspace);
        sp = sstrs;
        do {
                *(*sp++) = tgetstr(namp, &aoftspace);


@@ -182,3 +230,33 @@ fkey(i)
        else
                return(NOSTR);
 }
        else
                return(NOSTR);
 }

+
+/*
+ * cost figures out how much (in characters) it costs to send the string
+ * str to the terminal.  It takes into account padding information, as
+ * much as it can, for a typical case.  (Right now the typical case assumes
+ * the number of lines affected is the size of the screen, since this is
+ * mainly used to decide if AL or SR is better, and this always happens
+ * at the top of the screen.  We assume cursor motion (CM) has little
+ * padding, if any, required, so that case, which is really more important
+ * than AL vs SR, won't be really affected.)
+ */
+static int costnum;
+cost(str)
+char *str;
+{
+       int countnum();
+
+       if (str == NULL || *str=='O')   /* OOPS */
+               return 10000;   /* infinity */
+       costnum = 0;
+       tputs(str, LINES, countnum);
+       return costnum;
+}
+
+/* ARGSUSED */
+countnum(ch)
+char ch;
+{
+       costnum++;
+}