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- /*
- * 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
-