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/*
* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
*/
#ifndef lint
static char rcsid[] = "$NetBSD: hack.termcap.c,v 1.6 1995/04/29 01:20:00 mycroft Exp $";
#endif /* not lint */
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include "config.h" /* for ROWNO and COLNO */
#include "def.flag.h" /* for flags.nonull */
extern char *tgetstr(), *tgoto(), *getenv();
extern long *alloc();
#ifndef lint
extern /* it is defined in libtermlib (libtermcap) */
#endif lint
speed_t ospeed; /* terminal baudrate; used by tputs */
static char tbuf[512];
static char *HO, *CL, *CE, *UP, *CM, *ND, *XD, *BC, *SO, *SE, *TI, *TE;
static char *VS, *VE;
static int SG;
static char PC = '\0';
char *CD; /* tested in pri.c: docorner() */
int CO, LI; /* used in pri.c and whatis.c */
startup()
{
register char *term;
register char *tptr;
char *tbufptr, *pc;
tptr = (char *) alloc(1024);
tbufptr = tbuf;
if(!(term = getenv("TERM")))
error("Can't get TERM.");
if(!strncmp(term, "5620", 4))
flags.nonull = 1; /* this should be a termcap flag */
if(tgetent(tptr, term) < 1)
error("Unknown terminal type: %s.", term);
if(pc = tgetstr("pc", &tbufptr))
PC = *pc;
if(!(BC = tgetstr("bc", &tbufptr))) {
if(!tgetflag("bs"))
error("Terminal must backspace.");
BC = tbufptr;
tbufptr += 2;
*BC = '\b';
}
HO = tgetstr("ho", &tbufptr);
CO = tgetnum("co");
LI = tgetnum("li");
if(CO < COLNO || LI < ROWNO+2)
setclipped();
if(!(CL = tgetstr("cl", &tbufptr)))
error("Hack needs CL.");
ND = tgetstr("nd", &tbufptr);
if(tgetflag("os"))
error("Hack can't have OS.");
CE = tgetstr("ce", &tbufptr);
UP = tgetstr("up", &tbufptr);
/* It seems that xd is no longer supported, and we should use
a linefeed instead; unfortunately this requires resetting
CRMOD, and many output routines will have to be modified
slightly. Let's leave that till the next release. */
XD = tgetstr("xd", &tbufptr);
/* not: XD = tgetstr("do", &tbufptr); */
if(!(CM = tgetstr("cm", &tbufptr))) {
if(!UP && !HO)
error("Hack needs CM or UP or HO.");
printf("Playing hack on terminals without cm is suspect...\n");
getret();
}
SO = tgetstr("so", &tbufptr);
SE = tgetstr("se", &tbufptr);
SG = tgetnum("sg"); /* -1: not fnd; else # of spaces left by so */
if(!SO || !SE || (SG > 0)) SO = SE = 0;
CD = tgetstr("cd", &tbufptr);
set_whole_screen(); /* uses LI and CD */
if(tbufptr-tbuf > sizeof(tbuf)) error("TERMCAP entry too big...\n");
free(tptr);
}
start_screen()
{
xputs(TI);
xputs(VS);
}
end_screen()
{
xputs(VE);
xputs(TE);
}
/* Cursor movements */
extern xchar curx, cury;
curs(x, y)
register int x, y; /* not xchar: perhaps xchar is unsigned and
curx-x would be unsigned as well */
{
if (y == cury && x == curx)
return;
if(!ND && (curx != x || x <= 3)) { /* Extremely primitive */
cmov(x, y); /* bunker!wtm */
return;
}
if(abs(cury-y) <= 3 && abs(curx-x) <= 3)
nocmov(x, y);
else if((x <= 3 && abs(cury-y)<= 3) || (!CM && x<abs(curx-x))) {
(void) putchar('\r');
curx = 1;
nocmov(x, y);
} else if(!CM) {
nocmov(x, y);
} else
cmov(x, y);
}
nocmov(x, y)
{
if (cury > y) {
if(UP) {
while (cury > y) { /* Go up. */
xputs(UP);
cury--;
}
} else if(CM) {
cmov(x, y);
} else if(HO) {
home();
curs(x, y);
} /* else impossible("..."); */
} else if (cury < y) {
if(XD) {
while(cury < y) {
xputs(XD);
cury++;
}
} else if(CM) {
cmov(x, y);
} else {
while(cury < y) {
xputc('\n');
curx = 1;
cury++;
}
}
}
if (curx < x) { /* Go to the right. */
if(!ND) cmov(x, y); else /* bah */
/* should instead print what is there already */
while (curx < x) {
xputs(ND);
curx++;
}
} else if (curx > x) {
while (curx > x) { /* Go to the left. */
xputs(BC);
curx--;
}
}
}
cmov(x, y)
register x, y;
{
xputs(tgoto(CM, x-1, y-1));
cury = y;
curx = x;
}
xputc(c) char c; {
(void) fputc(c, stdout);
}
xputs(s) char *s; {
tputs(s, 1, xputc);
}
cl_end() {
if(CE)
xputs(CE);
else { /* no-CE fix - free after Harold Rynes */
/* this looks terrible, especially on a slow terminal
but is better than nothing */
register cx = curx, cy = cury;
while(curx < COLNO) {
xputc(' ');
curx++;
}
curs(cx, cy);
}
}
clear_screen() {
xputs(CL);
curx = cury = 1;
}
home()
{
if(HO)
xputs(HO);
else if(CM)
xputs(tgoto(CM, 0, 0));
else
curs(1, 1); /* using UP ... */
curx = cury = 1;
}
standoutbeg()
{
if(SO) xputs(SO);
}
standoutend()
{
if(SE) xputs(SE);
}
backsp()
{
xputs(BC);
curx--;
}
bell()
{
(void) putchar('\007'); /* curx does not change */
(void) fflush(stdout);
}
delay_output() {
/* delay 50 ms - could also use a 'nap'-system call */
/* BUG: if the padding character is visible, as it is on the 5620
then this looks terrible. */
if(!flags.nonull)
tputs("50", 1, xputc);
/* cbosgd!cbcephus!pds for SYS V R2 */
/* is this terminfo, or what? */
/* tputs("$<50>", 1, xputc); */
else if(ospeed > 0) if(CM) {
/* delay by sending cm(here) an appropriate number of times */
register int cmlen = strlen(tgoto(CM, curx-1, cury-1));
register int i = (ospeed + (100 * cmlen)) / (200 * cmlen);
while(i > 0) {
cmov(curx, cury);
}
}
}
cl_eos() /* free after Robert Viduya */
{ /* must only be called with curx = 1 */
if(CD)
xputs(CD);
else {
register int cx = curx, cy = cury;
while(cury <= LI-2) {
cl_end();
xputc('\n');
curx = 1;
cury++;
}
cl_end();
curs(cx, cy);
}
}
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