void
fileinfo(void)
{
long l1, l2;
char buf[MAX_COLUMNS + 1];
l1 = cntllines(Filemem, Curschar);
l2 = cntllines(Filemem, Fileend) - 1;
sprintf(buf, "\"%s\"%s line %ld of %ld -- %ld %% --",
(Filename != NULL) ? Filename : "No File",
Changed ? " [Modified]" : "",
l1, l2, (l1 * 100) / l2);
msg(buf);
}
/*
* updateline() - like s_refresh() but only for cursor line
*
* This determines whether or not we need to call s_refresh() to examine
* the entire screen for changes. This occurs if the size of the cursor line
* (in rows) has changed.
*/
static void
updateline(void)
{
char *ptr;
int col;
int size;
int j;
if (RedrawingDisabled) /* Is this the correct action ? */
return;
ptr = format_line(Curschar->linep->s, &col);
size = 1 + ((col - 1) / Columns);
if (Cline_size == size) {
s_cursor_off();
windgoto(Cline_row, 0);
if (P(P_NU)) {
/*
* This should be done more efficiently.
*/
outstr(mkline(cntllines(Filemem, Curschar)));
}
outstr(ptr);
j = col;
col %= Columns;
if ((col != 0) || (j == 0)) {
#ifdef T_END_L
windgoto(Cline_row + size - 1, col);
toutstr(T_END_L);
#else
for (; col < Columns; col++)
outchar(' ');
#endif
}
s_cursor_on();
} else {
s_refresh(VALID_TO_CURSCHAR);
}
}
void
cursupdate()
{
LPTR *p;
int inc, c, nlines;
int i;
int didinc;
if (bufempty()) { /* special case - file is empty */
*Topchar = *Filemem;
*Curschar = *Filemem;
} else if ( LINEOF(Curschar) < LINEOF(Topchar) ) {
nlines = cntllines(Curschar,Topchar);
/* if the cursor is above the top of */
/* the screen, put it at the top of the screen.. */
*Topchar = *Curschar;
Topchar->index = 0;
/* ... and, if we weren't very close to begin with, */
/* we scroll so that the line is close to the middle. */
if ( nlines > Rows/3 ) {
for (i=0, p = Topchar; i < Rows/3 ;i++, *Topchar = *p)
if ((p = prevline(p)) == NULL)
break;
} else
s_ins(0, nlines-1);
updatescreen();
}
else if (LINEOF(Curschar) >= LINEOF(Botchar)) {
nlines = cntllines(Botchar,Curschar);
/* If the cursor is off the bottom of the screen, */
/* put it at the top of the screen.. */
/* ... and back up */
if ( nlines > Rows/3 ) {
p = Curschar;
for (i=0; i < (2*Rows)/3 ;i++)
if ((p = prevline(p)) == NULL)
break;
*Topchar = *p;
} else {
scrollup(nlines);
}
updatescreen();
}
Cursrow = Curscol = Cursvcol = 0;
for ( p=Topchar; p->linep != Curschar->linep ;p = nextline(p) )
Cursrow += plines(p);
Cline_row = Cursrow;
Cline_size = plines(p);
for (i=0; i <= Curschar->index ;i++) {
c = Curschar->linep->s[i];
/* A tab gets expanded, depending on the current column */
if ( c == TAB && !P(P_LS) )
inc = P(P_TS) - (Curscol % P(P_TS));
else
inc = chars[(unsigned)(c & 0xff)].ch_size;
Curscol += inc;
Cursvcol += inc;
if ( Curscol >= Columns ) {
Curscol -= Columns;
Cursrow++;
didinc = TRUE;
}
else
didinc = FALSE;
}
if (didinc)
Cursrow--;
if (c == TAB && State == NORMAL && !P(P_LS)) {
Curscol--;
Cursvcol--;
} else {
Curscol -= inc;
Cursvcol -= inc;
}
if (Curscol < 0)
Curscol += Columns;
if (set_want_col) {
Curswant = Cursvcol;
set_want_col = FALSE;
}
}
