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display.c
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C/C++ Source or Header
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1987-08-24
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34KB
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991 lines
/*
* The functions in this file
* handle redisplay. There are two halves,
* the ones that update the virtual display
* screen, and the ones that make the physical
* display screen the same as the virtual
* display screen. These functions use hints
* that are left in the windows by the
* commands.
*/
#include <stdio.h>
#include <osbind.h>
#include "ed.h"
#define WFDEBUG 0 /* Window flag debug. */
#define BELL 0x07
typedef struct VIDEO {
short v_flag; /* Flags */
char v_text[]; /* Screen data. */
} VIDEO;
#define VFCHG 0x0001 /* Changed. */
#define VFEXT 0x0002 /* extended (beyond column 80) */
#define VFREV 0x0004 /* reverse ? */
#define VFREQ 0x0008
int sgarbf = TRUE; /* TRUE if screen is garbage */
int mpresf = FALSE; /* TRUE if message in last line */
int vtrow = 0; /* Row location of SW cursor */
int vtcol = 0; /* Column location of SW cursor */
int ttrow = HUGE; /* Row location of HW cursor */
int ttcol = HUGE; /* Column location of HW cursor */
int lbound = 0; /* leftmost column of current ln*/
char mlbuf[256]; /* modeline buffer */
VIDEO **vscreen; /* Virtual screen. */
VIDEO **pscreen; /* Physical screen. */
/*
* Initialize the data structures used
* by the display code. The edge vectors used
* to access the screens are set up. The operating
* system's terminal I/O channel is set up. All the
* other things get initialized at compile time.
* The original window has "WFCHG" set, so that it
* will get completely redrawn on the first
* call to "update".
*/
vtinit()
{
register int i;
register VIDEO *vp;
#if ST
/* save current colors for later */
savecolor();
#endif
(*term.t_open)();
vscreen = (VIDEO **) malloc(term.t_nrow*sizeof(VIDEO *));
if (vscreen == NULL)
abort();
pscreen = (VIDEO **) malloc(term.t_nrow*sizeof(VIDEO *));
if (pscreen == NULL)
abort();
for (i=0; i<term.t_nrow; ++i) {
vp = (VIDEO *) malloc(sizeof(VIDEO)+term.t_ncol);
if (vp == NULL)
abort();
vp->v_flag = 0;
vscreen[i] = vp;
vp = (VIDEO *) malloc(sizeof(VIDEO)+term.t_ncol);
if (vp == NULL)
abort();
vp->v_flag = 0;
pscreen[i] = vp;
}
}
/*
* Clean up the virtual terminal
* system, in anticipation for a return to the
* operating system. Move down to the last line and
* clear it out (the next system prompt will be
* written in the line). Shut down the channel
* to the terminal.
*/
vttidy()
{
mlerase();
movecursor(term.t_nrow, 0);
(*term.t_eeol)();
(*term.t_close)();
}
/*
* Set the virtual cursor to
* the specified row and column on the
* virtual screen. There is no checking for
* nonsense values; this might be a good
* idea during the early stages.
*/
vtmove(row, col)
register int row, col;
{
vtrow = row;
vtcol = col;
}
/*
* Write a character to the
* virtual screen. The virtual row and
* column are updated. If the line is too
* long put a "$" in the last column.
* This routine only puts printing characters
* into the virtual terminal buffers.
* Only column overflow is checked.
*/
vtputc(c)
register int c;
{
register VIDEO *vp;
vp = vscreen[vtrow];
if (vtcol >= term.t_ncol) {
vtcol = (vtcol + 0x07) & ~0x07;
vp->v_text[term.t_ncol-1] = '$';
}
else if (c == '\t') {
do {
vtputc(' ');
} while ((vtcol&0x07) != 0);
} else if (c<0x20 || c==0x7F) {
vtputc('^');
vtputc(c ^ 0x40);
} else
vp->v_text[vtcol++] = c;
}
/*
* put a character to the virtual screen in an extended line. If we are
* not yet on left edge, don't print it yet. check for overflow on
* the right margin.
*/
vtpute(c)
register int c;
{
register VIDEO *vp;
vp = vscreen[vtrow];
if (vtcol >= term.t_ncol) {
vtcol = (vtcol + 0x07) & ~0x07;
vp->v_text[term.t_ncol - 1] = '$';
}
else if (c == '\t') {
do {
vtpute(' ');
} while (((vtcol + lbound)&0x07) != 0);
}
else if (c < 0x20 || c == 0x7F) {
vtpute('^');
vtpute(c ^ 0x40);
}
else {
if (vtcol >= 0)
vp->v_text[vtcol] = c;
++vtcol;
}
}
/*
* Erase from the end of the
* software cursor to the end of the
* line on which the software cursor is
* located.
*/
vteeol()
{
register VIDEO *vp;
vp = vscreen[vtrow];
while (vtcol < term.t_ncol)
vp->v_text[vtcol++] = ' ';
}
/*
* Make sure that the display is
* right. This is a three part process. First,
* scan through all of the windows looking for dirty
* ones. Check the framing, and refresh the screen.
* Second, make sure that "currow" and "curcol" are
* correct for the current window. Third, make the
* virtual and physical screens the same.
*/
update()
{
register LINE *lp;
register WINDOW *wp;
register VIDEO *vp1;
register VIDEO *vp2;
register int i;
register int j;
register int c;
#if ST
Bconout(2,0x1b); /* hide cursor */
Bconout(2,'f');
#endif
for (i = 0; i < term.t_nrow; ++i)
vscreen[i]->v_flag &= ~VFREQ;
#if ST
wp = wheadp;
while (wp != NULL) {
vscreen[wp->w_toprow+wp->w_ntrows]->v_flag |= VFREQ;
wp = wp->w_wndp;
}
#endif
wp = wheadp;
while (wp != NULL) {
/* Look at any window with update flags set on. */
if (wp->w_flag != 0) {
/* If not force reframe, check the framing. */
if ((wp->w_flag&WFFORCE) == 0) {
lp = wp->w_linep;
for (i=0; i<wp->w_ntrows; ++i) {
if (lp == wp->w_dotp)
goto out;
if (lp == wp->w_bufp->b_linep)
break;
lp = lforw(lp);
}
}
/* Not acceptable, better compute a new value */
/* for the line at the top of the window. Then */
/* set the "WFHARD" flag to force full redraw. */
i = wp->w_force;
if (i > 0) {
--i;
if (i >= wp->w_ntrows)
i = wp->w_ntrows-1;
} else if (i < 0) {
i += wp->w_ntrows;
if (i < 0)
i = 0;
} else
i = wp->w_ntrows/2;
lp = wp->w_dotp;
while (i!=0 && lback(lp)!=wp->w_bufp->b_linep) {
--i;
lp = lback(lp);
}
wp->w_linep = lp;
wp->w_flag |= WFHARD; /* Force full. */
out:
/* Try to use reduced update. Mode line update */
/* has its own special flag. The fast update is */
/* used if the only thing to do is within the */
/* line editing. */
lp = wp->w_linep;
i = wp->w_toprow;
if ((wp->w_flag&~WFMODE) == WFEDIT) {
while (lp != wp->w_dotp) {
++i;
lp = lforw(lp);
}
vscreen[i]->v_flag |= VFCHG;
vtmove(i, 0);
for (j=0; j<llength(lp); ++j)
vtputc(lgetc(lp, j));
vteeol();
} else if ((wp->w_flag&(WFEDIT|WFHARD)) != 0) {
while (i < wp->w_toprow+wp->w_ntrows) {
vscreen[i]->v_flag |= VFCHG;
vtmove(i, 0);
if (lp != wp->w_bufp->b_linep) {
for (j=0; j<llength(lp); ++j)
vtputc(lgetc(lp, j));
lp = lforw(lp);
}
vteeol();
++i;
}
}
if ((wp->w_flag&WFMODE) != 0)
modeline(wp);
wp->w_flag = 0;
wp->w_force = 0;
}
/*
#if WFDEBUG
modeline(wp);
wp->w_flag = 0;
wp->w_force = 0;
#endif
*/
wp = wp->w_wndp;
}
/* Always recompute the row and column number of the hardware */
/* cursor. This is the only update for simple moves. */
lp = curwp->w_linep;
currow = curwp->w_toprow;
while (lp != curwp->w_dotp) {
++currow;
lp = lforw(lp);
}
curcol = 0;
i = 0;
while (i < curwp->w_doto) {
c = lgetc(lp, i++);
if (c == '\t')
curcol |= 0x07;
else if (c<0x20 || c==0x7F)
++curcol;
++curcol;
}
if (curcol >= term.t_ncol-1) { /* Extended line. */
/* flag we are extended and changed */
vscreen[currow]->v_flag |= VFEXT | VFCHG;
updext(); /* and output extended line */
} else
lbound = 0; /* not extended line */
/* make sure no lines need to be de-extended because the cursor is
* no longer on them
*/
wp = wheadp;
while (wp != NULL) {
lp = wp->w_linep;
i = wp->w_toprow;
while (i < wp->w_toprow + wp->w_ntrows) {
if (vscreen[i]->v_flag & VFEXT) {
/* always flag extended lines as changed */
vscreen[i]->v_flag |= VFCHG;
if ((wp != curwp) || (lp != wp->w_dotp) ||
(curcol < term.t_ncol - 1)) {
vtmove(i, 0);
for (j = 0; j < llength(lp); ++j)
vtputc(lgetc(lp, j));
vteeol();
/* this line no longer is extended */
vscreen[i]->v_flag &= ~VFEXT;
}
}
lp = lforw(lp);
++i;
}
/* and onward to the next window */
wp = wp->w_wndp;
}
/* Special hacking if the screen is garbage. Clear the hardware */
/* screen, and update your copy to agree with it. Set all the */
/* virtual screen change bits, to force a full update. */
if (sgarbf != FALSE) {
for (i=0; i<term.t_nrow; ++i) {
vscreen[i]->v_flag |= VFCHG;
vp1 = pscreen[i];
for (j=0; j<term.t_ncol; ++j)
vp1->v_text[j] = ' ';
}
movecursor(0, 0); /* Erase the screen. */
(*term.t_eeop)();
sgarbf = FALSE; /* Erase-page clears */
mpresf = FALSE; /* the message area. */
}
/* Make sure that the physical and virtual displays agree. */
/* Unlike before, the "updateline" code is only called with a */
/* line that has been updated for sure. */
for (i=0; i<term.t_nrow; ++i) {
vp1 = vscreen[i];
j = vp1->v_flag;
if (((j & VFCHG) != 0) || (((j & VFREV) == 0) !=
((j & VFREQ) ==0)))
{
vp2 = pscreen[i];
updateline(i, &vp1->v_text[0], &vp2->v_text[0],
&vp1->v_flag);
}
}
/* Finally, update the hardware cursor and flush out buffers. */
movecursor(currow, curcol-lbound);
(*term.t_flush)();
#if ST
Bconout(2,0x1b); /* enable cursor */
Bconout(2,'e');
#endif
}
/*
* updext: update the extended line which the cursor is currently
* on at a column greater than the terminal width. The line
* will be scrolled right or left to let the user see where
* the cursor is
*/
updext()
{
register int rcursor; /* real cursor location */
register LINE *lp; /* pointer to current line */
register int j; /* index into line */
/* calculate what column the real cursor will end up in */
rcursor = ((curcol - term.t_ncol) % term.t_scrsiz) + term.t_margin;
lbound = curcol - rcursor + 1;
/* scan through the line outputing characters to the virtual screen */
/* once we reach the left edge */
vtmove(currow, -lbound); /* start scanning offscreen */
lp = curwp->w_dotp; /* line to output */
for (j=0; j<llength(lp); ++j) /* until the end-of-line */
vtpute(lgetc(lp, j));
/* truncate the virtual line */
vteeol();
/* and put a '$' in column 1 */
vscreen[currow]->v_text[0] = '$';
}
/*
* Update a single line. This
* does not know how to use insert
* or delete character sequences; we are
* using VT52 functionality. Update the physical
* row and column variables. It does try an
* exploit erase to end of line. The RAINBOW version
* of this routine uses fast video.
*/
updateline(row, vline, pline, flags)
int row;
char vline[];
char pline[];
short *flags;
{
#if RAINBOW
register char *cp1;
register char *cp2;
register int nch;
cp1 = &vline[0]; /* Use fast video. */
cp2 = &pline[0];
putline(row+1, 1, cp1);
nch = term.t_ncol;
do {
*cp2 = *cp1;
++cp2;
++cp1;
} while (--nch);
#else
register char *cp1;
register char *cp2;
register char *cp3;
register char *cp4;
register char *cp5;
register int nbflag;
int rev;
int req;
cp1 = &vline[0]; /* Compute left match. */
cp2 = &pline[0];
#if ST
rev = *flags & VFREV;
req = *flags & VFREQ;
if (rev != req) {
movecursor(row, 0); /* Go to start of line. */
if (req)
{
Crawio(0x1b);
Crawio('p');
}
else
{
Crawio(0x1b);
Crawio('q');
}
/* (*term.t_rev)(req != FALSE);*/
/* scan through the line and dump it to the screen and
* the virtual screen array
*/
cp3 = &vline[term.t_ncol];
while (cp1 < cp3) {
(*term.t_putchar)(*cp1);
++ttcol;
*cp2++ = *cp1++;
}
Crawio(0x1b);
Crawio('q'); /* turn on reverse video */
/* update the needed flags */
*flags &= ~VFCHG;
if (req)
*flags |= VFREV;
else
*flags &= ~VFREV;
return(TRUE);
}
#endif
while (cp1!=&vline[term.t_ncol] && cp1[0]==cp2[0]) {
++cp1;
++cp2;
}
/* This can still happen, even though we only call this routine */
/* on changed lines. A hard update is always done when a line */
/* splits, a massive change is done, or a buffer is displayed */
/* twice. This optimizes out most of the excess updating. A lot */
/* of computes are used, but these tend to be hard operations */
/* that do a lot of update, so I don't really care. */
if (cp1 == &vline[term.t_ncol]) /* All equal. */
return;
nbflag = FALSE;
cp3 = &vline[term.t_ncol]; /* Compute right match. */
cp4 = &pline[term.t_ncol];
while (cp3[-1] == cp4[-1]) {
--cp3;
--cp4;
if (cp3[0] != ' ') /* Note if any nonblank */
nbflag = TRUE; /* in right match. */
}
cp5 = cp3;
if (nbflag == FALSE) { /* Erase to EOL ? */
while (cp5!=cp1 && cp5[-1]==' ')
--cp5;
if ( ((int)cp3-(int)cp5) <= 3) /* Use only if erase is */
cp5 = cp3; /* fewer characters. */
}
movecursor(row, (int)cp1-(int)&vline[0]);/* Go to start of line.*/
while (cp1 != cp5) { /* Ordinary. */
(*term.t_putchar)(*cp1);
++ttcol;
*cp2++ = *cp1++;
}
if (cp5 != cp3) { /* Erase. */
(*term.t_eeol)();
while (cp1 != cp3)
*cp2++ = *cp1++;
}
*flags &= ~VFCHG;
#endif
}
/*
* Redisplay the mode line for
* the window pointed to by the "wp".
* This is the only routine that has any idea
* of how the modeline is formatted. You can
* change the modeline format by hacking at
* this routine. Called by "update" any time
* there is a dirty window.
*/
modeline(wp)
register WINDOW *wp;
{
register char *cp;
register int c;
register int i;
register int n;
register BUFFER *bp;
register int lchar;
char tline[82];
n = wp->w_toprow+wp->w_ntrows; /* Location. */
vscreen[n]->v_flag |= VFCHG; /* Redraw next time. */
vtmove(n,0);
if (wp == curwp)
lchar = '=';
else
lchar = '-';
vtputc(lchar);
bp = wp->w_bufp;
if ((bp->b_flag&BFCHG) != 0) /* "*" if changed. */
vtputc('*');
else
vtputc(lchar);
n = 2;
#if ST
strcpy(tline," Uemail ST 3.3 ("); /* Buffer name. */
#else
strcpy(tline, "Uemail 3.3 (");
#endif
/* display the modes */
if (wp->w_bufp->b_bmode&BMCMODE)
strcat(tline, "C");
else if (wp->w_bufp->b_bmode&BMWRAP)
strcat(tline, "Wrap");
else
strcat(tline, "Fundamental");
strcat(tline,") ");
cp = &tline[0];
while ((c = *cp++) != 0) {
vtputc(c);
++n;
}
vtputc(lchar);
vtputc(lchar);
vtputc(' ');
n += 3;
cp = &bp->b_bname[0];
while ((c = *cp++) != 0) {
vtputc(c);
++n;
}
vtputc(' ');
vtputc(lchar);
vtputc(lchar);
n += 3;
if (bp->b_fname[0] != 0) { /* File name. */
cp = " File: ";
while ((c = *cp++) != 0) {
vtputc(c);
++n;
}
cp = &bp->b_fname[0];
while ((c = *cp++) != 0) {
vtputc(c);
++n;
}
vtputc(' ');
++n;
}
#if WFDEBUG
vtputc(lchar);
vtputc((wp->w_flag&WFMODE)!=0 ? 'M' : '-');
vtputc((wp->w_flag&WFHARD)!=0 ? 'H' : '-');
vtputc((wp->w_flag&WFEDIT)!=0 ? 'E' : '-');
vtputc((wp->w_flag&WFMOVE)!=0 ? 'V' : '-');
vtputc((wp->w_flag&WFFORCE)!=0 ? 'F' : '-');
n += 6;
#endif
while (n < term.t_ncol) { /* Pad to full width. */
vtputc(lchar);
++n;
}
}
upmode() /* update all the mode lines */
{
register WINDOW *wp;
wp = wheadp;
while (wp != NULL) {
wp->w_flag |= WFMODE;
wp = wp->w_wndp;
}
}
/*
* Send a command to the terminal
* to move the hardware cursor to row "row"
* and column "col". The row and column arguments
* are origin 0. Optimize out random calls.
* Update "ttrow" and "ttcol".
*/
movecursor(row, col)
register int row, col;
{
if (row!=ttrow || col!=ttcol) {
ttrow = row;
ttcol = col;
(*term.t_move)(row, col);
}
}
/*
* Erase the message line.
* This is a special routine because
* the message line is not considered to be
* part of the virtual screen. It always works
* immediately; the terminal buffer is flushed
* via a call to the flusher (not on ST).
*/
mlerase()
{
movecursor(term.t_nrow, 0);
#if ST
Bconout(2,0x1b); /* ST Kill entire line command */
Bconout(2,'l');
#else
(*term.t_eeol)();
(*term.t_flush)();
#endif
mpresf = FALSE;
}
/*
* Ask a yes or no question in
* the message line. Return either TRUE,
* FALSE, or ABORT. The ABORT status is returned
* if the user bumps out of the question with
* a ^G. Used any time a confirmation is
* required.
*/
mlyesno(prompt)
char *prompt;
{
register int c;
char buf[64];
for (;;) {
strcpy(buf, prompt);
strcat(buf, " [y/n]? ");
mlwrite(buf);
/* get the response */
c = (*term.t_getchar)();
if (c == BELL) /* Bail out! */
return(ABORT);
if (c=='y' || c=='Y')
return(TRUE);
if (c=='n' || c=='N')
return(FALSE);
}
}
/*
* Write a prompt into the message
* line, then read back a response. Keep
* track of the physical position of the cursor.
* If we are in a keyboard macro throw the prompt
* away, and return the remembered response. This
* lets macros run at full speed. The reply is
* always terminated by a carriage return. Handle
* erase, kill, and abort keys.
*/
mlreply(prompt, buf, nbuf)
char *prompt;
char *buf;
int nbuf;
{
return(mlreplt(prompt,buf,nbuf,'\n'));
}
/* A more generalized prompt/reply function allowing the caller
* to specify the proper terminator. If the terminator is not
* a return ('\n') it will echo as "<NL>"
*/
mlreplt(prompt, buf, nbuf, eolchar)
char *prompt;
char *buf;
int nbuf;
char eolchar;
{
register int cpos;
register int i;
register int c;
cpos = 0;
if (kbdmop != NULL) {
while ((c = *kbdmop++) != '\0')
buf[cpos++] = c;
buf[cpos] = 0;
if (buf[0] == 0)
return (FALSE);
return (TRUE);
}
#if ST
(*term.t_move)(term.t_nrow, 0); /* in case we're in terminal mode */
#endif
mlwrite(prompt);
for (;;) {
/* get a character from the user. if it is a <ret>, change it
* to a <NL>
*/
c = (*term.t_getchar)();
if (c == 0x0d)
c = '\n';
if (c == eolchar) {
buf[cpos++] = 0;
if (kbdmip != NULL) {
if (kbdmip+cpos > &kbdm[NKBDM-3]) {
ctrlg(FALSE, 0);
(*term.t_flush)();
return(ABORT);
}
for (i=0; i<cpos; ++i)
*kbdmip++ = buf[i];
}
(*term.t_putchar)('\r');
ttcol = 0;
(*term.t_flush)();
if (buf[0] == 0)
return(FALSE);
return(TRUE);
} else if (c == 0x07) { /* Bell, abort */
(*term.t_putchar)('^');
(*term.t_putchar)('G');
ttcol += 2;
ctrlg(FALSE, 0);
(*term.t_flush)();
return(ABORT);
} else if (c == 0x7F || c == 0x08 || c == 0x02) {
/* rubout/erase/cursor left */
if (cpos != 0) {
(*term.t_putchar)('\b');
(*term.t_putchar)(' ');
(*term.t_putchar)('\b');
--ttcol;
if (buf[--cpos] < 0x20) {
(*term.t_putchar)('\b');
(*term.t_putchar)(' ');
(*term.t_putchar)('\b');
--ttcol;
}
if (buf[cpos] == '\n') {
(*term.t_putchar)('\b');
(*term.t_putchar)('\b');
(*term.t_putchar)(' ');
(*term.t_putchar)(' ');
(*term.t_putchar)('\b');
(*term.t_putchar)('\b');
--ttcol;
--ttcol;
}
(*term.t_flush)();
}
} else if (c == 0x15) { /* C-U, kill */
while (cpos != 0) {
(*term.t_putchar)('\b');
(*term.t_putchar)(' ');
(*term.t_putchar)('\b');
--ttcol;
if (buf[--cpos] < 0x20) {
(*term.t_putchar)('\b');
(*term.t_putchar)(' ');
(*term.t_putchar)('\b');
--ttcol;
}
}
(*term.t_flush)();
} else {
if (cpos < nbuf-1) {
buf[cpos++] = c;
if ((c < ' ') && (c != '\n')) {
(*term.t_putchar)('^');
++ttcol;
c ^= 0x40;
}
if (c != '\n')
(*term.t_putchar)(c);
else { /* put out <NL> for <ret> */
(*term.t_putchar)('<');
(*term.t_putchar)('N');
(*term.t_putchar)('L');
(*term.t_putchar)('>');
ttcol += 3;
}
++ttcol;
(*term.t_flush)();
}
}
}
}
/*
* Write a message into the message
* line. Keep track of the physical cursor
* position. A small class of printf like format
* items is handled. Assumes the stack grows
* down; this assumption is made by the "++"
* in the argument scan loop. Set the "message
* line" flag TRUE. For the ST this function
* uses sprintf() to get at ULONG and FLOAT
* arguments. I couldn't get *VARARGS* to work
* so I kludged with the 10 long args. Is this
* worth it?
*/
mlwrite(fmt, arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10)
char *fmt;
#if ST
long arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10;
{
/* Use the built-in functions on the ST.
* This lets us get to unsigned longs and floats
* but limits the number of arguments to 10.
*/
mlerase();
mpresf = TRUE;
sprintf(mlbuf,fmt,arg1,arg2,arg3,arg4,arg5,arg6,arg7,arg8,arg9,arg10);
ttputc(0x1b); ttputc('f'); /* hide cursor */
Cconws(mlbuf);
(*term.t_eeol)();
ttputc(0x1b); ttputc('e'); /* show cursor */
}
#else
int arg;
{
register int c;
register char *ap;
movecursor(term.t_nrow, 0);
ap = (char *) &arg;
while ((c = *fmt++) != 0) {
if (c != '%') {
(*term.t_putchar)(c);
++ttcol;
} else {
c = *fmt++;
switch (c) {
case 'd':
mlputi(*(int *)ap, 10);
ap += sizeof(int);
break;
case 'o':
mlputi(*(int *)ap, 8);
ap += sizeof(int);
break;
case 'x':
mlputi(*(int *)ap, 16);
ap += sizeof(int);
break;
case 'D':
mlputli(*(long *)ap, 10);
ap += sizeof(long);
break;
case 's':
mlputs(*(char **)ap);
ap += sizeof(char *);
break;
default:
(*term.t_putchar)(c);
++ttcol;
}
}
}
(*term.t_eeol)();
(*term.t_flush)();
mpresf = TRUE;
}
/*
* Write out a string.
* Update the physical cursor position.
* This assumes that the characters in the
* string all have width "1"; if this is
* not the case things will get screwed up
* a little.
*/
mlputs(s)
register char *s;
{
register int c;
while ((c = *s++) != 0) {
(*term.t_putchar)(c);
++ttcol;
}
}
/*
* Write out an integer, in
* the specified radix. Update the physical
* cursor position. This will not handle any
* negative numbers; maybe it should.
*/
mlputi(i, r)
int i, r;
{
register int q;
static char hexdigits[] = "0123456789ABCDEF";
if (i < 0) {
i = -i;
(*term.t_putchar)('-');
}
q = i/r;
if (q != 0)
mlputi(q, r);
(*term.t_putchar)(hexdigits[i%r]);
++ttcol;
}
/*
* do the same except as a long integer.
*/
mlputli(l, r)
long l;
int r;
{
register long q;
if (l < 0) {
l = -l;
(*term.t_putchar)('-');
}
q = l/r;
if (q != 0)
mlputli(q, r);
(*term.t_putchar)((int)(l%r)+'0');
++ttcol;
}
#endif